《镁质耐火材料工业大气污染物排放标准》(DB21/3011-2018)是辽宁省第一个强制性大气污染物排放标准,也是该行业首个强制性排放标准.本文介绍标准编制的背景及依据,解析标准执行时段、排放限值等相关要求,便于镁质耐火材料企业、环保企业、环境主管部门等准确掌握标准的主要技术内容,积极推进标准的贯彻实施.

采用"混凝沉淀+臭氧催化氧化+曝气生物滤池(BAF)"组合工艺,对印染废水二级生化处理出水进行提标改造深度处理,设计运行条件下,臭氧投加量为30～40mg/L,处理出水达GB18918-2002《城镇污水污染物排放标准》一级B标准.

高密市环境保护局环境监测站山东高密261500摘要:目前我国城市化进程不断加快,城市人口数量不断增加,工厂生产规模也逐渐扩大,城市环境的污水治理问题也越来越突出.当前水污染问题成为了现代社会健康持续发展所要解决的重要课题.基于此,文章就城市环境保护中的污水治理问题与对策进行简要的分析,希望可以提供一个有效的借鉴.

This paper explains the basic features and treatment difficulties of semi-coke waste water and introduces pre-treatment of feedstock ammonia,treatment of deamination and dephenolization,pre-treatment of distilled ammonia waste water,biochemical treatment,post treatment and advanced treatment technology.By adopting the above treatment technology,the treated water quality can meet the national discharge standard.

通过实验研究了活性炭吸附性能的影响因素,并通过废弃活性炭的再生实验,找到影响活性炭再生的因素.

针对焦炉多集气管压力控制强耦合、非线性、时变性、剧烈扰动变化且幅值大等问题,运用智能混合解耦算法和高压氨水泵曲线调节控制集气管压力扰动及进行参数校订,通过监督控制总管吸力,将集气管压力控制在130±20Pa.

The present situation of mining,processing and utilization and main existing problems of the magnesite resource of our country are described.And rational suggestions are put forward aiming at the present existing problems.

The varieties of coking waste water are classified through the analysis of the sources of coking waste water. The "Discharge Standard for Pollutants from Coking Industry" to be promulgated has much more strict discharge requirement for coking waste water and the regeneration and utilization of coking waste water are more necessary and urgent. Through the analysis of the water quality the diversified ways for the regeneration and utilization of coking waste water are put forward.

Based on the serious situation of the non-point pollution in Haicheng City in Liaoning Province,and through investigating and analyzing the source of chemical pollution,the non-point pollution loading of each area was calculated.Then the equivalent standard pollution loading and index of pollutants were adopted to evaluate the pollutants comprehensively,GIS was used for pollution division,so as to made clear the spatial distribution of chemical fertilizer pollution in Haicheng and put forward corresponding pollution control measures.

选择了海城地区生活污水、畜禽粪尿污染、精养鱼塘污染、化肥污染等几种主要污染源产生的CODcr、TP、TN和BOD5等,进行污染负荷量估算,计算各种污染物的"等标污染负荷"和"等标污染指数"等指标,确定了各区域的面源污染负荷和污染发生几率。充分了解了海城市各区域面源污染的情况及特点,对于制定控制海城市农业面源污染产生的管理策略、工程技术措施、产业结构调整等具有重要的理论意义和现实意义。

选择海城市畜牧业畜禽粪便污染这一主要污染源为研究目标,计算出畜牧业年面源污染负荷量,同时采用等标排放量和等标排放指数等对污染源和污染物进行综合分析评价,明确了该面源污染发生的空间分布规律,并提出了相应的污染控制对策。

焦化污水含有数百种有毒有害物质,目前对于污水中易挥发的低沸点化合物已有成熟的治理方法,但污水中难挥发有机组分,到目的为止还没有切实可行的分析处理方法.下面重点介绍焦化污水中难挥发有机组分的富集、预分离和分离分析方法.