HJ 863.2-2017Technical specification for application and issuance of pollutant permit non-ferrous metal metallurgy industry - aluminum smelting (English PDF)

3.1 Aluminum smelting pollutant emission unit aluminum smelting unit

Refers to the use of bauxite as raw materials to produce alumina and aluminum oxide as raw materials to produce electrolytic aluminum smelting business or production facilities Shi.

3.2 Permitted emission limits permitted emission limits

Refers to the allowable pollutants discharged by pollutant discharge units as specified in the discharge permit and the maximum discharge concentration and the maximum discharge amount.

3.3 Special periods special periods

Refers to the national and local deadlines for compliance planning and other relevant environmental management requirements, the pollutant discharge of sewage units There are special requirements of the period, including the heavy polluted weather during the period and winter prevention period and so on.

4.1 General principles

Sewage units should be in accordance with the requirements of this standard should be in accordance with the requirements of this standard in the sewage permit management information platform to declare the system Fill in the "sewage permit application form" in the corresponding information form. Fill in the system drop-down menu does not include the local environmental protection If the competent department has stipulated that it needs to fill in a report or the pollutant discharging entity considers it necessary to fill in a report, it may add the contents by itself.

Provincial environmental protection departments in accordance with environmental quality requirements to improve the management of the increase should be entered in the sewage permit management Information platform to declare the system "with the nuclear power of local environmental protection department increased management content" column.

When submitting the application information, the pollutant discharge unit should assess the current situation of pollution discharge and environmental management and put forward the current environmental problems Rectification measures, and fill in the sewage permit management information platform to declare the system "corrective measures" column.

The basic situation of the sewage disposal units should be reported according to the actual situation and the authenticity, legality and completeness of the application materials submitted Negative legal liability.

4.2 Sewage unit basic information

The basic information of the pollutant discharge unit should fill in the name of the unit, the zip code, whether it is put into production, the date of production, the place of production and operation Heart longitude, latitude and longitude of the center of production and operation, whether the location belongs to the key area, whether there is an EIA approval document and number, Whether there are local governments for the violation of the project identification or filing documents and symbols, whether the total amount of major pollutants distribution plan documents and symbols, the total amount of particulate matter indicators (t/a), total sulfur dioxide indicators (t/a), nitrogen oxides (as NO2 total) (T/a), total COD (t/a), total ammonia (t/a), total fluoride Indicators (t/a) (only for electrolytic aluminum), the remaining items (if any) shall be reported by the enterprises themselves...

4.3 Main products and capacity

4.3.1 General principles

In reporting the main products and capacity, select "aluminum smelting." Sewage units should fill out the requirements of this standard sewage permit management information platform to declare the system on the main production list Yuan, the main process, production facilities, production facilities number, facility parameters, product name, production capacity and measurement units, set Year of birth and other options and other information.

4.3.2 The main production unit the main production units are required, the specific classification is as follows.

a) Alumina production unit

1) Sintered alumina production unit. raw material preparation unit, lime firing and lime milk preparation unit, clinker burning single Element, Dissolution and Silica residue separation unit, Red mud separation and washing unit, Decomposition filtration unit, Evaporation unit, Aluminum hydroxide filtration and roasting unit, alumina storage and packing unit, red mud yard;

2) Bayer alumina production unit. raw material preparation unit, lime firing (if any) and lime milk preparation unit, dissolved and silicon residue separation unit, red mud separation and washing unit, decomposition filter unit, evaporation unit, aluminum hydroxide filtration and roasting Unit, alumina storage and packing unit, red mud yard;

3) United Method alumina production unit. raw material preparation unit, lime firing and lime milk preparation unit, dissolution and silicon slag Separation unit, red mud separation and washing unit, clinker burning unit, decomposition filter unit, evaporation unit, aluminum hydroxide filter and roasting unit, alumina storage and packing unit, red mud yard.

b) Electrolytic Aluminum Production Unit. Raw Material Unit, Electrolysis Unit, Casting Unit, Electrolyte Processing Unit, Anode Assembly and Polar processing unit.

4.3.3 The main process the main process is required, the specific requirements are as follows.

a) Alumina. Sintering, Bayer, Combined.

b) Electrolytic aluminum. Molten salt electrolysis.

4.3.4 Production facilities

Production facilities are divided into required and optional items, the specific requirements are as follows.

a) Alumina

1) Sintering process for the production of alumina. the required items for the storage and handling of raw materials, reclaimer, homogenization library, raw mill, ash machine, Lime furnace (kiln), clinker kiln, clinker system, aluminum hydroxide roaster, alumina warehouse, oxidation Aluminum silo, others are optional items;

2) Bayer process production of alumina. Required items for the storage and handling of raw materials, reclaimer, homogenization, raw mill, lime furnace (Kiln) (if any), ash machine, molten salt furnace (if any), aluminum hydroxide roaster, alumina warehouse, Alumina silo, others are optional items;

3) United Method for the production of alumina. the required items for the storage and handling of raw materials, reclaimer, homogenization, raw mill, lime furnace (Kiln) (if any), soot machine, clinker kiln, clinker system, aluminum hydroxide roaster, alumina Warehouse, Alumina silo, others are optional items.

b) Electrolytic aluminum. The required items are alumina storage, electrolyzer, mixing furnace, casting unit, crusher, residual pressure off machine, Phosphorus iron ring pressure off, phosphorus iron ring cleaning machine, in (workers) frequency induction furnace, the other optional.

c) This standard has not yet provided for, but emissions of industrial waste gas or discharge of toxic and hazardous air pollutants, and a clear country

4.3.5 Production Facilities Number

Production facilities number is required, the specific requirements are as follows.

a) If the production facility has the internal production facility number of the sewage disposal unit, fill in the corresponding number;

b) If no production facilities within the sewage treatment unit production facilities number, according to "on the thermal power, paper industry and Beijing Tianjin, Hebei pilot urban elevated source pollutant discharge permit management notice "Annex 4" fixed sources of pollution (water, air) Coding rules (Trial) "number and fill in.

4.3.6 Facilities parameters

Facilities parameters are divided into required and optional items, the specific requirements are as follows.

a) Alumina. Required parameters for the name, design value, unit of measurement (including air volume, evaporation, pressure, temperature Degrees, etc.), others are optional items;

b) Electrolytic aluminum. Required items are parameter name, design value, unit of measurement, etc. (including air volume, pressure, temperature, etc.

Solution tank fill current intensity, current efficiency), the other is optional.

4.3.7 Product Name

Product name is required, the specific requirements are as follows.

a) Alumina products. Alumina;

b) Electrolytic aluminum products. electrolytic aluminum (primary aluminum).

4.3.8 Production capacity and measurement units

Production capacity and measurement units are required, the production capacity of the main product design capacity. Capacity and production units of measurement all ten thousand t/a.

4.3.9 Design Year of production

Design production time is required, according to the environmental impact assessment documents and approval or local government recognition of non-compliance items - 5 -Set or record the file to determine the annual production time to fill in.

4.3.10 Others

Other optional items, sewage units need to explain the contents, you can fill in.

4.4 The main raw and auxiliary materials and fuel the main raw and auxiliary materials and fuel fill in the contents include the type, the name of raw and auxiliary materials, raw and auxiliary materials composition, the name of the fuel, Fuel composition, design annual usage, other, etc., the specific requirements are as follows.

a) types. divided into raw and auxiliary materials, fuel;

b) raw and auxiliary material name.

1) Alumina. raw materials such as bauxite, accessories include sodium carbonate, sodium hydroxide, lime/limestone, coal and other raw materials;

2) electrolytic aluminum. raw materials, including alumina, accessories include aluminum fluoride, cryolite, anode and so on.

c) raw and auxiliary materials components. accessories sulfur, poisonous and harmful components and accounting for aluminum carbon anodes sulfur element ratio, Fluoride salts such as aluminum fluoride, cryolite and the like;

d) Name of fuel.

1) Alumina. clinker firing kiln fuel for the coal, the other as. natural gas, gas, liquefied petroleum gas, etc .;

2) electrolytic aluminum. natural gas, liquefied petroleum gas, electricity and so on.

e) fuel composition. coal and fuel should be reported ash, sulfur, volatile, calorific value; natural gas, gas, liquefied petroleum Gas should be reported sulfur content, calorific value;

f) Design annual usage. The design annual usage is the annual usage of primary and secondary fuels that match the approved production capacity in units of Million t/a or 10,000 m3/a;

g) Others. If the pollutant discharge unit needs to explain the content, can fill in;

h) The above a) -f) is required, g) is optional.

4.5 Production of sewage nodes, pollutants and pollution control facilities

4.5.1 General principles

Sewage emissions Sewage links, pollutants and pollution control facilities, including production facilities corresponding to the production of pollution links, types of pollutants, Emission forms (organized, unorganized), pollution control facilities, feasible or not, discharge number, discharge setting Whether the norms and the type of discharge.

Wastewater includes wastewater category, type of pollutant, location of discharge, pollution control facilities, whether it is viable technology, emissions Port number, the discharge port is set norms and the type of discharge.

4.5.2 Exhaust gas

4.5.2.1 Pollution production process

Alumina and electrolytic aluminum production and sewage links are as follows.

a) Alumina. raw fuel storage, crushing, screening, lime furnace (if any), lime milk preparation, clinker burning Into the kiln (if any), molten salt furnace (if any), aluminum hydroxide roaster, alumina storage and transportation and packaging;

b) Electrolytic aluminum. storage and transport of alumina and fluoride salts, electrolyzers, mixers, electrolyte crushing, residual anode assembly systems - 6 -Extreme shot blasting, residual crushing, residual crushing, electrolyte cleaning, steel shot blasting, phosphorus iron ring off, guide rod cleaning, Residual handling, in (workers) frequency induction furnace.

4.5.2.2 Types of pollutants

The type of pollutants should be determined according to GB 13271 and GB 25465, see Table 1. There are local emission standards, according to the ground Party discharge standards to determine.

4.5.2.3 Governance Facilities

a) Alumina. The names of treatment facilities should be filled in with dust removal facilities, desulfurization facilities and denitrification facilities;

b) Electrolytic aluminum. Name of treatment facility Electrolytic flue gas should be entered Alumina adsorption dry purification facilities, dust removal facilities, desulfurization Facilities and so on.

4.5.2.4 Pollution control process

a) Alumina. The pollution control process includes dust removal facilities (three electric field electrostatic precipitators, four electric field electrostatic precipitators, Five electric field electrostatic precipitator; bag filter; electric bag composite precipitator; others), desulfurization facilities, denitrification facilities;

b) Electrolytic aluminum. Pollution control process Fill in the electrolytic flue gas including alumina adsorption dry purification facilities, dust removal facilities (bags Dust collector; other), desulfurization facilities.

4.5.3 Wastewater

4.5.3.1 Category

a) Alumina production includes production wastewater (leaking small amounts of alkali-containing and suspended material liquids, various kilns and equipment circulating cold but the system drainage, including laboratory waste water and chemical waste water and other auxiliary production wastewater) and domestic sewage;

b) Electrolytic aluminum production, including the production of waste water (casting cooling, air compressor, anode assembly, fan and other equipment, circulating cooling system System drainage, laboratory wastewater and soft water preparation wastewater and other auxiliary production wastewater) and domestic sewage.

4.5.3.2 Types of pollutants

The type of pollutants should be determined according to GB 25465, see Table 1. With local emission standards, according to local emission standards set.

4.5.3.3 Governance facilities

The names of management facilities should fill in domestic sewage treatment facilities, production wastewater treatment facilities.

4.5.3.4 Pollution control process

Pollution control process is divided into a treatment (filtration, precipitation, cooling), secondary treatment (biological contact oxidation process, Activated sludge method, A/O, A2/O, others),.

4.5.3.5 Fate and Emission Law

Aluminum smelting sewage discharge units should be clear where and where the discharge rules.

Emission to the outside is divided into no outside; discharged to the plant integrated sewage treatment station; direct access to the sea; direct access to rivers, lakes, - 7 -such as water environment; into the city sewers (re-entry rivers, lakes, libraries); into the city sewer (re-enter the coastal waters);

Enter the city sewage treatment plant; enter other units; industrial wastewater treatment facilities; other (including reuse, etc.).

Emission law is divided into continuous discharge, steady flow; continuous discharge, flow instability, but there are periodic laws; Continuous Emissions, flow instability, but regular, and does not belong to the cyclical law; Continuous emissions, the flow is not stable, are impact Type Emissions; Continuous Emissions, Unstable and irregularly flowed but not impulsive emissions; Intermittent Emissions, Emissions During Period Discontinuous discharge, unstable flow during discharge, but periodic pattern; discontinuous discharge, no discharge during discharge Stable, but regular, and does not belong to the non-periodic law; intermittent emissions, discharges during the instability, are impact type Discharge; intermittent discharge, unstable and irregular flow during discharge, but not impact discharge.

4.5.4 Discharge port setting requirements

According to the "Technical requirements of the standardization of sewage outfall (Trial)", as well as emission standards imple...