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The Similarities And Differences Of Water Purification

Apr 11, 2017

Methods for controlling nitrogen content (4 species): Biological nitrification-denitrification (inorganic nitrogen delayed aeration oxidation into nitrate, then anaerobic denitrification converted into nitrogen); The fold-point chlorination (secondary effluent is cast chlorine, to the residual total dissolved chlorine reaches the lowest point, total oxidation of ammonia nitrogen in water, selective ion exchange; ammonia gas extraction (secondary effluent ph increased to more than 11, so that the ammonium ions into ammonia, the effluent of intense aeration, gas in the way of ammonia removal from the water, and then adjust ph to the appropriate value). The removal rate of nitrogen can be more than 90% per method.