Filter press equipment is required in urban sludge treatment projects

         Sludge is a by-product of sewage treatment and has a considerable output. The sludge contains water and solid matter, mainly the suspended matter intercepted and the product transformed from the treated colloidal matter and dissolved matter. The sludge accumulates pollutants in the sewage, and also contains a large number of bacteria and parasite eggs, so it must be properly treated to prevent secondary pollution.

Nowadays, a large amount of unstabilized sludge has become a heavy burden for urban sewage treatment plants and a great threat to the environment. In the construction of urban sewage treatment plants, it is necessary to configure filter presses, consider the outlet of sludge, and reduce the impact of sludge. Environmental pollution.
The composition of sludge mainly depends on the sewage water quality, treatment process and method. The composition of sludge mainly depends on the sewage water quality, treatment process and method. There are mainly the following types of sludge: primary sedimentation tank sludge, secondary sedimentation tank sludge, grid slag, sand sedimentation and scum. The sludge in the primary sedimentation tank is mainly composed of organic matter, and the sludge in the secondary sedimentation tank contains organisms and chemicals. The sludge contains a lot of water. The water content of the sludge in the sedimentation tank is generally above 95%. The water content can greatly affect the volume of the sludge. If the water content is reduced from 99.5% to 95%, the sludge volume can be reduced to the original 1/10.

The characteristic of the membrane filter is that it can perform secondary drying and pressing of the filter cake. The special design of its filter chamber allows it to automatically close the feed valve after the filter chamber is filled with the filter cake, and pass gas or liquid into the filter chamber. Make the filter cloth swell and deform, so as to achieve the effect of secondary pressing on the filter cake, and further reduce the moisture. Further gas is introduced to further reduce the moisture in the filter cake. The high-pressure air passes through the filter cake to separate the capillary water and structural water in the filter cake. This is the blow drying method.
From the perspective of urban sewage treatment, Tao Yang believes that the recycling of urban sewage is an important issue in water-scarce areas, because urban sewage has been proven to be a reliable water resource. With the advancement of water treatment technology, sewage regeneration technology has been Widely used. In this case, the structure of the filter press adopts hydraulic compression and automatic pressure holding devices, which can produce filter cakes with higher solid content through the pressure generated during filtration. The operation process is simple and safe. , And the automation procedure is high, save time and effort, reduce cost.

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