水污染英文论文

The water resources is short and pollution already threaten seriously our country's survival and The Baoding city is one of national most serious water scarcity This article through carries on the sample investigation to the Baoding moat rivers section, and carries on the crucial target with the related measuring technique the survey, refers to the surface water pollution control standard to judge the rivers whether to be polluted, and proposes the corresponding processing

我给你找，但我现在只告诉你摘要，你若感兴趣，请给我的百度帐号发信息并告诉我你的电子邮箱，保证发送到！文献一：微生物在中水治理中的应用【作者中文名】 王双佳;【作者单位】 山大生命科学学院微生物实验室;【文献出处】 山东环境, Shandong Environment, 编辑部邮箱 2002年 06期 期刊荣誉：CJFD收录刊【摘要】 <正>随着现代工业的迅速发展,城市规模的不断扩大城市用水量和废水量不断增加,造成城市水源水量不足,水质日趋污劣,已成为当今世界各大城市普遍存在的问题。为了解这个问题,世界上许多国家相继开展了污水资源化的研究工作。在研究的基础上,也有不同规模的生产性装置投入使用,有的还将污水处理后的中水,回用于城市自来水的补充水源。城市污水再生回用已显现出开源和控制水污染的双重功能。文献二：水体重金属污染的微生物治理研究与应用 【英文篇名】 Study on the microbial treating heavy-metal-containing water【作者中文名】 陶成; 邓天龙; 李泽琴;【作者英文名】 TAO Cheng; DENG Tian-Long; LI Ze-qin（School of material and biological; Chengdu University of Technology; Chengdu 610059; China）;【作者单位】 成都理工大学材料与生物工程学院; 成都理工大学材料与生物工程学院 四川成都; 四川成都;【文献出处】 化学工程师, Chemical Engineer, 编辑部邮箱 2003年 02期 期刊荣誉：ASPT来源刊 CJFD收录刊【关键词】 重金属; 微生物治理; 水污染;【英文关键词】 heavy metal; mictobial treating; wastewater;【摘要】 本文分析了重金属污染水体的微生物治理的原理及微生物技术在水体重金属污染治理中的应用 ,概述了该领域中基因工程、酶和细胞的固定化技术以及生物吸附剂的研究进展 ,提出了污染水体的微生物治理研究方向。【英文摘要】 This paper analyses theory and application of microbial treating heavy-metal-containing Sums up development of genic Engineering,enzyme and cell fixed technology and bioloical sorbent in this field,bring forward the research direction of treating the heavy-metal-containing

Water pollutionWater pollution is a major problem in the global It has been suggested that it is the leading worldwide cause of deaths and diseases, and that it accounts for the deaths of more than 14,000 people An estimated 700 million Indians have no access to a proper toilet, and 1,000 Indian children die of diarrheal sickness every Some 90% of China's cities suffer from some degree of water pollution, and nearly 500 million people lack access to safe drinking In addition to the acute problems of water pollution in developing countries, industrialized countries continue to struggle with pollution problems as In the most recent national report on water quality in the United States, 45 percent of assessed stream miles, 47 percent of assessed lake acres, and 32 percent of assessed bay and estuarine square miles were classified as pollutedWater is typically referred to as polluted when it is impaired by anthropogenic contaminants and either does not support a human use, like serving as drinking water, and/or undergoes a marked shift in its ability to support its constituent biotic communities, such as Natural phenomena such as volcanoes, algae blooms, storms, and earthquakes also cause major changes in water quality and the ecological status of Causes of water pollutionThe specific contaminants leading to pollution in water include a wide spectrum of chemicals, pathogens, and physical or sensory changes such as elevated temperature and While many of the chemicals and substances that are regulated may be naturally occurring (calcium, sodium, iron, manganese, ) the concentration is often the key in determining what is a natural component of water, and what is a Oxygen-depleting substances may be natural materials, such as plant matter ( leaves and grass) as well as man-made Other natural and anthropogenic substances may cause turbidity (cloudiness) which blocks light and disrupts plant growth, and clogs the gills of some fish Many of the chemical substances are Pathogens can produce waterborne diseases in either human or animal Alteration of water's physical chemistry includes acidity (change in pH), electrical conductivity, temperature, and Eutrophication is an increase in the concentration of chemical nutrients in an ecosystem to an extent that increases in the primary productivity of the Depending on the degree of eutrophication, subsequent negative environmental effects such as anoxia (oxygen depletion) and severe reductions in water quality may occur, affecting fish and other animal