Qos yaj ywm pov tseg kev daws teeb meem
Raws li cov ntaub ntawv tshawb fawb txog kev lag luam tawm xyoo 2025, lub ntiaj teb kev lag luam loj ntawm qos yaj ywm hmoov nplej yog kwv yees li 15 billion US las hauv 2024, thiab xav tias yuav nce mus rau 22 billion US las los ntawm 2030, nrog rau kev loj hlob txhua xyoo (CAGR) ntawm 4.8% nyob rau lub sijhawm no.
Qos yaj ywm hmoov txhuv nplej siab, raws li lub ntuj tsim, muaj txiaj ntsig zoo, thiab cov hmoov txhuv nplej siab heev, yog siv dav hauv ntau yam kev lag luam xws li zaub mov, ntawv, textiles, thiab tshuaj. Nyob rau hauv xyoo tas los no, nrog rau kev nce ntawm kev noj qab haus huv sib piv thiab kev nce qib ntawm kev ua zaub mov, nws cov kev xav tau ntawm kev lag luam tau nce tsis tu ncua. Tebchaws Europe yog thaj chaw tsim khoom loj tshaj plaws hauv ntiaj teb, thaum Asia- thaj av Pacific, tshwj xeeb tshaj yog Tuam Tshoj, tau dhau los ua ib qho ntawm cov neeg siv khoom lag luam loj tshaj plaws.
I. Txheej txheem cej luam ntawm cov neeg muas zaub rau qos yaj ywm starch kho dej khib nyiab
Cov qos yaj ywm starch ua kev lag luam yog concentrated nyob rau hauv "peb sab qaum teb cheeb tsam" ntawm Tuam Tshoj (Northeast, Northwest, thiab North Tuam Tshoj), nrog rau txawv caij nyoog yam ntxwv. Nws feem ntau ua haujlwm txij lub Cuaj Hli mus txog Lub Ib Hlis tom qab. Cov txheej txheem no ua rau muaj cov dej khib nyiab loj heev, nrog rau cov ntsuas kev ua qias tuaj xws li tshuaj lom neeg cov pa oxygen xav tau (COD) txog 20,000–35,000 mg / L, biochemical oxygen xav tau (BOD) txog 9,000–12,000 mg / L, thiab tshem tawm cov khib nyiab (SS) siab li 00 mg / l. Hom dej khib nyiab no yog ib qho ntawm cov pa phem tshaj plaws hauv kev lag luam khoom noj.
Vim tias qhov kub tsis tshua muaj thiab luv luv, cov txheej txheem kev kho biochemical ib txwm siv rau kev ua haujlwm microbial yog qhov nyuaj rau kev pib thiab tswj, ua rau muaj kev kub ntxhov rau ntau lub lag luam thiab txawm tias muaj kev pheej hmoo ntawm kev kaw. Yog li ntawd, cov kev xav tau ntawm kev kho dej khib nyiab ntawm cov lag luam no tsis yog tsuas yog ua raws li cov qauv kev tso tawm xwb, tab sis kuj suav nrog kev tswj hwm tus nqi, kev pab cuam rov qab, thiab kev txhim kho kom ruaj khov.
Jinan Guangbo Environmental Protection tau tsim ib qho kev kho kom haum rau kev kho kom haum rau cov khib nyiab siab thiab siab COD cov yam ntxwv ntawm cov qos yaj ywm tsim cov dej khib nyiab. Nws muab cov kev sib tw tseem ceeb hauv kev siv thev naus laus zis, kev siv cov peev txheej, thiab tag nrho - cov kev pabcuam txheej txheem. Nws "pre-kev kho mob - anaerobic - aerobic" cov txheej txheem ua ke tuaj yeem daws qhov teeb meem ntawm cov dej khib nyiab acidification thiab ua tiav cov pa phem degradation los ntawm kev sib koom ua ke, nrog cov dej khov ruaj khov ua tau raws li cov qauv kev lag luam tawm ntawm cov hmoov txhuv nplej siab. Ntu anaerobic yog nruab nrog tus kheej -tsim UASB reactor, uas tsis tsuas yog muaj COD tshem tawm tus nqi zoo heev tab sis kuj tuaj yeem rov qab tau cov methane rau lub zog rov qab siv dua, txo cov nqi kho mob ntawm cov lag luam. Lub tuam txhab tseem muaj tus kheej -tsim tsim cov cuab yeej tseem ceeb, ntau tshaj 1,000 qhov kev ua haujlwm, thiab kev ua haujlwm ruaj khov muaj peev xwm txhim kho los ntawm cov kev tswj xyuas ntse. Nws tuaj yeem muab cov kev pabcuam sib koom ua ke los ntawm cov txheej txheem tsim, cov cuab yeej tsim khoom mus rau kev ua haujlwm thiab kev ua haujlwm, thiab tuaj yeem tiv taus cov dej tsis zoo thaum lub caij ua khoom noj, muab kev lag luam, muaj txiaj ntsig, thiab ruaj khov tag nrho rau cov qos yaj ywm ua lag luam.
Cov duab qhia txog kev tsim cov qos yaj ywm starch
II. Kev kho cov qos yaj ywm Starch Wastewater Wastewater Source
Qos yaj ywm starch zus tau tej cov dej- cov txheej txheem hnyav, yuav tsum tau kwv yees li 11 cubic meters ntawm cov dej rau kev ua txhua tuj qos yaj ywm, tsim ib tug loj npaum li cas ntawm cov dej khib nyiab nplua nuj nyob rau hauv cov organic teeb meem. Yog tias cov dej khib nyiab no tawm ncaj qha yam tsis muaj kev kho mob, cov organic teeb meem yuav haus cov pa oxygen hauv dej, ua rau dej eutrophication, kev tuag ntawm cov kab mob hauv dej, thiab tsim cov ntxhiab tsw phem uas ua rau ib puag ncig. Yog li ntawd, kev txheeb xyuas nws qhov chaw thiab muaj pes tsawg leeg yog qhov yuav tsum tau ua ua ntej rau kev tsim cov phiaj xwm kev kho mob zoo.
Raws li cov txheej txheem ntau lawm, cov qos yaj ywm starch khib nyiab feem ntau yog los ntawm cov theem hauv qab no:
1. Kev ntxuav cov dej khib nyiab: los ntawm cov txheej txheem rinsing ntawm cov qos yaj ywm nyoos, feem ntau muaj cov av, cov xuab zeb, cov hauv paus stems, nplooj, thiab cov qos yaj ywm me me, nrog cov ntsiab lus siab tshem tawm cov khib nyiab tab sis kuj muaj cov organic teeb meem tsawg.
2. Crushing thiab cais cov dej khib nyiab (protein wastewater / daj cawv): generated thaum sib tsoo, sieving, thiab centrifugal cais cov hmoov txhuv nplej siab, muaj ib tug loj npaum li cas ntawm soluble proteins, me me starch particles, cellulose, thiab suab thaj, yog lub ntsiab pa phem qhov chaw, accounting rau 10% -20% ntawm tag nrho cov dej khib nyiab loj thiab COD.
3. Starch ntxuav thiab refining cov dej khib nyiab: siv los ntxuav cov hmoov txhuv nplej siab slurry, uas muaj ib qho me me ntawm cov hmoov txhuv nplej siab thiab soluble organic teeb meem, nrog cov dej huv zoo dua piv rau ob theem dhau los, thiab qee qhov tuaj yeem rov ua dua.
4. Cov khoom siv thiab cov dej yaug hauv pem teb: cov dej los ntawm kev ntxuav cov khoom siv, cov kav dej, thiab cov chaw ua haujlwm tom qab tsim khoom, muaj cov hmoov txhuv nplej siab, cov kua protein, thiab cov tshuaj ntxuav tu, tso tawm tsis tu ncua, nrog cov dej tsis zoo.
Kev sib piv cov duab ntawm cov dej qias neeg thiab cov duab ntawm cov dej kho
III. Cov txheej txheem ntws los kho qos yaj ywm starch khib nyiab
Thaum lub sij hawm tsim cov qos yaj ywm hmoov txhuv nplej siab, siab - cov dej khib nyiab organic yog tsim, feem ntau yog los ntawm kev ntxuav, crushing thiab sib cais theem. Cov dej khib nyiab muaj ntau cov proteins, carbohydrates, cov khoom raug tshem tawm (SS), thiab cov tshuaj lom neeg cov pa oxygen (COD). Tus neeg muaj peev xwm COD tuaj yeem ncav cuag 10,000–20,000 mg / L.
Vim nws cov biodegradability zoo (nrog BOD / COD piv ntawm kwv yees li 0.7), nws tsim nyog rau txoj kev kho mob lom. Txawm li cas los xij, nws yog ib qho tsim nyog los muab cov kev siv lub cev thiab tshuaj lom neeg rau kev kho ua ntej - kev kho mob thaum pib txhawm rau txhawm rau ua haujlwm ruaj khov ntawm cov txheej txheem tom ntej.
Cov txheej txheem ntws rau kev kho cov qos yaj ywm hmoov txhuv nplej siab feem ntau yog ua ntej -kev kho mob, kev kho biochemical, thiab kev kho mob siab heev. Cov txheej txheem tshwj xeeb yog raws li hauv qab no:
1. Ua ntej-kev kho mob theem
Lub hom phiaj ntawm theem no yog tshem tawm cov khib nyiab pov tseg thiab tswj cov dej kom zoo thiab kom muaj nuj nqis los tiv thaiv cov cuab yeej tom ntej kom tsis txhob txhaws. Cov txheej txheem tseem ceeb suav nrog:
Sedimentation tank: Tshem tawm cov khoom tsis zoo xws li cov xuab zeb (qhov tseem ceeb rau cov qos yaj ywm hmoov txhuv nplej siab).
Equalization tank: Sib npaug dej zoo thiab kom muaj nuj nqis, thiab ntxiv aeration los tiv thaiv acidification.
Cua flotation tshuab: Siv cov huab cua ya raws (DAF) kom tshem tawm ntau dua 80% ntawm cov khib nyiab pov tseg thiab qee cov COD, haum rau siab - cov dej khib nyiab (xws li cov qos yaj ywm hmoov txhuv nplej siab).
2. Kev kho mob biochemical theem
Lub hom phiaj ntawm theem no yog kom degrade cov organic teeb meem thiab ua tiav ib txhij tshem tawm ntawm nitrogen thiab phosphorus. Cov txheej txheem tseem ceeb suav nrog:
Kev kho anaerobic: IC reactor yog tsim rau siab -cov dej khib nyiab, nrog lub ntim ntim ntawm 15 kg COD / (m³·d), thiab muaj zog poob siab. Cov ntsiab lus tseem ceeb: pH tswj ntawm 6.8-7.5, kub 35-38, carbon-nitrogen piv (COD:N:P=200:5:1).
Aerobic kev kho mob: SBR txheej txheem (sequencing batch reactor), haum rau scenarios nrog fluctuating dej ntim, ua tiav nitrification thiab denitrification los ntawm lub sij hawm ua ntu zus tswj.
3. Kev kho mob qib siab
Lub hom phiaj ntawm theem no yog txhawm rau tshem tawm cov khib nyiab ntxiv, cov khoom organic, thiab cov kab mob pathogenic kom ua tau raws li kev rov siv dua lossis cov qauv tso tawm nruj. Cov txheej txheem tseem ceeb suav nrog:
Coagulation sedimentation: Ntxiv PAC / PAM kom tshem tawm cov khoom seem uas raug tshem tawm thiab cov tshuaj colloidal.
Sand filtration/carbon filtration: Lim tawm cov khoom me me kom txo qis turbidity.
Advanced oxidation: Ozonation los yog Fenton reagent kho rau nyuaj -kom-degrade organic tshuaj, nrog rau COD tshem tawm tus nqi ntau dua los yog sib npaug rau 60%.
Muaj peev xwm nruab nrog ib daim ntawv qhia kev kho dej phwj tuaj
Muaj dej khib nyiab → Grit chamber → Equalization tank → Coagulation thiab flotation → Anaerobic biochemical kev kho → Aerobic biochemical kev kho → Advanced kho → Tshem tawm los yog rov qab siv dua
IV. Tshwj xeeb Case Study of Potato Starch Wastewater Treatment
Xinjiang Wenying Qos Industry Co., Ltd. Potato Project
I. Project Overview:
Project Name: Qos yaj ywm Project ntawm Xinjiang Wenying Qos Industry Co., Ltd.
Cov dej khib nyiab: Lub chaw kho dej khib nyiab yog tsim nrog lub peev xwm ntawm 1000 m3 / d.
II. Txoj Haujlwm Taw Qhia:
Cov dej khib nyiab ntim ntawm qhov project no yog 1000 m3 / d. Raws li cov kev cai ntawm Xinjiang Wenying Qos Kev Lag Luam, kev kho dej khib nyiab yuav tsum tau ua raws li qhov yuav tsum tau ua ntawm "Comprehensive Wastewater Discharge Standard" (GB8978-1996) nyob rau theem peb, thiab tseem ua tau raws li "Agricultural Irrigation Water Quality Standard". Txhawm rau kom siv tau zoo dua siv cov khoom siv hluav taws xob zoo, Guangbo Environmental Protection yuav siv "kev kho dej khib nyiab + organic chiv + cog ntsuab" qauv, tsim lub "terminal + puag" rov ua dua thiab siv qhov system. Tsis tsuas yog nws yuav ua tiav xoom paug paug tawm ntawm cov dej khib nyiab, tab sis kuj tseem tshuav cov organic teeb meem hauv cov dej khib nyiab kho yuav rov siv dua rau cov dej hauv cov zaub hauv paus, yog li ua tiav kev sib xyaw ntawm kev siv dej khib nyiab thiab kev lag luam ua liaj ua teb, txo cov tshuaj chiv zoo. Nws tuaj yeem hais tias tig pov tseg rau hauv cov khoom muaj nqis.
III. Kev phom sij ntawm Cov Khoom Noj Khoom Noj Khoom Haus Dej:
Cov khoom siv raw ntawm kev lag luam khoom noj muaj ntau yam, thiab cov dej khib nyiab ntim thiab qhov zoo sib txawv. Cov pa phem tseem ceeb yog ntau, nrog rau cov khoom siv xws li zaub nplooj, txiv hmab txiv ntoo, thiab cov nqaij minced hauv cov dej khib nyiab, nrog rau cov khoom xws li roj, protein, thiab hmoov, thiab acids, ntsev, thiab lwm yam impurities sib xyaws.
IV. Taw qhia ntawm Guangbo Environmental Protection:
Guangbo Environmental Protection Company - lub tuam txhab kho dej khib nyiab, muaj kev paub nplua nuj hauv kev kho cov dej khib nyiab ntau xyoo, thiab kev nkag siab zoo ntawm IC anaerobic reactor siab heev. Starch wastewater yeej muaj cov pa phem rau ib puag ncig, thiab los ntawm cov txheej txheem dej khib nyiab, peb tau txiav txim siab tias cov hmoov txhuv nplej siab tuaj yeem yog ib feem ntawm cov txiaj ntsig tsim khoom. Zoo siab txais tos cov lag luam nrog cov hmoov txhuv nplej siab kho dej tiv tauj peb.
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 txheej txheem yog cov 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 soj ntsuam thiab kev soj ntsuam cov dej zoo ntawm cov hmoov txhuv nplej siab thiab cov dej xa tawm, tom qab kev sib piv cov txheej txheem thiab kev lag luam ntawm cov txheej txheem kho cov hmoov txhuv nplej siab cov dej khib nyiab, GBIC anaerobic reactor (upflow anaerobic sludge txaj) + kev sib cuag oxidation txheej txheem tau xaiv los ua cov txheej txheem tseem ceeb rau kev kho dej khib nyiab; Cov hmoov txhuv nplej siab yog cov dej khib nyiab biochemical zoo, nrog COD siab. 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 tas li rau 3 xyoos. Cov dej ntws tawm tau ua tau raws li thawj - theem kev tso tawm tus qauv tau teev tseg hauv "Integrated Wastewater Discharge Standard" (GB8978-1996) ntawm Tuam Tshoj tam sim no. Ntxiv mus, los ntawm cov txheej txheem ntawm cov hmoov txhuv nplej siab cov dej khib nyiab, cov granular sludge thiab biogas tsim tau tsim qee cov txiaj ntsig.
