Los ntawm: Kate
Email:kate@aquasust.com
Hnub tim: 27 Kaum Ib Hlis 2024
Lub aeration tank yog ib qho tseem ceeb ntawm kev kho cov dej khib nyiab, thiab nws cov qauv tsim thiab kev suav kom muaj nuj nqis ncaj qha cuam tshuam rau kev kho mob thiab cov nqi ua haujlwm. Kab lus no qhia txog cov ntsiab cai tseem ceeb ntawm cov qauv tsim thiab kev suav cov kauj ruam rau aeration tanks, suav nrog ib qho piv txwv tshwj xeeb rau kev piav qhia.
1. Kev txiav txim siab tseem ceeb rau Aeration Tank Tsim
1. Lub hom phiaj Parameters
Txiav txim siab qhov yuav tsum tau muaj dej zoo raws li qhov ua tau zoo thiab cov dej tsis zoo (piv txwv li, BOD, COD, TSS, ammonia nitrogen). Piv txwv li:
- Influent BOD: 270 mg/L
- Effluent BOD: Tsawg dua lossis sib npaug li 20 mg / L
- Tus nqi ntws ntws: 10, 000 m³ / d
2. Aeration hom xaiv
Cov txheej txheem aeration muaj xws li nto aeration, mechanical aeration, thiab ntshiab oxygen aeration. Blower-based aeration nrog zoo npuas diffusers los yog raj diffusers yog dav siv.
3. Kev ntsuas pa oxygen
- Txiav txim siab qhov muaj kuab paug (BOD, ammonia nitrogen) kom tshem tawm.
- Siv cov qauv kev xav tau oxygen ib txwm:
Oxygen Demand=BOD Load to be Removed (kg/day) / Oxygen Utilization Rate
4. Mixed Liquor Suspended Solids (MLSS)
Xaiv qhov tsim nyog MLSS concentration raws li cov txheej txheem yuav tsum tau ua, feem ntau 2,000–5,000 mg/L kom ntseeg tau tias kev ua haujlwm ntawm microbial.
5. Hydraulic Retention Time (HRT) thiab Tank Volume
- HRT feem ntau yog tsim los rau 4-8 teev.
- Kev siv lub tank qhov tob feem ntau yog 4-6 meters.
- xam lub tank ntim:
V=Q × HRT / 24
qhov twg Q yog tus nqi ntws (m³ / h).
2. Cov kauj ruam rau Aeration Tank Quantity xam
Piv txwv li: Kev kho cov dej ntws ntawm 10, 000 m³ / hnub nrog lub zog BOD ntawm 270 mg / L thiab cov dej tawm ntawm BOD ntawm 20 mg / L.
1. Txiav txim siab BOD yuav raug tshem tawm
BOD_ tshem tawm=(270 - 20) × 10,000=2,500,000 mg/day=2,500 kg/day
2. Xam Oxygen Demand
Piv txwv li kev siv cov pa oxygen ntawm 20% thiab 1.5 kg O₂ xav tau ib kg BOD tshem tawm:
Oxygen Demand {{0}} (2,500 × 1.5) / 0.2=18,750 kg/hnub
3. Configure Aeration Equipment
- Xaiv cov diffusers: Piv txwv li, zoo npuas diffusers nrog cov cua ntws ntawm 1.5-8 m³ / h thiab kev hloov pauv oxygen ntawm 30%.
- xam qhov xav tau airflow:
Cua Flow {{0}},750 / (0.2 × 0.3)=312,500 m³ / hnub
Hloov mus rau ib teev airflow:
312,500 ÷ 24 = 13,020 m³/h
4. Xam lub Tank Volume
Piv txwv tias HRT=6 teev:
V = (10,000 × 6) ÷ 24 = 2,500 m³
5. Txiav txim seb tus naj npawb ntawm Diffusers
Piv txwv tias txhua tus diffuser muaj peev xwm ntawm 5 m³ / h:
Tus naj npawb ntawm Diffusers=13,020 ÷ 5=2,604
3. Cov lus pom zoo rau cov phiaj xwm Engineering
- Tank Shape Xaiv
Rectangular los yog ncig tso tsheb hlau luam yog ib txwm muaj rau cov tshuab aeration, thaum lub tank sib sib zog nqus yog qhov zoo tagnrho rau kev kho mob loj hauv qhov chaw txwv.
- Cov khoom siv Redundancy
Txhim kho 1.1–1.2 npaug ntawm cov khoom siv suav los tswj cov khoom hloov pauv lossis kev saib xyuas cov khoom siv.
- Kev soj ntsuam online
suav nrog cov tshuaj tiv thaiv oxygen yaj (DO) kom sib npaug ntawm cov pa oxygen thiab tsis txhob muaj cov pa ntau dhau lossis tsis muaj oxygen.
Xaus
Tsim lub aeration tank yuav tsum muaj kev nkag siab zoo ntawm cov pa phem, muaj peev xwm muab cov pa oxygen, cov xwm txheej hydraulic, thiab cov nqi ua haujlwm. Cov lus qhia ntxaws ntxaws thiab kev teeb tsa cov cuab yeej tsim nyog ua kom muaj kev kho mob zoo thiab cov nqi kho kom zoo. Hauv kev siv tswv yim, kev hloov kho thiab kev ua kom zoo yuav tsum tau ua raws li cov kev xav tau tshwj xeeb thiab qhov chaw nyob.