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+86-757-8633-0278
Email:doyen@doyenchina.com
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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.
Feb-11-2021
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