畜禽养殖废水还田的环境影响分析

Environmental impact analysis of livestock and poultry farm wastewater returned to the field

规模化、集约化的养殖场的发展既带动了经济产业也增加了环境风险,一旦发生环境事故其影响范围及危害难以估量。应生产实际的需求,畜禽养殖中会添加重金属及抗生素等辅料,此类物质被生物体吸收的效率低,加上国内普遍采用的废水处理工艺对重金属及抗生素处理效果不一,因此废水还田存在重金属及抗生素的环境风险。

The development of large-scale and intensive farms not only drives the economic industry,but also increases the environmental risk,and the scope and harm of environmental accidents are incalculable.Should produce the actual demand,livestock and poultry breeding will add heavy metals and antibiotics and other accessories,such substances are absorbed by organisms inefficient,coupled with the widespread use of wastewater treatment process on heavy metals and antibiotics treatment effect is not the same,so the waste water also exists in the field of heavy metals and antibiotics environmental risks.