How to achieve harmless treatment of sodium alginate wastewater?

How to achieve harmless treatment of sodium alginate wastewater?

The wastewater discharged by enterprises has the characteristics of high organic pollution concentration, high suspended solids in the water, and low pH value, and needs to meet the first level standard of the Comprehensive Wastewater Discharge Standard (GB8978-1996). The wastewater has a high amount of suspended solids and a low pH value. Before biological treatment, the suspended solids must be removed and the pH value of the wastewater adjusted to facilitate the operation of subsequent biological treatment. The concentration of organic pollutants in wastewater is high, and the pollutants are not easily biochemical. Therefore, anaerobic and aerobic biochemical treatment processes need to be selected to minimize the concentration of organic pollutants in the treated effluent.

The most advanced environmentally friendly method in China is the use of biological contact oxidation. After biological treatment, the wastewater still contains some colloidal substances and small suspended solids. In order to remove these substances and further remove organic matter from the wastewater, the subsequent physical and chemical treatment unit is coagulation sedimentation+filtration. The filtered water can be discharged through standardized discharge outlets to meet the standards.

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