The drain pipe is a new type of seepage drainage plastic pipe which is formed by adding high-density polyethylene (HDPE) and other auxiliaries. The permeable bellows is perforated in the groove, and the needle-punched geotextile is wrapped around the outside of the pipe. Processed. Analysis of the current status of the drainage pipe:
Drainage pipe industry overview and current situation analysis
1. The construction of the pipe network is quite different from that of the developed countries.
From the perspective of medium and long-term development, China's infrastructure construction will gradually catch up with the standards of developed countries. Based on the average population per capita of 4.06m in Germany, Japan and the United States in 2002, based on the urban population in 2012, we calculated that the total length of the drainage network in China should reach 281.19 million km, while the drainage pipe in China in 2012. The length is only 425,600 km, and the gap is as high as 2,836,300 km, which is 5.61 times the difference. Even in Japan, which has a low per capita network of households (due to its small size and large population density), Japan’s per capita pipe length in 2002 was 2.74 m, and the total length of China’s drainage network should reach 1,977,700 km. Compared with the total length of the existing pipe network, there is still a gap of 1,472,100 km, which is about 3.5 times the length of the existing drainage pipe network. It can be seen that there is huge room for growth in China's pipe network in the future.
2. At present, the pipe network has a large number of rain and sewage confluence, and the aging rate is high, resulting in a leakage rate exceeding the standard.
The drainage and sewage system can be divided into several types, such as rain and sewage combined system, complete system of rain and sewage, and incomplete diversion. The rain and sewage diversion separates the rainwater drainage system from the sewage system, which can increase the treatment efficiency, reduce the overall sewage treatment volume, and process and discharge the water to be treated more quickly. Compared with the combined system, the split system has the advantages of low pollution and easy control in later operation, but the investment amount is large.
At present, most of China's regions (except a few large cities) still mainly adopt the drainage system of rain and sewage. In the season of heavy rainfall, the new sewage discharge easily exceeds the designed transport capacity and sewage treatment capacity of the pipe network, resulting in sewage. Overflow, further water pollution and difficulty in draining. In contrast, countries such as the United States, Japan, and Germany basically adopt a distribution system.
3. The ageing of China's tube age is also serious.
According to the statistics of the Ministry of Construction, nearly half of the drainage pipes laid before 2000 in China accounted for 44.97%, and the proportion of drainage pipes before the 1980s also reached 6.93%. However, the quality of pipe network pipes laid in the 70s and 80s was generally poor, and once the operation time exceeded a certain period, the leakage was serious. For industry information on more drains, please see the Drainage Industry Market In-Depth Analysis and Investment Strategy Study Report.