GB 28661-2012Emission standard of pollutants for the iron ore mining and mineral processing industry (English PDF)

3.1 Mining

Mining iron ore in open pit or underground mining processes in iron mines and polymetallic mines with iron ore as the main product

The process of stone.

3.2 Dressing

The iron ore is selected by re-election, magnetic separation, flotation and a combined process to obtain iron concentrate.

3.3 Existing companies

Before the date of implementation of this standard, an iron ore mining and production enterprise that has passed the examination and approval of the production or environmental impact assessment documents has been completed.

Production facilities.

3.4 New Enterprise

From the date of implementation of this standard, the environmental impact assessment document approved the construction, reconstruction and expansion of iron ore mining and industrial construction

Set up the project.

3.5 Mining wastewater

Wastewater generated and discharged during the mining process, including drainage from underground mining areas or goafs, open pit mining

Drainage water discharged from the area or post-harvest area, waste water discharged from waste rock yards (including dumping sites).

3.6 Mine acid wastewater

Untreated, mining wastewater with a pH of less than 6.

3.7 Mineral processing wastewater

Wastewater generated and discharged during ore dressing, including iron ore in re-election, magnetic separation, flotation and its combined process

Waste water, as well as wastewater discharged from washing, crushing and concentrating plants, tailings ponds, etc.

3.8 Direct discharge

The behavior of the pollutant discharge unit directly discharging water pollutants to the environment.

3.9 Indirect emissions

The discharge of water pollutants by the sewage disposal unit to the public sewage treatment system.

3.10 Public sewage treatment system

Collect wastewater through sewage pipelines, provide wastewater treatment services for more than two sewage disposal units, and drain water

Enterprises or institutions that meet the relevant emission standards, including urban sewage treatment plants of various sizes and types, and regions (including

Wastewater treatment plants, such as industrial parks, development zones, industrial agglomerations, etc., should have a wastewater treatment level of two or two on.

3.11 Displacement

The amount of wastewater discharged by a production facility or enterprise outside the legal boundaries of the enterprise, including direct or indirect relationship with production

Various types of effluent wastewater (such as domestic sewage, cooling wastewater, plant boilers and power station drainage).

3.12 Base product displacement

The upper limit of the wastewater discharge amount of the production unit product specified for the approval of the discharge concentration of water pollutants.

3.13 Standard status

The temperature is 273K, the pressure is 101325Pa, and the concentration of atmospheric pollutants specified in this standard refers to the standard state.

Dry air value.

3.14 Factory (field) area boundary

The legal boundary of the iron ore mining and selection enterprise mining site, concentrating plant, dumping site, waste rock yard, tailings pond, etc. If the boundary cannot be determined,

It refers to the actual boundary.

4.1 Water pollutant emission control requirements

4.1.1

From October 1,.2012 to December 31,.2014, existing enterprises implement the water pollutant discharge limits specified in Table 1.

Table 1 Limits of water pollutant discharge concentration of existing enterprises and base product displacement of unit products

Unit. mg/L (except pH)

Serial number pollutant project

Limit

Pollutant discharge supervision

Control position

Direct discharge

Indirect discharge of mining wastewater ore dressing wastewater

Acidic wastewater non-acid wastewater flotation wastewater

Reselection and magnetic

Waste water

1 pH 6~9 6~9 6~9 6~9 6~9

Enterprise wastewater discharge

Gap

2 suspended matter 100 100 150 100 300

4.1.3

From October 1,.2012, the newly-built enterprise shall implement the water pollutant discharge limit specified in Table 2.

Table 2 Limits of water pollutant discharge concentration of new enterprises and base product displacement

Unit. mg/L (except pH)

Serial number pollutant project

Limit

Pollutant discharge supervision

Control position

Direct discharge

Indirect discharge of mining wastewater ore dressing wastewater

Acidic wastewater non-acid wastewater flotation wastewater

Reselection and magnetic

Waste water

1 pH 6~9 6~9 6~9 6~9 6~9

Enterprise wastewater discharge

Gap

2 suspended matter 70 70 100 70 300

4.1.6

The discharge of mining water pollutants is based on the measured concentration as the basis for determining whether the emissions meet the standards. Concentration of mineral water pollutants

The limit applies to the case where the actual displacement of the unit product is not higher than the unit discharge of the unit product. If the actual displacement of the unit product

Exceeding the unit product displacement, the measured water pollutant concentration shall be converted into the reference discharge of water pollutant according to formula (1).

Emission concentration, and the discharge concentration of water pollutants as the basis for determining whether the emission is up to standard. Product output and row

The water volume statistics cycle is one business day.

Production of two or more products at the same time in the production facilities of the enterprise, applicable to different emission control requirements or pollution in different industries

In the case of dye discharge standards and the discharge of sewage from production facilities, the emission standards shall be implemented.

Strict concentration limits, and according to formula (1), the water pollutants reference discharge discharge concentration.

Base = rhorho ×sum iiQ (1)

In the formula.

Base rho - water pollutant baseline discharge discharge concentration, mg/L;

Total Q -- the total amount of measured drainage, m3;

iY -- the output of a certain product, t;

Base iQ - the base product displacement of a product, m3/t;

Real rho -- measured water pollutant concentration, mg/L.

If the ratio of total Q to sum iiQY is less than 1, then the measured concentration of water pollutants is used as the basis for determining whether the emission is up to standard.

according to.

4.2 Air Pollutant Emission Control Requirements

4.2.1

From October 1,.2012 to December 31,.2014, existing enterprises implement the air pollutants listed in Table 4

Release limit.

Table 4 Limits of atmospheric pollutant emission concentration of existing enterprises

Unit. mg/m3

Pollutant project production process or facility limit pollutant emission monitoring position

Ore transport, reloading, mining, crushing, screening, 50 workshops or production facilities exhausts 4.2.2 As of January 1,.2015, existing enterprises will implement the atmospheric pollutant emission limits specified in Table 5.

4.2.3

As of October 1,.2012, new enterprises will implement the air pollutant emission limits specified in Table 5.

Table 5 Limits of atmospheric pollutant emission concentration of newly-built enterprises

Unit. mg/m3

Pollutant project production process or facility limit pollutant emission monitoring position

Ore transport, reloading, mining, crushing, screening, 20 workshops or production facilities exhausts 4.2.4 According to the requirements of environmental protection work, the density of land development has been high, and the environmental carrying capacity has begun to weaken, or

Areas with small environmental capacity, fragile ecological environment, and prone to serious environmental pollution problems requiring special protection measures,

The company should strictly control the pollutant discharge behavior of enterprises, and the enterprises in the above regions shall implement the special discharge of atmospheric pollutants as specified in Table 6.

Limit.

The geographical scope and time for the implementation of special emission limits for atmospheric pollutants shall be administered by the administrative department of environmental protection of the State Council or the province.

Level people's government regulations.

Table 6 Special emission limits for atmospheric pollutants

Unit. mg/m3

Pollutant project production process or facility limit pollutant emission monitoring position

Ore transport, reloading, mining, crushing, screening of particulate matter concentrator 10 workshop or production facility exhaust 4.2.5 Unorganized emissions of corporate air pollutants shall be subject to the limits specified in Table 7.

Table 7 Unconformity emission limits of atmospheric pollutants in existing and new enterprises

Unit. mg/m3

Contaminant project production process or facility limit

Particulates concentrating plant, dumping site, waste rock yard, tailings pond 1.0 4.2.6 Environmental protection in charge of supervision in the production process of the existing enterprise production and construction projects completed and accepted

The administrative department shall monitor the ambient air quality in sensitive areas such as residential, teaching, medical and other uses. Construction

The specific monitoring scope of the project is the surrounding sensitive area determined by environmental impact assessment; the existing enterprise that has not conducted environmental impact assessment

Industry, the scope of monitoring is the environmental protection administrative department in charge of supervision, according to the characteristics and laws of corporate sewage discharge and local self-

However, factors such as meteorological conditions are determined by reference to the relevant environmental impact assessment technical guidelines. Local governments should respond to the environmental quality of their jurisdiction

Responsible for taking measures to ensure that environmental conditions meet environmental quality standards.

4.2.7

The production process equipment for generating atmospheric pollutants must establish a local gas collection system and a centralized purification treatment device.

Standard emissions. All exhaust cylinders should be at least 15m high. When there is a building within a radius of.200m around the exhaust pipe, the exhaust pipe is high

The degree should also be higher than the highest building by more than 3m.

4.2.8

Before the national standard for the production of unit product is not specified, the measured concentration is used to determine the emission of atmospheric pollutants.

No basis for compliance.

5.1 General requirements for pollutant monitoring

5.1.1

Sampling of waste water and waste gas from enterprises shall be monitored according to the type of pollutants monitored.

Locations, with wastewater and waste gas treatment facilities, should be monitored after treatment facilities. Must be set at the pollutant discharge monitoring position

Permanent drain outlet sign.

5.1.2

Requirements for the installation of automatic monitoring equipment for pollutant discharge in newly built enterprises and existing enterprises, in accordance with relevant laws and

Implementation of the Measures for the Administration of Dynamic Monitoring.

5.1.3

The frequency, sampling time and other requirements for monitoring the discharge of pollutants of ent...