Filter washing process:
In the process of filtering the amount of residue in the water retained by the filter material is increasing, leading to the loss of pressure through the filter material also keeps growing. After a filter cycle is determined by the difference between the pressure delta P = 15 input / output, filter material layer capable of working out then need to conduct filtering material washed. When clean the filter, water and gas mixture under pressure backflow pipe from bottom to top through the filter material will lead to residue and into collection hopper, residue will be collected and taken on water reservoirs leachate to continue to pump up the process.
the system of KLH XLNT DNK station is shown in Figure 9 as follows:
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