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Analysis of the current situation and development trend of C

2019-05-29 17:05 View:
Policy and technology promote the development of sludge treatment and treatment industry. The development of sludge resource is irreversible. In March 2019, the research team of Beijing Forestry University Environmental Research Institute Wang Yili made new achievements in the research of residual activated sludge oxidation conditioning and dehydration, and made urban sewage treatment. The filtration properties of the sludge are significantly improved. In recent years, with the advancement of policies and technologies in the sludge treatment industry, the market size of the sludge disposal and treatment industry has been increasing, and it is expected to break through the bottleneck period and enter the fast lane. In the future development trend, the development of sludge resource is inevitable.



Technology + policy double benefits Industry scale continues to increase
 
In recent years, the rapid development of the economy has also brought more challenges to China's environmental problems. China's environmental problems have been deteriorating, and sludge discharges have also increased. In order to effectively solve the problem of improper sludge disposal, the government has continuously introduced relevant policies. Measures to promote and encourage the development of the sludge treatment industry. Among them, the more important policy in the construction of sludge disposal is the “Notice on the “13th Five-Year Plan” Ecological Environmental Protection Plan issued by the State Council in November 2016. The policy clearly stipulates that the urban black and odorous water body should be rectified and 343 water quality needs to be improved. The control unit focuses on strengthening sewage collection and treatment and heavy pollution water treatment. Strengthen the construction of sewage treatment facilities in cities, county towns and key towns, speed up the collection of pipe network construction, upgrade and renovate sewage treatment plants, and fully meet Class A emission standards.
 
In addition, in June 2018, the State Council issued the "Opinions on comprehensively strengthening the ecological environment protection and resolutely cracking down on the prevention and control of pollution prevention", demanding the implementation of the three-year action of "improving quality and efficiency" in urban sewage treatment, and speeding up the shortcomings of urban sewage collection and treatment facilities. As soon as possible, the sewage pipe network will be fully covered, fully collected and fully treated. To improve the sewage treatment charging policy, all localities should adjust the sewage treatment charging standards as soon as possible according to regulations. In principle, the sewage treatment and sludge disposal facilities should be compensated for normal operation and reasonable profit.
 
In addition to the favorable policies, the continuous breakthrough of technology is also indispensable to the driving of the industry. The problem of sludge treatment is actually to solve the problem of continuously decreasing water content. At present, common sludge treatment methods include deep dewatering, composting, digestion, etc., and final disposal includes land use, incineration, landfill, and the like. Specifically, it can be divided into eight methods, namely general technology, solar sludge drying technology, sludge ionizing radiation treatment technology, microwave technology, ultrasonic treatment sludge technology, bioavailability of heavy metals, plant removal technology, and microbial treatment. Technology, emerging sludge thermal chemical treatment technology, etc.
 
After deep dewatering, the sludge moisture content is about 60%, which can be directly landfilled. In an emergency, it can be mixed in a small amount (along with household garbage), but the current iron salt and lime used for chemical conditioning are mostly, and the inorganic matter is increased. High, the introduction of chloride ions, has a certain impact on the incineration conditions and the furnace itself.
 
Incineration is a practice adopted by foreign developed countries. The effect of incineration technology is significant. The calorific value of sludge can be utilized, but the operating cost is relatively high. At present, domestic research and development. In this method, the sludge can be incinerated separately (a lot of foreign countries, basically no domestic ones), and it can also be mixed with domestic garbage (the most exhaustive emission standard, which can be used in combination with heat source and flue gas purification equipment). Landfill is the easiest method and technically difficult.

Driven by policies and sludge treatment technologies, China's sludge treatment market has also achieved leapfrog growth. According to the statistics of the “In-depth Analysis of China's Sludge Treatment and Disposal and Investment Strategy Planning Analysis Report” issued by the Prospective Industry Research Institute, the market size of China's sludge treatment industry has been rising continuously from 2010 to 2017, from 12.98 billion yuan in 2010 to In 2017, 52.47 billion yuan exceeded 30 billion yuan, 40 billion yuan and 50 billion yuan in 2014, 2016 and 2017 respectively. Although the growth rate of the industry is declining, the overall growth rate is still above 10%. According to this development trend, the market size of China's sludge treatment industry will reach 58.2 billion yuan in 2018.
 
Pollution treatment and disposal should be developed in accordance with principles
 
With the increasing market size, the market capacity is also increasing, and the number of entrants in the industry is increasing, which is easy to threaten the development rules of the industry. In accordance with the requirements of the “Technical Policy for Sludge Treatment and Pollution Prevention and Control of Urban Sewage Treatment Plants (Trial)”, and with reference to the experience and lessons of developed countries for nearly 30 years, sludge treatment and disposal should comply with “safety, environmental protection, recycling, energy conservation and consumption reduction”. The principles of adapting to local conditions, being sound and reliable, and being economically viable.
 
Among them, safety and environmental protection emphasizes that secondary pollution should be controlled to ensure public health and environmental safety; recycling and energy conservation reflect the basic concept of resource conservation and sustainable development; only local conditions, stable and reliable, and economically feasible treatment and disposal technologies The route is practical in practice.
 
Analysis on the development trend of sewage treatment and disposal industry in China
Under the premise of following the rules of industry development, the industry will develop in a healthier direction. The "13th Five-Year Plan" environmental protection plan was promulgated, and the goal of still taking the prevention of atmospheric and water pollution as the goal of the 13th Five-Year Plan will be to pay more attention to building a resource-saving society and improving the overall quality of the ecological environment. The treatment of sludge is also a main direction of domestic environmental protection. Driven by favorable policies and high growth factors, the sludge treatment industry is expected to break through the bottleneck and enter the fast lane. There are five major trends in the future industry:
1.Sewage treatment operations increase the supply of raw materials;
2.The charging channel is more perfect;
3.The right to charge is determined;
4.More stringent regulation;
5.Sludge should be developed towards resources.

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