| Approaches to municipal wastewater irrigation and environmental protection |
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| 作者姓名： | Gao Zhengmin |
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| 作者单位： | Gao ZhengminInstitute of Applied Ecology，Academia Sinica，Shenyang，China |
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| 摘 要： | To reuse the water and nutrient resources from ecological point of view the goals, criteria and constraint conditions of the scientifically municipal wastewater irrigation are discussed as well as the practice in major municipal wastewater irrigation areas in China is introduced, of which particularly the effects of municipal water irrigation mixing with oil refinery wastewater on the agricultural ecosystem are studied and described. It has been revealed that benzo(a)pyrene in various parts of paddy crop is attributed to air pollution, water-soil pollution and biosynthesis of plant. Of exogenous contributions of benzo(a)pyrene in paddy shoot system under natural condition, the dominant factor is the air pollution, whereas the water-soil factor is considered to be secondary. Therefore, it is mostly urgent to control the air pollution source of benzo(a)pyrene, to which the edible parts of various green plants are exposed directly.
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Approaches to municipal wastewater irrigation and environmental protection |
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| Gao Zhengmin.Approaches to municipal wastewater irrigation and environmental protection[J].Journal of Environmental Sciences,1990,2(2):63-70. |
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| Authors: | Gao Zhengmin |
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| Institution: | Institute of Applied Ecology;Academia Sinica;Shenyang;China |
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| Abstract: | To reuse the water and nutrient resources from ecological point of view the goals, criteria and constraint conditions of the scientifically municipal wastewater irrigation are discussed as well as the practice in major municipal wastewater irrigation areas in China is introduced, of which particularly the effects of municipal water irrigation mixing with oil refinery wastewater on the agricultural ecosystem are studied and described. It has been revealed that benzo(a)pyrene in various parts of paddy crop is attributed to air pollution, water-soil pollution and biosynthesis of plant. Of exogenous contributions of benzo(a)pyrene in paddy shoot system under natural condition, the dominant factor is the air pollution, whereas the water-soil factor is considered to be secondary. Therefore, it is mostly urgent to control the air pollution source of benzo(a)pyrene, to which the edible parts of various green plants are exposed directly. |
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| Keywords: | municipal wastewater irrigation land treatment system benzo(a)pyrene pollution ecological engineering |
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