An integrated process of wastewater treatment and utilization is presented . the process is made up of heating the soft water of room temperature by high temperature printing and dyeing wastewater via heat exchangers , reusing the low level base decrement wastewater of water washing for dust control and desulphurizing of stack gas and anaeration - aeration biological treatment of printing and dyeing wastewater . this process has fair economical benefit on the principle of so called waste control by waste itself . this might be an ideal process for printing and dyeing wastewater treatment and disposal , the effluent of this process is quite enough to meet the requirement of urban sewer collector . additionally also many advantages are attractive such as the complete return of biological sludge to digestion , no chemicals dosage and free of secondary pollution 介绍了高温印染废水通过热交换加热常温软水、低浓度碱减量水洗废水用于烟道气除尘脱硫、厌氧-好氧处理一般印染废水等印染废水综合处理技术，该技术具有较好的经济效益，达到了以废治废的目的，生物污泥全部回流硝化，不加任何药剂，无二次污染，处理后水质达到城市截污管网标准要求，是一种较为理想的印染废水处理工艺。
The fourth chapter of this dissertation introduces a variety of ntms agreements of wto , and also analyses different questions in these agreements . these questions consist of three kinds , which include concrete and abstract questions like the rationality of some measures or their meaning and purpose to our society 这些问题虽然各不相同，但大致可分为三类:一是某项协议中存在的具体问题;二是某项非关税措施本身的合理性等关系其存废的大问题;三是某个非关税措施的社会经济和法律意义、作用
Beijing steps the asian especially inorganic building materials technical research institute below the unceasing innovation is throughout the idea , the foothold good faith , from all walks of life hand in hand again creates the environmental protection , the energy conservation , the utilization of waste new building material magnificence with the society 北京迈亚特无机建材技术研究所始终以下不断创新为理念，立足诚信，与社会各界携手再创环保、节能、利废的新型建筑材料的辉煌。
