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This work is based on the starting point of water circulation and sustainable development. It is intended to solve the problems of large water consumption of washing machine, direct inflow of clean mode water resources into sewer, secondary pollution of water resources and domestic sewage. The filter pipe set in the middle can filter foreign matters, peculiar smell and fine bacteria in the water, reduce water consumption, save water, and realize the recycling of water resources. Dirty water flows into the sewer from the left to reduce the discharge of water resources
Yibin City, China