SOP - STP

GENERAL COMMISIONING PROTOCOL - STP

GENERAL COMMISIONING PROTOCOL - STP

Contents:

Contents:

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2.1

2.1 Raw

Raw Sewage

Sewage T

Transfer

ransfer Pump

Pump

2.2

2.2 Star

Start Of A

t Of Aerati

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2.3

2.3 R

Recir

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2.

2. !isi

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3.

1.0 START-UP PROCESS:

1. C#ec$ t#e %nlet parameters of t#e %nlet Sewage.

2. C#ec$ if t#ere is su&cient sewage in t#e collection tan$. %f t#e Sewage is insu&cient' STP can(t wor$ properl". Sewage s#oul) *e minimum 3+, of Plant capacit".

3. -efore Starting t#e raw sewage transfer pump' open t#e al/e.

2.0 STARTUP OF PLANT:

2.1 Raw Sewage Transfer p!p

1. 0or starting t#e Pump' turn on t#e Switc# locate) on t#e lectric Control Panel CP. After Starting' c#ec$ t#e Pressure 4auge for )isc#arge Pressure to c#ec$ t#at t#e pump is lifting water w#ic# is use) to transfer t#e sewage from collection tan$ to aeration tan$

2. A)5ust t#e /al/e to regulate t#e )esire) 6ow.

3. C#ec$ t#e sewage le/el in t#e aeration tan$. 0ill t#e tan$ till 3+, of t#e /olume.

2.2 S"ar" #f Aera"$#n Pr#%ess

. Start t#e *lower from t#e CP after c#ec$ing oil le/el an) open t#e /al/e so t#at t#e air 6ows to t#e aeration tan$.

7. C#ec$ t#e aeration in t#e aeration tan$ to con8rm t#at t#e )i9users are wor$ing 8ne. %n case if t#e water is not getting agitate)' $in)l" c#ec$ t#e /al/e of t#e *lower again.

. ;aintain t#is le/el till for a*out 12 to 17#rs time an) t#en again 8ll t#e aeration tan$ to <7, of t#e /olume *" switc#ing on t#e raw sewage transfer pump from CP.

<. ;aintain t#is le/el for a*out 12 #rs to 17 #rs time an) again after t#at' 8ll t#e aeration tan$ to free *oar) le/el.

=. >eep t#e water maintaine) in t#e aeration tan$ for anot#er 2 #rs.

?. Ta$e a *ea$er@ar an) collect t#e water sample from aeration tan$ an) c#ec$ t#e soli) slu)ge settling time. Usuall" it s#oul) *e less t#an 7 mins.

1+. %f t#e settlement time of t#e slu)ge comes )own to less t#an 3+ mins an) wit# goo) clarit" of  water' t#en switc# on t#e raw sewage transfer pump an) o/er6ow t#e aeration tan$. %f t#e settlement time is more' $in)l" maintain t#e retention time for neBt 12 #rs in aeration tan$ an) c#ec$ t#e sample again till' we get t#e result.

 T#e o/er6ow from t#e aeration tan$ is t#en transferre) to tu*e settler w#ere t#e #ea/" slu)ge particles woul) settle )own. #en t#e le/el of tu*e settler reac#es a*out 3+ , – 7+,. Open t#e /al/e for aeration tan$ from tu*e settler.

11. Switc# o9 t#e raw sewage transfer pump.

12. Start t#e recirculation pump an) maintain it for 12 to 17 #rs time.

13. Ta$e t#e sample from aeration tan$ an) c#ec$ t#e Dualit" for settling of soli)s. T#e ;ESS s#oul) *e atleast 17++ mg@l *" t#is time perio). %f t#e sample Dualit" is goo) t#en procee) a#ea) ot#erwise' increase t#e le/el of tu*e settler *" switc#ing on t#e raw sewage transfer pump to <7, an) $eep recirculation pump on to t#e aeration tan$ for neBt 12 #rs. Repeat t#e proce)ure till )esire) Dualit" is ac#ie/e).

1. >eep c#ec$ing t#e le/el of t#e settle) slu)ge in t#e aeration tan$. %t is *etter to maintain it in *etween 27, to 7, *" )oing t#e 5ar test.

2.& Re%$r%'a"$#n Pr#%ess

17. Tu*e settler is use) to settle t#e Slu)ge an) to 6ow t#e clari8e) water to t#e later process 1. Start t#e raw sewage transfer pump an) $eep it running till t#e o/er6ow from Tu*e settler to

c#lorine contact tan$@#ol)ing tan$ #appens.

1<. T#e recirculation pump s#oul) run for a*out  to 12 #rs )epen)ing on t#e slu)ge Duantit". %f  t#e water in t#e tu*e settler starts turning *lac$' t#en t#e freDuenc" an) t#e time perio) of t#e recircuation pump nee)s to *e increase).

1=. After = to 17 )a"s of time t#e slu)ge collecte) in t#e tu*e settler nee)s to *e )iscar)e). 0or t#e same' close t#e /al/e to t#e aeraton tan$ an) open t#e /al/e for t#e slu)ge #ol)ing tan$. C#ec$ t#e le/el of )isinfection c#emical in t#e c#lorine tan$.

1?. After Settling Process' Acti/ate) Slu)ge in t#e -ottom place is transferre) wit# t#e Felp of  Slu)ge Recirculation Pump. An) remaining water transferre) in t#e Fol)ing tan$ /ia o/er6ow.

2+. %f we want to transfer Acti/ate) Slu)ge in t#e Slu)ge Fan)ling s"stem' Open t#e al/e *etween t#e Return Circulation pump an) Slu)ge Fan)ling s"stem an) t#en turn on t#e Pump from CP. Slu)ge Recirculation Pump run on t#e -asis of Acti/ate) Slu)ge. An) t#en Turn o9 t#e Pump after 0inis#ing t#e transfer of Acti/ate) Slu)ge.

2.( )$s$nfe%"$#n S*s"e!

21. After O/er6owing t#e tu*e settler' t#e water is transferre) into t#e Fol)ing Tan$. T#e C#lorine is use) for )isinfection. e #a/e to )ose 2G3 $g per )a" so #a/e to Set t#e )osing Pump at certain le/el + – 7 EPF.

22. Start t#e )isinfection s"stem from CP if pro/i)e) *" )osing t#e c#emicals in t#e c#lorine contact tan$@#ol)ing tan$.

FIG: 1.1 FIG: 1.2

&.0 TERTIAR+ PROCESS:

1. After 0illing t#e Fol)ing tan$ upto minimum of +, of t#e /olume' we #a/e to start 0ilteration s"stem.

2. 0ill t#e /essel wit# water to co/er me)ia. 0lus# t#e s"stem H pipeline wit# water wit# starting raw water pump@*ac$was# pump H )rain it gi/ing *ac$was# for one #our.

3. ait for 1+ minutes an) t#en Start 0ilter 0ee) pump@*ac$was# pump after setting multiport /al/e into *ac$was# mo)eH air /ent /al/e H remo/e air from t#e /essel.

. Close )own air /ent /al/e H $eep /al/e in *ac$was# mo)e.

7. A)5ust t#e 0ilter 0ee) pump for *ac$was# 6ow' w#ic# is generall" recommen)e) 1.7 to 2 times t#at of ser/ice 6ow or refer PH%! for t#e 6ow )esign.

<. Jow switc# o9 0ilter 0ee) pump' close *ac$was# /al/e H open ser/ice inlet *" setting /al/e on ser/ice mo)e H open air /ent /al/e.

=. Again Start 0ilter 0ee) pump @ *ac$was# pump H remo/e air from t#e /essel.

?. Set t#e /al/e into rinse mo)e H close air /ent /al/e after water 6ow comes out from air /ent pipe in full 6ow.

1+. Jow set t#e /al/e into ser/ice mo)e an) t#e s"stem woul) *e rea)" to *e use). 11. nsure water Dualit" at inlet H output from outlet H ta$e unit in Ser/ice c"cle. 12. Recor) %nput H Output Dualit" of t#e unit.

13. %f t#e Kualit" is goo) an) wit#in t#e )esire) parameters t#en water is transferre) to t#e  Treate) ater tan$.

Opera"$#n Se,en%e f#r F$'"era"$#n S*s"e!: ALE SE.UENCE OF PSF/ACF FILTER SR. JO. CLCE SR . %@E SR . O@E -AC>AS F_%@E -AC>AS F_O@E A%R -EO R_%@EM R%JS  O@E A%R J  T 0! PU;P -AC>AS F PU;P  T%; ;in 1 Ser/ice

Air ent Open G G G G G Open OJ O00 1+ to 17

2 Rinse

C"cle Open G G G G Open G OJ O00 1+ to 17

3 Ser/ice Open Open G G G G G OJ O00 12++M



-ac$wa s#_it# air .ent

G G Open G G G Open O00 OJ 2 to 7

7 _-ac$was G G _{Open Open} G G G _O00 OJ _{7 to 17}

Please note: T#e *ac$was# s#oul) *e )one w#ene/er t#e inlet an) outlet pressure of t#e P0S or AC0 is more t#an +.< *ar pressure irrespecti/e of t#e ser/ice time. T#e *ac$was# s#oul) *e )one till t#e )i9erential pressure re)uces to regular pressure.