HJ 2043-2014 Technical specificaions of starch industry wastewater treatment

GB 50256-2014 Electrical installation engineering: Specification for construction and acceptance of electrical equipment for crane operation GB 50257-2014 Electrical installation engineering Explosion and fire hazardous environment electrical installation construction and acceptance specifications 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 GB 50335-2016 Code for design of municipal wastewater reclamation and reuse GB 7251.1-1997 Low-voltage switchgear and control gear assemblies—Part 1:Type-tested and partially type-tested assemblies GB 7251.1-2005 Low-voltage switchgear and control gear assemblies—Part 1:Type-tested and partially type-tested assemblies GB/T 7251.1-2013 Low-voltage switchgear and controlgear assemblies—Part 1:General rules GB/T 7251.1-2023 Low-voltage switchgear and controlgear assemblies—Part 1:General rules GB 7251.2-1997 Low-voltage switchgear and control gear assemblies—Part 2:Particular requirements for busbar trunking systems(busways) GB 7251.2-2006 Low-voltage switchgear and controlgear assemblies—Part 2:Particular requirements for busbar trunking systems (busways) GB/T 7251.2-2023 Low-voltage switchgear and controlgear assemblies—Part 2:Power switchgear and controlgear assemblies GB 7251.3-1997 Low-voltage switchgear and control gear assemblies—Part 3:Particular requirements for low-voltage switchgear and control gear assemblies intended to be installed in places where unskilled persons have access for their use—Distribution boards GB/T 7251.3-2006 Low-voltage switchgear and control gear assemblies—Part 3:Particular requirements for low-voltage switchgear and control gear assemblies intended to be installed in places where unskilled persons have access for their use—Distribution boards GB/T 7251.3-2017 Low-voltage switchgear and controlgear assemblies—Part 3:Distribution boardsintended to be operated by ordinary persons(DBO) GB 7251.4-1998 Low-voltage switchgear and control gear assemblies—Part 4:Particular requirements for assemblies for construction sites(ACS) GB/T 7251.4-2006 Low-voltage switchgear and control gear assemblies—Part 4:Particular requirements for assemblies for construction sites(ACS) GB/T 7251.4-2017 Low-voltage switchgear and controlgear assemblies—Part 4:Particular requirements for assemblies for construction sites(ACS) GB 7251.5-1998 Low-voltage switchgear and control gear assemblies—Part 5:Particular requirements for assemblies intended to be installed outdoors in public places—Cable distribution cabinets (CDCs)for power distribution in networks GB/T 7251.5-2008 Low-voltage switchgear and controlgear assemblies—Part 5:Particular requirements for assemblies for power distribution in public networks GB/T 7251.5-2017 Low-voltage switchgear and controlgear assemblies—Part 5:Assemblies for power distribution in public networks GB/T 7251.5-2025 Low-voltage switchgear and controlgear assemblies—Part 5:Assemblies for power distribution in public networks GB 12801-1991 General principles for the requirements of safety and health in production process GB/T 12801-2008 General principles for the requirements of safety and health in production process GB 12801-2025 Generalrequi rements of safety in production process GB 156-2003 Standard voltages GB/T 156-2007 Standard voltages GB/T 156-2017 Standard voltages GB/Z 156-2025 Good practice for dynamic light scattering(DLS) measurements GB/T 18883-2002 Indoor air quality standard GB/T 18883-2022 Standards for indoor air quality GB 50009-2012 Load code for the design of building structures GB 50334-2017 Code for quality acceptance of municipal wastewater treatment plant engineering GBJ 115 GBJ 141 GBJ 87 GBZ 1 HJ 2023-2012 Anaerobic Granular Sludge Expansion Bed Reactor Wastewater Treatment Engineering Technical Specification HJ 576-2010 Anaerobic-Anoxic-Oxic Activated Sludge Wastewater Treatment Engineering Technical Specification HJ 577-2010 HJ 577-2010 Sequencing Batch Activated Sludge Processes for Sewage Treatment Engineering Technical Specification HJ 578-2010 Oxidation ditch activated sludge wastewater treatment engineering technical specifications 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 246-2006 Specifications for environmental protection product Suspended media HJ/T 247-2006 Specifications for environmental protection product Vertical shaft mechanical surface aerator HJ/T 251-2006 Specifications for environmental protection product Roots blower HJ/T 252-2006 Specifications for environmental protection product Middle and fine bubble diffusers HJ/T 259-2006 Environmental Protection Product Technical Requirements: Blade-type Aeration Device HJ/T 260-2006 Environmental Protection Product Technical Requirements: Blower Type Submersible Aeration Machine HJ/T 263-2006 Environmental Protection Product Technical Requirements: Jet Aeration Device HJ/T 278-2006 Environmental Protection Product Technical Requirements Single-stage High-speed Aeration Centrifugal Blower HJ/T 280-2006 Environmental Protection Product Technical Specification: Rotary Pump Aeration Device