1. Cov nplai faib ntawm nroog dej phwj tuaj kho cov nroj tsuag
Raws li qhov teeb meem tiag tiag, nws tuaj yeem sib faib uaLoj, Nruab Nrab thiab Cov Khoom Phwj Me Me Nroj Tsuag Nroj Tsuag.
Nplai> 10 × 10 ^ 4 m3 / dyog qhov loj-teev cov dej pheeb zog, uas feem ntau ua hauv lub nroog loj, nrog cov peev txheej hauv 100 lab thiab cov lej txhua xyoo ntawm 10 lab yuan.
Nplai ntawm nruab nrab-sized dej phwj dej yog (1~10)×10^4 m3/d, uas feem ntau ua hauv cov nroog me thiab nruab nrab thiab cov nroog loj, nrog rau cov nroog loj, thiab cov nqi txhua xyoo ntawm ntau lab lab ntawm ntau lab ntawm Yuan.
Cov dej phwj me me kho cov nroj tsuagnplai ntawm <1 × 10 ^ 4 m3 / dfeem ntau ua hauv cov nroog me, nrog cov txheej txheem txheej txheem nqis peev ntawm ntau lab lab, thiab cov raug ua haujlwm txhua xyoo ntawm ntau pua rau ntau lab; Vim tias kev siv nyiaj txiag, xws li cov dej phwj tuaj feem ntau tshwm sim hauv cov nroog me nrog kev tsim kev lag luam hauv cov ntug hiav txwv.
2. Cov txheej txheem tseem ceeb ntawm nroog dej phwj hauv nroog
Lub patutant tseem ceeb ntawm lub nroog dej khib nyiab yog cov organic teeb meem, yog li feem ntau ntawm lawv yog tam sim no roj ntsha. Kuj tseem muaj cov qauv tshuaj lom neeg, xws li siv cov qauv siv tshuaj ua ntej, tab sis tsuas yog tsim nyog tau raws li cov chaw tshwj xeeb uas muaj cov kev xav tau zoo tshaj plaws uas yuav tsis siab.
Nyob rau hauv txoj kev lom neeg, muaj ob pawg ntawm kev ua haujlwm sludge kev siv hluav taws xob tsis zoo, muaj ntau yam kev siv roj ntsha dej hauv nroog
Muaj ntau hom kev ua haujlwm sludge txoj kev, thiab muaj peb lub ntsiab ntawm cov sludge uas yog qhov feem ntau siv:
● (1) antidated sludge txoj kev thiab nws txhim kho A / O thiab A2 / O cov txheej txheem
● (2) oxidation plhaw
● (3) sbr cov txheej txheem
Cov kev ua haujlwm tsoos ua haujlwm sludge yog qhov ua tiav cov txheej txheem ntawm kev tshem tawm cov txheej txheem ntawm kev kho mob hauv nroog Hauv 20 xyoo dhau los, kev tsim txom ntawm cov dej Eutrophication tau ua ntau dua thiab phosphorus tau muaj nyob rau hauv lub hom phiaj ntawm cov txheej txheem dej phwj tuaj, yog li kev txhim kho cov txheej txheem sludge tau tshwm sim. Muaj ob hom kev kawm ntawm A / O yog ib qho txheej txheem anaerobic-aerobic rau phosphorus tshem tawm, thiab lwm yam yog anoxic-aerobic-aerobic-aerobic-aerobic-aerobic-aerobic-aerobic cov txheej txheem rau kev txwv; A2 / O txoj cai yog tus txheej txheem uas tshem tawm ob qho tib si nitrogen thiab phosphorus.
Oxidation Ditch yog qhov sib txawv ntawm kev ua haujlwm rau kev ua kom txaus ntshai, uas yog txawv ntawm cov kev ua haujlwm tsoos ua rau cov kev ua kom txaus siab, thiab yog qhov kawg ntawm kev tawm tsam hydraulic, thiab yog qhov sludge yog ruaj khov thaum lub taub dej yog huv. Nws tsis muaj thawj lub viav vias loj lossis sludge digter, thiab cov chaw kho mob tau yooj yim heev. Cov oxidation ditch muaj qhov zoo ntawm cov kev ua kom zoo nkauj, uas muaj teeb meem zoo hauv kev tshem cov organic teeb meem thiab tseem muaj txoj haujlwm ntawm kev txwv tsis pub. Yog tias lub pas dej anaerobic tau ntxiv rau pem hauv ntej ntawm cov kwj deg, phosphorus tseem tuaj yeem raug tshem tawm tib lub sijhawm. Qhov siab ua tau zoo thiab yooj yim ntawm oxidation ditch ua rau nws dav siv hauv cov nroj tsuag me me thiab nruab nrab hauv nroog.
SBR yog ib qho tshwm sim batch ua kom zoo ua rau cov txheej txheem sludge, nws cov ntsiab lus tseem ceeb yog kom tiav cov tshuaj tiv thaiv biochemical, cov chaw kho mob kom yooj yim, tab sis kuj tsis yog cov txheej txheem SBETTER, tab sis kuj tseem muaj cov txheej txheem SBRETTER phosphorus tshem tawm haujlwm. Xyoo tsis ntev los no, kev thov ntawm kev tswj tsis siv neeg siv tshuab thiab cov twj rau dej phwj tuaj tau dhau los, thiab tau dhau los ua cov txheej txheem uas kev lag luam muaj kev txhawj xeeb heev txog.
3. Cov txheej txheem uas nyiam tshaj plaws ntawm cov nroog loj loj hauv nroog muaj cov nroj tsuag
Cov txheej txheem uas nyiam tshaj plaws rau cov tub rog hauv nroog loj Tam sim no, feem ntau ntawm cov loj nplai cov dej hauv ntau lub ntiaj teb (suav nrog cov qauv tsoos
(1) Kev siv hluav taws xob tsawg thiab cov kev lag luam tsis muaj nuj nqis
Qhov loj tshaj plaws zoo ntawm cov kev ua si tsoos ua haujlwm sludge, A / O thiab cov kev siv nyiaj qis dua, thiab cov nplai ua haujlwm loj dua, qhov pom tau ntau dua qhov txiaj ntsig no. Rau qhov loj-teev cov dej phwj tuaj, cov nqi ua haujlwm txhua xyoo, piv txwv li, cov kav dej phwj
Cov laj thawj rau kev siv hluav taws xob tsawg thiab kev ua haujlwm cov nqi ntawm cov txheej txheem no yog: a. teeb tsa thawj cov txheej txheem hauv paus, siv txoj kev tawm dag zog kom tshem tawm ib feem ntau ntawm cov organic thiab tus nqi tsawg kawg nkaus, txo qis kev noj hluavtaws; b. Cov sludge adopts anaerobic kev zom, uas txuag lub zog piv ntawm cov oxidation ditch thiab sbr cov txheej txheem, thiab yog ib qho txheej txheem ntawm kev txuag hluav taws xob.
Cov peev txheej hauv cov txheej txheem no feem ntau siab dua li ntawm Oxidation Ditch thiab SBR kuj nce ntxiv, thiab kev sib tw ntawm ob leeg tau txais me dua thiab me dua. Thaum cov dej phwj tuaj ncav cuag ib qho kev ntsuas, kev nqis peev ntawm cov kev ua kom zoo nkauj yog tsawg dua li ntawm cov dej phwj tuaj ua haujlwm, yog qhov zoo dua qhov zoo ntawm cov kev ua haujlwm ua kom tiav sludge txoj kev.
(2) txhim kho qib kev tswj hwm
Lub ntsiab tseem ceeb ntawm kev ua haujlwm sludge txoj kev, thiab cov roj ntsha ua haujlwm tau yooj yim, uas yuav tsum muaj ntau txoj kev kho mob hauv plab thiab cov khoom siv hluav taws xob hnyav, uas yuav tsum muaj kev nyab xeeb rau kev tswj hwm. Txawm li cas los xij, vim qhov tseeb tias cov dej phwj tuaj loj tau rov qab los ntawm lub nroog loj, muaj qhov ua tau zoo, muaj peev xwm tswj hwm tau ua tiav cov txheej txheem sludge ua rau muaj kev txwv.
Raws li qhov kev muaj tiag tam sim no, vim yog qhov tsis zoo ntawm cov dej ntws tawm ntawm cov kev noj khwv haus ntawm cov kev noj haus huv ntawm lub nroog Yog li ntawd, rau cov kev kho kom huv si cov nroj tsuag nrog lub sijhawm (10 ~ 20) × kev lag luam, nws yuav tsum tau ua cov txheej txheem thev naus laus zis ntau ntxiv los txiav txim siab rau ntau txheej txheem.
4. Cov txheej txheem uas nyiam dua ntawm cov me me thiab nruab nrab hauv nroog loj hauv nroog kho cov nroj tsuag
Cov txheej txheem uas nyiam tshaj plaws rau cov nroj tsuag kom loj thiab nruab nraboxidation ditch thiab sbr, thiab lawv cov yam ntxwv muaj:
(1)
Kev ua tau zoo ntawm kev tshem cov organic muaj txiaj ntsig heev, thiab nws kuj tau yooj yim heev, thiab kev kho mob nitrogen thiab phosphorally yooj yim, thiab nws tau yooj yim heev, thiab nws yog qhov yooj yim hauv nroog
(2)
Hauv qab cov nplai ntawm 10 × 10 ^ 4 m3 / d, cov txheej txheem oxidation thiab sbr txoj kev ua haujlwm tau qis dua li ntawm kev ua pa tawm ntawm cov txheej txheem sludge, A / O thiab A2 / O. Rau cov dej phwj tuaj tua cov nroj tsuag nrog lub ntsuas ntawm (5 ~ 10) × 10 m3 / d, lub peev txheej siv oxidation ditch thiab sbr txoj kev siv tau 10% ~ 15% qis dua. Qhov me me me me, qhov ntau dua qhov sib txawv ntawm ob, uas yog qhov txaus nyiam rau me me thiab nruab nrab lub zos uas tsis muaj cov nyiaj siv pov tseg.
Txawm nyob hauv qab qhov ntsuas ntawm 10 × 10 ^ 4 m3 / d, cov nqi siv oxidation, tab sis yog tias muab cov nqi ntawm cov roj ntsha Qhov ntsuas me me, qhov qis dua cov nplai, qhov me me ntawm qhov sib txawv, thiab thaum cov qhab nia me me, thiab thaum tus nqi tsawg ntawm ob hom kev ua kom muaj kev sib piv. Yog li ntawd, nws yog kev ua kom muaj txiaj ntsig zoo los siv oxidation ditch thiab sbr txoj kev rau me thiab nruab nrab-loj me me.
(3)
Cov tshuaj oxidation thiab cov txheej txheem sbras feem ntau tsis muaj qhov yooj yim kav dej, thiab kev tswj hwm tau yooj yim rau cov nroj tsuag sludge kev kho mob thiab qib kev tswj hwm tsawg dua.
(4)
Cov khoom siv ntawm oxidation ditch thiab sbr cov txheej txheem tau muaj zog, uas tuaj yeem ua tau raws li cov txheej txheem uas yuav tsum muaj ua khoom zoo thiab pheej yig.
(5)
Qhov cuam tshuam kev cuam tshuam ntawm oxidation ditch thiab sbr cov txheej txheem zoo dua li cov pa roj hmab ua kom zoo dua thiab nruab nrab ntawm cov dej tsis zoo thiab muaj nuj nqis.
Nws yog rau tag nrho cov laj thawj uas oxidation ditches thiab sbrs tsim sai. Lub Tebchaws Asmeskas Partmenteral tiv thaiv (EPA) tau teev cov nyiaj txiag ntau tshaj li 15 feem pua ntawm kev ua haujlwm nyiaj txiag hauv tsev kawm ntawv, thiab ntau pua ntawm cov nroj tsuag dej khib nyiab tau tsim. Muaj ntau txhiab tus oxidation ditch dej huv cov nroj tsuag hauv Tebchaws Europe, thiab ze li ntawm 600 txhawm rau cov khoom siv hluav taws xob tau ua hauv Australia hauv 10 lub xyoo dhau los. Nyob rau hauv Suav teb, oxidation ditch thiab sbr cov txheej txheem tau dhau los ua cov txheej txheem uas nyiam dua rau cov nroj tsuag dej me me thiab nruab nrab.
5. Lub ntsiab ntawm kev faib tawm thiab cov yam ntxwv ntawm Oxidation Ditch tus txheej txheem
Txheej txheem oxidation ditch ua tau dav dav ua plaub pawg:
(1) Ntau-Groove Alternating Oxidation Ditch
Nws yog tus cwj pwm los ntawm hom kev tsim kho sib xyaw, tsis muaj ib qho kev ua kom tiav cais tawm ntawm lub taub hau. Nws muaj ib leeg-ditch thiab peb-ditch hom, feem ntau cov uas yog handir oxidation ditch. Qhov no oxidation ditch muaj cov yam ntxwv ntawm cov txheej txheem ntawm SBR, thiab tseem tuaj yeem raug tshem tawm tsis ruaj khov, yog tias nitrogen thiab phosphorus tshem tawm, qee qhov chaw yuav tsum tau ntxiv.
(2) Carrousel oxidation ditch
Nws yog cov hom cais, muaj nyias cov txheej txheem areerator itation, yog qhov xav tau ntawm kev tshem tawm cov oxidation,
(3) Obel oxidation ditch
Nws kuj tau muab faib ua ob qho chaw tso pa tawm, siv qhov chaw tshem tawm cov txiaj ntsig zoo, thiab muaj qee qhov kev ntsuas kom zoo, thiab qee qhov kev ntsuas tshem tawm.
(4) Kev sib xyaw oxidation ditch
Nws yog hom sib koom tes, thiab cov tedimitation tank tank yog ua nyob rau hauv oxidation ditch. Nws tsis yog tsuas yog txuas ntxiv txuas ntxiv thiab qhov hluav taws xob ntawm cov dej, thiab tsis tas yuav hloov cov teeb meem, tab sis qee qhov kev paub tseeb, yog li nws siv.
6. Kev faib tawm tseem ceeb thiab cov yam ntxwv ntawm SBR txheej txheem
Muaj ntau hom kev ua tiav ntawm cov txheej txheem SBR:
(1) Kev coj ua si
Tag nrho nws cov haujlwm yog sib quas ntus thiab kev nyiam tshaj plaws. Nws denitricification thiab phosphorus tshem tawm cov nyhuv tsis ruaj khov, xws li qhov yuav tsum tau tshem tawm thiab phosphorus tshem tawm, qee qhov kev txhim kho yuav tsum tau ua.
(2) Cov txheej txheem Icas
Ntawd yog, cov kev sib tw sib qig qeeb oolerated sludge ua kom muaj ob ntu, thiab sab nraub qaum yog cov khoom siv tawm mus ua ntej, thiab cov khoom noj ua ntej, thiab tom qab ntawd yog cov khoom noj ua ntej Nws tuaj yeem tshem tawm cov nitrogen thiab phosphorus, tab sis cov nyhuv tsis zoo tagnrho.
(3) cov txheej txheem dat-hiat
Ntawd yog, cov txheej txheem ntawm kev sib txuas ua ke Aeration thiab sib txawv ntawm lub tsev pheeb suab, uas tau muab faib ua ob sab nrog cov tshuaj tiv thaiv hauv qab ntawm Tianjin chaw tsim khoom. Nws denitricification thiab phosphorus tshem tawm tshem tawm yog qhov nruab nrab, thiab cov chaw ntxiv yuav tsum tau txhim kho kev ua haujlwm ntawm nitrogen thiab phosphorus tshem tawm.
(4) cov txheej txheem nrum
Ntawd yog, cov txheej txheem kev ua kom zoo nkauj, nws cov tshuaj tiv thaiv, thiab tso dej tawm, thiab cov haujlwm tsis tu ncua. Nws muaj cov nitrogen thiab phosphorus tshem tawm cov nyhuv thiab kev ua tau zoo los tiv thaiv sludge nthuav dav.
(5) Cov txheej txheem Auelank
Nws yog peb daim pas dej ib sab, uas ua haujlwm raws li cov dej ntws tawm zoo ib yam li cov dej ntws, thiab cov dej ntws rov qab zoo ib yam li cov dej ntws
7. Kev sib piv ntawm oxidation ditch thiab sbr cov txheej txheem
Cov txheej txheem oxidation thiab cov txheej txheem sbr kev muaj ntau yam ntxwv hauv ib qho, nrog rau lawv tus cwj pwm thiab kev siv, uas yuav tsum tau ua tib zoo saib xyuas thaum xaiv kev daws teeb meem.
(1) los ntawm qhov kev pom ntawm cov peev txheej kev nqis peev
Feem ntau, tus nqi siv tau yog qhov qis dua cov Oxidation Ditch, thiab cov khoom siv oxidation yog siab dua li ntawm Oxidation Ditch, thiab tag nrho cov nqi yog nyob ntawm qhov xwm txheej tshwj xeeb.
a. Tus nqi av siab tsis zoo rau oxidation ditch. b. Lub cev loj ntawm cov dej tsis zoo thiab cov kev sib piv ntawm cov tshuaj tiv thaiv ntim tau los nag lossis oxidation ditch; Qhov qis dua ntawm lub cev thiab qhov tsis tshua muaj kev sib txawv ntawm cov khoom siv los nag tsis muaj txiaj ntsig zoo rau SBR.
(2) los ntawm qhov kev pom ntawm kev siv nyiaj
Cov txheej txheem SBR yog feem ntau yog ib feem ntau yog ua kom huab cua, thiab cov oxidation ditch cov txheej txheem feem ntau yog ib feem ntau aerated tshuab. Feem ntau hais lus, nyob rau hauv tib cov pa oxygen, Blast Aeration yog lub zog ntau dua li kev siv tshuab hluav taws xob; Hauv qhov thib ob, cov txheej txheem SBR yog cov txheej txheem tsim kev tsim kho, tsis muaj qhov sib txawv ntawm cov txheej txheem tsim nyog nrog cov khoom siv sib txawv, thiab siv hluav taws xob ntau; Thib peb, cov qib caj pas yog cov khoom lag luam dej nce qib, uas nce lub taub hau ntawm lub taub dej nqa dej nres tsheb. Txhua yam suav hais tias, kev siv hluav taws xob ntawm Oxidation cov txheej txheem feem ntau yog qhov loj dua li ntawm cov txheej txheem SBR, thiab tus nqi ua haujlwm siab dua.
(3) los ntawm qhov kev pom ntawm kev ua haujlwm sib txawv
Cov txheej txheem oxidation yog kev ua haujlwm txuas ntxiv thiab tsis siv tsis siv neeg, tab sis tsuas yog siv tsis siv neeg tswj thaum lub zog txuag tau; Cov txheej txheem SBR yog sib quas ntus thaum lub voj voog, thiab cov txheej txheem ntau yam tau hloov pauv thiab yuav tsum tau tswj hwm tau.
(4) los ntawm qhov pom kev ntawm sedimentation sib txawv
Cov txheej txheem SBR yog qhov xwm txheej zoo li qub, thiab cov oxidation txheej txheem yog siv zog ntawm SBR yog siab dua thiab lub effluent zoo yog qhov zoo dua.