Ua ntej
Qhov sib txawv ntawm lub siab - qhov ceev sedimentation tank thiab ib lub tank zoo tib yam yog nyob rau hauv cov txheej txheem "sludge recirculation" thiab "sludge thickening". It is precisely these two points that make the high-density sedimentation tank have higher surface load and higher removal efficiency.
There are significant differences between high-density sedimentation tanks and coagulation sedimentation tanks in terms of surface load and removal efficiency. Cov hauv qab no yog cov ncauj lus kom ntxaws sib piv ntawm ob:
I. Nto load
High -ntaus sedimentation tank
High deg load: High -density sedimentation tank ho txhim kho qhov chaw thauj khoom los ntawm sludge ncig thiab inclined tube sedimentation technology. Nws qhov chaw thauj khoom tuaj yeem ncav cuag 10-15m³ / (m²·h), uas yog 5 npaug ntawm cov khoom siv hauv tsev.
coagulation sedimentation tank
Tsawg qhov chaw thauj khoom: Qhov chaw thauj khoom ntawm lub coagulation sedimentation tank feem ntau qis, feem ntau yog li ntawm 1 txog 3 m³ / (m²·h), nrog rau cov nqi tshwj xeeb nyob ntawm cov khoom xws li cov dej tsis zoo, hom coagulant, thiab ntau npaum li cas.
II. Kev tshem tawm efficiency
High -ntaus sedimentation tank
High SS tshem tawm tus nqi: Lub siab - ntom sedimentation tank cuam tshuam cov tshuaj colloidal los ntawm cov flocs loj, ua tiav SS tshem tawm tus nqi ntau dua 95% thiab tswj cov dej turbidity hauv qab 5 NTU.
Muaj zog poob siab load tsis kam: Lub siab - ceev sedimentation tank nta lub sludge ncig system, uas muaj peev xwm tswj tau ib tug siab sludge concentration yuav tsum tau rau uniform flocculation nyob rau hauv cov tshuaj tiv thaiv lub tog raj kheej, li no pab txhawb kev poob siab load kuj. Txawm hais tias qhov concentration thiab ntws tus nqi ntawm cov dej nyoos hloov, nws tuaj yeem tswj tau cov dej ntws ruaj khov.
High sludge concentration: Cov sludge uas ua los ntawm high -sludge sedimentation tank muaj cov ntsiab lus siab, uas tuaj yeem ncav cuag 2%-3%. Tsis tas yuav teeb tsa lub sludge thickening tank, txo cov av ua haujlwm thiab kev siv hluav taws xob.
coagulation sedimentation tank
High SS tshem tawm tus nqi: Lub coagulation sedimentation tank siv qhov kev txiav txim ntawm coagulant ua rau tshem tawm cov khoom los tsim alum thiab khom. Tus nqi tshem tawm SS feem ntau yog siab, tab sis tus nqi tshwj xeeb yog nyob ntawm cov yam ntxwv xws li cov dej tsis zoo, hom coagulant, thiab ntau npaum li cas. Feem ntau hais lus, qhov kev tshem tawm ntawm SS los ntawm cov txheej txheem coagulation sedimentation tuaj yeem tshaj 80%.
Tsis muaj zog poob siab load kuj: Lub coagulation sedimentation tank muaj kuj tsis muaj zog poob siab load kuj, thiab cov kev hloov nyob rau hauv cov dej raw concentration thiab txaus tus nqi yuav muaj ib tug tseem ceeb cuam tshuam rau effluent zoo.
Tsawg sludge concentration: Cov ntsiab lus ntawm cov sludge tsim nyob rau hauv lub coagulation sedimentation tank yog qhov tsawg, feem ntau yog li ntawm 0.5% mus rau 1%. Yuav tsum muaj sludge thickening tank rau kev kho mob ntxiv.
III. Lwm qhov sib txawv
Hauv pem teb
High-density sedimentation tank: Vim nws qhov siab load thiab kev kho mob siab, lub siab -density sedimentation tank occupies ib cheeb tsam me me, ua rau nws tshwj xeeb tshaj yog haum rau tej yaam num uas muaj av tsawg.
Coagulation sedimentation tank: Lub coagulation sedimentation tank occupies ib tug kuj loj cheeb tsam, yuav tsum tau txaus chaw rau lub layout ntawm cov chaw xws li sedimentation tanks thiab sludge thickening tanks.
Tus nqi khiav haujlwm
High-density sedimentation tank: High -density sedimentation tank txo cov coagulant ntau npaum li cas los ntawm cov sludge ncig system, thiab siab -concentration sludge paug txo tus nqi ntawm kev kho dewatering tom ntej, yog li ua rau cov nqi khiav hauj lwm qis.
Coagulation sedimentation tank: Lub coagulation sedimentation tank yuav tsum tau ntxiv ntawm ib tug loj npaum li cas ntawm coagulant los xyuas kom meej cov dej effluent zoo. Nyob rau tib lub sijhawm, qhov tsis tshua muaj sludge concentration ua rau cov nqi siab dua rau kev kho dewatering tom ntej, yog li ua rau cov nqi khiav lag luam kuj siab.