Recently, in order to implement the requirements of the Party Central Committee and the State Council’s decision and deployment and the "Government Work Report", speed up the shortcomings of urban domestic sewage treatment, and promote the construction of new urbanization, the National Development and Reform Commission and the Ministry of Housing and Urban-Rural Development have studied and formulated the "Urban Implementation Plan for Strengthening and Weaknesses of Domestic Sewage Treatment Facilities (hereinafter referred to as the "Plan").
The "Plan" clearly pointed out that it is necessary to accelerate the harmless disposal and resource utilization of sludge. On the basis of reduction treatment such as sludge thickening, conditioning and dewatering, according to the amount and quality of sludge, combined with local economic and social The development level, select the appropriate treatment technology route.
At the 6th Sludge Technical and Equipment Seminar hosted by the Water Pollution Prevention and Control Equipment Professional Committee of China Environmental Protection Machinery Industry Association on September 11-13, Zhao Penggao, deputy director of the Department of Environmental Resources and Resources of the National Development and Reform Commission, focused on the "Plan" and made further progress Interpretation.
Zhao Penggao pointed out that sludge treatment and disposal facilities should be included in the construction plan of sewage treatment facilities in the region, and cities at the county level and above should comprehensively promote facility capacity building. County towns and organized towns can make overall plans to consider centralized treatment, and restrict the sludge that has not been dehydrated up to the standard from being buried in landfills. Cities at prefecture-level and above in the eastern region, large and medium-sized cities in the central and western regions, accelerate the reduction of the scale of sludge landfills, and encourage the use of biomass utilization + incineration treatment models in large and medium-sized cities with scarce land resources to burn waste to power plants and combustion plants. Co-processing methods such as coal power plants and cement kilns are used as a supplement to sludge treatment.
In addition, Zhao Penggao also emphasized to promote the use of domestic sludge incineration ash as raw materials for building materials, encourage the use of anaerobic digestion, aerobic fermentation and other methods to treat sludge. After harmless treatment meets relevant standards, it can be used for soil improvement and wasteland afforestation. , Seedling landscaping and agricultural utilization.
"Where there is water treatment, sludge is produced. Sludge not only comes from domestic sewage treatment plants, but also industrial wastewater treatment plants. Moreover, with the economic development and the improvement of urbanization, the amount of sewage generated is increasing. The sludge is also increasing.” Zhao Penggao said, promoting the harmless, resource-based treatment and disposal of sludge is a difficulty for urban sewage treatment facilities to make up for the shortcomings. The harmlessness and resource utilization of sludge must be supported by technology and equipment. However, my country's sludge treatment technology and equipment are still weak and should be the biggest shortcoming restricting the development of the industry. The industry needs to work together to promote related work. The holding of the 6th Sludge Technology and Equipment Seminar is very important and very timely. I hope China Environmental Protection Machinery Industry Association, as the "mother family" of environmental protection equipment companies, will continue to play the role of the association as a bridge and link, and make great contributions to the beautiful China of China's environmental protection industry. .
