GB 25468-2010Emission standard of pollutants for magnesium and titanium 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 "Opinions of the State Council on the preparation of national main functional area planning" to protect the environment, prevent pollution, promote magnesium and titanium work

This standard is formulated for the advancement of production processes and pollution control technologies.

This standard specifies the limits, monitoring and monitoring requirements for water pollutants and atmospheric pollutants in the production process of magnesium and titanium industrial enterprises.

Water pollution and air pollution prevention and management in magnesium and titanium industrial enterprises. To promote the coordinated development of regional economy and environment, and promote the adjustment of economic structure

The transformation of the overall economic growth mode guides the development direction of magnesium and titanium industrial production processes and pollution control technologies. This standard specifies water pollution.

Special emission limits.

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

Magnesium and titanium industrial enterprises emit odor pollutants and environmental noises, and the corresponding national pollutant discharge standards are applied to identify solid wastes.

Handling and disposal of national solid waste pollution control standards.

This standard is the first release.

Since the implementation of this standard, the discharge of water and air pollutants from industrial enterprises in magnesium and titanium has been implemented in this standard, and the comprehensive discharge of sewage is no longer implemented.

Standards (GB 8978-1996), "Integrated Emission Standards for Air Pollutants" (GB 16297-1996) and "Inorganic Furnace Air Pollutants

Relevant provisions in the Standards for Release (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. Guiyang Aluminum and Magnesium Design and Research Institute, Environmental Standards Research Institute of the Ministry of Environmental Protection, China Ruilin Engineering Technology Co., Ltd.

Company (formerly Nanchang Nonferrous Metallurgy Design and Research Institute).

This standard was approved by the Ministry of Environmental Protection on September 10,.2010.

This standard has been implemented since October 1,.2010.

This standard is explained by the Ministry of Environmental Protection.

Magnesium and titanium industrial pollutant discharge standards

1 Scope of application

This standard specifies the emission limits, monitoring and monitoring requirements for water pollutants and atmospheric pollutants in industrial enterprises of magnesium and titanium, and the implementation of standards.

Relevant regulations such as supervision.

This standard is applicable to the management of water pollutants and atmospheric pollutants in magnesium and titanium industrial enterprises, as well as the construction projects of magnesium and titanium industrial enterprises.

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

This standard does not apply to industries such as magnesium and titanium regeneration and calendering, nor to non-characteristic production processes attached to magnesium and titanium enterprises.

Device.

This standard applies to the discharge of pollutants permitted by law; the location of newly established sources of pollution and the existing sources of pollution in special protected 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 Waste, Law of the People's Republic of China on Environmental Impact Assessment, etc.

The relevant provisions of laws, regulations and rules are 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 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 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 11914-1989 Determination of chemical oxygen demand in water - Dichromate 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

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 55-2000 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 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/T 399-2007 Determination of chemical oxygen demand in water quality - Rapid digestion spectrophotometric method

HJ 482-2009 Determination of sulphur dioxide in ambient air - Formaldehyde absorption - s.

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

Magnesium and titanium industrial enterprises magnesium and titanium industry

Magnesium industrial enterprises refer to silicon thermal magnesium smelting enterprises and dolomite mines that produce magnesium metal from dolomite; titanium industrial enterprises refer to

Enterprises that produce titanium sponge from titanium concentrate or high titanium slag or titanium tetrachloride as raw materials, including high titanium slag, titanium tetrachloride, titanium sponge, etc.

As the manufacturer of the final product.

3.2

Characteristic production process and device

Refers to the production process of magnesium, titanium metal mining, mineral processing, smelting and related equipment.

3.3

Existing enterprise existing facility

Refers to the magnesium or titanium industrial enterprises or production facilities that have been completed and put into operation before the date of implementation of this standard.

3.4

New enterprise new facility

Refers to the construction of new, rebuilt and expanded magnesium and titanium production facilities approved by the environmental impact assessment document from the date of implementation of this standard.

3.5

Effluent volume

Refers to the amount of wastewater discharged by a production facility or enterprise outside the legal boundaries of the enterprise, including various effluxes that are directly or indirectly related to production.

Waste water (such as domestic sewage, cooling wastewater, plant boilers and power station drainage).

3.6

Benchmark effluent volume per unit product

Refers to the upper limit of wastewater discharge for the production unit of magnesium and titanium products used to verify the concentration of water pollutants.

3.7

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.

3.8

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.

3.9

Excess air coefficient

Refers to the ratio of the actual air volume to the theoretical air demand during the operation of the industrial furnace.

3.10

Enterprise boundary

Refers to the legal boundary of magnesium and titanium industrial enterprises. If the boundary cannot be determined, it means the actual boundary.

3.11

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.

3.12

Direct discharge

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

3.13

Indirect discharge

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

4 Pollutant emission control requirements

1 pH value 6～9 6～9

Corporate wastewater discharge

2 suspended matter 70 70

3 Chemical oxygen demand (CODCr) 100 180

4 Petroleum 8 15

5 total nitrogen 20 40

6 total phosphorus 1.5 3.0

7 ammonia nitrogen 15 25

8 total copper 0.5 1.0

9 total chromium 1.5 workshop or production facility wastewater discharge

10 hexavalent chromium 0.5

Unit product

Baseline displacement

Magnesium smelting enterprise/(m3/t) 1.5

Displacement measurement position and pollutant discharge

Consistent monitoring position

Production of titanium sponge/(m3/t) 80 from titanium concentrate

Production of titanium sponge/(m3/t) 10 from refined TiCl4

Production of titanium tetrachloride/(m3/t) 17 from high titanium slag

Production of high titanium slag/(m3/t) 0.5 from titanium concentrate

4.1.2 As of January 1,.2012, existing enterprises implement the water pollutant discharge limits specified in Table 2.

4.1.3 From October 1,.2010, 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 limit pollutant discharge monitoring position direct emission indirect discharge

1 pH value 6～9 6～9

Corporate wastewater discharge

2 suspended matter 30 70

3 Chemical oxygen demand (CODCr) 60 180

4 Petroleum 3 15

5 total nitrogen 15 40

6 total phosphorus 1.0 3.0

7 ammonia nitrogen 8 25

8 total copper 0.5 1.0

9 total chromium 1.5 workshop or production facility wastewater discharge

10 hexavalent chromium 0.5

Unit product

Baseline displacement

Magnesium smelting enterprise/(m3/t) 1.0

Displacement measurement position and pollutant discharge

Consistent monitoring position

Production of titanium sponge/(m3/t) 55 from titanium concentrate

Production of titanium sponge/(m3/t) 8 from refined TiCl4

Production of titanium tetrachloride/(m3/t) 12 from high titanium slag

Production of high titanium slag/(m3/t) 0.2 from titanium concentrate

4.1.4 According to the requirements of environmental protection work, the density of land development has been higher, the environmental carrying capacity has begun to weaken, or the environmental capacity is relatively

Areas that are small, ecologically fragile, prone to serious environmental pollution, and require special protection measures should be strictly controlled by enterprises.

For pollutant discharge behavior, enterprises in the above-mentioned regions implement the special discharge limits for water pollutants specified in Table 3.

Table 3 Special limits for water pollutants

Unit. mg/L (except pH)

No. Pollutant project limit pollutant discharge monitoring position direct emission indirect discharge

1 pH 6.5 ~ 8.5 6 ~ 9

Corporate wastewater discharge

2 suspended matter 10 30

3 Chemical Oxygen Demand (CODCr) 50 60

4 Petroleum 1.0 3.0

5 total nitrogen 15 15

6 total phosphorus 0.5 1.0

7 ammonia nitrogen 5.0 8.0

8 total copper 0.2 0.5

9 total chromium 1.0 workshop or production facility wastewater discharge

10 hexavalent chromium 0.2

Unit product benchmark

Displacement

Magnesium smelting enterprise/(m3/t) 0.5

Displacement measurement position and pollutant discharge

Consistent monitoring position

Production of titanium sponge/(m3/t) 35 from titanium concentrate

Production of titanium sponge/(m3/t) 6 from refined TiCl4

Production of titanium tetrachloride/(m3/t) 8 from high titanium slag

Production of high titanium slag with titanium concentrate as raw material/(m3/t) 0.1

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.

4.1.5 The concentration limit of water pollutant discharge is applicable to the case where the actual displacement of the unit product is not higher 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 discharge of water pollutant according to formula (1).

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

The 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 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 reference concentration of water pollutants to water.

YQ

Where. rho base - water pollutant reference water 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.

1 sulfur dioxide 0.5

2 particles 1.0

3 chlorine gas 0.02

4 Hydrogen chloride 0.15

4.2.5 In the production process after the completion of the environmental protection acceptance of the existing enterprise production and construction projects, the competent environmental protection department responsible for supervision shall respond

The environmental quality of sensitive areas around residential, teaching, medical, etc. is monitored. The specific monitoring scope of the construction project is environmental impact assessment.

Determined surrounding sensitive areas; existing enterprises that have not conducted environmental impact assessments are monitored by the environmental protection authorities responsible for supervision.

According to the characteristics and laws of the enterprise's sewage discharge and local natural and meteorological conditions, it is determined by reference to the relevant environmental impact assessment technical guidelines. Ground

The local government shall be responsible for the environmental quality of its jurisdiction and take measures to ensure that the environmental conditions meet the requirements of environmental quality standards.

4.2.6 Production processes and installations that produce atmospheric pollutants must establish local or integral gas collection systems and centralized purification treatment devices, and

Discharge through the exhaust pipe that meets the requirements. The height of all exhaust pipes should be no less than 15 m (the height of the exhaust pipe emitting chlorine should not be less than 25 m).

When there is a building within a radius of.200 m around the exhaust pipe, the height of the exhaust pipe should be higher than the highest building by more than 3 m.

4.2.7 The reference excess air coefficient of the kiln is 1.7, and the atmospheric pollutant emission concentration of the measured kiln should be converted into the reference excess air coefficient row.

Put the concentration. Production facilities should adopt reasonable ventilation measures and should not intentionally dilute emissions. The product base of other production facilities is not specified in the country.

Before the quasi-discharge amount, the measured concentration is used as the basis for judging whether or not the standard is reached.

5 Pollutant monitoring requirements