Thaum cov ammonia nitrogen theem nyob rau hauv cov effluent los ntawm lub aerobic tank yog siab (kev pheej hmoo ntawm tshaj tus qauv), ib tug aeration xeem yuav ua tau nyob rau hauv lub mix cawv nyob rau hauv lub aeration tank los txiav txim seb puas muaj teeb meem nrog cov kab mob nitrifying los yog cov influent. Cov kauj ruam tshwj xeeb yog raws li nram no:
1. Cov khoom siv kuaj:
Me me aeration twj;
Ob peb 1L beakers;
Cua sov (rau siv rau lub caij ntuj no thaum kub qis).
2. Txoj Kev Xeem:
Nqa ib qho piv txwv ntawm cov cawv sib xyaw los ntawm qhov kawg ntawm lub tank aeration;
Ntsuas cov ammonia nitrogen theem nyob rau hauv lub supernatant ntawm cov cawv tov;
Ntxiv lub taub hau me me ntawm lub twj tso kua mis aeration rau cov cawv sib xyaw thiab ua qhov ntsuas aeration. Thaum lub sij hawm cov tshuaj tiv thaiv, sim ua kom cov pa yaj nyob nruab nrab ntawm 2-4 mg / L (cov pa oxygen feem ntau siab dua);
Ntsuas cov ammonia nitrogen theem nyob rau hauv lub supernatant tom qab aeration rau 1-4 teev (ib qho piv txwv yuav tsum tau).
3. Kev txhais cov txiaj ntsig kev xeem
3.1 Tom qab 1-4 teev ntawm kev ntsuas aeration, yog tias ammonia nitrogen txo qis (tab sis qhov txo qis tsis zoo), muaj ob txoj hauv kev:
① Tsis txaus nitrifying kab mob
Cov kab mob nitrifying tsis txaus feem ntau tshwm sim nyob rau hauv cov kab ke uas tsis tshua muaj loads. Cov sludge nyob rau hauv ib qho kev laus, thiab ntau yam xws li dhau- aeration thiab sludge poob vim kev laus ua rau txo qis ntawm cov kab mob nitrifying hauv lub cev, yog li ua rau muaj kev nce hauv ammonia nitrogen. Nyob rau hauv cov ntaub ntawv no, ua ke nrog lub load tsawg, qhov no feem ntau yog ua rau. Nws tuaj yeem kho tau los ntawm kev ua kom lub hnub nyoog sludge (cov kab mob nitrifying muaj lub voj voog ntev ntev) los yog inoculating nrog nitrifying sludge.
② Me ntsis inhibition ntawm nitrifying kab mob
Me ntsis inhibition ntawm nitrifying kab mob feem ntau tshwm sim nyob rau hauv lub nruab nrog ib txwm loads. Muaj feem ntau inhibition nyob rau hauv lub influent, tab sis lub concentration tsis siab. Qhov no tuaj yeem kho tau los ntawm kev txo qis tus nqi ntws tawm.
3.2 Yog tias ammonia nitrogen tsis txo qis, ob qho xwm txheej kuj tseem muaj:
① Tej zaum yuav luag tsis muaj cov kab mob nitrifying hauv cov sludge.
Re- yuav tsum tau txhaj tshuaj nrog cov kab mob nitrifying.
② Nitrifying kab mob yog inhibited heev.
Txoj kev los txiav txim seb cov kab mob nitrifying yog inhibited los ntawm cov dej zoo:
Siv 500 mL ntawm cov neeg muaj zog thiab sib sau ua ke zoo -nitrified activated sludge los ntawm cov chaw kho dej khib nyiab nyob ze. Sib tov lawv thiab ntsuas cov ammonia nitrogen nyob rau hauv supernatant (ua piv txwv);
Ua ib qho kev ntsuas aeration, thiab ntsuas cov ammonia nitrogen hauv cov supernatant tom qab 4 teev.
Yog hais tias ammonia nitrogen txo qis heev, nws qhia tau hais tias tsis muaj cov tshuaj inhibitory hauv lub zog;
Yog tias degradation qeeb heev, nws qhia tau tias muaj cov tshuaj inhibitory hauv lub zog. Nws yog ib qho tsim nyog yuav tsum tau soj ntsuam thiab txheeb xyuas cov qauv dej los ntawm cov lag luam sab saud kom pom qhov chaw.