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Basic dataStandard ID: HJ 2302-2018 (HJ2302-2018)Description (Translated English): Guideline for available techniques of pollution prevention and control for pulp and paper industry Sector / Industry: Environmental Protection Industry Standard Word Count Estimation: 22,286 Date of Issue: 2018-01-04 Date of Implementation: 2018-03-01 Regulation (derived from): Ministry of Environmental Protection Notice No.4 of 2018 Issuing agency(ies): Ministry of Ecology and Environment HJ 2302-2018: Guideline for available techniques of pollution prevention and control for pulp and paper industry---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. (Pulp and paper industry pollution prevention feasible technical guide) National Environmental Protection Standard of the People's Republic Technical guide for pollution prevention and control in the pulp and paper industry Guideline for available techniques of pollution prevention And control for pulp and paper industry Published on.2018-01-04 2018-03-01 implementation Ministry of Environmental Protection released - i - ContentForeword...ii 1 Scope...1 2 Normative references...1 3 Terms and Definitions...1 4 Production process and pollution production... 2 5 Pollution Prevention Technology...4 6 Pollution Control Technology...7 7 Possible technologies for pollution prevention and control...11 Appendix A (informative appendix) Typical pulping and papermaking process and pollutant generation nodes...17 - ii -ForewordTo implement the Environmental Protection Law of the People's Republic of China, the Law of the People's Republic of China on the Prevention and Control of Water Pollution, Law on Pollution Prevention and Control, etc., Implementing the Notice of the General Office of the State Council on Printing and Distributing the Implementation Plan for Controlling Pollutant Discharge Permit System [2016] No. 81), establish and improve a feasible technical system based on emission standards, prevent environmental pollution, improve environmental quality, and promote This standard is formulated for the advancement of pollution prevention and control technology in the pulp and paper industry. This standard specifies the feasible technologies for the prevention and control of wastewater, waste gas, solid waste and noise pollution in the pulp and paper industry. Appendix A of this standard is an informative annex. This standard is the first release. This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection. This standard was drafted. Light Industry Environmental Protection Research Institute, China Paper Association, Environmental Engineering Assessment Center of the Ministry of Environmental Protection, National Pulp and Paper Research Institute, China Light International Engineering Co., Ltd., South China University of Technology. This standard was approved by the Ministry of Environmental Protection on January 4,.2018. This standard has been implemented since March 1,.2018. This standard is explained by the Ministry of Environmental Protection. - 1 - Technical guide for pollution prevention and control in the pulp and paper industry1 Scope of applicationThis standard specifies the feasible technologies for the prevention and control of wastewater, waste gas, solid waste and noise pollution in the pulp and paper industry. This standard is applicable to the discharge management of pollutant discharge in the pulp and paper industry, and can be used as environmental impact assessment for construction projects and national pollutants. The basis for the formulation and implementation of emission standards and the selection of pollution prevention technologies for pulp and paper industry enterprises. This standard does not apply to self-provided thermal power stations and industrial boilers in pulp and paper industry enterprises.2 Normative referencesThis standard refers to the following documents or their terms. For undated references, the latest edition applies to this standard. GB 18484 Hazardous Waste Incineration Pollution Control Standard GB 18485 Domestic garbage incineration pollution control standard GB 18597 Hazardous Waste Storage Pollution Control Standard GB 18599 General industrial solid waste storage and disposal site pollution control standards National Directory of Hazardous Wastes (Ministry of Environmental Protection, National Development and Reform Commission, Ministry of Public Security Order No. 39)3 Terms and definitionsThe following terms and definitions apply to this standard. 3.1 Pulp and paper industry Produce pulp from plants (wood, other plants) or waste paper, and/or use paper pulp to produce paper and cardboard Industry. 3.2 Feasible technology In the process of pollution prevention and control of China's pulp and paper industry in a certain period of time, pollution prevention technology, pollution control technology and environmental management are adopted. Measures to make pollutant emissions consistently meet or exceed national pollutant discharge standards, and have a certain scale of application technology. 3.3 Chemical pulping process Treating plant material with a solution containing chemicals under specific conditions, dissolving most of the non-cellulosic components to make paper The pulp production process mainly includes kraft pulping, caustic soda pulping and sulfite pulping. 3.4 Chemi-mechanical pulping process In the combination of chemical pretreatment and mechanical refining, the plant material is dissociated to produce a pulp production process. 3.5 Waste paper pulping process Waste paper is used as raw material, and it is processed by pulping, purification, etc., if necessary, deinking and bleaching to obtain pulp production process. - 2 - 3.6 Paper and paperboard process According to the requirements of use, the fibers are treated and suspended in a fluid medium, and intertwined on the net, and the fluid is removed by machine cutting. Quality to form the production process of sheet products. 3.7 Primary treatment In the wastewater treatment project, the pollutant treatment process is mainly based on filtration, sedimentation, air flotation and other solid-liquid separation measures. 3.8 Secondary treatment In the wastewater treatment project, the treatment process of pollutants with biochemical treatment as the main body after primary treatment. 3.9 Tertiary treatment The process of further processing of contaminants by physical and chemical methods after primary and secondary treatment in wastewater treatment projects.4 Production process and pollution production4.1 Chemical pulping 4.1.1 Chemical pulping production process. The plant raw materials are processed into the cooking section after being processed in the preparation section, and steamed under the action of chemical liquid. The boiled crude pulp is purified by washing and screening, and then pulp is produced by oxygen delignification and bleaching sections as needed. Usually wood (bamboo) Pulping by kraft method, non-wood (bamboo) is made by caustic soda or sulfite method. Kraft or caustic soda pulping The raw black liquor is evaporated and then burned into an alkali recovery furnace. The burned melt produces white liquor and white mud through the caustic chemical section. White liquor back to cooking The section is used as a cooking liquid. The white mud produced by the wood pulp production is calcined by lime kiln to produce calcium oxide for reuse in the harsh chemical section; non-wood pulp production The white mud produced is generally used as a raw material for preparing calcium carbonate or other uses, and generally does not support a lime kiln. Sulfite pulping and washing section The waste liquid is comprehensively utilized after evaporation. 4.1.2 Chemical pulping production technology The technology used in each section. the preparation section mainly includes dry stripping of logs, and dry preparation of bamboo. Raw materials, dry and wet preparation of wheat straw and reed, wet storage of bagasse; cooking section mainly includes continuous cooking and batch cooking; The washing section mainly includes press washing, displacement washing, pressure washing, vacuum washing, etc.; the screening section mainly includes pressure screening and full Closed pressure screening; oxygen delignification is an optional process, usually one or two stages of oxygen delignification; bleaching section is mainly elemental chlorine bleaching Process; the alkali recovery section consists of evaporation, combustion, causticization and lime recovery. 4.1.3 Waste water is mainly produced by the preparation, cooking, bleaching, evaporation and other sections. The pollutants are mainly chemical oxygen demand (CODCr), five days. Biochemical oxygen demand (BOD5), suspended solids (SS) and ammonia nitrogen. Concentration of each pollutant. CODCr 1200~2500 mg/L, BOD5 350~800 Mg/L, SS 250~1500 mg/L, ammonia nitrogen 2~5 mg/L. 4.1.4 Exhaust gas pollutants are mainly dust generated by preparation, cooking, washing, screening, black liquor (waste liquid) evaporation, sewage treatment plant, etc. The odor generated in the section, the alkali recovery furnace, the soot produced by the lime kiln, sulfur dioxide and nitrogen oxides. Sulphate pulping odor is mainly It is hydrogen sulfide, methyl mercaptan, methyl sulfide and dimethyl disulfide. The caustic soda pulp is mainly volatile organic compounds such as methanol, sulfurous acid. The odor of salt pulping is mainly ammonia, and the odor of sewage treatment plant is mainly ammonia and hydrogen sulfide. 4.1.5 Solid waste is mainly used for bark and wood (bamboo) chips, wheat bran, alfalfa leaves, cane pulp and sand dust generated in the preparation section. The knots and slag produced in the section, the green mud, white mud, lime slag produced by the alkali recovery section, and the sludge produced by the sewage treatment plant. - 3 - 4.1.6 Noise mainly comes from the operation of equipment such as peelers, chippers, transmissions, pumps, fans and compressors, as well as intermittent spraying or Venting, pressure, vacuum cleaning or purging. The noise level is typically 78~110 dB(A). 4.2 Chemical mechanical pulping 4.2.1 Chemical mechanical pulping production process. After the plant raw materials are processed in the preparation section, they are pre-impregnated under the action of chemical liquid. After the refining process, the raw materials are ground, and then bleached, washed, and screened to produce pulp. 4.2.2 Chemical machinery method. The technology used in each section of the pulping production process. the preparation section is mainly dry stripping of logs; the main section of the refining section It should include a length of refining and two-stage low-concentration refining; the washing section mainly includes screw press washing, vacuum washing, etc.; Includes pressure screening and fully enclosed pressure screening. 4.2.3 Waste water is mainly produced by the preparation of materials, wood chip washing, washing, screening, etc. The pollutants are mainly CODCr, BOD5, SS and Ammonia nitrogen. Concentration of each pollutant. CODCr 6000~16000 mg/L, BOD5 1800~4000 mg/L, SS 1800~3800 mg/L, Ammonia nitrogen 3~5 mg/L. The exhaust pollutants are mainly dust generated from the preparation; the odor generated by the sewage treatment plant is mainly ammonia and hydrogen sulfide; When the waste liquid is treated by an alkali recovery system, soot, sulfur dioxide and nitrogen oxides generated by the alkali recovery furnace are used. 4.2.4 Solid waste is mainly waste slag such as bark and wood chips generated in the preparation section; the slag generated in the screening section; the sewage treatment plant produces Sludge and so on. The noise mainly comes from the operation of peeling machines, chippers, refiners, transmissions, pumps, fans and compressors. And pressure, vacuum cleaning or purging. The noise level is typically 78~110 dB(A). 4.3 Waste paper pulping 4.3.1 Waste paper pulping production process. After the waste paper is sorted, it enters the pulping section and is disintegrated. After dissociating into fibers, it passes the slag removal and screening. The section is cleaned, and then deinked and bleached as needed to produce pulp. 4.3.2 Waste paper pulping production technology The technology used in each section. the preparation section is mainly for the separation of waste paper raw materials, and the deinking section mainly includes floating Deinking, washing and deinking are selected, and the bleaching section is mainly bleached with hydrogen peroxide. According to the quality of pulp, it can also be equipped with heat dispersion or fiber. Dimension classification technology. 4.3.3 Waste water is mainly produced by washing, screening, deinking and bleaching. The main pollutants are CODCr, BOD5, SS and ammonia nitrogen. Concentration of each pollutant. CODCr 1200~6500 mg/L, BOD5 350~2000 mg/L, SS 450~3000 mg/L, ammonia nitrogen 2~15 Mg/L. The exhaust gas is the odor generated by the sewage treatment plant, mainly ammonia and hydrogen sulfide. 4.3.4 Solid waste is mainly used for gravel, metal and plastic waste generated in the pulping section, and the ink particles and adhesive produced in the screening section are Agents, plastic chips and fillers, deinking slag from flotation, sludge from sewage treatment plants, etc. The noise mainly comes from the pulper and the mill. Equipment such as pulpers, heat dispersion systems, pumps, fans and compressors, as well as pressure, vacuum cleaning or purging processes. Noise level It is 85~110 dB(A). 4.4 Mechanism paper and cardboard 4.4.1 Process paper and paperboard manufacturing process. the purchased commercial pulp or self-produced pulp is pulped or refined by the beating section, and is sent by stream. After mixing and removing impurities in the section, the net is formed, dehydrated by pressing, dried in the drying section, and selected for sizing or coating according to product requirements. The paper or cardboard is produced by calendering and rolling paper. 4.4.2 Mechanisms used in various stages of mechanical paper and board manufacturing processes. The main technologies of the press section include wide nip presses and conventional presses; The supporting technology of dryer drying using drying cylinder mainly includes drying cylinder closed hood, bag ventilation and waste heat recovery; forming and pressing section can be used For paper machine white water recovery and fiber utilization, the sizing or coating section can use paint recycling technology. 4.4.3 Waste water is mainly produced by beating, flow feeding, forming, pressing, sizing or coating. The main pollutants are CODCr and BOD5. SS and ammonia nitrogen. Concentration of each pollutant. CODCr 500~1800 mg/L, BOD5 180~800 mg/L, SS 250~1300 mg/L, - 4 - Ammonia nitrogen 1~3 mg/L. The exhaust gas is the odor generated by the sewage treatment plant, mainly ammonia and hydrogen sulfide. 4.4.4 Solid waste is mainly the pulp produced by the beating and flowing section, the waste polyester net produced by the forming section, and the sewage treatment plant. Sludge, etc. The noise mainly comes from the operation of refiners, pumps, transmissions, fans and compressors, as well as pressure, vacuum cleaning or During the process of purging, the noise level is generally 78~110 dB(A).5 pollution prevention technology5.1 Chemical pulping 5.1.1 Dry peeling technology The logs are irregularly moved in the continuous peeling machine, and the bark is peeled off by friction and collision, and the peeling process does not use water. main Equipment includes cylindrical peeling machine and roller peeling machine. This technology is suitable for pulping enterprises that use logs as raw materials. Compared to wet peeling, this The water consumption of the technical tons of pulp is significantly reduced, and the water consumption of the tons of pulp is 3~10 tons. 5.1.2 Dry and wet preparation technology The raw materials such as wheat straw and reed are cut by a lawn mower, and then disintegrated and washed. Qualified grass pieces are dehydrated and fed through a screw The machine is sent for cooking and is usually used in conjunction with continuous cooking. The dryness of the raw materials prepared by the dry-wet method is about 40%, and the size is 20-40 mm. The technology has the advantages of high impurity removal rate and good purification effect, and can reduce the amount of alkali used for cooking and the amount of bleaching chemicals. 5.1.3 New vertical continuous cooking technology Including low solids cooking technology and compact cooking technology. The low solids cooking technology is to take the wood (bamboo) sheet immersion liquid and a large amount of off The cooking process of the lignin stage and the final delignification stage is carried out to greatly reduce the concentration of solids in the cooking liquor, which is the most Greatly reduce the organic matter in the large delignification stage cooking liquor. Compact cooking technology is in the stage of large delignification, by increasing hydrogen Oxygen ion and sulphide ion concentration increase the selectivity of sulphate cooking and increase the lignin removal rate at this stage, thereby reducing slowness The amount of residual lignin in the fast reaction stage. The main equipment is a vertical continuous digester (cooking tower), which is compared with traditional vertical continuous cooking. The technology has the characteristics of low cooking temperature, low power consumption, high pulp yield, low Kappa number and good floatability. This technique and subsequent oxygen delignification The combination of technology can reduce the Kappa number of the softwood pulp sent to the bleaching section by 10~14, and the Kappa value of the hardwood pulp or bamboo pulp by 6~10. The technique The technique is mainly applied to chemical wood (bamboo) pulp production enterprises. 5.1.4 Improved batch cooking technology Deep delignification by displacement and black liquor recirculation. The main equipment is vertical cooking pot and white liquor tank and black liquor at different temperatures. groove. This technology can reduce pulp Kappa number without affecting pulp performance. Compared with traditional batch cooking, this technology can effectively reduce cooking energy. Consumption, reducing peak steam consumption. 5.1.5 Horizontal tube continuous cooking technology The main equipment is a horizontal tube continuous digester. Compared with the traditional batch cooking technology, the crude pulp yield is increased by about 4%. It has the advantages of stable process, high automation and low operating cost. This technology is mainly suitable for chemical non-wood (bamboo) pulp production enterprises. 5.1.6 Pulp efficient washing technology Through the action of extrusion, diffusion and displacement, the dissolved organic matter and solubility in the coarse pulp are removed to the utmost with the least amount of water. Machine. The traditional vacuum washer has a washing loss of about 5~10 kg CODCr/t air-dried pulp, and the pulping concentration is 10%~15%. The amount of 5.7~9.0 t, and the washing system consisting of the press washer, the washing loss is about 5 kg CODCr/t air-dried pulp, the pulping concentration 25%~35%, the amount of liquid taken away by the ton of pulp is 1.9~3.0t. Under the same dilution factor, the press washer is more vacuum The water consumption of the washer can be reduced by 3~5 t/t air dry pulp. In addition, it is also possible to increase the squeezing process before the conventional washing machine such as a vacuum washer. The separation of solids and fibers in the waste liquid is achieved by mechanical extrusion with a small dilution factor. - 5 - 5.1.7 Closed screening technology A coarse filtration system that is completely closed with water. The main......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of HJ 2302-2018_English be delivered?Answer: Upon your order, we will start to translate HJ 2302-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of HJ 2302-2018_English with my colleagues?Answer: Yes. 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