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According to the requirements of Notice on printing and distributing the development and revision plan of national engineering construction standards in 2016 (JIANBIAOHAN [2015] No. 274) issued by the Ministry of Housing and Urban-Rural Development, this code is revised on the basis of GB 50483-2009 Code for design of environmental protection of chemical industry projects (hereinafter referred to as the former standard) by China Petroleum & Chemical Engineering Survey and Design Association, China Tianchen Engineering Corporation jointly with the organizations concerned.
During the revision of this code, the drafting group based on widely soliciting opinions through conducting extensive investigation, summarizing practical experience accumulated in guiding the design of environmental protection of chemical industry since the implementation of the former standard, referring to current general requirements of the State on environmental protection and a series of environmental protection regulations and policies issued by the State Council, combining with the advanced chemical environmental protection technologies at home and abroad, and widely soliciting for opinions.
This standard consists of 10 clauses, with the main technical contents covering general provisions, terms, design content, factory site selection and general layout, prevention and control of waste gas pollutants, prevention and control of wastewater pollutants, disposal of solid waste, prevention and control of noise, environmental monitoring and environmental protection management.
The main technical contents revised in this code are as follows:
1. The inapplicable clauses are deleted, and the provisions adapting to the current environmental protection regulations, policies and standards are added.
2. In Clause 1, relevant provisions reflecting "three-simultaneity" of environmental protection design are added; in Clause 2, some terms are deleted, revised and added; in Clause 3, the clauses are adjusted and revised to meet the new requirements of the current environmental impact assessment method; in Clause 4, the provisions on sewage outfall arrangement, general layout, greening planning and design are revised, and relevant provisions are added to emphasize strict control of water environmental risks.
3. Clause 5 is comprehensively revised, wherein, the provisions on sampling hole design, safety design, VOCs prevention and control, fugitive emission prevention and control, etc. are added.
4. Clause 6 is comprehensively revised, wherein, various clauses and the subclause "Prevention and control of groundwater and soil pollution” are added, and provisions on reused water treatment, three-level prevention and control of water pollution, prevention and control of groundwater and soil pollution, standardized design of discharge outlets, etc. are added.
5. In Clause 7, the requirements on the treatment (disposal) of hazardous wastes generated during wastewater reuse are added; in Clause 8, the noise limits are revised, and two new subclauses and three new items are added to specify the general layout and vertical layout of chemical industry projects on the prevention and control of noise.
6. Clause 9 is comprehensively revised, wherein, relevant provisions are added to specify the automatic monitoring, sampling, monitoring points, volatile organic compounds leakage detection, etc.; in Clause 10, relevant subclauses are added to promote the improvement of information-based environmental protection management level from the perspective of engineering design standards.
The Ministry of Housing and Urban-Rural Development of the People’s Republic of China is in charge of the administration of this code; the Branch of Chemical Engineering, China Association for Engineering Construction Standardization is responsible for the routine management; China Tianchen Engineering Corporation is responsible for the explanation of specific technical contents. In case of any opinion or suggestion in the process of implementing this code, please send it to China Tianchen Engineering Corporation (Address: No.1, Jingjin Road, Beichen District, Tianjin; 300400) for reference in future revision.
Code for engineering design of environmental protection of chemical industry projects
1 General provisions
1.0.1 This code is formulated with a view to unifying the environmental protection design of chemical industry projects, preventing environmental pollution, rationally developing and utilizing resources and saving energy, so as to realize clean production.
1.0.2 This code is applicable to the environmental protection design of constructed, renovated and extended chemical industry projects.
1.0.3 The environmental protection facilities of chemical industry projects shall be designed simultaneously with the main works, and shall meet the requirements of environmental impact assessment and its approval documents.
1.0.4 The environmental protection design of chemical industry projects shall not only meet the requirements of this code, but also meet those of current national standards.
2 Terms
2.0.1 pollutant
substance produced by human production and life that has destructive effects on the environment; in the chemical industry, it refers to the substance discharged in the production process of chemical industry, which will change the normal composition and nature of the environment and directly or indirectly damage organisms and humans
2.0.2 total amount control
environmental management method system with the core of controlling the total amount of pollutants discharged by pollutant discharging units within a certain period of time and within a certain area
2.0.3 fugitive emission
exhaust emission that do not pass through the exhaust duct, and that with the height of exhaust duct less than 15m
2.0.4 secondary pollution
secondary hazard to the environment which is caused by new pollutants formed by pollutants under physical, chemical or biological action during storage, transportation or treatment
2.0.5 acid mist
mist acidic substance with particle size between 0.1~10μm in the air
2.0.6 nitrogen sealing
measure of filling nitrogen into the storage tank to keep the internal pressure constant, prevent the internal materials from being oxidized, reduce the material volatilization and ensure the tank safety
2.0.7 soft sealing
valve sealing mode of normal temperature, medium- and low- pressure pipelines and containers, in which the valve element and valve body are inlaid with elastomer materials for regulation, interception and leakage prevention
2.0.8 initial polluted rainwater
rainwater produced at the beginning of rainfall in a polluted area, which should be taken as the rainwater in 15~30min at the beginning of a rainfall, or that of 20~30mm in thickness at the beginning of a rainfall
2.0.9 impact load
pollution load caused by sudden increase of wastewater discharge or pollutant concentration
2.0.10 radioactivity
measurement unit of radioactive substances, describing the number of nuclear decays of radioactive elements or isotopes per unit time, and indicating the decay degree of radioactive sources
2.0.11 reused water
wastewater reaching a certain water quality index and meeting the reuse requirements after being subjected to advanced treatment
2.0.12 accident wastewater
wastewater discharged in case of an accident in production devices, including fire-fighting wastewater, leaked materials, rainwater during accidents, etc.
2.0.13 volatile organic compounds (VOCs)
organic compounds involved in photochemical reaction in atmosphere or those determined via measurement or calculation according to specified method, VOCs for short
1 VOCs used for calculation or filing refer to organic compounds with a vapor pressure not less than 10Pa at 20℃, or with a boiling point not higher than 260℃ at 101.325kPa standard atmospheric pressure, or organic compounds (except methane) with the above corresponding volatility under actual production conditions.
2 Non-methane hydrocarbon (NMHC) is taken as the comprehensive control index for the emission of volatile organic compounds in exhaust pipe, factory-boundary and factory-area, and for the calculation of the removal efficiency of volatile organic compounds in organic waste gas recovery or treatment facilities.
2.0.14 flexible connection
connection with elastic material used between the opposite connectors, which not only restrains or transmits power, but also has a certain relative displacement to avoid rigid vibration
2.0.15 odor pollutants
all gaseous substances that irritate olfactory organs and cause people's unhappiness and damage the living environment
2.0.16 hazardous waste
waste discharged during the chemistry industry production, listed in the National catalogue of hazardous wastes or that with hazardous characteristics as determined according to the hazardous waste identification criteria and identification method specified by the nation
3 Design content
3.0.1 The environmental protection design in the project proposal shall include the following contents:
1 environmental status of the project area;
2 discharge of main pollutants as well as prevention and control measures;
3 potential environmental impact;
4 existing problems and suggestions.
3.0.2 The environmental protection design in the feasibility study report shall include the following contents:
1 environmental status of the project area;
2 environmental protection standards adopted in the design;
3 main pollution sources and pollutants of construction projects;
4 preliminary technical scheme for controlling pollution and ecological impact;
5 preliminary analysis of environmental and ecological impacts;
6 environmental protection investment estimation;
7 existing problems and suggestions.
3.0.3 The environmental protection design in the project application report shall include the following contents:
1 environmental status of the project area;
2 environmental carrying capacity of the project area;
3 national and local environmental protection regulations, policies and environmental protection standards;
4 main pollution sources and pollutants of construction projects;
5 environmental control measures and expected effects;
6 impact of the project construction on environment and ecology as well as protection measures;
7 environmental protection investment estimation;
8 description and suggestions on preparation of environmental impact assessment report (table) of the project.
3.0.4 The clause (special clause) on environmental protection in engineering design shall include the following contents:
1 preparation basis;
2 environmental protection regulations and standards designed and implemented;
3 work overview;
4 main pollution sources and pollutants, specifying such characteristic parameters as type, composition, quantity, temperature and pressure as well as emission rules, methods and destination of pollutants;
5 comprehensive utilization and treatment measures as well as expected results;
6 greening scheme;
7 total amount control of pollutants;
8 environmental protection management institutions and personnel quota;
9 environmental monitoring institutions, facilities and personnel quota;
10 environmental protection investment budget;
11 implementation of contents required in environmental impact assessment and its approval documents;
12 existing problems and suggestions.
4 Factory site selection and general layout
4.0.1 The site selection of chemical industry projects shall conform to the local and regional development planning, environmental protection planning and industry orientation, the site shall be located in the planned chemical industry park, and meet the requirements of the environmental impact assessment on park planning and its approval documents.
4.0.2 The factory site selection shall be based on the natural environment and social environment, the conclusion of environmental impact assessment on industrial park planning as well as the nature, scale, pollution discharge characteristics and regional environmental carrying capacity of the proposed project; as demonstrated by analysis, the site scheme with the least environmental impact shall be preferred.
4.0.3 All chemical industry projects that discharge wastewater, waste gas, solid waste, odor pollutants and radioactive substances shall not be constructed in the following areas:
1 residential areas, cultural and educational areas determined by urban planning;
2 drinking water source protection areas;
3 scenic spots and historical sites, tourism spots, hot springs and convalescent areas;
4 nature reserves and ecological red line areas;
5 other areas requiring special protection.
4.0.4 The chemical industry projects with water environmental pollution risk should not be located within 1,000m from the coastline of major rivers and their main tributaries.
4.0.5 The chemical industry projects that discharge toxic and harmful waste gas should be arranged on the windward side of the annual minimum frequency wind direction of environmental protection targets such as local towns or residential areas.
4.0.6 The hazardous waste disposal site shall comply with the current standards GB 18598 Standard for pollution control on the security landfill site for hazardous wastes and HG/T 20504 Code for design of chemical hazardous wastes landfill.
4.0.7 The land for environmental protection engineering facilities shall be selected and arranged simultaneously with that for main work.
4.0.8 The flare facilities, toxic and harmful material storage depots, tank farm, loading and unloading station, sewage treatment plant, temporary hazardous waste storage area, waste landfill and incineration device should be arranged on the windward side of the minimum frequency wind direction throughout the year.
4.0.9 New chemical industry projects should be subjected to greening planning and design, and environmental protection requirements such as dust suppression and noise reduction should be considered in greening scheme.
4.0.10 The storage room of radioactive materials shall be arranged in the area with rare personnel activities.
4.0.11 The high noise sources should not be arranged near the factory-boundary of sensitive targets in acoustic environment.
Foreword i
1 General provisions
2 Terms
3 Design content
4 Factory site selection and general layout
5 Prevention and control of waste gas pollutants
5.1 General requirements
5.2 Control of pollutant source
5.3 Waste gas treatment
6 Prevention and control of wastewater pollutants
6.1 General requirements
6.2 Control of pollution source
6.3 Storage and transportation of wastewater and reused water
6.4 Treatment of wastewater and reused water
6.5 Design of sewage and reused water treatment plant (station)
6.6 Water pollution prevention and control under accident conditions
6.7 Prevention and control of groundwater and soil pollution
7 Disposal of solid waste
7.1 General requirements
7.2 Control of pollution source
7.3 Storage and transportation of solid waste
7.4 Solid waste treatment and disposal
8 Prevention and control of noise
8.1 General requirements
8.2 Noise control of machinery and equipment
8.3 Noise control of factory-area
8.4 Noise control of factory-boundary
8.5 Noise monitoring
9 Environmental monitoring
10 Environmental protection management
Explanation of wording in this code
List of quoted standards
