Proposal of a new centrifugal dewatering system for slurry using electric charge of clay particles

本研究旨在开发一种新型的离心力脱水系统。本研究的主要结论如下：1)设计和制造了一种新型的离心式脱水机，提高了脱水机处理后土壤对橡胶膜的粘附性。2)通过对琵琶湖底土、卡索冈粘土、高岭土等底土的一系列实验，验证了新型脱水机的有效性。4)基于最新发展的离心应力场自固结理论，提出了离心式脱水机的设计方法。5)通过电沉积实验，证实了粘土颗粒带电对粘附性的影响。

In this research, it aimed to develop the new dewatering system which uses the centrifugal force. The main conclusions derived from this research are as follows:1) A new centrifugal dewatering machine was designed and manufactured, and it was improved in the adhesion reduction of processed soil to the rubber membrane of the system.2) The effectiveness of the new dewatering system was verified by a series of experiments using a bed soil of Lake Biwa, Kasaoka clay, and kaolin etc.3) A theory to explain the centrifugal dewatering system was formed besed on a self consolidation theory, the Mikasa Theory.4) The design method of centrifugal dewatering machine was proposed based on the newly developed self consolidation theory in a centrifugal stress field.5) The influence of an electric charge of clay particles on adhesion was confirmed by the experiments of electro-deposition.