Journal of Engineering and Manufacturing Technology
ISSN: 2053-3535
Vol. 6(1), pp. 1-7, March 2018

Study on modular design and key technology of screw pressing for sludge treatment system

Qu Qingwen*, Hu Xiaoqing, Lin Chunmei, Zhang Dejun and Li Ya

Yantai Nanshan University, Machinery Department, Yantai Longkou Shandong, P. R. China.

*To whom correspondence should be addressed. E-mail:

Received 13 February, 2018; Received in revised form 05 March, 2018; Accepted 09 March, 2018.


Sludge treatment, Modular design, Screw press, Spiral blade.

In this study, the method of modular design was formed based on the requirement of modern sludge treatment system. The process of sludge treatment was studied, the operation parameter control points were analyzed and the theoretical basis was provided for each process design. The characteristics of the process of sludge dewatering were evaluated, and the function module tree based on screw press was established. The design of spiral extrusion equipment was serialized, universalized and modularized. The design model of spiral blade with known parameters such as production capacity, compression ratio and product dryness was established, and the basic structure and serial modules of spiral shaft were obtained. The design basis and characteristics of other modules were planned and the complete module design library was formed. According to the characteristics of sludge and production requirements, the database is called to combine to form the equipment.

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