What are the water quality requirements of sewage treatment plants?
Sewage treatment is the most heard word in recent years. Due to the disorderly discharge of urban sewage, the living environment is damaged, which seriously affects our normal lives. The establishment of a sewage treatment plant can centrally treat urban sewage and improve the environmental impact of water pollution. harm. However, when the sewage treatment plant treats urban sewage, it must be noted that the water quality entering the sewage treatment system will affect the normal operation of the sewage treatment plant.
Xining sewage treatment equipment
1. The content of BOD and COD in the feedwater is lower than the design value, and the indicators such as nitrogen and phosphorus are equal to or higher than the design value, thereby increasing the difficulty of wastewater discharge for nitrogen and phosphorus removal.
2. The entrained oil or toxic substances in industrial wastewater have a huge impact on the biological system of urban sewage treatment plants. In extreme cases, these oil or toxic substances will paralyze the entire biological system and cause the death of microorganisms. Re-cultivate activated sludge.
3. The quality of the incoming water is too high, and the specifications of the oxygen supply and sludge dewatering equipment cannot meet the requirements of sewage and sludge treatment. Among them, the impact of the introduction of landfill leachate on the operation of urban sewage treatment plants needs to be given sufficient attention.
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