GB 51414-2020 English PDFUS$1449.00 · In stock
Delivery: <= 8 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 51414-2020: Standard for water saving design in non-ferrous metals enterprises Status: Valid
Basic dataStandard ID: GB 51414-2020 (GB51414-2020)Description (Translated English): Standard for water saving design in non-ferrous metals enterprises Sector / Industry: National Standard Classification of Chinese Standard: P73 Word Count Estimation: 78,799 Date of Issue: 2020-01-16 Date of Implementation: 2020-08-01 Quoted Standard: GB 50014; GB 50015; GB/T 50050; GB/T 50102; GB/T 50109; GB 50336; GB 50555; GB 50863; GB/T 18920; GB/T 18921 Regulation (derived from): Ministry of Housing and Urban-Rural Development Announcement No. 41, 2020 Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China; State Administration for Market Regulation Summary: This standard applies to the planning, feasibility study, preliminary design, construction drawing design and other stages of new construction, expansion and reconstruction projects of non-ferrous metal enterprises. GB 51414-2020: Standard for water saving design in non-ferrous metals enterprises---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.1 General 1.0.1 This standard is formulated for rational use of water resources, improvement of water efficiency, water conservation, development and utilization of unconventional water sources, and construction of water-saving non-ferrous metal enterprises. 1.0.2 This standard applies to the planning, feasibility study, preliminary design, construction drawing design and other stages of new construction, expansion and reconstruction projects of non-ferrous metal enterprises. 1.0.3 The water-saving design of non-ferrous metal enterprises should conform to the development planning of local urban, industrial and agricultural water use, and rationally use water resources. 1.0.4 Water-saving measures should be included in the design of non-ferrous metal engineering projects. 1.0.5 The water-saving design of non-ferrous metal enterprises should use advanced technology, advanced equipment and advanced materials. 1.0.6 The water-saving design of non-ferrous metal enterprises shall not only comply with this standard, but also comply with the current relevant national standards. 2 Terminology and symbols2.1 Terminology 2.1.1 process water process water Water used in the production process of the non-ferrous metal industry, including process water, washing water, cooling water and other water. 2.1.2 Reclaimed water Industrial wastewater or domestic sewage can meet the graded use or meet the relevant water quality standards after treatment, and can be reused. 2.1.3 Backwater mineral processing backwater The concentrate or tailings are concentrated, filtered and dehydrated water and the backwater of the tailings pond. 2.1.4 main water internal cooling water Pure water circulating water for cooling rectifier elements or specific equipment. 2.1.5 auxiliary water external cooling water Circulating water that cools the main water through a heat exchanger. 2.1.6 water saving The process of adopting non-ferrous metal production processes, technologies and equipment with low water consumption, reducing water consumption, improving water reuse rate, and developing and utilizing unconventional water sources. 2.1.7 Wastewater reuse Wastewater collection, transportation, treatment and reuse, etc. 2.1.8 Initial rainwater Initial rainfall runoff after rainfall that carries pollutants and exceeds discharge standards. 2.1.9 noninitial rainwater Rainwater after initial runoff. 2.1.10 rainwater utilization Rainwater collection, transportation, treatment and utilization, etc. 2.1.11 Unconventional water resources Urban sewage reclaimed water, sea water, mine water, rainwater and other water resources. 2.1.12 Biologics Sewage treatment agents synthesized by using active ingredients in microorganisms or their metabolites. 2.1.13 Mechanical vapor recompression technology mechanical vapor recompression (MVR) Using the secondary steam and its energy generated by the evaporation system itself, the low-grade steam is upgraded to a high-grade steam heat source through the mechanical work of the compressor, and the energy-saving technology is used to provide heat energy to the Yanfa system and reduce the demand for external energy. 2.1.14 Multiple-effect evaporation technology (MEE) Multiple evaporators are connected end to end and operated in series. The secondary steam generated by the previous effect evaporator is used as the heating steam for the next effect rattan hair dryer, and the heat energy is reused many times to reduce heat energy consumption. Energy-saving technology. 2.1.15 thermal vapor recompression technology thermal vapor recompressor (TVR) According to the heat pump principle, part of the high-grade heat energy is consumed when the thermal steam is recompressed, and the low-grade secondary steam of the evaporator is transferred to the high-grade fresh steam, so that the high-grade secondary steam replaces the fresh steam to reheat the heat energy utilization technology of the evaporator. 2.1.16 dry dust collection (dry dust collection) dry dust collection Processes that do not use liquids to capture dust. 2.1.17 Indirect cooling indirect cooling The cooling water is in indirect contact with the cooled medium or equipment to indirectly reduce the temperature. 2.1.18 direct cooling direct cooling The cooling water is in direct contact with the cooled medium or equipment to directly cool down. 2.1.19 indirect open recirculating cooling water system Circulating cooling water system with indirect heat transfer between circulating cooling water and cooled medium, and direct contact between circulating water and atmosphere to dissipate heat. 2.1.20 direct open recirculating cool-ing water system The circulating cooling water system is a circulating cooling water system in which the circulating cooling water is in direct contact with the cooled medium to exchange heat, and the circulating water is in direct contact with the atmosphere to dissipate heat. 2.1.21 indirect closed recirculating cooling water system Circulating cooling water system with indirect heat transfer between circulating cooling water and cooled medium and circulating cooling water not in direct contact with the atmosphere. 2.1.22 reuse water system Untreated water system used in series in non-ferrous industrial enterprises.3 basic rules3.0.1 New construction, expansion and reconstruction of non-ferrous metal industrial enterprises must comply with national, industrial and local pollutant discharge standards. 3.0.2 Water-saving facilities for new construction, expansion and reconstruction of non-ferrous metal projects should be designed, constructed and put into operation at the same time as the main project. When water-saving facilities are constructed in stages, the commissioning time shall not lag behind the staged construction and commissioning time of the main project, and the scale of water-saving facilities shall not be reduced. 3.0.3 New construction, expansion and reconstruction of non-ferrous metal engineering projects should adopt advanced and low water consumption techniques, technologies and equipment. Existing non-ferrous metal enterprises should gradually phase out high water consumption processes, technologies and equipment through technological transformation. 3.0.4 Non-ferrous metal enterprises should give priority to using reused water when water conditions are met. 3.0.5 The design of water supply for non-ferrous metal enterprises should be based on water quality requirements. 3.0.6 The drainage design of non-ferrous metal enterprises should be classified according to the drainage water quality, collected, treated by quality, and reused in steps. 3.0.7 The water unit of non-ferrous metal engineering projects should be equipped with metering facilities. 3.0.8 Dry dust collector should be used for dust removal in the workshop. 3.0.9 Water supply and drainage structures should be treated with anti-seepage. 3.0.10 The water used for cleaning the floor should be reused. 3.0.11 Air-cooled air-conditioning units or waste heat steam refrigeration units should be used for small heating and refrigeration air-conditioning units. 3.0.12 The water-saving design of the enterprise's living facilities shall comply with the relevant provisions of the current national standard "Water-saving Design Standards for Civil Buildings" GB 50555. 3.0.13 The water consumption per ton of product shall be calculated according to the following formula. In the formula. Vut——water consumption per ton of product (m³/t product); Vz——In a certain measurement time, the total designed water consumption of the enterprise in the whole production process (m³); Q——In a certain measurement time, the design value of the enterprise's product output (t). 3.0.14 The recycling rate of water shall be calculated according to the following formula. In the formula. Rt - water reuse rate (%); Vi——In a certain measurement time, the total design water intake of the enterprise in the whole production process (m³); Vr——In a certain measurement time, the enterprise's design reuse water volume (m³) in the whole production process. In the formula. Vi1——the sum of water intake from self-built or jointly built water intake facilities, municipal water supply projects, etc. (m³); Vi2——the total amount of purchased water (water products) (m³); Vi3——the total amount of external water supply (water products) (m³).4 Water requirements for production process4.1 General provisions 4.1.1 Energy-saving and water-saving technological processes should be selected for the production process, and water-saving equipment should be selected. 4.1.2 The cooling water of general equipment must be recycled or used sequentially. 4.1.3 The air cooler should be preferred for air compressor and fan cooling. 4.1.4 The cooling water in the boiler blowdown cooling pool should give priority to reused water. 4.1.5 The dry dust collection process should be used for material crushing, transfer and dust collection of metallurgical process flue gas. 4.1.6 Steam condensate should be recycled. 4.1.7 The blowdown rate of steam boilers shall meet the following requirements. 1 When demineralized water is used as make-up water, the sewage discharge rate should not be greater than 5%; 2 When desalted water is used as make-up water, the blowdown rate should not exceed 2%. 4.1.8 In water-shortage areas, air-cooled steam turbine units should be used for steam turbine generators; seawater should be used for cooling water of main engine condensers in coastal areas, and a combination of direct seawater cooling and fresh water closed cooling system should be used for auxiliary cooling systems. 4.1.9 The flue gas of self-provided power plants should be desulfurized by dry or semi-dry method. When wet desulfurization is used, the waste water should be recycled. 4.1.10 The auxiliary water cooling water of the rectifier unit should be recycled, and an intercooled closed circulating water system should be used, and the replenishment water should be demineralized water. 4.1.11 When the water points are many, scattered and the water pipeline is long, flow distribution control measures should be taken. 4.1.12 The new water consumption of each process in non-ferrous metal enterprises shall comply with the provisions of Appendix A of this standard. 4.1.13 The process water used in each process of non-ferrous metal enterprises shall comply with the provisions of Appendix B of this standard. 4.2 Mining 4.2.1 Mine water gushing and drainage should be given priority as production water sources. 4.2.2 Watering and dust reduction shall be done in the form of spraying instead of direct watering from water supply pipes. 4.2.3 Dust prevention in open-pit mining should use water that complies with the current national standard "Water Quality of Urban Miscellaneous Water for Reuse of Urban Sewage" GB/T 18920. 4.3 Mineral dressing 4.3.1 The return water should be used first in the mineral processing process water, and the mineral processing plant should be equipped with an independent return water system. 4.3.2 Pumps with low water consumption should be used for slurry transportation. When a centrifugal pump is used, a mechanical seal should be used. 4.3.3 The reuse rate of beneficiation water for new construction, expansion and reconstruction of non-ferrous metal mining enterprises should not be less than 85%, and the reuse rate of beneficiation water for existing enterprises should not be less than 80%. 4.3.4 The recycling rate of mineral processing water for mixed rare earth ore and bastnaesite mines should reach 85% or above. The reuse rate of mining and dressing water for ionic rare earth mines should reach 90% or above. 4.4 Tailings 4.4.1 When designing tailings projects, the water-saving scheme should be determined according to natural conditions, tailings transportation and stockpiling conditions. 4.4.2 The tailings stockpiling method should be determined according to the water resources, climatic conditions and the recycling rate requirements of mineral processing water; when there is water shortage, drought or large evaporation, the tailings stockpiling method should be dry stockpiling. 4.4.3 The backwater facilities of the tailings system should meet the requirements of the production fluctuation of the mineral processing plant, and the backwater facilities of the tailings pond should have a surplus capacity according to the maximum return water consumption of the mineral processing plant. 4.4.4 During the operation of the tailings pond, the low water level in the pond should be adopted. 4.4.5 The anti-seepage facilities of tailings dams should be determined according to the current national standard "Code for Design of Tailings Facilities" GB 50863, and seepage collection and reuse facilities should be installed downstream of tailings dams with water seepage. 4.4.6 The weight concentration of tailings should not be lower than 35%, and should be determined after technical and economic comparison. 4.4.7 The flushing water for the ground of the tailings pumping station and the accident pool, the flushing water for tailings equipment and pipelines should be reused water. 4.4.8 Tailings conveying pipelines should use wear-resistant pipes according to the characteristics of the conveying medium. 4.5 Heavy non-ferrous metal smelting I Raw material warehouse and ingredients 4.5.1 Recycled water should be used for granulation and dust humidification. 4.5.2 When washing concentrate bags, containers and vehicles, water-saving washing technology should be used. The cleaning water should be recycled, and the supplementary water should be recycled water. II Copper Smelting 4.5.3 The water reuse rate of copper smelters should not be less than 97.5%. 4.5.4 Demineralized water should be used for cooling the smelting furnace and smoke mask, converting furnace and smoke mask, refining furnace and water-cooled fume hood, and the cooling water should be recycled. 4.5.5 The anode plate disc casting unit should recover steam condensed water. 4.5.6 The water for slag crushing and slag slow cooling should be recycled, and concentrated water should be used for supplementary water. 4.5.7 Concentrated water should be used for the preparation of yellow mud for the outlet, launder and tundish of the maintenance metallurgical furnace. 4.5.8 The copper matte granulation and blowing slag granulation of the double-flash or cold-state double-bottom blowing copper process should adopt the water-saving anhydrous granulation process. 4.5.9 Copper matte and copper slag should be sealed when water granulation process is adopted, and steam condensed water should be recycled. 4.5.10 Metallurgical furnace shell cooling should be provided with water jacket cooling instead of direct spray cooling. The water-cooled hood of the converter should adopt vaporization cooling hood, and the steam should be recycled. 4.5.11 The water leaking out during the stacking of slowly cooled copper slag and granulated slag should be recycled. 4.5.12 The condensed water from electrolysis and purification evaporation and concentration should be treated and reused. III Lead and Zinc Smelting 4.5.13 The water reuse rate of lead smelting projects should not be less than 98%, and the water reuse rate of zinc smelting projects should not be less than 95%. 4.5.14 The cooling water of lead smelting furnace, lead slag reducing furnace and fuming furnace shall be recycled, and demineralized water shall be used for supplementary water. 4.5.15 The cooling water of zinc roasting furnace blower, buried scraper conveyor and ball mill equipment should be recycled, and supplementary water should be recycled water, fresh water or softened water according to process requirements. 4.5.16 The cooling water of the water-cooled calcined sand cylinder cooler shall be recycled. 4.5.17 The cooling water for fuming furnaces, blast furnaces, and volatilization kilns should be recycled, and recycled water should be used for supplementary water. 4.5.18 The water for flushing slag in the fuming furnace should be recycled, concentrated water should be used for replenishment water, and steam condensate water should be recycled. 4.5.19 For cooling lead-zinc ingots, natural air cooling should be preferred, and water cooling should be recycled, and recycled water should be used for supplementary water. 4.5.20 The slag flushing water of the volatilization kiln should be recycled, and concentrated water should be used as supplementary water first. 4.5.21 Recycled water should be used as supplementary water for zinc leaching, electrowinning, and liquid purification processes. 4.5.22 The cooling water of zinc hydraulic station and feeding pipe should be recycled, and demineralized water should be used as supplementary water. 4.5.23 The cooling water of boiler circulation pump and sampler should be recycled, and softened water should be used as supplementary water. IV acid production and desulfurization 4.5.24 In water-scarce areas, air cooling can be used instead of water cooling to absorb acid. 4.5.25 The cooling water of the acid cooler and the desulfurization fan should be recycled, and the replenishment water should be recycled water. 4.5.26 The supplementary water for high-efficiency scrubbers should use recycled water. 4.5.27 The flushing water of the electrostatic precipitator should use recycled water. 4.5.28 Sewage acid recycling process should be selected as the sewage acid treatment process. 4.5.29 The slag produced by the acid sewage treatment process shall be dehydrated with high-efficiency dehydration equipment. 4.5.30 The filtrate and flushing water of the waste residue dehydrator should be recycled. V Production auxiliary workshop 4.5.31 Recycled water should be used for pouring materials in refractory workshops. 4.5.32 The condensed water of steam waste heat power generation should be recycled and used. 4.5.33 The cooling water of the oxygen plant equipment should be recycled. 4.5.34 The cooling water of steam waste heat power generation equipment should be recycled. 4.6 Light metal smelting I Alumina 4.6.1 The red mud dry storage process should be adopted for new alumina projects, and the filtrate after pressure filtration should be returned to the main process for red mud washing water. 4.6.2 The initial rainwater in the red mud storage yard should be recycled. 4.6.3 Equipment cooling water should be recycled. 4.6.4 A water cooler should be installed at the final flash discharge end of the pulp dissolution device and the final effect discharge end of the sodium aluminate solution evaporation device, and a cold source should be used to capture the recoverable moisture in the secondary steam; the captured water should be recycled. 4.6.5 The water contained in the aluminum hydroxide roasting flue gas should be recycled. 4.6.6 When pipelines are used to transport ore slurry hydraulically, the transport concentration of the slurry should be increased. 4.6.7 The steam-water loss rate of the thermal system of the thermal power plant boiler, the water replenishment rate of the closed auxiliary cooling water system, and the normal sewage discharge rate shall comply with the current national standards. 4.6.8 The reuse rate of industrial water shall not be less than 93%. II electrolytic aluminum 4.6.9 The electrolytic flue gas purification system should adopt the dry method, and when the wet method is us......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 51414-2020_English be delivered?Answer: Upon your order, we will start to translate GB 51414-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 5 ~ 8 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 51414-2020_English with my colleagues?Answer: Yes. The purchased PDF of GB 51414-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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