Technology for treating high concentration ammonia nitrogen waste water using membrane based absorption method
An ammonia nitrogen wastewater, membrane-based absorption technology, applied in membrane technology, water/sewage treatment, neutralized water/sewage treatment, etc., can solve the problem of less engineering research and other issues
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[0056] Example 1
[0057] The invention is practically applied to a coking plant to process "residual ammonia water". A coking plant mainly produces coke and gas, and recovers chemical by-products such as tar, benzene and naphthalene. In the production process, a large amount of waste water is produced, and the so-called "residual ammonia water" produced in the process of high-temperature coal cracking and raw gas cooling is the main waste water source. The characteristics of the remaining ammonia water are: (1) The amount of water is large, accounting for more than half of the wastewater in the whole plant; (2) The water quality is complex and the components are various. In addition to inorganic pollutants such as ammonia, cyanide and thiocyanate, it also contains phenol. , oil, naphthalene, pyridine, quinoline, anthracene and other condensed aromatic hydrocarbon compounds, etc., (3) high pollutant concentration, among which NH 3 Up to 3000-5000mg / L, COD Cr The content is ...
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