That is, those manhole covers on the road, some are manhole covers, some are digging wells, and some are pipes with deeper bottoms than horizontal.

Things that will precipitate, such as sand and stones in the water, will rush into the well and fall to a place lower than the pipeline, so they will not stay in the pipeline to prevent those things from precipitating into the pipeline and preventing blockage. Workers will clean up regularly.

The grit chamber is mainly used in the drainage pipe line to deposit sand, silt and garbage in the drainage pipe of the well, which is convenient for cleaning and keeps the pipeline unblocked.

Generally, there is a common water outlet in the community.

The grit chamber is mainly used in the drainage pipeline to precipitate sand, silt and garbage in the drainage pipeline, which is convenient for cleaning and keeps the pipeline unblocked.

Extended data;

Rainwater collection pond refers to a pond for collecting rainwater, which consists of a pond body, a sump inlet and outlet well, a high and low aeration cap, a sump inlet and outlet pipe, a sump overflow pipe and a sump aeration system.

High reliability, strong anti-interference ability, fully automatic operation, stable remote control operation, simple maintenance, good treatment effect, stable effluent quality, low power consumption, compact treatment structure, small floor space, high greening rate and beautiful appearance. The shortage of water resources has become a worldwide problem.

When the traditional way of water resources development can no longer increase the water source, rainwater recycling has become an economical and practical way of water resources development. As a non-traditional resource, rainwater has many functions: saving water and alleviating water crisis. The combination of rainwater collection system technology and housing construction will greatly change our life of sighing at the sky because of the depletion of water resources.

Reference materials; Baidu Encyclopedia-Shenshajing