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HJ 2030-2013

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HJ 2030-2013English579 Add to Cart Days<=4 Technical specifications for monosodium glutamate industry wastewater treatment Valid HJ 2030-2013
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Detail Information of HJ 2030-2013; HJ2030-2013
Description (Translated English): Technical specifications for monosodium glutamate industry wastewater treatment
Sector / Industry: Environmental Protection Industry Standard
Classification of Chinese Standard: Z23
Classification of International Standard: 13.030.20
Word Count Estimation: 22,280
Quoted Standard: GB 3096; GB 4284; GB 12348; GB 12801; GB 14554; GB 18599; GB 19431; GB 50009; GB 50014; GB 50015; GB 50016; GB 50019; GB 50033; GB 50046; GB 50052; GB 50054; GB 50069; GB 50093; GB 50108; GB 50168; GB 50169; GB 50187; GB 50191; GB 50194; GB 50204; GB 5020
Drafting Organization: Chinese Society for Environmental Sciences
Regulation (derived from): Department of Environmental Protection Notice No. 18 of 2013
Summary: The standard provides: MSG industrial wastewater treatment project design, construction, commissioning and operation technical requirements. This standard applies to: monosodium glutamate industrial wastewater treatment works, to evaluate the design and c

HJ 2030-2013
Technical specifications for monosodium glutamate industry wastewater treatment
National Environmental Protection Standard of the People's Republic
MSG industrial wastewater treatment engineering technical specification
Technical specifications for monosodium glutamate industry wastewater
Treatment
Published on.2013-3-29
2013-7-1 implementation
Ministry of Environmental Protection released
Content
Foreword I
1 Scope.1
2 Normative references.1
3 Terms and Definitions 3
4 Contaminants and pollution loads 4
5 General requirements.6
6 Process Design.7
7 Main process equipment and materials 13
8 Detection and Process Control..14
9 Major auxiliary works 15
10 Labor Safety and Occupational Health.16
11 Construction and acceptance 16
12 Operation and maintenance..17
Foreword
To implement the Law of the People's Republic of China on Water Pollution Prevention and Control, and regulate the construction and operation management of the MSG industrial wastewater treatment project,
This standard is formulated to prevent environmental pollution, protect the environment and human health.
This standard specifies the technical requirements for the design, construction, acceptance, operation and maintenance of the MSG industrial wastewater treatment engineering system.
This standard is a guidance document.
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 Science Society, Beijing Technology and Business University, Shandong Shifang Environmental Energy Co., Ltd.
Henan Lianhua MSG Co., Ltd.
This standard was approved by the Ministry of Environmental Protection on March 29,.2013.
This standard has been implemented since July 1,.2013.
This standard is explained by the Ministry of Environmental Protection.
MSG industrial wastewater treatment engineering technical specification
1 Scope of application
This standard specifies the technical requirements for the design, construction, acceptance and operation of MSG industrial wastewater treatment engineering.
This standard applies to the MSG industrial wastewater treatment project, and can be used as an environmental impact assessment and environmental protection facility for the MSG industrial construction project.
Technical basis for design, construction, construction project completion environmental protection acceptance and operation and management after 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 3096 Acoustic Environmental Quality Standard
GB 4284 Contaminant control standard for agricultural sludge
GB 12348 Environmental noise emission standards for industrial enterprises
General rules for safety and health requirements of GB 12801 production process
GB 14554 Odor Pollutant Discharge Standard
GB 18599 General industrial solid waste storage and disposal site pollution control standards
GB 19431 MSG industrial pollutant discharge standard
GB 50009 Building Structure Load Specification
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 50033 Architectural lighting design standard
GB 50046 industrial building anti-corrosion design specification
GB 50052 design specification for power distribution system
GB 50054 Low Voltage Distribution Design Specification
GB 50069 Water supply and drainage engineering structure design specification
GB 50093 automation instrument engineering construction and acceptance specification
GB 50108 Underground Engineering Waterproof Technical Specifications
GB 50168 Electrical installation engineering cable line construction and acceptance specifications
GB 50169 Electrical installation engineering grounding device construction and acceptance specifications
GB 50187 General Plan for Design of Industrial Enterprises
GB 50191 seismic design code for structures
GB 50194 Construction site safety requirements for construction and supply of electricity
GB 50204 Concrete Structure Engineering Construction Quality Acceptance Specification
GB 50208 Underground Waterproof Engineering Quality Acceptance Specification
General specification for construction and acceptance of GB 50231 mechanical equipment installation engineering
GB 50236 Field equipment, industrial pipeline welding engineering construction and acceptance specifications
GB 50243 Ventilation and air conditioning engineering quality acceptance specification
GB 50254 Electrical installation engineering low-voltage electrical construction and acceptance specifications
GB 50257 Electrical installation engineering explosion and fire hazard environment electrical installation construction and acceptance specifications
GB 50268 Water supply and drainage pipeline engineering construction and acceptance specifications
GB 50275 Compressor, fan, pump installation engineering construction and acceptance specifications
GB 50303 Building electrical engineering construction quality acceptance specification
GB 50334 Urban Wastewater Treatment Plant Engineering Quality Acceptance Specification
GB J 87 Industrial Enterprise Noise Control Design Specification
GB J 141 Code for construction and acceptance of water supply and drainage structures
GB/T 15562.1 Environmental protection graphic mark discharge port (source)
GB/T 18920 Urban Wastewater Recycling Urban Miscellaneous Water Quality
GB/T.19923 Urban sewage recycling industrial water quality
GB/T 50335 Wastewater Recycling Engineering Design Specification
Design code for CECS 97 blast aeration system
Design code for CECS 111 sewage activated sludge treatment in cold regions
Construction and acceptance procedures for CECS 162 water supply and drainage instrument automation control engineering
CJJ 60 Urban Wastewater Treatment Plant Operation, Maintenance and Safety Technical Regulations
HJ/T 15 Environmental Protection Product Technical Requirements Ultrasonic Open Channel Sewage Flowmeter
HJ/T 91 Surface Water and Wastewater Monitoring Technical Specifications
HJ/T 92 Water pollution discharge total monitoring technical specification
HJ/T 96 pH water quality automatic analyzer technical requirements
HJ/T 101 Ammonia Nitrogen Water Quality Analyzer Technical Requirements
HJ/T 212 pollution source online automatic monitoring (monitoring) system data transmission standard
HJ/T 242 environmental protection product technical requirements belt press filter for sludge dewatering
HJ/T 251 environmental protection product technical requirements Roots blower
HJ/T 252 environmental protection product technical requirements, microporous aerator
HJ/T 262 environmental protection product technical requirements grille decontamination machine
HJ/T 265 environmental protection product technical requirements scraper
HJ/T 266 environmental protection product technical requirements suction machine
HJ/T 278 environmental protection product technical requirements single-stage high-speed aeration centrifugal blower
HJ/T 279 Environmental Protection Products Technical Requirements Diving Pushing 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
HJ/T 336 Environmental Protection Product Technical Requirements Submersible Sewage Pump
HJ/T 354 Environmental Protection Products Technical Requirements Water Pollution Source Online Monitoring System Acceptance Technical Specification (Trial)
HJ/T 355 Technical Requirements for Environmental Protection Products Technical Specifications for Operation and Assessment of Online Monitoring System for Water Pollution Sources (Trial)
HJ/T 369 Environmental Protection Product Technical Requirements Dosing Device for Water Treatment
HJ/T 377 Environmental Protection Products Technical Requirements Chemical Oxygen Demand (CODCr) Water Quality Online Automatic Monitor
HJ 444 Cleaner Production Standard MSG Industry
HJ 576 Anaerobic-anoxic-aerobic activated sludge process wastewater treatment engineering technical specification
HJ 577 Sequencing Batch Activated Sludge Wastewater Treatment Engineering Technical Specification
HJ 578 Oxidation Ditch Activated Sludge Wastewater Treatment Engineering Technical Specification
HJ 579 Membrane Separation Wastewater Treatment Engineering Technical Specification
HJ .2006 Technical Specifications for Sewage Coagulation and Flocculation Treatment Engineering
HJ .2008 sewage filtration treatment engineering technical specification
HJ .2009 Biological Contact Oxidation Wastewater Treatment Engineering Technical Specification
HJ .2013 Upflow Anaerobic Sludge Bed Reactor Wastewater Treatment Engineering Technical Specification
NY/T 1220.2 Technical Specifications for Biogas Engineering Part II. Gas Supply Design
NY/T 1222 Large-scale livestock and poultry farm biogas engineering design specification
“Construction and Acceptance Measures for Construction Projects (Engineering)”, Construction [1990] No. 1215
Measures for the Administration of Environmental Protection Acceptance for Completion of Construction Projects.2001 Order No. 13 of the State Environmental Protection Administration
"Administrative Measures for Automatic Monitoring of Pollution Sources".2005 State Environmental Protection Administration Order No. 28
Regulations on the Safety Management of Dangerous Chemicals, State Council Order No. 591,.2011
Technical Requirements for Standardized Remediation of Sewage Discharges (Trial) Environmental Supervision [1996] No. 470
3 Terms and definitions
The terms and definitions defined in GB 19431 and HJ 444 and the following terms and definitions apply to this standard.
3.1 MSG monosodium glutamate
MSG, also known as sodium glutamate, chemical name. L-glutamic acid monosodium monohydrate (or L-α-aminoglutarate monosodium monohydrate),
Molecular formula. C5H8NO4Na·H2O.
3.2 MSG industrial monosodium glutamate industry
It refers to the industry that produces starchy products by the processes of microbial fermentation, extraction and crystallization, using starch, sugar and the like as raw materials. Industrial enterprises
The industry includes fermentation of glutamic acid (commonly known as glutamic acid) from starch, saccharide and other raw materials, and then refined by glutamic acid to produce the whole process of MSG.
Industry; also includes the production of glutamic acid only from starch, saccharide and other raw materials; also includes the production of monosodium glutamate only from glutamic acid.
enterprise.
3.3 Concentrated isoelectric process and separation tail condense technique at isoelectric point and waste
Isolated fermentation liquor
The concentrated isoelectric process refers to the process of extracting glutamic acid by continuous isoelectric separation after the yeast liquid is concentrated to a certain concentration of glutamic acid.
Cheng. The waste liquid after the yeast extract is concentrated and separated into glutamic acid is called a separation tail liquid.
3.4 Ionization technique and ion exchange technique at isoelectric point and waste
Fermenting liquor from ion exchange process
The iso-ionization process refers to a process in which the yeast solution is subjected to isoelectric extraction of glutamic acid and then subjected to ion exchange for secondary separation of glutamic acid.
The effluent after ion exchange separation of glutamic acid is called the separation tail liquid.
3.5 starch wastewater wastewater from starch production
It refers to the various wastewater produced by the MSG production enterprises using corn and wheat to process starch.
3.6 glutamic acid wastewater wastewater from glutamate production
Means that the starch is produced by the process of sugar production, fermentation, separation and extraction of glutamic acid, including saccharification tanks, fermenters, extraction tanks,
When the separator, the washing water of the filter cloth, and the isoelectric separation process are used, the ion exchange column needs to be rinsed to regenerate the resin washing water produced by the regeneration.
3.7 sugar wastewater from sugar production
It refers to the wastewater generated during the process of preparing glucose by liquefaction, saccharification, concentration and filtration, including washing water of saccharification tank and filter cloth.
3.8 refined wastewater from monosodium glutamate production
It refers to the wastewater produced by the process of refining glutamic acid by neutralization, decolorization, crystallization, etc., mainly for the washing wastewater of granular carbon column during decolorization.
3.9 condensed water condensation wastewater
Refers to the secondary steam condensate entering the sewage treatment system during the concentration process such as yeast liquid, separation tail liquid and separation tail liquid.
3.10 integrated wastewater integrated wastewater
Refers to the wastewater from the mixing of various wastewaters discharged by the MSG production enterprise into the wastewater treatment project, mainly including glutamic acid wastewater and refined wastewater.
Sewage condensate, starch wastewater pretreatment (anaerobic process) effluent and plant domestic sewage.
3.11 pretreatment classification treatment
Refers to the anaerobic treatment of starch wastewater with high organic pollutant content and the recycling of resources in order to reduce the comprehensive wastewater treatment load.
Cheng.
3.12 primary treatment
Refers to the primary treatment process based on measures such as homogenization adjustment in the comprehensive wastewater treatment project.
3.13 secondary treatment
Refers to the purification process with secondary biochemical treatment as the main body after the primary treatment in the comprehensive wastewater treatment project.
3.14 tertiary treatment
Refers to measures such as coagulation sedimentation and filtration in the comprehensive wastewater treatment project to further remove pollutants that cannot be completely removed by secondary treatment.
Purification process.
4 Contaminants and pollution loads
4.1 Wastewater sources and pollutants
4.1.1 The production wastewater of MSG enterprises mainly includes glutamic acid wastewater, refined wastewater and sewage condensed water, and MSG enterprises containing starch production also
Including starch wastewater.
4.1.2 The main pollutants in the production of wastewater from MSG enterprises are chemical oxygen demand (CODCr), biochemical oxygen demand (BOD5), and ammonia nitrogen (NH3-N).
And total nitrogen (TN).
4.2 Wastewater volume
4.2.1 The amount of wastewater should be determined by the actual measurement of the total amount of wastewater discharged from the total discharge of the plant wastewater, and each of the production processes
The wastewater of the process should be measured one by one, and the discharge of wastewater should meet the requirements of HJ/T 91.
4.2.2 The amount of wastewater can be determined analogously to the emission data of the same production scale, the same raw materials and products, and the same production process of MSG.
4.2.3 When estimating the water withdrawal amount of the whole plant, the amount of wastewater should be 90% ∼ 95% of the total water withdrawal.
4.2.4 When there is no measured and analog data, the amount of wastewater can be calculated according to Table 1 as follows.
.(1)
.(2)
In the formula.
Q--combined wastewater volume (m3/d);
Qi--the amount of wastewater produced (m3/d);
Qj--Other wastewater volume (m3/d), including ground flushing water and domestic sewage, should be determined according to GB 50015 and other standards;
Qi--The amount of wastewater produced per unit of product (m3/t product) can be determined by referring to Table 1;
mi--MSG product production (t product/d), should be determined according to the company's production scale and product plan.
Table 1 Typical MSG production volume per unit of product
Wastewater production per unit product product (m3/t)
Glutamic acid corn, wheat, rice 20∼50 starch, molasses 20∼35
MSG
Corn, wheat, rice 20∼50
Starch, molasses 20∼35
Glutamic acid 6∼10
Note. 1.1t glutamic acid can produce 1.23 t∼1.26 t MSG;
Note 2. The high value is taken by the equal ionization process, and the concentrated isoelectric process takes the medium and low values.
4.2.5 The design water quantity should consider a certain margin, and the design margin should be less than or equal to 20% of the wastewater volume.
4.3 Wastewater quality
4.3.1 Wastewater quality should be sampled and tested in the comprehensive wastewater discharge port of the factory, and various process wastewaters discharged from each production process
The quality should be sampled and tested one by one, and the water quality sampling test should meet the requirements of HJ/T 91.
4.3.2 The quality of wastewater can be determined by comparing the emission data of the same production scale, the same raw materials and products, and the same production process of MSG.
4.3.3 When there is no actual measurement and analogy data, the water quality of the MSG industrial production process can be referred to Table 2, the mixing of different products and different raw materials.
The wastewater quality is determined by the mixing ratio of different wastewater types.
Table 2 Typical MSG production wastewater quality
Unit. mg/L
Wastewater type pH
Cod
CODCr
Biochemical oxygen demand
BOD5
Ammonia nitrogen NH3-N total nitrogen TN SS total phosphorus TP
Starch wastewater 3.5∼6 9000∼15000 5000∼8000 60∼230 300∼500 800∼1500 -
Glutamic acid wastewater 2 3∼7.5 5000∼9000 3000∼6000 400∼1700 500∼2000 800∼1500 -
Refined wastewater 8∼11 700∼1200 300∼700 80∼150 100∼200.200∼600 -
Sewage Condensate 4.5∼7.0 1200∼1600 600∼800 70∼250 70∼250 1 -
Comprehensive wastewater 2 4.3∼7.5 750∼2000 400∼1200 150∼400 150∼500.200∼800 10-50
Note. 1 is a low value and is generally not used as a monitoring indicator.
2 using glutamic acid wastewater and integrated wastewater with equal ionization process, the pH value is taken at medium and low values, and other water quality indicators are taken at medium and high values;
The glutamic acid wastewater and the comprehensive wastewater have a high pH value, and other water quality indicators take the medium and low values.
5 General requirements
5.1 General provisions
5.1.1 MSG production enterprises shall adopt clean production technology in accordance with the requirements of HJ 444 to improve resource and energy utilization and reduce wastewater pollution.
Dyeing load.
5.1.2 The construction of MSG industrial wastewater treatment project should meet the requirements of the environmental impact assessment approval document, follow the “three simultaneous” system, and
Based on the production situation and overall planning of the enterprise, we will coordinate the wastewater treatment and centralized treatment, existing projects and new (expansion and transformation) construction projects.
Relationship.
5.1.3 The drainage system of the plant area shall adopt the system of rain and sewage diversion, which is located in areas with high water protection requirements or environmentally sensitive areas.
The initial rainwater in a larger area is intercepted, regulated and treated.
5.1.4 The separation tail liquid and the separation tail liquid produced by the fermentation and extraction process shall be comprehensively utilized and shall not be directly discharged into the wastewater treatment system.
5.1.5 The wastewater treated by the MSG industrial wastewater treatment project should be comprehensively utilized. Water quality for other industrial water and environmental cleaning
According to the recycling and utilization, refer to GB/T.19923 and GB/T 18920.
5.1.6 The discharge water quality and quantity of MSG industrial wastewater treatment project shall meet the requirements of GB 19431 and local standards.
5.1.7 Measures for prevention and control of secondary pollution shall be taken during the construction and operation of MSG industrial wastewater treatment project. Odor and solid waste treatment
Disposal shall comply with the provisions of GB 14554 and GB 18599 respectively.
5.1.8 The noise of the MSG industrial wastewater treatment project shall comply with the provisions of GB 3096 and GB 12348, and the noise source for the internal facilities of the building.
Control shall comply with the relevant provisions of GB J 87.
5.1.9 The wastewater discharge port shall be constructed in accordance with the Technical Requirements for Standardization and Remediation of Sewage Discharge Ports (Trial). The setting of the wastewater discharge port mark should be
In accordance with the requirements of GB/T 15562.1, and install continuous monitoring equipment for pollutant discharge in accordance with the “Measures for Automatic Monitoring of Pollution Sources”.
5.1.10 The online monitoring system for water pollution sources shall be monitored in accordance with HJ/T 15, HJ/T 96, HJ/T 101, HJ/T 377 and other standards.
Instrumentation, operation and data transfer shall be performed in accordance with HJ/T 355 and HJ/T 212.
5.2 Construction scale
5.2.1 The scale of construction should be comprehensively determined according to the amount of wastewater, water quality and expected changes. The wastewater treatment project of existing enterprises should be measured.
Based on the data, the wastewater treatment project of the new (expanded or modified) enterprise should be based on the types of raw materials, product categories, and production processes.
Degree and usage, determined by analogy or material balance.
5.2.2 The scale of construction of MSG industrial wastewater treatment project should meet the following requirements.
a) The wastewater treatment structure before the regulating tank such as the grating channel and the collecting well is calculated according to the maximum daily maximum flow rate;
b) The wastewater treatment structure such as the adjustment pool and the subsequent biochemical pool and secondary sedimentation tank are calculated according to the maximum daily average flow rate;
c) Sludge treatment and disposal works should be calculated according to the maximum daily average sludge volume.
5.3 Engineering composition
5.3.1 MSG industrial wastewater treatment project consists of main engineering, auxiliary engineering and production management facilities.
5.3.2 The main works mainly include wastewater pretreatment engineering, comprehensive wastewater treatment engineering, sludge treatment and disposal engineering, and biogas utilization engineering.
And malodor treatment works.
a) Wastewater pretreatment engineering includes starch wastewater pretreatment (anaerobic process) engineering;
b) Integrated wastewater treatment projects include primary, secondary and tertiary treatment systems for wastewater;
c) Sludge treatment and disposal projects include sludge reduction treatment and final disposal systems;
d) biogas utilization projects include biogas purification, storage and utilization systems;
e) The malodor treatment project includes an odor collection and treatment system.
5.3.3 Auxiliary works include electrical, water supply and drainage and fire protection, heating, ventilation and air conditioning.
5.3.4 Production management facilities include office buildings, duty rooms, etc.
5.4 Site selection
5.4.1 The site selection of the MSG wastewater treatment project should be included in the construction plan of the MSG industrial production enterprise and meet the environmental impact assessment approval document.
Requirements.
5.5 General layout
5.5.1 The general layout should comply with the relevant provisions of GB 50014, GB 50187 and other standards, and meet the environmental impact assessment approval documents.
Claim.
5.5.2 The overall layout of the wastewater treatment project shall be based on the functions and treatment process requirements of each structure, combined with topography, climate and geological conditions.
Determined after technical and economic comparison.
5.5.3 The general layout should be reasonable and compact, meet the construction, maintenance and management requirements, and leave room for development and equipment replacement.
5.5.4 Vertical layout should make full use of the original terrain and height difference, as far as possible to achieve earthwork balance, gravity discharge, and reduce energy consumption.
5.5.5 Buildings with large transportation capacity such as dosing room and sludge treatment room should be close to the road and away from the areas where people often enter and exit.
5.5.6 Facilities requiring fire and explosion protection, such as biogas utilization projects, should be placed in relatively independent areas and consider adequate protection distances.
5.5.7 The out-of-pipe and maintenance venting facilities should be properly arranged and the unqualified venting water or sludge should be properly disposed and disposed of.
5.5.8 When the wastewater treatment project is constructed in phases, the area of the wastewater treatment project should be reserved according to the overall treatment scale, and the overall
Arrangement, pipe network and underground structures should be completed at one time.
6 Process design
6.1 General requirements
6.1.1 Before the process design, comprehensively investigate the wastewater quality, quantity and variation, and conduct necessary analysis and testing.
6.1.2 The treatment technology with mature technology, high processing efficiency, energy conservation and investment should be selected to ensure stable and reliable wastewater treatment engineering.
safe operation.
6.1.3 The biochemical treatment unit should be designed in two parallel series.
6.2 Wastewater reduction technical requirements
6.2.1 The MSG production system should use measures such as cooling water and flushing water recycling to reduce wastewater and pollutant emissions.
6.2.2 Separation of tail liquid and separation tail liquids should be carried out by means of flocculation air flotation and evaporation and concentration techniques to reduce pollutants in wastewater.
The amount of emissions.
6.2.3 The initial high-concentration resin washing water produced by the iso-ionization process should be comprehensively utilized.
6.3 Routing options
6.3.1 The process flow of MSG industrial wastewater treatment is shown in Figure 1.
Figure 1 Flow chart of MSG industrial wastewater treatment process
6.3.2 Starch wastewater from starch-producing MSG enterprises should be given priority to comprehensive utilization, and the discharged starch wastewater should be mixed with sugar-making wastewater.
After the pretreatment with anaerobic as the main process, the effluent is mixed with other wastewater into the integrated wastewater treatment system.
6.3.3 The secondary treatment process shall adopt a biological treatment process with denitrification function and consider its biological phosphorus removal function.
6.3.4 Integrated wastewater treatment should be determined according to current national and local pollutant discharge standards, sources and properties of pollutants, and drainage directions.
The processing depth of the project, select the corresponding processing technology, and determine the technical and economic comparison.
6.3.5 Wastewater treatment efficiency should be obtained through test or analog data. Refer to Table 3 when no data is available.
Table 3 Typical wastewater treatment process unit treatment efficiency
Processing level processing method main process
Processing efficiency /%
CODCr BOD5 NH3-N SS
Pretreatment anaerobic biochemical IC, UASB 80∼90 90∼95 - 30∼50
First-grade water quality adjustment grille, adjustment tank, pH adjustment - - - -
Secondary biochemical denitrification A/O process, ASND process 75∼90 85∼95 >90 80∼90
Deodorant starch wastewater pretreatment
Primary treatment
Factory sewage
Discharge
Secondary treatment
Three-stage treatment to achieve standard discharge
Sludge treatment sludge disposal
Wastewater treatment sludge treatment
Accident discharge wastewater accident pool
Stench treatment
Deodorization
Glutamate wastewater
Refined wastewater
Sewage condensate
Processing level processing method main process
Processing efficiency /%
CODCr BOD5 NH3-N SS
Third level
Coagulation sedimentation coagulation sedimentation 40∼50 - - 70~90
Filter coagulation sedimentation and filter 40∼50 - - 80~90
6.4 Process design requirements
6.4.1 Pretreatment of starch wastewater
6.4.1.1 Process design requirements for starch wastewater pretreatment can refer to starch industrial wastewater treatment workers that produce starch from corn and wheat.
Relevant requirements for anaerobic treatment units in the technical specifications.
6.4.1.2 Pretreatment of starch wastewater should adopt anaerobic treatment process. The main process includes grid, lifting pump room and regulating tank.
(pH and water temperature adjustment) and anaerobic treatment unit.
6.4.1.3 The process design requirements for the grid and lift pump room are given in 6.4.2.2 and 6.4.2.3.
6.4.1.4 The residence time of the conditioning tank used for pretreatment of corn and wheat starch wastewater shall not be less than 8 h. See 6.4.2.4 for process design requirements.
6.4.1.5 Starch production wastewater should be equipped with pH adjustment facilities. See 6.4.2.5 for process design requirements.
6.4.1.6 Starch production wastewater should be equipped with temperature regulation facilities and meet the following requirements.
a) Wastewater heating can be heated outside the pool or heated in the tank. Heating outside the tank can be done by heat exchanger and hot water circulation.
Heating should be carried out by hot water circulation heating;
b) Heat exchanger selection should be based on wastewater characteristics, medium temperature and heat exchange temperature. Heat exchanger heat exchange area should be based on heat
Balance calculations and leave a margin of 10% to 20%.
6.4.1.7 Anaerobic treatment unit can adopt internal circulation anaerobic reactor (IC), upflow anaerobic sludge blanket (UASB) and other processes.
Requirements are as follows.
a) When IC is selected, the volumetric load should be 10 kg COD/(m3·d)~25 kg COD/(m3·d), and the sludge concentration should be 20 g/L~40.
g/L, the hydraulic retention time should be 6 h~12 h. When UASB is selected, the volumetric load should be 5 kg COD/(m3·d)~10 kg.
COD/(m3·d), the sludge concentration should be 10 g/L~20 g/L, and the hydraulic retention time should be 12 h~20 h;
b) The height of the IC reactor should not exceed 25 m, the volume of the single seat should not exceed 1500 m3, and the effective height of the UASB is generally 5 m~7.
m, should not exceed 10 m, the volume of a single seat should not exceed.2000 m3;
c) The pH of anaerobic influent should be 6.5∼7.5, the ratio of CODCr/SO42- should be not less than 10, and the content of suspended solids should be less than 1500.
Mg/L;.
Related standard:   HJ 2036-2013  HJ 2021-2012
   
 
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