HJ 2047-2015 Water hydrolysis and acidification reactor sewage treatment engineering technical specifications

GB 3836.15-2024 Explosive atmospheres—Part 15:Specification of electrical installations design,selection and erection GB 3836.16-2006 Electrical apparatus for explosive gas atmospheres—Part 16:Inspection and maintenance of electrical installation(other than mines) GB/T 3836.16-2017 Explosive atmospheres—Part 16:Electrical installations inspection and maintenance GB/T 3836.16-2022 Explosive atmospheres—Part 16:Electrical installations inspection and maintenance GB 3836.16-2024 Explosive atmospheres—Part 16:Specification of electrical installations inspection and maintenance GB 3836.17-2007 Electrical apparatus for explosive gas atmosphere—Part 17:Construction and use of rooms or buildings protected by pressurization GB/T 3836.17-2019 Explosive atmospheres—Part 17:Equipment protection by pressurized room “p” and artifically ventilated room “v” GB 3836.18-2010 Explosive atmospheres—Part 18:Intrinsically safe system GB/T 3836.18-2017 Explosive atmospheres—Part 18:Intrinsically safe electrical systems GB/T 3836.18-2024 Explosive atmospheres—Part 18:Intrinsically safe electrical systems GB 3836.19-2010 Explosive atmospheres—Part 19:Fieldbus intrinsically safe concept(FISCO) GB 3836.20-2010 Explosive atmospheres—Part 20:Equipment with equipment protection level (EPL) Ga GB/T 3836.21-2017 Explosive atmospheres—Part 21:Application of quality systems for equipment manufacture GB/T 3836.21-2022 Explosive atmospheres—Part 21:Application of quality management systemsfor Ex Product manufacture GB/T 3836.22-2017 Explosive atmospheres—Part 22:Protection of equipment and transmission system using optical radiation GB/T 3836.22-2023 Explosive atmospheres—Part 22:Protection of equipment and transmission system using optical radiation GB/T 3836.23-2017 Explosive atmospheres—Part 23:Group Ⅰ,category EPL Maequipment intended to remain functionalin atmospheres endangered by firedamp and/or coal dust GB/T 3836.24-2017 Explosive atmospheres—Part 24:Equipment protection by special protection“s” GB/T 3836.25-2019 Explosive atmospheres—Part 25:Requirements for process sealing between flammable process fluids and electrical systems GB/T 3836.26-2019 Explosive atmospheres—Part 26:Electrostatic hazards—Guidance GB/T 3836.27-2019 Explosive atmospheres—Part 27:Electrostatic hazards—Test GB/T 3836.28-2021 Explosive atmospheres—Part 28:Non-electrical equipment for explosive atmospheres—Basic method and requirements GB/T 3836.29-2021 Explosive atmospheres—Part 29:Non-electrical equipment for explosive atmospheres—Constructional safety “c”,control of ignition source “b”, liquid immersion “k” GB/T 3836.30-2021 Explosive atmospheres—Part 30:Equipment and components in explosive atmospheres in underground mines GB/T 3836.31-2021 Explosive atmospheres—Part 31:Equipment dust ignition protection by enclosure “t” GB/T 3836.32-2021 Explosive atmospheres—Part 32:Intrinsically safe systems with electronically controlled spark duration limitation GB/T 3836.33-2021 Explosive atmospheres—Part 33:Equipment in adverse service conditions GB/T 3836.34-2021 Explosive atmospheres—Part 34:Equipment assemblies GB/T 3836.35-2021 Explosive atmospheres—Part 35:Classification of areas for explosive dust atmospheres GB/T 3836.36-2022 Explosive atmospheres—Part 36:Electrical safety devices for the control of potential ignition sources from Ex Equipment GB/Z 3836.37-2025 Explosive atmospheres—Part 37:Equipment protection by 2-wire intrinsically safe ethernet concept (2-WISE) GB 50011-2010 Code for seismic design of buildings GB 50014-2006 Code for design of outdoor wastewater engineering GB 50014-2021 Code for design of outdoor wastewater engineering GB 50015-2019 Standard for design of building water supply and drainage GB 50016-2014 Code for fire protection design of buildings GB 50019-2015 Design code for heating ventilation and air conditioning of industrial buildings GB 50037-2013 Code for design of building ground GB/T 50046-2018 Code for anticorrosion design of industrial constructions GB 50052-2009 Code for design electric power supply systems GB 50057-2010 Code for design protection of structures against lightning GB 50069-2002 Structural design code for special structures of water supply and waste water engineering GB 50108-2008 Technical Code for Waterproofing of Underground Works GB 50141-2008 Code for construction and acceptance of water and sewerage structures GB 50204-2015 Concrete Structure Construction Quality Acceptance Standards GB 50205-2001 Code for acceptance of construction quality of steel structures GB 50205-2020 Standard for acceptance of construction quality of steel structures GB 50212-2014 Code for construction of building anticorrosive engineering GB 50222-2017 Code for fire prevention indesign of interior decoration of buildings GB 50222-1995 Code for Fire Prevention in Design of Interior Decoration of Buildings GB 50231-1998 General code for construction and acceptance of mechanical equipment installation engineering GB 50231-2009 General code for construction and acceptance of mechanical equipment installation engineering GB 50268-2008 Code for construction and acceptance of water and sewerage pipeline works GB 50275-2010 Code for construction and acceptance of fan,compressor and pump installation GBZ 1 GBZ 2.1 GBZ 2.2 HJ 2014-2012 Biological filter method for sewage treatment engineering technical specifications HJ 493-2009 Water quality: Sample preservation and management technical regulations HJ/T 242-2006 Specifications for environmental protection product Filter belt press HJ/T 245-2006 Specifications for environmental protection product Suspension type stuffing HJ/T 250-2006 Specifications for environmental protection product Rotating fine screen HJ/T 262-2006 Environmental Protection Product Technical Requirements: Grating Water Purification Machine HJ/T 283-2006 HJ/T 283-2006 Environmental Protection Product Technical Requirements: Box Type Press Filter and Plate Frame Press Filter HJ/T 335-2006 Environmental Protection Product Technical Requirements: Sludge Compressing and Dehydrating Integrated Machine HJ/T 336-2006 Environmental Protection Product Technical Requirements: Submersible Sewage Pump HJ/T 369-2007 Environmental Protection Product Technical Requirements: Water Treatment Additive Device HJ/T 91-2002 Surface Water and Wastewater Monitoring Technical Specification HJ 91.1-2019 Sewage monitoring technical specifications HJ 91.2-2022 Surface Water Environmental Quality Monitoring Technical Specification