ECOGRACE filter press maintenance & repair department is committed to providing a first class service and to improve the availability and reliability of all filter presses – a professional approach coupled with a high degree of knowledge and experience, with skilled specialist engineers, are pre-requisites for first class service.
Steps Involved In Filter Press Processes Ara Followed :
Closing Of the Filter Presss
As the filter is completely empty, the moving head is activated by the jacks that clamps the plates. The closing pressure is self-regulated through the filtration.
During this short phase, the chamber is filled with the sludge or slurry to be filtered. The filling time depends on the flow of the feed pump. For sludge of good filterability, it is best to fill the filter quickly to avoid caking in the first chamber before the last ones are filled.
Once the chambers are filled, further input of sludge increases the pressure from the increasingly thicker layer of filtered sludge on the cloths. The filtration can then be stopped manually, by a timer, or, more conveniently by a filtrate flow indicator automatically when no more filtrate is passing through.
Filter Opening : The moving head is drawn back to disengage the first filtration chamber. The cake is released by its own weight. A mechanized system pulls out the plates one by one, the speed of which can be adjusted for the cake texture.
Washing : Washing the Filter cloth should be done every 15-30 runs. For mid or large units, this can be done on the press itself using high pressure water sprays (80-100 bar). However, the washing requirements will depend on the type of sludge.
Zhejiang Grace Envirotech Co., Ltd.with the famouse brand "ECOGRACE", is one of the subsidiary of Grace Filter MFG ,based in U.K ,and developed in China .