Opportunities for The Sewage Industry
The Solid Waste Environmental Protection Agency and the Chemicals Management Technology Center stated at the seminar on sewage sludge treatment processes for environmental risk control issues, first to identify the problems of production and sewage sludge; secondly, to strengthen source control and process supervision, Focus on hot issues, and finally put forward the direction of future reforms.
How to Identify Sewage as Hazardous Waste?
Semi-solid or solid matter produced during sewage treatment. As far as environmental concerns are concerned, sewage collects almost all pollutants from sewage. According to its source is industrial sewage. According to the management attribute, industrial wastewater is classified into dangerous waste and general industrial waste.
It is necessary to determine whether the new waste is based on the “National Hazardous Waste List” and the “Hazardous Waste Identification Standard” for hazardous waste. The list of countries with hazardous waste is issued by the Environmental Protection Association with the National Development and Reform Commission and the Ministry of Public Security. Beyond the list of countries with hazardous waste, the need for sludge to be suspected of containing toxic and hazardous substances is determined
The identification points are based on the raw materials and reaction process during the production process to determine which contains toxic and hazardous substances, and with the “Hazardous Waste Identification Standards” listed in the control of toxic and hazardous substances, choose to intersect as part of the toxic and hazardous substances, quantity or exceed The identification of the standard value for more content shall be hazardous waste.
How to Control the Pollution of Environmental Risks?
When it comes to the process of environmental pollution control of sewage sludge treatment, we must first follow the principles of source control and process control. Process supervision is based on technology policies, standards, and specifications. The so-called technology policy is to specify a specific technical route.
Secondly, we have to pay attention to the problem of sewage sludge resource products. As long as toxic and hazardous substances are used, the standard used to control products is limited control of toxic and hazardous substances. This is to make the special performance requirements of waste products, according to the national standard “sewage treatment plant sludge disposal” to implement.
The state encourages the use of resources. There is two path control: first, the high-temperature melting of vitrification, the purpose is to control the release of toxic and harmful substances into the environment; the second is landfill. For the sludge of urban sewage treatment plants, according to the standard of “sludge disposal sludge for urban sewage treatment plant”; sewage sludge hazardous waste, in accordance with the requirements of “Hazardous Waste Landfill Pollution Control Standards”, landfill.
How to Look at the Development Opportunities of the Urban Sewage Sludge Industry?
For the future of urban sewage sludge roads, in accordance with the clear provisions of “Water pollution prevention action plan”; “the urban sewage treatment fee should be no less than the cost of sewage treatment and sludge treatment and disposal.” That is to say, in the collection of sewage treatment fees, The sludge treatment fee will be explicitly included in the scope of the collection, and the “Water pollution prevention action plan” will fall to the point, but it also establishes a cost mechanism for the development of the market-oriented industry.
Secondly, compared to industrial sewage sludge, urban sludge utilization, and disposal technology policies, standards and more sounds, but also laid the foundation for industrial development.
How to Promote the Reform of Hazardous Waste Regulation?
- Strengthen the main responsibility of the enterprise and promote the extension of the producer responsibility system;
- Promote the development of hazardous waste, improve the identification of hazardous wastes, and improve the management system for hazardous wastes;
- Improve technical policies and standards;
- To find out the bottom and guide the management of large enterprises;
- We will promote the construction of incineration and landfill facilities, and the disposal capacity for long-term construction land security;
- Promote the specialization and scale of classification, and use the disposal to classify, classify, store and pre-process the development of the service industry.
Therefore, future work should focus on the three major objectives of performance, economy, and environment. On the basis of further improving existing products and improving quality, we should strengthen mechanism research and compound research, reduce costs and reduce pollution; speed up water treatment chemicals with resource advantages. Research and application of chemicals.
In the synthesis of new products, we must break through the existing ideas, actively use green chemical technology, first green the target molecules, adopt clean process, synthesize polycarboxylic acid scale inhibitors, aqueous dispersants, organic phosphonate, and easy to be biological Degradable, truly environmentally friendly, highly effective corrosion and scale inhibitor to completely replace phosphorus-containing formulations.