污水灌溉的思考

Consideration on Sewage Irrigation

随着农业灌溉水资源的日益紧缺,污水灌溉在我国普遍存在。在简要回顾国内外污水灌溉发展的历史与现状的基础上,从污水灌溉的农业效益、治污效应、经济效益等方面分析了污水灌溉的优势,同时,也指出了污水灌溉潜在的危害,不合理的污水灌溉易引起水土环境恶化、农产品品质下降。从缓解农业用水紧缺,解决水污染等方面分析,认为污水资源化是未来灌溉发展的必然趋势。因此,应当正确认识污水灌溉"堵"与"疏"的问题,引导污水灌溉的规范化、科学化、健康化发展。

Because of the scarcity of water resources for irrigation, sewage irrigation has been applied widely in China. Based on the review of the development process and status quo of sewage irrigation, the advantages of sewage irrigation were analyzed from the aspects of agricultural benefit, effect of pollution control and economic benefit in this paper. Moreover, the potential harms of sewage irrigation were presented, too. Unreasonable sewage irrigation will result in environment deterioration and crop quality descending. Through the analysis of the solution for scarcity and pollution of water resources, this paper pointed out that wastewater reclamation was the future development tendency of irrigation. So, we should correctly consider the problem of block or dredge of sewage irrigation, and realize the standard, scientific and successive development of sewage irrigation.