Reasons for high COD levels in the water quality of Texaco gasifiers
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Our company’s COD level is below 850 mg/l, but it has been exceeding this limit recently; I’m not sure why. I would appreciate it if everyone could discuss this matter. The water used for coal slurry preparation comes from (low-pressure ash water and distillation residues), while the water used in deaerators comes from (raw water, converted condensate, and recycled low-pressure ash water). Could anyone tell me if the high COD level is mainly due to the quality of the coal? How should it be handled?
COD is often used as an indicator to measure the amount of organic matter in water. The higher the chemical oxygen demand, the more severe the pollution of the water body by organic substances. At a temperature of over 1000 degrees, how much of the organic matter can still remain! ! ! It doesn’t have much to do with coal
It turns out it’s from the same factory! ! ! ! ! ! ! !
In the case of excessive COD levels in the gasified water, identify the cause of this issue and take action to address it; if the cause cannot be found, then it is necessary to increase the volume of raw water and wastewater used for water quality replacement.
What are the hazards of high COD levels? I’m a beginner; could you help explain it?
Analyze the quality of the water entering the system, such as condensate, raw water, circulating water, etc., to check whether the COD level is above the limit.
The shift condensate generally contains naphthenes and aromatics; it can be considered for use in preparing water from coal slurry