深圳河湾水系生态需水的污水资源化

以深圳河湾水系为例,探讨以污水资源化再生水满足城市水系生态需水的方法。该方法统一考虑河流的水量水质需求,计算不同截污率和补水水质条件下河流的生态需水量;根据生态用水的供需平衡情况,确定污水资源化规模与水质要求。在此基础上,设计污水资源化的处理工艺以及再生水厂等的分布;并通过数学模型预测补水方案对水环境改善的效果。本研究为面向城市水系生态补水的污水资源化工程规划提供了科学的方法。

Wastewater recycling for ecological water demand of Shenzhen River-Bay system

For the ease of the Shenzhen River-Bay system, a wastewater recycling method that satisfies urban ecological water demand was proposed. Taking the water quantity and water quality into consideration, the method can be used to calculate ecological water demand under different sewage interception rates and with replenishing water of different qualifies. The treatment scale and water quality target of reclaimed water are determined according to the supply and demand of ecological water. The treatment technology and the distribution Of treatment plants are designed. Furthermore, a mathematical model is applied to predicting the effect of water replenishing schemes on water environment improvement. This research provides a scientific method for planning wastewater recycling to replenish ecological water in urban river systems.