Van filter operation process is periodic. In addition to filter pulp inputs, also includes filter also filters and filtration compaction, washing, removing the cake, filter cloth washing machines and support equipment. Therefore, research should be conducted on the basis of optimum operating conditions on an operating cycle. The calculation methods are mainly two types, one is the reference to foreign practices, the filter and the filter stage compaction calculated separately, a filter press with conventional Ruth stage calculation formula, filter wholesale, filtered compaction stage filtration compaction formula, the critical point is calculated using the formula of the critical point; the other is the filter and filter compaction two stages combined, calculated using a filter press equation. Filter: flocculation sludge belt filter presses swap unsatisfactory quality stronger dependence. If the dosage is insufficient, quenching effect is poor, capillary water sludge can not be converted into the free water is off in the gravity zone, which continued to show a flow of sludge into the low pressure area formed by the molding area, membrane filter press machine, can not be squeezed. Conversely, if the dosage is too big filter, first increasing treatment costs, and more importantly, because the sludge viscosity increases, can easily cause belt filter is clogged. For the urban sewage sludge mixed, filter before selling, when cationic PAM, Xinxiang filter, dry sludge dosage is generally 1 ~ 1Okg / t, specifically determined by the test, or repeated adjustments in the operation. Xinxiang filter, the new Seoul environmental, belt filter press provided by Environmental Protection Equipment Co., Ltd. Weifang Seoul. Xinxiang filter, the new Seoul environmental, belt filter press is Weifang Seoul Environmental Protection Equipment Co. (www.wfxiner.com) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, Contact: Manager Wu.