Application analysis of sludge dryer in sewage treatment plant

In recent years, with the strict environmental protection policy, China vigorously advocates the concept of circular economy, and the awareness of waste reuse, clean production, environmental protection, etc. has gradually become popular. People pay more and more attention to the treatment and resource utilization of sewage sludge which is closely related to our daily life. Sewage sludge dryer is a large-scale mechanical equipment that we often see in the drying market. It can be used for dehydration and drying of high humidity and high viscosity materials.

There are many kinds of sludge dryers in sewage plants, such as the common multi return sludge dryers in the market, special cylinder structure and upgraded internal devices, which can not only meet the requirements of users for moisture content, daily output and drying quality, but also save energy and protect the environment during operation, greatly reducing the operation cost of the equipment. The water content of sludge treated by sewage sludge dryer is greatly reduced, which is not only convenient for transportation, but also conducive to storage. Generally speaking, the dried sludge has the following application advantages:

1. As the economic value of the dried sludge is greatly improved, it can be sold again to improve the economic benefit of the enterprise.

2. The sludge dryer of sewage treatment plant can effectively solve the problem of long-term accumulation of sludge in sewage treatment plant, emitting odor and polluting the environment. In the process of high-temperature drying, it can oxidize organic matter and kill microorganisms.

3. The dried sludge can be mixed with other fuels to save energy consumption and increase economic benefits.

4. After drying and burning, the sludge can be further processed into ceramsite.

5. The drying products can be made into additives to improve the hardness and compressive strength of brick.

6. The dried sludge can be made into additive for cement plant to improve the performance of cement.

7. The dried sludge can be used for land use to improve land performance.

Application characteristics of sludge dryer in sewage treatment plant

1. The material in the cylinder moves to and fro under the action of the plate. The drying mode of three-step and two-step is specially adopted, which makes the dry material move first and the wet material move later, so as to achieve the purpose of even drying.

2. The sludge dryer of sewage treatment plant has high automation and more flexible operation. Only one or two people are needed to complete the drying operation, which greatly saves the labor cost.

3. The daily output can reach more than 100 tons, which can be applied to industrial scale drying of high humidity and high viscosity materials.

4. The sludge dryer with three-layer drum structure not only has fast drying speed and high utilization rate of heat energy, but also has good thermal insulation performance and less heat loss.