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Wall-sticking characteristics of paper sludge

机译：纸污泥的壁挂特性

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The production of sludge has been sharply increasing in China. Drying is a good treatment method for its resource utilization, however, the process to deal with sludge inevitably generates wall-sticking phenomenon thus corrodes drying devices and reduces drying efficiency. In this paper, by applying free-falling detection, sludge adhering quantity was derived to represent the wall-sticking characteristics with respect to the influence of moisture, temperature and cathodic heat wall. The results show that paper sludge adhering quantity first rises then reduces according to the increase of moisture and reaches the peak at about 65%. Temperature tends to increase due to the joint impact of overtemperature and microbial protein to decrease the sludge adhering quantity which finally gets to a steady state. However, Sludge adhering quantity can be curtailed to acceptable twenty percent of its origin value resulted from cathodic heat wall which creates a water film isolating sludge and wall.
机译：在中国，污泥的产量急剧增加。干燥是一种很好的资源利用处理方法，但是处理污泥的过程不可避免地会产生壁粘现象，从而腐蚀了干燥装置，降低了干燥效率。在本文中，通过自由落体检测，得出了污泥附着量，以代表壁附着特性，受水分，温度和阴极热壁的影响。结果表明，随着水份的增加，污泥的附着量先增加后减少，并达到约65％的峰值。由于过热和微生物蛋白的共同影响，温度趋于升高，从而降低了污泥的附着量，最终达到了稳定状态。但是，由于阴极热壁产生的水膜隔离了污泥和壁，因此污泥的附着量可以减少到其原始值的百分之二十。

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