Design Calculations on the Recycle of Malysite in Sludge under the Synergistic Effect of Acidification and Ultrasonic

Abstract:

During the recycle process of malysite in sludge under the synergistic effect of acidification and ultrasonic, the features of malysite, the principles and steps of design calculations for sludge malysite are introduced on the basis of the previous experimental data. According to the function, the design process can be classified into pretreatment unit, coagulation treatment unit, malysite recovery unit, sedimentation and filtration unit. Design calculations are conducted in the light of the requirements on design flow, cycle time, influent water quality, material and experimental data. Design calculations and selections as well as device construction are accomplished based on the design criterion of water treatment. Ultimately, the parameters of each treatment unit responding to the design process are obtained through the experimental validation by means of the constructed experimental device.

• Periodical: Advanced Materials Research (Volumes 204-210)
• Pages: 796-801
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.204-210.796
• Online since: February 2011
• Authors: Bo Zhou, Nai Rui Liu, Lei Lei Mi
• Keywords: Acidification, Malysite, Recycle, Synergistic Effect, Ultrasonic

References

[1] Abdo M. S. E, Ewida K. T, and Youssef Y, Recovery of alum from wasted sludge produced from water treatment plants, Journar of Environmenatl Science Health, Vol. A28, No. 6, pp.1205-1216 (2000).

DOI: 10.1080/10934529309375937

[2] Cornwell D. A, Cline G. C, and Przybyla J. M, Demonstration testing of alum recovery by liquid ion exchange, AWWA, Vol. 73, No. 6, pp.326-332 (1981).

DOI: 10.1002/j.1551-8833.1981.tb04722.x

[3] Prakash P, and Sengupta A. K, Selective alum coagulant recovery from water treatmentplant residuals using donnan membrance process, Environmental Science and Technology, Vol. 37, No. 19, pp.4468-4474 (2003).

DOI: 10.1021/es030371q

[4] Petruzzlli D, Volpe A, Limoni N, and Passino R, Coagulants Removal and Recovery from Water Clarifier Sludge, Water Research, Vol. 34, No. 7, pp.2177-2182 (2000).

DOI: 10.1016/s0043-1354(99)00357-7

[5] Francois R J, Structure on hydroxide flocs, Water Research, Vol. 19, No. 10, pp.1249-1254 (1985).

[6] January Bien, and Lidia Wolny, Changes of some sewage sludge parameters prepared with an ultrasonic field, Wat. Sci. Tech, Vol. 36, No. 11, p.101–106 (1997).

DOI: 10.2166/wst.1997.0399

[7] Harrison S L, Bacterial cell disrruption: a key unit operation in the recovery ofintracenular products, Biotechno1 Adv, Vol. 9, No. 11, pp.217-240 (1991).