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BASIC DATA
Standard ID HJ 2047-2015 (HJ2047-2015)
Description (Translated English) Technical specifications for hydrolysis and acidification reactor in wastewater treatment
Sector / Industry Environmental Protection Industry Standard
Classification of Chinese Standard Z23
Word Count Estimation 16,199
Date of Issue 2015-11-20
Date of Implementation 2016-01-01
Regulation (derived from) Ministry of Environment Announcement 2015 No.74

Standards related to: HJ 2047-2015

HJ 2047-2015
Technical specifications for hydrolysis and acidification reactor in wastewater treatment
National Environmental Protection Standard of the People 's Republic of China
Technical specification for wastewater treatment of hydrolytic acidification reactor
Technical specifications for hydrolysis and acidification reactors
In wastewater treatment
2015-11-20 release
2016-1-1 implementation
Ministry of Environmental Protection released
Directory
Preface ..II
1 Scope of application
2 normative reference documents
3 Terms and definitions 2
Design water and design water quality
5 General requirements .4
6 process design .4
7 Major process equipment and materials
8 detection and process control
Major auxiliary works
10 Labor safety and occupational health
11 construction and acceptance
12 operation and maintenance
Preface
In order to implement the Environmental Protection Law of the People's Republic of China and the Law of the People's Republic of China on the Prevention and Control of Water Pollution,
Acidification reactor construction and operation management, prevention and control of environmental pollution, environmental protection and human health, the development of this standard.
This standard specifies the process design, main process equipment and materials for the hydrolysis and acidification reactor wastewater treatment works.
Process control, construction and acceptance, operation and maintenance of technical requirements.
This standard is a guiding standard.
This standard is the first release.
This standard is organized by the Ministry of Environmental Protection Science and Technology Standards Division.
The main drafting unit of this standard. China Environmental Protection Industry Association, Tsinghua University, Beijing Environmental Protection Science Research Institute.
The Environmental Protection Department of this standard approves on November 20,.2015.
This standard has been implemented since January 1,.2016.
This standard is explained by the Ministry of Environmental Protection.
Technical specification for wastewater treatment of hydrolytic acidification reactor
1 Scope of application
This standard specifies the process design, inspection and process control, construction and acceptance, operation and maintenance of the hydrolysis and acidification reactor
And other technical requirements.
This standard applies to the use of hydrolytic acidification reactor sewage treatment works, can be used as environmental impact assessment, environmental engineering construction
Facilities, environmental protection and acceptance of post-construction and management of the technical basis.
2 normative reference documents
The contents of this standard refer to the terms of the following documents. For undated references, the latest edition of this document applies
standard.
Electrical equipment for explosive gas atmospheres GB 3836
General rules for safety and hygiene of production processes
Standard for Hazardous Waste Storage Pollution Control
Standard for Pollution Control of Storage and Disposal Site for General Industrial Solid Waste
Specification for Seismic Design of Buildings GB 50011
Code for design of outdoor drainage
Code for design of building water supply and drainage
Code for fire protection of building design GB 50016
Code for design of heating, ventilation and air conditioning GB 50019
Code for design of building floor GB 50037
Code for design of corrosion protection for industrial buildings GB 50046
Code for design of power distribution system for GB 50052
Code for design of lightning protection for buildings GB 50057
Code for structural design of water supply and drainage works of GB 50069
Technical code for waterproofing of underground engineering GB 50108
Code for construction and acceptance of water supply and drainage structures GB 50141
Code for construction and acceptance of concrete structures GB 50204
Code for acceptance of construction quality of steel structure engineering GB 50205
Code for construction and acceptance of building anti - corrosion engineering GB 50212
Code for fire protection in interior decoration design of buildings GB 50222
General specification for construction and acceptance of mechanical equipment installation works GB 50231
Code for construction and acceptance of water supply and sewerage in GB 50268
Specification for Construction and Acceptance of Compressor, Fan, Pump Installation
Standard for Designing Hygienic Standards for Industrial Enterprises
Occupational exposure limits for workplace hazards
Standard for Examination Method of Municipal Wastewater Quality
Technical Code for Operation, Maintenance and Safety of Municipal Wastewater Treatment Plant
Technical specification for preservation and management of water quality samples
Technical specification for sewage treatment engineering of HJ .2014 biological filter
Technical specification for surface water and wastewater monitoring
Technical requirements for environmental protection products - Belt press filters for sludge dewatering
HJ/T 245 Environmental protection products - Technical requirements - Suspension packing
Technical requirements for environmental protection products for HJ/T 250 Rotary fine grids
Technical requirements for environmental protection products
HJ/T 283 Environmental protection products Technical requirements Van filter press and plate and frame filter press
HJ/T 335 environmental protection products technical requirements sludge concentration belt dehydration machine
HJ/T 336 Environmental protection products Technical requirements Diving sewage pump
Technical requirements for environmental protection products - Dosing devices for water treatment
"Construction project (project) completion and acceptance method" (construction construction [1990] 1215)
Measures for the Administration of Acceptance of Environmental Protection for Completion of Construction Projects (State Environmental Protection Administration Decree No. 13)
3 terms and definitions
The following terms and definitions apply to this standard.
3.1 hydrolysis and acidification reactor
Refers to the anaerobic biological reaction control in the hydrolysis and acidification stage, the use of anaerobic or facultative bacteria in the hydrolysis and acidification stage
(Including carbohydrates, fats and lipids, etc.) in the presence of suspended organic solids and biodegradable organisms in the effluent,
Hydrolyzed into dissolved organic matter and biodegradable small molecules, small molecules of organic matter and then under the action of acid bacteria into a swing
Fatty acid wastewater treatment plant.
Up-flow hydrolysis acidification reactor
In a single reactor, the effluent from the bottom of the reactor is uniformly passed from the bottom of the reactor through the sludge layer (average sludge
Concentration of 15g/L ~ 25g/L) rose to the top of the reactor to achieve the process of hydrolysis and acidification, removal of suspended solids and other functions of hydrolysis
Acidification reactor.
3.3 hybrid hydrolysis acidification reactor mixed hydrolysis acidification reactor
A hydrolytic acidification reactor is added to the sludge bed of the upflow hydrolytic acidification reactor.
3.4 complete mixed hydrolysis acidification reactor completely mixed hydrolysis acid
Reactor
The reactor is equipped with a stirring device to completely separate the sewage from the sludge to achieve the hydrolysis and acidification of the reactor, generally followed by precipitation
The pool separates the sewage, sludge and returns the sludge to the hydrolysis acidification reactor.
4 Design water and design water quality
4.1 Design water
4.1.1 Design water should be determined based on the actual measured effluent flow. The test method shall comply with the requirements of HJ/T 91.
4.1.2 urban sewage can not obtain the measured data, the design of water can be based on local water quota, combined with local drainage facilities water
The rate of flat drainage is determined by 80% to 90% of the local water use quota.
4.1.3 industrial wastewater can not obtain the measured data, the design of water can refer to the current industrial water consumption of the relevant provisions of the conversion to determine,
Or according to the same industry with the scale of the existing drainage data to determine the actual ratio.
4.1.4 Industrial Park Concentrated sewage treatment project design flow can refer to the urban sewage design flow to determine the implementation of the method.
4.1.5 industrial wastewater and domestic sewage mixed treatment, the factory or industrial park within the amount of sewage, bathing sewage
OK, should comply with the relevant provisions of GB 50015.
4.1.6 In the shunt system, the flow rate of the hydrolytic acidification reactor shall be determined according to the maximum daily average;
Drainage system, the hydrolysis of acidification reactor should be designed according to the flow of sewage flow, and with the confluence of sewage design flow check, check the sink
Lake time should not be less than 30min. Process set in the adjustment pool and the residence time is greater than 8h, hydrolytic acidification reactor design flow can be
According to the average daily average.
4.1.7 Hydrolysis Acidification Reactor Before and after the water pump, piping and other water supply facilities designed by split system, combined system, respectively, by
The maximum daily average and the highest day when the maximum amount of sewage to determine.
4.1.8 In areas where the groundwater level is high, the amount of groundwater should be considered and the infiltration of groundwater should be determined according to the measured data.
4.2 Design water quality
4.2.1 Design water quality should be determined according to the actual measured effluent quality of the project, or refer to the same industry with the same size of the project emissions
Analogy.
4.2.2 Hydrolytic acidification reactor water quality should meet the following conditions.
1) pH should be 5.0 to 9.0;
2) COD. N. P should be 100 ~ 500. 5. 1;
3) If the biodegradability of sewage is better, COD concentration should be lower than 1500mg/L; if the biodegradability of sewage is poor, COD
Concentration may be relaxed.
4.3 Removal rate of pollutants in hydrolytic acidification reactor
The removal rate of contaminants in the hydrolytic acidification reactor can be found in Table 1.
Table 1 Hydrolysis Acidification Reactor Pollutant Removal Rate
Sewage (waste) water type water quality requirements
Pollutant removal rate
SS * CODCr BOD5
Urban sewage
Biodegradable or better
50% to 80% 30% to 50% 20% to 40%
Beer waste water, slaughtering waste water,
Food waste water, sugar wastewater and so on
Biodegradable better, non
Soluble COD ratio >
60%
50% to 80% 30% to 50% 20% to 40%
Papermaking wastewater, coking wastewater,
Coal chemical waste water, petrochemical waste
Water, tannery wastewater, oil waste
Water, textile dyeing and finishing wastewater,
Including industrial park wastewater
Biodegradable general
Soluble COD ratio
30% to 60%
30% to 50% 10% to 30% 10% to 20%
Other refractory organic wastewater
Biodegradable poor, non
Dissolved COD ratio <
30%
30% to 50% 10% or less 10% or less
* This value is the reference value for the upflow hydrolytic acidification reactor.
5 General requirements
5.1 Hydrolytic acidification reactor is generally applicable to the normal temperature of urban sewage, industrial wastewater and other low concentrations of sewage at the pre-service
Management, can remove suspended solids, degradation of organic matter, improve the biodegradability of sewage.
5.2 Hydrolysis Acidification Reactor The sewage treatment works shall comply with the following provisions.
1) the construction and operation of the waste (odor) gas, sewage, waste residue, noise and other pollutants in the governance and emissions,
Should meet the requirements of environmental impact assessment documents to prevent secondary pollution.
2) storage of sludge, drug storage site should be consistent with the provisions of GB 18599 and GB 18597.
5.3 The vertical design of the hydrolytic acidification reactor should make full use of the original terrain, meet the requirements of earthwork balance and reduce energy consumption.
5.4 Hydrolysis Acidification Reactor When the sewage treatment project is constructed in phases, the site area of the project shall be reserved for the overall processing scale,
And the overall arrangement. Pipe network and underground structures should be built once.
5.5 Hydrolysis Acidification Reactor Sewage treatment works of various pipelines should be arranged to avoid mutual interference, easy to clear and maintenance,
And reasonable layout and overhaul the pipeline, vent line drainage should be reflow treatment.
5.6 Hydrolytic Acidification Reactor The design and construction of sewage treatment works shall be in accordance with the relevant laws and regulations.
Laws and regulations and mandatory standards.
6 process design
6.1 General requirements
6.1.1 Hydrolytic Acidification Reactor types include upgraded hydrolytic acidification reactors, complex hydrolytic acidification reactors and complete
Mixed hydrolytic acidification reactor.
6.1.2 Treatment of urban sewage should be used up-flow hydrolysis of acidification reactor.
6.1.3 When dealing with industrial wastewater, according to the quality of waste water, water, etc. to choose the appropriate hydrolysis of acidification reactor, if the reaction
Slow growth of sludge can be used in complex hydrolytic acidification reactor.
6.2 Hydrolysis Acidification Reactor Wastewater Treatment Process
6.2.1 hydrolysis of acidification reactor sewage treatment process diagram is as follows.
Legend. Optional process unit recommended process unit
Hydrolysis Acidification Reactor for Subsequent Treatment
Sludge treatment
Water grill grit chamber
Fig.1 Schematic diagram of sewage treatment process of hydrolytic acidification reactor
6.2.2 Hydrolysis Acidification reactor before the pretreatment process should include solid-liquid separation, grit, water quality and water regulation.
6.2.3 Hydrolytic acidification reactor should be based on the actual situation is coarse, fine grille or set fine mesh sieve.
6.2.4 for urban sewage treatment, hydrolysis and acidification reactor should be set before the grit chamber, grit chamber design should be consistent with GB
50014.
6.2.5 for industrial wastewater treatment, hydrolysis of acidification reactor water pH if not meet the requirements of 4.2.2, should be set to pH
Value adjustment device.
6.2.6 for industrial wastewater treatment, hydrolysis and acidification reactor should be set up before the adjustment pool.
6.3 Upflow Hydrolysis Acidification Reactor
6.3.1 Reactor structure
The up-flow hydrolytic acidification reactor is mainly composed of a tank body, a water distribution device, a water collecting device and a sludge discharge device. reactor
The structure is shown in Fig.
Figure 2 Schematic diagram of the structure of a riser hydrolytic acidification reactor
6.3.2 Pool capacity and pool body
6.3.2.1 Upflow Hydrolysis Acidification Reactor The effective volume should be calculated using the hydraulic load or hydraulic retention time method,
HRTQV  (1)
Where.
V - hydrolytic acidification reactor effective volume, m3;
Q - design flow, m3/h;
HRT - hydraulic retention time, h.
6.3.2.2 The hydraulic retention time of the up-flow hydrolytic acidification reactor shall be determined by test or reference to a similar project,
Off the information can refer to Table 2 values.
Table 2 Riser Hydrolysis Acidification Reactor for Hydraulic Dwell Time Reference Table
Sewage (waste) water type water quality requirements hydraulic retention time (h)
Urban sewage can be biodegradable or generally 2 to 4
Beer waste water, slaughtering waste water, food waste water,
Sugar and other waste water
Biodegradability is good, non-soluble
COD ratio > 60%
2 ~ 6
Papermaking wastewater, coking wastewater, coal chemical wastewater,
Petrochemical wastewater, tannery wastewater, oily wastewater,
Textile dyeing and finishing wastewater, including industrial park waste
Biodegradable
COD ratio of 30% to 60%
4 ~ 12
Other refractory organic wastewater
Biodegradability is poor, non-soluble
COD ratio < 30%
10 or more
6.3.2.3 Upflow Hydrolysis Acidification Reactor type is preferably circular or rectangular, and the aspect ratio of rectangular reactor is preferably 1. 1 to 5. 1.
6.3.2.4 Upflow Hydrolysis Acidification reactor building materials may be made of reinforced concrete or stainless steel, carbon steel and anti-corrosion coating
Layer and other materials.
6.3.2.5 riser hydrolysis of acidification reactor effective water depth should be 4m ~ 8m, high 0.5m ~ 1.0m.
6.3.2.6 Upstream Hydrolysis Acidification Reactor The effluent flow rate is preferably 0.5m/h ~ 2.0m/h, which is appropriate for refractory wastewater
Reduce the flow rate or increase the return flow.
6.3.3 Water distribution devices
6.3.3.1 water distribution device should adopt multi-point water distribution device, each point of cloth water area should not be greater than 2m2, according to the need to choose a
Tube a hole type of cloth water, a tube of porous water, branch cloth and pulse water and so on.
6.3.3.2 water distribution device inlet point from the reactor bottom should maintain a distance of 150mm ~ 250mm.
6.3.3.3 The flow velocity of a pipe perforated pipe should be greater than 2m/s, the flow rate of water distribution pipe should be greater than 1m/s,
To set up the backwash tube.
6.3.3.4 a pipe with a hole cloth water is appropriate to use water distributor cloth water; from the water distributor to the outlet should adopt straight pipe; pipe vertical section
Flow rate should be controlled at 0.2m/s ~ 0.4m/s; pipe vertical section of the upper diameter should be greater than the lower diameter.
6.3.3.5 branches of water branch pipe outlet hole down from the bottom should be.200mm; outlet pipe diameter should be between 15mm ~ 25mm;
The water hole should be set at 45 inclined to the next cloth guide plate, the water hole should be on the bottom of the pool.
6.3.3.6 pulse water distributor size should be based on the design flow and pulse water cycle to determine the pool depth should be above 6.5m to prevent
There is too much sludge in the process of pulsing.
6.3.4 Water collection device
6.3.4.1 water should be used weir effluent, outlet weir mouth load should not be greater than 2.9L/(s · m).
6.3.4.2 water should be added to the sink in the cofferdam; weir on the head is greater than 25mm, the water at the triangle weir teeth 1/2. Water
The collection system should be located at the top of the hydrolytic acidification reactor.
6.3.4.3 When using a rectangular reactor, it is advisable to use the multi-tank effluent of parallel runoff weir.
6.3.4.4 When using a circular reactor, it is advisable to use radial multi-groove or polygonal tank outlet.
6.3.5 sludge discharge device
6.3.5.1 The amount of sludge produced by the hydrolysis and acidification reactor can be calculated as follows.
1000 /) 1 (X affSSQ Δ (2)
Where.
⊿X - sludge production, kg/d;
Q - design flow, m3/d;
SS - solid suspension concentration, kg/m3;
F - the removal rate of suspended solids, see Table 1;
Fa - sludge hydrolysis rate, should be tested or refer to similar projects to determine, urban sewage generally take 30%.
6.3.5.2 When the gravity sludge is used in the reactor, the sludge discharge point should be located in the lower part of the reactor, and the sludge layer and the water surface should be high
Degree should be maintained at 1.0m ~ 1.5m. At the same time should be reserved at the bottom of the mouth.
6.3.5.3 Rectangular pond should be slumped along the longitudinal direction of the pond.
6.3.5.4 For a pipe-type perforated pipe, consider the inlet pipe and the sludge or vent pipe.
6.3.5.5 Dump pipe pipe diameter should be greater than 150mm.
6.4 Composite Hydrolytic Acidification Reactor
6.4.1 Composite hydrolysis of acidification reactor pool capacity, pool body, cloth water and water collection device, mud device design can refer to
6.3 Execution.
6.4.2 composite hydrolysis of acidification reactor filled with the filler should have no toxic to microorganisms, easy to hang film, light, high strength,
Anti-aging, large surface area and high porosity characteristics.
6.4.3 packing can be used to fill the hanging and fixed and so on.
6.4.4 Different types of fillers can be used in combination.
6.5 Fully mixed hydrolytic acidification reactor
6.5.1 The volume of the fully mixed hydrolytic acidification reactor can be determined with reference to 6.3.2.1.
6.5.2 Hydraulic retention time should be determined by experiment or with reference to similar works. In the absence of relevant information, the hydraulic retention time should
Press the following formula.
HRT  (3)
Where.
X - hydrolytic acidification reactor in the average sludge concentration, generally take 4g/L ~ 8g/L;
C - constant, hgL-1, the value can refer to Table 3.
Table 3 Complete mixed hydrolysis of acidification reactor constant C value reference table
Pollutant (waste) water type water quality requirements constant C (hgL-1) value
Beer waste water, slaughter of waste water, food
Waste water, sugar and other waste water
Biodegradability is better, non-soluble COD ratio
Example > 60%
30 ~ 80
Papermaking wastewater, coking wastewater, coalification
Waste water, petrochemical waste, tannery waste
Water, oily wastewater, textile dyeing and finishing waste
Water, etc., including industrial park wastewater
Biodegradable general, non-soluble COD ra...
...