How to deal with benzene waste gas and how to dispose of waste xylene

Hello landlord, according to the questions you raised, the following will be answered in detail for you:

In the process of chemical production, the exhaust gas emitted is relatively difficult to treat, and the harm is great, not only polluting the air, but also leading to human poisoning, because these exhaust gases often contain benzene and other substances, which are generally called benzene-containing waste gas.

Adsorption method to treat benzene waste gasIn the traditional waste gas treatment process, activated carbon adsorption is often used to treat these benzene-containing waste gases, such as a front-stage activated carbon bed is set up in the catalytic combustion device, and part of the benzene is adsorbed away through activated carbon, but after adsorption of a part, the adsorption of activated carbon will be greatly reduced, and the concentration of waste gas will be very high. Therefore, after the adsorption of activated carbon, other treatments are required.

Catalytic combustion to treat benzene exhaust gasFor the treatment of benzene-containing waste gas, it is more effective to use a catalytic combustion device, because in this device, through catalytic combustion, these benzene-containing waste gases can be directly turned into harmless or easy-to-collect components, which can make these waste gases reused, reduce the harm of waste gases, and also reduce costs.

Hope it helps!

The Yeethoven we used when we renovated it was the kind of engineering outfit of a pot. We used Ye Duofen before, this is to treat formaldehyde, spraying formaldehyde removal potion on decoration materials, the industry knows, it is very good, I used to run projects in Yuhang District, Xiaoshan and knew that this kind of project is necessary, as if a pot of engineering equipment is enough. I saw that they were all using sprayers, which was pretty fast, and now I have friends asking me how to do this, and I did the same to help them.

There are three main methods for treating organic waste gas containing "triphenyl": activated carbon adsorption method, catalytic combustion method and biological treatment method.

The catalytic combustion method to treat organic waste gas containing "triphenyl" is to oxidize the organic pollutants in the waste gas into carbon dioxide and water at a lower temperature under the action of lead-containing and palladium-containing catalysts.

This is an organic waste gas treatment method without open flame under catalytic conditions, which can treat all kinds of organic waste gases. This method is well established and widely used to treat high concentrations of organic waste gases, but there is a risk of occurrence if the temperature of the catalyst bed is not well controlled.

Catalytic combustion applications.

Catalytic combustion is suitable for the purification of toxic and harmful gases containing combustible gases and vapors, but for toxic and harmful gases containing a large number of dust particles and fog droplets, it is easy to cause the blockage of the catalytic bed, so that the catalytic activity is reduced, thereby reducing the purification efficiency. Catalytic combustion purification methods are suitable for almost all industrial processes that emit hydrocarbons or odorous compounds.

Since the temperature of the exhaust gas changes at any time, if the catalyst cannot adapt to the temperature change within a certain range, the performance of the catalyst will be reduced, and the purification efficiency will be reduced. Therefore, the catalyst must be able to adapt to a range of temperature changes.

Materials: 50 grams of activated carbon, 50 grams of fine sand, a funnel, a filter container.

Rock Ridge Method:

1. Divide the activated carbon and fine sand into a group of 10 grams and spread them evenly in the filter container.

After the jujube liquid 2 is laid, connect the funnel, and filter the waste water containing benzene into the container and filter it five times. It can be processed to a qualified level.

Benzene is a toxic and harmful organic compound, because of its certain volatility and biodegradation difficulty, so the removal and treatment in the sewage treatment process is more complex, and the operation and improvement of the sewage treatment plant also put forward higher requirements. Here's how to treat benzene contamination in a wastewater treatment plant:

Biological treatment: The use of microorganisms to biodegrade benzene and convert it into harmless substances such as carbon dioxide and water. The biodegradation of benzene needs to be used as one of the essential basic elements for the growth of micro-Yuchai, and needs to pay a high energy price, so the biodegradation reaction is relatively slow and easily affected by physical factors such as response concentration and TOC.

Plasma technology: Benzene is treated with plasma technology to decompose benzene into organic acids and small molecule compounds to achieve the effect of decomposition and removal, which is suitable for treating high-concentration and difficult-to-biodegrade pollutants.

Activated carbon adsorption method: soaking benzene in activated carbon to prevent leakage with the porous structure, large surface area and good affinity of activated carbon, so that benzene molecules can adsorb and diffuse on its surface to complete the adsorption and removal of benzene.

Reactive oxygen species oxidation method: the use of active oxidants to oxidize and decompose benzene, convert it into harmless substances, and realize the removal of benzene.

In general, the biological treatment method is the first choice for the treatment of benzene pollution, but it is necessary to consider the characteristics and quantity of the pollutants according to the characteristics and quantity of the pollutants, and select the appropriate treatment process for treatment. Select the appropriate treatment process, implement scientific operation and maintenance management and control, and obtain the ideal treatment effect.

Benbiqiao pollution is a relatively common decoration pollution, in the process of decoration, the general materials will contain benzene, benzene is a very common harmful decoration material pollutant to the human body. Benzene can also release certain radiation and toxic and harmful gases. Pollutants such as benzene, if they exceed the standard, are very harmful to the human body, and the release time of benzene is also very long.

Do you know how benzene pollution should be controlled? Let's introduce the methods of controlling benzene pollution.

1. Governance methods.

Step 1: Open the window for ventilation, the decoration has just ended, the pollution must be several times, dozens of times, or even hundreds of times exceeded, so the initial one to two weeks, what means are not very effective, the best way is to open the window for ventilation, as soon as possible to discharge the main indoor pollutants to the outdoors, because the formaldehyde is generally released for three to fifteen years, ventilation alone will not solve the problem.

Step 2: After the first step, indoor pollution has become several times from dozens of times, or even hundreds of times exceeding the standard, then the pollutants are emitted into a slow release process, no matter how you ventilate, it is impossible to remove it at once, then you must be ready to fight a protracted war, you can use the following methods: first of all, flowers and plants, such as spider plants, cacti, green plants, etc., such plants have a certain odor absorption effect, can eliminate harmful substances in the air.

Step 3: Buy some Maya blue can be placed in drawers, cabinets, the deodorization effect is very good and safe without secondary pollution, tourmaline and other natural minerals, made by special processing technology, the pore size of its internal pores is between nanometers, and it is arranged in crystals. At the same time, it has weak electricity, and the molecular diameters of formaldehyde, ammonia, benzene, toluene, and xylene are all between nanometers, and they are all polar molecules, which have the characteristics of preferential adsorption of harmful gases such as formaldehyde, benzene, and TVOC, so as to achieve the effect of purifying indoor air.

Step 4: You can choose some photocatalysts, but you should investigate them carefully, otherwise it is easy to have secondary pollution. And also pay attention to whether it is toxic***, whether it will cause harm to furniture, etc. (it is said that some things will cause discoloration of furniture), whether it is convenient to use, etc.

Of course, we must continue to ventilate and ventilate at this stage.

Second, prevention and control knowledge.

1. When carrying out interior decoration, we must choose paints, coatings, adhesives and waterproof materials that meet national standards.

2. Choosing some water-based wood paint is the way to prevent and reduce benzene pollution in home interior decoration.

3. Be careful not to seal the bottom of the wall with paint, which is a process that seriously pollutes the indoor environment and will cause long-term benzene pollution.

4. Due to the rapid volatilization of benzene under normal circumstances, do not move in immediately after decoration.

5. Do not use furniture made of inferior large core board or MDF. It releases formaldehyde or benzene in large quantities over a long period of time.

Benzopyrene (benzo[a]pyrene, BAP) is an important polycyclic aromatic hydrocarbon pollutant that has a great harmful effect on human health. The following are the main ** of benzopyrene in wastewater:

1.Industrial wastewater: Benzopyrene can be discharged from industrial wastewater such as oil refining, coking, pharmaceutical, fuel, plastics, fertilizers, printing and dyeing, etc.

2.Agricultural wastewater: Because benzopyrene is widely found in agricultural products such as pesticides, preservatives, and organic fertilizers, these wastewater generated during agricultural production and processing contain benzopyrene.

3.Automobile exhaust: The exhaust gas produced by automobile combustion also contains benzopyrene, which may also enter the water body after the exhaust gas of these Mingfang exhaust gases escape around the factory area and roads, becoming one of the most important benzopyrene in wastewater.

4.Landfill leachate: The garbage contains benzopyrene, which can easily pollute the groundwater as the landfill filtrate enters the groundwater body.

5.Domestic sewage: Benzopyrene can react with nitrous oxide and other components in household wastewater and enter domestic sewage.

In summary, benzopyrene is very widespread in wastewater, and we need to take appropriate measures to prevent the generation of pollution sources, control its discharge in wastewater, and reduce the risk of human exposure to benzopyrene. At the same time, it is also necessary to use professional wastewater treatment equipment and technology in wastewater treatment to remove pollutants such as benzopyrene to protect the environment and human health.

Benzene, toluene, xylene.

Benzene chemical raw materials such as trimethylbenzene are often widely used as solvents or synthetic raw materials in pesticides, paints, coatings, inks, printing, rubber solvents and other industries, while benzene organic compounds are volatile.

In the production process, due to the volatilization of benzene substances, VOCs in the exhaust gas often exceed the standard, which brings environmental protection pressure to relevant production enterprises, and will also bring economic losses to production enterprises due to the volatilization and loss of benzene raw materials. Activated carbon is commonly used in the industry.

carbon fiber) adsorption or RTO incineration. However, there is an adsorption rate in activated carbon (carbon fiber) adsorption.

Problems such as low and difficult to meet the export standard, frequent filler replacement, and large amount of hazardous waste; Although RTO incineration can completely solve the problem of tail gas emission standards, it cannot achieve **, resulting in a waste of raw material resources and a large energy consumption in the incineration process. Therefore, how to realize the resource utilization of VOCs and the standard emission of exhaust gas has become the common expectation of industry enterprises.

Lan Xiao. Based on the research and analysis of the molecular characteristics of benzene organic raw materials, the technology adopts the innovatively developed Seplite LXQ high-specific surface and high-strength polystyrene.

Macroporous adsorption resin, combined with the self-designed sepsolut exhaust gas adsorption system device, can realize the efficient adsorption and high efficiency of benzene exhaust gas VOCs, high treatment accuracy (tail gas VOCs can be treated to less than 20mg m), benzene volatiles ** rate is as high as 99%, and the treatment effect has been tested by dozens of enterprises in different fields.

and industrial verification, stable and reliable. Lanxiao Technology's waste gas VOCs special treatment resin and system technology provides a more cost-effective benzene waste gas VOCs treatment option for enterprises in related industries.

n Advantages and characteristics of Lanxiao waste gas VOCs special treatment resin and system technology in benzene waste gas treatment.

1) Stable performance and low resin loss (more than five years under normal conditions, and the annual replenishment rate is less than 10).

2) Easy desorption, the operating cost is much lower than that of activated carbon or carbon fiber ** process.

3) The processing accuracy is high, and the removal rate is as high as 99%.

4) Spherical resin adsorption filler, the wind resistance of the system is smaller.

5) The processing flexibility is large, and it can withstand large air volume and concentration fluctuations.

How to do toluene, benzene exhaust gas purification method.

Absorbed with activated carbon or other inert materials. It can also be scrubbed with an emulsion made of non-flammable dispersants, diluted and placed in the wastewater system.

construct embankments or dig pits for containment; Cover with foam to reduce vapor hazards. Evacuated with an explosion-proof pump to a dedicated collector** or transported to a waste disposal site for disposal. If a large amount of toluene is sprinkled on the ground, sand and mud should be used immediately to block the spread of liquid; If dumped in water, dams should be built immediately to cut off the flow of contaminated water, or fences should be used to block the spread of toluene; If A is sprinkled in the soil, the contaminated soil should be collected immediately and quickly moved to a safe place to allow it to evaporate.