Kev tshuaj xyuas ntawm Cov Teeb Meem Dej Ntsuab hauv Saudi Arabian RAS Aquaculture Systems & Solutions
Peb ua kev zoo siab rau qhov kev pib ua tiav ntawm kev tsim biofilm hauv koj qhov MBBR system-qhov no yog qhov tseem ceeb hauv kev tsim cov txheej txheem kev kho mob lom neeg. Qhov teeb meem ntawm cov kua dej ntsuab tom qab MBBR lub tank yog ib qho kev sib tw tseem tsis tau daws tau hauv kev lag luam aquaculture thiab dej kho kev lag luam. Tsab ntawv xov xwm no yuav muab cov ncauj lus kom ntxaws txog qhov ua rau, ntsuas qhov muaj feem cuam tshuam, thiab tawm tswv yim txog kev daws teeb meem raws li Saudi Arabia cov xwm txheej huab cua.
Ua tsaug rau Saudi cov neeg siv khoom rau lub tank pics.
Ⅰ. Lub hauv paus ua rau dej ntsuab: Algal Blooms
Cov xim ntsuab ntawm cov effluent yog undoubtedly vim muaj coob tus phytoplankton (feem ntau unicellular ntsuab algae). Ib qho algal Bloom yuav tsum muaj peb yam tseem ceeb:
Lub hnub ci loj (Illumination):
Lub cheeb tsam Saudi nyiam ntau lub hnub ci, uas yog lub zog tseem ceeb rau algal photosynthesis. Yog tias koj lub tank MBBR los yog tom qab qhov chaw nyob / cia tso tsheb hlau luam yog uncovered lossis raug rau lub teeb ncaj qha, qhov no muab qhov chaw zoo tshaj plaws rau kev loj hlob ntawm algae.
Cov khoom noj muaj nplua nuj:
Aquaculture dej khib nyiab muaj ntau cov nitrogen (N) (xws li ammonia, nitrite, thiab nitrate) thiab phosphorus (P)-tseem ceeb "khoom noj" rau algae. Txoj kev ua tiav biofilm hauv koj qhov MBBR system qhia tau hais tias cov kab mob nitrifying tau pib hloov cov tshuaj lom ammonia (NH₃-N) rau hauv nitrite tsawg (NO₂⁻) thiab ntxiv mus rau hauvNitrate (NO ₃⁻).
Ntsiab Lus: Lub luag haujlwm tseem ceeb ntawm MBBR yognitrification(tshem tawm ntawm ammonia), tsis yogdenitrification(tshem tawm nitrate). Nitrate yog ib qho ntawm cov nyiam tshaj plaws nitrogen qhov chaw rau algae. Yog li, cov dej ntws los ntawm MBBR tuaj yeem muaj cov nitrate siab, muab cov as-ham zoo rau algae.
Haum dej kub thiab pH:
Saudi Arabia cov kev nyab xeeb huab cua (dej kub thiab me ntsis alkaline pH) kuj zoo heev rau kev loj hlob algal sai.
Hauv cov ntsiab lus: Lub xeev tam sim no ntawm koj lub cev yog MBBR zoo tshem tawm ammonia thiab tsim nitrate, tab sis cov theem tom ntej yog raug tshav ntuj ncaj qha, ua rau algal blooms. MBBR nws tus kheej muaj peev xwm txwv tsis pub siv cov algae- nws txoj haujlwm tseem ceeb yog kho cov organic teeb meem biodegradable thiab ammonia.
Ⅱ. Muaj peev xwm txaus ntshai ntawm Green Effluent: Ntau tshaj qhov teeb meem zoo nkauj
Txawm hais tias cov dej ntsuab me ntsis qee zaum suav tias yog "dej muaj txiaj ntsig" hauv kev ua liaj ua teb ib txwm muaj, nws ua rau muaj kev pheej hmoo ntau hauv kev rov ua dua lossis siab dua -cov kab dej hauv av:
Kev hloov pauv ntawm cov pa hluav taws xob ntau (DO):
Thaum nruab hnub, algal photosynthesis tsim cov pa oxygen, uas ua rau DO supersaturation. Thaum tsaus ntuj, algal ua pa siv cov pa ntau ntau, ua rau muaj kev pheej hmoo ntawm hypoxia rau cov ntses thaum sawv ntxov- qhov xwm txheej txaus ntshai heev.
Dej tsis ruaj tsis khov:
Kev ua algal ua rau diurnal pH hloov pauv, tsim kev ntxhov siab rau ntses.
Teeb meem Clogging:
Algal hlwb tuaj yeem txhaws cov khoom siv tom ntej (xws li lub nruas lim) thiab ua rau cov ntses ua liaj ua teb puas tsuaj.
Algal Toxins:
Qee hom algae (piv txwv li, cyanobacteria) tso co toxins thaum lawv tuag, ua phem rau ntses noj qab haus huv.
Qhov taw qhia qhov tseem ceeb:
Cov dej ntsuab qhia txog kev sib sau ntawm cov as-ham (tshwj xeeb yog nitrate) hauv dej, uas tuaj yeem ua rau muaj kev phom sij rau cov dej hauv dej hauv lub sijhawm.
Ⅲ. Qhov cuam tshuam ntawm MBBR Media Kev nqis peev ntxiv ntawm Green Effluent
Qhov no yog ib lub tswv yim zoo, tab sis nws yog ib qho tseem ceeb kom nkag siab zoo txog nws cov txiaj ntsig thiab kev txwv.
Kev cuam tshuam zoo:
Txhim kho qhov kev kho mob muaj peev xwm:
Ua kom MBBR media ntim nthuav dav thaj chaw biofilm, txhim kho lub peev xwm thiab kev ruaj ntseg hauv kev kho ammonia thiab organic teeb meem. Qhov no pab tiv thaiv lub cev tsis ua haujlwm vim muaj kev poob siab thiab yog qhov tseem ceeb rau kev ua kom cov dej hauv dej.
Indirect cuam tshuam rau Algae:
Kev tshem tawm ntau dua ntawm cov organic teeb meem thiab ammonia txo cov khoom noj khoom haus tag nrho muaj rau kev loj hlob algae nyob rau lub sijhawm ntev.
Kev txwv:
Tsis Ncaj Ncees Tshem Tawm Algae:
Cov kab mob hauv MBBR biofilm tsis tuaj yeem siv ncaj qha lossis tshem tawm cov algal uas twb muaj lawm.
Tsis Muaj Peev Xwm Tshem Tawm Nitrate:
Raws li tau hais ua ntej, tus txheej txheem MBBR tus qauv tsis suav nrog denitrification thiab yog li tsis muaj txiaj ntsig ntawm kev tshem tawm nitrate- cov khoom noj tseem ceeb rau algae.
Tsis Thaiv Hnub Ci:
Ntxiv MBBR xov xwm ntau dua tsis hais txog qhov teeb meem ntawm kev raug tshav ntuj.
Xaus:
Txuas ntxiv mus nqis peev hauv MBBR media yog qhov tseeb thiab tsim nyog. Nws ntxiv dag zog rau lub hauv paus kev kho mob lom neeg muaj peev xwm thiab nteg lub hauv paus ruaj khov rau kev hais txog algae -txog cov teeb meem nyob rau theem tom ntej. Txawm li cas los xij, nws tsis tuaj yeem daws qhov teeb meem tam sim no ntawm cov dej ntsuab ntsuab thiab yuav tsum tau ua ke nrog lwm yam kev ntsuas.
Ⅳ. Kev daws teeb meem: Plaub -Pronged Technical Roadmap
Peb pom zoo kom siv cov kauj ruam-los ntawm- kauj ruam, kev daws teeb meem, pib nrog qhov yooj yim tshaj plaws thiab tus nqi ntau tshaj- txoj hauv kev zoo:
Theem 1: Kev cuam tshuam lub cev (Kev Ua Tam Sim No, Cov txiaj ntsig tam sim)
Ntsuas: Tam sim ntawd ntxoov ntxoo tag nrho cov tso tsheb hlau luam tom qab MBBR tank (seadimentation tank, dej ntshiab tank, cia tank)!
Cov txheej txheem: Siv cov ntaub npog dub, PVC panels, ua npuas ncauj, los yog nruab npog. Qhov no yog txoj kev ceev tshaj plaws thiab kev lag luam tshaj plaws.
nyhuv: Tam sim ntawd txiav tawm lub zog rau algae. Cov algae uas twb muaj lawm yuav maj mam tuag thiab nyob hauv ib hnub, txhim kho dej kom meej.
Qib 2: Kev Txhim Kho Cov Txheej Txheem (Kev daws teeb meem rau Nutrient Pollution)
Ntsuas: Qhia txog cov txheej txheem denitrification (nitrogen tshem tawm).
Kev xaiv:
Anoxic Tank Solution: Tsim kom muaj lub tank anoxic tom qab MBBR aerobic tank (tsis xav tau aeration tab sis maj mam sib xyaw). Direct MBBR effluent rau hauv lub tank no thiab ntxiv ib qhov chaw carbon (xws li, methanol, sodium acetate, los yog organic teeb meem los ntawm cov dej nyoos). Ntawm no, cov kab mob denitrifying hloov nitrate (NO₃⁻) rau hauv cov pa roj nitrogen (N₂), uas khiav mus rau hauv qhov chaw, tshem tawm cov khoom noj nitrogen rau algae.
Integrated MBBR Solution: Xwb, tsim ib qho chaw anoxic nyob rau hauv lub tank MBBR uas twb muaj lawm (los ntawm kev tswj aeration), txawm tias txoj kev no yuav tsum tau ua haujlwm ntau dua.
nyhuv: Qhov no yog cov thev naus laus zis tseem ceeb rau kev ua tiav ntev - cov qauv dej ruaj khov thiab tiv thaiv algal blooms ntawm qhov chaw.
Theem 3: Xaus- ntawm- Kev Kho Kab (Tsev kom muaj txiaj ntsig zoo kawg nkaus)
Ntsuas: Nruab ib lub sterilizer ultraviolet (UV Sterilizer) thiab/los yog lub nruas lim.
nyhuv:
UV Sterilizer: Tam sim no rhuav tshem DNA ntawm algae, kab mob, thiab kab mob hauv dej, ua rau lawv tsis muaj zog thiab tsis tuaj yeem tsim dua tshiab. Nws yog qhov kev txwv qhov kawg rau kev ua kom muaj dej lom neeg zoo.
Nruas Lim: Cov cuab yeej siv tshuab lim uas lub cev tshem tawm cov algal feem ntau thiab cov khoom raug tshem tawm (feem ntau ntau dua lossis sib npaug li 60 microns), ua kom lub cev pom tseeb ntawm cov dej ntws tawm.
Kev pom zoo: Rau aquaculture systems, peb xav kom sib txuas lub nruas lim nrog UV sterilizer. Ua ke, lawv muab kev tiv thaiv zoo tshaj plaws.
Theem 4: Pab Kev Ntsuas thiab Kev Saib Xyuas
Ceev faj siv Algaecides: Cov tshuaj xws li tooj liab sulfate tuaj yeem siv tau ib ntus thaum muaj xwm txheej ceev tab sis tsis pom zoo rau kev siv tsis tu ncua. Cov algae tuag haus oxygen thaum lub sij hawm decomposition thiab tej zaum yuav tso co toxins.
Txhim khu kev soj ntsuam: Siv lub tshuab ntsuas dej niaj hnub rau qhov tseem ceeb: ammonia, nitrite, nitrate, phosphate, COD, DO, thiab pH. Cov ntaub ntawv yog tib lub hauv paus rau kev soj ntsuam kev ua haujlwm ntawm qhov system thiab kho cov haujlwm ua haujlwm.
Summary and Action Plan
Kev Ua Tam Sim No: Tsaus lub tank! Ntxig lub tank! Ntxig lub tank! Qhov no yog qhov ntsuas ceev tshaj plaws kom pom cov txiaj ntsig.
Kev ua kom ruaj khov: Txuas ntxiv ntxiv MBBR media raws li tau npaj tseg. Koj tau txiav txim siab yog lawm-qhov no yog kev nqis peev hauv lub neej yav tom ntej.
Nruab nrab -Kev Npaj Lub Sij Hawm: Pib tsim thiab npaj lub tank anoxic denitrification. Qhov no yog qhov kev daws teeb meem raudaws tagteeb meem nitrate.
Txhim kho kho vajtse: suav nrog lub nruas lim thiab UV sterilizers hauv koj qhov kev npaj yuav khoom raws li qhov kawg "polishing" thiab tiv thaiv chav rau kev kho dej.
Qhov teeb meem uas koj tab tom ntsib yog ib qho teeb meem ntawm kev tsim vaj tse uas yuav tsum tau ua kom zoo dua qub thiab hloov khoom siv. So assured, nws yog tag nrho solvable. Peb cia siab tias qhov kev ntsuam xyuas ntxaws no muab kev qhia meej rau koj thiab kev ntseeg siab.
Thov koj xav tiv tauj rauJuntai teamthaum twg los tau. Peb npaj txhij los muab kev txhawb nqa ntxiv, suav nrog cov qauv tsim rau denitrification tso tsheb hlau luam thiab cov lus pom zoo xaiv cov khoom siv.