基于水产养殖废水净化的生态湿地修复工程:以江苏东台市沿海淡水养殖区为例

Ecological Wetland Restoration Project Based on Aquaculture Wastewater Purification:A Case Study of Coastal Freshwater Aquaculture Area in Dongtai City,Jiangsu Province

我国水产养殖业发达,每年排放大量养殖废水,对生态环境产生较大压力。实施生态湿地修复工程,采用生态净化方式处理养殖尾水,处理成本低,适合处理大量的轻污染养殖尾水。以江苏东台市沿海淡水养殖区为例,针对研究区水体污染严重、湿地退化的问题,基于水质净化、鸟类生境修复目标,设计生态湿地修复工程。本工程设计构建湿地净化功能区,净化鱼塘尾水水质;修复多样的湿地生境,为滨海鸟类提供适宜的栖息环境。通过修复工程提高生态湿地水质净化与物种保育功能,确保出海口水质满足排放标准,从而为采用生态湿地修复工程净化水产养殖废水提供理论与实践参考。

China's aquaculture industry is developed,with a large amount of aquaculture wastewater discharged every year,causing great pressure on the ecological environment.The ecological wetland restoration project is carried out to purify the aquaculture tail-water,which has low treatment cost and is suitable for treating a large number of those lightly polluted.This paper takes the freshwater aquaculture area of Dongtai City,Jiangsu province as an example.To address the problem of serious water pollution and wetland degradation in the research area,an ecological wetland restoration project is designed based on the objective of water purification and bird habitat restoration.To purify the fish pond tail-water,wetland purification functional zone is constructed and diverse wetland habitats are restored for coastal birds.Through the restoration project,wetland function of water purification and species conservation is enhanced and the discharge standards of outlet water quality is met,which provides theoretical and practical evidences to carry out ecological wetland restoration project to purify aquaculture wastewater.