Qhov sib txawv tseem ceeb ntawm kev qhib cov sludge thiab cov lim lim dej yog qhov ua kom cov sludge yog cov kab lis kev cai raug tshem tawm uas biomass yog tov nrog cov dej phwj thaum lub lim lim yog ib qho kev sib txuas kab lis kev cai uas biomass loj hlob hauv xov xwm thiab cov dej phwj tuaj. dhau ntawm nws qhov chaw.
Kev kho dej khib nyiab yog txheej txheem tseem ceeb txhawm rau tiv thaiv cov kab mob hauv dej thiab ua kom muaj kev noj qab haus huv ib puag ncig rau txhua tus. Cov kab mob, tshwj xeeb tshaj yog cov kab mob, yog siv rau hauv cov txheej txheem kho dej khib nyiab. Ntxiv nrog rau cov kab mob, nematodes thiab lwm yam kab mob me kuj koom nrog hauv kev kho dej khib nyiab lom.
Cov kab mob microorganisms zom cov organic teeb meem hauv cov dej khib nyiab thiab pab ua kom huv. Aerobic wastewater kho thiab anaerobic wastewater kho yog ob hom kev kho dej khib nyiab lom. Aerobic microorganisms nqa tawm aerobic wastewater kho nyob rau hauv ib qho chaw tas li ntawm oxygen. Txuas kab lis kev cai los yog cov yeeb yaj kiab ruaj khov thiab cov kab lis kev cai raug tshem tawm yog ob hom kev kho dej aerobic. Hauv kab lis kev cai txuas nrog, biomass yog cog rau ntawm cov khoom siv los yog cov xov xwm thiab cov dej khib nyiab tau dhau ntawm qhov chaw microbial. Trickling lim thiab rotating biological contactor yog ob kab ke kab ke. Hauv kev tshem tawm kab lis kev cai, biomass yog tov nrog dej khib nyiab. Ua kom cov sludge system thiab oxidation ditch yog ob qhov nrov tshem tawm kab lis kev cai.
Dab tsi yog Activated Sludge?
Kev kho cov sludge yog qhov kev loj hlob tsis tu ncua uas yaj thiab colloidal organics yog oxidized nyob rau hauv muaj cov kab mob. Nws yog ib hom kev kho mob thib ob uas cov khoom seem raug tshem tawm yog decomposed los ntawm cov kab mob, thiab cov kab mob raug txo. Ntxiv mus, 90 -95% ntawm BOD txo tau tuaj yeem ua tiav hauv cov tshuab ua haujlwm sludge.
Daim duab 01: Txoj Kev Ua Haujlwm Sludge
Ua kom cov sludge tshuab muaj aeration basins thiab clarifiers. A series ntawm aeration basins yog tsim los txhawb kev loj hlob thiab metabolism ntawm aerobic microorganisms. Lawv tsim aggregates. Lawv yog cov kab mob uas rhuav tshem cov organic load hauv cov dej khib nyiab. Microorganisms siv cov pa oxygen los rhuav tshem cov organic. Cov dej khib nyiab tau khaws cia rau hauv aeration basins rau ob peb teev, tau txais kev aeration dav dav thiab mus rau qhov tseeb. Nyob rau hauv lub clarifier, activated sludge solids tawm los ntawm kev ncua los ntawm flocculation thiab lub ntiajteb txawj nqus sedimentation. Cov khib nyiab cais tawm mus rau hauv lub hauv paus ntawm lub ntsiab lus, tawm hauv qhov tseeb supernatant saum toj no.
Muaj ntau yam teeb meem hauv cov txheej txheem sludge activated. Qee qhov ntawm cov no suav nrog kev loj hlob tawg, bulking, sludge nce, foaming, scum overflow thiab kab mob.
Trickling Filter yog dab tsi?
Trickling lim yog cov txheej txheem kho dej khib nyiab aerobic uas cov biomass loj hlob ntawm cov xov xwm thiab cov dej phwj tuaj hla nws qhov chaw. Nws yog ib hom kab lis kev cai txuas nrog. Nws tseem hu ua percolating filter. Muaj plaub yam tseem ceeb nyob rau hauv lub trickling lim system. Lawv yog lub tank ncig, distributors, underdrain system thiab clarifier.
Lub tank muaj cov lim nruab nrab ua los ntawm cov khoom sib txawv xws li pob zeb, cov khoom siv ceramic, cov ntoo kho, cov thee tawv lossis cov yas, thiab lwm yam. Ntxiv mus, lub lim nruab nrab yuav tsum tsis txhob muaj tshuaj lom rau microbes thiab yuav tsum tau mechanically ruaj khov.
Daim duab 01: Trickling Lim
Cov neeg faib khoom lossis cov caj npab tig cov dej ntws thiab cov dej uas muaj cov organic load percolates los ntawm cov khoom lim. Ib qho biofilm uas muaj ntau hom kab mob aerobic (cov kab mob, fungi, algae, protozoa, thiab lwm yam kev ua neej) yog tsim nyob rau saum npoo ntawm lim nruab nrab. Biofilm rhuav tshem cov organic teeb meem hauv cov dej khib nyiab. Ib qho underdrain system yog siv rau kev sau cov kua lim dej thiab kev taw qhia ntawm huab cua. Clarifier cais cov khoom ntawm cov kua.
Muaj ntau qhov zoo rau lub tshuab lim lim. Nws yog qhov txaus nyiam rau cov zej zog me vim qhov yooj yim ntawm kev ua haujlwm, cov nqi kho mob tsawg, thiab kev ntseeg tau. Tsis tas li ntawd, nws kuj tseem siv los kho cov tshuaj lom neeg muaj kuab lom thiab muaj peev xwm tiv taus kev poob siab ntawm cov khoom siv tshuaj lom. Tsis tas li ntawd, lub sloughed-off biofilm tuaj yeem raug tshem tawm yooj yim thaum lub sij hawm sedimentation.
Dab tsi yog qhov zoo sib xws ntawm Kev Ua Haujlwm Sludge thiab Trickling Lim?
- Ua kom cov sludge thiab lim lim yog ob hom kev kho dej khib nyiab.
- Lawv yog txoj hauv kev lom neeg.
- Lawv kuj yog cov txheej txheem kho mob thib ob.
Dab tsi yog qhov txawv ntawm Kev Ua Haujlwm Sludge thiab Trickling Filter?
Activated sludge yog ib qho kev ncua kev coj noj coj ua uas cov biomass tov nrog cov dej phwj tuaj. Nyob rau hauv sib piv, trickling lim yog ib tug txuas kab lis kev cai system nyob rau hauv uas cov biomass yog zus nyob rau hauv xov xwm, thiab cov dej phwj tuaj hla nws nto. Qhov no yog qhov sib txawv tseem ceeb ntawm activated sludge thiab trickling filter. Cov txheej txheem ua kom cov sludge muaj cov txheej txheem ntawm aeration basins thiab ib qho kev nthuav qhia thib ob thaum cov txheej txheem lim dej muaj yog tias lub tank ncig, cov khoom xa tawm, cov txheej txheem underdrain thiab cov lus qhia meej. Yog li, qhov no yog qhov sib txawv ntawm activated sludge thiab trickling filter nyob rau hauv cov nqe lus ntawm lawv muaj pes tsawg leeg.
Ntxiv mus, cov kab mob hauv cov txheej txheem sludge raug tshem tawm hauv cov dej cawv sib xyaw, thaum cov kab mob hauv cov lim lim tau txuas nrog cov lim nruab nrab. Yog li ntawd, qhov no kuj yog ib qho tseem ceeb sib txawv ntawm activated sludge thiab trickling filter.
Summary – Activated Sludge vs Trickling Filter
Kev kho dej khib nyiab yog txheej txheem tseem ceeb uas yuav tsum tau tswj kom zoo los tiv thaiv tib neeg kev noj qab haus huv. Activated sludge thiab trickling filter yog ob txoj kev kho cov dej khib nyiab aerobic. Qhov sib txawv tseem ceeb ntawm cov activated sludge thiab trickling filter yog tias activated sludge yog cov kab lis kev cai raug tshem tawm thaum lub lim lim dej yog ib qho kab ke sib txuas. Ntxiv mus, activated sludge txheej txheem muaj ob lub ntsiab Cheebtsam: ib tug series ntawm aerobic basins thiab ib tug thib ob clarifier. Nyob rau hauv sib piv, trickling lim muaj ob peb yam: ib ncig lub tank, distributors, ib tug underdrain system thiab ib tug clarifier.
