Stabilisation Ponds
Performance Evaluation of Waste Stabilisation Ponds
... The growing investment in water supply and reticulation in Botswana has re- sulted in many households’ connections and large quantities of wastewater gen- erated which needs adequate treatment to meet national standards ...
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Biological phosphorus removal by microalgae in waste stabilisation ponds : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Environmental Engineering at Massey University, Palmerston North, New Zealand
... waste stabilisation ponds (WSP) is governed by the rate of phosphorus incorporation into the sludge layer and the rate of phosphorus release from this sludge back to the overlying ...
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Studies into the hydraulics of waste stabilisation ponds : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Environmental Engineering at Massey University, Turitea Campus, Palmerston North, New Zealand
... The objective of this experimental work was to obtain data on the speed and direction of the fluid movement in the model pond. Many instruments typically used for hydraulic research were ruled out because very low ...
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Algal growth response in a range of light and temperature conditions: implications for non steady state conditions in waste stabilisation ponds
... waste stabilisation ponds (WSPs) are subject to seasonal variations in light and temperature: in extreme cases this may include ice cover for extended periods in ...
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Water Quality Index of Waste Stabilisation Ponds and Downstream of Discharge Point
... This study assessed the quality of effluent from waste stabilisation ponds system and in the receiving environment through the calculation of physiochemical and microbiological water quality indices. The ...
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Waste stabilisation ponds in extreme continental climates: a comparison of design methods from the USA, Canada, northern Europe and the former Soviet Union
... facultative ponds: Areal Loading Rate, Gloyna, Marais-Shaw, Plug Flow and Wehner- ...facultative ponds can be adapted by allowing for the extra storage volume required (US EPA, ...
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Evaluation of baffles for optimisation of waste stabilisation ponds : a thesis presented in partial fulfilment of the requirements for the degree of Master of Engineering in Environmental Engineering at Massey University, Palmerston North, New Zealand
... The stub baffie can also be used as in the second field trial In that instance, a turned inlet produced a flow pattern that ' hugged ' the walls around the outside of the pond, a stub ba[r] ...
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Evaluation of baffles for optimisation of waste stabilisation ponds : a thesis presented in partial fulfilment of the requirements for the degree of Master of Engineering in Environmental Engineering at Massey University, Palmerston North, New Zealand
... The final phase of work involved two tracer studies carried out on a field pond, utilising a modified inlet, then a combination of a modified inlet and the inclusion of a short stub baff[r] ...
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Cyanobacterial and microcystins dynamics following the application of hydrogen peroxide to waste stabilisation ponds
... tion (Glaze et al., 1987). Microcystins can also be destroyed by UV radiation through isomerisation, and photosensitised transformation in the presence of humic substances and pig- ments (Song et al., 2007; Tsuji et al., ...
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Influence of annual climate variability on design and operation of waste stabilisation ponds for continental climates
... The limitations of the modelling approach are discussed briefly in Heaven et al (2005). Sensitivity analysis and statistical parameters are dealt with in another paper (Salter et al., in preparation), and are not ...
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Copper Toxicity of Four Different Aquaculture Ponds
... the ponds with 50 mL plastic water bottle in the afternoons at 1 pm weekly for 12 weeks between February and April ...the ponds were also measured in situ at the same time for the same period using Hanna ...
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Soil stabilisation in road pavements
... the stabilisation process has not been studied as part of this project, however it may be concluded that the aggregate from the wearing course is affecting the particle size distribution and plasticity of the ...
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Ferrocenylketones and the stabilisation of their thio analogues
... The chemistry of dicyclopentadienyl iron, given the trivial name ferrocene 1 , began soon after its initial discovery^ w hen Woodward^ pointed out that the ferrocene system would underg[r] ...
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The role of rice fields, fish ponds and water canals for transmission of fish borne zoonotic trematodes in aquaculture ponds in Nam Dinh Province, Vietnam
... within ponds to some extent was re- lated to density of the intermediate host snails and al- though our results did not determine the importance of especially small canals, these habitats probably are import- ant ...
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Influence of the Quality of Maintenance of Fish Ponds on the Biomass of Zooplankton in situ in Tropical Zone (Yaoundé-Cameroon-Central Africa)
... of fish farming would not only cover huge animal protein needs but would also reduce the massive outflow of foreign exchange [9]. However, Cameroon like several middle- income countries, has been working with FAO for ...
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Shallow pond systems planted with Lemna minor treating azo dyes
... control ponds containing tap water and fertiliser are beyond European and international standard thresholds ...control ponds, using tap water and fertiliser, followed by control ponds comprising ...
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The ecology and biodiversity of urban ponds
... urban ponds is currently poorly quantified and ...urban ponds are likely to be located in residents’ gardens and represent a habitat that is almost completely unknown, although the high quality urban ...
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Mathematical Model of a Salinity Gradient Solar Pond A. Renuka Prasad
... Solar ponds are one of the simplest and less expensive technologies for converting and storing solar ...Solar ponds can be operated at virtually all latitudes and can provide energy for space heating and ...
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A Review on Sustainable and Cost Effective Wastewater Treatment Systems for Rural and Peri Urban Communities up to 10,000 PE
... In a first pond (anaerobic pond), solids and settleable organics settles to the bottom forming a sludge, which is, digested anaerobic by microorganism. In a second pond (facultative pond), algae growing on the surface ...
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Excavated Ponds (MN DNR)
... L andowners frequently ask natural resource agencies how they can improve their land for waterfowl and other wildlife. Many people wonder if excavating ponds will help. They often inquire about excavating, or ...
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