Common problems and countermeasures for enterprise exhaust pollution control

the common problem of organized emission siqanorganized emission steam is usually the exhaust gas discharged by the production device or the gas storage tank is equipped with a collection device, which is treated by the corresponding facilities through the exhaust cylinder seqcs that meet the requirements of various industriesthe common question1) whether there are monitoring measures for enterprise emissions,2) whether the process is reasonable, the lack of effective treatment process will lead to secondary pollution and emissions can not comply with the relevant regulations,3) whether there is sufficient processing capacity, if the processing capacity is insufficient will occur in excess of emissions or in-line situation;4) treatment costs are reasonable, if the lack of economy, too high treatment costs will lead to enterprises due to excessive costs do not run or check when the operation, easy to collect the usual exhaust gasthe secondof the common problem of pollution of unorganized exhaust gases
unorganized emissions refer to emissions from emission sources that do not pass through the exhaust cylinder without irregular discharge or discharge cylinder height of less than 15mcommon problems1) loading, unloading, production process and waste water treatment plant whether there are collection facilities,2) whether there is running, risk, drip, leakage phenomenon,3) whether the production process is reasonable,4) existing waste gas collection, treatment facilities, enterprises, need to pay attention to whether the complete collection, whether the classification collection, treatment process is reasonable, processing capacity is sufficient, and the economic feasibility of operating coststhree organized, non-organized exhaust gas pollutant control countermeasures
1, reduce the emission severity of exhaust gas pollutants from the exhaust gas collection and management 1) exhaust gas collection should be in accordance with the principle of "collectable, quality collection", exhaust gas collection system should be based on the nature of the gas, flow, concentration, production, wind speed and other factors integrated design, to ensure the effect of exhaust gas collection 2) Preferably bring their own gas collection system and advanced waste gas treatment process equipment The contaminated gas collected by the gas cover should be piped to the outer platoon after the purification device is treated to meet the standards The gas collection device and pipe are arranged in the premise of the production process to ensure the rate of exhaust gas collection and reduce the unorganized emissions of exhaust gases Without affecting production, the gas cover collection is as close to the source of contamination as possible 3) For the production of exhaust gas process links, equipment, should take closed, negative pressure and other operational measures Contains volatile materials (acids, alkalis, organic saline, etc.) or odor of solid waste (including dangerous waste) storage, staging site required closed design, exhaust gas after collection and purification treatment measures to meet the standards of the outer row Waste gas from sewage collection and treatment units (e.g anaerobic pools, aeration tanks, sludge pools, etc.) shall be collected in an closed manner and effective measures shall be taken to treat post-discharge 2, exhaust gas pollutant control measures 1) the choice of exhaust gas process: the construction unit according to the emission sesame and pollutants, nature, composition, temperature, pressure, etc to choose advanced mature and reliable waste gas treatment process Increase the automation of exhaust gas treatment To achieve timely and reliable control Minimize the generation of exhaust organisms, reduce secondary pollution and treatment 2) Particulatematter: According to the amount of exhaust gas, concentration, etc to choose cloth bag, static dust removal or cloth bag dust removal as the core of the combination of process treatment Boilers and industrial kilns give priority to clean energy, such as cogeneration, the use of natural gas, etc., and waste gases are used in efficient purification processes 3) Organic exhaust gas treatment: for high concentration of organic exhaust gas, can be used condensation (deep cold) recovery technology, variable pressure adsorption recovery technology, such as organic compounds recycling in the exhaust gas, and then combined with other treatment technology to achieve the standard emissions For medium concentration of organic exhaust gas, activated carbon adsorption and recovery of organic solvent stake or thermal incineration technology after purification of the standard discharge For low-concentration organic exhaust gas, when there is recovery value, adsorption technology should be used, and when there is no recovery value, it is advisable to use adsorption concentrated combustion technology, heat storage heat burning technology, biopurification technology or plasma technology For chemical, petrochemical and other enterprises to continuously produce combustible organic exhaust gas to take recycling or incineration treatment, intermittent production of flammable organic exhaust gas using incineration, adsorption or combination process treatment 4) Odor gas: can be used microbial purification technology, low-temperature plasma technology, adsorption or absorption technology, thermal incineration technology, such as the discharge of the standard after the standard, without affecting the surrounding sensitive protection targets 5) Acid Mist: Acid Mist Tower and Absorption Tower, after the standard of the outer row 6) After treatment of exhaust gas by meeting the height of the exhaust cylinder exhaust 3, organized exhaust gas countermeasures 1) to strengthen the monitoring and control of enterprise emissions; 2) for the specific situation of the enterprise, if the exhaust gas type is complex, need to be classified collection, homogenous treatment, such as inorganic exhaust gas using water, acid, alkali and other solution absorption, organic gas using condensation, adsorption, solvent absorption etc 3) choose an effective and economical treatment process, the waste gas material for resource reuse, such as the use of activated carbon, carbon fiber adsorption can be recycled the useful substances, the use of solvent absorption to achieve waste resources, the use of adsorption coupling catalytic combustion technology can achieve in-situ regeneration, for the material can no longer be used, can be used incineration and new molecular cracking technology harmless treatment 4, unorganized emission gas countermeasures 1) increase collection facilities, change non-organized emissions to organized emissions, 2) strengthen management, regular inspection and maintenance of equipment (pipelines, valves, pumps, etc.), to ensure the strictness of equipment, to prevent leakage from non-organized emissions; 3) analysis of existing The rationality of the process, the transformation of the process and facilities to reduce the emission of exhaust gases, 4) the whole process: loading, unloading, production process and wastewater treatment equipment, such as classification and collection, quality treatment, selection of reasonable collection technology and treatment process, strengthen the effectiveness of collection, the effectiveness of the treatment process and economic type, change unorganized emissions into organized emissionstandards four toxic and harmful gas 1, the installation of toxic gas leakage emergency disposal device 1) does not involve toxic and harmful gases do not need to set 2) according to the actual situation, has for toxic and harmful gases (such as hydrogen sulfide, hydrogen cyanide, hydrogen chloride, light gas, chlorine gas, ammonia, benzene, etc.) for leakage emergency disposal measures 2, do a good job of toxic gas leakage monitoring and early warning measures 1) does not involve toxic and harmful gases do not need to set up control and early warning measures 2) according to the actual situation, with toxic and harmful gases (such as hydrogen sulfide, hydrogen cyanide, hydrogen chloride, light gas, chlorine gas, ammonia, benzene, etc.) set up production area or plant area leakage monitoring early warning measures five meet the relevant air protection distance requirements
exhaust gas pollutants need to meet the environmental protection distance and sanitary protection distance of EIA and approval Have no environmentally sensitive targets within a certain distance