A few days ago, the relevant person in charge of the Ministry of Ecology and Environment reported the national ecological environment quality status from January to June 2022. Among them, the surface water environmental quality continued to improve, the soil environmental conditions, groundwater environmental quality, natural ecological conditions, and overall acoustic environment quality Stablize. Although the overall air quality has improved, the ozone concentration in cities at prefecture level and above was 144 micrograms per cubic meter, a year-on-year increase of 4.3%; the proportion of good days in the Yangtze River Delta and the Fenwei Plain dropped by 5.4% year-on-year respectively. percentage points and 5.1 percentage points, PM2.5 concentration increased by 2.9% and 4.3% respectively year-on-year.
Controlling VOCs emissions is the key to air pollution control
As we all know, the increase in the concentration of ozone and PM2.5 is an important feature of composite air pollution. Although the concentration of VOCs (volatile organic compounds) in the atmosphere is not high, it has an impact on the environment. But it is very large, and it is also one of the main conditions causing composite pollution of the atmosphere.
Specifically, VOCs are an important reason for the increase in the concentration of pollutants such as ozone in the atmosphere and their transformation into secondary organic particulate matter, ultimately forming PM2.5. VOCs can photochemically react with nitrogen oxides to generate ozone under light conditions. It is also an important precursor of PM2.5 secondary particulate matter and can ultimately generate secondary organic particulate matter through oxidation, adsorption, condensation and other processes. In other words, VOCs, ozone and PM2.5 are related to each other .
To put it simply, ozone and PM2.5 are both characteristic pollutants of compound air pollution. If VOCs emissions are not controlled, the possibility of ozone pollution and PM2.5 pollution will increase.
With diverse sources and complex ingredients, VOCs management has become a long-standing problem.
For VOCs, the country has issued a number of relevant policies for governance and control. There are clear requirements for key VOCs emission targets such as industrial parks and chemical companies. However, due to various The reason is that the effect of VOCs control is not very satisfactory.
The sources of VOCs are very diverse. Some volatile raw materials and finished products will produce VOCs at any time during storage and transportation. The production processes such as modulation, painting, printing, drying, printing and dyeing, and cleaning will also produce VOCs. If open-air operations are used or treatment facilities are old and damaged, resulting in insufficient collection, VOCs gases will spread to the surrounding areas.
For companies that are interested in governance, one of the most common problems is that the company spends a lot of money to purchase exhaust gas treatment equipment, which also consumes a lot of energy and money in the daily governance process. Although the emission standards are finally met, However, the stench and odor problems that still exist in are difficult to solve in . These odorous gases will still trigger complaints from surrounding residents, leading to shutdowns and emission restrictions.
According to current statistical data, single treatment methods such as adsorption, condensation, and incineration cannot achieve the ideal treatment effect. The important reason for this phenomenon is the wide variety and complex composition of VOCs, especially those gathered by chemical companies. In industrial parks, various types of VOCs emitted by different companies are mixed, which makes governance more difficult.
Composite biological enzyme: full-effect control of low-concentration complex components VOCs, ozone, PM2.5, and odor
As mentioned above, most of the VOCs gases with high concentrations of complex components have reached the emission level after being processed by professional large-scale equipment. Standards, but the concentration of these emitted gases has only become lower, causing ozone and PM2.5 pollution, and problems such as foul odor affecting living areas still exist. Therefore, handling low-concentration VOCs of complex components and the resulting ozone, PM2.5, odor and other series of problems is the key to the "last mile" of VOCs management, and compound biological enzyme products are exactly was born to solve these problems. Compared with the ordinary biological enzyme ,
, one of the outstanding advantages of the compound biological enzyme is that can handle VOCs with complex components. Both monomeric enzymes and composite biological enzymes use the catalytic decomposition ability of enzymes to control pollution, but monomeric enzymes are only effective on a single pollutant and are obviously ineffective on VOCs with complex components.The composite biological enzyme has the effect of removing more than ten kinds of pollutants such as ammonia , trimethylamine , hydrogen sulfide , etc. In addition, the composite biological enzyme itself has higher catalytic efficiency, and can effectively deal with sudden pollution. Play a role in timely management.
In addition, the application methods of of compound biological enzymes are also flexible and diverse. For places such as raw materials and finished product warehouses that generate VOCs gas, you can use the spray system and spray equipment to spray at any time to reduce the VOCs concentration in the confined space.
For inside and around the industrial park, we can cooperate with fog cannon truck and fog and dust system to spray biological enzyme treatment agents into the atmosphere. While reducing the concentration of VOCs around the park, it can also eliminate the ozone that has been generated. , PM2.5 and other pollutants to improve the air quality around the park.
compound biological enzyme treatment agent can also be added to large-scale equipment with atomization, spraying and other treatment links. replaces ordinary water or chemicals to improve the purification efficiency of the equipment. , the compound biological enzyme itself has deodorizing and deodorizing properties. It can also effectively remove the stench and odor in the exhaust gas and reduce complaints caused by stench and odor.
From the Ministry of Ecology and Environment's summary of the environmental quality situation in the first half of 2022, it can be seen that in the context of other pollution being effectively improved, the problems of ozone and PM2.5 pollution have become more prominent, and the importance of relevant departments to this issue Will be even higher. VOCs, as the key to solving the problem of air pollution control, will be subject to more stringent supervision. For emission companies and industrial parks, whether they can manage VOCs well is a very critical step for normal production operations.
