High phosphorus content in wastewater?
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The A/O process is used to treat ammonia synthesis wastewater; the phosphorus content in the inlet water is around 20, while it remains at around 13 in the outlet water. How can the phosphorus content in the outlet water be reduced?
The phosphorus content can be reduced to below 0.5 ppm through resin adsorption
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The phosphorus content in the inlet water is around 20, and it remains around 13 in the outlet water; the A/O process is performing quite well. The A/O process has a relatively poor phosphorus removal efficiency, whereas the A2/O process does have phosphorus removal capabilities. Phosphorus removal is generally achieved through biological or chemical methods. In chemical phosphorus removal, metal ions such as calcium, iron, and aluminum are used to generate phosphate precipitates, thereby removing total phosphorus from the water.
Tests can be conducted in the laboratory to examine the phosphorus removal efficiency in both the biochemical effluent and the water before chemical treatment is applied; a plan can then be determined based on these tests
The relatively simple method for phosphorus removal is chemical phosphorus removal; we have used this method. However, the cost is at least around 0.5 yuan per cubic meter, and facilities for sedimentation and sludge removal are also required. First, it is necessary to replace the chemicals used in the circulating water with phosphorus-free ones； That would be more appropriate; otherwise, too much chemical will be used in wastewater phosphorus removal
Ion exchange resins can be considered for use; at this concentration of phosphorus, using resins is cost-effective. After the concentration increases as a result of the purification process, it becomes easier to precipitate the phosphorus using chemicals. If you need sample tests, feel free to contact me. Thank you