| 摘要 |
PURPOSE:To improve working efficiency by providing pressing plates facing each other, executing intermittent high-pressure dehydration and disposing a gravity dehydration sludge hopper and feeding mechanism. CONSTITUTION:Two sheets of the pressing plates 7a, 7b facing each other are provided and the sludge sandwiched between filter cloths 5a and 5b is fed therebetween, by which the intermittent high-pressure dehydration is executed. The sludge supplied first to a mixing tank 1 is mixed and is fed to a gravity dehydration section 2 from which the sludge is intermittently supplied onto the belt-like filter cloth 5a through the sludge hopper 3 and the feeding mechanism 4. The sludge is subjected to the low-pressure dehydration between another filter cloth 5b and filter cloth 5a and is fed to the high-pressure dehydration section 7 to execute relatively the intermittent operation so that said dehydration is connected to the high-pressure dehydration of the plates 7a, 7b. The low- pressure dehydration and high-pressure dehydration are efficiently executed by the mechanism 4 and therefore the sludge treatment efficiency over the entire part is improved.
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