8613600513715
[email protected]
mwwXaiv lus

Seafood processing Wastewater Treatment Case Study – Design & Results|Shandong cog

Jan 26, 2026

Tso lus

Case Study – Kev kho dej khib nyiab rau lub chaw ua zaub mov noj nqaij nruab deg – Ib qho piv txwv siv tau

 

 

Abstract

Cov ntaub ntawv kawm no qhia meej txog kev tsim, kev siv, thiab kev ua haujlwm ntawm kev kho dej khib nyiab rau No. 1 Seafood Processing Plant ntawm ib pab pawg neeg noj nqaij nruab deg hauv xeev Shandong, Suav. Cov nroj tsuag tshwj xeeb hauv kev tsim cov khoom noj khoom haus khov khov, tsim cov dej khib nyiab feem ntau los ntawm cov khoom siv raw. Cov dej khib nyiab no muaj cov dej ntau ntau - cov khoom sib xyaw ua ke thiab cov khib nyiab zoo uas tau los ntawm cov nqaij ntses, feem ntau cov organic nitrogenous compounds. Kev tso tawm tsis kho yuav ua rau muaj kuab paug loj rau cov dej nyob ib puag ncig. Txoj haujlwm no tau ua tiav ib qho kev sib koom ua ke physico- cov txheej txheem tshuaj lom neeg thiab tshuaj lom neeg kom ua tau raws li kev tso tawm. Daim ntawv tshaj tawm no muab cov ntsiab lus nthuav dav ntawm cov yam ntxwv muaj txiaj ntsig, xaiv cov cuab yeej kho mob, cov ncauj lus kom ntxaws txog chav tsev, cov ntaub ntawv kev ua tau zoo, thiab kev lag luam project.

 

 

1. Kev Taw Qhia: Qhov Kev Sib Tw ntawm Cov Khoom Noj Hiav Txwv Ua Dej Num

Kev lag luam khoom noj nqaij nruab deg tsim cov dej ntws tawm uas muaj cov organic ntau ntawm cov proteins, rog, thiab cov khib nyiab tshem tawm. Cov kab mob no tshwm sim los ntawm cov ntshav, viscera, ntses nplai, thiab dej ntxuav. Cov teeb meem tseem ceeb suav nrog:

  • Siab Organic Strength: Ntsuas raws li Biochemical Oxygen Demand (BOD₅) thiab Chemical Oxygen Demand (COD), qhia tias muaj peev xwm ua kom muaj pa oxygen ntau ntxiv hauv cov dej tau txais.
  • Khoom noj khoom haus: Cov qib siab ntawm nitrogenous compounds los ntawm cov proteins.
  • Roj, Roj, thiab Roj (FOG): tuaj yeem ua rau muaj teeb meem kev ua haujlwm thiab ua rau lub ntsej muag scum.
  • Suspended Solids (SS): suav nrog cov khoom zoo organic.Direct discharge ntawm cov dej khib nyiab no ua txhaum ib puag ncig cov cai, ua phem rau cov dej ecosystems los ntawm eutrophication thiab oxygen depletion, thiab ua rau muaj kev phom sij rau pej xeem kev noj qab haus huv. Yog li ntawd, kev siv tau zoo ntawm - qhov chaw kho mob tsis yog tsuas yog txoj cai tswjfwm nkaus xwb tab sis kuj yog lub luag haujlwm ntawm lub tuam txhab ib puag ncig.

2. Qhov project Scope: Txhais qhov teeb meem

2.1 Cov dej khib nyiab ntau thiab zoo

  • Tus nqi ntws: 200 m³ / hnub (25 m³ / teev, ib zaug -hloov ntau lawm).
  • Cov yam ntxwv zoo:
  1. COD: 1,500 mg/L
  2. BOD₅: 800 mg/L (BOD₅/COD ≈ 0.53, qhia txog biodegradability zoo)
  3. Tsiaj & Zaub Roj: 50 mg/L
  4. SS: 400 mg/L

2.2 Cov qauv xa tawm

Cov tshuaj tua kab mob yuav tsum tau ua kom tau raws li qhovQib II cov qauv ntawm Tuam Tshoj Integrated Wastewater Discharge Standard (GB 8978-1996):

  • COD Tsawg dua lossis sib npaug li 150 mg / L
  • BOD₅ Tsawg dua lossis sib npaug li 30 mg / L
  • Tsiaj & Zaub Roj Tsawg dua lossis sib npaug li 15 mg / L
  • SS Tsawg dua lossis sib npaug li 150 mg / L

3. Kev daws: Cov txheej txheem kho mob tau npaj

Muab cov dej khib nyiab cov yam ntxwv-zoo biodegradability tab sis muaj cov roj, cov khib nyiab, thiab cov organic/nitrogen loads siab -ib tug hybrid "Roj sib cais / Sedimentation + Anaerobic (Hydrolysis / Acidification) + Aerobic (Aeration & Bio- tiv tauj Oxidation) + Flotation" txheej txheem tau raug xaiv. Qhov no ntau yam -theem mus kom ze ua kom muaj kev kho mob zoo los ntawm kev hais txog cov pa phem ntau yam ua ntu zus.

Cov txheej txheem flow diagram yog illustrated nyob rau hauvDaim duab 1.

info-1070-670

 

4. Cov txheej txheem nthuav dav thiab tsim qauv

4.1 Kev kho ua ntej-kev kho mob & Kev Kho Mob Ntiag Tug

  • Bar Screen (2 units): Lub Hom Phiaj: Txhawm rau cuam tshuam cov khoom loj uas raug tshem tawm thiab ntab (piv txwv li, ntses nplai, khib nyiab).
  1. Qhov Loj: 700mm (L) x 500mm (W).
  2. Bar nrug: 5mm.
  3. Khoom siv: Hlau.
  • Roj Separation & Sedimentation Tank: Lub Hom Phiaj: Tshem tawm cov roj ntab / cov rog thiab cov xuab zeb sib haum / hnyav tshem tawm cov khib nyiab.
  1. Ua Haujlwm Volume: 40 m³.
  2. Hydraulic Retention Time (HRT): 1.5 teev.
  3. Kev tsim kho: Underground reinforced pob zeb (RC).

4.2 Kev Kho Mob Biological (Core Process)

  • Hydrolysis/Acidification Tank (Anaerobic): Lub hom phiaj: txhawm rau rhuav tshem complex, refractory organic molecules (proteins, fats) mus rau hauv yooj yim, yooj yim biodegradable tebchaw (volatile fatty acids), yog li txhim kho tag nrho biodegradability (BOD / COD piv). Qhov kev kho ua ntej no - kho tau zoo txhim kho kev ua haujlwm ntawm cov theem tom ntej aerobic.
  1. Loj: 60 m³.
  2. HRT: 2.4 teev.
  3. Kev tsim kho: Semi- underground RC.
  4. Internal Feature: Ua ke nrog polyethylene biofilm media los txhawb kev loj hlob ntawm microbial.

  • Aeration Tank (Conventional Activated Sludge): Lub Hom Phiaj: Kev kho thawj zaug aerobic rau kev tshem tawm ntau ntawm soluble BOD thiab COD.
  1. Loj: 75 m³.
  2. HRT: 3 hnub.
  3. Kev tsim kho: Semi- underground RC.
  4. Aeration: Zoo- npuas diffused aeration siv tshuab tshuab.

  • SHT Reactor (Bio-kev sib cuag Oxidation): Lub Hom Phiaj: Ib theem nrab, siab- ua haujlwm aerobic theem. Nws ntxiv degrades cov organics ntxiv thiab ua cov nitrification, hloov cov tshuaj lom ammonia-nitrogen rau nitrate-nitrogen. Cov khoom siv biofilm ruaj khov muab cov ntsiab lus siab ntawm cov biomass txuas, ua rau lub cev ruaj khov thiab tiv taus cov khoom poob siab.
  1. Qhov siab: 180 m³
  2. HRT: 7 h.
  3. Kev tsim kho: steel qauv.
  4. Sab hauv Feature: Packed nrog semi{0}}soft biofilm media.
  5. Aeration: Zoo - npuas diffused aeration.

  • Aeration Equipment: Ob lub hauv paus tshuab tshuab ( qauv SSR125) muab cua rau ob qho tib si Aeration Tank thiab SHT Reactor.
  1. Configuration: Ib lub luag haujlwm, ib qho standby.
  2. Dej ntws: 10.17 m³ / min.
  3. Siab: 49 kPa.
  4. Lub Zog: 11 kW txhua.

4.3 Tertiary/Polishing kho

  • Dissolved Air Flotation (DAF) Unit: Lub Hom Phiaj: Txhawm rau tshem tawm cov khib nyiab zoo, cov khoom colloidal, thiab cov roj seem / cov rog uas dim kev kho mob lom. Ib coagulant (Polyaluminum Chloride - PAC) thiab flocculant (Polyacrylamide - PAM) yog dosed rau agglomerate particles, uas yog ces tshem tawm los ntawm adhering rau micro- cua npuas.
  1. Qauv: JH-30
  2. Peev xwm: 30-35 m³ / h.
  3. Kev tsim kho: Anti-corrosive steel.
  4. Tag nrho lub zog: 8.12 kW (rau lub twj tso kua mis, scraper, thiab lwm yam).

4.4 Sludge Handling System

  • Sludge Thickener: Lub Hom Phiaj: Txhawm rau mloog cov sludge los ntawm thawj qhov chaw nyob thiab DAF chav tsev, txo qhov ntim rau tom qab dewatering.
  1. Loj: 15 m³.
  2. Kev tsim kho: Saum - hauv av RC.

  • Sludge Dewatering: Lub lim xovxwm yog siv rau qhov kawg dewatering, ua ib lub ncuav mog qab zib rau pov tseg.
  1. Khoom siv: Phaj & Ncej Lim Xovxwm (Model: BM103/1000).
  2. Tag nrho cov hwj huam: 7.0 kW.
  3. Pub Pump: Progressive Cavity Pump (Model: I-1B-2), 5.4 m³ / h ntws, 80m taub hau, 3 kW fais fab (ib chav ua haujlwm).

 

5. Kev kho mob ua tau zoo thiab cov txiaj ntsig

Qhov kev ua tau zoo ntawm txhua chav kho mob, qhia txog kev tshem tawm cov pa phem, tau sau tseg hauvRooj1.Lub kaw lus tsis tu ncua ua tiav cov qauv tso tawm lub hom phiaj.

info-1000-425

Qhov tseem ceeb ua tiav:

  • Zuag qhia tag nrho COD Tshem Tawm: >90% (los ntawm 1,500 mg / L rau<150 mg/L).
  • Zuag qhia tag nrho BOD₅ Kev tshem tawm: >96% (los ntawm 800 mg / L rau<30 mg/L).
  • Roj & Roj Tshem Tawm: >70% (los ntawm 50 mg / L rau<15 mg/L).
  • SS tshem tawm: >85% (los ntawm 400 mg / L rau<150 mg/L).
  • Siv tau Nitrification: Lub SHT reactor ua tiav oxidized ammonia, ib kauj ruam tseem ceeb muab cov ntsiab lus nitrogen siab ntawm cov dej khib nyiab.

6. Txoj Haujlwm Kev Lag Luam

Tag nrho qhov project peev yog817,600 Suav Yuan (RMB), tawg raws li nram no:

  • Cov khoom siv & Kev teeb tsa
  • Civil Works (Tanks, Structures)
  • Txheej Txheem Tsim & Engineering

  • Commissioning & Startup Services

Qhov kev nqis peev no tau muab rau tus neeg siv khoom nrog kev ntseeg siab, ua raws, thiab ua haujlwm tswj tau cov dej khib nyiab kho, txo cov kev pheej hmoo ib puag ncig thiab ua kom muaj kev tswj hwm kev cai.

 

7. Cov ntsiab lus thiab cov lus qhia tau kawm

Qhov dej hiav txwv ua cov dej khib nyiab no yog ib qho piv txwv ua tiav ntawm kev siv cov txheej txheem tsim, ntau- theem los daws qhov teeb meem tshwj xeeb ntawm cov khoom siv hluav taws xob. Tus yuam sij rau kev vam meej yog tuskev sib xyaw ntawm technologies:

 

  1. Kev kho ua ntej - siv tau(kev tshuaj ntsuam, roj sib cais) tiv thaiv downstream biological units.
  2. Anaerobic hydrolysispreconditioned cov dej khib nyiab, txhim khu kev kho aerobic.
  3. Ob -theem aerobic kev kho mob(activated sludge + bio-hu oxidation) kom ruaj khov thiab ruaj khov organic thiab nitrogen tshem tawm.
  4. Thaum kawg polishing ntawm tshuaj DAFguaranteed raws li nruj SS thiab residual pollutant txwv.

 

Lub kaw lus ua kom pom kev ruaj khov, kev ua haujlwm yooj yim, thiab tus nqi -kev ua tau zoo rau nruab nrab- cov chaw ua zaub mov. Qhov kev tshawb fawb no yog ib qho tseem ceeb rau cov engineers thiab cov neeg saib xyuas cov nroj tsuag tsim los yog kev kho cov kab ke ua haujlwm zoo sib xws rau siab -cov dej khib nyiab organic los ntawm kev lag luam zaub mov thiab dej haus.