Pob kws hmoov txhuv nplej siab kho dej khib nyiab
Tuam Tshoj twb yog ib tug tseem ceeb quab yuam nyob rau hauv lub ntiaj teb no pob kws starch kev lag luam, accounting rau 41.7% ntawm lub ntiaj teb no ntau lawm nyob rau hauv 2023, nrog tag nrho cov zis ntau tshaj 200 billion yuan. Ua ke nrog cov ntaub ntawv kev lag luam derivative, lub ntiaj teb kev lag luam loj rau pob kws hmoov txhuv nplej siab thiab cov khoom muaj feem xyuam yuav tsum nyob ib ncig ntawm 500 billion yuan, thiab nws yuav tsis tu ncua loj hlob ntawm tus nqi kwv yees li 5% ib xyoos twg. Ntawm lawv, bio- cov ntaub ntawv raws li yuav dhau los ua lub cav loj hlob.
I. Txheej txheem cej luam ntawm cov neeg muas zaub rau pob kws Starch Wastewater Treatment
Thaum lub sij hawm tsim cov pob kws hmoov txhuv nplej siab, ntau qhov siab - cov dej khib nyiab organic yog tsim los ntawm cov txheej txheem xws li soaking, cais cov kab mob, thiab ntxuav fiber ntau. Yog tias cov dej khib nyiab no tawm ncaj qha yam tsis muaj kev kho mob, nws yuav ua rau cov pa oxygen yaj hauv cov dej hauv lub cev thiab ua rau ib puag ncig puas tsuaj. Yog li ntawd, kev tiv thaiv ib puag ncig nyob rau hauv ntau lub teb chaws xav kom cov tuam txhab tsim cov kev kho mob zoo. Nrog rau cov cai nruj dua ib puag ncig thiab kev paub txog kev txhim kho kom ruaj khov, cov pob kws cov hmoov txhuv nplej siab tau dhau los ua cov neeg siv khoom tseem ceeb rau cov khoom siv kho dej khib nyiab thiab kev pabcuam.
Jinan Guangbo Environmental Technology Co., Ltd. tau kho qhov kev txhim kho ua ntej -kev kho mob + kev ua haujlwm zoo anaerobic + SBR aerobic ua ke rau cov txheej txheem siab COD, kev hloov pauv siab, thiab inhibitor-muaj cov yam ntxwv ntawm pob kws hmoov txhuv nplej siab. Tag nrho COD tshem tawm tus nqi siab tshaj 99%, thiab cov dej ntws tawm ruaj khov thiab ua tau raws li cov qauv thiab tuaj yeem rov qab siv dua. Tus kheej-tsim anaerobic reactor muaj zog tiv thaiv- kev poob siab thiab tuaj yeem decompose sulfate inhibition, ib txhij rov qab biogas rau lub zog muab + ua ntej- kho kom rov qab cog cov protein, ua tiav cov peev txheej kaw thiab txo tus nqi ib tuj dej. Nws muaj cov cuab yeej tseem ceeb ntawm tus kheej- kev tshawb fawb thiab kev tsim khoom muaj peev xwm thiab kev tsim vaj tsev nplua nuj, muab kev tsim qauv - kev tsim khoom - commissioning - kev ua haujlwm ua haujlwm ua ke cov kev pabcuam, thiab tsim nyog rau kev hloov pauv dej thiab dej khib nyiab thaum lub sijhawm ua haujlwm siab tshaj plaws.
Cov duab qhia txog kev tsim cov pob kws hmoov nplej
II. Kev kho pob kws Starch Wastewater Wastewater Source
Kev tsim cov hmoov nplej pob kws yog cov dej ib txwm siv -kev lag luam hnyav. Rau txhua 1 tuj ntawm pob kws ua tiav, 5-13 m³ ntawm cov dej khib nyiab yog tsim. Yog tias cov dej khib nyiab no tso tawm ncaj qha yam tsis muaj kev kho mob, vim muaj cov ntsiab lus siab ntawm cov organic teeb meem, nws yuav ua rau cov pa oxygen yaj hauv lub cev sai sai, ua rau cov ntses suffocation thiab ua rau cov dej dub thiab qias neeg, ua rau muaj kev puas tsuaj loj rau ecological ib puag ncig. Yog li ntawd, kev txheeb xyuas qhov chaw ntawm cov dej khib nyiab yog qhov yuav tsum tau ua ua ntej rau kev tsim cov phiaj xwm kho kom zoo.
Raws li cov txheej txheem ntau lawm, cov pob kws hmoov txhuv nplej siab cov dej khib nyiab tsuas yog los ntawm cov theem tseem ceeb hauv qab no:
1. Pob kws soaking: Siv sulfurous acid tov kom soften cov pob kws, cov dej soluble muaj soluble proteins, suab thaj, organic acids, thiab sulfites, nrog ib tug heev COD concentration (txog 50,000-80,000 mg/L), uas belongs rau high -concentration txheej txheem dej khib nyiab.
2. Kev sib cais ntawm cov kab mob thiab ntxuav: Thaum lub sij hawm tshem tawm cov kab mob pob kws, cov dej yaug yog nqa cov khoom zoo thiab cov organic teeb meem, ua rau nruab nrab mus rau siab -cov dej khib nyiab.
3. Kev ntxuav fiber ntau: Thaum tshem tawm cov hmoov txhuv nplej siab los ntawm cov pob kws residue, cov dej yaug ntau yog tawm, muaj cov cellulose, cov hmoov txhuv nplej siab, thiab lwm yam tshuaj raug tshem tawm.
4. Protein filtration thiab flotation concentration: Cov kua dej los ntawm cov txheej txheem ntawm cov pob kws rov qab los yog hu ua "cov dej protein", muaj cov ntim loj thiab cov protein ntau, nrog rau COD ntawm kwv yees li 4,000–8,000 mg / L.
5. Cov khoom siv thiab cov dej yaug hauv pem teb: suav nrog kev ntxuav cov crushers, cov khoom sib cais, cov kav dej, thiab lwm yam, nrog rau hauv pem teb rinsing nyob rau hauv lub rhiav, txawm hais tias cov concentration yog tsawg, tag nrho cov nyiaj yuav tsis raug ignored.
6. Evaporation condensate: Qee lub lag luam evaporate thiab mloog cov pob kws slurry los tsim cov pob kws slurry khoom. Cov txheej txheem no tsim cov dej condensate, uas tseem tsim cov kwj ntawm cov dej khib nyiab, nrog COD feem ntau qis dua 1,000-2,000 mg / L.
Kev sib piv ntawm cov duab qhia cov dej qias neeg thiab cov duab qhia cov dej kho
III. Txheej Txheem Flow rau Kho Pob Kws Starch Wastewater
Thaum lub sij hawm tsim cov pob kws starch, ib tug loj npaum li cas ntawm cov concentrated organic wastewater yog generated, feem ntau yog los ntawm cov txheej txheem xws li pob kws soaking, kab mob sib cais, fiber ntau ntxuav, thiab protein filtration. Hom dej khib nyiab no muaj cov yam ntxwv hauv qab no:
High organic teeb meem concentration; muaj cov ntsiab lus siab ntawm ammonia nitrogen, tag nrho nitrogen, thiab tag nrho phosphorus; muaj biodegradability zoo thiab haum rau kev kho mob lom; Cov ntsiab lus siab ntawm suspended solids (SS).
Vim lub siab concentration ntawm cov pa phem thiab cov ntim loj ntawm cov dej, yog tias tsis kho kom zoo, nws yuav ua rau cov dej hauv lub cev ecology loj heev. Yog li ntawd, yuav tsum muaj ntau yam -theem kev sib koom tes kom ua tiav kev ua kom huv huv.
1. Ua ntej-theem kho: Tshem tawm cov khib nyiab pov tseg thiab hloov dej zoo
Cov theem no feem ntau tshem tawm cov khib nyiab loj (xws li cov hmoov txhuv nplej siab thiab cov protein seem) hauv cov dej khib nyiab los ntawm kev siv lub cev thiab tshuaj los tiv thaiv kev thaiv cov khoom siv tom ntej thiab txhim kho kev ua haujlwm zoo.
Grate filtration: Tshem tawm cov khoom loj.
Settling / aerated flotation: Kev sib cais ntawm cov khib nyiab zoo uas siv lub ntiajteb txawj nqus sedimentation lossis yaj huab cua flotation tshuab.
Equalization tank: Sib npaug dej zoo thiab kom muaj nuj nqis, pab txhawb kev ua haujlwm ruaj khov tom qab.
Kev hloov pH: Txij li cov dej nyoos yog acidic, cov tshuaj alkaline tau ntxiv los kho cov pH mus rau nruab nrab lossis me ntsis alkaline, uas yog qhov zoo rau kev loj hlob ntawm cov kab mob anaerobic.
2. Kev kho kab mob anaerobic: Kev degradation zoo ntawm cov organic teeb meem thiab tsim cov biogas
Qhov no yog cov txheej txheem tseem ceeb, siv cov kab mob anaerobic txhawm rau txhawm rau loj - cov khoom siv hauv cov methane thiab carbon dioxide, txo cov COD load, thiab rov ua kom lub zog.
Cov txheej txheem tseem ceeb suav nrog:
UASB (Upflow Anaerobic Sludge Bed): Feem ntau siv, nrog COD tshem tawm tus nqi txog li 70% -90%;
IC (Internal Circulation Anaerobic Reactor) los yog EGSB (Expanded Granular Sludge Bed): Tsim nyog rau cov dej khib nyiab ntau dua, muaj zog poob siab.
3. Kev kho mob Aerobic: Kev tshem tawm ntxiv ntawm cov organic residual thiab tshem tawm nitrogen
Lub anaerobic effluent tseem muaj qee cov organic teeb meem thiab ammonia nitrogen, uas yuav tsum tau ua kom huv ntxiv los ntawm cov txheej txheem aerobic.
Cov txheej txheem muaj xws li:
A/O txoj kev (Anoxic{0}}Oxic): Ua tiav denitrification thiab tshem tawm nitrogen;
SBR (Sequential Batch Reactor): Kev ua haujlwm yooj yim, yoog raws cov khoom hloov pauv;
Oxidation ditch + Secondary sedimentation tank: Cov qauv yooj yim, kho yooj yim.
4. Kev kho kom sib sib zog nqus: xyuas kom cov dej ntws tawm raws li cov qauv lossis tsim nyog rau rov siv dua
Txhawm rau txhim kho qhov zoo ntawm cov effluent, tshwj xeeb tshaj yog rau kev rov siv dua, kev kho mob tob yog tsim nyog.
Coagulation thiab sedimentation: Ntxiv flocculants xws li PAC (polyaluminum chloride) kom tshem tawm cov seem ntawm cov colloids thiab phosphates.
Membrane sib cais tshuab: Ultrafiltration (UF) + Rov qab Osmosis (RO): Siv rau cov dej rov qab siv dua, nrog cov desalination siab.
Cov pa roj carbon activated adsorption: Tshem tawm cov xim thiab cov kab uas tsis yog - biodegradable organic tshuaj.
5. Kev kho sludge thiab kev siv peev txheej
Cov sludge generated ntawm txhua theem yog concentrated thiab lub cev qhuav dej ua ntej yuav raug thauj mus pov tseg. Cov dej noo tuaj yeem raug txo los ntawm 99% mus rau qis dua 80%. Qee lub tuam txhab kuj hloov cov sludge rau hauv cov chiv lossis cov khoom pub rau kev siv dav.
Muaj peev xwm nruab nrog ib daim ntawv qhia kev kho dej phwj tuaj
Cov dej khib nyiab → Bar Screen Zoo → Coagulation thiab Flotation → Equalization Tank → Anaerobic Biochemical Treatment → Aerobic Biochemical Treatment → Advanced Treatment → Discharge lossis Reuse
IV. Kev Kawm Tshwj Xeeb ntawm Pob Kws Starch Wastewater Treatment
Muab cov ntaub ntawv no ua ke nrog cov duab thiab cov ntawv nyeem.
Shandong Baisheng Starch Kev Kho Dej Chaw Nres Tsheb - Kev Ua Haujlwm Kev Kho Cov Dej Num Starch
I. Project Overview:
Lub Npe Lub Npe: Kev Tshawb Fawb Kev Tshawb Fawb Kev Tshawb Fawb Hauv Shandong Baisheng
Cov dej khib nyiab: Lub chaw kho dej khib nyiab yog tsim los nrog lub peev xwm ntawm 3000 m³ / d
Kev xaiv txheej txheem: GBIC anaerobic reactor (upflow anaerobic sludge txaj) + kev sib cuag oxidation txheej txheem yog txheej txheem tseem ceeb rau kev kho dej khib nyiab
II. Tuam Txhab Txheej Txheem:
Shandong Baisheng Starch Chaw Kho Dej Kho Dej. Peb tau koom nrog kev tsim kho ntawm peb theem:
Theem 1: Kev kho dua tshiab ntawm peb IC anaerobic reactors. Qhov tshwm sim yog: IC anaerobic reactors ntawm qhov chaw kho dej khib nyiab no yog rau sludge replenishment txhua xyoo. Tom qab kev kho dua tshiab, txhua hli tsim cov sludge yog kwv yees li 200 tons, ua tiav cov txiaj ntsig.
Theem 2: Kev kho dua tshiab ntawm cov khoom siv aerobic aging aeration, hloov cov khoom qub microporous aeration nrog lub neej ntev - thiab yooj yim - los hloov vortex aeration device.
Theem 3: Nitrogen thiab phosphorus kho dua tshiab ntawm qhov chaw dej khib nyiab. Qhov tsis xws luag hauv kev tsim ntawm lub tuam txhab tiv thaiv ib puag ncig yav dhau los rau kev tshem tawm cov tshuaj no tau raug kho.
III. Kev Taw Qhia Txog Kev Kho Dej Wastewater:
Commissioned los ntawm BaiSheng hmoov txhuv nplej siab cov dej khib nyiab kho qhov project, Guangbo Environmental Protection Wastewater Treatment Company tau ua lub tswv yim tsim thiab kev tsim kho cov hmoov txhuv nplej siab cov dej khib nyiab no. Raws li kev txheeb xyuas thiab kev kwv yees ntawm cov dej ntim thiab qhov zoo, cov chaw kho dej khib nyiab tau tsim nrog lub peev xwm ntawm 3000 m³ / d.
Raws li kev txheeb xyuas thiab kev soj ntsuam cov dej zoo ntawm cov hmoov txhuv nplej siab thiab cov dej xa tawm, tom qab sib piv cov txuj ci thiab kev lag luam ntawm cov txheej txheem kho rau cov hmoov txhuv nplej siab cov dej khib nyiab, GBIC anaerobic reactor (upflow anaerobic sludge txaj) + hu rau oxidation txheej txheem txheej txheem raug xaiv los ua cov txheej txheem tseem ceeb rau kev kho dej khib nyiab; Cov dej khib nyiab hmoov txhuv nplej siab yog cov dej khib nyiab uas muaj biodegradability zoo, thiab nws cov COD yog siab heev. Los ntawm peb lub tuam txhab GIBC, ntau cov sludge granular (granular sludge tuaj yeem muag sab nraud) thiab ntau cov biogas (uas tuaj yeem siv rau boiler combustion thiab biogas fais fab tuag) tuaj yeem tsim tau, qhov pib ua tiav xoom - nqi ua haujlwm ntawm cov hmoov txhuv nplej siab.
IV. Environmental Compliance:
Tom qab ua tiav qhov chaw nres tsheb dej khib nyiab, nws tau ua haujlwm tsis tu ncua rau 3 xyoos. Cov dej ntws tau ua tau raws li thawj - theem kev tso tawm tus qauv tau teev tseg nyob rau hauv tam sim no "Sewage Comprehensive Discharge Standard" (GB8978-1996) ntawm Tuam Tshoj, thiab ib feem ntawm cov txiaj ntsig tau tsim los ntawm kev siv granular sludge thiab biogas ua thaum lub sij hawm cov hmoov txhuv nplej siab.
