Case Study ntawm MBBR + ACCA Txheej Txheem rau Kev Txhim Kho thiab Kev Txhim Kho ntawm Lub Nroog Kev Kho Dej Kho Dej
Tawm tsam keeb kwm ntawm Tuam Tshoj txoj kev lag luam booming, lub pace ntawm industrialization thiab urbanization tau nrawm heev. Cov txheej txheem no yog inevitably nrog ib xyoos - ntawm - xyoo nce hauv kev tso dej pov tseg thiab cov dej phwj tuaj hauv tsev, ua rau muaj teeb meem dej paug ntau ntxiv thiab cuam tshuam rau kev tsim kho vaj tsev nyob hauv Suav teb. Nrog rau kev ua tiav ntawm Txoj Kev Tiv Thaiv Kev Tiv Thaiv Dej thiab Tswj Kev Ua Haujlwm, kev txwv kev tso tawm nruj dua tau raug txwv rau cov chaw kho dej khib nyiab hauv nroog thoob plaws tebchaws. Cov qauv hauv zos hauv qee lub nroog tau mus txog quasi-Class IV dej zoo, thiab rau cov dej ntws tawm mus rau hauv cov dej rhiab heev, qee cov cim qhia tau maj mam nce mus txog Qib III tus qauv rau cov dej saum npoo av. Txawm li cas los xij, cov pa phem uas nyob hauv nroog cov dej khib nyiab tom qab kev kho mob lom yog feem ntau tsis yog - cov organic tebchaw uas tsis zoo biodegradability. Kev cia siab ib leeg rau ib txwm siv thev naus laus zis txhim kho lom neeg tau dhau los ua tsis txaus kom ua tau raws li cov qauv emission nruj zuj zus.
Activated coke muaj ib qho kev tsim kho mesoporous uas muaj peev xwm adsorbing macromolecular pollutants hauv dej. Nrog rau cov neeg kho tshuab muaj zog, ruaj khov, zoo adsorption kev ua tau zoo, thiab tus nqi pheej yig, nws tau siv dav hauv kev kho cov dej khib nyiab uas nyuaj rau biodegrade. Nyob rau hauv xyoo tas los no, kev siv thev naus laus zis siv tshuab ua kom coke ua qhov nruab nrab kuj tau pom qee yam kev siv hauv kev kho siab heev ntawm cov nroj tsuag dej khib nyiab hauv nroog, ua tiav cov txiaj ntsig zoo hauv qhov kawg tshem tawm cov pa phem. Ua ke ib qho piv txwv engineering los ntawm qhov kev txhim kho ntawm qhov chaw kho dej khib nyiab hauv Henan Xeev, tus sau tau txais cov txheej txheem MBBR + ACCA (Activated Coke Circulating Adsorption) los txhim kho kev kho cov dej khib nyiab hauv nroog. COD effluent COD, NH₃-N, thiab TP ntsuas tau ua tau raws li GB 3838-2002 Class III tus qauv dej, muab cov ntaub ntawv siv rau kev kho dua tshiab ntawm lwm cov chaw kho dej khib nyiab.
1. Qhov xwm txheej tseem ceeb ntawm Lub Chaw Kho Dej Kho Dej
Lub peev xwm tsim tag nrho ntawm qhov chaw kho dej khib nyiab no yog 50,000 m³ / d, suav nrog Phase I tsim peev txheej ntawm 18,000 m³ / d thiab Phase II tsim peev txheej ntawm 32,000 m³ / d. Nws feem ntau kho cov dej phwj hauv nroog thiab ib qho me me ntawm cov dej khib nyiab. Kev hloov kho tshiab tau ua tiav hauv xyoo 2012, nrog rau cov dej ntws tawm raws li Qib 1A tus qauv ntawm Cov Txheej Txheem Tshaj Tawm ntawm Cov Khoom Siv Hluav Taws Xob rau Kev Kho Dej Hauv Nroog GB 18918-2002. Cov txheej txheem tseem ceeb yog ntau-theem AO + denitrification lim + high-density sedimentation tank. Cov txheej txheem ntws tau qhia hauvDaim duab 1.
Tam sim no, cov chaw kho dej khib nyiab tau ua haujlwm ze rau tag nrho cov peev txheej. Raws li cov ntaub ntawv ua haujlwm tam sim no, nyob rau hauv kev saib xyuas cov nroj tsuag zoo, cov dej ntws zoo tuaj yeem khaws cia ruaj khov ntawm GB 18918-2002 Qib 1A tus qauv. Cov effluent concentrations rau COD, BOD₅, NH₃-N, TN, thiab TP ntau ntawm 21.77-42.34 mg/L, 1.82-4.15 mg/L, 0.13-1.67 mg/L, 8.86-15.74 mg/L, thiab 0.20.
Ua ntej kev txhim kho, cov nroj tsuag tau ntsib cov teeb meem hauv qab no: 1) Kev laus thiab kev puas tsuaj cov ntxaij vab tshaus nyob rau hauv qhov pretreatment seem tso cai rau qee cov khib nyiab ntab rau hauv cov tso tsheb hlau luam, yooj yim clogging twj thiab cuam tshuam rau kev kho mob tom ntej; 2) Kev tshem tawm TN tsis ruaj khov thaum lub caij ntuj no txias thiab qhov kev hloov pauv tseem ceeb hauv cov dej zoo thiab kom muaj nuj nqis; 3) Lub tank ntim tsis txaus nyob rau theem I roj tso tsheb hlau luam thiab tsis tsim nyog anoxic zone partitioning, ua rau tsis zoo TN tshem tawm kev ua haujlwm thiab kev siv tshuaj ntau ntxiv rau cov pa roj carbon ntau ntxiv; 4) Tus thawj aeration system siv outdated tsoos centrifugal blowers nrog siab zog noj; 5) Kev txhaws hnyav ntawm cov khoom lim tawm hauv cov lim dej denitrification, tsis ua tiav rov qab, thiab nyuaj rau kev ua haujlwm ruaj khov; 6) Feem ntau ua tsis tiav ntawm kev sib xyaw thiab nplawm cov cuab yeej hauv qhov siab - ntom ntom ntim tso tsheb hlau luam; 7) Kev ua tsis tiav ntawm ob txoj siv lim uas twb muaj lawm rau sludge dewatering, siab noo noo cov ntsiab lus ntawm dewatered sludge, loj sludge ntim, thiab siab sludge pov tseg nqi; 8) Tsis muaj ntxhiab tsw tswj chaw rau kev kho mob ua ntej thiab sludge kho tshuab; 9) Obsolete central tswj system nrog txwv cov ntaub ntawv cia muaj peev xwm thiab poob ntawm feem ntau tej thaj chaw deb kev khiav hauj lwm functions.
2. Tsim Dej Zoo
Xav txog ntau xyoo ntawm kev ua haujlwm dej zoo cov ntaub ntawv los ntawm cov nroj tsuag, nrog rau 90% kev ntseeg siab thiab suav nrog qee cov paj, qhov tsim muaj txiaj ntsig zoo tau txiav txim siab. Raws li cov dej tau txais lub cev qhov kev xav tau ntawm ib puag ncig zoo, qhov hloov kho cov dej ntws tawm COD, BOD₅, NH₃-N, thiab TP yuav tsum ua tau raws li GB 3838-2002 Class III dej tus qauv, thaum TN thiab SS yuav ua raws li tus qauv qub. Cov qauv tsim muaj txiaj ntsig zoo thiab cov txiaj ntsig zoo tau qhia hauvTable 1.
3. Txhim kho lub tswv yim thiab txheej txheem ntws
3.1 Txhim kho lub tswv yim
Raws li kev tsim cov dej ntws zoo, qhov kev hloov kho tshiab no tau teeb tsa ntau dua rau COD, BOD₅, NH₃-N, thiab TP. Xav txog cov txheej txheem ntawm cov nroj tsuag tam sim no, cov yam ntxwv ntawm cov dej zoo, thiab cov teeb meem uas twb muaj lawm, lub hom phiaj yog txhawm rau txhim kho kev tshem tawm COD, NH₃-N, thiab TP thaum ua kom ruaj khov TN tshem tawm. Tsis tas li ntawd, txwv tsis pub muaj qhov chaw nyob hauv cov nroj tsuag uas twb muaj lawm yuav tsum tau siv tag nrho cov peev txheej ntawm cov qauv uas twb muaj lawm los ntawm kev siv cov khoom siv tshiab, kev siv zog, thiab kev kho dua tshiab, txhawm rau tshem tawm COD, NH₃-N, TN, thiab TP. Yog li ntawd, siv cov thawj multi-theem AO tso tsheb hlau luam thiab ntxiv cov cab kuj raug tshem tawm los ua ib qho hybrid biofilm-activated sludge MBBR txheej txheem tuaj yeem txhim kho kev kho mob ruaj khov thiab kev poob siab. Lub hnub nyoog sludge ntev ntawm biofilm ntawm cov nqa khoom yog tsim rau kev loj hlob nitrifier thiab tswj cov nitrifier siab, ua kom muaj peev xwm ua kom muaj peev xwm nitrification. Cov biofilm ntom ntom hauv cov cab kuj muaj lub hnub nyoog sludge ntev, hosting cov neeg coob ntawm cov kab mob nitrifying thiab denitrifying, ua kom muaj nitrification ib txhij -denitrification (SND) thiab yog li ntxiv dag zog rau TN tshem tawm. Li no, cov txheej txheem MBBR yog qhov zoo- haum rau cov nroj tsuag no hloov kho.
Raws li kev paub txog kev txhim kho zoo sib xws, txhawm rau ua kom muaj kev ruaj ntseg rau COD thiab TP, cov chaw kho mob tiv thaiv ntxiv tseem yuav tsum tau nyob rau sab saum toj ntawm cov txheej txheem uas twb muaj lawm ua ke nrog MBBR. Activated coke, raws li cov khoom ntxeem tau, nthuav tawm qhov tseem ceeb ntawm adsorption kev ua tau zoo piv rau cov pa roj carbon activated, tshem tawm COD, SS, TP, xim, thiab lwm yam. Tsis tas li ntawd, coke ua kom muaj roj ntsha tuaj yeem siv cov kab mob sib txuas kom degrade cov organic teeb meem, ua kom rov tsim dua cov chaw adsorption thaum adsorbing pollutants. Qhov dynamic equilibrium mechanism no tso cai rau kev ua haujlwm ruaj khov thiab ruaj khov. Cov txheej txheem Activated Coke Circulating Adsorption (ACCA) siv cov tshuab ua kom coke ua qhov nruab nrab, sib xyaw ua ke pom thiab adsorption. Nws ntiav cov cua compressed nqa thiab ntxuav cov lim xov xwm. Los ntawm kev thim rov qab- ntws zoning thiab cov qauv ntws sib xws, nws ua kom muaj kev sib cuag tag nrho ntawm cov tshuab ua kom coke thiab cov dej khib nyiab, ua tiav kev txhim kho dej zoo tshaj plaws thiab lav kev ruaj ntseg effluent.
Rau cov nroj tsuag kev laus thiab cov khoom siv tsis raug, lawv yuav raug hloov nrog kev siv thev naus laus zis, lub zog - cov cuab yeej siv tau los txo cov nqi ua haujlwm. Tshwj xeeb, cov ntxaij vab tshaus pretreatment yuav raug hloov nrog cov ntxaij vab tshaus zoo los cuam tshuam cov plaub hau thiab fibers, tiv thaiv kev txhaws ntawm MBBR cov ntxaij vab tshaus khaws cia.
3.2 Txheej txheem Flow
Cov txheej txheem kho dua tshiab ntws tau qhia hauvDaim duab 2. Txhawm rau ua kom tau raws li lub taub hau, lub tshuab nqa nqa tshiab tau ntxiv. Ib qho tshiab tsim V- hom lim ua haujlwm ua ntej ua ntej rau kev ua haujlwm tom qab coke adsorption, ua kom ACCA system stability. Cov dej nyoos dhau los ntawm cov ntxaij vab tshaus thiab grit chambers kom tshem tawm cov floatables, plaub hau, thiab particulates ua ntej nkag mus rau hauv hybrid MBBR cov tso tsheb hlau luam rau kev tshem tawm nitrogen zoo dua. Cov dej cawv sib xyaw ces nkag mus rau hauv cov ntsiab lus clarifiers rau cov khoom sib cais. Lub supernatant yog nqa los ntawm qhov chaw nres tsheb tshiab rau hauv cov lim dej denitrification thiab siab -cov roj av nkos. Cov effluent ces lifted los ntawm lub twj tso kua mis tshiab rau hauv V- hom lim thiab ob-theem activated coke adsorption tso tsheb hlau luam rau kev kho mob siab, ntxiv tshem tawm COD, TP, SS, xim, thiab lwm yam. Qhov kawg effluent yog tshuaj tua kab mob ua ntej tso tawm.
4. Tsim Parameters ntawm Cov Kev Kho Mob Loj
4.1 Biological Tank
Phase I uas twb muaj lawm tso tsheb hlau luam tau muab faib ua ob pawg nrog cov ntim me me tab sis cov qauv suab. Yog li ntawd, rau qhov kev txhim kho no, thaum ua tau raws li lub taub hau, cov phab ntsa tank tau tsa los ntawm 0.5 m. Tom qab kev kho dua tshiab, tag nrho cov ntim tau zoo yog 10,800 m³, nrog rau tag nrho HRT ntawm 14.4 h thiab thaj tsam anoxic HRT ntawm 6.4 h, ua rau lub sijhawm anoxic tuav kom txhim kho TN tshem tawm. Phase II cov tso tsheb hlau luam uas twb muaj lawm muaj qhov ntim tau zoo ntawm 19,600 m³, tag nrho HRT ntawm 14.7 h, thiab thaj chaw anoxic HRT ntawm 6.8 h. Txoj haujlwm no koom nrog kev hloov cov tshuab aeration thiab qee qhov kev laus submersible mixers hauv Phase I thiab II cov tso tsheb hlau luam lom neeg, thiab ntxiv cov nqa nqa thiab cov ntxaij vab tshaus tuav. Cov cab kuj yog ua los ntawm polyurethane los yog lwm yam siab -cov ntaub ntawv kev ua tau zoo, nrog rau lub cubic specification ntawm 24 mm, ib tug tshwj xeeb nto ntawm 4,000 m² / m³, thiab ib tug filling ratio ntawm 20%. Kev kho kab mob lom AOR yog 853.92 kg O₂ / h, nrog rau huab cua ntawm 310.36 Nm³ / min.
4.2 Lift Pump Chaw Nres Tsheb thiab Lub Tank Dej pov tseg
Lub chaw nres tsheb nqa lub tshuab nqa tshiab tau tsim los txhawm rau tso cov dej tawm los ntawm qhov siab -cov dej ntws tawm mus rau V- hom lim rau kev kho mob ntxiv. Lub tank dej khib nyiab khaws cov dej khib nyiab rov qab los ntawm cov lim dej. Cov twj me me yog siv los sib npaug ntawm cov dej khib nyiab rov qab rau hauv Phase II cov tso tsheb hlau luam kom tsis txhob poob siab. Peb lub tshuab nqa nruab nrab tau teeb tsa (2 lub luag haujlwm + 1 standby, Q=1,300 m³ / h, H=12 m, N=75 kW), nrog kev hloov pauv zaus tsav (VFD) tswj. Cov dej khib nyiab rov qab tau nruab nrog 2 lub twj tso kua mis hloov pauv (1 lub luag haujlwm + 1 standby, Q=140 m³ / h, H=7 m, N=5.5 kW) thiab ib qho submersible tov (N{18}} kW) los tiv thaiv sedimentation.
4.3 V-Tom Filter
Ib qho tshiab V- hom lim tau tsim nrog qhov ntev ntawm 36.9 m (L) × 29.7 m (W) × 8.0 m (H). Nws siv homogeneous quartz xuab zeb lim tawm. Cov lim tau muab faib ua 6 lub hlwb teem rau hauv ob kab. Txhua lub xov tooj ntawm lub qhov hluav taws xob cov yeeb nkab muaj hluav taws xob tswj lub valve los tswj cov dej ua haujlwm tas li. Cov txheej txheem rov qab tuaj yeem tswj hwm los ntawm PLC. Tus qauv pom tus nqi yog 7.0 m / h, qhov yuam kev pom yog 8.4 m / h, thiab ib qho - ntawm tes pom cheeb tsam yog 49.4 m². Kev siv dej rov qab yog 11 m³ / (m²·h), kev siv dej rov qab yog 55 m³ / (m²·h), thiab kev siv lub ntsej muag yog 7 m³ / (m²·h). Lub sijhawm rov qab ntxuav yog 10 feeb. Lub voj voog rov qab yog 24 teev (kho tau), ntxuav ib lub xov tooj ntawm ib zaug. Quartz xuab zeb media loj yog 1-1.6 hli nrog k₈₀ <1.3. Cam khwb cia- nyob rau hauv qhov chaw monolithic lim phaj yog siv.
4.4 Qhib Coke Adsorption Tanks
Ib qho tshiab activated coke adsorption tank tau tsim nrog cov qauv qhov ntev ntawm 49.5 m (L) × 30.15 m (W) × 11.0 m (H). Nws siv ob- theem pom kev teeb tsa nrog tag nrho 36 lub hlwb, 18 lub hlwb ib theem. Qhov siab tshaj plaws pom tus nqi yog 6.02 m³ / (m²·h), nrog rau qhov nruab nrab ntawm 4.63 m³ / (m²·h). Thawj-theem ib leeg- qhov ntev ntawm tes yog L × W × H=5.0 m × 5.0 m × 11.0 m, nrog lub sij hawm sib cuag lub txaj (EBCT) ntawm 1.4 h. Thib ob-theem ib zaug-cell qhov ntev yog L × W × H=5.0 m × 5.0 m × 9.5 m, nrog EBCT ntawm 1.08 h. Lub kaw lus siv 2,000 tons ntawm activated coke nrog particle loj 2-8 mm, nruab nrog mobile coke washers, dej distributors, inlet / qhov hluav taws xob weirs, thiab lwm yam.
4.5 Qhib Coke Lub Tsev
Lub tsev tshiab qhib coke tau tsim los rau khaws cia cov activated coke thiab muab tso rau hauv lub tank adsorption. Qhov loj me yog 33.5 m (L) × 13.0 m (W) × 6.5 m (H). Cov khoom siv tseem ceeb suav nrog: 1 lub tshuab ua haujlwm coke dewatering vibrating npo, 3 coke pub twj tso kua mis (2 lub luag haujlwm + 1 standby, Q=40 m³/h, H=25 m, N=7.5 kW), 2 lim dej tso tawm twj tso kua mis (1 lub luag haujlwm + 1}5} standby, H³ / h 33.5 m³, N=18.5 kW), 2 cua compressors (1 lub luag haujlwm + 1 standby, Q=7.1 m³/min, N=37 kW), thiab lub tank cua txais (V=2 m³, P=0.8 MPa).
4.6 Phaj-thiab-Frame Dewatering Room
Lub phaj tshiab-thiab-chaw dewatering ncej tau ua ib sab ntawm chav dej sludge uas twb muaj lawm. Vim muaj kev txwv qhov chaw, ib txheej ntawm phaj- thiab- ncej lim xovxwm ( lim cheeb tsam 300 m² ) tau teeb tsa, ua ib qho thaub qab rau siv lim xovxwm. Cov khoom siv ntxiv muaj xws li ib lub tank txias (qhov ntim tau zoo 80 m³). sludge kom muaj nuj nqis yog 6,150 kg DS / d, nrog thickened pub sludge noo noo ntsiab lus ntawm 97% thiab dewatered ncuav mog qab zib noo noo ntsiab lus ntawm 60%. Cov khoom siv tseem ceeb suav nrog: 2 lub twj tso kua mis (1 lub luag haujlwm + 1 standby, Q=60 m³/h, H=120 m, N=7.5 kW), 2 lub twj tso kua mis dej (1 lub luag haujlwm + 1 standby, Q=12 m³ / h, H=187 5 m, N) (Q=20 m³/h, H=70 m, N=7.5 kW), 2 dosing twj tso kua mis (1 lub luag haujlwm + 1 standby, Q=4 m³/h, H=60 m, N=3 kW), 1 cua compressor (Q{=3.45 m³), receiver tank (V=5 m³, P=1.0 MPa), thiab 1 set ntawm PAM npaj chav tsev (Q=2 m³/h, N=1.5 kW).
4.7 Kev tswj qhov tsis hnov tsw
Ib qho tshiab biofiltration odor tswj system tau ntxiv nrog tus qauv tsim huab cua ntws ntawm 12,000 m³ / h. Cov iav reinforced yas (GRP) cov kav dej yog siv los sau thiab kho cov ntxhiab los ntawm cov txheej txheem pretreatment thiab sludge. Stainless hlau thav duab thiab PC endurance boards yog siv los kaw cov cuab yeej ua ntej.
4.8 Lwm Qhov Chaw Kho Tshiab
- Hloov nrog 2 sab hauv pub zoo cov ntxaij vab tshaus nrog 5 hli aperture, nrog cov ntsia hlau conveyors thiab ntxuav lub tank, V=10 m³ thiab 2 lub twj tso kua dej (1 lub luag haujlwm + 1 standby, Q=25 m³ / h, H=70 m, N=11 kW).
- Hloov nrog 4 lub tshuab hluav taws xob zoo dua, VFD tswj tau (3 lub luag haujlwm + 1 standby, Q=130 m³ / min, P=63 kPa, N=150 kW).
- Hloov cov lim tawm hauv cov lim dej uas twb muaj lawm denitrification nrog 1,800 m³ ntawm ceramic media (particle loj 3-5 mm).
- Hloov 2 sib tov agitators nyob rau hauv lub siab - ceev sedimentation tso tsheb hlau luam (ceev 60-80 rpm, N=5.5 kW), 4 flocculation agitators (ceev 10-20 rpm, N{6}} kW), thiab lub raj settlers (260 m²).
- Hloov txoj siv lim xovxwm nrog 2 m dav txoj siv sia nrog cua compressor, 1 teeb.
- Siv lub hauv paus tswj chav tsev, cov cuab yeej kho tshiab, cov cuab yeej, thiab tsim kev tswj hwm hauv nruab nrab, tsim kom muaj kev cog lus -cov ntaub ntawv kev sib txuas lus thoob plaws kom ua tiav cov ntaub ntawv kev sib txuas lus ntawm chav tswj nruab nrab thiab cov chaw nres tsheb, nrog rau kev tswj cov txheej txheem ntau lawm.
5. Kev Ua Haujlwm Kev Ua Haujlwm thiab Kev Ua Haujlwm - Cov Ntsuas Kev Lag Luam
5.1 Kev ua haujlwm zoo
Tom qab ua tiav qhov kev txhim kho no, txhua chav kho mob tau ua haujlwm ruaj khov. Cov ntaub ntawv saib xyuas dej zoo thiab muaj txiaj ntsig zoo rau xyoo 2023 tau qhia hauvRooj 2.
Raws li pom, qhov nruab nrab effluent concentrations rau COD, NH₃-N, TN, TP, thiab SS yog 11.2, 0.18, 8.47, 0.15, thiab 2.63 mg / L, nrog rau qhov nruab nrab tshem tawm ntawm 95.16%, 99.45%, 8.97%, 99.45%, raws. Cov kua dej COD, NH₃-N, thiab TP tsis tu ncua ua tau raws li GB 3838-2002 Class III dej tus qauv.
Txoj haujlwm kho dua tshiab tau ua haujlwm tau ze li ob xyoos. Cov txiaj ntsig tau qhia tias cov txheej txheem MBBR + ACCA ruaj khov, ua haujlwm tau zoo, thiab ua rau siab - cov dej ntws tawm zoo, ua rau pom muaj zog tiv thaiv kev poob siab thiab qis - qhov kub thiab txias. Txawm hais tias qhov kub ntawm lub caij ntuj no tsawg kawg yog 9.4℃thiab qhov hloov pauv ntawm cov dej tseem ceeb, cov dej ntws zoo tseem nyob ruaj khov thiab ua tau raws li cov qauv kev tso tawm. Ua ntej thiab tom qab kev txhim kho, cov pa roj carbon ntau npaum li cas tsis tau nce, tsis tau TN tshem tawm tau txhim kho. Qhov no yog vim hais tias, ntawm ib sab, nitrifying microorganisms txuas nrog MBBR cov cab kuj loj hlob thiab sib sau ua ke nyob rau hauv ib qho chaw ruaj khov aerobic, ua rau kom tiav nitrification. Ntawm qhov tod tes, nitrate tau raug tshem tawm ntxiv hauv MBBR cov tso tsheb hlau luam hloov kho thiab cov tso tsheb hlau luam anoxic. Qhov kawg ACCA system ua raws li kev tiv thaiv, ntxiv adsorbing thiab tshem tawm recalcitrant COD, TP, SS, thiab lwm yam., ua rau cov dej ntws zoo ruaj khov. Tsis tas li ntawd, tom qab ua tiav qhov project, cov nroj tsuag tuaj yeem tsim cov dej siab zoo - rov qab zoo, tso lub hauv paus rau kev siv dej rov qab rau yav tom ntej.
5.2 Technical-Kev ntsuas kev lag luam
Tag nrho cov peev nyiaj rau txoj haujlwm no yog 86,937,600 RMB, suav nrog cov nqi tsim kho thiab kev teeb tsa ntawm 74,438,500 RMB, lwm yam nuj nqis ntawm 7,593,500 RMB, tus nqi them rau 4,101,600 RMB, thiab pib ua haujlwm peev ntawm 804,000 RMB. Tom qab kev ua haujlwm ruaj khov, tus nqi hluav taws xob ntxiv rau tag nrho cov nroj tsuag yog 0.11 RMB / m³, tus nqi siv hluav taws xob yog 0.39 RMB / m³, ua rau tag nrho cov nqi khiav lag luam ntawm kwv yees li 0.50 RMB / m³.
6. Cov lus xaus
- Qhov project no tau siv cov cuab yeej siv tshiab, kev siv zog, thiab kev kho dua tshiab ntawm cov chaw kho dej khib nyiab uas twb muaj lawm, thiab ntxiv kev kho mob siab heev, txhim kho kev tshem tawm cov txiaj ntsig rau COD, NH₃-N, TN, thiab TP.
- Tom qab kev txhim kho, siv lub ntsiab "MBBR + ACCA" txheej txheem, cov dej ntws COD, NH₃-N, thiab TP ruaj khov kho los ntawm Qib 1A mus rau cov dej saum npoo Class III tus qauv, thiab TN tshem tawm tau zoo dua qub.
- Kev xyaum qhia tau hais tias cov txheej txheem no ua haujlwm ruaj khov thiab ua haujlwm tau zoo, tiv taus kev thauj khoom poob siab, ua kom muaj -cov dej ntws zoo, thiab ntxiv cov nqi khiav haujlwm ntawm kwv yees li 0.50 RMB / m³. Nws tuaj yeem ua tus siv rau kev txhim kho cov haujlwm thiab cov dej num rov siv dua ntawm lwm cov chaw kho dej khib nyiab.