1.掩蔽法
1. Masking method
原则：用更强烈的香气和气味来掩盖恶臭，这样才能被接受。
Principle: cover up the stench with a stronger aroma and odor so that it can be accepted.
适用范围：适用于需要立即、临时低浓度恶臭气体影响的场合。臭气浓度约为2.5，无组织排放源为无组织排放源。
Scope of application: it is suitable for the occasions that need to eliminate the influence of low concentration odor gas immediately and temporarily. The odor concentration is about 2.5, and the unorganized emission source is the unorganized emission source.
优点：能尽快恶臭效应，灵活性大，成本低。
Advantages: it can eliminate odor effect as soon as possible, with high flexibility and low cost.
缺点：臭味成分没有去除。
Disadvantages: odor components are not removed.
2.稀释扩散法
2. Dilution diffusion method
原则：通过烟囱排出有臭味的气体，或用无臭空气稀释它们，以降低气味浓度。
Principle: exhaust odorous gases through chimney or dilute them with odorless air to reduce odor concentration.
适用范围：适用于处理组织排放的中、低浓度恶臭气体。
Scope of application: it is applicable to the treatment of medium and low concentration malodorous gas emitted by organizations.
优点：成本低，设备简单。
Advantages: low cost, simple equipment.
缺点：易受气象条件影响，气味物质仍然存在。
Disadvantages: still susceptible to meteorological conditions.
3.热力燃烧法与催化燃烧法
3. Thermal combustion method and catalytic combustion method
原理：恶臭物质在高温下与燃气充分混合，实现完全燃烧。
Principle: the odor substance is fully mixed with gas at high temperature to realize complete combustion.
适用范围：适用于高浓度、少量可燃气体的处理。
Scope of application: suitable for the treatment of high concentration and small amount of combustible gas.
优点：提纯效率高，气味物质完全氧化分解。
Advantages: high purification efficiency, complete oxidation and decomposition of odorants.
缺点：该设备易腐蚀，耗油，处理成本高，易形成二次污染。
Disadvantages: the equipment is easy to corrosion, oil consumption, high treatment cost and easy to form secondary pollution.
4.水吸收法
4. Water absorption method
原理：利用气味中的一些物质溶于水的特性，使气味成分与水直接接触，使臭气成分溶解于水中达到除臭的目的。
Principle: make use of the characteristics of some substances in the odor dissolved in water, make the odor components directly contact with the water, and dissolve the odor components in the water to achieve the purpose of deodorization.
适用范围：水溶性、有组织的恶臭气体排放源。
Scope of application: water soluble and organized odor emission source.
优点：工艺简单，管理方便，设备运行成本低，产生二次污染，需要对洗涤液进行处理。

Advantages: the process is simple, the management is convenient, the operation cost of the equipment is low, and the secondary pollution is produced, so the washing liquid needs to be treated.
缺点：净化效率低，应与其他技术相结合，硫醇、脂肪酸等处理效果差。
Disadvantages: low purification efficiency, should be combined with other technologies, mercaptan, fatty acid treatment effect is poor.
5.药液吸收法
5. Liquid absorption method
原理：利用某些物质和药物溶液在恶臭中的化学反应特性去除一些气味成分。
Principle: using the chemical reaction characteristics of some substances and drug solutions in the odor to remove some odor components.
适用范围：适用于高、中浓度气味的处理。
Scope of application: suitable for high and medium concentration odor treatment.
优点：可以有针对性地处理一些气味成分，工艺比较成熟。
Advantages: it can be targeted to deal with some odor components, and the process is relatively mature.
缺点：净化效率低，吸附剂消耗大，易形成，二次污染。
Disadvantages: low purification efficiency, high adsorbent consumption, easy formation and secondary pollution.