Enhancement of activated sludge performance on ammonium removal by clinoptilolite

被引：4

作者：

Key Laboratory of Urbanization and Ecological Restoration of Shanghai, Department of Environmental Science, East China Normal University, Shanghai, 200062, China ^{[1
]}

机构：

[1] Key Laboratory of Urbanization and Ecological Restoration of Shanghai, Department of Environmental Science, East China Normal University, Shanghai

来源：

Toxicol. Environ. Chem. | 2006年 / 2卷 / 197-206期

关键词：

Activated sludge; Clinoptilolite; Petrochemical wastewater; Rehabilitation; Shock loads;

D O I：

10.1080/02772240500443944

中图分类号：

学科分类号：

摘要：

This study evaluated the influence of clinoptilolite on the performance of activated sludge system shocked by high concentration of ammonium. The ammonium and chemical oxygen demand (COD) removal from the experimental reactor containing clinoptilolite and from the clinoptilolite-free control reactor was determined. The ammonium and COD removal was approximately 8 and 20% higher in the experimental reactor than in the control reactor, respectively. The removal increased with an increase in clinoptilolite concentration over the tested range up to 50 mg L-1. The presence of clinoptilolite resulted in the sludge flocs being more compacted with smoother surfaces and edges. Molecular biological analysis revealed that clinoptilolite increased the DNA diversity, richness, and evenness of sludge microbes. The enhanced-performance activated sludge previously treated with clinoptilolite was less influenced by the shock of ammonium than non-treated sludge in terms of the ammonium and COD removal. These results suggest that clinoptilolite enhanced the performance of activated sludge system in the removal of ammonium and COD. Amendment of activated sludge with natural zeolites may thus improve the efficiency of wastewater treatment. © 2006 Taylor & Francis.

引用

页码：197 / 206

页数：9

共 12 条

[1]

Tsitsishvili G.V., Andronikashvili T.G., Kiron G.N., Filixova L.D., Natural Zeolites, 1st Ed., pp. 1-33, (1992)

[2]

Ahn D.H., Chung Y.C., Chang W.S., Use of coagulant and zeolite to enhance the biological treatment efficiency of high ammonium leachate, J. Environ. Sci. Health-Part A. Toxic/Hazard. Substances and Environ. Eng., 37, pp. 163-173, (2002)

[3]

Mabel V.M., Raymundo L.C., Ronald G., Et al., Heavy metal removal with Mexican clinoptilotite: Multi-component ionic exchange, Water Res., 35, pp. 373-378, (2001)

[4]

Michal G., Adriaan M., Ori L., Sheldon T., Biological-ion exchange process for ammonia removal from secondary effluent, Water Sci. Technol., 34, pp. 449-458, (1996)

[5]

Semmens M.J., Kleive J., Schnobich D., Tauxe G., Modelling ammonium exchange and regeneration on clinoptilotite, Water Res., 15, pp. 655-666, (1981)

[6]

Nguyen M.L., Tanner C.C., Ammonia removal from wastewaters using natural New Zealand zeolites, N Z J Agric. Res., 41, pp. 427-446, (1998)

[7]

Jung J.Y., Pak D., Shin H.S., Chung Y.C., Lee S.M., Ammonium exchange and bioregeneration of bio-flocculated zeolite in a sequencing batch reactor, Biotechnol. Lett., 21, pp. 289-292, (1999)

[8]

Standard Methods for Examination of Water and Wastewater. 18th Ed., (1992)

[9]

Xie B., The analysis of effect zinc on activated sludge microbes by Random Amplified Polymorphism DNA (RAPD), Intern. J. Environ. Pollution, 21, pp. 533-547, (2004)

[10]

Piirtola L., Hultman B., Lowen M., Effects of detergent zeolite in a nitrogen removal activated sludge process, Water Sci. Technol., 38, pp. 41-48, (1998)

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