Kev siv MBBR hauv Recirculating Aquaculture Systems (RAS)
Nyob rau hauv txoj kev loj hlob ntawm intensive aquaculture, qhov nrov ntawm Recirculating Aquaculture Systems (RAS) tau zoo heev txhim kho kev siv dej. Raws li qhov tseem ceeb ntawm kev kho dej hauv RAS, Moving Bed Biofilm Reactor (MBBR) yog ib qho khoom siv tseem ceeb rau kev daws cov pa phem nitrogen thiab tswj cov dej kom ruaj khov, ua tsaug rau nws qhov siab -kev ua kom huv huv thiab muaj zog yoog raws.
Nws tuaj yeem hloov pauv cov tshuaj lom nitrogen- muaj cov tshuaj sib txuas los ntawm kev ua microbial, tswj cov dej tsis zoo raws li hom ntses sib txawv 'physiological yam ntxwv, thiab muaj cov ntaub ntawv loj hlob nyob rau hauv ob qho tib si dej qab zib thiab marine ntses ua liaj ua teb, tiv thaiv loj - nplai aquaculture.
1. Core Function ntawm MBBR
MBBR siv cov khoom siv roj ntsha tshwj xeeb los muab qhov chaw ruaj khov rau cov kab mob nitrifying thiab denitrifying, uas tsim cov khoom siv biofilm ntawm cov cab kuj. Los ntawm nitrification, nws hloov cov tshuaj lom ammonia nitrogen (NH3/NH4+) los ntawm cov ntses metabolism thiab cov seem pub rau hauv nitrite, ces mus rau hauv qis - tshuaj lom nitrate, pab tshem tawm cov pa phem nitrogen. Nws kuj optimizes COD, dej alkalinity thiab pH, kom ntseeg tau cov kab mob nitrifying. Piv nrog rau cov kev kho ib txwm muaj - txaj biofilm reactors, MBBR muaj kev tshem tawm cov pa phem ntau dua, tsis tas yuav rov qab ntxuav dua, thiab txo qis kev ua haujlwm thiab cov nqi kho mob.
2. Core Water Quality Control Parameters rau Pas Ntses
MBBR tuaj yeem tswj xyuas cov ntsuas dej zoo hauv qhov chaw nyab xeeb rau ntau hom ntses. Cov parameter tseem ceeb yog raws li nram no:
(1) Cov Ntses Dej Tsis Txaus Siab (Zaj dab ntub, Pikeperch, Sturgeon)
NH3-N Tsawg dua lossis sib npaug ntawm 0.008 mg / L; NO2-N Tsawg dua lossis sib npaug ntawm 0.05 mg / L; NO3-N 20–50 mg/L (NO3 Tsawg dua lossis sib npaug li 220 mg/L); pH 6.5-7.5; alkalinity ntau dua lossis sib npaug rau 1 mmol / L; Soluble oxygen Ntau dua lossis sib npaug li 6 mg / L.
(2) Cov ntses uas tsis muaj dej tsis haum (Common Carp, Nyom Carp, Tilapia, thiab lwm yam)
NH3-N 0.016–0.05 mg/L; NO2-N Tsawg dua lossis sib npaug ntawm 0.1 mg / L (Less dua lossis sib npaug rau 0.02 mg / L rau kev ua liaj ua teb mus sij hawm ntev); NO3-N Tsawg dua lossis sib npaug ntawm 300 mg / L; pH 7.0-8.5; alkalinity ntau dua lossis sib npaug rau 1 mmol / L; dissolved oxygen Ntau dua lossis sib npaug li 5 mg / L.
(3) Siab -tus nqi ntses dej qab zib (Murray Cod, Largemouth Bass)
NH4+-N tsawg dua lossis sib npaug li 0.5 mg/L; NO2-N Tsawg dua lossis sib npaug ntawm 0.05 mg / L; pH 6.8-7.8; yaj oxygen Ntau dua lossis sib npaug li 7 mg / L; COD Tsawg dua lossis sib npaug li 25 mg / L.
Cov Ntsiab Cai
Xyuas kom muaj cov pa oxygen txaus (Ntau dua lossis sib npaug li 5 mg / L hauv thaj chaw aerobic), pH ruaj khov, thiab tsim nyog alkalinity los tswj cov kab mob nitrifying.
3. Cov ntaub ntawv thov ib txwm
Case 1:Ua-hauv MBBR hauv cov thoob dej yug ntses hauv tsev khaws cia NH4+-N < 0.5 mg / L, NO2-N Tsawg dua lossis sib npaug li 0.05 mg / L, ua tiav xoom ntses tuag hauv 90 hnub, thaum pawg tswj hwm tau muaj neeg tuag nyob rau hnub 16.
Case 2:Hauv Murray cod industrial RAS, MBBR muaj cov txiaj ntsig nitrification zoo sib xws rau FBBR (NH4+-N < 0.5 mg/L, NO2-N Tsawg dua lossis sib npaug li 0.05 mg / L) tab sis yooj yim dua los tswj.
Case 3:Hauv European zaj sawv trout ua liaj ua teb, MBBR nrog MixLife BioChip 30 tswj NH3-N < 0.008 mg / L, txhim kho cov dej ntws mus rau ntau dua 95%, thiab txo cov kab mob los ntawm 80%.
4. Daim ntawv thov zoo
1. Kev ua haujlwm siab & ruaj khov ua haujlwm
Boasts zoo heev poob siab loading tsis kam, ua kom ruaj khov effluent dej zoo txawm tias thaum ntsib me ntsis kev hloov pauv hauv qhov kub thiab txias lossis pH tus nqi. Kev ua haujlwm ruaj khov ruaj khov tshem tawm cov dej tsis zoo sib txawv, uas txo cov kev pheej hmoo ntawm kev ntxhov siab hauv cov kab mob hauv dej ua liaj ua teb thiab tswj xyuas qhov chaw yug me nyuam txhim khu kev qha.
2. Zog & Chaw-Kev Tsim Nyog Zoo
Nta cov qauv compact uas yuav tsum muaj qhov me me me me me me piv rau cov txheej txheem kho dej. Meanwhile, nws optimized ua hauj lwm mechanism txiav down lub zog noj ntau heev. Dab tsi ntxiv, nws tshem tawm qhov xav tau ntawm cov txheej txheem rov qab nquag, txo qis qis thiab txo cov nqi zog thiab dej cuam tshuam nrog kev saib xyuas.
3. Zoo heev Versatility & Compatibility
Kev nthuav qhia dav dav rau ntau yam xwm txheej ntawm aquaculture, suav nrog kev ua liaj ua teb dej tshiab thiab dej hiav txwv. Nws tau ua tiav nrog cov khoom siv kho dej hauv cov khoom siv xws li lub tshuab lim dej, cov tshuab aeration thiab UV sterilizers, tso cai rau kev sib xyaw ua ke rau hauv cov txheej txheem recirculating aquaculture (RAS) lossis cov phiaj xwm tshiab.
4. Tus nqi - Ua haujlwm tau zoo & ruaj khov
Nruab nrog siab -lub zog hnav- cov neeg nqa khoom siv biofilm resistant uas xa cov kev pab cuam txuas ntxiv ntawm ntau tshaj [tshwj xeeb xyoo, piv txwv li, 5–8 xyoo] nyob rau hauv ib txwm ua haujlwm. Qhov qis-kev ua tsis tiav- tus nqi tsim txo qis qis dua - cov nqi tu lub sijhawm, thaum cov khoom siv ruaj khov txo qhov zaus ntawm kev hloov khoom. Qhov no txhais tau tias yog tus nqi qis dua ntawm kev ua tswv cuab (TCO) rau cov kws paub txog kev ua liaj ua teb thoob dej yug ntses thoob plaws lub cev lub neej.
MBBR yog cov cuab yeej tseem ceeb rau kev tswj xyuas dej hauv dej kom zoo, txheeb xyuas nws cov nqi hauv cov xwm txheej sib txawv. Nws txhawb RAS nrov, daws cov dej qias neeg, txhim kho kev siv dej thiab txo cov nqi, txhawb nqa kev tsim kho aquaculture kom ruaj khov.