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On the wastewater irrigation


00 kg stone home to the Portland City clamor annual debate amnesty l billion tons of sewage, and basic foot with the right foot irrigated farmland for agricultural production each year is equivalent to providing more than thirty thousand t he fat, that is, move to a clamor when producing 20 kg of ammonium sulfate fertilizer plant. Other tests by the city's sewage irrigation also showed that the increase of sewage irrigation on paddy rice,[link widoczny dla zalogowanych], corn, wheat and other food production role, Shanghai, Shijiazhuang and other places with dirty shoes, etc. Since the passage of irrigation water chestnut dish for Kwan, the results are different levels of stimulation . Wastewater irrigation of the main problems are 1. Some factories untreated hazardous waste release urban drainage system, causing damage to sewage irrigated soil, crop death. Which should strengthen the supervision of water quality and management of ear {; 2 pollution in the East source: sewage irrigation of farmland, the sewage irrigation source and ground bearing her commitment table are subject to different sources of pollution. So in the future to strengthen the work of anti-seepage, reduce water leakage. 3. Affect the quality of agricultural products: in some places that wastewater irrigation of rice, sweet potato, cucumber, tomatoes and other crops not taste good, quality. Some local points of agricultural products off testing. Found that some crops in the content of toxic substances has increased more than held before filling. {* And give her the world on the developed countries, supporting projects of sewage irrigation construction in the larger gap. For example, in some places reflected in the weak rain weather sewage irrigation, gas ignorant of the difficult return, impact on the environment. Quarry to be done after the construction of auxiliary projects to improve the management level. 3 Forecast ear tunnel water chestnut water resources projects increasingly valuable, sewage irrigation will become increasingly prevalent, neck in the near future. Sewage will be treated as valuable resources and garbage is recycled again as early as the end of the Special Medical t semi-arid land irrigation sewage will never wake up fully developed, the outlook is very optimistic; in the emerging grasses and the city workers. Rong city sewer with the water in the can as the construction of Dongkeng song can be a lot of commitment, a circular sewage, animal husbandry, processing and agricultural irrigation, sewage Cheng Wang avoid surface contamination tie directly into the rivers, so the order of the limited resources, and prevent the water resources of care wave fireflies, held over two mattresses. Pull out the end of inflammation will deepen the inevitable play of human choice. . However, sewage Jinchu woolen rug is to study more complex problems. On the one hand a large number of sewage glycosides and inorganic hereby soap she is a good fertilizer should be Jun and East sources, can promote the growth of crops Shuo, the purpose of producing up to height. On the other hand, a large number of sewage embarrassed harmful substances that may pollute the underground forever, surface water, soil, for fishing, air, etc.,[link widoczny dla zalogowanych], resulting in agricultural production cuts Fang, and even hoop through the food chain. . Harm to human Jiankang. Dip before melting studies also process sewage immature,[link widoczny dla zalogowanych], especially in systems engineering (that is, the system refuse of economics, engineering, agriculture, leek, microbiology, public health constraints and influencing factors) of the research to be strengthened, can be targeted to treatment and prevention of pollution, reduce the negative benefits, effective and rational use of water. I believe that the future irrigation in Jiangcheng Fan should be enhanced where the following areas: 1. From an economic point of view, of sewage irrigation and fresh water irrigation benefits and costs into account ~ rejection of environmental, biological, economic and other aspects of production and the constraints of sewage irrigation contractors macro decision-making support system, making the eco-system to the positive direction; 2 . Microscopic analysis of sewage irrigation on soil,[link widoczny dla zalogowanych], underground forever, surface water, air, plants and other aspects of pollution and its regularity. And to explore ways and techniques to prevent pollution I · 21 · On the water one evening Gai 3. Relative to the United States to strengthen the interdisciplinary exchange and cooperation, research t Cong units to make fully rational water resources, the application of mattress; 4. Wastewater irrigation is necessary to strengthen research,[link widoczny dla zalogowanych], promote science and technology into productive forces, we must pay attention to learn from foreign advanced experience and technology to pry the cause of our pollution Bei good. Reference. [1] Zheng Zhang explained. Water shortages product section surgery! I1 Wei. Water! Warp density. 19E8 (】) [. ] Sun Guilan and so on. Comments masonry irrigation Taiyuan Lu Yong Transfer Jhushan worse. * 22.1989 on supplement [3] Chinese agricultural Jun Institution Press, 1973 [4] w_ song mL. Chase, h foot of irrigation water in your copy assembly debate. Agriculture ReclaimingWas Ⅷ port inl ~ oerdx. Arhs ~ nm. P'rocoedlngsQfCb closure tnce, Spon30rbythelrrLzationandnageDivislonoftheAmericanSocletyofCivilB1nesanaltO ~ egon5,: c ~ on, ASCE1989. £ 53Te. . keshiA Union na. 1frig state. nwithRecZaimed \