Idan aka yi la'akari da bayanan tallace-tallace na baya-bayan nan, adadin odar da Kariyar Muhalli ta Liding ta karɓa don kayan aikin AAO har yanzu yana da yawa. Waɗanne abubuwa ne ke sa abokan ciniki su ƙara amincewa da wannan tsari? Na gaba, Kariyar Muhalli ta Liding za ta gabatar da ainihin tsarin AAO.
Babban aikin AAO shine amfani da nitrification da denitrification na halittu a ƙarƙashin yanayi daban-daban don cimma nasarar cire nitrogen, da kuma amfani da ƙwayoyin cuta masu tarin phosphorus don cire phosphorus. Saboda haka, wannan tsari ya fi dacewa da ayyukan da ke da tsauraran iko kan gurɓatattun nitrogen da phosphorus. Babban ayyukan kayan aikin tsaftace najasa na cikin gida na tsarin AAO an tattara su ne a cikin nau'ikan amsawa guda uku, waɗanda su ne wurin wanka na anaerobic, wurin wanka na anoxic da wurin wanka na aerobic.
A yankin amsawar anaerobic, saboda rashin nitrate da iskar oxygen a cikin najasa na kayan aikin tsaftace najasa na cikin gida na karkara, ƙwayoyin cuta masu tara phosphorus suna adana makamashi a cikin mahaɗan da ke tara phosphorus kuma suna fitar da radicals na phosphate a lokaci guda, yayin da sauran ƙwayoyin cuta ba sa aiki. A cikin wannan tsarin amsawar, sauran ƙwayoyin cuta ba sa aiki sosai kuma suna da wahalar girma. Ana amfani da tsarin amsawar anaerobic don rage COD da shirya don cire phosphorus.
A cikin tsarin amsawar anoxic, najasar kayan aikin tsaftace najasa na cikin gida na karkara tana da wani adadin nitrate ba tare da iskar oxygen ba, kuma ƙwayoyin cuta masu rage yawan amfani da COD don rage nitrate zuwa nitrogen, sakin alkali, da kuma samun kuzari don girma. Rage COD da nitrate nitrogen.
Tsarin amsawar iskar oxygen shine babban yankin amsawar kayan aikin tsaftace najasa na cikin gida na karkara. A nan, ƙwayoyin cuta masu nitrifying suna lalata ammonia nitrogen zuwa nitrate nitrogen, suna cinye alkalinity da oxygen, PAOs suna shan babban adadin phosphorus, suna amfani da makamashin da ke cikin PHAs don haɗa polyphosphorus, kuma OHOs suna ci gaba da cire COD, PAOs, OHOs, da ƙwayoyin cuta na nitrifying duk ana girma su a cikin wannan tsari. Rage COD, ammonia nitrogen da phosphorus.
Daga nazarin buƙatun ayyukan gyaran najasa na cikin gida na karkara, zaɓin tsarin gyaran najasa ya kamata ya cika buƙatun ma'aunin magani, halayen najasa, ingancin ruwan da ke fitowa da kuma jikin ruwan da ke fitarwa. A lokaci guda, ya kamata a zaɓi tsarin gyaran da ya dace bisa ga halayen najasa na gida. Yawancin lokuta sun nuna cewa kayan aikin gyaran najasa na karkara na AAO suna da kyakkyawan daidaitawa ga nau'ikan ayyuka daban-daban.
Lokacin Saƙo: Yuli-06-2023