Thaum kev lag luam aquaculture tau ua tiav cov txiaj ntsig zoo, qhov ncaj qha tso tawm ntawm cov dej khib nyiab loj loj kuj tau ua rau cov dej paug ib puag ncig; Nyob rau hauv xyoo tas los no, kev kis kab mob thiab kev tuag loj ntawm cov ntses dej qab zib, cov cw marine, shellfish, thiab lwm yam tau tshwm sim ntau zaus, ua rau tib neeg paub tias kev tshawb fawb thiab kev loj hlob ntawm aquaculture water purification technology yog qhov tseem ceeb dua.
Lub ntsiab qhov chaw ntawm cov dej khib nyiab
- Autologous dej khib nyiab
- Cov dej khib nyiab hauv tsev thiab kev lag luam
-Kev siv ntau dhau ntawm Aquaculture tshuaj / tshuaj
Aquaculture wastewater feem ntau suav nrog cov khoom hauv qab no:
Ib qho yog inorganic pollutants, sawv cev los ntawm cov as-ham xws li N thiab P thiab tshem tawm hais. Kev siv ntau ntawm kev pub, excrement ntawm cov khoom hauv dej, algae thiab kab mob; Cov no yuav cuam tshuam rau lub cev dej thiab cov dej nyob ib sab ntawm tus dev yug tsiaj, tsim eutrophication ntawm lub cev dej, rhuav tshem cov ecosystem qauv thiab kev ua haujlwm ntawm cov tsiaj yug tsiaj, thiab ua rau ecological imbalance.
Qhov thib ob yog cov kuab paug organic, sawv cev los ntawm cov kab mob kab mob thiab tshuaj lom neeg oxygen xav tau (COD). Lawv tsuas yog los ntawm ib feem ntawm cov khoom noj thiab cov chiv tsis nqus los ntawm cov khoom hauv dej, cov metabolic excrement ntawm cov dej hauv dej, cov khib nyiab tuag, thiab lwm yam, uas yuav ua rau muaj kev nce ntxiv ntawm cov tshuaj lom neeg xav tau oxygen thiab cov kab mob pathogenic hauv dej, xws li. xws li Escherichia coli, Toxobacter, parasites, viruses, Fungi, thiab lwm yam. Lawv tuaj yeem cuam tshuam lub neej ntev ntawm cov khoom hauv dej hauv me ntsis, thiab ua rau muaj kab mob ua paug rau qhov mob hnyav, thiab yuav ua rau muaj kab mob sib kis los ntawm kev tso dej pov tseg.
Kev daws:
Lub peev xwm kho tseem ceeb ntawm kev ntxiv coagulant qhia tau tias nws txhim kho qhov kev ncua hauv dej. Kev tshem tawm tus nqi ntawm cov khoom siv kho tshuab thiab cov colloids tuaj yeem txhim kho qhov zoo ntawm thawj cov dej ntws tawm thiab txo cov organic loads rau kev ua haujlwm tom ntej kom txuag tau peev thiab cov nqi khiav lag luam.
Cov tshuaj nrov peb feem ntau xaiv yogPolyaluminium Chloride (PAC), Polyaluminium Ferric Chloride (PAFC), Polyferric Sulphate (PFS), Polyacrylamide (Pam) thiab sodium hypochlorite (NaClO). Yog tias ua ke nrog cov cuab yeej flotation ultra-fine thiab lub cev thiab tshuaj ua ke thev naus laus zis ntawm kev siv tshuaj ua ntej-kawg, qhov kev txiav txim siab thiab ntu ntu ntawm aquaculture tail dej kho yuav ua tau zoo heev. Hauv cov ntaub ntawv ntxiv 40 mg.L-1 ntawm PAC, 2 mg.L-1 ntawm PAM thiab 30 mg.L-1 ntawm NaClO , cov txheej txheem thev naus laus zis no tuaj yeem txo qis COD, ammonia nitrogen thiab tag nrho phosphorus hauv cov dej khib nyiab rau hauv 50mg.L-1, 1.0mg.L-1 thiab 0.3mg.L-1.
Polyaluminium Chloride (PAC) nrog cov ntsiab lus sib txawv