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Divide the COD focus through the BOD focus for each sample and average the outcome. For example, beneath will be the COD:BOD ratio made making use of a few wastewater samples from get more info a food items processor:
O&G includes a gaggle of connected constituents which are of Unique issue in wastewater remedy because of their distinctive Bodily Qualities and very concentrated Vitality content material.
Sometimes, there might be organic compounds that need extra incubation time to degrade. This may lead to a decrease value of BOD getting computed.
This process uses dwelling organisms to assist in lowering organics. During the aeration basin, microbes and microorganisms change biodegradable organic make any difference to carbon dioxide and h2o. Using this conversion, organics test for BOD are diminished, consequently lessening oxygen desire.
More waste inside the sewers will lead to additional decomposing microbes breaking down the organic and natural subject, So using many oxygen.
Oxygen demand is beneficial for measuring waste loadings, assessing the effectiveness from the treatment processes, and making certain effluent compliance.
The seed (bacteria) included to each Option will degrade the biodegradable substance in Each and every sample relative to the amount of oxygen removed from the h2o. The sample dilution and quantity of oxygen taken out can be utilized to work out the amount of biodegradable product during the sample in mg/L. Each individual sample need to make a residual of one.0 mg/L of dissolved oxygen and possess experienced a dissolved oxygen uptake of at least two.0 mg/L.
BOD values range from one mg/L for natural waters to about 300mg/L for untreated domestic sewage waters.
โรงงานนั้นจะต้องมีบุคลากรด้านสิ่งแวดล้อมประจำโรงงาน ซึ่งได้แก่ ผู้จัดการสิ่งแวดล้อม และ ผู้ควบคุมระบบบำบัดมลพิษน้ำ