[本刊讯]11月上旬,焦化厂历经4个月的探索,生物脱氮系统又有了新的进展,已经连续两个月总排口达到国家一级排放标准。进入5月份,本钢生物脱氮系统在焦化厂上下的共同努力下,焦化废水排放指标好于国家二级排放标准。在保证二级污水排放标准稳定的基础上,不断探索和总结经验,终于查找出影响污水处理的主要指标 [In our newsletter] In early November, after 4 months’ exploration, the biological nitrogen removal system has made new progress. It has reached the national first-class discharge standard for two consecutive months. Into May, Bainang biological nitrogen removal system in the coking plant from top to bottom with the joint efforts, coking wastewater discharge indicators better than the national secondary emission standards. On the basis of ensuring that the standard of secondary effluent discharge is stable, we constantly explore and summarize the experience and finally find out the main indicators that affect the effluent treatment