Path:
Home >
HJ >
Page3 > HJ 2014-2012
Price & Delivery
US$709.00 · In stock · Download in 9 secondsHJ 2014-2012: Technical specifications for biofilter in wastewater bio-film treatment
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See
step-by-step procedureStatus: Valid
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| HJ 2014-2012 | English | 709 |
Add to Cart
|
5 days [Need to translate]
|
Technical specifications for biofilter in wastewater bio-film treatment
|
Click to Preview a similar PDF
Basic data
| Standard ID | HJ 2014-2012 (HJ2014-2012) |
| Description (Translated English) | Technical specifications for biofilter in wastewater bio-film treatment |
| Sector / Industry | Environmental Protection Industry Standard |
| Classification of Chinese Standard | Z23 |
| Classification of International Standard | 13.030.20 |
| Word Count Estimation | 27,280 |
| Quoted Standard | GB 3096; GB 8978; GB 12348; GB 18918; GB/T 18920; GB 50009; GB 50011; GB 50013; GB 50014; GB 50016; GB 50052; GB 50053; GB 50054; GB 50069; GB 50141; GB 50187; GB 50191; GB 50194; GB 50204; GB 50205; GB 50222; GB 50231; GB 50268; GB 50275; GB 50334; GB 50 |
| Regulation (derived from) | Department of Environmental Protection Notice No. 21 of 2012; |
| Issuing agency(ies) | Ministry of Ecology and Environment |
| Summary | This standard specifies the process to adopt aerobic biofilter technology -based pollution (waste) water treatment engineering process design, the main process equipment, detection and control, construction inspection, operation and maintenance and other |
HJ 2014-2012: Technical specifications for biofilter in wastewater bio-film 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 biofilter in wastewater bio-film treatment
National Environmental Protection Standard of the People's Republic
Biological filter method sewage treatment engineering technical specification
Published on.2012-03-19
2012-06-01 Implementation
Ministry of Environmental Protection released
Content
Foreword.I
1 Scope.1
2 Normative references..1
3 Terms and Definitions 2
4 Contaminants and pollution loads.4
5 General requirements.5
6 Low-load biofilter process design.6
7 High-load biofilter process design.8
8 tower biofilter process design 10
9 aerated biological filter process design 11
10 Main process equipment and materials.18
11 Detection and Process Control 19
12 Major auxiliary projects.20
13 Construction and acceptance.21
14 Operation and Maintenance .25
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"
Dyeing, improving environmental quality, standardizing the application of biofilters in sewage (waste) water treatment projects, and developing this standard.
This standard specifies the process design, main process equipment and testing of the sewage (waste) water treatment project using the biofilter method.
Technical requirements with control, construction acceptance, operation and maintenance.
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, Tsinghua University, Anle Engineering Co., Ltd., Anhui
Guosheng Environmental Protection and Energy Saving Technology Co., Ltd., Beijing Urban Drainage Group Co., Ltd., Beijing Environmental Protection Science Research
Research Institute.
This standard was approved by the Ministry of Environmental Protection on March 19,.2012.
This standard has been implemented since June 1,.2012.
This standard is explained by the Ministry of Environmental Protection.
Biological filter method sewage treatment engineering technical specification
1 Scope of application
This standard specifies the process design and main design of the bio-filter process (waste) water treatment project based on aerobic processes.
Technical requirements for process equipment, inspection and control, construction acceptance, operation and maintenance. This standard does not apply to dirty (waste) water
Anaerobic biofilter treatment process.
This standard applies to urban sewage using biofilter method and industrial wastewater treatment similar to urban sewage water quality.
Cheng can be used as the technical basis for environmental impact assessment, design, construction, environmental protection acceptance and operation 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 8978 Integrated Wastewater Discharge Standard
GB 12348 industrial enterprise boundary noise standard
GB 18918 Pollutant discharge standard for urban sewage treatment plants
GB/T 18920 Urban Wastewater Recycling Urban Miscellaneous Water Quality
GB 50009 Building Structure Load Specification
GB 50011 seismic design code for buildings
GB 50013 Outdoor Water Supply Design Code
GB 50014 Outdoor Drainage Design Code
GB 50016 Building Design Fire Code
GB 50052 design specification for power distribution system
GB 50053 10kV and below substation design specifications
GB 50054 Low Voltage Distribution Design Specification
GB 50069 Water supply and drainage engineering structure design specification
GB 50141 Water supply and drainage structure engineering construction and acceptance specification
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 50205 Steel 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 50275 Compressor, fan, pump installation engineering construction and acceptance specifications
GB 50334 Urban Wastewater Treatment Plant Engineering Quality Acceptance Specification
GB 50335 Wastewater Reuse Engineering Design Code
GB 50352 General rules for civil building design
GB J22 factory mine road design specification
GB J87 industrial enterprise noise control design specification
GBZ 1 industrial enterprise design hygiene standard
CJ343 sewage discharged into urban sewer water quality standards
CJJ31 Urban Wastewater Treatment Plant Auxiliary Building and Auxiliary Equipment Design Standard
CJJ60 urban sewage treatment plant operation, maintenance and safety technical regulations
CJ/T 43 water treatment filter
CJ/T 51 Standard for urban sewage quality inspection methods
CJ/T 221 Urban Wastewater Treatment Plant Sludge Inspection Method
CJ/T 299 artificial ceramsite filter for water treatment
Technical regulations for CECS265 biological aerated filter
HJ/T 91 Surface Water and Wastewater Monitoring Technical Specifications
HJ/T 250 Environmental Protection Products Technical Requirements Rotary Fine Grille
HJ/T 251 environmental protection product technical requirements Roots blower
HJ/T 252 environmental protection product technical requirements, microporous aerator
HJ/T 278 environmental protection product technical requirements single-stage high-speed aeration centrifugal blower
HJ/T 336 Environmental Protection Product Technical Requirements Submersible Sewage Pump
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 369 Environmental Protection Product Technical Requirements Dosing Device for Water Treatment
Measures for Completion and Acceptance of Construction Projects (Engineering) (formerly State Planning Commission Construction [1990] No. 215)
Measures for the Administration of Environmental Protection Acceptance for Completion of Construction Projects (formerly State Environmental Protection Administration Order No. 13)
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1 biofilter method biofilter; biological filter
Physical filtration of fillers filled in the structure by means of sewage (waste) water, and organisms attached to the filler
Membrane aerobic oxidation, anoxic denitrification and other biochemical processes combined with manual treatment of pollutants in contaminated (waste) water,
Common methods include low-load biofilter method, high-load biofilter method, tower biofilter method and aerated biofilter method.
3.2 low-rate biological filter, trickling filter
The filter material has a large particle size, natural ventilation and oxygen supply, and the BOD volume load of the influent water is low (usually not more than 0.4kg/(m3·d))
a biological filter. Also known as ordinary biofilter or trickling filter.
3.3 high-load biological filter high-rate biological filter
On the basis of low-load biofilters, by limiting the influent BOD content and adopting techniques such as treating effluent reflux
A higher filtration rate, which increases the BOD volume load by 6 to 8 times, while ensuring that the BOD removal rate does not decrease significantly.
Biofilter.
3.4 tower biofilter biotower
The structure is in the form of a tower, and the light filter material (filler) is layered in the tower, and the sewage (waste) water is sprayed from top to bottom, and
The biofilm on the filter material and the air flowing from the bottom up are in full contact, so that the contaminated (waste) water is purified.
3.5 Biological aerated filter, BAF
A biological filter combined with contact oxidation and filtration, using artificial aeration, intermittent backwashing, etc.
Complete removal of organic contaminants and suspended solids.
3.6 Filtering media
Microorganisms in the biofilter are inhabited, propagated, and have physical interception filtration of suspended solids in contaminated (waste) water.
The carrier of action.
3.7 filter layer filter bed
A layer of material that effectively purifies and filters contaminants in water during filtration.
3.8 support layer filter supporting bed
In order to prevent the filter material from escaping from the water distribution system, a layer of granular material is disposed between the water distribution system and the filter layer.
3.9 effluent weir plate
A device that prevents the filter material from escaping and regulates the water balance at the effluent of the filter.
3.10 backwash time
The time elapsed by the backwash of the filter layer, in min.
3.11 empty bed retention time
The hydraulic retention time of the volume of contaminated (waste) water in the filter layer of the biofilter, in h.
3.12 backwashing rate
The flow rate of the backwash water or backwash air passing through the unit area filter layer per unit time is generally L/(m2·s)
Bit.
3.13 gas water combined backwash combined water and air backwash
In order to improve the effect of water backwashing, a backwashing method using air-assisted flushing is also used.
3.14 five-day biochemical oxygen demand volume load BOD5-volumetric loading rate
The five-day BOD that can be accepted per cubic meter of effective volume per unit time is generally kg BOD5/(m3·d)
For the unit.
3.15 nitrification volumetric load volumetric loading rate
The amount of ammonia nitrogen nitrated per cubic meter of effective volume per unit time is generally in units of kgNH3-N/(m3·d).
3.16 denitrification volumetric load denitration volumetric loading rate
The amount of nitrate nitrogen denitrified per cubic meter of effective volume per unit time is generally in units of kgNO3-N/(m3·d).
3.17 hydraulic load surface loading rate , hydraulic loading rate
The amount of sewage (waste) water that can be accepted per day per square meter of the treatment unit is generally in units of m3/(m2·d).
3.18 filtration rate
The amount of filtered water per unit time of the filter area of the unit filter, in m/h.
3.19 hydraulic retention time
The actual average contact residence time (in h) of the contaminated (waste) water passing through the filter layer of the biofilter after filling the filter.
3.20 fixed water distributor fixed distributor
A water distribution device composed of a fixed water distribution pipe and a nozzle in the biological filter.
3.21 Rotating water distributor rotating distributor
The reaction wall composed of several water pipes in the biological filter, which uses the reaction force generated by the water flow ejected from the orifice of the water pipe,
A rotating water distribution device that pushes the water distribution pipe around the rotating shaft to achieve uniform water distribution.
3.22 air diffuser air diffuser
An air aeration device for aerating oxygen supply in an aerated biological filter.
3.23 filter head nozzle
Installed on the supporting filter plate in the lower part of the aerated biological filter for normal water distribution, backwashing water distribution, backwashing gas distribution
A cloth water and air distribution device.
3.24 filter board support board
A pallet that has a special filter head and carries a filter material and has a certain bearing strength and horizontal precision requirement.
3.25 reflux ratio
When denitrifying with a pre-denitrification biofilter, the ratio of the return flow of nitrification liquid to the designed influent flow rate is generally expressed as a percentage
meter.
4 Contaminants and pollution loads
4.1 The amount of contaminated (waste) water entering the biofilter shall be determined in accordance with the relevant provisions of HJ/T 91 and GB 50014.
4.2 The contaminated (waste) water entering the biofilter should have good biodegradability, BOD5/CODCr should be greater than 0.3, and the pH should be suitable.
For 6.5~9.5, the water temperature should be 12 °C ~ 35 °C. The pollution (waste water) nutrient combination ratio (BOD5. nitrogen. phosphorus) should be 100.5.1, and
Water should not contain contaminants that inhibit and toxic to microorganisms.
4.3 When the sewage (waste) water entering the biofilter contains large particles of suspended solids, grease, gravel, fibrous matter, affecting biochemistry
When the treated material is different, or the influent water quality is significantly different from the domestic sewage water quality, and the contaminated (waste) water is less biodegradable, it should be rooted.
Appropriate pre-treatment or pre-treatment according to the influent water quality.
4.4 When the influent water quality and water volume fluctuate greatly, adjustment facilities should be installed.
4.5 When the sewage treatment has the requirement of removing ammonia nitrogen, the total alkalinity of the influent (calculated as calcium carbonate CaCO3)/ammonia nitrogen (NH3-N) ratio
It should be no less than 7.14, and the residual alkalinity of the aerobic pool (zone) should be greater than 70mg/L. If the above conditions are not met, the alkalinity should be added.
4.6 When the wastewater treatment has the requirement of total nitrogen removal, the denitrification requirement for the easily degradable carbon source BOD5/total Kjeldahl nitrogen ratio of the influent should be greater than
4.0, the ratio of total alkalinity (calcium carbonate CaCO3)/ammonia nitrogen (NH3-N) should not be less than 3.6, does not meet the above conditions
When appropriate, the carbon source or alkalinity should be properly supplemented.
4.7 When the wastewater treatment requires phosphorus removal, the ratio of BOD5/total phosphorus in the influent water should not be less than 17.0. Biofilter for effluent
When the total phosphorus concentration does not meet the design requirements, other methods can be used to remove phosphorus, such as chemical phosphorus removal.
4.8 When there is no test data, the pollutant removal rate of the biofilter wastewater treatment process can be calculated according to Table 1.
Table 1 General removal rate of pollutants in biological filter wastewater treatment process
Sewage category main process
Contaminant removal rate /%
Suspended matter
(SS)
Five days of biochemical needs
Oxygen content (BOD5)
Chemical oxygen demand
Quantity (CODCr)
Ammonia nitrogen total nitrogen total phosphorus
Municipal sewage
Pretreatment
Filter
75~98 80~95 80~90 80~95
50~80
(has hypoxia
Unit or zone
area)
40~80 (have
Anaerobic unit
Or area)
Industrial waste
Pretreatment student
Filter
75~98 70~90 70~85 - - -
Note. According to the influent water quality, water supply requirements, process flow, etc., the biofilter processing unit can be set with different pretreatment or pretreatment methods.
5 General requirements
5.1 Biological filter wastewater treatment process should be suitable for secondary treatment of urban sewage. Also suitable for similar municipal sewage water
Biological treatment of qualitative industrial wastewater as part of the industrial wastewater treatment process.
5.2 Biofilter The wastewater treatment process can be applied separately or in combination with other wastewater treatment processes. Biofilter
The selection of the art process should be based on different influent water quality and treatment requirements, through technical, economic and environmental impact factors.
Determined after analysis.
5.3 The engineering design shall comply with the relevant standards and technical specifications of the countries such as GB 50013, GB 50014 and GB 50335.
Claim.
5.4 The treatment structure of the biological filter method should adopt anti-freeze, deodorant and fly control according to local temperature and environment conditions.
And measures such as anti-corrosion, the treatment structure should comply with the relevant provisions of GB 50069, GB 50009 and GB 50191.
5.5 The detection and control system should be set according to the requirements of the process operation to realize the automation of operation management.
5.6 Exhaust gas, sewage, waste residue, noise and other pollutants generated during the construction and operation of the sewage treatment plant (station)
The governance and discharge shall comply with the relevant provisions of national environmental protection regulations and standards to prevent secondary pollution.
5.7 The design and construction of sewage treatment plants (stations) shall adopt effective noise reduction, noise reduction, greening and other measures to reduce noise.
The design of noise and vibration control shall comply with the requirements of GB J87. The noise inside and outside the equipment room shall comply with GBZ 1 and GB 3096 respectively.
The provisions of the factory boundary noise should comply with the provisions of GB 12348.
5.8 The building (structure) shall be provided with the necessary protective railings, adopt appropriate anti-slip measures, and comply with the provisions of GB 50352.
5.9 The fire protection design of buildings in the sewage treatment plant (station) area shall comply with the provisions of GB 50016 and GB 50222.
5.10 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.
5.11 The site selection and overall layout of the sewage treatment plant shall comply with the relevant provisions of GB 50014. The general plan design should be consistent
Relevant provisions of GB 50187.
5.12 The design of the auxiliary buildings and ancillary equipment of the sewage treatment plant shall comply with the provisions of CJJ31, and the seismic design shall comply with GB 50011.
Provisions.
5.13 The urban sewage treatment plant shall install an online monitoring system in accordance with the relevant provisions of GB 18918, and other sewage treatment projects shall.
Install an online monitoring system in accordance with national or local environmental protection management requirements. Installation, acceptance and operation of an online monitoring system
It shall comply with the relevant provisions of HJ/T 353, HJ/T 354 and HJ/T 355.
6 Low-load biofilter process design
6.1 General requirements
6.1.1 Low-load biofilters are suitable for small-scale sewage (waste) water treatment, and according to the water quality conditions of sewage (waste) water,
Pre-treatment or pre-treatment facilities such as grit chamber, primary sedimentation tank or coagulation sedimentation tank, degreasing tank and anaerobic hydrolysis tank should be provided before the filter.
6.1.2 The 5-day BOD value of the low-load biofilter inlet water should be controlled below.200mg/L. Above this value, it should be
The treated effluent is refluxed to dilute the influent organic concentration.
6.2 Design parameters and requirements
6.2.1 The planar shape of the low-load biofilter should be circular or rectangular.
6.2.2 The number of low-load biofilters or the number of divisions shall be not less than 2, and shall be designed according to the same work.
6.2.3 The filter material of the low-load biofilter should be corrosion-resistant, high-strength, large in specific surface area, high in void ratio, and taken as far as possible.
material. Generally, inorganic filter materials such as gravel, pebbles, slag, and coke should be used. Plastic products used as filter materials should have good resistance
Oxidation properties.
6.2.4 When using gravel filter media, the following requirements shall be met.
a) The particle size of the filter media in the lower layer of the filter should be 60mm~100mm, and the layer thickness should be 0.2m; the particle size of the upper filter should be 30mm~50mm.
Layer thickness 1.3m ~ 1.8m;
b) When using a filter tank of crushed stone filter material to treat urban sewage or industrial wastewater similar to the quality of urban sewage, at normal temperature,
The hydraulic load is preferably 1.0m3/(m2·d) to 3.0 m3/(m2·d) based on the area of the filter; the five-day biochemical oxygen demand volume load is
The filter material volume meter is preferably 0.15 kg BOD5/(m3 · d) ~ 0.3 kg BOD5/(m3 · d).
6.2.5 The water distribution of the low-load biofilter can be fixed water distribution system, from the dosing pool, water distribution network and nozzle
to make. With the siphon effect of the dosing pool, the water distribution process is automatically intermittent. The spraying cycle is generally 5 min to 15 min.
The nozzles installed on the water distribution pipe should be 0.15m to 0.20m above the filter material surface, and the nozzle diameter is usually 15 mm to 20 mm.
6.2.6 Low-load biofilters should be supplied with natural ventilation, and the height of the bottom space of the filter should not be less than
0.6m, natural ventilation holes shall be provided along the lower part of the filter tank wall, the total area shall not be less than 1% of the surface area of the pool.
6.2.7 The bottom of the low-load biofilter should have a slope of 1% to 2% slope to the gully, and the gully should have a slope of 0.5% to 2%.
Slope to the total drainage ditch, the slope of the total drainage ditch should not be less than 0.5%, and there are measures to flush the bottom drain.
6.3 Design calculation
6.3.1 The total volume of the filter material can be calculated as follows.
V1000
Q SV
⋅= ⋅ (1)
In the formula.
V -- total volume of the filter material (bulk volume), m3;
Q -- design flow of the filter, m3/d;
S0 -- 5 days biochemical oxygen demand in the filter water, mg/L;
LV - filter 5 days biochemical oxygen demand volume load, kgBOD5/(m3 · d), preferably 0.15kg BOD5/(m3 · d) ~
0.3 kg BOD5/(m3 · d).
6.3.2 The effective area of the filter can be calculated as follows.
VF = (2)
In the formula.
F -- effective area of the filter, m2;
H -- the total height of the filter layer, m, preferably 1.5m ~ 2.0m;
V - total volume of filter media (bulk volume), m3.
6.3.3 Hydraulic load check filter area, which can be calculated as follows.
Qq = (3)
In the formula.
q -- the hydraulic load of the filter [ m3/(m2 · d)], preferably 1m3/(m2 · d) ~ 3m3/(m2 · d);
Q -- design flow of the filter, m3/d;
F -- effective area of the filter, m2.
7 High-load biofilter process design
7.1 General requirements
7.1.1 High-load biofilters are suitable for small and medium-sized sewage (waste) water treatment, and according to the quality conditions of sewage (waste) water,
Pre-treatment or pre-treatment facilities such as grit chamber, primary sedimentation tank or coagulation sedimentation tank, degreasing tank and anaerobic hydrolysis tank should be provided before the filter.
7.1.2 It is advisable to use a single-stage filter system. If the concentration of raw sewage pollutants is high and the requirements for treatment water quality are high,
Two-stage filter system.
7.1.3 The 5-day biochemical oxygen demand of the high-load biofilter inlet water should be controlled below 300mg/L, otherwise biofilter should be used.
The pool treated the effluent reflux, and the reflux ratio was calculated. When the concentration of influent pollutants is high or contains certain toxic to microorganisms
When the contaminated (waste) water of the component is used, it should also be refluxed.
7.2 Design parameters and requirements
7.2.1 The planar shape of the high-load biofilter should be round.
7.2.2 High-load biofilters should always use a rotating water distribution device.
7.2.3 The total height of the filter layer and the support layer should be 2.0m~4.0m. When using natural ventilation, the height of the filter layer should not be large
At 2.0m; when the height of the filter layer exceeds 2.0m, manual forced ventilation measures should be taken.
7.2.4 High-load biofilters should use gravel or plastic products as filter materials. When using gravel filter materials, the following should be met.
Claim.
(1) The particle size of the filter media in the lower layer of the filter should be 70mm~100mm and the thickness is 0.2m; the particle size of the...
...
