I. Ua rau nab liab loj hlob
Qhov ntxhib nto ntawmcev rvthiab daim phiaj inclined pab txhawb kev sib sau ntawm flocculated sludge, muab qhov chaw zoo tshaj plaws rau cov kab mob liab. Cov larvae siv flocculated particles thiab sediment los tsim zes nyob rau hauv qab ntawm sedimentation tanks, pub rau algae thiab organic teeb meem. Tom qab pupating rau cov neeg laus, lawv nteg qe rau ntawm phab ntsa tank. Thaum hatching, qee cov larvae nyob hauv qab, thaum lwm tus ntws mus rau hauv qhov system pom.
Kev soj ntsuam ntawm sedimentation tank sludge qhia ob qho tseem ceeb ua rau kab mob liab kab mob:
- Exogenous yam: Cov dej muaj kuab paug hnyav ua rau eutrophication thiab kev loj hlob ntawm algae ntau dhau, tsim kom muaj txiaj ntsig zoo rau kev loj hlob kab liab. Ntau tus larvae tuaj yeem nkag mus rau hauv kev kho dej nrog kev nkag mus.
- Endogenous yam: Larvae overwinter thiab reproduce nyob rau hauv lub infrastructure, ua rau kev loj hlob mus tas li tiam ntawm tus nqi exponential.
II. Red Worm Control Measures
1. Cov txheej txheem ntawm lub cev (Kev ntsuas pab)
- Kev tswj cov tshuaj tsuag: Txhim kho cov cuab yeej tshuaj tsuag hla lub tank tso dej cuam tshuam lub qe- tso los ntawm ntub cov neeg laus tis, tiv thaiv kev ya davhlau thiab mating.
- UV irradiation: Ua kom puas larval DNA thiab cov proteins, muab ib qho yooj yim, nqi - cov tshuaj zoo. Txawm li cas los xij, kev ua tau zoo txo qis nrog ntau dua turbidity.
2. Tshuaj Kho Mob (Larvicidal Agents)
Cov tshuaj tua kab mob ntau tshaj -kua tshuaj chlorine, chlorine dioxide, hydrogen peroxide, ozone, sodium hypochlorite, potassium permanganate, thiab limewater- tuaj yeem tshem tawm cov larvae sai sai ntawm ntau npaum li cas. Ntawm cov no, cov tshuaj chlorine dioxide yog qhov tshwj xeeb tshaj yog vim nws qhov muaj zog larvicidal kev ua haujlwm, cov khoom siv yooj yim, thiab tsis muaj cov tshuaj tua kab mob phem (xws li trihalomethanes).
Cov lus ceeb toom: Kev tso dej tawm hauv cov dej hauv cov kua chlorine (Ntau dua lossis sib npaug li 24 teev) tuaj yeem cuam tshuam cov kab mob ntev - lub sij hawm tab sis cuam tshuam cov nroj tsuag ib txwm ua haujlwm. Yog li, txoj kev no tsuas yog pom zoo thaum muaj kab mob hnyav.