The printing industry is doing these 10 points and is no longer afraid of environmental supervision.
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The environmental protection inspectors have one round after another, shutting down, limiting production, fines, and rectifying enterprises in batches. Dongguan will shut down 5,000 scattered and polluting enterprises this year, and the country will shut down 170,000 scattered and polluting enterprises. Many provinces have successively introduced coal-fired, biomass boilers to zero, summer production limits, and packaging and printing companies to stop production of VOCs. Then, how can printing houses, paper mills, and carton factories avoid the "swords" of environmental protection inspections? Do not be afraid of doing the following.
One, Implementing environmental protection policies
1. In line with national industrial policies and local industry access conditions, in line with the relevant requirements for eliminating backward production capacity.
2. Strictly implement the environmental impact assessment system and the “three simultaneous” system.
3. Handle the discharge permit according to law and discharge the pollutant according to the license content.
Two, the workshop environment
1. The enterprise should replace the open production process with a closed production process, and it is preferred to replace the intermittent production process with continuous and automated production processes to minimize the contact frequency between materials and the outside world.
2. Adopt advanced conveying equipment. The material pump of the shield pump, the diaphragm pump, the magnetic pump and the like is used to replace the existing water jet vacuum pump to transport the liquid material. For special reasons, compressed air, vacuum suction, etc. are used to transport flammable and toxic and harmful chemical materials, and the exhaust gas should be collected and treated uniformly. Vacuum equipment such as Roots vacuum pumps and oil-free reciprocating vacuum pumps are preferred. If the process requires the use of a jet vacuum pump or a water ring vacuum pump, a reactor-type or tank-type closed vacuum pump should be used, and the circulating fluid should be equipped with a cooling system.
3. Optimize the way of feeding and discharging. The reactor should be fed with bottom feed or dip tube. The liquid added at the top should be filled with conduit. The feeding and discharging should be sealed or sealed. If it is not sealed, vacuum should be used. Collected to the exhaust gas treatment system for processing.
4. Improve the efficiency of condensation recovery. The solvent should be multi-stage gradient condensation method in the distillation process to improve the recovery efficiency of the organic solvent, and it is preferred to use a heat-transfer equipment such as a spiral wound tube or a plate condenser.
5. Adopt advanced centrifugal and pressure filtration equipment. In addition to special process requirements, enterprises should replace open-end centrifuges with closed centrifuges, multi-functional integrated filter presses, and dark-flow plate and frame filter presses. The mother liquor tail gas contains flammable and toxic and harmful components. Collect and process.
6, using advanced drying equipment. Enterprises should use closed drying equipment or advanced drying equipment such as flash dryers and spray dryers. The volatile solvent generated during the drying process needs to be condensed to recover the active ingredients and then connected to the exhaust gas treatment system. The presence of odor pollution should be effectively treated.
7. Standardize the storage of liquid materials. Chemical (oil-containing) storage tanks should be equipped with a recovery system or an exhaust gas collection and treatment system. In the process of loading and unloading volatile acid and alkali storage tanks, the tail gas should be absorbed by falling film or packed tower. The exhaust gas should be absorbed by multi-stage water seal.
8. Promote water-saving production process. In addition to the special process requirements, the washing of materials is preferably carried out by a countercurrent rinsing process to encourage the use of sewage cascades.
Three, the factory production environment
1. According to the actual situation, the ground of the production workshop shall adopt corresponding anti-seepage, anti-leakage and anti-corrosion measures. The workshop shall implement dry and wet separation. The plant area must fully implement the “two-way”, that is, hardening of the road site and greening in other areas.
2. There is no leakage and leakage at the production site, and the environment is clean and orderly.
3. The ground of the tank area and the general waste collection site shall be treated with hardening and anti-seepage treatment, and surrounding cofferdams shall be built around. Generally, waste collection measures shall be taken at the waste collection sites.
4. All kinds of pipelines in the plant area should be clearly set up, the pipeline layout should be clearly installed, and they should be arranged in rows or columns along the wall or column, and laid in parallel.
Four, wastewater management
1. Implement rain and sewage diversion. The initial rainwater collection pool specification meets the volume requirement of the initial rainfall; the wastewater collection plant establishes a wastewater collection tank separately, and the collected sewage is pumped into the total wastewater collection tank of the enterprise through the overhead laying pipeline; the cooling water passes through The closed pipeline laid overhead is recycled; the rainwater collection system uses open trenches. All ditch and pool are concrete poured and have anti-seepage or anti-corrosion measures.
2. Disposal of production wastewater and initial rainwater. Enterprises that self-treat and discharge wastewater should establish wastewater treatment facilities that are compatible with production capacity and types of pollutants. The wastewater treatment facilities operate normally and can meet the discharge standards. Wastewater takeover enterprises must establish pretreatment with production capacity and pollutant types. The facilities and pre-treatment facilities are in normal operation and can stably meet the take-over standards. Enterprises that are entrusted with waste water must sign an agreement with a qualified unit, complete the procedures for approval and transfer, and establish a commissioned disposal account.
3. Disposal of domestic sewage. For enterprises with takeover conditions, domestic sewage must be taken into the sewage treatment plant; enterprises that do not have the conditions for takeover should be disposed of according to regulations.
4. Discharge port setting. In principle, each company is only allowed to set up a sewage discharge port and a rainwater discharge port, and set up sampling monitoring wells and signs. The sewage discharge port should meet the requirements of standardization and rectification, so that “one obvious, two reasonable and three convenient”, that is, the environmental protection mark is obvious, the sewage outlet is set reasonably, the sewage discharge is reasonable, the sample collection is convenient, the monitoring and measurement is convenient, and the public participation and supervision are facilitated. . The rain drain should use regular open trenches and install emergency valves.
Five, Waste gas management
(1) Exhaust gas collection and transportation
1. The collection of exhaust gas should follow the principle of “collecting all receivables and collecting quality”. The exhaust gas collection system should be comprehensively designed according to factors such as gas properties and flow rate to ensure exhaust gas collection.
2. For equipment that produces fugitive dust or harmful gases, measures such as containment, isolation and negative pressure shall be taken.
3. The polluting gas should be collected by the gas collecting system of the production equipment as much as possible. When the gas is collected by the gas gathering (dust) cover, it should be surrounded or close to the pollution source as much as possible to reduce the inhalation range and facilitate the collection and control of pollution. Object.
4. Exhaust gas generated by the wastewater collection system and treatment facility unit (original pool, regulating tank, anaerobic tank, aeration tank, sludge room, etc.) should be sealed and collected and taken after effective measures.
5. The closed design of the solid waste (hazardous waste) storage yard containing volatile organic materials or obvious odor, and the exhaust gas is discharged after being collected and treated.
6. The polluted gas collected by the gas collection (dust) cover should be transported to the purification device through the pipeline. Pipeline layout should be combined with the production process, and strive to be simple, compact, short pipeline, and less space.
(2) Waste gas treatment
1. All production enterprises should select mature and reliable waste gas treatment process routes based on the comprehensive analysis of the amount of waste gas generated, the composition and properties of pollutants, temperature and pressure.
2. For high-concentration organic waste gas, the organic compounds in the exhaust gas should be recycled and reused by condensing (deep cooling) recovery technology and pressure swing adsorption recovery technology, and then assisted by other treatment technologies to achieve the standard discharge.
3. For medium-concentration organic waste gas, it should be recycled by organic solvent or thermal incineration technology after adsorption.
4. For low-concentration organic waste gas, when there is recovery value, adsorption technology should be adopted; when there is no recovery value, adsorption and concentration combustion technology, regenerative thermal incineration technology, biological purification technology or plasma technology should be adopted.
5. The malodorous gas can be discharged after the purification by the microbial purification technology, low-temperature plasma technology, adsorption or absorption technology, thermal incineration technology, etc., and does not affect the surrounding sensitive protection targets.
6. In principle, chemical enterprises that are continuously producing should treat the combustible organic waste gas by recycling or incineration. The chemical enterprises that produce intermittently should adopt incineration, adsorption or combined processes.
7. Dust exhaust gas should be treated by bag dust removal, electrostatic dust removal or bag dust removal as the core combination process. Industrial boilers and industrial furnaces and kiln exhausts are preferentially clean energy and efficient purification processes, and meet the major pollutant emission reduction requirements.
8. Improve the automation of waste gas treatment. The spray treatment facility can adopt liquid level automatic control instrument, PH automatic control instrument and ORP automatic control instrument, etc. The dosing tank is equipped with liquid level alarm device, and the dosing method should adopt automatic dosing.
9. The height of the exhaust pipe should be set according to the specifications. The height of the exhaust pipe should not be less than 15 hydrogen cyanide, chlorine gas, and phosgene exhaust pipe height should be no less than 25 meters. The inlet and outlet of the end treatment should be equipped with sampling ports and equipped with facilities for sampling. Strictly control the number of enterprise exhaust pipes, and similar exhaust gas exhaust pipes should be combined.
Six, noise management
Enterprises should use equipment with low vibration and low noise as much as possible, and the noise emission should meet the requirements of "Environmental Noise Emission Standards for Industrial Enterprises' Boundary" (GB 12348-2008).
Seven, solid waste management
1. Hazardous wastes are collected and stored according to their characteristics.
2. The ground of the hazardous waste storage site should be hardened, protected from rain, anti-diffusion and anti-leakage. The leachate enters the collection tank through the diversion tank.
3. Hazardous waste warning signs should be set up in hazardous waste storage places, and hazardous waste signs should be set up on hazardous waste containers and packaging bags.
4. Establish a hazardous waste management account. Record the relevant situation of hazardous waste storage, utilization and disposal truthfully, formulate a hazardous waste management plan and report to the district environmental protection bureau for the record, carry out the hazardous waste declaration and registration, and truthfully declare the relevant types of hazardous waste types, production amount, flow direction, storage and disposal.
5. Hazardous wastes should be entrusted to units with corresponding hazardous waste business qualifications to use the disposal, and strictly implement the hazardous waste transfer plan approval and transfer joint order system.
Eight, cleaner production
The production enterprise shall complete the clean production audit on time according to the requirements issued by the bureau every year to meet the requirements of the industry's clean production standards.
Nine, Environmental emergency management
1. Establish and improve an emergency management system. Establish an environmental emergency management agency, establish an environmental emergency management system, and implement environmental emergency management personnel.
2. Prepare emergency plans for emergency environmental incidents of enterprises. Entrust a professional technical service organization to prepare a plan, and timely report to the environmental protection department on the basis of completing the internal evaluation and external evaluation.
3. Larger environmental risk enterprises should carry out environmental safety compliance construction work.
4. Implement environmental risk prevention measures. Standardize the construction of environmental risk prevention facilities, including emergency rescue pools, initial rainwater collection pools, production wastewater discharge sluice gate valves, rainwater drain closure gate valves, and hazardous chemical storage tank cofferdams to ensure emergency production events, production Waste water, fire water, etc. are not in the factory area, and do not pollute the external environment.
5. Establish an environmental emergency materials warehouse. The emergency materials and equipment specified in the emergency plan must be in place, and a special warehouse should be set up, and a material warehouse management system should be established at the same time.
6. Conduct regular employee training drills. At least one environmental emergency knowledge training and emergency environmental incident emergency drills will be organized and archived at the annual level. Relevant account information and archival materials will be archived.
Ten, Standardize environmental management
1. Standardize the whole process of marking the construction of the facility, and mark the key nodes of the treatment facility with special symbols such as markings and drawings to make the whole process of the management facility clear at a glance and realize the quantitative management of the facilities.
2. The enterprise shall not dismantle, idle or close the pollution prevention and control facilities in violation of regulations, and ensure that the pollution prevention and control facilities operate stably and meet the standards. When the exhaust gas treatment facilities are stopped due to accident conditions or equipment maintenance, the company shall immediately take emergency measures and stop production in a timely manner, and report to the Environmental Protection Agency.
3. The environmental protection rules and regulations are complete, and a special internal environmental protection agency is set up to establish an enterprise environmental management responsibility system composed of enterprise leaders, environmental management departments, workshop leaders and full-time environmental protection personnel.
4. The relevant files are complete, and the daily wastewater, waste gas treatment facilities operation, dosing, power consumption and maintenance records, and pollutant monitoring accounts are complete.