Malo Ochizira Madzi Otayira akulimbana ndi mizere itatu yoyipa.

Monga bizinesi yoletsa kuwononga chilengedwe, ntchito yofunika kwambiri ya malo oyeretsera zimbudzi ndikuwonetsetsa kuti zonyansazo zikukwaniritsa miyezo. Komabe, ndi kuchulukirachulukira kwa miyezo yotayirira komanso kuuma mtima kwa oyang'anira chitetezo cha chilengedwe, zabweretsa zovuta zogwirira ntchito kumalo opangira zimbudzi. Kukuvuta kwambiri kutulutsa madzi.

Malinga ndi zomwe wolembayo adawona, chifukwa chachindunji chazovuta kufikira muyezo wotulutsa madzi ndikuti nthawi zambiri pamakhala mabwalo atatu oyipa m'zimbudzi za mdziko langa.

Choyamba ndi kuzungulira koyipa kwa ntchito zotsika zamatope (MLVSS/MLSS) ndi kuchuluka kwa zinyalala; chachiwiri ndi nkhanza bwalo lalikulu kuchuluka kwa phosphorous kuchotsa mankhwala ntchito, ndi zambiri sludge linanena bungwe; chachitatu ndi yaitali zimbudzi mankhwala plant ntchito mochulukirachulukira, zipangizo sangathe overhauled, kuthamanga ndi matenda chaka chonse, kutsogolera bwalo loipa la kuchepetsa zimbudzi mphamvu.

#1

The nkhanza bwalo la otsika sludge ntchito ndi mkulu sludge ndende

Pulofesa Wang Hongchen wachita kafukufuku pa zomera 467 zonyansa. Tiyeni tiwone zambiri za ntchito za sludge ndi ndende ya sludge: Pakati pa zomera zonyansa za 467, 61% ya zonyansa zonyansa zili ndi MLVSS/MLSS zosakwana 0.5, pafupifupi 30% yazomera zochizira zimakhala ndi MLVSS/MLSS pansi pa 0.4.

Kuchuluka kwa zinyalala za 2/3 za zimbudzi zopangira zinyalala zimaposa 4000 mg/L, kuchuluka kwa matope a 1/3 a zinyalala kumapitilira 6000 mg/L, ndipo kuchuluka kwa zinyalala m'zimbudzi 20 kumaposa 10000 mg/L. .

Kodi zotsatira za zinthu zomwe zili pamwambazi ndi zotani (zochepa zamatope, kuchuluka kwa zinyalala)? Ngakhale tawona zolemba zambiri zaukadaulo zomwe zimasanthula chowonadi, koma m'mawu osavuta, pali chotsatira chimodzi, ndiko kuti, kutuluka kwamadzi kumaposa muyezo.

Izi zitha kufotokozedwa m'mbali ziwiri. Kumbali imodzi, pambuyo poti sludge ndende ndi mkulu, pofuna kupewa sludge mafunsidwe, m`pofunika kuonjezera aeration. Kuchulukitsa kuchuluka kwa aeration sikungowonjezera kugwiritsa ntchito mphamvu, komanso kukulitsa gawo lachilengedwe. Kuwonjezeka kwa okosijeni wosungunuka kudzalanda gwero la kaboni lomwe limafunikira kuti denitrification, zomwe zidzakhudza mwachindunji kuchotsedwa kwa phosphorous m'dongosolo lachilengedwe, zomwe zimapangitsa kuchuluka kwa N ndi P.

Kumbali ina, kuchuluka kwa zinyalala kumapangitsa mawonekedwe amatope amadzi kukwera, ndipo matopewo amatayika mosavuta ndi madzi otayira mu thanki yachiwiri ya sedimentation, yomwe imatha kutsekereza zida zapamwamba kapena kupangitsa kuti COD ndi SS zidutse. muyezo.

Titakambirana za zotsatira zake, tiyeni tikambirane chifukwa chake zomera zambiri zonyansa zimakhala ndi vuto la kuchepa kwa zinyalala komanso ndende ya matope ambiri.

M'malo mwake, chifukwa cha kuchuluka kwa zinyalala ndi ntchito ya matope otsika. Chifukwa ntchito ya sludge ndiyotsika, kuti muwongolere chithandizo, kuchuluka kwa zinyalala kuyenera kuwonjezeka. The otsika sludge ntchito chifukwa chakuti chikoka madzi lili lalikulu kuchuluka kwa slag mchenga, amene amalowa kwachilengedwenso mankhwala unit ndi amasonkhana pang`onopang`ono, zomwe zimakhudza ntchito tizilombo.

Pali slag ndi mchenga wambiri m'madzi omwe akubwera. Imodzi ndi yoti kutsekeka kwa grille ndi koyipa kwambiri, ndipo ina ndikuti kuposa 90% ya malo oyeretsera zimbudzi m'dziko langa sanapange matanki oyambira.

Anthu ena angafunse kuti, bwanji osamanga thanki yoyamba ya matope? Izi ndi za netiweki ya chitoliro. Pali zovuta monga kusalumikizana, kulumikizana kosakanikirana, ndikusowa kulumikizana mu netiweki ya chitoliro m'dziko langa. Zotsatira zake, madzi abwino a zomera zonyansa nthawi zambiri amakhala ndi makhalidwe atatu: high inorganic solid concentration (ISS), low COD, Low C/N chiŵerengero.

Kuchuluka kwa zinthu zolimba m'madzi okhudzidwa ndipamwamba, ndiko kuti, mchenga ndi wochuluka. Poyambirira, thanki yoyamba ya sedimentation imatha kuchepetsa zinthu zina zakuthupi, koma chifukwa COD yamadzi okhudzidwa ndi yochepa, zomera zambiri zonyansa sizimamanga tanki yoyamba ya sedimentation.

Pomaliza, ntchito ya matope otsika ndi cholowa cha "zomera zolemera ndi maukonde opepuka".

Tanena kuti kuchuluka kwa zinyalala komanso kuchepa kwa ntchito kumabweretsa kuchuluka kwa N ndi P m'madzi. Panthawiyi, njira zoyankhira za zomera zambiri zonyansa ndizowonjezera magwero a carbon ndi flocculants. Komabe, kuwonjezera kuchuluka kwa magwero akunja a kaboni kumapangitsa kuti pakhale kuwonjezereka kwamphamvu kwamagetsi, pomwe kuwonjezera kuchuluka kwa flocculant kudzatulutsa kuchuluka kwa matope amankhwala, zomwe zimabweretsa kuwonjezeka kwa ndende ya sludge ndi zina. kuchepetsa ntchito ya matope, kupanga bwalo loyipa.

#2

Kuzungulira koyipa komwe kuchulukirachulukira kwa mankhwala ochotsa phosphorous omwe amagwiritsidwa ntchito, m'pamenenso kupanga matope ambiri.

Kugwiritsa ntchito mankhwala ochotsa phosphorous kwachulukitsa kupanga matope ndi 20% mpaka 30%, kapena kupitilira apo.

Vuto la matope lakhala likudetsa nkhawa kwambiri malo opangira zimbudzi kwa zaka zambiri, makamaka chifukwa palibe njira yotulutsira matope, kapena njira yotulukira ndi yosakhazikika. .

Izi zimabweretsa kutalika kwa zaka za sludge, zomwe zimayambitsa kukalamba kwa sludge, komanso zovuta zina zazikulu monga kuchuluka kwa matope.

Dothi lokulitsidwa limakhala ndi kusayenda bwino. Ndi kutaya kwamadzi kuchokera ku tanki yachiwiri ya sedimentation, chithandizo chapamwamba cha mankhwala chimatsekedwa, zotsatira za mankhwala zimachepetsedwa, ndipo kuchuluka kwa madzi osamba kumbuyo kumawonjezeka.

Kuwonjezeka kwa kuchuluka kwa madzi osamba m'mbuyo kudzabweretsa zotsatira ziwiri, chimodzi ndi kuchepetsa zotsatira za mankhwala a gawo lapitalo lazachilengedwe.

Madzi ochuluka a backwash amabwereranso ku tanka ya aeration, yomwe imachepetsa nthawi yeniyeni yosungira ma hydraulic ya kapangidwe kake ndikuchepetsa zotsatira za chithandizo chachiwiri;

Chachiwiri ndi kupititsa patsogolo kuchepetsa processing zotsatira za kuya processing unit.

Chifukwa madzi ambiri otsuka m'mbuyo ayenera kubwezeredwa ku makina opangira mankhwala apamwamba, kuchuluka kwa kusefera kumawonjezeka ndipo mphamvu yeniyeni ya kusefera imachepetsedwa.

Zotsatira zonse za mankhwala zimakhala zosauka, zomwe zingapangitse phosphorous yonse ndi COD m'madzi otayira kupitirira muyezo. Pofuna kupewa kupitilira muyeso, chomera cham'madzi chimawonjezera kugwiritsa ntchito zinthu zochotsa phosphorous, zomwe zidzawonjezera kuchuluka kwa matope.

mu bwalo loyipa.

#3

Kuzungulira koyipa kwa nthawi yayitali kuchulukirachulukira kwa zimbudzi zonyansa komanso kuchepa kwa zimbudzi

Kuchiza zimbudzi sikudalira anthu okha, komanso zipangizo.

Zida zonyansa zakhala zikumenyana kutsogolo kwa madzi oyeretsera madzi kwa nthawi yaitali. Ngati sichikukonzedwa nthawi zonse, mavuto amabwera posachedwa. Komabe, nthawi zambiri, zida zonyansa sizingakonzedwe, chifukwa chipangizo china chikayima, kutuluka kwa madzi kumakhala kopitilira muyeso. Pansi pa chindapusa cha tsiku ndi tsiku, aliyense sangakwanitse.

Pakati pa malo 467 otsukira zimbudzi zamatawuni omwe Pulofesa Wang Hongchen adafunsidwa, pafupifupi magawo awiri mwa atatu a iwo ali ndi kuchuluka kwa hydraulic kuchuluka kwa 80%, pafupifupi gawo limodzi mwamagawo atatu opitilira 120%, ndipo 5 zotsukira zimbudzi ndizoposa 150%.

Pamene kuchuluka kwa hydraulic load ndi kwakukulu kuposa 80%, kupatulapo malo ochepa kwambiri ochotsera zinyalala, malo osungiramo zimbudzi sangathe kutseka madzi kuti asamalire poganiza kuti madzi otayira amafika pamlingo, ndipo palibe madzi osungira. kwa ma aerators ndi sedimentation tank yachiwiri kuyamwa ndi scrapers. Zida zapansi zimatha kusinthidwa kwathunthu kapena kusinthidwa pamene zatsanulidwa.

Izi zikutanthauza kuti, pafupifupi 2/3 ya zomera zonyansa sizingathe kukonzanso zipangizozo poonetsetsa kuti madzi otayirawo akukwaniritsa muyeso.

Malinga ndi kafukufuku wa Pulofesa Wang Hongchen, nthawi ya moyo wa ma aerators nthawi zambiri imakhala zaka 4-6, koma 1/4 ya zomera zachimbudzi sizinapange kukonza mpweya wabwino pa ma aera kwa zaka zisanu ndi chimodzi. Chopukuta matope, chomwe chimafunika kukhuthulidwa ndi kukonzedwa, nthawi zambiri sichikonzedwa chaka chonse.

Zipangizozi zakhala zikuyenda ndi matenda kwa nthawi yayitali, ndipo mphamvu yothira madzi ikukulirakulira. Pofuna kupirira kupanikizika kwa malo otulutsira madzi, palibe njira yoyimitsira kuti isamalidwe. Mu bwalo loipa loterolo, padzakhala nthawi zonse njira yochotsera zimbudzi zomwe zidzayang'anire kugwa.

#4

lembani kumapeto

Pambuyo pa chitetezo cha chilengedwe chinakhazikitsidwa monga ndondomeko ya dziko langa, minda ya madzi, gasi, olimba, nthaka ndi zina zowonongeka zowonongeka zinakula mofulumira, pakati pawo gawo lachimbudzi linganene kuti ndilo mtsogoleri. Mulingo wosakwanira, ntchito yopangira zimbudzi yagwera m'mavuto, ndipo vuto la maukonde a mapaipi ndi zinyalala lakhala zolephera zazikulu ziwiri zamakampani opanga zimbudzi mdziko langa.

Ndipo tsopano, ndi nthawi yokonza zolakwikazo.