METHOD AND DEVICE FOR CLEANING FILTER CLOTHS OF FILTER PRESS DEWATERER

摘要

An object is to provide a method and a device for cleaning a filter cloth of a filter press dewaterer that are capable of restoring a filter cloth by effectively cleaning the filter cloth while saving the amount of water used for cleaning without using an acid which requires wastewater treatment. The method is for cleaning a filter cloth of a filter press dewaterer, which dewaters a slurry containing a calcium component, with any one of water, steam, and a mixture thereof. The filter cloth is cleaned by spraying, on the filter cloth to which a tension of 10 to 2000 N/5cm is applied, any one of: water with a temperature of 100 to 140°C and a pressure of 50 to 200 kg/cm 2 ; steam with a temperature of 100 to 140°C; and a mixture thereof.