Not long ago, the opening ceremony of the Winter Olympic Games 24 solar terms countdown video also vividly in mind, today the rain solar term has quietly come. As the second solar term, it represents the beginning of continuous rain. For environmentalists, heavy rainfall increases the risk of water pollution. When it comes to the risk of water pollution from rainwater, one must first mention the need to "water".
As we all know, the current "circular economy" is still increasing, as an important part of the circular economy, water resources naturally become a necessary element in the sewage treatment industry. It is flooding into all walks of life, become one of the indicators in the process of green and sustainable development of all walks of life.
Since we want to go the way of water resources, we can not let rain fall naturally. Rainwater into resources, rainwater collection and reuse has become an important work of sponge city construction. Although it can not be directly used as drinking water, it can also meet people's demand for water resources utilization to a certain extent. Previously, Nanjing tracked rainwater collection systems in 10 new residential areas in the area and found that rainwater recycling equipment helped communities save thousands of tons of water. It can be seen that rainwater collection and utilization has achieved good results and will continue to deepen.
At the beginning of this paper, the risk of water pollution caused by rainfall is largely due to the imperfect construction of China's current pipe network facilities, and leakage of pipe networks in some areas. Therefore, once a large amount of rain begins, the sewer network may be overwhelmed, resulting in water pollution problems.
Fortunately, the demand for water resources is increasing, and the diversion of rain and pollution has also been put on the agenda. At this time, the transformation and upgrading of rain pollution pipe network ushered in speed.
Rainwater diversion can not only improve the inflow concentration of sewage into the sewage plant, improve the work efficiency of the sewage plant, but also help to build a complete channel for rainwater collection and utilization. However, after the diversion of rain and sewage, the rainwater pipeline should be rectified, and the sewage pipeline is the key enclosure for rectification.
Earlier, Yunnan province issued the "14th Five-year Plan" for the construction of Urban sewage treatment and Recycling Facilities, which proposed that during the 14th five-year plan period, the province should add and transform 7,200km of sewage collection network, and realize the full coverage of urban sewage treatment as soon as possible. Speeding up the weak points of sewage pipe network is an important means to reduce the series of pollution risks caused by rainfall.
Guangxi province has said in relevant documents that it plans to invest 21 billion yuan in the construction of sewage pipe network in the new period, build and transform more than 5,000 kilometers of sewage pipe network, and gradually establish a sound green and low-carbon sewage pipe network system. The concept of low-carbon sustainable development goes hand in hand with the construction of sewage network.
Such examples can be found everywhere. I believe that these specific and small goals and tasks will contribute to the successful achievement of pipe network rectification work, and the rectification work of rainwater and sewage pipe network will also usher in leapfrog progress.