Yuav ua li cas 120,000 m³ / d Municipal WWTP Txiav Aeration Zog los ntawm 48% nrog Fine Bubble Disc Diffusers
Sector:Municipal Wastewater Treatment |Technology:Fine Bubble Disc Diffuser |Scale:10,608 units hla ob theem kev kho mob lom
Qhov project Overview
Ib qhov loj -scale qhov chaw kho dej khib nyiab hauv nroog (WWTP) hauv East Asia nrog tag nrho cov peev txheej tsim120,000 m³/dua haujlwm thoob plaws plaub theem kev tsim kho. The facility serves a dense urban catchment and is subject to Class I-A effluent discharge standards for ammonia-nitrogen.
Ob theem - Theem I (50,000 m³/d) thiab Theem IV (20,000 m³/d) - tau ua haujlwm tas li tau ntau xyoo yam tsis muaj kev hloov pauv hloov pauv. Raws li tus thawj diffusers deteriorate, lub chaw ua hauj lwm pab neeg soj ntsuam nce zog noj, tsis ruaj tsis khov yaj-oxygen (DO) faib, thiab ua kom lub nra hnyav. Tig qhov kev ua tau zoo thiab kev ua raws li qhov sib txawv, kev tswj xyuas cov nroj tsuag tau tso cai rau Aquasust los tsim thiab ua kom muaj kev hloov pauv huab cua thoob plaws ob theem ib txhij.
Qhov project, xa los ntawmAquasust's engineering teamnyob rau hauv ib tug phased retrofit tshaj li ntawm ob lub hlis, hloov ib tug ua ke tag nrho ntawm10,608 diffuser units, hloov ob theem los ntawm kev laus cov cuab yeej cuab tam mus rau ib qho Aquasust Φ270 hli EPDM nplua npuas disc diffuser platform.
Kev Sib Tw
2.1 Theem I: Tube Diffuser Clogging thiab Structure Decay
Theem I's bioreactions tanks tau pib nrog2,248 tube diffuser unitsua haujlwm ntawm nominal airflow ntawm 8 Nm³ / h ib chav. Tom qab xyoo ntawm kev pabcuam, lub kaw lus tau nthuav tawm cov cim qhia ntawm lig - theem membrane qaug zog:
Membrane pore blockage
- micro- pore fouling los ntawm biofilm thiab inorganic scaling ua npuas coalescence, hloov lub cev los ntawm nplua - npuas mus rau ntxhib- hom npuas thiab txo qis oxygen hloov efficiency (OTE).
Cov qauv kev laus
- EPDM membrane tawg thiab haum corrosion tsim huab cua channeling, tsim loj -ntev npuas plumes nrog tsawg ntog - cheeb tsam.
Zog pov tseg
- blowers ua haujlwm ntawm qhov siab tawm siab (76 kPa tiv thaiv lub qab nthab ntawm 81 kPa), siv ze li ntawm 0.146 kWh ib cubic meter ntawm cov dej khib nyiab kho - yuav luag ntawm lub taub hau.
Tuag aav thiab sludge sedimentation
- nrog cov pa tsis txaus thiab tsis sib npaug, cov hnab ntim quiescent tsim hauv qab lub raj arrays, ua rau cov sludge tsub zuj zuj thiab tsim cov cheeb tsam anaerobic micro-ib puag ncig.
Thaum ib tus neeg diffuser airflow poob qis dua qhov pib tsim, qhov kev tshwm sim nthuav tawm thoob plaws tag nrho bioprocess:
|
Cov tsos mob |
Keeb kwm |
|
OTE poob |
Npuas txoj kab uas hla txoj kev loj hlob, txo huab cua -dej cheeb tsam |
|
Nce blower siab |
Ua kom cov membrane tiv thaiv los ntawm fouling |
|
Sludge tuag aav |
Hauv qab tsis txaus -scouring nrawm |
|
H₂S odor events |
Localized anaerobic zones tso tawm sulfide |
|
NH₃-N effluent spikes |
Nthuav nitrification nyob rau hauv DO deficit |
|
Cov nqi kho mob siab dua |
Txhim kho chav hloov thiab tu zaus |
2.2 Theem IV: Aged Disc Diffuser Failure
Phase IV yog Ameslikas haum nrog3,722 disc diffusers ntawm tib 270 mm hom tab sis cov khoom tsim ua ntej. Tom qab cov chaw tsim khoom lag luam qhov kev pabcuam lub neej tau dhau los, kev ntseeg siab ntawm daim nyias nyias tau poob. Kev ntxhov siab tawg tau nthuav tawm thoob plaws ntau chav nyob ib txhij, ua rau lub diffuser lev ua haujlwm sib npaug rau qhov qhib - yeeb nkab. Blower tawm siab tau ruaj khov ntawm 57.3 kPa (tsim qab nthab: 61 kPa) - kev khiav hauj lwm nrog tsawg kawg nkaus kev nyab xeeb thiab ua kom ntxhib- npuas aeration ntawm nce nqi zog.
Txoj Kev Engineering
3.1 Diffuser Xaiv Logic
Aquasust pom zoo kom muaj kev hloov kho zoo ib yam rau lubΦ270 hli EPDM zoo npuas disc diffusernyob rau hauv ob theem raws li peb yam engineering:
Kev ua tau zoo ntawm kev hloov pauv oxygen:
Ntawm qhov tsim airflow ntau ntawm 2.0–6.0 Nm³ / h rau ib chav tsev, Φ270 hom ua tiav cov qauv kev hloov pauv cov pa oxygen (SOTE) ntawm Ntau dua lossis sib npaug li 30% hauv dej huv, sib xws rau qhov theoretical aeration efficiency ntawm ntau dua lossis sib npaug rau 4.5 kgO₂ / kWh.
Qhov zoo tshaj plaws kev pab cuam cheeb tsam:
0.4–0.8 m²/unit service area specifications aligns with the tank floor geometry for the Phase I thiab Phase IV, enabling dens but non-overlapping coverage.
Txo qhov system siab:
Ntawm qhov muaj peev xwm kho tau zoo sib xws, Φ270 disc hom ua haujlwm ntawm qhov tsis zoo ntawm huab cua tsis zoo (tsawg dua lossis sib npaug li 3.5 kPa) dua li cov khoom qub tube diffuser array, ncaj qha txo lub tshuab ua haujlwm siab thiab txuas ntxiv lub tshuab tshuab lub neej.
3.2 Hydraulic thiab Aeration Design Verification
Phase I
Qhov zoo tshaj plaws aeration pem teb cheeb tsam: ~ 3,800 m²
Tag nrho cov diffusers ntsia: 7,532 units
Qhov chaw pabcuam: 0.50 m² / unit (hauv 0.4-0.8 m² tsim zoo)
Blower configuration: ob active + ib standby, ntsuas airflow 150 m³ / min
Chav tsev airflow ntawm tus qauv tsim: 2.39 Nm³ / h / unit (hauv 2.0-6.0 Nm³ / h lub qhov rais ua haujlwm)
Phase IV
Qhov zoo tshaj plaws aeration pem teb cheeb tsam: ~ 1,665 m²
Tag nrho cov diffusers ntsia: 3,076 units
Qhov chaw muab kev pab cuam: 0.547 m² / unit (nyob rau hauv tsim optimum)
Blower configuration: ob active + ib standby, rated airflow 60 m³ / min
Chav tsev airflow ntawm tus qauv tsim: 2.34 Nm³ / h / unit (hauv qhov rais ua haujlwm)
Ob theem ua haujlwm nyob rau hauv qis dua - nruab nrab ntawm 2.0–6.0 Nm³ / h ntau yam, kom ntseeg tau tias micro- npuas tsim, ua kom tiav hauv pem teb, thiab cov npoo zoo li hauv qab ntawm cov cua nkag sab saud uas ua rau muaj qhov sib txawv ntawm daim nyias nyias.
Kev daws & Scope ntawm Supply
Aquasust tau muab thiab teeb tsa lub pob aeration hloov tshiab thoob plaws ob theem kev kho mob. Qhov kev nthuav dav tsis yog tsuas yog cov khoom diffuser nkaus xwb tab sis kuj tseem muaj cov txheej txheem txuas ntxiv uas yuav tsum tau ua kom ntev -lub sij hawm, qis- kev ua haujlwm tu.
4.1 Φ270 mm EPDM Fine Bubble Disc Diffuser - Kev qhia tshwj xeeb
|
Parameter |
Specification |
|
Qauv |
Φ270 hli EPDM Disc Diffuser |
|
Cua ntws ntau yam |
2.0 - 6.0 Nm³ / h rau ib chav |
|
npuas taub |
Tsawg dua los yog sib npaug li 2 hli |
|
SOTE ( dej huv) |
Ntau dua lossis sib npaug li 30% |
|
Oxygen hloov peev xwm |
Ntau dua lossis sib npaug li 0.13 kgO₂ / h rau ib chav |
|
Theoretical aeration efficiency |
Ntau dua lossis sib npaug li 4.5 kgO₂ / kWh |
|
Cua siab poob |
Tsawg dua lossis sib npaug li 3.5 kPa |
|
Kev pab lub neej |
Ntau dua lossis sib npaug li 5 xyoos |
|
Qhov chaw pabcuam zoo tshaj plaws |
0.4 - 0.8 m² / unit |
4.2 Diffuser Quantity Summary
|
Kev Kho Mob Phaj |
Tsim Muaj Peev Xwm |
Chav nyob Hloov (Legacy) |
Aquasust Φ270 Chav nyob nruab |
|
Phase I |
50,000 m³/d |
2,248 tube diffusers |
7,532 |
|
Phase IV |
20,000 m³/d |
3,722 disc diffusers (hnub nyoog) |
3,076 |
|
Tag nrho |
70,000 m³/d |
5,970 |
10,608 |
4.3 Cov khoom siv ntxiv
Huab cua tshem tawm silencers (pas nyem / blowdown) rau kev tiv thaiv lub tshuab thaum tu
UPVC ntws li qub ntawm lub tank qis los pab txhawb kev dewatering thiab diffuser tshuaj xyuas yav tom ntej
Kaum ob (12) 304 stainless-steel membrane acid- ntxuav cov rooj sib txoos (Phase IV) rau hauv -situ EPDM membrane tu yam tsis tas lub tank dewatering
Installation & Commissioning
Aquasust tau ua tiav qhov retrofit hauv ob ntu ntu ntu ntu, ua ntej qhov cuam tshuam tsawg kawg rau cov nroj tsuag - muaj peev xwm kho tau dav. Tus txheej txheem plaub- cov txheej txheem tau siv rau txhua theem:
Tank Dewatering & Tshuaj xyuas
Txhua cov tshuaj tiv thaiv kab mob lom tau raug coj tawm hauv kev sib hloov, sludge raug xa mus rau cov tso tsheb hlau luam uas nyob ib sab, thiab lub tank tau ntws. Aquasust site engineers tau ua ib daim ntawv ntsuam xyuas tag nrho ntawm cov kav dej uas twb muaj lawm, lub ntsiab aeration headers, thiab cov ntsiab lus thauj tog rau nkoj ua ntej yuav pib rhuav tshem.
Txoj Cai Tshem Tawm
Tag nrho cov diffuser uas twb muaj lawm, eeb, thiab cov khoom sib txuas tau raug tshem tawm. Qhov twg tube diffuser laterals tau dhau qhov kev pabcuam, cov yeeb nkab network kuj tau hloov. Cov khib nyiab tau raug tshem tawm, thiab lub tank pem teb tau npaj rau qhov kev teeb tsa tshwj xeeb rau daim phiaj tshiab disc diffuser.
Aquasust Φ270 Disc Diffuser Installation
Cov tshiab EPDM disc diffusers tau teeb tsa hauv cov qauv tsim qauv raws li kev tsim hydraulic, nrog rau txhua chav tsev torque-tuaj yeem tiv thaiv huab cua bypass ntawm lub eeb txuas. Cov kav dej tom qab, lub taub hau loj, cov dej ntws tawm, thiab cov khoom siv ntxuav tawm tom qab ntawd tau ua haujlwm thiab siab- sim ua ntej lub tank rov qab.
Kev Txiav Txim Siab Ua Haujlwm & DO Verification
Lub tank tau rov ua dua, lub tshuab cua pib thaum txo qis, thiab DO nyeem tau raug coj los ntawm ntau lub ntsiab lus thoob plaws lub tank kab sib chaws thaum pib 24-teev ramp- lub sijhawm nce. Airflow tau nce zuj zus mus rau qhov chaw ua haujlwm -point. Cov ntaub ntawv txheej txheem tau lees paub tias tsis sib xws DO faib thiab ruaj khov nitrification nyob rau hauv lub qhov rais sov so.
Tag nrho ntawm - lub sijhawm ntawm qhov chaw:Theem IV - 16 hnub; Theem I - 41 hnub (xav txog lub tank loj dua thiab ntim diffuser).
Txheeb xyuas cov txiaj ntsig
Cov ntaub ntawv kev ua tau zoo tau sau tseg thiab muab piv rau qhov zoo li-rau- zoo li lub hauv paus (tib lub hlis twg, xyoo- dhau- xyoo), tshem tawm qhov kub thiab txias ntawm lub caij nyoog thiab muaj peev xwm thauj khoom sib txawv los ntawm kev tshuaj xyuas.
6.1 Consolidated Performance Comparison
|
KPI |
Theem I - Ua ntej |
Theem I - Tom qab |
Hloov |
|
Kev kho mob txhua hnub (m³ / d) |
43,800 |
51,400 |
+17.5% |
|
Active blowers khiav |
2 |
1 |
–50% |
|
Blower tawm siab (kPa) |
76 |
62 |
–18.4% |
|
Unit zog noj (kWh/m³) |
0.146 |
0.075 |
–48.6% |
|
NH₃{0}}N (mg/L) |
0.456 |
0.231 |
Ua raws |
|
Txhua hli NH₃-N tshem tawm (tonnes/hli) |
30.5 |
64.8 |
+112% |
|
KPI |
Phase IV - Ua ntej |
Phase IV - Tom qab |
Hloov |
|
Kev kho mob txhua hnub (m³ / d) |
20,600 |
23,300 |
+12.9% |
|
Blower tawm siab (kPa) |
57.3 |
51.6 |
–9.95% |
|
Unit zog noj (kWh/m³) |
0.155 |
0.089 |
–42.6% |
|
NH₃{0}}N (mg/L) |
0.316 |
0.238 |
Ua raws |
|
Txhua hli NH₃-N tshem tawm (tonnes/hli) |
14.4 |
29.3 |
+103% |
6.2 Kev txo qis zog - Thawj Tsav Tsheb
Cov txiaj ntsig tseem ceeb tshaj plaws ntawm kev ua haujlwm yogtxo nyob rau hauv unit aeration zog: Theem I poob ntawm 0.146 mus rau 0.075 kWh/m³ (–48.6%), thiab Phase IV ntawm 0.155 txog 0.089 kWh/m³ (–42.6%). Ntawm ob theem ua ke, qhov chaw tam sim no kho lub ntim ntau dua txhua hnub thaum khiav tsawg lub tshuab cua ntawm qis dua.
Theem I hloov ntawm ob lub tshuab ua haujlwm mus rau ib qho - ntawm ze li ob npaug ntawm qhov kev xa tawm - yog qhov pom tseeb tshaj plaws ntawm kev ua haujlwm tau zoo. Kev kwv yees yooj yim them rov qab ntawm cov peev peev yog nyob rau hauv kwv yees li 18 lub hlis raws li kev ua haujlwm txuag hluav taws xob ib leeg.
6.3 Blower Siab txo - Engineering Safety Margin
Qhov txo qis hauv lub tshuab nqus pa tawm tsis yog tsuas yog kev txuag hluav taws xob xwb; nws nqa tus nqi tsim nyog thiab kev ntseeg siab:
Theem I: Siab poob ntawm 76 kPa mus rau 62 kPa tiv thaiv lub qab nthab ntawm 81 kPa. Kev khiav hauj lwm-rau- qab nthab qhov sib txawv ntawm 5 kPa mus rau 19 kPa - ze li plaub npaug ntawm qhov chaw ua haujlwm nyab xeeb.
Theem IV: Siab poob ntawm 57.3 kPa mus rau 51.6 kPa tiv thaiv lub qab nthab ntawm 61 kPa. Lub taub hau ntau dua ob npaug.
Kev ua haujlwm qis dua txhais tau hais tias txo qis thermal thiab mechanical kev ntxhov siab ntawm lub tshuab blower, impellers, thiab lub cev muaj zog, txuas ntxiv cov cuab yeej siv lub neej thiab txo qis qhov tshwm sim ntawm kev nyab xeeb valve actuation, yeeb nkab sib koom ua ke, thiab tsis tau npaj kaw.
6.4 Ammonia-Kev Tshem Tawm Nitrogen - Kev Ua Raws Cai thiab Kev Kho Kom Zoo
Txawm hais tias kho qhov ntim ntau dua txhua hnub, ob theem tau tswj cov dej ntws NH₃-N zoo dua Chav Kawm I-A qhov pib. Qhov tseem ceeb tshaj, tag nrho cov ammonia tshem tawm ib hlis ntau dua ob npaug:
Theem I: los ntawm 30.5 mus rau 64.8 tonnes / hli (+112%)
Theem IV: los ntawm 14.4 mus rau 29.3 tonnes / hli (+103%)
Qhov txiaj ntsig no qhia txog kev txhim kho DO faib ua kom muaj tag nrho thiab ruaj khov nitrification thoob plaws tag nrho lub tank ntim - qhov tshwm sim ncaj qha ntawm qhov zoo sib xws - npuas kev pab cuam xa los ntawm Aquasust Φ270 disc diffuser daim phiaj.
Vim li cas Aquasust
Aquasust tshwj xeeb hauv kev tsim vaj tsev, tsim khoom, thiab siv qhov chaw ua kom zoo npuas aeration tshuab rau hauv nroog thiab kev kho dej khib nyiab. Qhov project no nthuav qhia tag nrho - lub peev xwm hauv pawg uas txawv Aquasust los ntawm diffuser -tsuas yog tus xa khoom:
Tsim - tsim kev xa khoom
Los ntawm hydraulic qauv thiab diffuser layout optimization rau ntawm -kev tswj xyuas qhov chaw thiab cov txheej txheem commissioning
Kev ua tau zoo- cov lus qhia tshwj xeeb
Txhua Aquasust Φ270 EPDM disc diffuser yog tsim los rau ntau dua lossis sib npaug rau 30% SOTE thiab Ntau dua lossis sib npaug rau 4.5 kgO₂ / kWh kev ua haujlwm, nws tus kheej tuaj yeem txheeb xyuas tau raws li GB / T 17393 cov txheej txheem kuaj.
Kev koom ua ke ntxiv
Kev tshem tawm cov pa hauv huab cua, cov dej ntws tawm, thiab cov kua qaub-cov tshuab ntxhua khaub ncaws tau muab los ua ib pob kev sib koom tes, tsis yog tom qab
Cov txiaj ntsig tau pov thawj
Documented post-retrofit energy reduction of 42–49%, ammonia removal improvement of >100%.
Npaj los ntsuas qhov kev hloov kho aeration rau koj qhov chaw?
Hu rau pab pawg Aquasust engineering nrog koj lub tank qhov ntev, tsim ntws, thiab cov lus qhia tshwj xeeb uas twb muaj lawm. Peb yuav npaj cov txheej txheem diffuser ua ntej, kev pabcuam-thaj chaw suav, thiab kwv yees kwv yees txuag hluav taws xob yam tsis muaj nqi.
Tshawb xyuas Aquasust Φ270 mm EPDM Disc Diffuser
Aeration System Retrofit Services
Thov Kev Ntsuas Qhov project