Sludge Concentration Tank

Sludge Concentration Tank

A sludge concentration tank is a kind of equipment used to concentrate sludge in the sewage treatment process, usually used in conjunction with a filter press. Its main purpose is to achieve sludge concentration through gravity sedimentation, reducing the energy consumption and cost of subsequent dehydration treatment. Sludge concentration is an important part of the sludge treatment process because the water content of unconcentrated sludge is high, and the treatment and transportation costs will increase significantly.

In terms of environmental protection, the application of sludge concentration tanks has a positive effect on reducing energy consumption and pollutant emissions during sewage treatment. The reduced volume of concentrated sludge not only reduces the cost of transportation and treatment but also reduces greenhouse gas emissions. In addition, the concentrated sludge can be further used for biomass energy recovery or as agricultural fertilizer to achieve resource recycling.

Working Principle

The working principle of the sludge concentration tank is to achieve the purpose of sludge concentration through gravity sedimentation.
Specifically, after the sludge enters the concentration tank, the heavier solid particles will gradually sink under the action of gravity, while the lighter moisture will rise to the top of the tank. In this process, the interstitial water in the sludge is gradually squeezed out, thereby reducing the volume of the sludge.

The sludge concentration tank’s main purpose is to reduce sludge volume. The main object of concentration and dehydration is interstitial water. After concentration, it provides good conditions for subsequent processing and reduces processing costs. Sludge concentration can be divided into gravity, air flotation, and centrifugal, among which gravity concentration is the most widely used.

In order to improve the effect of sludge concentration, the following measures are usually taken:

1. Appropriately extend the residence time of sludge in the tank to fully separate the water.
2. Control the feeding speed and concentration of sludge to avoid poor sedimentation effect caused by too fast feeding or too high concentration.
3. Use a stirring device to promote uniform mixing and sedimentation of sludge.

Function of Sludge Thickening Tank

Reduce volume: significantly reduce the volume of sludge, which is convenient for subsequent treatment, transportation, and disposal.

Stabilize sludge: stabilize the properties of sludge to a certain extent, and reduce the release of odor and other harmful substances.

Improve efficiency: improve the operating efficiency of the entire sludge treatment system and speed up the treatment.

Product Advantages

• Large processing capacity: improve work efficiency, clear water.
• Stable operation: stable performance, not easy to age, stable alkalinity.
• Continuous production: stable mechanical properties, can ensure 24-hour fully automatic continuous operation and production.
• Space saving: compared with other concentration methods, it takes up less space.
• Reasonable structure: reasonable structural design and easy maintenance, simple operation.
• Efficient concentration: can effectively separate the water in the sludge to achieve high-efficiency concentration.
• Corrosion resistance: usually made of corrosion-resistant materials, with good corrosion resistance.