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Original title: Analysis of the impact of China's sludge treatment and disposal industry in the next 5 years
I. Favorable factors
(1) Favorable policies
In order to solve the sludge treatment problem, the "Ten Water Measures" proposed to provide a considerable tilt to the sludge treatment field. The 13th Five-Year Plan for Environmental Protection also proposed to vigorously promote the stabilization, harmlessness and resource utilization of sludge treatment and disposal, with the harmless treatment and disposal rate of sludge in cities at prefecture level and above reaching 90%, and 95% in the Beijing-Tianjin-Hebei region.
The strengthening of national policies and regulations has undoubtedly greatly driven the process of resource utilization and harmlessness of sludge treatment and disposal, and related treatment technologies and equipment have also developed rapidly. The phenomenon of "emphasizing water and neglecting sludge" in major sewage plants has also been alleviated to a certain extent.
(2) PPP model
The sludge treatment and disposal market has a large space and requires a large amount of capital investment. With government debt constraints, the government-led financing model is no longer applicable. The development of the PPP model has allowed a large amount of social capital to enter the sludge treatment and disposal industry, which will promote the development of the industry.
The PPP model has already existed in sludge treatment projects in China. In the next few years, sludge treatment projects using this model will have a larger market. The PPP model accelerates government-enterprise cooperation in sludge treatment, provides companies with an extremely broad channel, and is also one of the government's strategies for handling sludge treatment and environmental protection issues. In this transformation of sludge treatment methods, well-funded sludge treatment equipment suppliers and sludge treatment technology support companies will have a greater advantage.
(3) Improving the charging mechanism
Currently, the sludge treatment fee is 250 yuan per ton, and this standard has been implemented for many years. However, with the increase in prices and labor costs, this standard is a bit low. Moreover, environmental protection requirements are increasingly stringent, and companies have to add various environmental protection facilities such as negative pressure deodorization, and the operating costs are also a considerable investment.
In recent years, the Ministry of Housing and Urban-Rural Development, together with the Ministry of Finance and the National Development and Reform Commission, have jointly formulated administrative measures for sewage treatment fees and related price management measures, both clearly incorporating sludge treatment costs into sewage treatment fee costs. Moreover, part of the sewage treatment fees collected must be used for the construction and operation of sludge treatment and disposal, and it is also proposed that the government must provide financial support. If operating costs cannot be met, the government should provide appropriate subsidies. It is expected that during the "13th Five-Year Plan" period, the sludge market will receive more policy and financial support from the government.
(4) Development of sludge resource utilization
Treated sludge is a good organic fertilizer. According to scientific estimates, sewage contains a large amount of nitrogen and phosphorus elements. About 20%-30% of the nitrogen is transferred into the sludge, and about 90% of the phosphorus. The sludge produced by some sewage plants has even higher nitrogen, phosphorus, and potassium content than farmyard manure. From a resource perspective, phosphate rock is currently one of the world's scarce resources. The global phosphate rock reserves can only be developed for about 100 years. Since the 1990s, Europe has continuously emphasized the importance of phosphorus resources. Therefore, fully tapping the intrinsic value of sludge, the potential economic and social benefits are promising.
II. Unfavorable factors
(1) Low industry development level
Due to the late start of sludge disposal in China, although it has undergone a period of development, it is still backward compared with developed countries. The most important core treatment technologies are lacking, domestic basic conditions are not considered, and even foreign technologies are mechanically applied. Moreover, many treatment equipment is outdated and backward, and the effects and efficiency are very poor, greatly hindering the progress of sludge treatment in China.
Data shows that the current sludge treatment methods in China mainly include landfill, composting, natural drying, and incineration, with these four treatment methods accounting for 65%, 15%, 6%, and 3% respectively. It can be seen that landfill is still the main sludge treatment method in China. In addition, the disposal capacity of urban sewage treatment enterprises is insufficient and disposal methods are backward, so a large amount of sludge has not received standardized treatment, directly causing "secondary pollution" and posing a serious threat to the ecological environment.
(2) China's sludge treatment rate is low
For a long period in the past, most sewage treatment plants in China paid more attention to sewage but neglected sludge. After sewage treatment, over 80% of the sludge was arbitrarily dumped and discharged, polluting farmland and soil. National statistics show that less than 60% of sludge is harmlessly treated through sanitary landfill, fertilizer production, incineration, building materials, etc., and nearly 50% of sludge fails to achieve harmless treatment.
The huge amount of sludge has put enormous pressure on the ecological environment, once leading to a situation of "sludge besieging the city." Sludge concentrates pollutants from sewage, containing large amounts of nitrogen, phosphorus, and other nutrients, as well as organic matter, viruses, microorganisms, parasite eggs, heavy metals, and other toxic and harmful substances. Without effective treatment and disposal, it will cause serious harm to the environment.
(3) Inadequate regulatory system
Sludge from sewage treatment plants has certain hazards, and improper disposal can cause secondary pollution. Therefore, a regulatory system should be established for sludge disposal from sewage treatment plants, covering all stages including sludge generation, transportation, and harmless disposal, ensuring that the responsible entities in each stage are included in the scope of supervision. However, from the current situation, there is a widespread phenomenon of "emphasizing water over sludge," especially the regulatory system for sludge disposal is not perfect, lacking systematic planning. The overall urban planning lacks sludge disposal content, leading to lagging management of sludge treatment.
(Source: BXH Water Treatment Network)
Original title: Analysis of the impact on China's sludge treatment and disposal industry in the next 5 years
I. Favorable factors
(1) Favorable policies
To solve the sludge treatment problem, the "Water Ten Plan" proposed a considerable tilt towards the sludge treatment field. The 13th Five-Year Plan for Environmental Protection also proposed to vigorously promote the stabilization, harmless treatment, and resource utilization of sludge, with the harmless treatment and disposal rate of sludge in cities at prefecture level and above reaching 90%, and reaching 95% in the Beijing-Tianjin-Hebei region.
The strengthening of national policies and regulations has undoubtedly greatly driven the resource recovery and harmless treatment process of sludge treatment and disposal. Related treatment technologies and equipment have also developed rapidly, and the phenomenon of "emphasizing water over sludge" in major sewage plants has been alleviated to a certain extent.
(2) PPP model
The sludge treatment and disposal market has large space and requires substantial capital investment. With government debt constraints, the government-led financing model is no longer applicable. The development of the PPP model has allowed a large amount of social capital to enter the sludge treatment and disposal industry, which will promote the development of the industry.
The PPP model has already been used in sludge treatment projects in China. In the next few years, sludge treatment projects using this model will have a larger market. The PPP model accelerates the cooperation between government and enterprises in sludge treatment, providing companies with extremely broad channels and is also one of the government's strategies to address environmental issues in sludge treatment. In this transformation of sludge treatment methods, well-funded sludge treatment equipment suppliers and sludge treatment technology supporting companies will have greater advantages.
(3) Improving the charging mechanism
At present, the sludge treatment fee is 250 yuan per ton, and this standard has been implemented for many years. However, with the increase in prices and labor costs, this standard is somewhat low. Moreover, environmental protection requirements are increasingly raised, and enterprises need to add various environmental protection facilities such as negative pressure deodorization, and the operating costs are also a considerable investment.
In recent years, the Ministry of Housing and Urban-Rural Development, together with the Ministry of Finance and the National Development and Reform Commission, have jointly formulated measures for the management of sewage treatment fees and related price management measures, both clearly including sludge treatment costs in the sewage treatment fee costs. Moreover, part of the collected sewage treatment fees must be used for the construction and operation of sludge treatment and disposal. It also proposes that the finance department should provide a bottom line, and if the operating cost cannot be covered, appropriate subsidies should be given. It is estimated that during the "13th Five-Year Plan" period, the sludge market will receive more policy and financial support from the government.
(4) Development of sludge resource utilization
Treated sludge is a good organic fertilizer. According to scientific estimates, sewage contains a large amount of nitrogen and phosphorus, of which about 20%-30% of nitrogen is transferred to sludge, and about 90% of phosphorus. The sludge produced by some sewage plants has higher nitrogen, phosphorus, and potassium content than farmyard manure. From a resource perspective, phosphate rock is currently one of the world's scarce resources. The global phosphate rock reserves can only be developed for about 100 years. Europe has been continuously emphasizing the importance of phosphorus resources since the 1990s. Therefore, fully tapping the intrinsic value of sludge, the potential economic and social benefits it may generate are exciting.
II. Adverse Factors
(1) Low Level of Industry Development
Because China's sludge disposal started relatively late, although it has undergone a period of development, it still lags behind developed countries. The most important core treatment technologies are lacking, without considering the domestic basic situation, and even mechanically copying foreign technologies. Moreover, many treatment equipment are outdated and backward, with poor effects and efficiency, greatly hampering the progress of sludge treatment in China.
Data shows that currently, the main sludge treatment methods in China include landfill, composting, natural drying, and incineration, with these four methods accounting for 65%, 15%, 6%, and 3% respectively. It can be seen that landfill is still the main approach for sludge treatment in China. In addition, due to insufficient disposal capacity and outdated disposal methods of urban sewage treatment enterprises, a large amount of sludge is not standardized and thus directly causes "secondary pollution," posing a serious threat to the ecological environment.
(2) Low Sludge Treatment Rate in China
For a long period in the past, most sewage treatment plants in China valued sewage while despising sludge. After sewage treatment, over 80% of the sludge was arbitrarily dumped and discharged, polluting fertile farmland and soil. National statistics show that less than 60% of sludge was harmlessly treated by means such as sanitary landfill, fertilizer production, incineration, and building materials, while nearly 50% failed to achieve harmless treatment.
The massive amount of sludge has already exerted enormous pressure on the ecological environment, once leading to the situation of "sludge besieging the city." Sludge enriches pollutants from sewage, containing large amounts of nutrients such as nitrogen and phosphorus, as well as organic matter, viruses, microorganisms, parasite eggs, heavy metals, and other toxic and harmful substances. Without effective treatment and disposal, it will cause serious harm to the environment.
(3) Inadequate Regulatory System
Sludge from sewage treatment plants is hazardous to a certain extent, and improper disposal can cause secondary pollution. Therefore, corresponding regulatory systems should be established for all aspects of sludge disposal from the generation, transportation, and harmless disposal of sludge from sewage treatment plants, ensuring that the responsible subjects at every step are included in the supervision scope. However, from the current situation, there is a widespread phenomenon of "valuing water and despising sludge." Especially, the regulatory system for sludge disposal is not sufficiently complete, lacks systematic planning, and the urban master plan lacks sludge disposal content, leading to a lagging management level for sludge treatment.
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