Why does the sludge dewatering machine have uneven blanking?
- 2019-06-21-

Hangzhou Co., Ltd. popularizes the reason for the uneven blanking of the sludge dewatering machine?

The phenomenon of uneven blanking is as follows: the whole filter piece is uneven in the longitudinal direction, and there are obviously convex long filter pieces. The main reason for this is that the baffle effect of the feeding device is not good enough. Although this has little effect on the overall dehydration efficiency of the system, according to site conditions, some filter cakes have a thickness of more than 10. , There is a hidden danger in the partial dehydration efficiency of the filter cake that is too thick. To solve this hidden danger, we must work hard on the design of the feeder. It is recommended to adopt fishtail baffle method, that is, one feed pipe becomes two feed pipes, and two feed pipes become four feed pipes. After two splits, it passes through baffles and distributors. Generally, it can Achieve a good blanking effect. Compared with the main filtration process, pretreatment or post-treatment processes such as flocculation, coagulation, and hydraulic pressing are equally important for determining (and sometimes controlling) the time of the entire separation process. In order to find out possible "bottles", it is important to determine the operating time required in each stage of the separation process, especially for systems with strict dehydration and washing requirements. Many process requirements can be cited. Examples of the use of the filter. Before selecting equipment, when performing filtration experiments with small filtration equipment, it is necessary to understand the time occupied by each stage for process design. If this problem is not handled well, the design will not be rationalized.

However, it is very disappointing that this information may not always be available, resulting in the choice of equipment with relatively little relevant data. The successful choice of separation method is closely related to the choice and use of filter media. For the solid-liquid separation system in large-scale industrial-scale processing, there are more uncertain factors. It is difficult to link the interaction between particle collisions and the pore size of the filter medium. 9 It is impossible for all the deposited solid particles to remain on the surface of the filter medium. The sediment can penetrate into the filter medium or the pores of the membrane, resulting in an increase in the resistance of the filtrate to flow through the filter medium, and gradually block all flow channels. Assuming that all the pores of the filter medium are smaller than the small particles in the processed mixture, the above situation can be avoided.

Among them, the cl-hanli in the filter is a heavy N indicator of #GG amp;3111 desulfurization system. The general concern is the dehydration rate, so the cl-inclusion is not given due attention. In order to achieve the dehydration rate, the supplier will also deliberately reduce the use of the filter rinse water, which will cause the CL one in the filter to exceed the standard.