Qhov tseem ceeb sib txawv ntawm cov thawj thiab thib ob Sedimentation Tanks
Qhov chaw nyob hauv Txoj Kev Kho Mob
Thawj Sedimentation Tank
Nyob tom qab lub chamber grit thiab ua ntej lub aeration tank, lub hauv paus sedimentation tank tshem tawm cov khib nyiab thaum ntxov hauv cov txheej txheem kho. Nws tuaj yeem ua tiav90% tshem tawm cov khib nyiab, txo cov load ntawm downstream biological kev kho mob.
Secondary Sedimentation Tank
Muab tso rau tom qab kev kho mob lom (xws li lub tank aeration), lub tank thib ob cais cov sludge los ntawm cov dej kho thiab tso cai rau cov sludge rov ua dua. Nws yog ib qho tseem ceeb ntawm kev kho kab mob lom.
Lub Hom Phiaj Kho Mob
Thawj Sedimentation Tank
Tshem tawm cov khib nyiab (SS)
Txo ib feem ntawm cov organic load (tsuas yog raug tshem tawm BOD₅)
Txhim kho tej yam kev mob rau kev kho mob lom
Secondary Sedimentation Tank
Separates activated sludge los ntawm cov cawv sib xyaw
Kov sludge nrog:
Siab concentration
Flocculent qauv
Tsawg ceev
Yooj yim daws qhov nrawm
Hom Tsim Parameters
Thawj Sedimentation Tank
Qhov chaw thau khoom: 1.5-3.0 m³ / m²·h
Ceev ceev: 1.5-3.0 m / h
Lub sijhawm khaws cia: 1.0-2.0 h
Weir loading: Tsawg dua lossis sib npaug li 2.9 L / s·m
Cov dej noo: 95% -97%
Secondary Sedimentation Tank (Activated Sludge)
Qhov chaw thau khoom: 1.0-1.5 m³ / m²·h
Ceev ceev: 1.0-1.5 m / h
Lub sijhawm khaws cia: 1.5-2.5 h
Weir loading: Tsawg dua lossis sib npaug li 1.7 L / s·m
Cov dej noo: 99.2% - 99.6%
Secondary Sedimentation Tank (Biofilm Process)
Qhov chaw thau khoom: 1.0-1.5 m³ / m²·h
Lub sijhawm khaws cia: 1.5-4.0 h
Cov dej noo: 96% -98%
Weir loading: Tsawg dua lossis sib npaug li 1.7 L / s·m
Kev ua haujlwm thiab kev saib xyuas zoo tshaj plaws
Thawj Sedimentation Tank
Txhim kho sludge scraping cycles kom tsis txhob sludge flotation los yog cuam tshuam
Xav kom tsis tu ncua sludge tawm; saib xyuas kom zoo yog tias siv tas li tso tawm
Xyuas kom cov effluent faib thiab ntxuav cov weirs tsis tu ncua
Ua kom zoo scum tshem tawm qhov system sib dhos
Tshawb xyuas cov khoom siv rau lub suab nrov, corrosion, thiab mechanical teeb meem
Flush sludge pipelines txhua hli kom tsis txhob txhaws
Ua kev tu txhua xyoo thiab tshuaj xyuas tag nrho
Saib xyuas qhov tseem ceeb: SS, COD, BOD₅, pH, kub
Secondary Sedimentation Tank
Xyuas kom meej txawm tias muaj kev faib tawm thoob plaws lub tank
Tsis tu ncua tshem tawm scum thiab yaug scum hoppers
Tuav cov kav dej theem kom tiv thaiv luv luv -circuiting
Saib xyuas sludge pam qhov siab thiab effluent clarity
Tshawb xyuas kev ua haujlwm ntawm scraper, kev vibration, thiab kev ua haujlwm ntawm lub cev muaj zog
Ua txhua xyoo kev tshuaj xyuas lub tank, tshwj xeeb tshaj yog rau cov khoom hauv dej
Ceev faj thaum muab cov tank tso rau hauv cov dej hauv av siab
Txheeb xyuas cov tshuab tswj tsis siv neeg (piv txwv li, qib sludge-raws li paug)
Tej teeb meem thiab kev daws teeb meem
Thawj Sedimentation Tank
Fine Suspended Solids hauv Effluent
Ua rau
Hydraulic shock load los yog overload
Sludge disintegration vim dhau - aeration
Poorly settling hais
Kev daws teeb meem
Txhim kho cov dej sib npaug
Optimize inlet / qhov hluav taws xob faib
Kho qhov ntsuas aeration
Ntxiv flocculants yog tias tsim nyog
Sludge Floating
Ua rau
Septic influent
Denitrification los ntawm nitrate - nplua nuj sludge
Kev cuam tshuam los ntawm kev kho sludge rov qab ntws
Kev daws teeb meem
Kho qhov ntsuas hydraulic
Txhim khu kev tshem tawm scum
Tswj sludge hnub nyoog thiab nitrification
Sludge Ntxuav
Ua rau
Uneven weir loading
Scraper malfunction
Cua cuam tshuam (rau qhib tso tsheb hlau luam)
Kev daws teeb meem
Kho cov theem weir
Kho khoom siv
Secondary Sedimentation Tank
Tsawg Dissolved Oxygen hauv Effluent
Ua rau
Tshaj sludge tuav
Cov cuab yeej ua haujlwm tsis zoo
Kub kub
Kev daws teeb meem
Nce sludge rov qab tus nqi
Kho scrapers
Txhim kho qhov kub thiab txias
Siab BOD₅ thiab COD hauv Effluent
Ua rau
Kev poob siab
Tsis zoo aeration tswj
Kev daws teeb meem
Txhim khu kev soj ntsuam
Optimize aeration tank ua haujlwm
Sludge Floating
Ua rau
Anaerobic tej yam kev mob (gas ntau lawm xws li H₂S)
Denitrification ua cov roj nitrogen
Kev daws teeb meem
Nce sludge tawm
Txhim kho aeration ntawm lub qhov hluav taws xob tank
Tswj sludge tuav lub sij hawm (SRT)
Primary thiab secondary sedimentation tanks pabtxawv tab sis complementary luag hauj lwm:
Thawj cov tanktsom rau kev tshem tawm cov khib nyiab thiab txo cov load
Secondary tanksxyuas kom meej sludge sib cais thiab rov ua dua
Tsim kom raug, kev ua haujlwm, thiab kev daws teeb meem ntawm ob lub tshuab yog qhov tseem ceeb rau kev tswj xyuas cov dej khib nyiab ruaj khov.
