Question

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污水，通常指受一定污染的、来自生活和生产的废弃水。污水主要有生活污水，工业废水和初期雨水。污水的主要污染物有病原体污染物， 耗氧污染物，植物营养物，有毒污染物等。
水体污染的危害是多方面的，这里简单介绍一下水体污染对人体健康的影响。
引起急性和慢性中毒
致癌作用
发生以水为媒介的传染病

主要污染物的影响：
铅: 对肾脏、神经系统造成危害，对儿童具高毒性，致癌性已被证实
镉: 对肾脏有急性之伤害
砷: 对皮肤、神经系统等造成危害，致癌性已被证实
汞: 对人体的伤害极大，伤害主要器官为肾脏、中枢神经系统
硒: 高浓度会危害肌肉及神经系统 亚硝酸盐: 造成心血管方面疾病，婴儿的影响最为明显(蓝婴症)，具致癌性
总三卤甲烷: 以氯仿对健康的影响最大，致癌性方面最常发生的是膀光癌
三氯乙烯（有机物）: 吸入过多会降低中枢神经、心脏功能，长期暴露对肝脏有害
四氯化碳（有机物）: 对人体健康有广泛影响，具致癌性，对肝脏、肾脏功能影响极大

Answer 1

Sewage, usually refers to water which is certainly polluted, abandoned from life and industry. The sewage mainly includes the sanitary sewage, the industrial waste and the initial period rain water. The sewage main pollutant has the pathogen pollutant, consumes the oxygen pollutant, the plant nourishing substance, virulent pollutant and so on.The harm of sewage to our body is various, here introduces simply how the water influence human health .
causes acute and chronic is poisoned
carcinogenesis
occur take the water as medium infectious disease
the main pollutant influence:
lead: To the kidney, the nervous system cause the harm, has toxic to the child, the carcinogenicity was confirmed
cadmium: Has the acute injury to the kidney
arsenic: To the skin, the nervous system and so on cause the harm, the carcinogenicity were confirmed
mercury: To human body's wound sewageinfluence

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Answer 2

Sewage, usually refers to the extent of the pollution from life and production, the waste water. Sewage are mainly sewage, industrial wastewater and the early rain. The main pollutants have pathogen water pollutants, oxygen, and plant nutrients, toxic pollutants pollutants, etc.
Water pollution hazard is various, here is simple to introduce water pollution on human health.
Cause of acute and chronic poisoning
The effect that cause cancer
Happen to water mediated diseases

The main pollutant effect:
Lead to kidney and nervous system: the damage of children, with high toxic, carcinogenicity has been confirmed
Cadmium in the acute kidney is: the damage
Arsenic: to skin, neurological damage etc, carcinogenicity has been confirmed
Hg: damage to human body, main organ for kidney damage, the central nervous system
A -se: high will harm muscles and nerves system nitrite in cardiovascular diseas...希望帮到你

Answer 3

Sewage, usually refers to the extent of the pollution from life and production, the waste water. Sewage are mainly sewage, industrial wastewater and the early rain. The main pollutants have pathogen water pollutants, oxygen, and plant nutrients, toxic pollutants pollutants, etc.
Water pollution hazard is various, here is simple to introduce water pollution on human health.
Cause of acute and chronic poisoning
The effect that cause cancer
Happen to water mediated diseases

The main pollutant effect:
Lead to kidney and nervous system: the damage of children, with high toxic, carcinogenicity has been confirmed
Cadmium in the acute kidney is: the damage
Arsenic: to skin, neurological damage etc, carcinogenicity has been confirmed
Hg: damage to human body, main organ for kidney damage, the central nervous system
A -se: high will harm muscles and nerves system nitrite in cardiovascular diseas...