Home Products Sewage Treatment Bacteria Municipal Sewage Treatment Cleaning and Degrading Sewage COD Bacter
When the COD content in the sewage is very high, it will increase the load between the process or equipment. At the same time, the process and equipment must be adjusted. Even so, it is still difficult to ensure that the effluent can meet the standard.
How does wastewater reduce COD? To solve the problem of "how to reduce COD", we need to understand the reasons why COD in water is abnormal.
Reasons for abnormal COD in water
1) Abnormal reducing inorganic substances
COD is used to represent organic pollutants in sewage, but in fact, the measured value of COD also includes inorganic substances such as nitrite, sulfide, and ferrous salt, which is greater than the real amount of reducing organic substances in sewage.
Therefore, if the reducing inorganic matter in the water is abnormal, it will also affect the determination of COD.
2) Shock load of water intake
Fluctuations in the quality and quantity of influent water will also lead to abnormal effluent COD.
In such a situation, COD bacteria powder can be used to clean the sewage at the external discharge outlet to deeply remove the COD in the water, so that the wastewater can be discharged up to the standard.
Biochemical system problem
In the water treatment problem of how to reduce COD, the abnormal situation of the biochemical system is often encountered.
3) The biochemical system will be easily affected by the following factors
》Temperature fluctuation
》The proportion of nutrients is not balanced
》Dissolved oxygen fluctuation in water
》Sludge poisoning and aging
》Excessive salt enters the biochemical system
》Weak capacity of anaerobic and aerobic tanks
》Excessive aeration
...
How to reduce COD
1) Since reducing inorganic substances in water affect the determination of COD, it is recommended to test several times, take different water samples, and test other substances to ensure the correctness of COD detection.
2) Directly use COD to clean up and decompose bacteria.
The time it takes to adjust the process can be as short as one and a half years, or as long as three years and two years, and the sewage discharge problem cannot wait at all.
It is recommended to use COD degrading bacteria agent, which can be directly added to the sewage without additional process or equipment.
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