废气治理工艺 Waste gas treatment process

   随着国家对环保的日益重视，环保已深入人心，废气处理技术也日益更新，但姜还是老的辣，很多新人、环保企业不知如何选取相关环保技术，很多细节不能很好的把握，就需要热心的专家给予指导，因此我们搜集了多种废气治理工艺。目的是给大家解答相关问题。希望对大家有所帮助。

   废气处理设备，主要是运用不同工艺技术，通过回收或去除减少排放尾气的有害成分，达到保护环境、净化空气的一种环保设备。

稀释扩散法

原理:将有臭味地气体通过烟囱排至大气，或用无臭空气稀释，降低恶臭物质浓度以减少臭味。适用范围:适用于处理中、低浓度的有组织排放的恶臭气体。优点:费用低、设备简单。缺点:易受气象条件限制，恶臭物质依然存在。

水吸收法

原理:利用臭气中某些物质易溶于水的特性，使臭气成分直接与水接触，从而溶解于水达到脱臭目的。适用范围:水溶性、有组织排放源的恶臭气体。优点:工艺简单，管理方便，设备运转费用低 产生二次污染，需对洗涤液进行处理。缺点:净化效率低，应与其他技术联合使用，对硫醇，脂肪酸等处理效果差。

曝气式活性污泥脱臭法

原理:将恶臭物质以曝气形式分散到含活性污泥的混和液中，通过悬浮生长的微生物降解恶臭物质 适用范围广。适用范围:截至2013年，日本已用于粪便处理场、污水处理厂的臭气处理。优点:活性污泥经过驯化后，对不超过极限负荷量的恶臭成分，去除率可达99.5%以上。缺点:受到曝气强度的限制，该法的应用还有一定局限。

多介质催化氧化工艺

原理:反应塔内装填特制的固态填料，填料内部复配多介质催化剂。当恶臭气体在引风机的作用下穿过填料层，与通过特制喷嘴呈发散雾状喷出的液相复配氧化剂在固相填料表面充分接触，并在多介质催化剂的催化作用下，恶臭气体中的污染因子被充分分解。适用范围:适用范围广，尤其适用于处理大气量、中高浓度的废气，对疏水性污染物质有很好的去除率。优点:占地小，投资低，运行成本低;管理方便，即开即用。缺点:耐冲击负荷，不易污染物浓度及温度变化影响，需消耗一定量的药剂。

低温等离子体

低温等离子体是继固态、液态、气态之后的物质第四态，当外加电压达到气体的着火电压时，气体分子被击穿，产生包括电子、各种离子、原子和自由基在内的混合体。放电过程中虽然电子温度很高，但重粒子温度很低，整个体系呈现低温状态，所以称为低温等离子体。低温等离子体降解污染物是利用这些高能电子、自由基等活性粒子和废气中的污染物作用，使污染物分子在极短的时间内发生分解，并发生后续的各种反应以达到降解污染物的目的。

低温等离子体空气净化设备能够显著治理的污染有:VOC、恶臭气体、异味气体、油烟、粉尘，也可用于消毒杀菌。

   上海永爱健净化设备有限公司专业提供组合式VOCs废气处理新技术及设备。致力成为一家集研发设计、设备制造、工程承包及运营管理于一体的企业。公司拥有环境污染治理总承包资质、环境工程专项设计及多个相关专利证书，是环保协会会员单位

As the country is becoming more and more attention to environmental protection,environmental protection has been deeply rooted in the hearts of the people, waste gas treatment technology is increasingly update, but the ginger is old spicy, a lot of new people do not know how to select relevant environmental protection technology, environmental protection enterprises, many details can't good grasp, requires enthusiastic experts to give guidance, so we have collected a variety of waste gas treatment technology. The goal is to answer questions. I hope it helps. The waste gas treatment equipment is mainly a kind of environmental protection equipment that can protect the environment and purify the air through recycling or removing the harmful components of the exhaust gas to reduce the emission.

Dilution diffusion method
How it works: stink the air through a chimney, or dilute it with a non-odorous air, reducing the concentration of the malodorous substances to reduce the odor. Scope of application: suitable for the treatment of odorous gases in low and medium concentrations. Advantages: low cost and simple equipment. Disadvantages: easily restricted by weather conditions, malodorous substances still exist.
The water absorption
Principle: make use of the characteristic that certain material in odour dissolves easily in water, make odour composition direct contact with water, dissolving in water achieves deodorization goal thereby. Scope of application: malodorous gases from water-soluble, organized sources. Advantages: simple process, convenient management, low cost of equipment operation, secondary pollution, cleaning solution to be processed. Disadvantages: low efficiency of purification, should be used in combination with other technologies, poor treatment effect of thiol, fatty acid, etc.
Aeration activated sludge deodorization
Principle: dispersing malodorous substances into the mixture containing activated sludge in the form of aeration. Scope of application: as of 2013, Japan has been used for the treatment of odor in fecal treatment plants and sewage treatment plants. Advantages: after the acclimation of activated sludge, the removal rate of odorous ingredients can be up to 99.5%. Disadvantages: restricted by aeration intensity, the application of this method has some limitations.
Multi-medium catalytic oxidation process
Principle: the reactor tower is filled with special solid filler. When the malodorous gas passes through the packing layer under the action of the induced draft fan, and the liquid phase compound oxidant spurts out in the form of divergent mist through the special nozzle on the surface of the solid phase filler, and the pollution factor in the malodorous gas is fully decomposed under the action of multi-medium catalyst. Scope of application: it is applicable to a wide range of applications, especially for the treatment of waste gas with large volume and high concentration, and has a good removal rate for hydrophobic pollutants. Advantages: small footprint, low investment and low operating cost; Management is easy to use out of the box. Disadvantages: it is resistant to impact load, difficult to influence pollutant concentration and temperature change, and needs to consume a certain amount of reagent.
Low temperature plasma
Cold plasma is the fourth state of matter after solid, liquid and gas. When the external voltage reaches the ignition voltage of the gas, the gas molecules are broken down to produce a mixture including electrons, various ions, atoms and free radicals. Although the electron temperature is very high during the discharge process, the temperature of the heavy particle is very low, and the whole system presents a low temperature state, so it is called a low temperature plasma. Low-temperature plasma degradation pollutants is to use these high-energy electrons, free radicals and other active particles and the pollutants in waste gas to decompose the pollutant molecules in a very short time, and the subsequent reactions to achieve the purpose of degradation of pollutants.
Low temperature plasma air purification equipment can significantly control pollution :VOC, odorous gas, odorous gas, lampblack, dust, also can be used for disinfection and sterilization.

Shanghai yongaijian purifying equipment co., LTD. Specializes in providing new technology and equipment for combined VOCs waste gas treatment. We are committed to becoming an enterprise integrating r&d, design, equipment manufacturing, engineering contracting and operation management. The company has the general contracting qualification of environmental pollution control, special design of environmental engineering and a number of related patent certificates, and is a member of the environmental protection associationAs the country is becoming more and more attention to environmental protection, As the country is becoming more and more attention to environmental protection, environmental protection has been deeply rooted in the hearts of the people, waste gas treatment technology is increasingly update, but the ginger is old spicy, a lot of new people do not know how to select relevant environmental protection technology, environmental protection enterprises, many details can't good grasp, requires enthusiastic experts to give guidance, so we have collected a variety of waste gas treatment technology. The goal is to answer questions. I hope it helps. The waste gas treatment equipment is mainly a kind of environmental protection equipment that can protect the environment and purify the air through recycling or removing the harmful components of the exhaust gas to reduce the emission.

Dilution diffusion method
How it works: stink the air through a chimney, or dilute it with a non-odorous air, reducing the concentration of the malodorous substances to reduce the odor. Scope of application: suitable for the treatment of odorous gases in low and medium concentrations. Advantages: low cost and simple equipment. Disadvantages: easily restricted by weather conditions, malodorous substances still exist.
The water absorption
Principle: make use of the characteristic that certain material in odour dissolves easily in water, make odour composition direct contact with water, dissolving in water achieves deodorization goal thereby. Scope of application: malodorous gases from water-soluble, organized sources. Advantages: simple process, convenient management, low cost of equipment operation, secondary pollution, cleaning solution to be processed. Disadvantages: low efficiency of purification, should be used in combination with other technologies, poor treatment effect of thiol, fatty acid, etc.
Aeration activated sludge deodorization
Principle: dispersing malodorous substances into the mixture containing activated sludge in the form of aeration. Scope of application: as of 2013, Japan has been used for the treatment of odor in fecal treatment plants and sewage treatment plants. Advantages: after the acclimation of activated sludge, the removal rate of odorous ingredients can be up to 99.5%. Disadvantages: restricted by aeration intensity, the application of this method has some limitations.
Multi-medium catalytic oxidation process
Principle: the reactor tower is filled with special solid filler. When the malodorous gas passes through the packing layer under the action of the induced draft fan, and the liquid phase compound oxidant spurts out in the form of divergent mist through the special nozzle on the surface of the solid phase filler, and the pollution factor in the malodorous gas is fully decomposed under the action of multi-medium catalyst. Scope of application: it is applicable to a wide range of applications, especially for the treatment of waste gas with large volume and high concentration, and has a good removal rate for hydrophobic pollutants. Advantages: small footprint, low investment and low operating cost; Management is easy to use out of the box. Disadvantages: it is resistant to impact load, difficult to influence pollutant concentration and temperature change, and needs to consume a certain amount of reagent.
Low temperature plasma
Cold plasma is the fourth state of matter after solid, liquid and gas. When the external voltage reaches the ignition voltage of the gas, the gas molecules are broken down to produce a mixture including electrons, various ions, atoms and free radicals. Although the electron temperature is very high during the discharge process, the temperature of the heavy particle is very low, and the whole system presents a low temperature state, so it is called a low temperature plasma. Low-temperature plasma degradation pollutants is to use these high-energy electrons, free radicals and other active particles and the pollutants in waste gas to decompose the pollutant molecules in a very short time, and the subsequent reactions to achieve the purpose of degradation of pollutants.
Low temperature plasma air purification equipment can significantly control pollution :VOC, odorous gas, odorous gas, lampblack, dust, also can be used for disinfection and sterilization.

Shanghai yongaijian purifying equipment co., LTD. Specializes in providing new technology and equipment for combined VOCs waste gas treatment. We are committed to becoming an enterprise integrating r&d, design, equipment manufacturing, engineering contracting and operation management. The company has the general contracting qualification of environmental pollution control, special design of environmental engineering and a number of related patent certificates, and is a member of the environmental protection associationAs the country is becoming more and more attention to environmental protection, As the country is becoming more and more attention to environmental protection, As the country is becoming more and more attention to environmental protection,

发布于2017-11-27