General Information
    • ISSN: 2010-0264
    • Frequency: Bimonthly (2010-2014); Monthly (Since 2015)
    • DOI: 10.18178/IJESD
    • Editor-in-Chief: Prof. Richard Haynes
    • Executive Editor: Ms. Nancy Y. Liu
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Editor-in-chief
The University of Queensland, Australia
It is my honor to be the editor-in-chief of IJESD. The journal publishes good papers in the field of environmental science and development.
IJESD 2014 Vol.5(6): 551-556 ISSN: 2010-0264
DOI: 10.7763/IJESD.2014.V5.544

Industrial Wastewater Treatment Using High Rate Activated Sludge and Alum Additive

Mamdouh Y. Saleh, Gaber El Enany, Medhat H. Elzahar, and Mohamed Z. Elshikhipy
Abstract—The high rate activated sludge stage of the multiple-stage sludge treatment plant is characterized by high efficiencies of treatment, cost, and size, compared to conventional activated sludge treatment plants. A pilot plant with an industrial discharge flow of 135L/h was designed according to the highly loaded activated sludge stage (A-stage). The plant simulated the biological and chemical treatment of sludge by adding alum to the aeration tank in dosages of 100, 150, 200 and 250 mg/L. The results clearly indicate that the highly-loaded activated sludge, the A-stage of the absorption/bio-oxidation system, has a high efficiency for the elimination of organic and inorganic matters. Without adding aluminum salt, the chemical oxygen demand, the total phosphate and the total nitrate were approximately 52.43%, 47.82%, and 40.09% respectively. The chemical-biological process with a dosage of 200mg/L alum resulted in 76.07% reduced chemical oxygen demand and improved efficiency of phosphate and nitrate removal to 73.5% and 66.98% respectively compared with the biological process in the A-stage.

Index Terms—Alum, COD, industrial wastewater, nitrate, phosphate.

Mamdouh Y. Saleh, Medhat H. Elzahar, and Mohamed Z. Elshikhipy are with the Civil Engineering Department, Faculty of Engineering, Port Said University, 42523 Port Said, Egypt (e-mail: mamsaleh29@yahoo.com, melzahar@yahoo.com, eng-moh-zak@hotmail.com).
Gaber El Enany is with the Physical Chemistry, Physical and Mathematical Engineering Department, Faculty of Engineering, Port Said University, 42523 Port Said, Egypt (e-mail: gaber71@hotmail.com).

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Cite:Mamdouh Y. Saleh, Gaber El Enany, Medhat H. Elzahar, and Mohamed Z. Elshikhipy, "Industrial Wastewater Treatment Using High Rate Activated Sludge and Alum Additive," International Journal of Environmental Science and Development vol. 5, no. 6, pp. 551-556, 2014.

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