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The lead and zinc smelting industry pollution control technology policy guidance
Date:2013-12-02 16:36:55

To carry out the environmental protection law of the People's Republic of China, the prevention and control of environmental pollution, ecological safety and human health, promote technological progress, environmental protection to make the "lead and zinc smelting industry pollution control technology policy", "the exploitation of oil and gas pollution control technology policy" and "pharmaceutical industry pollution control technology policy" and so on three guidance document, are hereby issued and executed for for reference.

Lead and zinc smelting industry pollution control technology policy

(announcement in 2012, the 18th 2012)

The 2012-03-07

One, the general

(a) to carry out the environmental protection law of the People's Republic of China "and other laws and regulations, the prevention and control of environmental pollution, ecological safety and human health, promote the lead and zinc smelting industrial production process and pollution control technology, this technology policy.

(2) the technology policy for the guidance document, for all the relevant units in construction projects and the existing enterprise's management, design, construction, production, scientific research and other work in reference to use; This technology policy is suitable for lead and zinc smelting industry, including in lead and zinc native ore as raw material and scrap metal as raw material of lead and zinc smelting industry renewable industry.

(3) lead and zinc smelting industry should increase the strength of the industrial structure adjustment and upgrading of the product, the reasonable layout planning industry, further improve the level of industry concentration and scale, to speed up the elimination of low level backward production capacity, a capacity equivalent dose or replacement.

(4) in the water source protection area, basic farmland area, vegetable base, nature reserves, important ecological function areas, breeding base, the urban population concentration areas such as environmental sensitive area and the protection zone, to strictly limit the new (change, expanding) lead and zinc smelting and regeneration projects; Area there are existing enterprise, should timely adjust planning, to promote its governance and halt production or emigration.

(5) lead and zinc smelting industry construction and expansion of the project should be preferred primary standard or more advanced clean production process, the production process of redevelopment project should not be lower than the secondary cleaner production standards. Enterprises discharge of pollutants should be stable, enterprises in the key areas in the discharge of waste gas and waste water of heavy metals such as lead, arsenic, cadmium quantity should be significantly reduced, by 2015, the comprehensive utilization of solid waste (or if) rate to reach 100%.

(6) of heavy metal pollution prevention and control work, lead and zinc smelting industry must adhere to the principle of "reduction, recycling, harmless", implement clean production as the core, with an emphasis on heavy metal pollutants emission reduction, supported by effective pollution prevention and control technology, the comprehensive prevention and control technology of protection for risk prevention.

(7) encourages enterprises according to the requirements of circular economy and ecological industry, adopting joint lead and zinc smelting, form a complete set of comprehensive recovery and product related extension, improve the utilization rate of resources, reduce the discharge of wastes.

(eight) waste lead-acid batteries and dismantling, should according to the requirement of the waste battery pollution control technology policy.

(9) to take effective measures to prevent the lead and zinc smelting industry in the process of enterprise production environment and health risk. To build new () change, enlarge and existing enterprises, should be based on local natural condition and environment sensitive areas of bearing, scientifically set up the protection distance.

Second, the cleaner production

(a) to prevent environmental risks, for each batch of mineral raw materials shall be in full composition analysis, strictly control the raw material of mercury, arsenic, cadmium, thallium, beryllium and other harmful elements. Mercury-free smelters recycling equipment, should not use mercury content higher than 0.01% of the raw material. Mercury waste residue as the lead and zinc smelting ingredients when using, should be recycled mercury, and then to lead and zinc smelting.

(2) in the mineral raw materials, such as transportation, storage and preparation process, airtight etc measures should be taken to prevent material Yang. Raw materials, intermediate products and finished products is unfavorable open piled up.

(3) encourage the use of cleaner production in first and second level standard of lead short process oxygen-enriched smelting process, should be eliminated within 3 to 5 years do not accord with standard of cleaner production of lead and zinc smelting process, equipment.

(4) should improve the lead and zinc smelting process of lead, mercury, arsenic, cadmium, thallium, beryllium and sulfur elements such as recovery, minimize emissions.

(5) lead products and leaded components should be component and then sign; Waste products and lead, zinc, lead, arsenic, mercury, cadmium, and thallium harmful elements such as material, should be in-place recycling, identification, according to the relevant provisions of the solid waste management.

(6) should be used in wet process, the anode mud of lead and zinc electrolysis produce processing, recovery of gold, silver, antimony and bismuth, lead, copper and other metals, waste shall be disposed according to the requirements of solid waste management.

(7) using regeneration of waste metals, lead and zinc smelting should control the chlorine content in raw materials, the flue gas should be used in quenching, such as activated carbon adsorption, cloth bag dust removal purification technology, strictly control the generation of dioxin and emissions.

Third, prevention and control of atmospheric pollution

(a) lead and zinc smelting gas negative pressure condition should be taken to collection, processing. For emissions that cannot fully closed point, USES the strict control of exhaust gas collecting device unorganized emissions. According to the weather conditions, the use of key measures, such as sprinkler, prevent dust pollution.

(2) encourages a microporous membrane filter material, such as the new fabric composite materials and other high efficient filter, bag filter processing heavy metals such as lead, zinc particles of flue gas.

(3) smelting sulfur dioxide in flue gas should be recycled, the production of sulfuric acid and other products. Encourages an adiabatic evaporation dilute acid purification, double contact method such as acid production technology. Acid tail gas should be taken in addition to the acid mist purification measures, such as national standards.

(4) encourage using LvHuaFa, mercury iodide method of advanced and efficient recycling and processing mercury gas flue gas to take off the mercury technology.

(5) lead electrolysis and wet zinc smelting, electrolyzer acid mist purification treatment should be taken; Zinc leaching tank and tank shall form a complete set of waste collection, gas-liquid separation or mist device.

(6) to send out the process of the gas that endanger human body health, should be taken to curb, organized and purification steps such as collection, improve the operating region and factory environment air quality.

Four, solid waste disposal and comprehensive utilization

(a) should be in accordance with the provisions of laws and regulations, carry out solid waste management and hazardous waste identification work. Do not reuse the lead and zinc smelting slag identified as hazardous waste, should be safe landfill after stabilizing treatment. Slag field seepage prevention and clean-up measures should be taken to establish seepage wastewater collection pool, prevent leachate pollution of soil, surface water and groundwater.

(2) encourage harmless melting water quenching slag as raw materials, raw materials, products, subgrade materials building materials production, to reduce cover an area of, improve the waste of resources comprehensive utilization.

(3) occurring in the process of lead smelting slag lead oxide, yellow slag, slag, slag lead regeneration should adopt oxygen-enriched smelting or mineral processing methods, such as recycling metals such as lead, zinc, copper, antimony.

(4) wet smelting zinc leaching residue, appropriate USES oxygen-enriched smelting and fuming furnace process first after the recovery of zinc, lead, copper and other metal recycling, or through direct lead smelting process. Hot acid leaching residue should send lead smelting system, or entrust qualified units after the recovery of valuable metals such as lead, silver.

(5) smelting gas collecting dust smoke (powder), in addition to containing mercury, arsenic, cadmium, should return to smelting burden system closed, or directly by wet method to extract the valuable metal.

(6) flue gas produced by the dilute acid washing mud, heavy metals such as lead, arsenic acid should be recovery of valuable metals, mercury sludge should be timely recovery of mercury. Production sewage sludge, collection pool sediment as well as wastewater treatment sludge recycling waste, should be sealed storage, after stabilization and solidification, safety landfill disposal.

Five, the prevention and control of water pollution

(a) and regeneration process emissions of lead and zinc smelting wastewater should be recycled, water circulation rate should be above 90%, encourage all production waste water recycling.

(2) contain lead, mercury, cadmium, arsenic, nickel, chromium and other heavy metal waste water, should according to the provisions of the national discharge standards, produced in the workshop or points for treatment or recycle production facilities, shall not contain different kinds of heavy metal content or mixed wastewater dilute concentration difference is big.

(3) the production early rain, the ground flush water, slag landfill leachate should collect and sewage treatment, recycling or discharging standard.

(4) production waste water containing heavy metal, can be in accordance with the requirements for the water quality and treatment, respectively using chemical precipitation method, biological method (agent), adsorption method, electrochemical method and the technology of membrane separation and single or combined treatment.

(5) to the storage and use of toxic substances workshop and the existence of leakage risk device, should set the anti-seepage accident wastewater collection pool; The initial rainwater collection pool seepage control measures should be taken.

Six, encourage the development of new technology

Encourages the research, development, the promotion of the following technologies:

(a) environmental friendly oxygen-enriched flash smelting lead and short process continuous smelting process, liquid direct reduction of high lead slag technology; Direct leaching and zinc plate, electrolytic industrialized technology for a long period of time; Lead and zinc regeneration and comprehensive recovery of new technology and equipment.

(2) of the flue gas efficiently collecting device, depth of removal of heavy metals such as lead, mercury, thallium in flue gas of the technology and equipment, small particle size of heavy metal smoke efficient removal techniques and equipment.

Wet gas sulphuric acid (3) technology, low concentration acid and sulfur dioxide flue gas desulfurization technology of recycling; Acid mist exhaust gas, washing dirty acid purification recycling technology and equipment.

(4) from solid waste recycling lead, zinc, cadmium, mercury, arsenic, selenium, marketable component technology, preparation technology, high added value product solid waste using wet zinc smelting iron slag emission reduction and resource utilization iron, zinc leaching residue smelting technology and equipment.

(5) efficient removal of lead, zinc, cadmium, mercury, arsenic, etc. The depth of the wastewater treatment technology, film, biological and electrolytic device such as a set of efficient separation and reuse techniques and etc.

(6) with independent intellectual property rights of lead and zinc smelting with pollutants treatment process and the whole process of pollutants detection of automatic control technology, new equipment and devices;

(7) of heavy metal pollution repair technology of water and soil environment, the focus is on lead and zinc smelter wastewater outfalls, slag field downstream restoration of water and soil.

Seven, pollution prevention and control of management and supervision

(a) should be in accordance with the relevant laws and regulations and the provisions of national and local emission standards, to supervise and monitor pollution situation of the enterprise, set up online monitoring device and network with the monitoring system of the environmental protection department; On a regular basis to the enterprise the surrounding air, water and soil environment quality condition monitoring, understand the impact of enterprise production on the environment and health.

(2) the enterprises should strengthen the consciousness of social responsibility, in order to strengthen the management of environmental risk, environmental risk management system and the heavy metal pollution accident emergency plan and regular exercise.

(3) enterprise should guarantee the pollution control of lead and zinc smelting facilities and production facilities at the same time supporting construction and normal operation. Emergency accidents or malfunction caused by heavy metal pollution control facilities is offline, should press emergency plans take immediate steps to correct it.

(4) shall be in accordance with the relevant regulations, carry out clean production work, improve the level of pollution prevention and control technology, ensure a safe environment.

(5) after the relocation or close to the ground for the development and utilization of again, should according to use risk assessment, and relevant measures in accordance with provisions.

 
 

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