Pipeline secondary pollution prevention measures

Technical pollution pipeline secondary pollution prevention measures for water pollution caused by secondary water supply due to pipeline fouling, in addition to improving the treatment process, improving the quality and stability of the effluent, and strengthening the management of the secondary water supply facilities, Control measures: implement the technology of non-stop water opening of the pipeline and cancel the reserved mouth. In the past, in the design and construction, in order to facilitate the user to receive water, it is often necessary to set a reserved port at a certain distance. However, the provision of too many reserved ports on the water supply network will bring many problems. The idleness of the reserved outlets of the pipe network is not only a waste of pipeline construction, but also the deterioration of the retained water near the reserved port will also affect the pipe. Net water quality. Non-stop water opening technology is an important measure to apply new technology to protect water quality. On the one hand, it can avoid the waste of water resources caused by water stoppage, and on the other hand, it can avoid secondary pollution caused by water stoppage. With the improvement of the non-stop water opening technology, the reserved port can be eliminated in the water supply network, and the non-stop water opening technology is needed to solve the user's water receiving problem when the branch pipe is connected.

Reasonably develop the pipe network flushing plan. Pipe network flushing mainly uses fire hydrants and drainage gates. For example, from the main pipe to the fire hydrant, there are usually “dead water” pipes of 5~10m. Therefore, fire hydrants must be discharged regularly (Yancheng Water Division stipulates: fire hydrants must be discharged every six months) One owed, and temporary discharge measures were formulated as appropriate. For the end of the pipe network, the community where the residents are concentrated, and the areas where the users complain about poor water quality, in addition to the additional drainage gates, the corresponding flushing interval should be continually explored to flush the pipe network. The flushing should be carried out in one direction, that is, when the flushing is performed, the one end valve is closed, so that the one-way water is supplied and then the other end valve is closed, and the other pipe section is flushed. The water pollution caused by the water stoppage of the residential pipeline should be properly flushed after repairing, and the newly laid pipeline must be carefully washed and disinfected before it is connected to the grid.

Strengthen pipe network inspection and occupation work. According to statistics, in 2000, the leakage rate of tap water in Yancheng Water Division was 13.6%. The difference in production and sales was about 14.5%. There is still potential for digging leaks. Leakage wastes water resources and wastes construction costs and water supply costs of water supply equipment, and may also cause secondary disasters. Strengthening the inspection and maintenance work of the pipeline network should not only be recognized from the strategic height of increasing production and saving, but also conducive to the sustainable use of water resources. It must also be implemented as an important issue.

(Provided by Yao Dong, Yancheng Water Supply Company, Jiangsu Province)

Surface Mounted Emergency Spotlight

Surface Mounted Emergency Spotlight,Ip65 Led Street Light,Suface Mounted Spotlight,Surface Mounted Spotlights

Effort Semiconductor Lighting Ltd. , https://www.effortem.com