Advance in Sewage Irrigation Safety Research and Proposal Countermeasure in China

The domestic and overseas development and research advance of sewage irrigation are introduced in this paper.The existing problems and the serious situation of the sewage irrigation of China are also analyzed.At present,the sewage irrigation water quality fails to meet the standard.The main reasons for this include the low wastewater treatment rate,less-advanced sewage treatment technology,the lack of the necessary sewage pretreatment measures,the lack of appropriate technology of sewage irrigation and irrigation system,and the inadequate sewage irrigation management regulation.The effective way to improve the safety of sewage irrigation is to push forward the pretreatment technology of sewage and to combine the sewage treatment technology with suitable irrigation ways.Through these measures,the safe use of sewage recycle treatment will be realized,the ecological environment will be improved,and the food security will be ensured.