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污水来源
根据污水来源的观点，污水可以定义为从住宅、机关、商业或者工业区排放的与地下水、地表水、暴风雪等混合的携带有废物的液体或者水。污水由许多类别，相应地减少污水对环境的影响也有许多技术和工艺。按照污水来源，污水可以分为这四类。
Category I: Industrial wastewater comes from wastewater from manufacturing, mining and industrial production activities, including runoff leachate from industrial or commercial storage and processing, and other wastewater that is not domestic wastewater.
第二类：生活污水 来自住宅、写字楼、机关或相类似的污水；卫生污水；下水道污水，包括下水道系统中生活污水中混合的工业废水。
The second category: domestic sewage comes from residential, office, office or similar sewage; sanitary sewage; sewage, including mixed industrial wastewater in sewage system.
第三类：商业污水 来自商业设施而且某些成分超过生活污水的无毒、无害的污水[2]。如餐饮污水。洗衣房污水、动物饲养污水，发廊产生的污水等。
Category III: Commercial sewage comes from commercial facilities and some components exceed those of domestic sewage in terms of toxic and harmless sewage [2]. Such as restaurant sewage. Washing room sewage, animal breeding sewage, hair salon sewage, etc.
第四类：表面径流 来自雨水、雪水、高速公路下水，来自城市和工业地区的水等等，表面径流没有渗进土壤，沿街道和陆地进入地下水。
Category 4: Surface runoff comes from rainwater, snow water, highway water, water from urban and industrial areas, etc. Surface runoff does not penetrate into soil, and enters groundwater along streets and land.
According to the viewpoint of the source of sewage, sewage can be defined as liquid or water with www.qinhuandaobanjia.cnwww.chengshidiaos.cnwww.penquandiaosu.com.cnwww.hanbaiyulangan.cn
www.shidiaopixiu.cnwww.huganqii.cnwaste, which is discharged from residential, government, commercial or industrial areas and mixed with groundwater, surface water, snowstorms, etc. There are many types of sewage, and there are many technologies and processes to reduce the environmental impact of sewage accordingly. According to the source of sewage, sewage can be divided into four categories.
第一类：工业废水 来自制造采矿和工业生产活动的污水，包括来自与工业或者商业储藏、加工的径流活渗沥液，以及其它不是生活污水的废水。Category I: Industrial wastewater comes from wastewater from manufacturing, mining and industrial production activities, including runoff leachate from industrial or commercial storage and processing, and other wastewater that is not domestic wastewater.
第二类：生活污水 来自住宅、写字楼、机关或相类似的污水；卫生污水；下水道污水，包括下水道系统中生活污水中混合的工业废水。
The second category: domestic sewage comes from residential, office, office or similar sewage; sanitary sewage; sewage, including mixed industrial wastewater in sewage system.
第三类：商业污水 来自商业设施而且某些成分超过生活污水的无毒、无害的污水[2]。如餐饮污水。洗衣房污水、动物饲养污水，发廊产生的污水等。
Category III: Commercial sewage comes from commercial facilities and some components exceed those of domestic sewage in terms of toxic and harmless sewage [2]. Such as restaurant sewage. Washing room sewage, animal breeding sewage, hair salon sewage, etc.
第四类：表面径流 来自雨水、雪水、高速公路下水，来自城市和工业地区的水等等，表面径流没有渗进土壤，沿街道和陆地进入地下水。
Category 4: Surface runoff comes from rainwater, snow water, highway water, water from urban and industrial areas, etc. Surface runoff does not penetrate into soil, and enters groundwater along streets and land.