Menene lokacin riƙewar tankin MBBR?
MBBR (Moving Bed Biofilm Reactor) ingantaccen fasahar jiyya na halitta ce da ake amfani da ita don sharar ruwa. Yana haɗu da fa'idodin sludge da aka kunna da tsarin biofilm ta hanyar ƙara manyan abubuwan dakatarwa da aka dakatar da su a cikin injin don ƙara haɗewa da haɓaka sararin samaniya don ƙwayoyin cuta, don haka haɓaka ingantaccen magani.
Lissafin Lokacin Riƙon Ruwan Ruwa
Lokacin Riƙewar Ruwa (HRT) yana nufin matsakaicin lokacin zama na ruwan sharar gida a cikin reactor. Dabarar ƙididdige lokacin riƙewar ruwa na tafkin MBBR shine kamar haka:
HRT {0}QV
Inda:
V shine ingantaccen girma na reactor (m3), la'akari da cewa reactor bai cika cika da ruwa ba a cikin ainihin aiki, yawan adadin da ya dace da ainihin zurfin ruwa yawanci ana ɗauka.
Q shine tasirin kwararar ruwa (m3/h).
Yadda ake ƙididdige Lokacin Riƙon Sludge?
Lokacin Riƙe Sludge (SRT), wanda kuma aka sani da lokacin riƙewar halittu, yana nufin matsakaicin lokacin zama na biomass (sludge) a cikin tsarin.
A cikin tsarin MBBR, ƙididdige SRT kai tsaye yana da rikitarwa saboda ƙayyadaddun ƙirar tsarin (fim ɗin da aka haɗe da filler maimakon a dakatar da shi cikin ruwa kyauta). Ana sarrafa SRT a kaikaice ta hanyar sarrafa rarrabuwar tsarin da kuma lura da kauri na biofilm maimakon a lissafta kai tsaye.
Don tsarin MBBR, saboda yawancin maganin ilimin halitta yana faruwa a kan biofilm surface a kan filler, tsarin tsarin ya dogara ba kawai akan lokacin riƙewar ruwa ba har ma a kan kauri da aiki na biofilm. Sabili da haka, mabuɗin don sarrafawa da haɓaka tsarin MBBR ba kawai ta hanyar ƙididdigewa da daidaitawa HRT ba har ma da saka idanu da kuma kula da lafiyar biofilm akan filler.
Don ƙarin ƙayyadaddun ƙididdiga da ƙira na tsarin, ana buƙatar la'akari da dalilai kamar halayen ruwan sha, maƙasudin jiyya, sigogin ƙirar reactor, da sauransu. gyare-gyare da haɓakawa na iya buƙatar takamaiman ayyukan injiniya da gogewa.
Don tsarin kula da sludge da aka kunna na gargajiya, za mu iya ƙididdige Lokacin Riƙon Sludge (SRT), wanda kuma aka sani da Lokacin Riƙon Tsari (SST) ko Lokacin Riƙewar Halittu. Ga misalin lissafi mai sauƙi don taimaka muku fahimtar yadda ake lissafin SRT.
Zato:
Ƙarfin tasiri na yau da kullum: 10, 000 m3/rana
Tasirin Dakatar da Solids (SS): 200 mg/L
Matsalolin SS mai lalacewa: 30 mg/L
Fitar da ruwa na yau da kullun: 200m3/rana
Sludge SS maida hankali: 10,{1}} mg/L
Mixed Liquor Suspended Solids (MLSS) taro a cikin reactor: 3,{1}} mg/L
Ingantacciyar girma na reactor: 5,{1}} m3
Matakai don ƙididdige SRT:
Yi ƙididdige nauyin SS na yau da kullun (watau jimlar adadin SS shigarwa da barin reactor).
Tasirin jimlar SS=Ƙarar mai tasiri × Tasirin SS mai tasiri=10,000 m3/ rana × 200 mg/L
Jumlar SS mai ƙuracewa=Ƙarfin mai sheki × Mahimmancin SS taro=10,{2}}m3/rana × 30 mg/L
Sludge SS jimlar=Fitar da ruwa × sludge SS taro=200 m3/rana × 10,{1}} mg/L
Yi ƙididdige jimlar SS a cikin tsarin (MLSS).
Jimlar SS a cikin tsarin=Ingancin girma na reactor × MLSS taro=5,000 m3× 3, {1} MG/L
Yi lissafin SRT.
SRT (Lokacin Riƙewar Tushe)=Jimlar SS a cikin tsarin / (Mai tasiri duka jimlar SS - jimlar SS ɗin da aka yi amfani da su + jimlar Sludge SS)
Bari mu lissafta takamaiman ƙimar.
Dangane da lissafin da ke sama, Lokacin Riƙe Sludge (SRT) na wannan tsarin kula da sludge mai kunnawa shine kusan kwanaki 4.05. Wannan yana nufin cewa matsakaicin lokacin zama na sludge a cikin tsarin shine kwanaki 4.05 kafin a fitar da shi daga tsarin. Wannan ƙimar tana da mahimmanci don fahimta da sarrafa ƙimar ruɓar halittu na sludge, ingantaccen tsarin jiyya, da ayyukan kulawa da suka wajaba (kamar fitar da sludge).