Concentration tank

Introduction of concentration tank
Thickening tank, sewage treatment concept, also known as sludge thickening tank. Generally, it adopts the shape of vertical flow or radial flow. It can be divided into intermittent operation and continuous operation. The former is mainly used in small sewage treatment plants or sewage treatment plants of industrial enterprises, while the latter is used in large and medium-sized sewage treatment plants. The form of continuous gravity concentration tank is the same as that of radial flow sedimentation tank. It can be divided into three types: sludge scraper and sludge mixing device, without sludge scraper and multi-layer concentration tank.

Application Fields of concentration tank

High efficiency concentrator is widely used for processing slime, waste water and waste residue in metallurgy, mining, coal, chemical industry, building materials industry, environmental protection and other departments. It can improve the utilization rate of return water and bottom flow concentration, which also has important significance for environmental protection.

Features of concentration tank
1. Strong sludge storage capacity and low power consumption.
2. The concentration speed is fast, the floor area is small, and the mud scraping is convenient.
3. The required hardware is not complex and the cost recovery is faster.

The thickener has continuous and intermittent operation modes. Continuous operation refers to continuous sludge feeding and continuous sludge discharge, which is relatively easy to achieve in large-scale sewage treatment plants. Small sewage treatment plants can only intermittently feed and discharge sludge, because the primary sedimentation tank can only operate intermittently. Continuous operation can keep the sludge layer stable, which is beneficial to the thickening effect. The treatment plant that cannot operate continuously should "frequently enter and discharge" to make the operation as continuous as possible. Of course, this largely depends on the sludge discharge operation of the primary sedimentation tank. When "frequent discharge" is not possible, at least timely sludge discharge shall be ensured, and each time sludge discharge must not be excessive, otherwise the sludge discharge speed will exceed the concentration speed, making the sludge thinner and damaging the sludge layer.