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Basic dataStandard ID: HJ 2024-2012 (HJ2024-2012)Description (Translated English): Technical specifications for completely mixed anaerobic reaction tank in wastewater treatment Sector / Industry: Environmental Protection Industry Standard Classification of Chinese Standard: Z23 Word Count Estimation: 20,216 Date of Issue: 12/24/2012 Date of Implementation: 3/1/2013 Quoted Standard: GB 3096; GB 12348; GB 12801; GB 18597; GB 18599; GB 50014; GB 50015; GB 50016; GB 50040; GB 50053; GB 50187; GB 50204; GB 50222; GB 50231; GB 50268; GB 50141; GBJ 87; GBZ 1; GBZ 2.1; GBZ 2.2; CJ 3025; CJJ 60; CJ/T 51; JGJ 37; HJ/T 91; HJ/T 242; HJ/T 279; Regulation (derived from): Ministry of Environmental Protection Notice 2012 No. 72 Issuing agency(ies): Ministry of Ecology and Environment Summary: This standard specifies the process design completely mixed anaerobic wastewater treatment tank, the main equipment, testing and control, construction and acceptance, operation and maintenance of technical requirements. This standard applies to the use of HJ 2024-2012: Technical specifications for completely mixed anaerobic reaction tank in wastewater treatment---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. Technical specifications for completely mixed anaerobic reaction tank in wastewater treatment National Environmental Protection Standard of the People's Republic Fully mixed anaerobic reaction cell Wastewater treatment engineering technical specification Technical specifications for completely mixed anaerobic reaction tank In wastewater treatment Published on.2012-12-24 2013-3-1 implementation Ministry of Environmental Protection released ContentPreface II 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 14 8 Major auxiliary projects.15 9 Construction and acceptance..16 10 Operation and maintenance 18ForewordTo implement the Law of the People's Republic of China on Water Pollution Prevention and Control, standardize the complete mixed anaerobic reaction tank in wastewater treatment Application, prevention of water pollution, protection of human health, the development of this standard. This standard specifies the process design, main equipment, testing and control, construction and acceptance of a fully mixed anaerobic reactor. Technical requirements for operation and maintenance. This standard is a guiding standard. 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 is mainly drafted by. China Environmental Protection Industry Association, Harbin Institute of Technology, Dalian Nationalities College, Tsinghua University University, Harbin Engineering University, Shaoxing Water Conservancy Construction Engineering Co., Ltd., Beijing Municipal Environmental Protection Research Institute. This standard was approved by the Ministry of Environmental Protection on December 24,.2012. This standard has been implemented since March 1,.2013. This standard is explained by the Ministry of Environmental Protection. Complete mixed anaerobic reaction tank wastewater treatment engineering technical specification1 Scope of applicationThis standard specifies the process design, main equipment, testing and control of the complete mixed anaerobic reaction tank wastewater treatment project. Technical requirements for construction and acceptance, operation and maintenance. This standard is applicable to high suspended solids and high concentration organic wastewater treatment projects using fully mixed anaerobic reaction tanks. Environmental impact assessment and environmental engineering design, construction, environmental protection acceptance and technical basis for operation and management after completion.2 Normative referencesThe contents of this standard refer to the terms in the following documents. For undated references, the valid version applies to this standard. GB 3096 Acoustic Environmental Quality Standard GB 12348 industrial enterprise boundary environmental noise standard General rules for safety and health requirements of GB 12801 production process GB 18597 Hazardous Waste Storage Pollution Control Standard GB 18599 General industrial solid waste storage and disposal site pollution control standards GB 50014 Outdoor Drainage Design Code GB 50015 Building Water Supply and Drainage Design Code GB 50016 Building Design Fire Code GB 50040 power plant basic design specification GB 50053 10KV and below substation design specifications GB 50187 General Plan for Design of Industrial Enterprises GB 50204 Concrete Structure Engineering Construction Quality Acceptance Specification GB 50222 Building interior decoration design fire protection 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 500141 Water supply and drainage structures construction and acceptance specifications GB J 87 Industrial Enterprise Noise Control Design Specification GBZ 1 industrial enterprise design hygiene standard GBZ 2 workplace occupational exposure limit CJ 3025 Urban sewage treatment plant sewage sludge discharge standard CJJ 60 Urban Wastewater Treatment Plant Operation, Maintenance and Safety Technical Regulations CJ/T 51 Standard for urban sewage quality inspection methods JGJ 37 General Rules for Civil Building Design HJ/T 91 Surface Water and Wastewater Monitoring Technical Specifications HJ/T 242 environmental protection product technical requirements belt press filter for sludge dewatering HJ/T 279 environmental protection product technical requirements push flow submersible mixer HJ/T 283 environmental protection product technical requirements chamber filter press and plate and frame filter press HJ/T 335 environmental protection product technical requirements sludge concentration belt dewatering machine NY-T 1220 Biogas Engineering Technical Specification NY/T 1220.1 Technical Specifications for Biogas Engineering Part 1. Process Design NY/T 1220.2 Technical Specifications for Biogas Engineering - Part 2. Gas Supply Design SHT 3535 Petrochemical Concrete Pool Construction and Acceptance Specifications 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 definitionsThe following terms and definitions apply to this standard. 3.1 Completely mixed anaerobic reaction tank completely mixed anaerobic reaction tank Refers to the installation of a stirring device in the sewage treatment reaction tank to complete the high-concentration organic wastewater and anaerobic microorganisms An anaerobic wastewater biological treatment unit that is fully mixed to degrade organic contaminants in wastewater and remove suspended solids. 3.2 Complete mixed anaerobic reaction tank wastewater treatment process without sludge reflux Completely mixed anaerobic reaction tank in wastewater treatment without return sludge Refers to high-suspension high-concentration organic wastewater pretreated by grid and primary sedimentation tank, and then treated by fully mixed anaerobic reaction tank. The effluent enters the degassing device and the sedimentation tank and other subsequent treatments, and there is no process of returning the sludge to the fully mixed anaerobic reaction tank. 3.3 Complete mixed anaerobic reaction tank wastewater treatment process with sludge reflux Completely mixed anaerobic reaction tank in wastewater treatment with return sludge Refers to high-suspension high-concentration organic wastewater pretreated by grid and primary sedimentation tank, and then treated by fully mixed anaerobic reaction tank. The effluent enters the deaerator and the sedimentation tank and other subsequent treatments, and the precipitated sludge in the sedimentation tank is partially returned to the fully mixed type. Oxygen reaction cell to increase the biomass of the process. 3.4 normal temperature anaerobic reaction The reaction cell temperature is controlled by an anaerobic reaction at 25 °C to 30 °C. 3.5 medium temperature anaerobic reaction mesophilic anaerobic reaction The reaction cell temperature is controlled by an anaerobic reaction at 35 °C to 40 °C. 3.6 high temperature anaerobic reaction thermophilic anaerobic reaction The reaction cell temperature is controlled by an anaerobic reaction at 45 °C to 55 °C.4 Design water quantity and design water quality4.1 Design water quantity 4.1.1 The designed water volume shall be designed according to the actual sewage flow measured at the total discharge of the plant or industrial park. Test method should be consistent HJ/T 91 regulations. 4.1.2 The change of wastewater flow rate should be measured according to the characteristics of the process, and the flow coefficient of variation should be determined. 4.1.3 When the actual measurement data cannot be obtained, it can be determined by reference to the relevant provisions of the current national industrial water consumption, or The same industry scale is the same as the existing plant drainage data of the process. 4.1.4 Domestic sewage and bathing wastewater in the factory or in the industrial park should directly enter the subsequent aerobic treatment unit. Stain The determination of the amount of water and the amount of bathing water shall comply with the relevant provisions of GB 50015. 4.1.5 Lifting pump house, grid well, grit chamber, and primary settling tank should be calculated according to the highest daily maximum wastewater volume. 4.1.6 The design flow of the fully mixed anaerobic reactor should be designed according to the highest daily average. 4.1.7 Water supply facilities such as pumps and pipelines before and after a fully mixed anaerobic reaction tank shall be designed according to the highest daily maximum wastewater volume. 4.2 Design water quality 4.2.1 Influent water quality should be determined based on actual monitoring data or extensive reference to design operating parameters of similar plants. 4.2.2 The influent water quality can be weighted average of the corresponding flow of the continuous sampling monitoring data for 5 days and 24 hours at the total inlet, or Obtain data in accordance with relevant regulations. 4.2.3 When there is no engineering survey data, the design water quality can be determined by referring to the relevant provisions of GB 50014. 4.2.4 The influent water quality of the fully mixed anaerobic reaction tank should meet the following conditions. a) pH should be 6.5 ~ 7.5; b) The ambient temperature anaerobic reaction temperature should be 25 °C ~ 30 °C, the intermediate temperature anaerobic reaction temperature should be 35 °C ~ 40 °C, high temperature annoyance The oxygen reaction temperature is preferably 45 ° C ~ 55 ° C; c) the nutritional combination ratio (CODCr. NH3-N. P) should be 100 ~ 500. 5. 1; d) the ratio of BOD5/CODCr should be greater than 0.3; e) the concentration of ammonia nitrogen in the influent water should be less than.2000 mg/L; f) the concentration of sulfate in the influent water should be less than 3000 mg/L; g) The concentration of CODCr in the influent water should be greater than 1000 mg/L; h) Strictly control the concentration of heavy metals, cyanides, phenols and other substances into the fully mixed anaerobic reactor. 4.2.5 If the influent water quality does not meet the requirements, appropriate pretreatment measures should be adopted. 4.2.6 Completely mixed anaerobic reaction tank treatment process When the effluent is directly discharged, it should meet the requirements of national and local discharge standards; When discharging into the next-stage treatment system, the water inlet requirements of the next-stage treatment system should be met. 4.3 Pollutant removal rate The pollutant removal rate of the fully mixed anaerobic reaction tank can be referred to Table 1. Table 1 Removal rate of pollutants in a fully mixed anaerobic reactor Pollutant Index Chemical Oxygen Demand (CODCr) 5 Day Biochemical Oxygen Demand (BOD5) Suspended Solids (SS) Removal rate (%) 70～90 60～80 80～905 General requirements5.1 Completely mixed anaerobic reaction tank process is suitable for high suspended solids high concentration organic wastewater treatment project, suitable for including but not Limited to sewage (waste) water treatment in the following industries. animal husbandry, food manufacturing, paper industry, meat processing industry, sugar industry, Fermentation and brewing industry, pharmaceutical industry, textile dyeing and finishing industry, etc. 5.2 The sewage treatment plant (station) using the fully mixed anaerobic reactor process shall comply with the following regulations. a) The choice and overall layout of the sewage treatment plant (station) address should comply with the relevant provisions of GB 50014. General plan design should Meet the relevant provisions of GB 50187. b) The flood control standard of the sewage treatment plant (station) should not be lower than the urban flood control standard and have good drainage conditions. c) The fire protection design of the sewage treatment plant (station) shall comply with the provisions of GB 50016 and GB 50222. d) The storage yard for sludge and drugs deposited in the sewage treatment plant (station) shall comply with the provisions of GB 18597 and GB 18599. e) Exhaust gas, waste water, waste residue, noise and other pollutants generated during the construction and operation of sewage treatment plants (station) The governance and discharge shall comply with the relevant provisions of national environmental protection regulations and standards to prevent secondary pollution. During the operation The biogas produced should be comprehensively utilized, and the biogas safety should comply with the provisions of NY-T 1220. f) The design and construction of the project should adopt effective noise reduction, noise reduction, greening and other measures to reduce noise, noise and vibration control. The design of the system shall comply with the provisions of GB J 87 and GB 50040. The noise inside and outside the equipment room shall comply with GBZ 2 and GB 3096 respectively. The provisions of the factory boundary noise should comply with the provisions of GB 12348. g) occupational health and labor safety should be highly valued during the design, construction and operation of sewage treatment plants (stations). The grid implements the provisions of GBZ 1, GBZ 2 and GB 12801. h) Sewage treatment plants (stations) should consider emergency measures for pollution prevention in abnormal situations such as production accidents. i) The building (structure) shall be provided with the necessary protective railings and appropriate anti-slip measures shall be in accordance with JGJ 37. j) It is advisable to set up the detection and control system according to the requirements of the process operation to realize the automation of operation management. 5.3 Sewage treatment plants (stations) shall install online monitoring systems and treatment facilities in accordance with national or local environmental protection management requirements. Central control system.6 Process design6.1 General requirements 6.1.1 According to the influent water quality, an appropriate pretreatment process should be adopted before the fully mixed anaerobic reaction tank to make the anaerobic anti- The best operating conditions should be achieved within the pool. 6.1.2 Stirring and other measures should be taken to ensure that the flow state in the fully mixed anaerobic reaction tank is completely mixed. 6.1.3 When the quality of industrial wastewater changes greatly with the production process, facilities for regulating water quality and quantity should be set up. 6.1.4 Process design should take into account the effects of water temperature. 6.1.5 The grille shall be provided before the water inlet system. The design of the inlet pump house and the grille shall comply with the relevant provisions of GB 50014. 6.1.6 The number of cells (grid) of each treatment structure shall not be less than 2 (divisions) and shall be designed in parallel. 6.1.7 The reaction cell should be heated to ensure that the fully mixed anaerobic reactor is maintained at the required temperature. 6.2 Process 6.2.1 Sewage treatment plant (station) using a fully mixed anaerobic reaction tank wastewater treatment process without sludge reflux The process flow is shown in Figure 1. Pre-processed fully mixed Anaerobic reaction cell Influent Biogas purification and utilization Sludge treatment Water Degasser sedimentation tank Fig.1 Process flow of complete mixed anaerobic reaction tank wastewater without sludge reflux 6.2.2 Sewage treatment plant (station) using a fully mixed anaerobic reaction tank wastewater treatment process with sludge reflux The process flow is shown in Figure 2. Pre-processed fully mixed Anaerobic reaction cell Influent Biogas purification and utilization Sludge treatment Degasser Water Sludge backflow Sedimentation tank Figure 2 Process flow of complete mixed anaerobic reaction tank wastewater with sludge reflux 6.3 Pretreatment 6.3.1 Pretreatment of the complete mixed anaerobic reaction tank wastewater treatment process includes grid, grit chamber, primary settling tank, regulating tank and Mix heating pools or cooling facilities. Mixed Hot pool or Cooling Tower Enter complete mixing Anaerobic reaction cell pH, temperature regulation, nutrient salt dosing Legend. Recommended process unit optional process unit Figure 3 Pretreatment process 6.3.2 Thick and fine grids should be provided as needed. The design of the grille shall comply with the provisions of GB 50014. 6.3.3 A grit chamber should be provided. The design of the grit chamber should comply with the provisions of GB 50014. 6.3.4 The primary sinking tank should be set. The design of the primary sedimentation tank shall comply with the provisions of GB 50014. 6.3.5 The adjustment pool should be set. The design of the conditioning tank should meet the following requirements. a) The capacity of the adjustment tank should be determined according to the curve of the sewage flow; when there is no flow curve, the capacity of the adjustment tank should be full. For the requirement of homogenization of water quality and quantity in the production drainage cycle, the residence time should be 8 h to 12 h; if it is intermittent operation, adjust the tank capacity. The amount should be set in 1~2 cycles; b) It is advisable to set up a nutrient salt replenishing device in the adjustment tank, which can also be used as a neutralization tank; c) The mixing facility should be set in the adjustment tank, and the mixer power should be 4 W/m3 to 8 W/m3; d) The slag removal device shall be installed at the outlet end of the adjustment tank, and the sand removal and sludge discharge device shall be installed at the bottom of the tank. 6.3.6 The pH adjustment and nutrient salt dosing device should be located in the dosing room and should be designed to meet the following requirements. a) Adjust and control the pH in the fully mixed anaerobic reaction tank by adding alkaline or acidic substances, alkaline substances Na2CO3, NaHCO3, NaOH, etc. may be used; hydrochloric acid, sulfuric acid, etc. may be selected for the acidic substance; b) The pharmacy should have a certain amount of storage, the storage of acidic substances should be more than 7 days, and the storage of alkaline substances should be 15 days. on; c) It is advisable to use a special solvent-dissolving tank and mixing equipment for the dissolution of the drug, and the metering pump should be used for automatic quantitative dosing; d) It is advisable to first add acidic or alkaline substances to the conditioning tank for coarse pH adjustment, and then use a pipe mixer and quantitative Acid and alkali pump for fine adjustment of pH; e) It is advisable to set up a drug dissolving and dosing device such as nutrient salt (nitrogen, phosphorus, etc.) in the dosing room. 6.3.7 If the temperature of the wastewater does not meet the design temperature requirements, a heating or cooling device shall be provided. 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