Middle water reuse is important to save water resource due to scarcity of water resource in Shenzhen city.
深圳市水资源严重短缺，中水回用对于节约水资源有着重要的意义。
Wastewater minimization is an environmental problem through improving the process to fully minimize wastewater so as to save water resource.
废水量最小化是通过改进流程尽量减少废水生成量而节约水资源的环保课题。
The utilization of oilfield produced water after the treatment has been an important way to save water resource and reduce environmental pollution.
采油污水经处理后资源化利用，成为节省水资源、减少环境污染的一个重要途径。
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