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HJ 580-2010 English PDF

HJ 580-2010_English: PDF (HJ580-2010)
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BASIC DATA
Standard ID HJ 580-2010 (HJ580-2010)
Description (Translated English) Technical sperifications for oil-contained wastewater treating process
Sector / Industry Environmental Protection Industry Standard
Classification of Chinese Standard Z23
Classification of International Standard 13.060.30
Word Count Estimation 14,177
Date of Issue 2010-10-12
Date of Implementation 2011-01-01
Quoted Standard GB 50014; CJJ 60
Drafting Organization Environmental R & D Center Co., Ltd. Jiangxi Jindal
Regulation (derived from) Department of Environmental Protection Notice No. 73 of 2010
Summary This standard specifies the oily wastewater treatment engineering design, construction, commissioning, operation and maintenance management of the basic requirements. This standard applies to oil pollution based sewage treatment works, can be used as environmental impact assessment, design and construction of environmental protection facilities, environmental check and acceptance of completed construction projects after the completion of the technical basis for operation and management.

Standards related to: HJ 580-2010

HJ 580-2010
Technical sperifications for oil-contained wastewater treating process
National Environmental Protection Standard of the People's Republic
Technical specification for oily wastewater treatment engineering
Technical specifications for oil-contained wastewater treating process
Released on.2010-10-12
2011-01-01 Implementation
Ministry of Environmental Protection released
Ministry of Environmental Protection
announcement
No. 73 of.2010
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"
Designed and operated, the six standards, such as the Technical Specifications for Brewing Industrial Wastewater Treatment, are now approved as national environmental protection standards and issued.
The standard name and number are as follows.
I. Technical specifications for brewing industrial wastewater treatment engineering (HJ 575-2010)
2. Technical specification for wastewater treatment engineering of anaerobic-anoxic-aerobic activated sludge process (HJ 576-2010)
3. Technical specification for sequencing batch activated sludge treatment wastewater treatment (HJ 577-2010)
4. Technical specification for wastewater treatment engineering of oxidation ditch activated sludge process (HJ 578-2010)
V. Membrane separation method technical specification for sewage treatment engineering (HJ 579-2010)
The above standards have been implemented since January 1,.2011 and published by the China Environmental Science Press. The standard content can be found on the website of the Ministry of Environmental Protection.
Special announcement.
October 12,.2010
Content
Foreword..iv
1 Scope..1
2 Normative references..1
3 Terms and Definitions.1
4 Design water quantity and design water quality 2
5 overall design..2
6 Oily wastewater treatment unit process design 3
7 Labor Safety and Occupational Health 8
8 Construction and acceptance.8
9 Operation and Maintenance Management 8
Appendix A (informative appendix) Main process parameters and calculation formula of coalescing and degreasing device 10
Iv
Foreword
To implement the "Environmental Protection Law of the People's Republic of China" and the "Water Pollution Control Law of the People's Republic of China", regulate oily sewage treatment workers
This standard is formulated for the construction and operation management of the project, prevention and control of environmental pollution, protection of the environment and human health.
This standard specifies the technical requirements for process design, safety and environmental protection, construction and acceptance in oily wastewater treatment projects.
Appendix A of this standard is an informative annex.
This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection.
This standard is mainly drafted by. Jiangxi Jindalai Environmental Research and Development Center Co., Ltd., Huazhong University of Science and Technology, Beijing Environmental Protection Science Research
Research Institute.
This standard was approved by the Ministry of Environmental Protection on October 12,.2010.
This standard has been implemented since January 1,.2011.
This standard is explained by the Ministry of Environmental Protection.
Technical specification for oily wastewater treatment engineering
1 Scope of application
This standard specifies the basic requirements for the design, construction, acceptance, operation and maintenance management of oily wastewater treatment projects.
This standard is applicable to sewage treatment projects mainly based on oil pollution, which can be used as environmental impact assessment, environmental protection facility design and construction, and construction.
The technical basis for the completion and environmental protection acceptance of the project and the operation and management after the completion of the project will be established.
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 50014 Outdoor Drainage Design Code
CJJ 60 sewage treatment operation and maintenance and safety technical regulations
“Measures for Completion and Acceptance of Construction Projects (Engineering)” (National Planning Commission Construction [1990] No. 215)
Measures for the Administration of Environmental Protection Acceptance for Completion of Construction Projects (Order No. 13 of the State Environmental Protection Administration)
3 Terms and definitions
The following terms and definitions are in accordance with this standard.
3.1
Grease oil and grease
A compound of ethanol or glycerol (glycerol) and a fatty acid, referred to as a fatty acid glyceride. At room temperature, liquid fatty acid glycerides,
It is called oil; solid fatty acid glyceride, called fat.
3.2
Oily wastewater
Refers to the sewage where the main pollutant is oil.
3.3
Oil floating oil
Refers to the oil particle diameter of more than 100 μm, which can float faster after standing, and the oil film of the continuous phase floats on the water surface.
3.4
Dispersed oil
It refers to the oil particle size of 10 ~ 100 μm, suspended in the sewage with tiny oil beads, unstable, easy to form floating oil after standing.
3.5
Emulsified oil
Refers to the oil particle size of less than 10 μm, generally 0.1 ~ 2 μm, forming a stable emulsion. And the oil droplets are more dispersed in the sewage.
stable.
3.6
Dissolved oil
It is dispersed in sewage by molecular state or chemical method to form a stable homogeneous system, and the particle size is generally less than 0.1 μm.
3.7
Adjusting the grease trap and adjusting the oil separation tank
Refers to a sewage treatment structure used to regulate water quality, water volume and oil separation function.
3.8
Oil separation tank
Refers to a sewage treatment structure designed to separate oil slicks.
3.9
Air floatation
Refers to the treatment method in which the air microbubbles are combined with the oil particles to increase the buoyancy of the oil particles and to quickly separate the oil in the oily sewage.
3.10
Coarse granulation of oil water
Refers to the difference in affinity between the oil and water relative to the coalescing material, so that the fine oil beads accumulate on the surface of the coalescing material into larger particles or oil films.
Thereby achieving the process of oil-water separation.
3.11
Primary treatment of oil wastewater
Refers to the treatment stage of oil-water separation using grease traps.
3.12
Secondary treatment of oil wastewater
Refers to the treatment stage of oil-water separation by air flotation, coarse granulation, compaction, filtration or the like.
4 Design water quantity and design water quality
4.1 Design water quantity
The designed water quantity shall be determined according to the current national industrial water consumption regulations or calculated according to formula (1).
Q= K×q×S (1)
Where. Q--the total amount of oily sewage produced daily, m3/d;
q--The amount of sewage produced per unit of product, m3/piece;
S--Total number of products produced per day, pieces;
K--variation coefficient, determined according to production process or experience.
4.2 Design water quality
4.2.1 Oil-containing sewage produced by the metal processing industry, oleochemical industry, etc., the pollutants are oils, surfactants and suspended impurities.
4.2.2 Oily sewage produced by slaughtering and meat processing industry and catering industry contains animal and vegetable oils with strong biodegradability.
4.2.3 The design quality should be determined based on the survey data or with reference to similar industrial water quality.
5 overall design
5.1 General provisions
5.1.1 Oily sewage should be treated separately to ensure that the urban sewage treatment system or subsequent sewage treatment process is normal.
run.
5.1.2 Oily wastewater treatment project should select the appropriate treatment process according to the water quality characteristics of oily sewage in different industries, and according to the sewage discharge
Let go and local environmental protection requirements, after technical and economic comparison.
5.1.3 The final treatment effect of oily sewage should meet the requirements of national or local wastewater discharge standards.
5.1.4 The treatment depth of oily sewage is divided into primary degreasing treatment and secondary degreasing treatment. The oil content of the primary degreasing treatment effluent should be controlled at 30 mg/L.
the following.
5.1.5 According to the production process of the factory, the recycling of production water should be realized to reduce the amount of sewage treatment water.
5.1.6 The installation of oily sewage treatment engineering detection and control equipment shall refer to the provisions of GB 50014. At the same time, the selection of the instrument should be based on the pollution
The content of oils and suspended solids in the water, the characteristics of corrosive substances and the laying conditions of the pipeline are determined.
5.2 Site selection
5.2.1 Oily wastewater treatment facilities should be located below the dominant wind direction in the industrial zone in summer; as far as possible in the downstream areas of the industrial zone.
5.2.2 The development of the industrial plant area should be considered, taking into account the development of the prospect, and consideration should be given to the conditions of transportation, water and electricity supply, hydrogeology and so on.
Should refer to the relevant provisions of GB 50014.
5.3 Overall layout
The overall layout of oily wastewater treatment works should refer to the relevant provisions of GB 50014.
5.4 Sewage treatment process
5.4.1 The recommended process flow for oily wastewater treatment in metal processing industry and oleochemical industry is shown in Figure 1.
Pre-treatment grease trap air flotation tank discharge water
Figure 1 Basic process flow chart for oily wastewater treatment in metal processing, light industry and oleochemical industry
5.4.2 The recommended process flow for the treatment of oily sewage in slaughter, meat processing and catering industry is shown in Figure 2.
Pretreatment hydrolysis acidification contact oxidation disinfection tank sedimentation tank discharge water
Figure 2 Basic process flow chart for oily wastewater treatment in slaughter, meat processing and catering industry
6 Process design of oily sewage treatment unit
6.1 Advection flow grease trap
6.1.1 The advection grease trap should be used to remove oil beads with a particle size of 150 μm or more.
6.1.2 Oily sewage should enter the water distribution tank of the grease trap in a basically non-impact condition, and the water head of the front structure of the influent water distribution room should be
Less than or equal to 0.2 m.
6.1.3 The influent water distribution room shall be vertical baffle type, two-chamber configuration, and the lower part of the second-chamber partition wall shall be suspended 0.5 m. The first chamber is downward flow, and the second chamber is upward.
flow. The second chamber is separated from the grease trap by a water distribution wall.
6.1.4 The water distribution hole of the inlet water distribution wall shall be set at 0.5 m below the water surface and 0.8 m above the bottom of the pool. The flow rate of the water distribution orifice should be 20 to 50 mm/s.
6.1.5 The calculated horizontal flow rate of oily sewage in the oil separation section shall be 2 to 5 mm/s.
6.1.6 The width of the single cell should be less than or equal to 6 m, and the aspect ratio of the grease trap should be no less than 4.
6.1.7 The effective water depth of the grease trap should be less than or equal to 2 m, and the height of the tank should be less than or equal to 0.4 m.
6.1.8 After the oil separation section, the water room should be connected, and the water outlet room should be a single room configuration. The water outlet and the oil separation section are separated by the water distribution wall, and the water is discharged from the oil separation section.
堰 Keep the oil level in the grease trap. After the oil separation section, the sump and the outlet pipe are connected.
6.1.9 The water distribution hole of the outlet water distribution wall shall be set at 0.8 m below the water surface and 0.5 m above the bottom of the pool. The flow rate of the water distribution orifice should be 20 to 50 mm/s.
6.1.10 A scraper scraper should be installed at the bottom of the oil separation section. The moving speed of the scraper should be less than 2 m/min.
6.1.11 The diameter of the drain pipe in the grease trap should be greater than.200 mm. The pipe end can be connected to a pressure water pipe to flush the drain pipe.
6.1.12 The sludge bucket depth is generally 0.5 m, the bottom width is preferably greater than 0.4 m, the side inclination angle is 45° to 60°, and the slope of the bottom of the tank to the sludge bucket is 0.01~
0.02.
6.1.13 The oil collecting pipe should be Φ200~300 mm. When the pool width is above 4.5 m, the collecting pipe should not exceed 4 in series.
6.1.14 In cold areas, heating facilities should be provided for the oil collection pipes and grease traps. There should be a steam pipe joint near the grease trap for the purpose of clearing
Pipe or fire.
6.1.15 The grease trap should be provided with a cover made of non-combustible material and a steam fire-fighting facility should be provided.
6.2 sloping plate grease trap
6.2.1 The sloping oil trap should be used to remove oil beads larger than 80 μm.
6.2.2 Oily sewage should enter the inflow water distribution area of the sloping oil trap in a substantially non-impact condition, and the effluent water of the front structure of the influent water distribution area
The head should be less than or equal to 0.2 m.
6.2.3 The hydraulic load on the surface of the floating section should be 0.6-0.8 m3/(m2·h).
6.2.4 The net distance of the inclined plate should be 40 mm, the inclination should be less than or equal to 45°, the flow velocity between the plates should be 3~7 mm/s, and the hydraulic condition between the plates is Ray.
The number Re is less than 500; the Froude number Fr is greater than 10.
The Reynolds number is calculated according to equation (2).
V RRe γ
⋅ = (2)
The Froude number is calculated according to equation (3).
2VFr
Rg
= 3 ( )
Where. V--horizontal flow rate, m/s;
/s2;
6.2.5 Facilities such as sludge at the bottom of the pool.
The space between the chamber and the wall should be tight and seamless.
Dissolved air flotation oil should be used for oily sewage with low oil content and surface active substances, used to remove fine particles with a specific gravity close to l in sewage.
Calculate, the design air volume should be considered in 25% excess.
Gas, water charge
The recirculating dissolved gas tank should be dynamic and should have water level control measures.
R--hydraulic radius, m;
Γ--water viscosity, m
- Gravity acceleration, 9.81 m2/s.
The tank should be equipped with oil slick collection, swash plate cleaning and
6.2.6 The sloping plate material should be corrosion resistant, smooth and oil-free.
6.2.7 The speed of scraping sludge in the pool should be less than or equal to 15 mm/s, the plate body
6.2.8 The diameter of the drain pipe should be greater than or equal to.200 mm. The pipe end can be connected with a pressure water pipe to flush the drain pipe.
6.3 dissolved gas
6.3.1
Suspended solids and oil stains larger than 0.05 μm. The influent pH is 6.5-8.5, and the oil content is less than 100 mg/L.
6.3.2 The dissolved air flotation device shall consist of two parts. the pool body and the dissolved gas system. The design should meet the following requirements.
6.3.2.1 Dissolved air flotation method is preferably a gas floating tank with a dissolved gas tank.
6.3.2.2 The working pressure of the dissolved gas tank should be 0.3-0.5 MPa.
6.3.2.3 The amount of air can be 5% to 10% by volume of sewage.
6.3.2.4 The residence time of sewage in the dissolved gas tank should be determined according to the type of the tank, generally should be 1 to 4 minutes, and the tank should be promoted.
Mixed measures.
6.3.2.5 Adoption part
6.3.2.6 The choice of dissolved gas release device shall be determined according to the quality of oily sewage, treatment process and releaser performance.
The oily sewage is added before entering the dissolved gas reaction section, and a coagulant may be added in an appropriate amount.
Do not cause secondary pollution.
The size of the air floatation tank can be rectangular or circular.
The width ratio should be 3 to 4.
m/s.
Set.
The moving speed should be 1 to 5 m/min.
The basic process of air floatation is shown in Figure 3.
6.3.3 Dosing reaction
6.3.3.1 Coagulant should be
6.3.3.2 The reaction time of the dissolved gas reaction section should be 10-15 min.
6.3.3.3 The dosage and quantity of the dosage should be determined according to the influent water quality.
6.3.3.4 The chemical dissolution tank shall be preserved and shall be used in parallel and alternately.
6.3.4 Air floating pool
6.3.4.1 According to water
6.3.4.2 The width of each cell of the rectangular air floating pool shall be less than or equal to 4.5 m, long
6.3.4.3 The effective water depth of the rectangular air floating pool should be 2.0~2.5 m, and the super high should be greater than or equal to 0.4 m.
6.3.4.4 The residence time of sewage in the separation section of the air flotation tank should be less than or equal to 1 h.
6.3.4.5 The horizontal flow rate of sewage in a rectangular air floating tank should be less than or equal to 10 m
6.3.4.6 The air floatation tank shall be equipped with an automatic liquid level control device to ensure the proper position of the floating foam baffle
6.3.4.7 The end of the air floating pool shall be provided with a collecting tank and a waste oil storage tank.
6.3.4.8 The top of the air floating pool shall be provided with a scraping foam machine
6.3.4.9 A drain pipe shall be provided at the bottom of the air floating pool.
6.3.5 Fully dissolved air flotation and partially pressurized dissolved gas
6.3.5.1 Recommended full dissolved air flotation and partially pressurized dissolved air
Gas tank
Compressed air
Air floating pool
Figure 3 Basic process flow chart of fully dissolved air flotation and partially pressurized dissolved air flotation
6.3.5.2 Dosing agent. The variety and quantity of the agent should be determined according to the influent water quality. 25~35 mg/L of polymerized aluminum; 60~
The basic process of air floatation is shown in Figure 4.
80 mg/L; polymeric iron 15 ~ 30 mg/L; organic polymer coagulant 1 ~ 10 mg/L.
6.3.5.3 Coagulation reaction. Pipe mixer should be used, and no reaction chamber is available.
6.3.6 Partially refluxed dissolved air flotation
6.3.6.1 Recommended partial reflux dissolved gas
Reaction chamber water
Gas tank
Air floatation pool
Compressed air
Water
Figure 4 Basic flow chart of partial reflux dissolved air flotation
6.3.6.2 The reflux ratio is preferably 25% to 50% of the influent water. However, when the water quality is poor and the amount of water is not large, the reflux ratio may be appropriately increased.
40~
The stirring blade speed should be about 0.5 m/s.
6.3.6.3 Dosing. The variety and quantity of the agent should be determined according to the influent water quality. 15~25 mg/L of polymerized aluminum; aluminum sulfate
60 mg/L; polymeric iron 10 ~ 20 mg/L; organic polymer coagulant 1 ~ 8 mg/L.
6.3.6.4 Coagulation reaction. pipe mixing, resistance loss is less than or equal to 0.3 m; mechanical mixing
The mixing time should be 30 s. Mechanical reaction chamber (first-stage mechanical agitation), advection reaction chamber, cyclone reaction chamber or vortex reaction chamber water flow velocity
From 0.5 to 1.0 m/s to 0.3 to 0.5 m/s, the reaction time is 3 to 10 minutes.
6.4 coarse graining
The coarse granulation technique is suitable for pretreatment of dispersing oils and emulsified oils. The coarse granulation method can completely separate the oil beads of 5-10 μm in water, and the pair is 1~
Before the degreasing process, it utilizes the coalescence properties of coarse granulated materials to make fine oil particles in it
Oil is highly hydrophobic, has a large specific surface area, high strength and is easy to re
Segment, coalescing bed, porous material support layer.
0.6 MPa can be used.
Table 1 Supporting material grading table
Layer thickness/mm
6.4.1
The 2 μm oil beads have the best separation.
6.4.2 Coarse coalescers are usually located in gravity
The surface coalesces into larger oil particles or oil film, making it more advantageous for gravity removal.
6.4.3 The coalescing material should adopt a relative density greater than 1, a particle size of 3 to 5 mm, pro
Raw materials; should be determined according to the coalescence test.
6.4.4 Composition of coarse granulation degreasing device. shell, separation
6.4.5 The coalescing and degreasing device housing can be made of carbon steel for corrosion protection. Pressure bearing capacity should be calculated by process, generally
6.4.6 A cushion should be added under the coalescing bed. The supporting materials are generally pebbles, and their grading is shown in Table 1.
Particle size/mm
16~32 100
Medium 8~16 100
4~8 100
Total thickness H 300
6.4. When the relative density of the coalescing material is less than 1, a stainless steel grille and a pebble layer shall be provided on the upper part to prevent running materials. Pebble size selection
6.5.1 Filter
The area of a single pool should not exceed 50 m2. The influent oil content should be less than 30 mg/L.
Number (40% to 50%) and super high factors
A grid cover is provided at the nozzle; the bottom slope of the pool is about 0.005, and the slope is evacuated.
Door; but the backwash valve should be electric or liquid
The pool wall should be napped at the contact with the sand layer to avoid short-flow.
When the area is less than 25 m2, the pipe diameter is 40 mm; when the filter area is
Measures and appropriate ventilation, lighting and other measures.
It is advisable to choose a hydrophilic or oleophobic material with a certain mechanical strength and corrosion resistance.
15 min.
The filtration rate of fiber filter material can be up to 25 m/h, the backwashing strength can be less than 5 L/(m2·s), and the backwashing time should be controlled at 15-20 min.
It is 16 to 32 mm and the thickness is generally 0.3 m.
6.5 Filtering
6.5.1.1
6.5.1.2 Filter height according to the thickness of the filter layer, the height of the support layer, and the backwash filter expansion system
The height is generally between 3.5 and 4.5 m.
6.5.1.3 The bottom of the filter should be equipped with an emptying pipe
6.5.1.4 Each filter should be equipped with a head loss meter or water level gauge, sampling equipment, etc.
6.5.1.5 Manual valves are available for valves with a diameter less than 400 mm when the number of filter chambers is small.
Moving the valve.
6.5.1.6 Filtering
6.5.1.7 At the end of the main pipe of the water distribution system, an exhaust pipe should be installed as the filter
When the temperature is 25 to 100 m2, the diameter is 50 mm. The exhaust pipe extends out of the filter and a shut-off valve should be added at the top.
6.5.1.8 There should be 1 or 2 holes in each sealing channel.
6.5.1.9 The filter pipe gallery should have good waterproof and drainage
6.5.2 Filter material
6.5.2.1 Filter material
6.5.2.2 The sand filtration rate should be 8~10 m/h, the backwashing strength is 12~17 L/(m2·s), and the backwashing time should be
6.5.3 Lightweight filter media
6.6 Coagulation
6.6.
Commonly used coagulants in oily wastewater treatment include inorganic coagulants, organic coagulants and composite coagulants, which should be selected for different water quality.
The intermediate pipe of the equipment should not exceed 120 m.
The method is divided into hydraulic mixing and mechanical mixing.
And operating experience under similar conditions or through trials
There should be sufficient reaction time in the reaction tank, generally 10 to 30 min, to control the velocity gradient G during the reaction.
system
In order to control the dosage, the automatic drug delivery system should be used as much as possible.
The method should adopt feed-forward or feed-back single-factor self-controlled dru......
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