GB 26451-2011Emission standards of pollutants from rare earths industry (English PDF)

Foreword

To implement the "Environmental Protection Law of the People's Republic of China", "Water Pollution Prevention and Control Law of the People's Republic of China"

Dyeing Prevention and Control Law, the Marine Environmental Protection Law of the People's Republic of China, and the State Council's Decision on Implementing the Scientific Outlook on Development and Strengthening Environmental Protection

And other laws, regulations and the relevant requirements of the state to strengthen the prevention and control of heavy metal pollution, protect the environment, prevent pollution, and promote the production of rare earth industrial

The development of art and pollution control technologies, the development of this standard.

This standard specifies the limits, monitoring and monitoring requirements for water pollutants and atmospheric pollutants in rare earth industrial enterprises, and is applicable to rare earth industrial enterprises.

Water pollution and air pollution prevention and management. In order to promote the coordinated development of regional economy and environment, promote economic restructuring and economic growth.

The transformation of the formula guides the development direction of the rare earth industrial production process and pollution control technology. This standard specifies the special emission limits for water pollutants.

The pollutant discharge concentrations in this standard are all mass concentrations.

Rare-earth industrial enterprises emit odor pollutants, environmental noise and boiler emissions of atmospheric pollutants.

The identification, treatment and disposal of solid wastes are subject to national solid waste pollution control standards.

This standard is the first release.

From the date of implementation of this standard, the emission control of water pollutants and atmospheric pollutants of rare earth industrial enterprises shall be implemented in accordance with the provisions of this standard, no longer

Implementation of the "Integrated Wastewater Discharge Standard" (GB 8978-1996), "Integrated Emission Standards for Air Pollutants" (GB 16297-1996) and "Work

Relevant regulations in the Standard for Emission of Air Pollutants in Furnace and Kiln (GB 9078-1996).

Local provincial people's governments may formulate local pollutant discharge standards for pollutants not specified in this standard;

For the specified pollutants, local pollutant discharge standards that are stricter than this standard can be formulated.

This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection.

This standard is mainly drafted by. China Enfei Engineering Technology Co., Ltd. (China Nonferrous Engineering Design and Research Institute), Ministry of Environmental Protection

Institute of Environmental Standards, Beijing Research Institute of Nonferrous Metals, Baotou Rare Earth Research Institute, Sichuan Rare Earth Industry Association, Inner Mongolia Baotou Steel Rare Earth High-Tech

Technology Co., Ltd., Baotou Huamei Rare Earth High-Tech Co., Ltd., Jiangxi Tungsten Group Co., Ltd., and Luoyang Rare Earth New Materials Co., Ltd.

Division, Inner Mongolia Autonomous Region Rare Earth Industry Association participated.

This standard was approved by the Ministry of Environmental Protection on January 18,.2011.

This standard has been implemented since October 1,.2011.

This standard is explained by the Ministry of Environmental Protection.

Rare earth industrial pollutant discharge standard

1 Scope of application

This standard specifies the limits, monitoring and monitoring requirements for water pollutants and atmospheric pollutants in rare earth industrial enterprises, as well as the implementation of standards.

Supervision and other relevant regulations.

This standard applies to the management of water pollutants and atmospheric pollutants in existing rare earth industrial enterprises, as well as the ring of rare earth industrial construction projects.

Environmental impact assessment, environmental protection facility design, completion environmental protection acceptance and management of water pollutants and atmospheric pollutants after commissioning.

This standard does not apply to rare earth material processing enterprises (or workshops, systems) and non-characteristic production processes and equipment attached to rare earth industrial enterprises.

Set.

This standard applies to the discharge of pollutants permitted by law. Sites for newly established pollution sources and tubes for existing pollution sources in special protection areas

Li, in accordance with the Law of the People's Republic of China on the Prevention and Control of Air Pollution, the Law of the People's Republic of China on the Prevention and Control of Water Pollution,

Environmental Protection Law, Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Wastes, Law of the People's Republic of China on Prevention and Control of Radioactive Pollution,

The relevant provisions of laws, regulations and rules such as the Environmental Impact Assessment Law of the People's Republic of China shall be implemented.

The water pollutant emission control requirements specified in this standard are applicable to enterprises directly or indirectly discharging water pollutants outside their legal boundaries.

behavior.

2 Normative references

The contents of this standard refer to the following documents or their terms.

GB/T 6768 analytical method for trace uranium in water

GB/T 6920-1986 Determination of pH value of water-based glass electrode method

GB/T 7466-1987 Determination of total chromium in water

GB/T 7467-1987 Determination of hexavalent chromium in water - Diphenyl hydrazide spectrophotometric method

GB/T 7475-1987 Determination of copper, zinc, lead and cadmium - Atomic absorption spectrophotometric method

GB/T 7484-1987 Determination of fluoride in water quality - Ion selective electrode method

GB/T 7485-1987 Determination of total arsenic in water - Spectrophotometric method

GB/T 11224 Analytical method for strontium in water

GB/T 11743 gamma-ray spectrum analysis method for radionuclides in soil

GB/T 11893-1989 Determination of total phosphorus in water - Ammonium molybdate spectrophotometric method

GB/T 11894-1989 Determination of total nitrogen in water - Alkaline potassium persulfate digestion - UV spectrophotometric method

GB/T 11901-1989 Determination of suspended solids by weight method

GB/T 15432-1995 Determination of total suspended particulate matter in ambient air

GB/T 16157-1996 Determination of particulate matter in fixed pollution source exhaust gas and sampling method of gaseous pollutants

Water quality -- Determination of petroleum and animal and vegetable oils - Infrared photometric method

GB/T 18871 Basic standards for ionizing radiation protection and radiation source safety

HJ/T 27-1999 Determination of hydrogen chloride in fixed source emissions - Mercury thiocyanate spectrophotometric method

HJ/T 30-1999 Determination of chlorine in fixed source exhaust gases - methyl orange spectrophotometric method

HJ/T 42-1999 Determination of nitrogen oxides from fixed source s

HJ/T 43-1999 Determination of nitrogen oxides from fixed source s

HJ/T 55 Technical Guidelines for the Monitoring of Unorganized Emissions of Air Pollutants

HJ/T 56-2000 Determination of sulphur dioxide in fixed source s

HJ/T 57-2000 Determination of sulfur dioxide in fixed source exhaust gases

HJ/T 67-2001 Determination of Fluoride in Fixed Atmospheric Sources Ion Selective Electrode Method

HJ/T 70-2001 Determination of chemical oxygen demand of high chlorine waste water

HJ/T 75 Technical Specifications for Continuous Monitoring of Flue Gas Emissions from Fixed Sources (Trial)

HJ/T 132-2003 Determination of chemical oxygen demand of high chloride wastewater - Potassium iodide potassium permanganate method

HJ/T 195-2005 Determination of ammonia nitrogen in water quality

HJ/T.199-2005 Determination of total nitrogen in water -- Gas phase molecular absorption spectroscopy

HJ 479-2009 Determination of ambient air oxynitride (nitrogen oxide and nitrogen dioxide)

HJ 480-2009 Determination of ambient air fluoride - Filter membrane sampling fluoride ion selective electrode method

HJ 481-2009 Determination of ambient air fluoride - Lime filter paper sampling fluoride ion selective electrode method

HJ 482-2009 Determination of sulphur dioxide in ambient air - Formaldehyde absorption - Para-elyl aniline spectrophotometric method

HJ 483-2009 Determination of sulphur dioxide in ambient air - Tetrachlorohydroxide absorption - Pararosaniline spectrophotometric method

HJ 487-2009 Determination of fluoride in water quality - Zirconium sulphonate

Water quality - Determination of fluoride - Fluorescence spectrophotometric method

HJ 535-2009 Determination of ammonia nitrogen in water quality - Nexus reagent spectrophotometric method

HJ 536-2009 Determination of ammonia nitrogen in water quality - Salicylic acid spectrophotometric method

HJ 537-2009 Determination of ammonia nitrogen in water quality - Distillation - Neutralometric titration

HJ 544-2009 Determination of sulfuric acid mist of fixed pollution sources - Ion chromatography (interim)

HJ 547-2009 Determination of chlorine in fixed source pollution - Iodometric method (provisional)

HJ 548-2009 Determination of Hydrogen Chloride from Fixed Pollution Sources - Silver Nitrate Capacity Method (Provisional)

HJ 549-2009 Determination of hydrogen chloride in air and exhaust gases - Chromatography (interim)

Measures for the Automatic Monitoring and Control of Pollution Sources (Order No. 28 of the State Environmental Protection Administration)

Measures for the Administration of Environmental Monitoring (Order No. 39 of the State Environmental Protection Administration)

3 Terms and definitions

The following terms and definitions apply to this standard.

3.1

Rare earth rare earths

The lanthanides of the atomic number from 57 to 71 in the periodic table, namely lanthanum (La), cerium (Ce), praseodymium (Pr), yttrium (Nd), yttrium (Pm),

钐 (Sm), 铕 (Eu), 钆 (Gd), 铽 (Tb), 镝 (Dy), 钬 (Ho), 铒 (Er), 铥 (Tm), 镱 (Yb), 镥 (Lu)

A general term for 17 elements of 钪(Sc) and 39 钇(Y) with an atomic number of 21, usually represented by the symbol RE, which is a chemical phase.

a set of elements.

3.2

Rare earths industry

Refers to the production of rare earth concentrates or rare earth enrichment, rare earth compounds, rare earth metals, rare earth alloys of any one or several products.

3.3

Rare earths mining

Refers to the process of extracting rare earth ore from the deposit by open pit mining or underground mining. This standard does not include the use of solution leaching directly

The process of obtaining an ionic rare earth leach liquor from leaching or heap leaching of a rare earth deposit.

3.4

Rare earths mineral processing

Refers to the separation of useful minerals from gangue or harmful substances according to the physicochemical properties of useful minerals and gangue in rare earth ore.

The process of earth concentrate and the process of chemically producing rare earth enrichment in rare earth leach liquor obtained from solution leaching.

3.5

Rare earths metallurgy

Using rare earth concentrates or rare earth-containing materials as raw materials, containing at least one step in the process of decomposition extraction, grouping, separation, metal and alloy preparation

The process of producing rare earth compounds, rare earth metals or rare earth alloys.

3.6

Decomposition and extraction

The process of producing a mixed rare earth compound by using a rare earth concentrate or a rare earth-containing material as a raw material, by calcination or decomposition by acid or alkali.

3.7

Rare earth group separation and purification

Separating and purifying by using mixed rare earth compounds as raw materials by solvent extraction, ion exchange, extraction chromatography, redox, crystal precipitation, etc.

Means to produce a single rare earth compound or rare earth enrichment (including rare earth chloride, rare earth nitrate, rare earth carbonate, rare earth phosphate, rare

Process of oxalate, rare earth hydroxide, rare earth oxide, etc.). This standard includes washing and calcining insoluble rare earth salt compounds.

The process of preparing rare earth oxides or other compounds.

3.8

Rare earth metal and alloy production process rare earths metal and its alloy preparation

Rare earth metals and rare earth alloys are prepared by electrolysis, metal thermal reduction or other methods using single or mixed rare earth compounds as raw materials

the process of.

3.9

Rare earth oxide

A generic term for a compound formed by the combination of a rare earth element and an oxygen element, usually represented by the symbol REO.

3.10

Rare earth ferrosilicon alloy

A silicon-containing iron alloy composed of a rare earth element and other elements such as calcium, manganese, aluminum, or the like.

3.11

Characteristic production process and device

Refers to the production process and equipment of rare earth mining, mineral processing and smelting, and the pollutant treatment processes and devices related to these processes.

3.12

Existing enterprise existing facility

Refers to the rare earth industrial enterprises and production facilities that have been approved for production or environmental impact assessment documents before the date of implementation of this standard.

3.13

New enterprise new facility

Refers to the construction, renovation and expansion of rare earth industrial construction projects approved by the environmental impact assessment document from the date of implementation of this standard.

3.14

Enterprise boundary

Refers to the legal boundary of rare earth industrial enterprises. If the boundary cannot be determined, it means the actual boundary.

3.15

Standard condition

It refers to the state when the temperature is 273.15 K and the pressure is 101 325 Pa. The limits of atmospheric pollutant emission concentrations specified in this standard are based on standards.

The dry gas in the state is the standard.

3.16

Effluent volume

Refers to the amount of wastewater discharged by a rare earth industrial production facility or enterprise outside the legal boundary 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).

3.17

Exhaust volume

Refers to the amount of exhaust gas from the rare earth industrial production process and equipment discharged into the ambient air, including those directly or indirectly related to the production process and equipment.

Exhaust gas.

3.18

Benchmark effluent volume per unit product

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

3.19

Unit product basis exhaust volume banchmark exhaust volume per unit product

Refers to the upper limit of exhaust emissions of production unit products specified for the approval of atmospheric pollutant emission concentrations.

3.20

Exhaust height

Refers to the height from the ground level where the exhaust cylinder (or its main building construction) is located to the outlet of the exhaust.

3.21

Uranium and thorium dust

Refers to dust with natural strontium and uranium content greater than 1 . .

3.22

Direct discharge

Refers to the behavior of pollutant discharge units directly discharging water pollutants into the environment.

3.23

Indirect discharge

Refers to the behavior of sewage units discharging water pollutants to public sewage treatment systems.

3.24

Public wastewater treatment system

Refers to collecting waste water through sewage pipelines, providing wastewater treatment services for more than two sewage disposal units and draining can reach relevant rows

Enterprises or institutions required by the standards, including urban sewage treatment plants of various scales and types, areas (including various industrial parks, development zones,

Industrial gathering places, etc.) Wastewater treatment plants, etc., should have a wastewater treatment level of two or more.

4 Pollutant emission control requirements

1 pH value 6～9 6～9

Corporate wastewater discharge

2 suspended matter 70 100

3 Fluoride (in F) 10 10

4 Petroleum 5 5

5 Chemical Oxygen Demand (COD) 80 100

6 total phosphorus 3 5

7 total nitrogen 50 70

8 ammonia nitrogen 25 50

9 total zinc 1.5 1.5

10 钍, total uranium 0.1

Workshop or production facility wastewater discharge

11 total cadmium 0.08

12 total lead 0.5

13 total arsenic 0.3

14 total chromium 1.0

15 hexavalent chromium 0.3

Unit product base

Quasi-discharge

Mineral processing (in terms of raw ore) m3/t 1.0

Displacement measurement position and pollutant discharge supervision

Control position is the same

Decomposition extraction (in terms of REO) m3/t 30

Extraction grouping, separation (in terms of REO) m3/t 35

M3/t 8 made of metal and alloy

4.1.2 As of January 1,.2014, existing enterprises will implement the water pollutant discharge limits specified in Table 2.

4.1.3 From October 1,.2011, 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)

No. Pollutant Project Emission Limits Pollutant Emission Monitoring Location Direct Emissions Indirect Emissions

1 pH value 6～9 6～9

Corporate wastewater discharge

2 suspended matter 50 100

3 Fluoride (in F) 8 10

4 Petroleum 4 5

5 Chemical Oxygen Demand (COD) 70 100

6 total phosphorus 1 5

7 total nitrogen 30 70

8 ammonia nitrogen 15 50

9 total zinc 1.0 1.5

10 钍, total uranium 0.1

Workshop or production facility wastewater discharge

11 total cadmium 0.05

12 total lead 0.2

13 total arsenic 0.1

14 total chromium 0.8

15 hexavalent chromium 0.1

Unit product benchmark

Displacement

Mineral processing (in terms of raw ore) m3/t 0.8

Displacement measurement position and pollutant discharge

Monitoring location is the same

Decomposition extraction (in terms of REO) m3/t 25

Extraction grouping, separation (in terms of REO) m3/t 30

M3/t 6 made of metal and alloy

4.1.4 According to the requirements of environmental protection work, the density of land development is high, the environmental carrying capacity begins to weaken, or the water environment capacity is small.

In areas where the ecological environment is fragile and prone to serious water pollution problems and special protection measures are required, the pollution of enterprises should be strictly controlled.

Emissions behavior, the enterprises in the above regions implement the special discharge limits for water pollutants specified in Table 3.

The geographical scope and time for the implementation of special discharge limits for water pollutants shall be governed by the environmental protection administrative department of the State Council or the provincial people's government.

set.

Table 3 Special limits for water pollutants

Unit. mg/L (except pH)

No. Pollutant Project Emission Limits Pollutant Emission Monitoring Location Direct Emissions Indirect Emissions

1 pH value 6～9 6～9

Corporate wastewater discharge

2 suspended matter 40 50

3 Fluoride (in F) 5 8

4 Petroleum 3 4

5 Chemical Oxygen Demand (COD) 60 70

6 total phosphorus 0.5 1

7 total nitrogen 20 30

8 ammonia nitrogen 10 25

9 total zinc 0.8 1.0

10 钍, total uranium 0.1

Workshop or production facility wastewater discharge

11 total cadmium 0.05

12 total lead 0.1

13 total arsenic 0.05

14 total chromium 0.5

15 hexavalent chromium 0.1

Unit product benchmark

Displacement

Mineral processing (based on raw ore) m3/t 0.6

Displacement measurement position and pollutant discharge

Monitoring location is the same

Decomposition extraction (in terms of REO) m3/t 20

Extraction grouping, separation (in terms of REO) m3/t 25

Metal and alloy preparation m3/t 4

4.1.5 For the discharge of sewage containing radioactive materials, in addition to the implementation of this standard, it shall also comply with the provisions of GB 18871.

4.1.6 The concentration limit of water pollutant discharge is applicable to the case where the actual displacement of the unit product is not greater than the unit discharge of the unit product. If unit

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

The emission concentration and the water concentration of the water pollutants are used as the basis for determining whether the emission is up to standard. Product production and displacement statistics cycle

For a working 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 national pollutant discharge standards in different industries

In the case of quasi-mixed wastewater from production facilities, the most stringent concentration limits specified in the emission standards shall be implemented and

Equation (1) Converts the discharge concentration of water pollutants from the baseline.

YQ

Where. rho base - water pollutant baseline discharge concentration, mg/L;

Q total - total drainage, m3;

iY -- the output of the i-th product, t;

iQ base - the unit product base displacement of the i-th product, m3/t;

rho实--Measured water pollutant discharge concentration, mg/L.

4.1.7 For the extraction grouping and separation process, when producing 1 to 4 kinds of rare earth products with a purity of more than 99%, the base product displacement should be

The limits in Tables 1 to 3 are to be performed; when 5 to 9 rare earth products with a purity of 99% or more are produced, the reference discharge per unit product shall be Table 1 to Table.

3 times the median limit; when producing more than 10 kinds of rare earth products with a purity of more than 99%, the base product displacement should be Table 1 to Table 3.

2 times the median limit; when producing a fluorescent grade or equivalent to a fluorescent grade quality...

END: Draft Version (GB 26451-2011)