黄河流域城镇生活污水回用农业的潜力和对策

黄河流域是我国典型的干旱和半干旱地区,流域缺水、支流水质污染和污水灌溉面积的增加对环境、农业生产和农产品安全造成了潜在的威胁。适当处理的城镇生活污水是一种稳定的水资源、在很大程度上缓解水资源的紧缺状况,利用污水资源的主要用途之一是灌溉农田。处理后的城镇生活污水回用农业的潜力极大、具有经济、环境和社会效益。然而,城镇生活污水对人类健康和环境(地下水和地表水)可以造成潜在的影响、必须制定处理后回用农业的标准、使用技术和管理规范。

Potentiality and Strategy of Municipal Sewage Reuse for Agricultural Irrigation in Yellow River Valley.

Yellow river valley is typical arid and semiarid region in China.Shortage of water,pollution of tributary waters and incretion of sewage irrigation for farmland make the potentiality impact on environment and safety of agricultural products.Proper disposed municipal sewage(reclaimed wastewaters) can be used for stable water resources and relieve the shortage of water resources,and the most important is to be used for agricultural irrigation.Municipal sewages contain a wide variety of unregulated chemical constituents and pathogenic organisms that can represent significant threats to both surface water and groundwater quality.The criteria,guideline,treatment technology and management of sewage reuse for agricultural irrigation must be developed.