Standard No.:	GB 50013-2018
English Name:	Code for design of outdoor water supply engineering
Chinese Name:	室外给水设计标准
Professional Classification:	GB    National Standard
Issued by:	AQSIQ, MOHRUD
Issued on:	2018-12-26
Implemented on:	2019-8-1
Status:	valid
Superseding:	GB 50013-2006 Code for Design of Outdoor Water Supply Engineering
Language:	English
File Format:	PDF
Word Count:	40000 words
Price(USD):	900.0
Delivery:	via email in 1 business day

1 General provisions 1.0.1 This standard is hereby formulated to standardize the design of outdoor water supply engineering, ensure the engineering design quality, meet the requirements of water flow, water quality and water pressure, and achieve the objectives of safety and reliability, advanced technology, economic rationality and convenient management. 1.0.2 This standard is applicable to the design for new construction, extension and renovation of permanent water supply engineering in towns and industrial areas. 1.0.3 The design of water supply engineering shall be based on the approved urban master plan and water supply system planning. Selection of water source, location of plants and stations, and determination of water transmission and distribution pipelines shall meet the requirements of relevant special planning. 1.0.4 The design of water supply engineering shall give comprehensive consideration to conservation of water resources, protection of water ecological environment and sustainable utilization of water resources, correctly handle various water use relationships and improve water use efficiency. 1.0.5 The design of water supply engineering shall implement the principle of land conservation and rational utilization of land resources. 1.0.6 The design of water supply engineering shall follow the principle of long-term planning, combining short-term and long-term planning, and giving priority to short-term planning. The short-term design period should be 5 to 10 years, and the long-term design period should be 10 to 20 years. 1.0.7 The design service life of the major structure of water supply engineering structures and the structure of underground main pipe for water transmission and distribution shall comply with the relevant provisions of the current national standard GB 50788 Technical code for water supply and sewerage of urban. The design service life of main equipment, apparatus and other pipelines should be determined by technical and economic comparison according to materials, product renewal cycle and convenience of replacement. 1.0.8 The design of water supply engineering shall actively adopt effective new technologies, new processes, new materials and new equipment on the basis of continuously summing up production practice experience and scientific research. 1.0.9 On the premise of ensuring the safety of water supply, the design of water supply engineering shall reasonably reduce the engineering cost and operation cost, lessen the environmental impact and facilitate the operation optimization and management. 1.0.10 In addition to this standard, the design of water supply engineering shall also comply with the requirements of the current relevant standards of the nation. 2 Terms 2.0.1 mixed well ground water intake structure consisting of partially penetrating large opening well and one or several tube well filters arranged below the bottom of the well 2.0.2 inverted layer graded gravel bed laid at the inlet of large opening well or infiltration gallery, with grain size from fine to coarse along the water flow direction 2.0.3 suction intank canal structure that connects the water inlet pipe (canal) with the suction sump (well), so that the inflow water flows evenly into the suction sump (well) 2.0.4 inflow runner water flow channel that connects the suction sump with the suction inlet of the water pump for improving the suction conditions of large water pump 2.0.5 biological pre-treatment water purification process that mainly uses biological action to remove ammonia nitrogen, foreign odor and organic micro-pollutants in raw water 2.0.6 shutter filter air-water backwash filter that may be equipped with single-layer or multi-layer filter materials, with water introduced at one side of the filter grid and drained through flap valve at the other side only when washing stops 2.0.7 flap valve valve that can be turned over within the range of 0° to 90° to form different opening degrees, with valve plate taking the long side as the rotation axis 2.0.8 ferrosoferric-coagulation sedimentation for defluorinate process in which the fluoride ions are removed from the water by filtration after adding substances with coagulability or those can generate sediments with fluoride into water to form a large number of destabilized colloidal substances or sediments, with the fluoride coagulated or precipitated consequently 2.0.9 activated aluminum process for defluorinate process in which the fluoride is removed from the water by using activated alumina filter material to adsorb and exchange fluoride ions 2.0.10 regeneration process in which the exchange capacity of ion exchanger or filter material has been restored as before with regenerant after its failure 2.0.11 adsorption capacity ability of a filter material or ion exchanger to adsorb certain substances or ions 2.0.12 fouling index overall indicator of the concentration and filtration characteristics of suspended solids and colloidal substances in the feed, and indicator of the clogging degree caused by the feed to the microporous membrane 2.0.13 chlorine disinfection process of oxidation and disinfection by adding liquid chlorine or sodium hypochlorite, bleaching powder and bleaching powder concentrate into water 2.0.14 ultraviolet (UV) reactor equipment for disinfection by irradiating water body with UV lamp, consisting of UV lamp, quartz casing, ballast, UV intensity sensor and cleaning system 2.0.15 closed vessel reactor UV reactor with UV lamp arranged in a closed pipeline   2.0.16 ozonation method for purifying water by using the direct oxidation of ozone in water and the oxidation ability of generated hydroxyl radicals 2.0.17 activated carbon adsorption tank treatment structure with single granular activated carbon as adsorption filler, also having biodegradation effect 2.0.18 granular activated carbon-sand filter filter that can remove turbidity and organic matters simultaneously by adding a thick sand filter layer under the carbon layer of the downflow activated carbon adsorption tank 2.0.19 inside-out hollow fiber membrane hollow fiber membrane that filters the water from inside to outside of the membrane under the action of pressure 2.0.20 outside-in hollow fiber membrane hollow fiber membrane that filters the water from outside to inside of the membrane under the action of pressure 2.0.21 pressurized membrane process membrane process in which water to be filtered is led under the action of positive pressure into a cylindrical pressure vessel filled with hollow fiber membrane for filtration 2.0.22 submerged membrane process membrane process in which the hollow fiber membrane is placed in a tank of water to be filtered, and water produced by the membranes is filtered under the action of negative pressure 2.0.23 dead-end filtration mode of filtration in which the water to be filtered completely penetrates through the membrane 2.0.24 cross-flow filtration mode of filtration in which the water to be filtered partially penetrates through the membrane and the rest only flows through the membrane surface 2.0.25 integrity test regular detection of pollutant removal capacity and membrane damage degree of the membrane system 2.0.26 module set filter unit that can operate independently in the pressurized membrane process system, consisting of membrane element, bracket, water collection and distribution pipe, air distribution pipe and various valves 2.0.27 membrane tank filter unit that can operate independently in the submerged membrane process system 2.0.28 membrane cassette basic filtration module in the membrane tank, including membrane element, bracket, water collection pipe and air distribution pipe 2.0.29 pressure decay test method of detecting the integrity of membrane system by monitoring the air pressure decay rate of membrane system based on bubble point principle 2.0.30 leak test method of locating the broken point of membrane by bubbles based on the bubble point principle 2.0.31 normal flux membrane flux when all module sets (membrane tanks) in the system are in filtration state under the conditions of design water temperature and design flow 2.0.32 maximum flux membrane flux when the minimum number of module sets (membrane tanks) in the system is in filtration state under the conditions of design water temperature and design flow   2.0.33 normal transmembrane pressure transmembrane pressure difference when all module sets (membrane tanks) in the system are in filtration state under the conditions of design water temperature and normal flux 2.0.34 maximum transmembrane pressure transmembrane pressure difference when the maximum allowable number of module sets (membrane tanks) in the system is in unfiltered state under the conditions of design water temperature and design flux 2.0.35 chemical stability degree of influence of various chemical reactions in water on water quality and pipelines, including water corrosion on pipelines, precipitation of insoluble substances, dissolution and release of corrosion products on pipe walls, formation and accumulation of disinfection by-products in water, etc. 2.0.36 biostability potential of biodegradable organic matters in finished water to support the growth of heterotrophic bacteria 2.0.37 Larson Ratio (LR) index used to relatively quantitatively predict the corrosion tendency of chloride ions and sulfate ions in water to metal pipes and dissolution and release tendency of corrosion products on pipe walls 2.0.38 adjusting tank structure used to adjust the inflow and outflow of water 2.0.39 drain tank adjusting tank mainly used to receive and adjust the backwash wastewater of the filter tank, also called recycling water tank when the backwash wastewater is reused 2.0.40 sludge discharge tank adjusting tank mainly used to receive and adjust the waste residuals in sedimentation tank

Foreword i 1 General provisions 2 Terms 3 Water supply system 4 Design flow 5 Intake 5.1 Selection of water source 5.2 Ground water intake structure 5.3 Surface water intake structure 6 Pump house 6.1 General requirements 6.2 Suction intank canal, suction sump (well) and water suction condition of pump 6.3 Suction pipe and the discharge pipe within pump house 6.4 Hoisting equipment 6.5 Pump unit layout 6.6 Pump house layout 7 Water transmission and distribution 7.1 General requirements 7.2 Hydraulic calculation 7.3 Long distance water transmission pipeline 7.4 Piping layout and laying 7.5 Pipe (canal) materials and appurtenances 7.6 Storage structure 8 General layout of waterworks 9 Water treatment 9.1 General requirements 9.2 Pre-treatment 9.3 Dosage of coagulant and coagulant aid 9.4 Coagulation, sedimentation and clarification 9.5 Filtration 9.6 Groundwater deironing and demanganize 9.7 Defluorinate 9.8 Dearsenicing 9.9 Disinfection 9.10 Ozonation 9.11 Activated carbon adsorption 9.12 Hollow fiber microfiltration and ultrafiltration membrane filtration 9.13 Stabilization treatment of water quality 10 Waste residuals treatment of waterworks 10.1 General requirements 10.2 Process flow 10.3 Adjusting 10.4 Thickening 10.5 Balancing 10.6 Dewatering 10.7 Waste residuals reclaiming and reusing 10.8 Sludge cake disposing and utilizing 11 Emergency water supply 11.1 General requirements 11.2 Emergency water resource 11.3 Emergency water treatment 12 Monitoring and control 12.1 General requirements 12.2 Online monitoring 12.3 Control 12.4 Computer control and management system 12.5 Monitoring system 12.6 Water supply information system Annex A Hydraulic parameter values (n, Ch, Δ) for pipe friction head loss calculation Explanation of wording in this standard List of quoted standards