What are the thickening methods and advantages of sludge thickener?

The concentration methods of sludge thickener include air flotation concentration method, gravity concentration method, centrifugal concentration method, etc. it can reduce capital investment and land occupation, and reduce the emission of odor and phosphorus. The following describes the "concentration methods and advantages of sludge thickener".

1、 Thickening method of sludge thickener

1. Air flotation concentration method

Air flotation concentration is a method to release the gas dissolved in water in the form of micro bubbles, and can quickly and evenly adhere to the sludge solid particles, so that the density of solid particles is less than that of water and float upward, so as to achieve the separation of solid particles and water.

2. Gravity concentration method

Gravity concentration makes use of the relative density difference between solid particles and water in sludge to realize sludge concentration. If the gravity concentration method is adopted, the moisture content can be reduced from 99,2% - 99,6% to 97% - 98%. For the sewage treatment plant with primary sedimentation tank and secondary sedimentation tank, the two kinds of sludge can be mixed for gravity concentration.

3. Centrifugal concentration method

The principle of centrifugal concentration method is to concentrate by using different centrifugal force due to different specific gravity of solid and liquid in sludge. It is suitable for biological and chemical sludge of large and medium-sized sewage treatment plants.

4. Belt gravity concentration method

Belt gravity concentration method is a mechanical concentration method using belt gravity thickener. During operation, it will be affected by macromolecules in sludge, and the humidity is high, so it needs to be operated carefully.

2、 Advantages of sludge thickener

1. Reduce infrastructure investment and land occupation

2. Reduce odor and phosphorus emissions

3. Reduce the burden of subsequent treatment

4. Increase the capacity of sludge dewatering or deep dewatering equipment

The above is the introduction of "concentration methods and advantages of sludge thickener". Please feel free to contact us if you have any questions.