Is it necessary to cover and deodorize sewage treatment?
1. Is it necessary to cover and deodorize sewage treatment?
The capping of the sewage pool not only realizes the environmentally friendly production of the enterprise, but also avoids the pollution and damage to the local environment during the production process. Especially in sewage treatment plants, industrial wastewater stations, etc., the odorous gases discharged during the wastewater treatment process seriously pollute the local ecological environment, and have a serious impact on the lives of surrounding enterprises and the people. out of hand. Therefore, it is a wise choice to cover the areas with serious waste gas and wastewater pollution such as sewage pools.
The malodorous gas in sewage treatment is mainly produced in the sewage pumping station, the inlet grille, the aeration sedimentation tank, the sludge treatment facility and the sludge concentration, dehydration and drying, transfer, heat during the sludge treatment process. Drying, composting, etc. Different treatment facilities and processes produce a variety of odorous gases.
Covering and deodorizing the waste odor gas in the sewage pool is an environmentally friendly treatment method, and by capping the sewage pool, the surrounding environment is effectively protected, and the purpose of purifying the waste odor gas in the sewage pool is achieved.
2. Sewage treatment capping method
There are two ways to add a cover, one is to add a high cover, and the other is to add a low cover. The specific method of raising the cover is to add a large cover with a height of about 1 to 5m on the structure to be covered, and cover all the pool surfaces and equipment inside (the outside of the walkway board may not be covered inside); The specific method of the cover is to add a cover with a height of no more than 2m on the water surface of the structure, expose all the walkways and equipment outside the cover, and cover only the sewage water surface.
The pool body adopts high cover, which can reserve enough maintenance space for the internal equipment. For areas with many internal moving equipment and heavy maintenance tasks, the form of high cover should be adopted.
The pool body is sealed with a low cover to reduce the amount of exhaust gas, reduce equipment investment and save operating costs.
3. Sewage treatment stamping material
There are many types of capping materials, and the light-duty capping materials that are more suitable for closed sewage pools include sunshine board + steel frame, FRP + steel frame, membrane material, all PP material, and all glass fiber reinforced plastic material.
For urban sewage treatment plants with large investment and large pool spans, it is better to use new anti-corrosion film materials, while industrial enterprises use all PP or all FRP, which is more suitable. When other materials are used, the steel frame support part is inevitably placed inside the top cover, and the concentration of corrosive gases inside the pool doubles after the pool top is covered, and the temperature is very high under sunlight radiation, and the internal steel structure is extremely easy to Corrosion, the general life is 2 to 3 years, that is, the secondary construction of the entire structure is faced in a short period of time. Practice has proved that even if the steel structure is made of stainless steel, the durability in corrosive environments is still not guaranteed, and the cost is very high.
