Shenzhen Shafu River Water Quality Improvement Service Project Governance scale: The total length is 11.17 kilometers, and the watershed area is 16.62 square kilometers. Technical route: sewage interception along the river + air flotation treatment + biochemical treatment + artificial oxygen. Goal of treatment: When the sewage interception along the river in the comprehensive improvement project of Shafu River is completed, all indicators will reach the standard of better than mild black odor.