Belt type filter press belt press filter dewatering process can be divided into the pretreatment, gravity dehydration, wedge area preloading dewatering and squeezing the four important stages of technology using the new equipment filter program-controlled automatic box filter press, membrane filter press, filter press sludge dewatering depth, the integration of sewage sludge treatment equipment, on-line precision filtration system such as the price is reasonable, reliable performance of the environmental protection filter products.