新闻动态
污染成因
人类生产活动造成的水体污染中，工业引起的水体污染最严重。如工业废水，它含污染物多，成分复杂，不仅在水中不易净化，而且处理也比较困难。
Among the water pollution caused by human production activities, water pollution caused by industry is the most serious. For example, industrial wastewater, which contains many pollutants and complex components, is not only difficult to purify in water, but also difficult to treat.
工业废水，是工业污染引起水体污染的最重要的原因。它占工业排出的污染物的大部分。工业废水所含的污染物因工厂种类不同而千差万别，即使是同类工厂，生产过程不同，其所含污染物的质和量也不一样。工业除了排出的废水直接注入水体引起污染外，固体废物和废气也会污染水体。
Industrial wastewater is the most important cause of water pollution caused by industrial pollution. It accounts for most of the pollutants discharged by industry. The pollutants contained in industrial wastewater vary greatly according to the types of factories. Even in similar factories, the quality and quantity of pollutants are different due to the different production processes. In addition to the pollution caused by the direct injection of industrial waste water into the water body, solid waste and waste gas also pollute the water body.
农业污染首先是由于耕作或开荒使土地表面疏松，在土壤和地形还未稳定时降雨，大量泥沙流入水中，增加水中的悬浮物。
Agricultural pollution is first caused by the loosening of the land surface caused by cultivation or reclamation. When the soil and topography are not stable, a large amount of sediment flows into the water, increasing the suspended matter in the water.
还有一个重要原因是农药、化肥的使用量日益增多，而使用的农药和化肥只有少量附着或被吸收，其余绝大部分残留在土壤和漂浮在大气中，通过降雨，经过地表径流的冲刷进入地表水和渗入地表水形成污染。
Another important reason is the increasing use of pesticides and fertilizers, while only a small amount of pesticides and fertilizers are adsorbed or absorbed, and most of the remaining residues are in the soil and floating in the atmosphere, through rainfall, through the erosion of surface runoff into surface water and infiltration into surface water to form pollution.
城市污染源是因城市人口集中，城市生活污水、垃圾和废气引起水体污染造成的。城市污染源对水体的污染主要是生活污水，它是人们日常生活中产生的各种污水的混合液，其中包括厨房、洗涤房、浴室和厕所排出的污水。
Urban pollution sources are caused by urban population concentration and water pollution caused by qingxiji.89ix.comdipingy.89ix.commojuhpz.37ix.com.cnmojusn.37ix.com.cn zhagun.37ix.com.cnwantoun.37ix.com.cnurban domestic sewage, garbage and exhaust gas. Urban pollution sources are mainly domestic sewage, which is a mixture of various sewage produced in people's daily life, including sewage discharged from kitchen, washing room, bathroom and toilet.
世界上仅城市地区一年排出的工业和生活废水就多达500立方公里，而每一滴污水将污染数倍乃至数十倍的水体。
In the world, industrial and domestic wastewater discharged in urban areas alone can reach up to 500 cubic kilometers a year, and every drop of wastewater will pollute water bodies several or even tens of times.
Among the water pollution caused by human production activities, water pollution caused by industry is the most serious. For example, industrial wastewater, which contains many pollutants and complex components, is not only difficult to purify in water, but also difficult to treat.
工业废水，是工业污染引起水体污染的最重要的原因。它占工业排出的污染物的大部分。工业废水所含的污染物因工厂种类不同而千差万别，即使是同类工厂，生产过程不同，其所含污染物的质和量也不一样。工业除了排出的废水直接注入水体引起污染外，固体废物和废气也会污染水体。
Industrial wastewater is the most important cause of water pollution caused by industrial pollution. It accounts for most of the pollutants discharged by industry. The pollutants contained in industrial wastewater vary greatly according to the types of factories. Even in similar factories, the quality and quantity of pollutants are different due to the different production processes. In addition to the pollution caused by the direct injection of industrial waste water into the water body, solid waste and waste gas also pollute the water body.
农业污染首先是由于耕作或开荒使土地表面疏松，在土壤和地形还未稳定时降雨，大量泥沙流入水中，增加水中的悬浮物。
Agricultural pollution is first caused by the loosening of the land surface caused by cultivation or reclamation. When the soil and topography are not stable, a large amount of sediment flows into the water, increasing the suspended matter in the water.
还有一个重要原因是农药、化肥的使用量日益增多，而使用的农药和化肥只有少量附着或被吸收，其余绝大部分残留在土壤和漂浮在大气中，通过降雨，经过地表径流的冲刷进入地表水和渗入地表水形成污染。
Another important reason is the increasing use of pesticides and fertilizers, while only a small amount of pesticides and fertilizers are adsorbed or absorbed, and most of the remaining residues are in the soil and floating in the atmosphere, through rainfall, through the erosion of surface runoff into surface water and infiltration into surface water to form pollution.
城市污染源是因城市人口集中，城市生活污水、垃圾和废气引起水体污染造成的。城市污染源对水体的污染主要是生活污水，它是人们日常生活中产生的各种污水的混合液，其中包括厨房、洗涤房、浴室和厕所排出的污水。
Urban pollution sources are caused by urban population concentration and water pollution caused by qingxiji.89ix.comdipingy.89ix.commojuhpz.37ix.com.cnmojusn.37ix.com.cn zhagun.37ix.com.cnwantoun.37ix.com.cnurban domestic sewage, garbage and exhaust gas. Urban pollution sources are mainly domestic sewage, which is a mixture of various sewage produced in people's daily life, including sewage discharged from kitchen, washing room, bathroom and toilet.
世界上仅城市地区一年排出的工业和生活废水就多达500立方公里，而每一滴污水将污染数倍乃至数十倍的水体。
In the world, industrial and domestic wastewater discharged in urban areas alone can reach up to 500 cubic kilometers a year, and every drop of wastewater will pollute water bodies several or even tens of times.