HJ 1120-2020Technical specification for application and issuance of pollutant permit - General wastewater treating process (English PDF)

3.1 Mining and selecting pollutant discharging unit

Refers to GB/T 4754 Mining Industry B in Coal Mining and Washing Industry 06, Oil and Gas Mining Industry 07 China Land Petroleum Development Mining 0711 and land natural gas mining 0721, ferrous metal mining and dressing 08, non-ferrous metal mining and dressing 09, non-metallic minerals Mining pollutant discharge units covered by mining industry10 and other mining industry12.

3.2 Producting pollutant discharging unit

Refers to the pollutant discharge units covered in GB/T 4754 Manufacturing C and Electricity, Heat, Gas and Water Production and Supply D.

3.3 Servicing pollutant discharging unit

Refers to GB/T 4754 Transportation, Warehousing Industry G Passenger Railway Station, Freight Railway Station (yard), Passenger Bus Station, Freight hubs (stations), passenger ports, airports, other warehousing other than dangerous goods storage, accommodation and catering industry H, residential service Sewage discharge units covered by social work in service, repair and other service industries O, education P, health and social work Q.

3.4 Key pollutant emission unit

Refers to the pollutant discharge units that are included in the "List of Classified Management of Permits for Discharge of Fixed Pollution Sources".

3.5 Simplified pollutant emission unit

Refers to the pollutant discharge units that are included in the "List of Classification Management of Permits for Discharge of Fixed Pollution Sources" to simplify management.

3.6 Permitted emission limits

Refers to the maximum discharge concentration (rate) and maximum discharge volume of pollutants that are allowed to be discharged by the pollutant discharge unit specified in the pollution discharge permit.

4.1 Requirements for basic information of pollutant discharge units

4.1.1 General principles

The pollutant discharge unit shall fill in the corresponding letter in the application system of the national pollution discharge permit management information platform in accordance with the requirements of this standard.

interest. The local ecological and environmental authorities with the right to issue approval may add the need to specify in the pollution discharge permit in accordance with local regulations and fill in the "local ecological environment with the right of issuance" in the declaration and issuance system of the national pollution discharge permit management information platform the management content added by the competent authority" column.

4.1.2 Basic information of pollutant discharge units

The basic information of the pollutant discharge unit includes the name of the unit, whether it needs to be corrected, the type of industry, the management category of pollution discharge permit, whether the date of commissioning and commissioning, the latitude and longitude of the center of the production and operation site, whether the location is an environmentally sensitive area, and the environmental impact assessment review Approval number (record number), local government's identification of illegal projects or document number, mining license number, document number of main pollutant total distribution plan, total chemical oxygen demand indicator (t/a), total ammonia nitrogen indicator (t/a), others Total pollutant indicators (if any), etc.

When the pollutant discharge unit reports the latitude and longitude of the center of the production and operation site, the coal mining pollutant discharge unit reports the mining well (mine) field the latitude and longitude of the center of the coal mine, coal preparation plant and sewage treatment station, land oil mining pollutant discharge unit fills in the mining scope, oil and gas centralized treatment the latitude and longitude of the center of the station and the sewage treatment station, and the land-based natural gas mining and sewage disposal unit shall fill in the mining scope, natural gas treatment plant, purification Longitude and latitude of the center of the plant and sewage treatment station, the mining and processing of ferrous metal, non-ferrous metal, non-metallic mines and other mining industries the polluter shall fill in the mining area and the longitude and latitude of the waste rock field and the center of the concentrator.

When the pollutant discharge unit fills in the "Pollution Discharge Permit Management Category" on the national pollutant discharge permit management information platform, it shall Select the management category in the Directory of Classification Management of Pollution Discharge Permits for Certain Pollution Sources; when filling in the "industry category", select the management category according to GB/T 4754 Select the main industry and the sub-industry as "General Water Treatment Process".

4.1.3 Main products and production capacity

When the pollutant discharge unit fills in the "main products and production capacity", fill in the main production unit, main production content and parameters, specific the content is shown in Table 1.

4.1.4 Main auxiliary materials

(1) Name

Report the chemicals added in the process of mining, mineral processing (purification) and wastewater treatment.

(2) Designed annual usage and measurement unit the designed annual usage is the annual usage matching the production capacity, and the unit of measurement is indicated.

(3) Other

If the pollutant discharge unit needs to explain, you can fill in it.

4.1.5 Pollution production and discharge nodes, pollutants and pollution control facilities

(1) General principles Wastewater includes waste water category, pollutant type, discharge destination, discharge law, pollution control facilities and parameters, whether it is Available technologies, discharge port numbers, whether discharge port settings are standardized and discharge port types.

(2) Types of wastewater and pollutants the types of waste water from coal mining and processing units include mine water (acidic, non-acidic), mine water (acidic, non-acidic), and Dry water, coal preparation wastewater, polluted rainwater and domestic sewage, etc.

The types of wastewater discharged by oil and gas mining units include produced water, fracturing flowback fluid, downhole operation wastewater, and oil and gas treatment Process wastewater, oil tank cutting water, equipment flushing water, circulating cooling water sewage, polluted rainwater and domestic sewage, etc.

Ferrous metal mining/non-ferrous metal mining/non-metallic mining/other mining and mining sewage disposal unit waste water category includes mine Well water, mine water gushing, waste rock leaching water, beneficiation wastewater, tailings pond drainage, tailings pond leachate, polluted rainwater and life Sewage etc.

The pollutant items are the pollutants in the wastewater discharge standards implemented by the pollutant discharge unit. Where local emission standards require Local emission standards are strictly enforced.

(3) Pollution control facilities

a) Physical and chemical treatment. oil separation, air flotation, precipitation, coagulation, filtration, neutralization, advanced oxidation, adsorption, disinfection, membrane filtration Filtration, ion exchange, electrodialysis, etc.

b) Biochemical treatment. hydrolysis acidification, anaerobic, aerobic, anoxic and aerobic (A/O), anaerobic, anoxic and aerobic (A2/O), sequence Batch activated sludge (SBR), oxidation ditch, biological aerated filter (BAF), biological contact oxidation, moving biological bed reactor (MBBR), membrane bioreactor (MBR), etc.

The parameters of each sewage treatment facility shall be reported according to the design value.

The number of the treatment facility can be filled in with the internal number of the sewage disposal unit or according to HJ 608.

See Table 2, Table 3, Table 4 and Table 5 for details.

4.1.6 Drawing requirements

The basic information of the sewage disposal unit shall also include the process flow chart and general layout of the mining, mineral processing and sewage treatment facilities.

The general layout plan should at least include the main facilities, public and auxiliary facilities, sewage treatment stations, etc., and indicate the waste water outlet, the location of the wastewater discharge outlet and rainwater discharge outlet of the workshop or workshop treatment facility, and the direction and discharge destination of the rainwater and wastewater collection and transportation pipelines shall be given.

If the local ecological and environmental authorities with the right to issue approval have other regulations or the pollutant discharge unit deems it necessary, it may add requirements for drawings.

4.2 Corresponding discharge outlets of production and discharge links and methods for determining permitted discharge limits

4.2.1 Production and drainage links

4.2.1.1 Waste water outlet

Fill in the latitude and longitude coordinates of the discharge port, discharge destination, discharge law, etc. for the waste water discharge port. Waste water is directly discharged into the environment, but also the name of the receiving natural water body, the function target of the water body, the latitude and longitude coordinates of the receiving natural water body should be filled in, corresponding to the sewage discharge into the river the name and number of the port, and the number of the reply. If wastewater is discharged into the environment indirectly, the name of the centralized sewage treatment facility and the waste Water pollutants and their discharge limits.

4.2.1.2 Rainwater drain

For the rainwater discharge outlet, fill in the discharge outlet number, the latitude and longitude coordinates of the discharge outlet, the discharge destination, the information of the water body and the point of inflow Latitude and longitude coordinates. For the number of the rainwater discharge outlet, fill in the internal number of the sewage discharge unit. If there is no internal number, the "YS three-digit stream "Water number" (such as YS001) is numbered and filled in.

4.2.2 Permitted emission limits

4.2.2.1 General principles

The permitted emission limit includes the permitted emission concentration of pollutants and the permitted emission volume. The permitted emissions are the annual permitted emissions. year Permissible discharge volume refers to the maximum discharge volume of pollutants that a pollutant discharge unit is allowed to discharge for 12 consecutive months. Local ecology with the right to issue According to environmental management requirements (such as dry season, etc.), the environmental authority can refine the annual permitted discharge volume on a quarterly and monthly basis.

The main discharge outlets of wastewater allow discharge concentration and discharge volume, and general discharge outlets only allow discharge concentration.

According to national or local pollutant emission standards, the permitted emission concentration is determined in accordance with the strict principle. According to this standard the calculation method of the allowable discharge amount and the total control index of the key pollutants that are decomposed and implemented in accordance with the law to the pollutant discharge unit shall be strictly determined.

Emissions. Pollutant discharging units that have obtained the approval opinions of environmental impact assessment documents after January 1, 2015 (inclusive), are permitted to discharge the quantity should also meet the requirements of the environmental impact assessment approval opinions.

The total amount control indicators include the total amount control indicators and environmental the total amount control indicators determined in the approval of the environmental impact assessment document, the total amount control indicators specified in the existing the total amount control indicators determined by the paid use and trading of pollution rights and other local governments or the competent department of ecological environment and pollution permits the total quantity control index confirmed by the applicant in a certain form.

The pollutant discharge unit shall specify the calculation process of the permitted discharge limit applied for in the declaration system of the pollution discharge permit management information platform.

If the emission concentration promised by the pollutant discharge unit is stricter than the standard requirement, it shall be stipulated in the pollutant discharge permit.

4.2.2.2 Permitted emission concentration

The concentration limits of wastewater pollutants discharged by the coal mining and dressing industry pollutants are implemented in GB 20426.

The concentration limits of wastewater pollutants discharged by the iron ore mining and dressing industry pollutants are implemented in GB 28661.

The concentration limits of pollutants in wastewater discharged by the magnesium and titanium mining and dressing industries shall be subject to GB 25468.

The concentration limits of waste water pollutants discharged by the copper, nickel, and cobalt mining and dressing industries shall comply with GB 25467.

The concentration limits of pollutants in wastewater discharged by lead and zinc mining and dressing companies shall comply with GB 25466.

The concentration limits of wastewater pollutants discharged by the aluminum mining and dressing industry pollutants are implemented in GB 25465.

The concentration limits of waste water pollutants discharged by the mining and dressing industry of tin, antimony and mercury shall comply with GB 30770.

The concentration limits of waste water pollutants discharged by the pollutant discharge units of the rare earth mining and dressing industry shall implement GB 26451.

The permitted discharge concentration limits of wastewater pollutants from other pollutants discharge units shall comply with GB 8978.There are other standards for wastewater discharge Strictly determine if required. If the industry's wastewater pollutant discharge standards are released, follow their regulations.

If the national or local management documents or environmental impact assessment approval documents have clear requirements for the discharge of wastewater from the pollutant discharge unit, it shall be strictly determined.

Where there are stricter emission standards, follow the regulations.

The production facilities of the pollutant discharge unit produce more than two products at the same time, which can be applied to different emission control requirements or water pollution in different industries in the case of waste water discharge standards and mixed treatment and discharge of sewage generated by production facilities, the strictest concentration limits specified in the emission standards shall be implemented.

4.2.2.3 Permitted emissions

The main discharge outlets of mining pollutant discharge units specify the permitted discharge of chemical oxygen demand and ammonia nitrogen, and the main workshop or workshop treatment equipment for wastewater discharge outlets, the five heavy metals of lead, mercury, chromium, cadmium and arsenic should also be clarified based on the heavy metal factors contained in the wastewater.

Permitted emissions. If the competent departm...