CONSTRUCTION OF LOW ENVIRONMENTAL IMPACT PROCESSES TO MINIMIZE THE EMISSION OF POLLUTANTS TO THE WATER ENVIRONMENT.

这项研究的目的是阐明如何构建低环境影响的工业过程，以最大限度地减少污染物对水环境的排放。我们调查了汽车制造、印染、发电、钢铁、炼油、石油化工、食品加工、造纸等行业的用水量和废水量、污染物的量和浓度、废水处理性能、化学品使用量等。在调查的基础上，我们建立了一个数据库，并试图阐明建设低排放工艺的途径。我们将这些策略归纳为以下几类：1)通过改进生产工艺来消除污染物的排放；2)通过改进废水处理来消除污染物的排放；2)通过改进废水处理来消除污染物的排放；3)建立基于新概念的流程(如充分利用材料投入、产业间材料再利用等)。针对这9个行业，明确了基于现有技术的污染物排放消除途径和研究需求。

AIM OF THIS STUDY IS TO CLARIFY THE WAY TO CONSTRUCT LOW ENVIRONMENTAL IMPACT INDUSTRIAL PROCESSES TO MINIMIZE THE EMISSION OF POLLUTANTS TO THE WATER ENVIRONMENT.INDUSTRIES THAT WE PICKED UP WERE ; AUTOMOBILE MANUFACTURING,DYEING INDUSTRY POWER GENERATION PLANTS,STEAL INDUSTRY,PETROLEUM REFINING,PETRO-CHEMICAL INDUSTRY,FOOD PROCESSING INDUSTRY,AND PAPER-PULP INDUSTRY.WE INVESTIGATED THE AMOUNT OF WATER USE AND WASTE WATER,AMOUNT AND CONCENTRATION OF POLLUTANTS FROM THE PROCESSES,PERFORMANCE OF WASTE WATER TREATMENT,HOW MUCH CHEMICALS ARE USED IN WHICH UNIT,ETC.WE MADE A DATABASE BASED ON THE INVESTIGATION.AND THEN,WE TRIED TO CLARIFY THE WAY TO CONSTRUCT THE LOW EMISSION PROCESSES.WE SUMMARIZE THE TACTICS INTO FOLLOWING CATEGORIES,1)ELIMINATION OF POLLUTANTS EMISSION BY THE IMPROVEMENT OF THE PRODUCTION PROCESS,2)BY IMPROVEMENT OF WASTE WATER TREATMENT,3)CONSTRUCTION OF PROCESS BASED ON NEW CONCEPT(SUCH AS THE FULL USE OF THE MATERIAL INPUT,INTER INDUSTRIAL MATERIAL REUSE,ETC.).FOR THESE NINE INDUSTRIES,WE CLARIFIED THE WAY TO ELIMINATE THE POLLUTANTS EMISSION BASED ON THE TECHNOLOGY NOW AT HAND,AND THE RESEARCH NEEDS.