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本文利用煤气废水水质,从影响因素及游离氨毒性作用两方面对亚硝酸型硝化的可行性及稳定性进行了试验研究及理论探讨,研究结果表明,亚硝酸型硝化要求pH>7.5,碱度>350mg/l出水氨氮浓度>20mg/l,游离氯浓度>0.4mg/l,此时,亚硝酸盐氮占硝态氮比例大于90%。一、概述随着人们对环境问题的重视和水处理技术的发展,氮污染的控制已为世界各国所关注。生物脱氮法由于具有处理成本低,去除率
In this paper, the feasibility and stability of nitrous acid nitrification were investigated experimentally and theoretically from the aspects of influencing factors and free ammonia toxicity. The results show that nitrite nitrite requires pH> 7.5, basicity > 350mg / l effluent ammonia concentration> 20mg / l, free chlorine concentration> 0.4mg / l, at this time, nitrite nitrogen accounted for more than 90% of the proportion of nitrate. First, an overview With the emphasis on environmental issues and water treatment technology, nitrogen pollution control has been the concern of all countries in the world. Biological nitrogen removal method because of the low cost, removal rate