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HJ 2005-2010 English PDF

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HJ 2005-2010: Technical specification of constructed wetlands for wastewater treatment engineering
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HJ 2005-2010419 Add to Cart 3 days Technical specification of constructed wetlands for wastewater treatment engineering Valid

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Basic data

Standard ID: HJ 2005-2010 (HJ2005-2010)
Description (Translated English): Technical specification of constructed wetlands for wastewater treatment engineering
Sector / Industry: Environmental Protection Industry Standard
Classification of Chinese Standard: Z23
Word Count Estimation: 16,121
Date of Issue: 2010-12-17
Date of Implementation: 2011-03-01
Quoted Standard: GB 12348; GB/T 12801; GB 14554; GB 18918; GB 50003; GB 50011; GB 50013; GB 50014; GB 50015; GB 50016; GB 50019; GB 50034; GB 50040; GB 50052; GB 50053; GB 50054; GB 50069; GB 50070; GB 50140; GB 50204; GB 50231; GB 50268; GB 50335; GBJ 87; GBJ 141; GB/T 13663; HJ/T 15; HJ/T 96; HJ/T 101; HJ/T 103; HJ/T 353; HJ/T 354; HJ/T 355; HJ/T 377; CJJ 17; CJJ 60
Regulation (derived from): Department of Environmental Protection Notice No. 94 of 2010
Issuing agency(ies): Ministry of Ecology and Environment
Summary: This standard specifies the wetland sewage treatment works overall requirements, process design, construction and acceptance, operation and maintenance and other technical requirements. This standard applies to urban sewage, urban sewage treatment plant effluent and domestic sewage of a similar nature with other sewage treatment works, can be used as wetland sewage treatment project design, construction, and acceptance of completed construction projects after the completion of the technical operation and maintenance basis.

HJ 2005-2010: Technical specification of constructed wetlands for wastewater treatment engineering


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Technical specification of constructed wetlands for wastewater treatment engineering National Environmental Protection Standard of the People's Republic Technical specification for constructed wetland sewage treatment engineering Technical specification of constructed wetlands for wastewater treatment Engineering Released.2010-12-17 2011-03-01 Implementation Ministry of Environmental Protection released Ministry of Environmental Protection announcement No. 94 of.2010 In order to implement the "Environmental Protection Law of the People's Republic of China" and standardize the construction and operation of pollution control projects, the "Air Pollution Control Workers" are now approved. The 9 standards such as the “Technical Guidelines” are national environmental protection standards and are released. The standard name and number are as follows. I. Technical Guidelines for Air Pollution Control Engineering (HJ .2000-2010) 2. Technical Specifications for Flue Gas Desulfurization Engineering in Thermal Power Plants (HJ .2001-2010) Third, electroplating wastewater treatment engineering technical specifications (HJ .2002-2010) 4. Technical specifications for the treatment of tannery and fur processing wastewater (HJ .2003-2010) V. Technical Specifications for Slaughter and Meat Processing Wastewater Treatment Engineering (HJ .2004-2010) 7. Technical specifications for sewage coagulation and flocculation treatment (HJ .2006-2010) Eight, technical specifications for sewage air flotation treatment (HJ .2007-2010) 9. Technical Specifications for Sewage Filtration Treatment Engineering (HJ .2008-2010) The above standards have been implemented since March 1,.2011 and published by the China Environmental Science Press. The standard content can be found on the website of the Ministry of Environmental Protection. Special announcement. December 17,.2010

Content

Foreword..iv 1 Scope..1 2 Normative references..1 3 Terms and definitions. 2 4 Design water quantity and design water quality 3 5 General requirements..4 6 Process Design..5 7 Detection and Process Control..8 8 Major auxiliary works 9 9 Labor Safety and Occupational Health 9 10 Construction and acceptance..9 11 Operation and maintenance 10 Iv

Foreword

To implement the "Environmental Protection Law of the People's Republic of China" and the "Water Pollution Prevention and Control Law of the People's Republic of China" This standard is formulated for the construction, operation, maintenance and management of water treatment projects. This standard specifies the technical requirements for the design, construction and operation and maintenance of constructed wetland wastewater treatment projects. This standard is the first release. This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection. This standard was drafted. Shenyang Environmental Science Research Institute. This standard was approved by the Ministry of Environmental Protection on December 17,.2010. This standard has been implemented since March 1,.2011. This standard is explained by the Ministry of Environmental Protection. Technical specification for constructed wetland sewage treatment engineering

1 Scope of application

This standard specifies the technical requirements for the overall requirements, process design, construction and acceptance, operation and maintenance of constructed wetland wastewater treatment projects. begging. This standard is applicable to urban domestic sewage, urban sewage treatment plant effluent and other sewage treatment projects with similar properties to domestic sewage. As the technical basis for the completion, environmental protection and acceptance of the design, construction and construction of the constructed wetland sewage treatment project and the operation and maintenance after the completion.

2 Normative references

The contents of this standard refer to the terms in the following documents. For undated references, the valid version applies to this standard. GB 12348 Environmental noise emission standards for industrial enterprises GB/T 12801 General requirements for safety and hygiene of production processes GB 14554 Odor Pollutant Discharge Standard GB 18918 Pollutant discharge standard for urban sewage treatment plants GB 50003 masonry structure design specification GB 50011 seismic design code for buildings GB 50013 Outdoor Water Supply Design Code GB 50014 Outdoor Drainage Design Code GB 50015 Building Water Supply and Drainage Design Code GB 50016 Building Design Fire Code GB 50019 Heating, Ventilation and Air Conditioning Design Code GB 50034 Industrial Enterprise Lighting Design Specification GB 50040 power machine basic design specification GB 50052 design specification for power distribution system GB 50053 10 kV and below substation design specifications GB 50054 Low Voltage Distribution Design Specification GB 50069 Water supply and drainage engineering structure design specification GB 50070 concrete structure design specification GB 50140 Building Fire Extinguisher Configuration Design Specification GB 50204 Concrete Structure Engineering Construction Quality Acceptance Specification General specification for construction and acceptance of GB 50231 mechanical equipment installation engineering GB 50268 Water supply and drainage pipeline engineering construction and acceptance specifications GB 50335 Wastewater Recycling Engineering Design Specification GB J 87 Industrial Enterprise Boundary Noise Control Design Specification GB J 141 Code for construction and acceptance of water supply and drainage structures GB/T 13663 polyethylene (PE) pipe for water supply HJ/T 15 Environmental Protection Product Technical Requirements Ultrasonic Open Channel Sewage Flowmeter HJ/T 96 pH water quality automatic analyzer technical requirements HJ/T 101 Ammonia Nitrogen Water Quality Analyzer Technical Requirements HJ/T 103 Total Phosphorus Water Quality Automatic Analyzer Technical Requirements HJ/T 353 water pollution source online monitoring system installation technical specification HJ/T 354 water pollution source online monitoring system acceptance technical specification Technical specification for operation and assessment of HJ/T 355 water pollution source online monitoring system HJ/T 377 Environmental Protection Products Technical Requirements Chemical Oxygen Demand (CODCr) Water Quality Online Automatic Monitor CJJ 17 Technical Specifications for Urban Domestic Waste Sanitary Landfill CJJ 60 Urban Wastewater Treatment Plant Operation, Maintenance and Safety Technical Regulations Measures for the Administration of Environmental Protection Acceptance for Completion of Construction Projects (Order No. 13 of the State Environmental Protection Administration)

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 Constructed wetland constructed wetland Refers to the artificial construction of pools or trenches, the laying of anti-seepage and water-repellent layers on the bottom, filling the substrate layer of a certain depth, planting aquatic plants, and utilizing The triple synergy of the physical, chemical, and biological interactions of the substrate, plant, and microorganisms allows the sewage to be purified. According to the way of sewage flow, it is divided into surfaces Flowing constructed wetlands, horizontal subsurface flow constructed wetlands and vertical submerged artificial wetlands. 3.2 Surface flow constructed wetland surface flow constructed wetland Refers to the artificial wetland where the sewage flows above the surface of the substrate layer and flows horizontally from the inlet end of the tank body to the outlet end. 3.3 Horizontal subsurface flow constructed wetland Refers to the artificial wetland where the sewage flows below the surface of the substrate layer and flows horizontally from the inlet end of the tank body to the outlet end. 3.4 Vertical subsurface flow constructed wetland Refers to the constructed wetland where the sewage passes vertically through the matrix layer in the cell body. 3.5 Pretreatment Refers to the treatment set in front of the constructed wetland in order to meet the overall requirements of the project, the requirements for the influent water quality of the constructed wetlands and the reduction of the wetland pollution load. Art, such as grille, grit, primary sedimentation, homogenization, hydrolysis and acidification, stable pond, anaerobic, aerobic and so on. 3.6 Post-treatment Refers to the treatment process set after the constructed wetland, such as activated carbon adsorption, coagulation and sedimentation, in order to meet the requirements for discharge or reuse of the discharged water. Filtration, disinfection, stabilization of the pond, etc. 3.7 Matrix bed filler Refers to the filling materials that provide the wetland plants and microbial growth and filter and absorb the pollutants, including soil, sand, gravel, Zeolite, limestone, shale, plastic, ceramics, etc. 3.8 Hydraulic retention time Refers to the average residence time of sewage in constructed wetlands. The hydraulic retention time of the subsurface flow constructed wetland is calculated according to formula (1). Vt ε×= (1) Where. t--hydraulic residence time, d; V--the volume of the constructed wetland substrate in its natural state, including the matrix entity and its opening, closed pores, m3; Ε--porosity, %; Q--Design wetland design water volume, m3/d. 3.9 Surface organic load Refers to the five-day biochemical oxygen demand removed per unit square of constructed wetland per unit time. Calculated according to formula (2). 0 1( ) 10 Os QC Cq −× − ×= (2) Where. -- surface organic loading, kg/(m2 · d); osq Q--Design wetland design water quantity, m3/d; 0C - artificial wetland influent BOD5 mass concentration, mg/L; 1C - artificial wetland effluent BOD5 mass concentration, mg/L; A--Artificial wetland area, m2. 3.10 Surface hydraulic load Refers to the amount of sewage that can be received per unit square of constructed wetland per unit time. Calculated according to formula (3). Hs Qq = (3) Where. -- surface hydraulic load, m3/(m2 · d); hsq Q--Design wetland design water quantity, m3/d; A--Artificial wetland area, m2. 3.11 Hydraulic slope Refers to the water level drop value of the length of the seepage flow along the direction of the water flow in the constructed wetland. Calculated according to formula (4). 100%Hi Δ= × (4) Where. i - hydraulic gradient, %; ΔH--the water level drop value of the sewage in the length of the seepage path in the constructed wetland, m; L--The horizontal distance of sewage in the constructed wetland, m.

4 Design water quantity and design water quality

4.1 Design water quantity The determination of the amount of water to be designed shall comply with the relevant provisions of GB 50014. 4.2 Design water quality 4.2.1 When the project accepts urban domestic sewage, the design water quality can refer to the relevant provisions of GB 50014; the nature of acceptance and domestic sewage When other sewage is similar, the design water quality can be determined through investigation. 4.2.2 When the project accepts the water from the urban sewage treatment plant, the design water quality shall be in accordance with the provisions of GB 18918. 4.2.3 The influent water quality of the constructed wetland system shall meet the requirements of Table 1. Table 1 Influent water quality requirements of constructed wetland system Unit. mg/L Constructed wetland type BOD5 CODCr SS NH3-N TP Surface flow constructed wetland ≤50 ≤125 ≤100 ≤10 ≤3 Horizontal subsurface flow constructed wetland ≤80 ≤200 ≤60 ≤25 ≤5 Vertical subsurface flow constructed wetland ≤80 ≤200 ≤80 ≤25 ≤5 4.3 Contaminant removal efficiency of constructed wetland system The pollutant removal efficiency of the constructed wetland system can be referred to the data in Table 2. Table 2 Contaminant removal efficiency of constructed wetland system Unit. % Constructed wetland type BOD5 CODCr SS NH3-N TP Surface flow constructed wetland 40～70 50～60 50～60 20～50 35～70 Horizontal submerged artificial wetland 45～85 55～75 50～80 40～70 70～80 Vertical subsurface flow constructed wetland 50～90 60～80 50～80 50～75 60～80

5 General requirements

5.1 Construction scale 5.1.1 Factors such as the amount of sewage generated, the distribution, development planning and trends in the service area should be considered comprehensively. The term is mainly based on the principle that the scale can be expanded in the long run. 5.1.2 The construction scale is classified according to the following rules. a) The daily treatment capacity of the small constructed wetland sewage treatment project is < 3 000 m3/d; b) The daily treatment capacity of the medium-sized constructed wetland sewage treatment project is 3,000 to 10 000 m3/d; c) The daily treatment capacity of large-scale constructed wetland wastewater treatment projects is ≥10 000 m3/d. Note. The lower limit value includes this value, and the upper limit does not include this value. 5.2 Project composition 5.2.1 The project mainly includes. sewage treatment structure (construction) and equipment, auxiliary engineering and supporting facilities. 5.2.2 Sewage treatment structure (construction) and equipment include. pretreatment, constructed wetland, post-treatment, sludge treatment, malodor treatment and other systems. 5.2.3 Auxiliary works include. plant roads, fences, greening, electrical systems, water supply and drainage, fire protection, HVAC and air conditioning, buildings and structures And other projects. 5.2.4 Supporting facilities include. office, lounge, bathroom, dining hall, bathroom and other living facilities. 5.2.5 The constructed wetland system may consist of one or more constructed wetland units, including a water distribution device, a water collection device, and a foundation. Quality, anti-seepage layer, aquatic plants and aeration devices. 5.3 Site selection 5.3.1 It should meet the requirements of the local overall development plan and environmental protection plan, as well as comprehensive consideration of transportation, land ownership, land use status, Development and expansion, reuse of recycled water and other factors. 5.3.2 Natural background conditions, including land area, topography, meteorology, hydrology, and animal and plant ecological factors, should be considered and carried out. Surveys in geology, hydrogeology, etc. 5.3.3 It should be free from flood, tidal or guilty threats and does not affect flood safety. 5.3.4 It is advisable to choose depression or pond with a natural slope of 0% to 3%, and unused land. 5.4 General layout 5.4.1 The favorable conditions of the natural environment should be fully utilized, and the functions and process requirements of the building (structure) should be combined with the topography, climate and land. Quality conditions, easy to construct, maintain and manage factors, reasonable arrangements, compact layout. 5.4.2 The elevation of the plant area should make full use of the original terrain, meet the requirements of smooth drainage, reduce energy consumption and balance earthwork; The elevation design of the ground system should be combined with the natural slope as much as possible, and the gravity flow should be adopted. When it is necessary to upgrade, it should be upgraded once. 5.4.3 The outline of the constructed wetland system, the matching of different types of constructed wetland units, the configuration of aquatic plants, and the landscape sketches should be considered comprehensively. Factors such as facility construction will enable the project to achieve the corresponding landscape effect.

6 Process design

6.1 General requirements 6.1.1 Process design should comprehensively consider the amount of treated water, raw water quality, floor space, construction investment, operating costs, emission standards, and stability. Sex, as well as climatic conditions, vegetation types and geographical conditions in different regions, and should determine appropriate options through technical and economic comparisons. 6.1.2 System design such as pretreatment, post-treatment, sludge treatment, and odor treatment shall comply with the relevant regulations in GB 50014 and related industry specifications. set. 6.1.3 When the constructed wetland system consists of multiple artificial wetland units of the same type or different types, it can be divided into parallel, series and mixed. Combination method. 6.2 Process The basic process flow is as follows. a) When the project accepts urban domestic sewage and other sewage with similar properties to domestic sewage, the basic process is. Sewage pretreatment artificial wetland post-treatment discharge or reuse Sludge treatment Figure 1 Process flow chart for accepting urban domestic sewage or other sewage similar in nature to domestic sewage b) When the project accepts the water from the urban sewage treatment plant, the basic process flow is. Sewage artificial wetland post-treatment discharge or reuse Figure 2 Process flow chart for project acceptance of effluent from urban sewage treatment plant 6.3 Pretreatment 6.3.1 The degree and method of pretreatment should take into account factors such as sewage water quality, type of constructed wetland and effluent water quality requirements. Primary treatment such as grit, primary sedimentation, homogenization, physicochemical strengthening method, pre-AB method, hydrolysis acidification, floating biological bed, etc. Process, as well as secondary treatment processes such as SBR, oxidation ditch, A/O, and biological contact oxidation. 6.3.2 When the BOD5/CODCr of wastewater is less than 0.3, the hydrolysis acidification treatment process should be adopted. 6.3.3 When the SS content of sewage is greater than 100 mg/L, a sedimentation tank should be provided. 6.3.4 If the oil content in the sewage is greater than 50 mg/L, degreasing equipment should be provided. 6.3.5 When the DO of the sewage is less than 1.0 mg/L, an aeration device should be provided. 6.4 Constructed wetlands 6.4.1 Design parameters 6.4.1.1 The area of constructed wetland shall be determined according to the surface organic load of BOD on the 5th, and the requirements of hydraulic load shall be met. 6.4.1.2 The main design parameters of constructed wetlands should be determined according to the test data; when there is no test data, empirical data can be used or according to Table 3. The value of the data. Table 3 Main design parameters of constructed wetlands Constructed wetland type BOD5 load/[kg/(hm2·d)] Hydraulic load/[m3/(m2·d)] Hydraulic retention time/d Surface flow constructed wetland 15~50 < 0.1 4~8 Horizontal subsurface flow constructed wetland 80~120 < 0.5 1~3 Vertical subsurface flow constructed wetland 80 ~ 120 < 1.0 (recommended value. North. 0.2 ~ 0.5; South. 0.4 ~ 0.8) 1 ~ 3 6.4.2 Geometric dimensions 6.4.2.1 The geometry design of the subsurface flow constructed wetland shall meet the following requirements. a) The area of the horizontal subsurface flow constructed wetland unit should be less than 800 m2, and the area of the vertical subsurface flow constructed wetland unit should be less than 1 500 m2; b) the aspect ratio of ......
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