Solve the problems in the use of belt sludge filter press

      The main reason is that the belt type sludge press filter can not press the mud and the concentration of the mud is low.

Sludge concentration, often called sludge solids content, sludge solids content is less than 1%, direct mechanical sludge dewatering effect is not ideal, and the need for flocculant increased.

If the concentration of domestic sludge or sticky industrial sludge is less than 1% into the belt filter press, it will lead to mud leakage, not mud pressure, and low treatment efficiency.

The traditional method is to increase the sludge thickening tank.

Centrifuged sludge thickener has a good solution to this problem. After the sludge thickener concentrates, the sludge concentration can be increased to about 3.5-11%. It is very suitable to enter the belt filter press for filtration and dehydration process, so as to avoid the situation of mud leakage caused by the low sludge concentration.

In some large sewage, sludge solid content is low, such as domestic sewage has been widely used.

The flocculation effect of sludge is not ideal.

The belt type pressure filter dehydrator is more dependent on the quality control.

If the dosage is insufficient and the conditioning and conditioning effect is poor, the capillary water in the sludge cannot be converted into free water and removed in the gravity zone, so the sludge from the mold zone into the low-pressure zone is still fluid and cannot be extrudated.

On the contrary, if the dosage is too large, the first is to increase the treatment cost, and more importantly, due to the increase of sludge viscosity, it is easy to cause the filter belt to be blocked.

For municipal sewage mixed sludge, when cationic PAM is used, the dosage of dry sludge is generally 1 ~ 1Okg/t, which can be determined by the test or adjusted repeatedly in operation.

Aging or improper selection of press cloth.

There are dozens of filter belts used for sludge dewatering.

Each filter varies in porosity, water permeability, air permeability, and woven texture.

Used for sludge thickening screen and pressure filter screen is also different.

Selecting the right sludge dewatering net can improve the moisture content of sludge cake and the working efficiency of filter press.

In special cases, the relationship between the yield of mud cake and the effluent water quality should be considered.

The selection of the filter cloth should fully consider the nature of the sludge, and combine the permeability and porosity of the sludge dewatering net.

Such as: viscosity, water permeability and so on.

The poor selection of press cloth directly leads to high moisture content of mud cake, mud running and mud leakage.

Lower mud yield.

For more selection questions and attention, please refer to the sludge dewatering page.

      Doyen specializes in providing belt press equipment for the Southeast Asian market. Welcome to visit our workshop and formulate a more scientific  plan based on the actual situation of your company. Welcome to visit joyce@doyenchina.com or visit https://www.doyenchina.com.