宁德中心城区水系存在问题及生态治理思路探索

Exploration of Problems and Ecological Governance in the Water System of Ningde Central Urban Area

本文分析了宁德市中心城区水系存在的问题,在提出控源截污清淤的同时,着重研究了生态补水的必要性,并以宁德市行之有效的小规模人工湿地净化处理和经验证可行的跌水曝气为主要治理手段,结合宁德地理地貌实际,针对性地提出了回用提升污水处理厂尾水、采取生态湿地净化或跌水曝气方式来实现水系的生态补水,改善水系水体质量,可为相似城镇污水治理或生态补水提供参考。

This article analyzes the problems existing in the water system of the central urban area of Ningde City.While proposing source control,sewage interception,and dredging,it focuses on the necessity of ecological water replenishment.Taking the effective small-scale artificial wetland purification treatment and the verified feasible drop water aeration as the main treatment methods in Ningde City,combined with the actual geographical and geomorphic conditions of Ningde,it proposes to reuse and enhance the tail water of sewage treatment plants,adopt the methods of ecological wetland purification or drop water aeration to achieve ecological water replenishment of the water system,which improve the quality of the water system.This article provides reference for similar urban sewage treatment or ecological water replenishment.