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加强人类经济活动,如果对污水不给以足够注意,就会污染环境,特别是会使水体遭受污染。天然供水源被污水污染是水资源从质量上贫化的主要原因。在净化污水时,常把家庭生活污水与工业污水进行混合。结果净化过的污水,矿化度很高,并含有某种生产所特有的毒害残留物质。在许多情况下,污染物的总含量是如此之高,以致用天然清水将其净化稀释之后,它还不能达到自净的要求。水质低于为保护水体防止污染条例所规定的标准。这
To strengthen human economic activities, if we do not give enough attention to sewage, it will pollute the environment, especially the water body will be polluted. Pollution of natural water supply source is the main reason for water quality degradation. In the purification of sewage, often domestic sewage and industrial wastewater mixed. As a result, the purified effluent is highly salinized and contains residual toxic substances that are specific to a particular production. In many cases, the total content of contaminants is so high that it can not meet the self-purification requirements after it is purified and diluted with natural water. The water quality is lower than the standard set by the pollution prevention regulations for the protection of water bodies. This