Sewage odor treatment air purification scheme
Author: Li Deng environmental protection
One. Background of the project
Sewage treatment plant wastewater treatment project will volatilize a certain amount of malodorous gas during the treatment process. The odor component is mainly composed of hydrogen sulfide, ammonia gas, methyl mercaptan and hydrocarbon compounds, which is more complicated; if directly discharged, it will affect The physical and mental health of the surrounding residents and on-site staff! It can lead to respiratory diseases and lung diseases; long-term in this environment will bring great harm to the health of the individual and the natural environment, and have a great impact on the respiratory system and cardiovascular disease. The respiratory tract, when exposed to high concentrations, may cause central nervous system depression. The effects of long-term or repeated exposure. Plus in the confined space, inhale an unpleasant smell. When the concentration reaches 1000 ppm, the nose and throat will be irritated before it affects the central nervous system. Coupled with continuous production, etc., long-term in this environment will bring great harm to the individual's physical health and the natural environment, while reducing work efficiency.
two. Sewage odor
A wide variety of odorous substances have a wide range of toxic effects on human respiratory, digestive, cardiovascular, endocrine and nervous systems. Among them, aromatic compounds such as benzene, toluene and styrene can cause distortion and cancer.
three. Odor properties of sewage
1. The malodorous gas component is mainly composed of hydrogen sulfide, ammonia gas, methyl mercaptan and hydrocarbon compounds. The concentration is relatively high, the irritancy is strong, there is no dust particles, and the temperature is normal temperature.
2. The gas is waste, the composition is complex, the hazard is large, and it cannot be recycled again;
3. The gas is a substance that is difficult to biodegrade, so it should be treated by plasma oxidation.
Summary: Sewage odor treatment is the most time consuming for the odor of corrosive gas hydrogen sulfide (H2S). The traditional method resources are continuously input and the operation of sewage treatment facilities is operated. The complaints of employees and surrounding communities become more frequent and directly affect you. The ability to operate effectively, often replacing expensive components that are excessively corroded, adds significant cost. Simply speaking, plasma ions can help. For many industrial facilities, such as sewage treatment plants, it is an indisputable fact that factories with foul odors can solve this problem. It is applied in wastewater treatment facilities to effectively reduce H2S content and is particularly effective against these major pollutants. Unlike traditional chemical agents or biodegradation and various filtration methods to solve problems, plasma air removes odor sources and problem areas. In the facility, not only for the stench, but also provides a cleaner and healthier working environment, and it greatly reduces the hydrogen sulfide gas H2S, the odor and corrosion problems in the facility are completely eliminated, the chemical and biological decomposition There is no ability to solve problems within the facility.
Treatment of sewage odor
1. Physical deodorization method 2. Chemical method 3. Biological deodorization method 4. Plasma deodorization method
aims:
Finally, the pollutants of the air outlet reach the target
"Integrated Emission Standards for Air Pollutants" (GB16297-1996);
"Emission Standards for Pollutants in Urban Sewage Treatment Plants" (GB18918-2002);
The secondary emission requirements of the Emission Standard for Odor Pollutants (GB14554-1993) are as follows:
| 成分 | 厂界标准（mg/m³） |
| 甲硫醇 | 0.007 |
| H2S | 0.06 |
| NH3 | 1.5 |
| 气味（无量纲） | 20 |
V. Treatment basis and principle
Processing basis
1) The Environmental Protection Law of the People's Republic of China;
2) “Emission Standards for Pollutants in Urban Sewage Treatment Plants” GB18918-2002;
3) "Industrial Enterprise Boundary Noise Standard" GB12348-90;
4) "Sanitary Standards for Industrial Enterprises Design" GBZ1-2002;
5) "Integrated Emission Standards for Air Pollutants" (GB16297-1996);
6) “Emission Standards for Odor Pollutants” (GB14554-1993);
7) "Atmospheric Environmental Quality Standards" (GB3095-82);
8) "Three Waste Treatment Engineering Technical Manual · Waste Gas Volume";
9) "Air quality hydrogen sulfide, methyl mercaptan, methyl sulfide, dimethyl disulfide determination gas chromatography" GB/T14678;
10) "Determination of air quality trimethylamine, gas chromatography" GB/T14676;
11) "Determination of malodor three-point comparison type odor bag method" GB/T14675-93;
Processing principle
1. Choose a technical route that ensures governance effectiveness;
2. Select equipment that saves investment, is reasonable, adapts to local conditions, is simple to operate, operates reliably, and works well;
3. Safe and reliable, easy to operate; no need to clean regularly, fireproof, deodorize;
4. After the malodorous gas is treated by the purification system, the pollutants meet the national emission standards;
5. Completely achieve the purpose of deodorizing and killing bacteria.
six. Process flow:
Plasma air system solutions are easy to deploy, manage, and maintain, and all system implementations typically include three components:
1. Strong malodorous gas enters 2. Installs a plasma system 3. Discharges clean air by ionization
Air Cleaner: The equipment required for air treatment is custom designed and the number of ion generators according to the amount of air, the type and concentration of pollutants, the air enters the clean box, and the movable frame and control system are designed for easy maintenance and control. Used to monitor the ionizer for proper operation. Ionized air emissions are emitted from clean tank ionized air using existing piping systems or other facilities.
Plasma air purification system powerfully reduces the smell of hydrogen sulfide and related corrosion, no chemicals, carbon, additives, or hazardous waste disposal, clean air, providing workers with a healthier working environment, easy to install to existing plants Equipment, from small to large processing facilities.
等离子空气净化系统工作原理图
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