BILFINGER WATER TECHNOLOGIES
PRODUCTS AND SOLUTIONS FOR THE TREATMENT OF WATER, WASTEWATER AND SLUDGE.
OUR BRANDS FOR RELIABLE TECHNOLOGIES:
PASSAVANT
®– JOHNSON SCREENS
®– NOGGERATH
®– GEIGER
®––––––
WE MAKE
WATER TREATMENT
WORK
.
BILFINGER WATER
TECHNOLOGIES
GENERAL INDUSTRIAL
HYDROCARBON PROCESSING
INDUSTRIAL FILTRATION
VACUUM TECHNOLOGY
WATER INTAKE
WATER TREATMENT
WATER WELL
GLOBAL BUSINESS UNITS
A perfect network of expertise.
Headquarters
Bilfinger Water Technologies GmbH
Passavant-Geiger-Strasse 1, 65326 Aarbergen, Germany
Phone +49 6120 28-0
info.water@bilfinger.com, www.water.bilfinger.com
Global Business Unit Water Treatment
(wastewater / potable water / industrial applications)
Brands
▪ PASSAVANT®
▪ JOHNSON SCREENS®
▪ NOGGERATH®
▪ GEIGER®
Technologies / range of products
▪ Coarse screens
▪ Shut-off devices (penstocks and sluice gates)
▪ Inlet works / headworks
(fine screening technology, screenings and grit treatment, spiral conveying systems)
▪ Fine bubble aeration, Surface Brush Aerator MAMMOTH ROTOR® and biological process efficiency
▪ Scraping systems
▪ Sludge thickening and dewatering
(belt thickeners, belt and chamber filter presses, screw presses)
▪ Fine and micro-sieving / screening as well as TRITON UNDERDRAINS™ for gravity filters
OUR MISSION
IS CLEAN WATER.
Over 70 per cent of our planet is covered with water. This apparent wealth takes
on a new meaning when we consider that only approximately 3 per cent is fresh water.
From the very beginnings of human development, this water has meant life to us –
both to drink and to water our fields and animals. As technology advances,
we create ever new forms of process water and wastewater. Thus a responsible
approach to the handling of this precious element is now, more than ever, the key
to progress in our world.
As one of the leading suppliers worldwide, Bilfinger Water Technologies offers components and services in almost every field of water and wastewater technology. The group has a strong global presence with companies located in Europe, North and South America, North Africa, South and East Asia and Australia. Through the products and services of the traditional brands PASSAVANT®, JOHNSON SCREENS®, NOGGERATH® and GEIGER®, the Global Business Unit Water Treatment is able to provide system solutions, with components and machines manu-factured within the group, for the clarification of municipal and industrial wastewater, biological treatment, sludge treatment and drinking water purification and to increase the overall efficiency of wastewater treatment plants.
Our broad portfolio of innovative solutions enables us to support the entire clarification and further processing procedure:
▪ 1. Inlet works / headworks:
Various elements of inlet works / headworks and solids / liquid separation, intake, conveyance and steering of water flows by means of shut-off devices
▪ 2. Biological treatment:
Biological processing of the wastewater and separation of soluble organic substances; system solutions to improve process efficiency
▪ 3. Sludge treatment:
Sludge processing as a basis for economic disposal methods and extraction of raw materials
▪ 4. Fine and micro-sieving / screening:
Separation of extremely fine particles as the final stage of the treatment process by means of advanced rotary drum, micro and underdrain screening systems
▪ 5. Pump technologies
▪ After-market and field services
With our commitment to exceptional service, we offer our customers support along the entire route to their optimal product solution: from consultations in the design and planning phase to reliable service, even after many years of operation.
1. INLET WORKS / HEADWORKS:
ATTENTION TO DETAIL IS THE
KEY TO OPTIMUM EFFICIENCY.
It is crucial for the subsequent purification and recycling processes, that solids are
efficiently separated from industrial or municipal wastewater. Therefore, Bilfinger
Water Technologies provides machine solutions which can be ideally adapted to suit
the respective requirements and conditions.
Our machines for the further processing of extracted (recyclable) materials present a sound overall concept for the first stage when employed in combination with our rakes and screens, conveying systems and shut-off devices.
The central task of the inlet works / headworks is the separation of coarse solids such as rocks, wood, foliage, sanitary products, toilet paper, etc. and also sand and grease. Reliable pre-treatment of the wastewater is crucial for all subsequent treatment pro-cesses. Blockages and obstructions are prevented in downstream biological and / or physical processes and the general strain on the plant is eased.
The optimal adjustment of screen gap widths and sieve hole diameters are of particular significance here. For a convincing “screening result” in municipal and industrial applications, these must be perfectly tuned to the respective medium, volume of flow and local installation conditions. Reliable conveying systems and shut-off devices ensure the intake / discharge and transport of water and substances.
Bilfinger Water Technologies can deliver individual com ponents or develop complete solutions which are tailored to your specific needs.
1. Inlet works / headworks:
Coarse screening Fine screening Screenings treatment
Sand treatment
Primary and secondary clarification Shut-off devices
5
COARSE SCREENING.
Bilfinger Water Technologies supplies the entire range of coarse and fine
screening systems. Bar screens with grab cleaner, climber screens and revolving
chain screens have proved to be highly successful in coarse screening processes.
As the first stage of the inlet works / headworks, coarse screens are employed to retain coarse solids and thus protect all further downstream treatment stages. The individual design of the bar rack enables a high cleaning performance and even coarse or bulky screenings, such as stones or wood, can be reliably removed. As the gap widths are designed in graduations, our coarse screens can also be utilised for fine screening.
The coarse screen systems supplied by our top quality brands PASSAVANT®, JOHNSON SCREENS®, NOGGERATH® and GEIGER® are employed in the separation of heavy screenings upstream of pump stations and in the inlet areas of wastewater treatment plants. Our PASSAVANT® Shut-Off Devices are also suitable here, for the adjustment of water volumes and the protection of the plant during overhauls.
We offer you tailored solutions for a wide range of requirements and installation conditions.
1. Inlet works / headworks:
Coarse screening Fine screening Screenings treatment
Sand treatment
Primary and secondary clarification Shut-off devices
PASSAVANT® and GEIGER®
bar screens with grab cleaner
NOGGERATH®, JOHNSON SCREENS® and
PASSAVANT® revolving chain screens
PASSAVANT® coarse screens for pumping stations
GEIGER® climber screens
7
NOGGERATH® and JOHNSON SCREENS®
fine screening solutions NOGGERATH
® and JOHNSON SCREENS®
spiral sieves
NOGGERATH® and JOHNSON SCREENS®
rotary drum screens
Bilfinger Water Technologies is also renowned for continuous development in the
field of fine screening. We aim to ensure a reliable, defined and targeted separation of
fine substances such as fibres and floating matter, in order to optimise downstream
processes and to protect the environment.
FINE SCREENING.
After bulky screenings have been separated in the coarse screen-ing stage, fine contaminants such as hair, fibres, sanitary articles or paper still remain in the wastewater. The narrow gap widths of fine screening rakes and sieves are excellently suited for the removal of such substances and the safeguarding of subsequent treatment phases.
In order to guarantee a reliable and efficient screening process, Bilfinger Water Technologies offers a broad portfolio of rakes and screens which are tailored to your individual requirements. PASSAVANT® Shut-Off Devices ensure efficient adjustment of water volumes and reliable protection of installations during overhauls.
Our machines can be optimally integrated into existing plants and lead to a significant stabilisation of the operational process. Operating companies benefit from a longer service life and a high level of availability due to low-maintenance and low-wear operation.
1. Inlet works / headworks:
9
INLET WORKS / HEADWORKS WE MAKE WATER TREATMENT WORK
Coarse screening Fine screening Screenings treatment
Sand treatment
Primary and secondary clarification Shut-off devices
SCREENINGS TREATMENT.
Efficient, ecological and responsible: Bilfinger Water Technologies develops
effective and economic solutions for the environmentally-friendly disposal of
screenings from municipal and industrial applications, both with and without
substrate wash-out.
The waste from coarse and fine screening processes, which poses hygienic concerns, must undergo further processing before disposal, due to its organic content and the build-up of odours. The soluble organic matter is washed out of the screenings by means of special washing systems. The screenings are subse-quently dewatered in presses to decrease the water content and reduce the weight by up to 85 per cent.
Apart from clearly positive aspects with regard to the environment, this leads to a substantial reduction in disposal costs. Moreover, a return of recycled waste from industrial applications into the materials cycle is often viable.
Bilfinger Water Technologies offers you special washing and pressing systems for municipal and industrial applications, which are tailored to your specific requirements.
1. Inlet works / headworks:
Coarse screening Fine screening Screenings treatment
Sand treatment
Primary and secondary clarification Shut-off devices
NOGGERATH® and JOHNSON SCREENS® presses
NOGGERATH® and JOHNSON SCREENS®
wash and press systems
NOGGERATH® and JOHNSON SCREENS® screw and wash presses
11
NOGGERATH® and JOHNSON SCREENS®
compact combi units
PASSAVANT®
grit chamber scrapers NOGGERATH® and JOHNSON SCREENS® sand washers NOGGERATH® and JOHNSON SCREENS® sand separators
GLOBAL BUSINESS UNIT WATER TREATMENT
SAND TREATMENT.
Bilfinger Water Technologies sand separators and sand washers are utilised to
reduce the water content, or respectively the organic content, in wastewater
treatment processes and thus contribute to both cost effectiveness and the
protection of the environment.
The rise in waste disposal costs is forcing the operators of sewage networks, wastewater treatment plants and industrial enterprises to separate reusable materials from waste materials. Our compact and robustly constructed sand separators and sand washers, for the treatment of grit trap screenings and sewer deposits, offer the possibility to transform the septic waste of today into a hygienically safe commodity of tomorrow. These installa-tions are characterised by a high degree of individuality, which is determined by the wide differences in the respective process media, catchment areas and recycling paths.
The cleaning process is supported in the grit traps by additional aeration systems which stir up floating matter and prevent organics from settling. As aeration alone is not sufficient, sand washers are then utilized to wash out the organics and ensure the separation of the organic content. The result: lower investment and operating costs which lead to a perceptible reduction in disposal costs.
Bilfinger Water Technologies also supplies combined and complete solutions which unite the entire inlet works / headworks in one system.
1. Inlet works / headworks:
13
INLET WORKS / HEADWORKS WE MAKE WATER TREATMENT WORK
Coarse screening Fine screening Screenings treatment
Sand treatment
Primary and secondary clarification Shut-off devices
PRIMARY AND SECONDARY
CLARIFICATION.
The aim of the primary and secondary clarification processes is to remove all floating
and settleable solids, as far as possible, and to draw off clear water. Bilfinger Water
Technologies develops robust, low wear scraper technologies for the removal of
sediments in circular and longitudinal tanks, which are suitable for a wide range of
installation conditions and requirements.
Primary clarification is normally installed downstream of the grit removal and completes the inlet works / headworks. After biological processing, the water / sludge mixture is separated in the secondary treatment process.
In order to separate the water from the solids, the wastewater is allowed to settle in sedimentation tanks so that the sludge is deposited on the tank bottom and the treated water can be drawn off via the launder channels. The sludge sediment is removed by means of scraper blades or suction pipes, whilst the floating matter is scraped from the surface of the water into an outlet channel. The scrapers move at a very low velocity, to avoid a renewed disturbance of the sediment from the bottom of the tank. Bilfinger Water Technologies offers you durable low wear scraper systems for circular and longitudinal tanks with a tried and tested robust and reliable construction.
1. Inlet works / headworks:
Coarse screening Fine screening Screenings treatment
Sand treatment
Primary and secondary clarification Shut-off devices
PASSAVANT® scraper technologies for longitudinal tanks
PASSAVANT® scraper technologies for circular tanks
15
SHUT-OFF DEVICES.
Control and transport systems are a fundamental part of process-based wastewater
treatment: products supplied by Bilfinger Water Technologies make a substantial
contribution to the safeguarding of process reliability, from the regulation of water inlets
and outlets, to the conveying of wastewater and waste material, to flood protection.
PASSAVANT® Shut-Off Devices play a central role in the manage-ment of flows of water / wastewater in drain and sewer systems: they enable a targeted regulation of water inlets and outlets, ensure the transport of water within municipal or industrial pipe, sewer and tank systems and offer reliable flood protection. PASSAVANT® Shut-Off Devices are also employed in rain water retention systems, drain network shafts, reservoirs, dams and the cooling towers of power stations.
Bilfinger Water Technologies can build on more than a hundred years of experience in the development and production of uncased shut-off devices. Strict quality standards guarantee a high level of safety and reliability, right down to the smallest detail.
PASSAVANT® Shut-Off Devices
1. Inlet works / headworks:
Coarse screening Fine screening Screenings treatment
Sand treatment
Primary and secondary clarification Shut-off devices
17
The highly complex requirements of the biological treatment must be viewed as a
whole, under varying environmental and framework conditions, assessed and then
implemented. Bilfinger Water Technologies develops tailored concepts to satisfy your
specific needs, which ensure stable degradation processes and comply your demands
regarding resource and cost efficiency.
After the inlet works / headworks, carbon and nitrogen com-pounds and phosphate remain dissolved in the wastewater and must be removed by means of biological processes. As these substances act as natural fertilizers, their disposal without further treatment would mean an over-fertilisation of bodies of water and have far-reaching consequences for the ecosystem.
In order to remove these harmful substances, the wastewater undergoes a number of individual processes. The nitrification process requires an oxygen rich environment to enable carbon degradation and oxidation of ammonium to nitrate. In the subse-quent denitrification phase, this nitrate is converted to nitrogen and thus removed from the water. The removal of phosphates is supported with an anaerobic environment in the Bio-P-Phase.
The wastewater / activated sludge mixture is enriched with the necessary oxygen by means of aeration systems. The water / sludge mixture, formed in the biological treatment, flows into the downstream secondary settling tank where sedimentation occurs. After the sludge has been deposited, the clarified water flows into the receiving water course.
Bilfinger Water Technologies has the benefit of many years of experience in the field of wastewater treatment and creates a wide range of concepts and technologies for the entire biological treatment of modern wastewater treatment processes: from aeration technology in the aeration tank, to process engineering optimisation measures, to scraper technology for circular and longitudinal tanks.
Aeration technologies System solutions for energy and process efficiency
2. Biological treatment:
2. THE BIOLOGICAL TREATMENT:
THE HEART OF THE
MODERN WASTEWATER
TREATMENT PROCESS.
19
Aeration tanks and the respective aeration equipment are at the core of modern
biological wastewater treatment plants. Modern wastewater technology calls for
efficient aeration systems which ensure a high level of technical flexibility with
maximum oxygen enrichment values.
AERATION TECHNOLOGIES.
Biological treatment in the aeration tank is aided by microrganisms which absorb and process dissolved substances. Aeration systems play an important role hereby, as they create an oxygen rich environment and promote the mixing of the sludge and water. Bilfinger Water Technologies offers a wide range of efficient aeration systems for the effective introduction of oxygen into the activated sludge, which are designed to meet various challenges and to be utilised in different applications, according to your specific requirements. Our technologies are characterized by their constantly high level of oxygen enrichment, robust and resilient construction and application flexibility.
The biological treatment is followed by the separation of the water / sludge mixture in the secondary clarification process. This final stage of the biological treatment aims to remove, as far as possible, all the floating and settleable solids and draw off clear water. In order to achieve high throughput rates and low turbulence levels, Bilfinger Water Technologies provides robust and almost turbulence-free scraper technologies for circular and longitudinal tanks which are also highly suitable for primary and intermediary clarification tanks.
Aeration technologies System solutions for energy and process efficiency
PASSAVANT® Surface Brush Aerator
MAMMOTH ROTOR®
PASSAVANT® Fine Bubble Aeration BIOFLEX®
PASSAVANT® Fine Bubble Aeration ROEFLEX®
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PC with AQUALOGIC® control system
process units e.g. • aeration
• precipitant dosage*
• process water dosage*
• ...* Bilfinger Water Technologies
remote maintenance control commands measuring signals control commands * Options Sensors measuring signals PLC
Overview of the basic structure of AQUALOGIC® control systems
aerobic / aeration phase anoxic / denitrification phase anaerobic / bio-P-phase
min. aeration dyn. aeration min. denitrification dyn. denitrification min. bio-P dyn. bio-P
oxygen
ammonium
redox potential
nitrate
phosphate
Progression of various measurement parameters in intermittent operation
Daily chart inflow nitrate aeration 1 ammonium aeration 1 ammonium aeration 2 oxygen aeration 1 oxygen aeration 2 nitrate aeration 2
SYSTEM SOLUTIONS
FOR ENERGY AND
PROCESS EFFICIENCY.
The various – partly counter-directional – processes in wastewater treatment plants
place heavy demands on technical implementation procedures. A comprehensive
approach is, therefore, required to ensure efficiency in the implementation of optimisation
measures. This is the only way to concurrently achieve the highest level of cleaning
performance, stable degradation processes and minimal energy consumption.
The efficiency of wastewater treatment plants is determined by optimal tuning of all prevailing conditions such as, for example, pH-values, concentrations of substances, the use of precipitants and the required energy input. We develop transparent and user-friendly systems to efficiently optimise and coordinate your specific treatment processes. Apart from the tailored oxygen input control for the aeration process, we supply a large num-ber of additional modules (process water dosing, precipitant dosing, recirculation control, sludge age control, etc.) and also solutions for pond treatment plants.
Our systems run with high operational reliability, have flexible measuring technology and achieve optimal process results with low energy consumption and reduced operating costs. Therefore, climate-damaging CO2 emissions can also be reduced. Hundreds of wastewater treatment plants are already profiting from our holistic approach to the optimisation of their processes.
Our portfolio includes:
▪ INTECH Process Efficiency AQUALOGIC® and ENERLOGIC®:
Load dependent aeration control and further important processes relating to biological treatment e.g. precipitant dosing, recirculation, sludge age control, etc.
▪ INTECH Process Efficiency AQUALOGIC LAGO®:
Modification concept for the improvement of performance in pond treatment plants
▪ INTECH Process Efficiency TSM-MODUL®:
Mixing system to improve efficiency in use of precipitants
23
BIOLOGICAL TREATMENT WE MAKE WATER TREATMENT WORK
Aeration technologies System solutions for energy and process efficiency
Increasing demands on the quality of wastewater, growing concerns regarding
the disposal methods used to date, and the need to retrieve raw materials from
wastewater currently provide the framework for the planning of sustainable
treatment technologies.
In the primary clarification stage, sewage sludge accrues when organic substances are degraded. This has to be purified, recycled or disposed of but there are currently no competent standard procedures for further processing. In some counties the disposal of sewage sludge is carried out at landfills, for example, whilst in others some of the sludge is used as a biological fertiliser in agriculture.
As an unrestricted disposal of sludge is no longer possible at every location and the pollution levels of the “fertilizer” are a cause for environmental concern, the demand for efficient and sustainable concepts for sludge treatment is increasing.
Regardless of subsequent disposal methods, it is advisable, from an economic point of view, to prepare the sludge for downstream processes. Separation procedures, in which solids are removed from the water phase, play a central role. Sludge treatment is necessary to reduce the volume and mass of sludge which accrues in the wastewater clarification process and to improve the possi-bilities for further utilisation. The effectiveness of the separation process has a decisive influence on the volume of sludge to be transported and disposed of.
With these aspects in mind, Bilfinger Water Technologies develops a wide range of systems and machines for sludge thickening and dewatering processes.
Sludge thickening Sludge dewatering
3. Sludge treatment:
3. SLUDGE TREATMENT:
ENVIRONMENTALLY-FRIENDLY
DISPOSAL AND EXTRACTION
OF RAW MATERIALS.
3. SLUDGE TREATMENT:
ENVIRONMENTALLY-FRIENDLY
DISPOSAL AND EXTRACTION
OF RAW MATERIALS.
25
SLUDGE THICKENING.
Sewage sludge is continuously produced in the course of wastewater clarification
processes, which is either utilized in further processing or disposed of. A rapid
concentration of the solids and a reduction of the sludge volume are the basis for the
efficient treatment and disposal of wastewater sludge in downstream processes.
The quantity of primary and surplus sludge is reduced as a result of sludge thickening procedures and disposal costs are, therefore, lowered. Special stirring and scraping mechanisms reduce the water content of the sludge in the sludge thickening tank and enable a continuous removal of still pumpable, free-flowing sludge into a collection hopper. Mechanical thickeners are used when rapid thickening is required for sludge which cannot be stabilised. These are suitable for both high and low throughput volumes and enable a high thickening concentration, in an economic process with low polymer consumption.
With its PASSAVANT® gravity thickeners and the PASSAVANT® Belt Thickener FluX-Drain, Bilfinger Water Technologies offers particularly economic solutions for your specific application requirements.
In addition to the planning and installation of entire fully operational sludge thickening plants, it is possible to easily integrate our systems into existing structures.
Sludge thickening Sludge dewatering
PASSAVANT® gravity thickeners PASSAVANT® Belt Thickener FluX-Drain
PASSAVANT® Belt Thickener FluX-Drain
27
JOHNSON SCREENS® screw presses
PASSAVANT® chamber filter presses
Dewatering is one of the most important processes in the entire water treatment
procedure. As the burning of sewage sludge, or its disposal at a landfill site, both
involve costs, sludge dewatering pays off, particularly when several tons accrue
each day.
SLUDGE DEWATERING.
After the sludge has been stabilised and thickened, as far possible, it still retains a fluid consistency. The mechanical sludge dewatering process then enables the separation / removal of a portion of the sludge water and thus reduces the total volume. Flocculating agents are added, which effect a separation of the water from the sludge as a result of different electric charges. Sewage sludge can be used in agriculture, in so far as it complies with statutory sewage sludge regulations. The disposal methods are either burning or landfill sites, depending on the local frame-work conditions.
Bilfinger Water Technologies, with its PASSAVANT® and JOHNSON SCREENS® brands, provides economic sludge dewatering processes which achieve optimal results with low polymer consumption. The technical procedure involves the separation of water in a continuous process with a combination of separation by gravity and by pressure. Mechanical dewatering is always recommended when there is a demand for economically viable volume and weight reduction, with a maximum possible solids concentration, combined with an optimal yield of clarified water. Our machines are universally adaptable and are, therefore, amongst the most utilized sludge dewatering machines worldwide.
29
SLUDGE TREATMENT WE MAKE WATER TREATMENT WORK
Sludge thickening Sludge dewatering
4. FINE AND MICRO-SIEVING /
SCREENING – THE FINAL STEP
TOWARDS CLEAN WATER.
Micro-sieving / screening is the last stage in the water intake procedure and plays a
particularly important role as downstream installations such as pumps and capacitors
must be reliably protected against breakdowns. Solids and / or contaminants are
separated from the liquid phase and removed for disposal or recycling.
With its rotary drums, micro screens and underdrain systems for gravity filters, Bilfinger Water Technologies offers effective and economic solutions for water purification, wastewater treatment and the processing of recyclable material.
Fine and micro-sieving / screening is based on mechanical processes. Various screening technologies form the basis for the separation of liquids and solids and are decisive to the success of practical applications. Screening is carried out either statically or dynami-cally, whereby both processes can be effected in a continuous or discontinuous mode. Rotary drum, micro and underdrain screens are employed for fine and micro-sieving / screening in gravity filter systems.
Micro screen systems with rotating drums are an effective and cost effective alternative to conventional rakes and screens in municipal wastewater technology applications. Our underdrain screening components are suitable for use in the purification of drinking or process water and also as a third clarification stage or for complex filtration applications.
Rotary drum and sieve systems Underdrain screening systems
4. Fine and micro-sieving / screening:
31
Bilfinger Water Technologies has a broad portfolio of internally and externally loaded rotary drum and micro screen systems, which have been successfully employed for many years in the sepa-ration of solids and liquids in municipal wastewater treatment plants and for the treatment of industrial process water. The heart of the internally loaded screen design is a robust rotating screen drum in which the solids are retained, carefully dewatered and then discharged from the system. Externally loaded rotary drums are particularly suitable for floating, greasy and sticky solids which can be reliably separated via the surface of the rotary drum screen.
Micro screen rotary drum systems are an effective and economic alternative to conventional screening systems in municipal waste-water treatment plants and are excellently suited to the treatment of surface water. Micro screen rotary drum systems can be used in a wide range of applications as they offer the possibility to utilise diverse meshes made of a wide variety of materials. Our micro screens can reliably filter out the finest particles from flows of water and wastewater with a convincingly high separation performance and low cost in continuous operation.
ROTARY DRUM
AND SIEVE SYSTEMS.
Rotary drum screens separate, filter and sieve floating matter and particles from
liquids, process water and wastewater. Each rotary drum screen is specifically
designed for the respective application. A differentiation is, therefore, made between
screen types which are loaded internally or externally. When ultra fine particles have
to be filtered out of flows of water and wastewater, micro-sieving / screening
technologies come into play.
Rotary drum and sieve systems Underdrain screening systems
NOGGERATH® and JOHNSON SCREENS®
rotary drum screens
NOGGERATH® and JOHNSON SCREENS® micro screen rotary drum systems
33
JOHNSON SCREENS® underdrain screening systems media water TRITON UNDERDRAIN ™ distributor central channel
Bilfinger Water Technologies offers underdrain screening systems for filter
installations as an optimal and cost-effective solution for the filtration of water,
wastewater and process water, in order to improve wastewater collection and
provide an optimal distribution of air and water in the backwash tank.
JOHNSON SCREENS® TRITON UNDERDRAINS™ are a drainage system offering the optimal solution for both new installations and filter refurbishment, which is employed as an alternative to the conventional filter nozzle bottom in wastewater treatment plants. These systems are mainly installed in open filter tanks but special applications are also possible in closed pressure filters. The system guarantees optimal collection and distribution of filtered wastewater with a direct retention of the filtered material.
The main advantages of the JOHNSON SCREENS® TRITON UNDERDRAINS™ are their low construction height and variable gap widths of up to 0.150 mm. The gap can be adjusted to suit the filter material and supporting layers are, therefore, no longer necessary.
The TRITON UNDERDRAINS™ are available in stainless steel and PVC and guarantee a high level of strength and durability with maximum open surface area. They thus offer you the opportunity to optimise the efficiency of your treatment plants.
UNDERDRAIN SCREENING.
35
FINE AND MICRO-SIEVING / SCREENING WE MAKE WATER TREATMENT WORK
Rotary drum and sieve systems Underdrain screening systems
NOGGERATH® Ball Check Valve
NOGGERATH® pumps
Bilfinger Water Technologies has a broad portfolio, offering you the optimal pump
solution for your application field. The components can be perfectly integrated into
your process chain to ensure that all your processes run smoothly and efficiently.
All our products are based on the highest safety and quality standards which have
been certified numerous times.
Whether it is a question of conveying lightly contaminated, coarse or abrasive wastewater in pumping, wastewater or industrial production installations, or the transport of liquids in aquacultures or agriculture: we offer you solutions which are perfectly tailored to your specific application purposes. In addition to various pumping technologies such as vortex pumps, one and multi channel pumps, grinder pumps or drainage pumps, the newly extended NOGGERATH® pump range also includes mixers and ball check valves.
The technologies supplied by Bilfinger Water Technologies are of the highest possible quality, 100 per cent reliable and integrate perfectly into your specific conveying system. Our technologies achieve a continuously outstanding performance as confidence in the reliability of each and every individual component is particularly important in processes with high throughput volumes, complex conveying and problematic substances.
Our robust low-wear products perform efficiently, with longer maintenance intervals and high operational dependability. Thanks to their innovative design and the special materials used, they are able to operate reliably and practically free of blockages.
5. PUMP TECHNOLOGIES
FOR EFFICIENT AND
RELIABLE CONVEYING.
37
PUMP TECHNOLOGIES WE MAKE WATER TREATMENT WORK
AFTER-MARKET & FIELD
SERVICES – SYSTEMATIC,
RELIABLE AND GLOBAL.
We, as a multidisciplinary team of specialists, think and act with a direct focus on
customer needs. We use direct communication routes to find swift and efficient solutions
to each and every problem. We happily take on any challenge in order to constantly
provide the high quality standards set out in our service concept and we put them into
practise on a day to day basis. We understand the term “full service” as a dynamic
task and are open to change and any comments or suggestions you may wish to make.
Our constant objective is your satisfaction with us and our products, as we are aware that only top quality in both production and service will enable you to profit from durable machine functionality and efficiency, low operational and investment costs and reliability in all stages of your processes.
Whether it is a question of a new installation, commissioning, maintenance, spare parts, repair or refurbishment, our top priority is to offer you expert advice and effective remedies. Moreover, we have a wide range of special parts and spare parts which are developed and manufactured in our own certified workshops (DIN EN ISO 9001:2008) and which undergo strict controls before dispatch. We are able to develop an effective solution to suit your individual requirements with the help of a comprehensive analysis, a wide network of expertise and compliance with prevailing legal conditions – naturally this also applies to installations and components from other manufacturers.
We realise that breakdowns, production downtimes and machine failures are both extremely annoying and expensive. This is why our dedicated team is at your service with state-of-the-art technology, at all times, both within Germany and abroad. Spare parts or service call-outs can be requested around the clock. You will receive competent support via our service hotline 24 hours a day and 365 days a year.
Strong team – strong service.
Our full service concept
commissioning
EM SR
R
efurbishment Repairs
Ove rhau ls Installation & M ain tenan ce Spa re p arts servi ce A dvice Bilfinger Water Technologies Service 39
Water Technologies
Bilfinger Water Technologies GmbH Global Business Unit Water Treatment Passavant-Geiger-Strasse 1 65326 Aarbergen Germany Phone +49 6120 28-0 Fax +49 6120 28-2182 info.water@bilfinger.com www.water.bilfinger.com
