Dukkan Bayanai
EN

Rahoton masana'antu

Gida>Labarai>Rahoton masana'antu

Game da COD, BOD

Lokaci: 2020-06-29 hits: 28

Menene COD?

COD (Bukatar Oxygen Chemical): A karkashin wasu takamaiman yanayi, yawan adadin oxidant da aka cinye a cikin lura da samfuran ruwa tare da takaddara mai ƙarfi.


COD yana nuna darajar gurɓataccen iska a cikin ruwa. Mafi girman bukatar iskanin sunadarai, yayin da yake yawan lalata gurbataccen kwayoyin halitta a cikin ruwa.


An bayyana COD a cikin mg / L, kuma za'a iya raba ingancin ruwa zuwa kashi biyar:

COD na rukuni na biyu kuma na biyu shine ≤15mg / L, wanda zai iya haɗuwa da ƙa'idodin ruwan sha, kuma ruwan da yake da ƙima fiye da na biyu ba za'a iya amfani dashi azaman ruwan sha ba.


Thirdangare na uku na COD ≤ 20mg / L, rukuni na huɗu na COD ≤ 30mg / L, kuma rukuni na biyar na COD ≤ 40mg / L dukkaninsu gurɓataccen ruwa ne. Mafi girman darajar COD, mafi yawan lalata gurɓataccen iska.


Menene BOD?

BOD (Buƙatar Oxygen Oxygen): A ƙarƙashin yanayin yanayin iska, yawan taro na narkar da iskar oxygen da ake buƙata a cikin tsarin ƙirar ƙwayoyin halittar ƙwayar cuta ta kwayoyin halitta a cikin ruwa.


In order to make BOD detection values comparable, a five-day cycle is generally specified, and the consumption of dissolved oxygen in the water is measured, which is called the five-day biochemical oxygen demand and is recorded as BOD5.


BOD alama ce ta lura da muhalli da aka yi amfani da ita wajen lura da gurbatar da kwayoyin halittar cikin ruwa. Kwayoyin halitta zasu iya zama bazuwar kwayoyin. A cikin wannan tsari, ana buƙatar cinye oxygen. Idan narkar da iskar oxygen a cikin ruwa bai isa ya samar da bukatun kananan kwayoyin ba, jikin ruwan yana cikin yanayin gurbatar yanayi.


Mecece alaƙar da ke tsakanin COD da BOD?

COD (Chemical Oxygen Demo) shine adadin iskar oxygen da ake amfani da shi ta hanyar hadawan abu da iskar shaka tare da sinadarai, kuma BOD (Biochemical Oxygen Demand) shine adadin iskar oxygen da ake amfani da shi ta hanyar lalata abubuwa a cikin najasa. Consumptionarin shan iskar oxygen yana nufin ƙarin gurɓataccen ƙwayoyin halitta a cikin ruwa.


A bisa ga al'ada, COD (Kiba Oxygen Chemical) yana buƙatar wakilcin duk kwayoyin halitta a cikin ɗakin shara, kuma BOD (Biochemical Oxygen Demand) yana wakiltar kwayoyin kwayoyin halitta a cikin najasa. Sabili da haka, bambanci tsakanin COD da BOD na iya wakiltar kwayoyin halitta wanda ba za a iya yin ƙasa da su ba cikin ƙazantar.