GB/T 50109-2014 English PDFUS$1539.00 · In stock
Delivery: <= 10 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 50109-2014: Design code for softening and demineralization of industrial water Status: Valid GB/T 50109: Historical versions
Basic dataStandard ID: GB/T 50109-2014 (GB/T50109-2014)Description (Translated English): Design code for softening and demineralization of industrial water Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: P42 Classification of International Standard: 13.060.25 Word Count Estimation: 70,724 Date of Issue: 12/2/2014 Date of Implementation: 8/1/2015 Older Standard (superseded by this standard): GB/T 50109-2006 Quoted Standard: GB 50335; GB/T 50619; GB 209; GB 320; GB/T 534; CJ 43; HG/T 4120 Regulation (derived from): Housing and Urban-Rural Development Ministry Bulletin No. 643 Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China; General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Summary: This Standard applies to design pre-treatment and wastewater treatment systems water. GB/T 50109-2014: Design code for softening and demineralization of industrial water---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 specification is formulated in order to improve the design level of industrial water softening and desalination, to achieve safety, reliability, advanced technology, and economical rationality. 1.0.2 This code is applicable to the design of newly built, expanded and reconstructed industrial water softening and desalination systems. This specification does not apply to the design of water pretreatment and wastewater treatment systems. 1.0.3 The design of industrial water softening and desalination systems should comply with the following principles. 1 System selection and layout should be carried out according to the planned capacity and production characteristics of the main project and determined by technical and economic comparison. When building in phases, the design should reserve expansion conditions. 2.Wastewater treatment facilities should be constructed as a complete set. 3 The expansion or reconstruction design of the industrial water softening and desalination treatment station should make rational use of the original facilities. 4 Actively and prudently adopt new techniques, new technologies, new materials, and new equipment in light of the specific conditions of the project. 1.0.4 The industrial water softening and desalting design shall not only comply with this specification, but also comply with the current relevant national standards. 2 terms2.0.1 Nanofiltration Membrane screening and filtration technology, the filtration accuracy is 0.001μm～0.01μm. 2.0.2 Electrodeionization Fill the anion and cation mixed ion exchange resin in the fresh water chamber of the electrodialyzer, combine electrodialysis and ion exchange, remove the ion content in the water, and use the polarization phenomenon in the electrodialysis process to electrochemically regenerate the ion exchange resin. 2.0.3 softened water softened water Water from which most or all calcium and magnesium ions have been removed.3 water treatment station3.1 General provisions 3.1.1 The general layout of the water treatment station shall meet the following requirements. 1 It should be close to the main water users, and the laying of water source and water pipelines should be considered at the same time; 2 The transportation should be convenient; 3 It should be far away from places with flying dust such as coal yards and ash yards, and should be located on the windward side of the perennial dominant wind direction of structures that emit harmful gases, smoke, and water mist. 3.1.2 The water treatment station should be an independent building, and it can also be built together with other buildings when conditions permit. 3.1.3 The water treatment station should be equipped with instrument control, chemical analysis, equipment maintenance, drug storage and auxiliary rooms. When there are central laboratories and maintenance workshops, the area of auxiliary rooms can be reduced accordingly. 3.1.4 The expansion project should be designed and arranged in combination with the original systems, equipment layout and actual operation conditions. 3.1.5 Facilities for preventing chemical damage shall be provided in the area where acid-base equipment is arranged. 3.2 Equipment layout 3.2.1 The equipment layout of the water treatment station shall meet the following requirements. 1 It should be arranged in an orderly manner according to the process flow; 2 should save land; 3 The noise interference to the main operating area should be reduced; 4 It should be easy to operate and maintain. 3.2.2 The clarifier (device), filter (device) and various water tanks can be arranged outdoors, and a walkway or operating platform should be arranged on the top. Clarification and filtration equipment in cold or windy areas should be arranged indoors. 3.2.3 The ion exchange equipment for softening and desalination should be arranged indoors. When the water treatment equipment is arranged outdoors, its operation and operation parts, instruments, sampling devices, valves, etc. should be arranged in a centralized manner, and measures should be taken to prevent rain, freeze and sun. 3.2.4 When the softening and desalination ion exchange equipment is arranged face to face, the net distance between the operation channels after the valve is fully opened should not be less than 2m, and should meet the maintenance needs of the equipment. The net width of the patrol inspection channel should not be less than 0.8m, and the net distance between equipment should not be less than 0.4m. 3.2.5 For water treatment equipment and valves that are frequently overhauled, it is advisable to set up an overhaul platform, forklift or lifting device according to their structure, quantity, and weight of lifting parts. 3.2.6 Acid-base storage tanks can be arranged outdoors, and alkali storage tanks in cold regions should be arranged indoors. The acid-base storage tank should be close to the wastewater neutralization tank. 3.2.7 The acid-base storage tank and water treatment chemicals should be stored near the water treatment room and be convenient for transportation. 3.2.8 Drug storage equipment and dosing equipment should be arranged in a separate area or room, and measures such as anti-corrosion and safety protection should be taken, and forced ventilation facilities should be installed indoors. 3.2.9 Air compressors, Roots blowers and water pumps should be arranged in separate rooms, and noise reduction measures should be taken. 3.2.10 The control room and laboratory should have daylighting and lighting, the control room and precision instrument room should be equipped with air-conditioning devices, and other laboratories should be equipped with air-conditioning devices. 3.2.11 Nanofiltration, reverse osmosis, and electric desalination devices should be arranged indoors. When two floors are required due to site constraints, their feed pumps should be arranged on the bottom floor. 3.2.12 There should be room for replacement of filter elements in the arrangement of security filters, and space for replacement of membranes not less than 1.5 times the length of a single membrane element should be left at both ends of nanofiltration and reverse osmosis membrane shells. 3.2.13 The electrostatic desalination device should be arranged reasonably according to its structure, and it should be convenient for maintenance and module replacement. The water supply tank of the electric desalination device should be arranged indoors. 3.3 Piping arrangement 3.3.1 The piping layout shall meet the following requirements. 1.The pipeline should be short, with few accessories, neat and beautiful; 2 It should be convenient for installation and maintenance; 3 It should not affect the lifting and handling of the equipment; 4 Standard pipe fittings should be used; 5 It should not be arranged above the switchboard and control panel. 3.3.2 When laying pipelines buried in the ground, the buried laying depth shall be determined according to conditions such as ground load and frozen soil depth, and the distance between the top of the pipe and the ground shall not be less than 0.7m. Pipelines with strong corrosive media should not be laid underground. 3.3.3 The laying of lime emulsion pipelines shall meet the following requirements. 1 The gradient of the artesian pipe shall not be less than 5%; 2 The flow velocity in the pipe should not be less than 2.5m/s; 3 Pipes should reduce elbows, U-shaped pipes, etc.; 4 The elbows, tees and pipe sections passing through the wall of the pipeline should be flanged; 5 When the length of the horizontal straight pipe exceeds 3m, it shall be connected with flanges in sections. 3.3.4 Pipelines conveying corrosive media such as concentrated acid and lye should not be arranged above pedestrian walkways and rotating equipment. When overhead laying is required, protective covers or baffles should be provided for protection. 3.3.5 The layout height of manually operated valves should not exceed 1.6m, and valves higher than 2m should have transmission devices or operating platforms.4 Softening and desalination4.1 General provisions 4.1.1 Before designing the industrial water softening and desalination system, the water quantity and water quality data of all available water sources should be obtained, and the water quality analysis report should comply with the provisions of Appendix A of this specification. Representative water quality analysis data should be selected as the design basis, and the required water source data should meet the following requirements. 1 Surface water and reclaimed water should be monthly data in recent years, and should not be less than 12; 2 Groundwater, mine drainage, and seawater should be the quarterly data in recent years, preferably 4 copies. 4.1.2 For surface water, it is necessary to understand the water quality changes and possible pollution in the wet and dry seasons over the years, and obtain corresponding water quality analysis data; The water quality changes caused by it; for mine drainage and groundwater in limestone areas, the stability of water quality should be understood; for reclaimed water, its source and composition should be known, and the advanced treatment of reclaimed water should be understood. 4.1.3 When designing industrial water softening and desalination systems, the user's external water supply volume and water quality requirements should be known, and the requirements for water use and drainage in environmental impact assessment and water resource demonstration should also be understood. 4.1.4 The process selection of industrial water softening and desalination system should be determined after technical and economic comparison based on factors such as water source type, water quality characteristics, external water supply quality requirements, plant site conditions and environmental protection requirements. 4.1.5 The influent water of the softening and desalination equipment shall be pretreated to meet the requirements of the influent water quality of the subsequent process. 4.1.6 The pretreatment process shall be determined according to the water quality of the water source, the water quality requirements of the subsequent treatment process, the treated water volume and test data, and shall refer to the operation experience of similar projects, combined with local conditions, and determine through technical and economic comparison. The water quality requirements for the softening and desalination device shall meet the requirements in Table 4.1.6. Table 4.1.6 Water Quality Requirements for Softening and Desalting Devices Note. 1 The inlet water temperature of strong alkali type II resin and acrylic resin should not exceed 35°C; 2 The optimal design water temperature of the reverse osmosis device should be 20°C to 25°C; 3 The chemical oxygen consumption index of the ion exchange desalination device refers to the requirement of using gel-type strong base anion resin, and it can be appropriately relaxed for weak acid and weak base resin; 4 The total dose of chloride ion tolerance within the life of the membrane should be less than 1000h·mg/L; 5.The iron content of the influent of the ion exchange equipment regenerated by hydrochloric acid and sulfuric acid should be less than 2mg/L, and the iron content of the influent of the sodium softening ion exchange equipment should be less than 0.3mg/L; 6 The oxidation rate of iron depends on the content of iron, the concentration of dissolved oxygen in water and the pH value of water. When pH< 6 and dissolved oxygen should be less than 0.5mg/L, the allowable maximum Fe2 should be less than 4mg/L; 7 The feed water of the electric desalination device should be the product water of the reverse osmosis device. The conductivity (25°C) includes the equivalent conductivity of carbon dioxide, and the expected value should be less than 20 μS/cm. 4.1.7 When the incoming water temperature affects the treatment effect, heating or cooling measures should be taken. 4.1.8 For water sources of different water quality, the treatment process shall be reasonably selected and shall comply with the following regulations. 1 When seawater is used as the water source, it shall comply with the relevant provisions of the current national standard "Code for Design of Seawater Desalination Engineering in Thermal Power Plants" GB/T 50619; 2 When reclaimed water is used as the water source, it shall comply with the relevant provisions of the current national standard "Code for Design of Sewage Recycling Engineering" GB 50335; 3 When the mine drainage is used as the water source, the specific treatment process should be determined according to the detailed water quality data; 4 For groundwater with high content of iron and manganese, aeration, sedimentation, filtration and other treatment processes should be adopted; 5 Reverse osmosis process Influent water is pretreated by coagulation and clarification, and then adopts fine sand filtration, ultrafiltration or microfiltration membrane filtration and other processes. 4.1.9 When designing the softening and desalination system, the supply of anti-corrosion materials, chemicals, filter materials, various membranes, ion exchange resins, valves and instruments, as well as the quality, price, packaging and transportation methods, etc. should be mastered. 4.1.10 The water output of the softening and desalination system shall be determined based on the water supply plus the system's self-use product water. 4.1.11 The working exchange capacity of the ion exchange resin should be determined according to the performance parameters of the resin or with reference to the operating experience under similar conditions. 4.1.12 The permeated water flux of the reverse osmosis membrane shall be determined according to the influent water quality, the pretreatment method and the characteristics of the membrane elements, and the designed membrane flux of the composite membrane reverse osmosis device shall be selected according to the provisions in Table 4.1.12. Table 4.1.12 Design membrane flux of composite membrane reverse osmosis device 4.1.13 The softening and desalination system and equipment selection should reduce the discharge of waste acid, waste alkali, waste residue and other harmful substances, and take treatment and disposal measures to meet relevant environmental protection requirements. 4.1.14 The wastewater from the softening and desalination system should be classified and collected according to the characteristics of the wastewater. 4.2 Softening and pre-desalination system 4.2.1 When the dissolved solids in raw water are greater than 400mg/L, pre-desalination devices such as reverse osmosis should be used; when it is less than 400mg/L, it should be determined by technical and economic comparison. 4.2.2 Softening system selection can be carried out according to Table 4.2.2. Table 4.2.2 Selection of softening system Note. 1 Symbols in the table. H-strong acid cation exchanger; D-carbon dioxide removal device; Hw-weak acid cation exchanger; Na-sodium ion exchanger; CaO-lime treatment device; 2 Weak acid cation exchanger is used alone to remove carbonate hardness; 3 The effluent hardness of the weak acid cation exchanger is equal to the sum of the raw water non-carbonate hardness and the effluent alkalinity, and the effluent alkalinity refers to the average effluent alkalinity. 4.2.3 During lime softening treatment, the raw water should be heated to 30°C to 40°C, and iron salt should be used as coagulant. 4.2.4 Nanofiltration softening system can be used for water source with high hardness. 4.3 Desalination system 4.3.1 The desalination system shall adopt ion exchange chemical desalination or electric desalination according to the requirements of influent water quality and desalted water quality. 4.3.2 The selection of desalination system can be carried out according to Table 4.3.2. Table 4.3.2 Selection of desalination system Note. 1 Symbols in the table. H-strong acid cation exchanger; Hw-weak acid cation exchanger; OH-strong base anion exchanger; OHw-weak base anion exchanger; D-carbon dioxide removal device; RO-reverse osmosis device; H /OH-anion and cation mixed ion exchanger; electric desalination-electric desalination device; MSF-multi-stage flash evaporation device; MED-low temperature multi-effect distillation device; 2 When the requirements on the quality of the effluent are not strict, the conductivity of the effluent from the mixed bed can be controlled to be less than 0.20 μS/cm; when the SiO2 is less than 20 μg/L, the operating cycle of the mixed bed should be extended. 4.3.3 When the ratio of strong acid and weak acid anions in the influent water quality is relatively stable, the cation and anion exchangers in the first-stage desalination system can adopt a unit series system, and the resin volume of the anion exchanger should be the calculated value plus 10%~ 15% margin. 4.3.4 When the ratio of strong acid and weak acid anion in the influent water quality changes greatly, the cation and anion exchangers in the first-stage desalination system should adopt a parent control parallel system, and a manual isolation valve should be installed at the inlet and outlet of each ion exchanger. When the number of ion exchangers of the same type is 6 or more, it is advisable to group them. 4.3.5 The water outlet device adopts a resin trap on the outlet pipe of the ion exchanger with a perforated plate and a water cap. 4.3.6 When the silicon content in the water entering the anion exchanger is high, the alkali regeneration solution should be heated. 4.4 Lime softening and ion exchange equipment 4.4.1 Lime softening and clarification equipment should use clarifiers (device) or sedimentation tanks. Clarify that the equipment design should meet the following requirements. 1 There should not be less than 2 sets of clarification equipment. When one equipment is overhauled, the maximum output of the remaining equipment should meet the requirements of normal water supply; 2 The ascending flow rate of clarification equipment should be determined according to its type, raw water quality, water temperature, treatment agent and dosage, as well as operating experience of similar projects or through experiments; 3 When selecting a clarification tank, attention should be paid to the influence of the temperature fluctuation of the inlet water on the treatment effect; when a raw water heater is installed, an automatic temperature adjustment device and a water temperature monitor for the clarification tank should be installed; 4 The water inlet of the clarification equipment should be separately equipped with a flow measuring device and a body sampling device. 4.4.2 The filter pool (apparatus) should not be less than 2 grids (units), and it should be equipped with air and water backwashing facilities. The number of backwashing for each piece of equipment can be 1 to 2 times per day and night. Filter pool (device) design should meet the following requirements. 1 The backwashing, forward washing water inflow and drainage of the filter (device) should be restricted flow valve or restricted flow orifice; 3 The total effective volume of the desalinated water tank and the softened water tank should be determined according to the user's water consumption requirements and industry standards, and the water replenishment volume should not be less than 1 hour. At the same time, it should......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 50109-2014_English be delivered?Answer: Upon your order, we will start to translate GB/T 50109-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 6 ~ 10 working days. 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