Development of water treatment and water use system to protect water environment

为了减少污染物对水体的污染负荷，保护和改善水环境，必须建立基于工业过程、工业场所和水环境特点的水质管理体系。本研究的目的是针对各产业的特性，开发水处理系统、生产系统及用水系统的整合系统。具体目的是：1）开发crireeia，选择现场单独处理废水或改进废水联合处理，以减少总排放量，2）评估各种工业废水的传统碳，氮和磷去除工艺，3）损失处理和替代工艺的可能性，以最大限度地减少负荷，（4）节能节材对污染负荷的影响。通过对各行业污染物排放情况的全面调查，明确了各行业的规模和区位差异，并分析了污染物排放的原因。调查点是：1）工业的规模、分布和位置; 2）工业现有的废水处理和废水管理系统，作为规模的函数; 3）废水质量的表征。调查通过人口普查和实地调查进行。在调查研究的基础上，对污水处理技术和中水回用系统进行了研究。探讨了基于污水处理回用系统的污染物零排放工艺，以保护水环境。

Water quality management system based on characteristics of industrial processes, their location and water environment is necessary to reduce loading of pollutants into water bodies and to protect and improve water environment. The purpose of this study is to develop on integrated system of water treatment system, procuction systen and water use system taking characteristic features of each industry. Specific purposes were 1) development of crireeia on the choice of separate treatment of wastewaters on-site or improvement of combined treatment of wastewaters to reduce total discharge, 2) evaluation of conventional, carbon, nitrogen and phosphorus removal processes for wastewaters from various industries, 3) possibility of elosed processing and alternative processes to minimize loading, and 4) effects of energy and materials savings on pollution loading.We focused our sttention to pollution loading from different industries. Comprehensive survey on pollution discharges from various industries were carried out to clarify the difference between the size and location of industries and analyzed the cause of discharge. Survey points are 1) size, distribution, location of industries, 2) existing wastewater treatment and wastewater management systems of industries as a function of size, and 3) characterization of wastewater quality. Surveys were carried out by census and field surveys. Based on surveys, studies on wastewater and water treatment technologies ans water reuse system were carried out. Zero emission process for pollution loads to protect water environment based on wastewater treatment and reuse system were discussed.