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HJ 2058-2018: Technical specifications for printed circuit board manufacturing wastewater treatment
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Basic data

Standard ID HJ 2058-2018 (HJ2058-2018)
Description (Translated English) Technical specifications for printed circuit board manufacturing wastewater treatment
Sector / Industry Environmental Protection Industry Standard
Classification of Chinese Standard HJ
Word Count Estimation 33,334
Date of Issue 2018-08-13
Date of Implementation 2018-09-01
Regulation (derived from) Ministry of Ecology and Environment Announcement No. 30 of 2018
Issuing agency(ies) Ministry of Ecology and Environment

HJ 2058-2018: Technical specifications for printed circuit board manufacturing wastewater treatment


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Technical specifications for printed circuit board manufacturing wastewater treatment Sh National Environmental Protection Standard of the People's Republic Printed Circuit Board Wastewater Treatment Engineering Technical Specification Technical specifications for printed circuit board manufacturing Wastewater treatment The standard text shall prevail. ) Published on.2018-08-13 2018-09-01 Implementation Ministry of Ecology and Environment released I directory Foreword..I 1 Scope..1 2 Normative references..1 3 Terms and Definitions.4 4 Contaminants and pollution loads.4 5 General requirements..6 6 Process Design..8 7 Main process equipment and materials.19 8 Detection and Process Control 20 9 Major auxiliary projects.21 10 Labor Safety and Occupational Health..23 11 Construction and acceptance 24 12 Operation and maintenance 26 Appendix A (informative) Process and classification of wastewater from printed circuit boards.28 Appendix B (informative appendix) schematic diagram of printed circuit board wastewater treatment engineering process 30 I preface In order to implement the Law of the People's Republic of China on Environmental Protection Law and the Law of the People's Republic of China on the Prevention and Control of Water Pollution, Prevent and control environmental pollution, improve the quality of ecological environment, standardize the construction and operation management of printed circuit board wastewater treatment projects, and formulate This standard. This standard specifies the technical requirements for the design, construction, acceptance, operation and maintenance of printed circuit board wastewater treatment engineering. This standard is a guiding standard. This standard is the first release. This standard was formulated by the Ministry of Ecology and Environment. This standard is mainly drafted by. China Environmental Protection Industry Association, Guangdong Xinda Environmental Technology Co., Ltd., National Printed Circuit Industry Association, Haolan Environmental Protection Co., Ltd. This standard is approved by the Ministry of Ecology and Environment on August 13,.2018. This standard has been implemented since September 1,.2018. This standard is explained by the Ministry of Ecology and Environment.

1 printed circuit board wastewater treatment engineering technical specifications

1 Scope of application

This standard specifies the technical requirements for the design, construction, acceptance, operation and maintenance of printed circuit board wastewater treatment projects. This standard applies to the construction and operation management of printed circuit board wastewater treatment projects, and can be used as a printed circuit board construction project. Technical basis for environmental impact assessment, environmental protection facility design, construction, acceptance and operation management.

2 Normative references

The contents of this standard refer to the terms in the following documents. Valid versions of undated references, including modifications Single) applies to this standard. GB/T 5656 centrifugal pump technical conditions (Class II) GB/T 5657 centrifugal pump technical conditions (Class III) GB 7251 low-voltage switchgear and control equipment GB 12348 Environmental noise emission standards for industrial enterprises GB 14554 Odor Pollutant Discharge Standard GB 15603 General rules for the storage of common dangerous chemicals GB/T 16907 centrifugal pump technical conditions (Class I) GB 18597 Hazardous Waste Storage Pollution Control Standard GB 18598 Hazardous Waste Landfill Pollution Control Standard GB 18599 General industrial solid waste storage and disposal site pollution control standards GB/T 19249 reverse osmosis water treatment equipment GB/T 22580 Special environmental conditions Technical requirements for plateau electrical equipment Low-voltage switchgear and control equipment GB 50009 Building Structure Load Specification GB 50014 Outdoor Drainage Design Code GB 50015 Building Water Supply and Drainage Design Code GB 50016 Building Design Fire Code GB 50019 Industrial building heating ventilation and air conditioning design specification GB 50034 Architectural Lighting Design Standard GB 50046 industrial building anti-corrosion design specification 2GB 50052 Power Distribution System Design Specification GB 50053 20KV and below substation design specifications GB 50054 Low Voltage Distribution Design Specification GB 50057 lightning protection design code for buildings GB 50059 35kV~110kV substation design specification GB/T 50087 industrial enterprise noise control design specification GB 50093 automation instrument engineering construction and quality acceptance specification GB 50136 Electroplating wastewater treatment design code GB 50141 Water supply and drainage structure engineering construction and acceptance specification GB 50168 Electrical installation engineering cable line construction and acceptance specifications GB 50169 Electrical installation engineering grounding device construction and acceptance specifications GB 50189 Public Building Energy Efficiency Design Standard GB 50191 seismic design code for structures GB 50194 Construction site safety requirements for construction and supply of electricity GB 50204 Concrete Structure Engineering Construction Quality Acceptance Specification GB 50212 Construction anti-corrosion engineering construction specification GB 50224 Construction Anti-corrosion Engineering Construction Quality Acceptance Specification General specification for construction and acceptance of GB 50231 mechanical equipment installation engineering GB 50236 Field equipment, industrial pipeline welding engineering construction specifications GB 50243 Ventilation and air conditioning engineering construction quality acceptance specification GB 50254 Electrical installation engineering Low-voltage electrical installation and acceptance specifications GB 50257 Electrical installation engineering explosion and fire hazard environment electrical installation construction and acceptance specifications GB 50268 Water supply and drainage pipeline engineering construction and acceptance specifications GB 50275 Fan, compressor, pump installation engineering construction and acceptance specifications GB 50334 Urban Wastewater Treatment Plant Project Quality Acceptance Specification GB 50726 Industrial equipment and pipeline anti-corrosion engineering construction specifications GB J 22 Factory Mine Road Design Code GB J 141 Code for construction and acceptance of water supply and drainage structures Construction and acceptance specifications for water supply and drainage structures GBZ 1 industrial enterprise design hygiene standard GBZ 2.1 Workplace harmful factors Occupational exposure limits Chemical harmful factors 3GBZ 2.2 Workplace harmful factors occupational exposure limit physical factors HJ/T 212 pollution source online automatic monitoring (monitoring) system data transmission standard HJ/T 242 environmental protection product technical requirements belt press filter for sludge dewatering HJ/T 251 environmental protection product technical requirements Roots blower HJ/T 252 environmental protection product technical requirements, microporous aerator HJ/T 261 environmental protection product technical requirements pressure dissolved air flotation device HJ/T 265 environmental protection product technical requirements scraper HJ/T 266 environmental protection product technical requirements suction machine HJ/T 278 environmental protection product technical requirements single-stage high-speed aeration centrifugal blower HJ/T 279 environmental protection product technical requirements push flow mixer HJ/T 282 environmental protection product technical requirements shallow pool air flotation device HJ/T 283 environmental protection product technical requirements chamber filter press and plate and frame filter press HJ/T 336 Environmental Protection Product Technical Requirements Submersible Sewage Pump HJ/T 353 water pollution source online monitoring system installation technical specification HJ/T 354 Water Pollution Source Online Monitoring System Acceptance Technical Specification (Trial) Technical Specifications for Operation and Assessment of HJ/T 355 Water Pollution Source Online Monitoring System (Trial) HJ 450 Cleaner Production Standard Printed Circuit Board Manufacturing HJ/T 493 Technical Regulations for Preservation and Management of Water Samples HJ/T 494 Water Quality Sampling Technical Guidance HJ/T 495 water quality sampling plan design technical regulations HJ 576 Anaerobic-anoxic-aerobic activated sludge process wastewater treatment engineering technical specification HJ 579 Membrane Separation Wastewater Treatment Engineering Technical Specification HJ .2009 Biological Contact Oxidation Wastewater Treatment Engineering Technical Specification HJ .2010 Membrane Biological Wastewater Treatment Engineering Technical Specification HJ .2014 Biological Filter Method Wastewater Treatment Engineering Technical Specification HJ 2524 Environmental Protection Product Technical Requirements Single Screw Pump “Measures for Completion and Acceptance of Construction Projects (Engineering)” (Project Construction [1990] No. 1215) Measures for the Administration of Environmental Protection Acceptance for Completion of Construction Projects (Order No. 13 of the State Environmental Protection Administration) Interim Measures for Environmental Protection Acceptance of Construction Project Completion (Guohuan Environmental Impact Assessment [2017] No. 4) Technical Requirements for Standardized Remediation of Sewage Discharges (Trial) (Environmental Supervision [1996] No. 470)

4 Convention on the Safe Use of Chemicals at Workplaces

Convention on the Safe Use of Chemicals in the Workplace

3 Terms and definitions

3.1 printed circuit board printed circuit board (PCB) Refers to a printed circuit board that forms a point-to-point interconnect line and printed components on an insulating substrate as intended. It is called a printed board. 3.2 printed circuit board wastewater wastewater of printed circuit board Refers to all kinds of wastewater generated during the production process of printed circuit boards, including washing water, washing water and exhaust gas of each production process. Handle spray water, floor flushing water, and waste water from “run, run, drip, leak”. 3.3 Comprehensive wastewater comprehensive wastewater Refers to the wastewater from the various types of wastewater discharged from the printed circuit board after pretreatment. 3.4 liquid waste Refers to the process tank that cannot be purified and reused. The main pollutants are organic matter and metal ions, such as etching waste liquid. Micro-etching waste liquid, developing stripping waste liquid, and the like. 3.5 pretreatment pretreatment Physical and chemical-based areas used for all types of wastewater on printed circuit boards before they are returned to reuse or integrated wastewater treatment. Method. The concentration of pollutants in various types of wastewater after pretreatment should meet the design water requirements of recycled water or integrated wastewater treatment.

4 Contaminants and pollution loads

4.1 Wastewater source and classification Printed circuit board wastewater can be divided into cyanide-containing wastewater, nickel-containing wastewater, high-concentration organic wastewater, and low concentration according to wastewater characteristics. Organic wastewater, complex copper wastewater, copper ammonia wastewater, copper-containing wastewater, mill wastewater, various waste water production processes are detailed in the appendix A. Wastewater containing precious metals such as gold and silver should be recovered on-line and generally not included in wastewater treatment projects. 54.2 Wastewater volume 4.2.1 The amount of wastewater generated by existing enterprises is determined through actual measurement. The amount of wastewater generated by newly-built enterprises can be based on product variety, production process, The analogy of production scale, work system and management level can also be determined according to material balance and water balance. When no data is available, it can be estimated as follows. 1) Tap water consumption method. design water quantity = total water consumption of workshop (production line) × (85% ~ 95%); among them, workshop (Production line) Total water consumption includes process water (each process, unit), waste water washing water, flushing floor water, and the like. 2) Sewage coefficient method. single panel is 0.14 t/m2 to 0.30 t/m2; double panel is 0.42 t/m2 to 1.32 t/m2; The board is pressed (0.42 0.29n) t/m2 ~ (1.3 0.49n) t/m2; the high density interconnect board (HDI board) is pressed (0.52 0.49n) t/m2 to (1.3 0.79n) t/m2; n is the number of layers added. 4.2.2 The proportion of various types of wastewater in the printed circuit board workshop can be determined by referring to Table 1. Table 1 Printed circuit board wastewater volume ratio table Number of wastewater source sources (%) 1 Cyanide-containing wastewater electroplated nickel gold and chemical nickel cleaning water 0.1~2 2 nickel-containing wastewater nickel plating cleaning water 0.1~2 3 High-concentration organic wastewater development, stripping, degumming primary cleaning water 3~6

4 low concentration organic wastewater

Secondary cleaning water after stripping and developing process; after filming, oxidation, After tin plating and maintenance of washing water, exhaust gas treatment, spray water, etc. 8~15 5 complex copper wastewater, electroless copper plating and other cleaning water, including EDTA and other complexes 3 ~ 8

6 Copper ammonia wastewater

Alkaline etching cleaning water, ammonium persulfate Micro-etching cleaning water under the system 1 to 5 7 Copper-containing wastewater electroplating copper, acid etching process cleaning water 20 ~ 45

8 grinding plate wastewater

Steel plate grinding line, surface treatment, ceramic grinding board line, etc. Waste water produced by the production process 15~30 4.2.3 The design of the water quantity should be determined in accordance with the following requirements. 1) The designed water volume should be determined according to the displacement of the workshop, combined with the construction scale of the near and long-term, and considering a certain margin. 2) The water volume of each treatment unit should be based on the water balance diagram (including the concentrated water produced by the water reuse system, sludge dewatering) The resulting filtrate, sewage plant floor, equipment washing water, etc.) are determined. 3) The initial rainwater and emergency accident displacement should be considered during design. 4.3 Wastewater quality The design water quality of the printed circuit board wastewater treatment project should be determined through actual measurement. Newly built enterprises can compare raw materials and production workers. 6 companies with similar art, equipment level and management level can also be determined according to material balance and water balance. For the absence of water quality data, refer to the range of major pollutant concentrations in Table 2. Table 2 Printed circuit board wastewater water quality table (Unit. mg/L, except pH) Serial number Waste water kind Main pollutants pH COD Cu Ni CN NH3-N Cyanide Waste water Total cyanide, total nickel 8~10 < 80 < 0.5 < 0.5 < 100 < 20 Nickel-containing Waste water Ionic nickel, Complex nickel 2 to 5 < 80 < 0.5 < 50 < 0.2 < 20 High concentration organic Waste water Organic matter, etc. >10 5000～ 2~10 < 0.5 < 0.2 < 20 Low concentration organic Waste water Organic matter, etc. < 10.200～600 10～50 < 0.5 < 0.2 < 20 Complex copper Waste water Complex copper, nitrate Nitrogen, organic Matter 5~10.200～300 150~250 < 0.5 < 0.2 < 20 Copper ammonia Waste water Ammonia nitrogen, complexation Copper, etc. 8～10.200～300 150~250 < 0.5 < 0.5 60～200 Copper Waste water Ionic copper, etc. 3～5 80～300 20～100 < 0.5 < 0.2 < 20 Grinding board Waste water Suspended matter, etc. 5 to 7 < 30 < 3 < 0.5 < 0.2 < 5

5 General requirements

5.1 General provisions 5.1.1 Printed circuit board enterprises should meet the requirements of clean production, improve cleaning efficiency and reuse of water, and reduce wastewater production. Health. After the wastewater is treated, it should be reused according to the production process requirements. 5.1.2 Printed circuit board enterprise construction equipment, storage tanks and pipelines involving heavy metals and other toxic and hazardous substances, or construction Facilities with soil pollution risks such as sewage treatment ponds and emergency pools shall be designed in accordance with the relevant national standards and norms. Anti-corrosion, leak-proof facilities and leak monitoring devices are built, constructed and installed to prevent contamination of soil and groundwater. 5.1.3 The printed circuit board wastewater treatment project construction project shall comply with the national environmental protection management system and the national capital construction procedures. And national regulations on mandatory standards and norms. 5.1.4 The construction scale of the printed circuit board wastewater treatment project shall be determined according to the maximum production capacity of the enterprise or the park, and shall be retained. 7 reserves, the balance is designed according to 10% to 20% of the workshop's displacement; the construction of the phased construction should meet the requirements of the overall planning of the enterprise, and Consider near-and long-term integration. 5.1.5 When the wastewater is directly discharged after treatment, it should meet the requirements of national and local emission standards and comply with the environmental impact assessment. The provisions of the batch documents, and meet the requirements of total pollutant control and discharge permit management; Water quality requirements for production water. 5.1.6 It is necessary to support the construction of secondary pollution prevention and control measures to ensure that solid waste, odor, noise and other pollutant emissions comply with GB. Provisions of 18597, GB 18598, GB 18599, GB 14554 and GB 12348. 5.1.7 Waste liquid and heavy metal sludge should be disposed of properly in accordance with the hazardous waste management regulations. Temporary waste and sludge in the enterprise Storage should comply with the provisions of GB 18597. 5.1.8 The wastewater treatment project shall be set up according to the Technical Requirements for Standardization and Remediation of Sewage Discharge Ports (Trial) (Environmental Supervision [1996] No. 470) Set the standard sewage outlet, install the metering and automatic monitoring system, and comply with HJ/T 353, HJ/T 354, HJ/T 355 and HJ/T 212 Requirements. 5.2 Source Control Printed circuit board enterprises should select advanced production technology and equipment according to the requirements of HJ 450 to achieve source emission reduction. Physical measures include. 1) It is preferred to use automatic water-saving production lines and equipment that can reduce the loss of working mother liquor and reduce the amount of washing water; 2) Fully recycle water, such as grinding plate wastewater, after filtration, recycling, acid waste water spray water recycling, etc.; 3) The production process should maximize the service life of the process tank and reduce the discharge of waste liquid; 4) using countercurrent rinsing; 5) Measure the water and strictly control the water consumption, such as installing water meters in the main water supply pipe on each production line; 6) Recycling solid waste materials such as copper powder, scraps, tin-lead slag, etc.; 7) Production of micro-etching, pickling, pickling, horizontal black (brown), etc. by sulfuric acid, hydrogen peroxide or sulfuric acid only Copper sulphate produced in the line or process; 8) Improve the hanging utensils to reduce the material consumption and pollutants caused by the deplating of the hangers. 5.3 Engineering composition 5.3.1 Printed circuit board wastewater treatment projects include. main engineering, auxiliary engineering, main equipment materials and production management and service Facilities. 5.3.2 The main works include. wastewater pretreatment, integrated wastewater treatment and sludge treatment facilities, and the main structures (construction) involved. 8 objects include wastewater collection tank, adjustment tank, physical and chemical reaction tank, biochemical reaction tank, sedimentation tank, sludge concentration tank, deep treatment tank, Discharge port, etc. 5.3.3 Auxiliary works include. power supply and distribution, water supply and drainage, roads, fire protection, testing and control. 5.3.4 Main equipment materials include sewage pumps, blowers, mixers, sludge dewatering machines, etc. 5.3.5 Production management and service facilities include office buildings, control rooms, analytical laboratories, duty rooms, etc. 5.4 Project site selection and overall layout 5.4.1 The site selection and overall layout of the wastewater treatment project should meet the requirements of GB 50014, and should be close to the production workshop to facilitate wastewater. Collected and have good emission conditions. 5.4.2 The layout of the wastewater treatment project should be reasonably divided according to the requirements of the processing unit function and the processing flow, which can be divided into. Treatment area, comprehensive treatment area, sludge treatment area, chemical storage and preparation area, office area, etc. 5.4.3 Wastewater Treatment Engineering The logistics transportation channel and the human flow channel should be set separately. Road settings should meet fire protection requirements. 5.4.4 The structure (construction) should be arranged in a centralized manner, and the spacing should be compact and reasonable, and meet the requirements of fire protection and construction. Wastewater treatment Equipment and equipment should be arranged according to the process flow, arranged neatly, easy to operate and maintain. Pipes should be arranged smoothly and reduce phase Cross-over, the overhead pipe should not be built above the sidewalk, and the underground pipe should be laid in the pipe trench. 5.4.5 Waste materials, chemicals, sludge and other materials should be classified into storage areas and take corresponding anti-corrosion and anti-corrosion Measures such as seepage, rain, and earthquake prevention.

6 Process design

6.1 General requirements 6.1.1 Priority should be given to treatment processes with high processing efficiency, energy conservation, and technical and economical rationality to ensure stable wastewater treatment projects. Constant, reliable and safe operation. 6.1.2 Waste water should be collected and classified according to the type and concentration of pollutants. Various types of wastewater are collected by pipeline After the collection, it will enter the corresponding regulation pool of the wastewater treatment project. The wastewater collection pipeline shall be laid with clear pipes and clearly marked. 6.1.3 The concentration of wastewater pollutants should meet the water quality requirements for the design of wastewater treatment projects. 6.1.4 The concentration of pollutants in the grinding plate wastewater is low, and the copper powder recycling machine is often used for online recycling or entering the copper-containing wastewater treatment system. 6.1.5 The selection of biochemical treatment process should fully consider the influence of heavy metals, low carbon to nitrogen ratio on the microbial wastewater in printed circuit board wastewater. ring. 6.1.6 Printed circuit board enterprises should set up an initial rainwater collection pool in the plant area, and the initial rainwater collection will enter the wastewater treatment project. 6.1.7 Printed circuit board enterprises should set up emergency accident pools. The volume of emergency accident pools should be considered comprehensively when the accident occurs. The maximum displacement of the 9th class of equipment, the amount of fire water at the time of the accident, and the amount of rainfall that may enter the emergency accident pool. Accident water should be detected and classified After that, enter the corresponding processing unit. 6.2 Process selection 6.2.1 Before the process design, comprehensively ...

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