Cov neeg ua haujlwm dej khib nyiab feem ntau xav tias kev txhim kho sedimentation txhais tau tias tsim kom tob dua, cov tank loj dua. Txoj kev xav ntawm lub tank ntiav inverts qhov kev xav: qhov tseem ceeb yog thaj chaw saum npoo, tsis yog qhov tob. Ib qho radial-flow inclined tube settler nyob rau hauv txoj kev tshawb no txiav tshem tawm cov khib nyiab los ntawm41.8%- los ntawm 212.4 mg/L nqes mus rau 123.6 mg/L - ntawm 30-feeb hydraulic tuav lub sij hawm, nyob rau hauv ib tug hneev taw deb me tshaj li ib tug pa clarifier.
Txoj Cai Ntxim Saib Ntxim Ua
Inclined tube settlers ua haujlwm ntawm lub hauv paus "kev xav ntawm lub tank ntiav." Rau qhov zoo tshaj plaws sedimentation tank, qhov tseem ceeb tshaj tawm tshaj tawm yog muab los ntawm μ0= Q/A, qhov twg Q yog tus nqi ntws thiab A yog thaj chaw saum npoo av. Yog tias Q nyob tas li, qhov loj ntawm thaj chaw saum npoo qis qis dua μ0, tso cai rau me me, qeeb dua -tawm cov khoom kom raug ntes thiab txiav txim siab.
Thaum thaj chaw nyob tau muab faib ua ntau txheej nyias uas siv cov raj inclined los yog cov phaj sib npaug, qhov kev daws teeb meem zoo tau txo qis rau 1 / n ntawm qhov qub. Rau tib txoj kev kho mob zoo, lub sij hawm khaws cia yog luv luv thiab qhov kev kho mob muaj peev xwm muab tau los ntawm n. Conversely, yog hais tias qhov kev kho mob ntim yog nyob tas mus li, qhov kev daws teeb meem zoo txhim kho dramatically.
Txoj kev tshawb no siv radial-flow inclined tube settler nrog adown -flow configuration: Cov dej khib nyiab nkag los ntawm sab saum toj ntawm cov phaj inclined thiab ntws mus rau hauv qab thaum cov khoom raug tshem tawm, nrog rau ob qho tib si sludge thiab clarified kua tawm hauv qab. Lub down - ntws tsim txhawb nqa sludge zawv zawg, txo cov tsub zuj zuj ntawm lub raj nplaim, thiab tso cai rau cov kaum sab xis me me (30℃-40 degree) nrog cov cheeb tsam loj dua - ua rau muaj kev ua haujlwm zoo dua sedimentation.
Kev sim teeb tsa & Raw Dej Zoo
Cov txheej txheem sim muaj xws li radial-flow inclined tube settler, feed pump, coagulant dosing system, thiab cov cuab yeej saib xyuas. Cov dej khib nyiab hauv tsev tau muab tshuaj nrog polyaluminum chloride (PAC) ua coagulant thiab maj mam sib xyaw ua ntej nkag mus rau hauv qhov chaw. Cov yam ntxwv dej nyoos tom qab pom tau pom hauv qab no.
| Parameter | Tus nqi |
| Daim ntawv lim + lub raj mis hnyav ua ntej (g) | 24.6411 |
| Daim ntawv lim + lub raj mis hnyav tom qab (g) | 24.6942 |
| Qhov sib txawv SS (g) | 0.0531 |
| SS concentration (mg / L) | 212.4 |
| Absorbance | 0.217 |
| COD (mg / L) | 303.79 |
Cov dej khib nyiab hauv tsev tau nqa SS concentration ntawm 212.4 mg / L thiab COD ntawm 303.79 mg / L - tus neeg sawv cev ntawm cov khoom noj nruab nrab ntawm lub nroog muaj zog tom qab kev tshuaj ntsuam ua ntej, thiab xav kom txaus los nthuav tawm qhov sib txawv ntawm kev ua haujlwm. SS thiab COD tau ntsuas los ntawm gravimetric filtration thiab COD standard calibration feem.
Cov nyhuv ntawm Hydraulic Retention Time
Thawj qhov sib txawv ntawm kev sim yog hydraulic retention time (HRT). Nrog lub inlet valve tsau ntawm 75℃thiab scraper ceev ntawm Chaw 1, cov qauv tau kos rau ntawm 10, 20, 30, 40, thiab 50 feeb ntawm kev ua haujlwm.
| Parameter | 10 feeb | 20 feeb | 30 feeb | 40 feeb | 50 feeb |
| SS (mg / L) | 214.8 | 158.8 | 123.6 | 136.4 | 151.2 |
| COD (mg / L) | 255.57 | 268.72 | 239.49 | 259.95 | 276.03 |
Ob qho SS thiab COD tshem tawm tau zoo dua qub thaum HRT nce mus txog 30 feeb, tom qab ntawd tsis kam. Qhov zoo tshaj plaws yog 30 feeb, xa qhov qis tshaj SS concentration (123.6 mg / L, txo 41.8%.los ntawm cov dej nyoos) thiab qis tshaj COD (239.49 mg / L, txo 21.2%.). Tshaj li 30 feeb, kev rov ua haujlwm ntawm cov khoom siv uas yuav tsum tau teeb tsa, txo kev ua haujlwm zoo - qhia meej tias ntev dua tsis zoo dua.
Cov nyhuv ntawm Scraper Speed
Nrog HRT tsau ntawm 10 feeb, scraper ceev tau sib txawv ntawm tsib qhov chaw (0 txog 4) txhawm rau txheeb xyuas qhov zoo tshaj plaws scraping tus nqi.
| Parameter | Kev teeb tsa 0 | Kev teeb tsa 1 | Kev teeb tsa 2 | Kev teeb tsa 3 | Kev teeb tsa 4 |
| SS (mg / L) | 206.8 | 167.2 | 123.2 | 136.4 | 150.0 |
| COD (mg / L) | 311.28 | 289.18 | 251.18 | 262.87 | 274.56 |
Kev teeb tsa 2 xa qhov kev ua tau zoo tshaj plaws: SS poob rau123.2 mg / Lthiab COD rau251.18 mg / L. Thaum qis qis (Chaw 0 thiab 1), sludge sau rau ntawm qhov chaw inclined tube, shrinking thaj chaw zoo. Nyob rau ntawm qhov nrawm dua (Chaw 3 thiab 4), kev kub ntxhov ntau dhau rov- tshem tawm cov khoom tawm. Kev teeb tsa 2 ntaus qhov sib npaug ntawm lub sijhawm tshem tawm sludge thiab kev cuam tshuam tsawg kawg nkaus.
Cov nyhuv ntawm Hydraulic Loading
Hydraulic loading yog varied los ntawm lub inlet valve lub kaum sab xis (30 degree, 45 degree, 60 degree, thiab 75 degree) nrog lub scraper ceev ntawm qhov chaw 2 thiab ib tug 10-feeb khiav lub sij hawm.
| Parameter | 30 degree | 45 degree | 60 degree | 75 degree |
| SS (mg / L) | 140.4 | 158.8 | 163.2 | 154.8 |
| COD (mg / L) | 295.02 | 324.25 | 347.63 | 312.56 |
Lower hydraulic loading tsis tu ncua ua tau zoo dua. Ntawm 30℃(tsawg kawg nkaus), SS yog qis tshaj ntawm140.4 mg / Lthiab COD ntawm295.02 mg / L. Raws li kev thauj khoom nce ntxiv, qhov nce siab tshaj tawm hauv qhov chaw nyob tau nce, txiav lub sijhawm daws teeb meem zoo rau cov khoom raug tshem tawm. Ob leeg SS thiab COD trended upwards nrog loading ntau dua, paub meej tias tus neeg nyob ua hauj lwm zoo tshaj plaws nyob rau hauv qis deg overflow tus nqi - thiab underscoring tus nqi ntawm dav dav cheeb tsam nyob rau hauv tsim.
Optimal Operating Parameters & Design Takeaways
| Parameter | Kev teeb tsa zoo | Kev ua tau zoo tshaj plaws |
| Hydraulic tuav lub sijhawm | 30 feeb | SS 123.6 mg/L (−41.8%), COD 239.49 mg/L (−21.2%) |
| Scraper ceev | Kev teeb tsa 2 (nruab nrab) | SS 123.2 mg/L, COD 251.18 mg/L |
| Hydraulic loading | Tsawg tshaj plaws (30℃valve) | SS 140.4 mg/L, COD 295.02 mg/L |
| Lub kaum sab xis | 30℃-40℃(down{2}} ntws) | Max siv thaj chaw nyob |
• Optimal HRT: 30 feeb.Lub sij hawm luv luv muab kev daws teeb meem tsis txaus; lub sij hawm ntev ua rau resuspension ntawm cov khoom nyob.
• Optimal scraper ceev: nruab nrab (Setting 2).qeeb dhau cia cov sludge tsim rau ntawm cov kav dej; nrawm dhau tsim turbulence uas resuspends hais. Qhov nruab nrab scraping tus nqi muab qhov zoo tshaj plaws tag nrho kev ua tau zoo.
• Hydraulic loading: qis dua yog zoo dua.Kev kho kom zoo li qub tau zoo dua qub ntawm kev thauj khoom qis dua, yog li cov neeg tsim qauv yuav tsum ua qhov tseem ceeb ntawm thaj chaw txaus kom ua kom cov dej ntws qis qis.
• Qhov kev xav ntawm lub tank qis validated.Kev faib thaj chaw nyob rau hauv ntau cov txheej nyias nyias ua rau txhim kho sedimentation efficiency yam tsis tau nce hneev taw.
• Down -Flow configuration yog qhov zoo.Nws txhawb nws tus kheej- ntxuav ntawm cov hlab ntsha inclined thiab tso cai rau cov kaum sab xis me me (30℃-40 degree), ua rau thaj chaw muaj txiaj ntsig zoo thiab kev ua haujlwm tag nrho.
Peb Inclined Tube Settler Solutions
Txoj kev tshawb no qhia tau hais tias tsim nyog thiab kev xaiv tsis zoo yog txiav txim siab rau siab -kev ua tau zoo-kua sib cais nrog inclined tube settlers. Peb muab ntau yam ntawm inclined tube settler khoom thiab kev pab cuam:
• Kev cai -tsim radial- ntws thiab lub voj voos inclined tube settlers rau hauv nroog thiab kev siv;
• Siab- zoo PP/PVC inclined tube media nrog ntau yam specifications (25 hli mus rau 80 hli raj txoj kab uas hla);
• Ua kom tiav scraper thiab sludge sau tshuab rau kev lag luam txhim khu kev qha;
• Kev txhawb nqa rau kev tsim qauv, parameter optimization, thiab kev daws teeb meem.
Siv: Qin B. Kev Tshawb Fawb Txog Kev Kho Dej Hauv Tsev Nrog Radial Flow Inclined Tube Settling Tank [J]. Environmental Science thiab Management, 2012, 37(4): 82-85, 116.
Txiav SS 41.8% Nrog Radial -Flow Tube Settler
A down-flow inclined tube settler txiav SS 41.8% thiab COD 21.2% ntawm 30-feeb HRT. Juntai tube settlers xa cov compact, high-efficiency clarification.