In order to deeply implement the "CPC Central Committee Opinions of the State Council on Comprehensively Promoting the Construction of a Beautiful China", "Opinions of the Central Committee of the Communist Party of China The State Council on the depth of pollution prevention and control of the war of opinions" and other documents, according to the Ministry of Ecology and Environment issued "on the production enterprises and chemical parks to carry out soil and groundwater pollution control and remediation of the pilot work of the notice" (Environmental Office Soil letter 〔2023〕 No. 342) requirements of the work, combined with the actual Nantong Economic and Technological Development Zone Chemical Park, the development of this work program.
One, the overall requirements
(a) Construction goals
Centered around the pilot "gradually promote the Park The main task of the pilot project is to "gradually promote the solution of outstanding groundwater environmental problems in the park, explore the establishment of a risk control and remediation technology system in the chemical park, and study the formation of a regulatory model for the prevention and control of soil and groundwater pollution in the chemical park". On the basis of the existing prevention and control of groundwater pollution in the park, it will carry out the investigation of the environmental conditions of the groundwater, risk assessment, health analysis and other work, so as to get to the bottom of the situation, find out the groundwater pollution problems and carry out traceability analysis. Carry out traceability analysis; improve the prevention and control system of soil and groundwater pollution in the production enterprises; explore the establishment of chemical park risk control and remediation system, to protect the health of the population in the enterprise and the park and the sensitive receptor environmental safety of the bottom line target, and gradually realize the chemical park groundwater pollution does not go out of bounds, does not aggravate, and does not spread the goal.
(2) Working Principles
Adhere to the problem-oriented, the implementation of precise policy. Based on the Nantong Economic and Technological Development Zone Chemical Park industrial layout, enterprise characteristics, hydrogeological conditions, groundwater environmental quality and other practical, for the park ecological location of sensitive, long history of production, the potential for pollution risks and other issues, to carry out a detailed investigation of groundwater, to find the key to groundwater pollution prevention and control and the weak links, a clear goal, make plans, refine the task, improve the measures, and to promote the precise management of groundwater pollution The company has been working on this project for a long time, and has been able to improve the quality of the groundwater pollution.
Adhere to the combination of prevention and treatment, and explore innovative systems. Based on the characteristics of the park's northern area vacating and southern area gathering development coexisting, new and old enterprises coexisting, taking into account the source prevention and control of the production enterprises and the pollution area control and repair, exploring diversified groundwater pollution control and repair technology system; through the system innovation, technological innovation, model innovation, exploring the formation of the "investigation-traceability-risk assessment-control and repair-effective assessment" whole process risk control and repair. Through institutional innovation, technological innovation and model innovation, explore the formation of "investigation - traceability - risk assessment - control and remediation - effect assessment" of the whole process of risk control technology system, and promote the formation of the park's groundwater pollution prevention and control and repair of long-term mechanism.
Adhere to system integration, focusing on synergistic linkage. Around the chemical park groundwater pollution control and restoration of the overall objective, the comprehensive use of enterprise hidden trouble investigation, broken source rectification, source attenuation, prevention and control of blocking and groundwater pollution control and restoration of engineering means, the establishment of a sound groundwater monitoring system in the park and monitoring and early-warning platform to strengthen the potential for groundwater pollution and existing groundwater pollution prevention and control synergistically and continue to enhance the quality of the groundwater environment.
II. Main Measures
(1) Carry out the construction of zoning and grading system for the prevention and control of groundwater pollution in the park
1. Management system. Based on the current status of soil and groundwater environment in the chemical park, distribution of enterprises in the park, years of production, hydrogeological conditions (permeability of the air pocket, groundwater level, groundwater recharge and discharge conditions, etc.), historical environmental accidents, distribution of sensitive targets in the vicinity and other basic factors, combined with the current status of the park's industries and the transformation and upgrading needs for the differences between the southern and northern zones, carry out a comprehensive assignment of the regional zoning and categorize the different zones in the park into The different zones in the park are divided into control and management zones, key prevention and control zones, traceability and investigation zones, ecological prevention and control zones and low-risk zones. According to the zoning situation, targeted development of detailed requirements, clear "a district a policy".
2. Carry out enterprise hierarchical control. According to the pollution factors and their types (heavy metals, volatile semi-volatile organic compounds, persistent organic compounds, etc.), pollution media (soil, groundwater and soil-groundwater composite, etc.), etc., taking into full account the characteristics of different pollutants in different pollution media distribution and migration, to determine the risk of groundwater pollutant contamination in each area of the park graded, the area of the enterprise is divided into the health of the level of prevention and control, migration prevention and control level, the level of protection and monitoring The enterprises in the zone are categorized into health prevention and control level, migration prevention and control level, protection and monitoring level, investigation and identification level and low risk level. For health prevention and control level, relocation prevention and control and protection and monitoring level of enterprise plots clear control requirements, for the investigation and identification level of enterprise plots clear investigation period requirements.
(2) Constructing a whole-process supervision, prevention and control and green and safe reuse model for the exiting sites
3. Scientific planning of the relocation and vacating strategy of the North District. Reasonable and scientific preparation of the North Zone relocation and vacating planning, the development of enterprise relocation schedule, according to the plan of the Development Zone Chemical Park, the North Zone chemical enterprises gradually relocated, exit, comprehensive optimization of spatial layout, reduce the North Zone of the Yangtze River Honggang drinking water source protection zone and the old Honggang Wetland Park of groundwater contamination potential.
4. Implementation of the requirements for the prevention and control of soil and groundwater pollution in the phase of closure and withdrawal. Before the closure and withdrawal of the northern part of the chemical park, according to the preliminary investigation, detailed investigation results, enterprise self-monitoring, the distribution of surrounding sensitive targets, etc., the development of the park level "northern part of the closure and withdrawal phase of soil and groundwater pollution prevention and control program", based on the scope of groundwater contamination in the northern part of the contamination, pollution trends, combined with the enterprises in the groundwater pools and other pollution hazards Based on the scope of groundwater pollution in the North Zone, the pollution trend, combined with the potential pollution risks of enterprises such as groundwater ponds, determine the key enterprises and key areas of concern, and guide the regional enterprises to carry out relocation and dismantling and soil investigation.
5. Carrying out research on the long-term prevention and control of groundwater pollution in the exiting sites and assessing their reuse. After the closure and withdrawal of the North Zone, coordinate the existing results, accurately identify the groundwater environmental problems in the North Zone of the Chemical Industry Park after the closure and withdrawal, and clarify the current status of the groundwater environment and the trend of change after the withdrawal of the North Zone. Considering human health risks, ecological risks, environmental quality, engineering safety, sensory acceptability and implementation of later management measures, the study report on the green development and safe utilization of the North Zone is formulated to make reasonable recommendations on the land use of the North Zone, provide scientific guidance for the formulation of development and utilization planning for the subsequent parcels, and promote the resourcefulness, greening and safe utilization of the land in the North Zone.
(3) Explore the establishment of a full-process risk control and remediation technology system for chemical parks, including "investigation - traceability - risk assessment - risk control and remediation - effect assessment - post-management"
(4) Explore the establishment of a full-process risk control and remediation technology system for chemical parks. align: left;">6. Implement source prevention and control. First, to carry out the park's public areas of sewage pipelines, chemical raw materials pipeline corridor overhead laying and upgrading; second is to regularly carry out pipeline leakage inspection, through the visual detection method, pressure detection method, ultrasonic detection method, environmental investigation method, and other means of regular leakage detection of the main sewage pipelines, chemical raw materials pipeline corridors, and in a timely manner, according to the problems found in a good rectification.
7. Carry out groundwater pollution traceability, source control. According to the results of the investigation and assessment of the environmental conditions of groundwater, analyze the contribution of various types of pollutants in groundwater pollution sources, traceability of characteristic pollutants. For the determination of pollutant sources of key concerns of enterprises, in-depth investigation of hidden problems, through the investigation and reform, upgrading and reform, system control and other ways to cut off the pollution pathway in a timely manner, to carry out dynamic monitoring, reduce groundwater pollution input.
8. Carry out control and repair. In the enterprise production does not cause a greater impact, does not cause safety hazards under the premise of combining the park south and north of the future industrial planning different, sensitive target receptors different characteristics, subregional classification, targeted groundwater pumping, in situ remediation, natural attenuation, permeable reaction wall and other control and remediation engineering measures, and continue to carry out remediation effect assessment.
(4) Innovative pollution prevention and management system for enterprises in production
9. Strengthen the management of key regulatory units. Dynamically establish a list of key sewage disposal units for groundwater pollution prevention and control, supervise and guide the key soil pollution supervision units to carry out hidden danger investigation, self-monitoring, peripheral monitoring, etc., and the key sewage disposal units for groundwater pollution prevention and control to carry out groundwater pollution source seepage investigation and renovation, etc., and for the problems found by the investigation or monitoring, formulate and implement remedial measures in time to carry out the "look back" work on a regular basis. "Work.
10. Carry out a pilot study on the control of enterprises in production while production. Combined with the results of the detailed investigation of the park, select the production scale, production category, typical and representative enterprises, carry out soil pollution deep hidden danger investigation, soil and groundwater dynamic monitoring work, according to the results of the investigation and monitoring, carry out pilot studies on the control of production while production, to reduce and save the subsequent withdrawal of the land control and repair processes and costs.
11. Promote the construction of "no-waste park" and deepen the prevention and control of pollutants at source. Strengthen the "source control" to curb the source of solid waste increment; strengthen the "process reduction" to carry out energy saving, carbon reduction, recycling transformation; highlight the "terminal consumption" to expand solid waste utilization channels; Improve the "system construction", integrated and innovative scientific and technological governance system, create a green market system, explore the establishment of a coordinated regulatory system, and vigorously enhance the solid waste reduction, resource utilization, harmlessness level.
(E) Improve the monitoring and regulatory system for soil and groundwater pollution prevention in the park
12. Construct a three-dimensional - refined monitoring and early warning system. For the Chemical Industry Park South to develop the risk of groundwater pollution monitoring monitoring early warning system construction program, give full consideration to the type of pollution, pollution path, sensitive targets and other factors, online monitoring and manual monitoring complement each other, water quality monitoring and water level observation for the principle of co-ordination of consideration, in the groundwater monitoring at the same time, systematically carry out the park and enterprise underground pipeline corridors, storage tank leakage detection and inspection and soil gas monitoring, to construct a "Multi-scenario, all-round, three-dimensional" groundwater pollution risk monitoring and early warning system.
13. Build a groundwater monitoring and early warning platform. Data integration, build a chemical park groundwater monitoring and early warning platform, simulation of environmental quality trends, migration simulation, risk assessment, classification of risk levels, early warning classification, to achieve "monitoring - analysis - traceability - simulation prediction - early warning - decision-making" function.
14. Explore the division of responsibility for pollution in the park and identify working mechanisms. Combined with the type and number of enterprises in the park, and the uncertainty of the flow of groundwater in the chemical park along the river, explore the establishment of a method of analyzing the percentage of pollution contribution applicable to the delineation of pollution responsibility in the chemical park and the control and repair of pollution, and the management of succession of the responsible person, etc., to clarify the responsibility of soil and groundwater pollution between the departments, the park and the enterprise, and the enterprise and the enterprise and the responsibility for the responsibility of the various parties.
Three, implementation plan
By the end of June 2024, the pilot work plan will be clarified, and the pollutant source investigation, detailed investigation, simulation and prediction and risk assessment will be completed, and the risk management and control technology program will be compiled; and the chemical park will be carried out. South groundwater pollution risk monitoring and surveillance, early warning system construction;
By the end of 2024, complete the park groundwater pollution prevention and control of zoning classification and grading demarcation; carry out the key polluted areas of water quality and source of pollution source strength response analysis, source of pollution source disconnection work; start the implementation of targeted risk management and control and remediation activities;
By the end of 2025, implement the whole process of prevention and control of the risk of groundwater pollution in the northern part of the Chemical Industry Park relocation and vacating; complete the construction of the monitoring and early warning system for the risk of groundwater pollution in the southern part of the Chemical Industry Park, and build a platform for monitoring and early warning of the groundwater environment in the Park; complete the analysis of the source strength of the source of contamination and source breakage; carry out a phased assessment of the effects of risk control and remediation;
by the end of 2027, complete the assessment of the effect of groundwater pollution control and remediation in the chemical park; summarize the results of the work in all aspects and the existence of problems. The evaluation of the effectiveness of groundwater pollution control and remediation in chemical parks will be completed by the end of 2027; summarize the results of various aspects of the work and the existing problems, and form the next step of the work plan and the case of "development zone practice".
Four, safeguard measures
(a) Strengthen the organization and leadership. Attaches great importance to the pilot work of groundwater pollution control and remediation in chemical parks, further unify the thinking and integrate the strength. Relevant departments, Zhongxing Street, the old Honggang to establish collaboration, information sharing, meeting the work mechanism, systematic planning for the next step, regularly carry out the stage of work summary.
(ii) the implementation of financial support. Around the work plan, advance planning layout, apply for financial construction funding support, planning pilot work projects. Actively declare the central pollution prevention and control special funds and Jiangsu Province pollution prevention and control funds into the bank. Play the role of government investment funds to guide and leverage, guide the park enterprises to take the initiative to share some of the funds or take the initiative to carry out some of the pilot construction work, to ensure the successful completion of the pilot task.
(c) Strengthen technical support. Make full use of the technical strength of all parties, invite the participation of technical units, the formation of expert teams, and actively create a technical cooperation system of information interoperability, technology sharing, resource sharing, in-situ, low-disturbance, low-cost technology applications as the guide to explore the greening and low-carbonization of groundwater pollution control technology pilot, pilot and application, and the formation of scientific and technological innovation and application of cases.
(4) Strengthen publicity and guidance. Organize and carry out training on soil and groundwater pollution prevention and control, strengthen the idea of soil and groundwater pollution prevention and control, and enhance the awareness of enterprises and the public. Strengthen the guidance of public opinion, strengthen all sectors of society on the prevention and control of soil and groundwater pollution concerns and supervision, to create a social atmosphere of protection of soil and groundwater, the formation of economic development and ecological environmental protection to promote each other, mutually beneficial and good cycle.
