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CLC number: TU991.2

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Received: 2008-01-17

Revision Accepted: 2008-05-23

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Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.11 P.1576-1581


Effect of a biological activated carbon filter on particle counts

Author(s):  Su-hua WU, Bing-zhi DONG, Tie-jun QIAO, Jin-song ZHANG

Affiliation(s):  College of Environmental Science and Technology, Tongji University, Shanghai 200092, China; more

Corresponding email(s):   dongbingzhi@online.sh.cn

Key Words:  Biological activated carbon (BAC) filter, Cryptosporidium, Giardia, Particle counts, Turbidity

Su-hua WU, Bing-zhi DONG, Tie-jun QIAO, Jin-song ZHANG. Effect of a biological activated carbon filter on particle counts[J]. Journal of Zhejiang University Science A, 2008, 9(11): 1576-1581.

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journal="Journal of Zhejiang University Science A",
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%A Bing-zhi DONG
%A Tie-jun QIAO
%A Jin-song ZHANG
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%DOI 10.1631/jzus.A0820053

T1 - Effect of a biological activated carbon filter on particle counts
A1 - Su-hua WU
A1 - Bing-zhi DONG
A1 - Tie-jun QIAO
A1 - Jin-song ZHANG
J0 - Journal of Zhejiang University Science A
VL - 9
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A0820053

Due to the importance of biological safety in drinking water quality and the disadvantages which exist in traditional methods of detecting typical microorganisms such as cryptosporidium and giardia, it is necessary to develop an alternative. particle counts is a qualitative measurement of the amount of dissolved solids in water. The removal rate of particle counts was previously used as an indicator of the effectiveness of a biological activated carbon (BAC) filter in removing cryptosporidium and giardia. The particle counts in a BAC filter effluent over one operational period and the effects of BAC filter construction and operational parameters were investigated with a 10 m3/h pilot plant. The results indicated that the maximum particle count in backwash remnant water was as high as 1296 count/ml and it needed about 1.5 h to reduce from the maximum to less than 50 count/ml. During the standard filtration period, particle counts stay constant at less than 50 count/ml for 5 d except when influenced by sand filter backwash remnant water. The removal rates of particle counts in the BAC filter are related to characteristics of the carbon. For example, a columned carbon and a sand bed removed 33.3% and 8.5% of particles, respectively, while the particle counts in effluent from a cracked BAC filter was higher than that of the influent. There is no significant difference among particle removal rates with different filtration rates. High post-ozone dosage (>2 mg/L) plays an important role in particle count removal; when the dosage was 3 mg/L, the removal rates by carbon layers and sand beds decreased by 17.5% and increased by 9.5%, respectively, compared with a 2 mg/L dosage.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


[1] Blair, K., 1994. Cryptosporidium and public health. Health and Environment Digest, 8(8):61-62.

[2] Colorado Department of Public Health and Environment, 2002. Interim Enhanced Surface Water Treatment Rule (IESWTR). Guidance Handbook for Colorado Public Water Systems. http://www.cdphe.state.co.us/wq/wqhom.asp (accessed Dec. 6, 2005)

[3] Craun, C.F., Hubbs, S.A., Frost, F., Calderon, R.L., Via, S.H., 1998. Waterborne outbreaks of cryptosporidiosis. Journal AWWA, 90(9):81-91.

[4] Cui, H.M., Zhang, S.X., Chen, K.H., Zhou, D.N., Fan, K.P., Chen, Y.S., Chen, X., 2004. Application of particle counter for the water treatment in Beijing No. 9 Water Plant. Water Purification Technology, 23(3):32-37.

[5] Hall, T., Croll, B., 1997. Particle counters as tools for managing Cryptosporidium risk in water treatment. Water Science and Technology, 36(4):143-149.

[6] Hatukai, S., Ben-Tzur, Y., Rebhun, M., 1997. Particle counts and size distribution in system design for removal of turbidity by granular deep bed filtration. Water Science and Technology, 36(4):225-230.

[7] He, Y.C., Xu, C.W., 2004. Application of particle counter in BAC process. China Water and Wastewater, 20(4):71-73.

[8] Luo, Y.P., Li, N., 2000. Measurement and control of suspended substances in drinking water. Water and Wastewater Engineering, 26(3):26-31.

[9] Kenzie, W.R.M., Hoxie, N.J., Proctor, M.E., Gradus, M.S., Blair, K.A., Peterson, D.E., Kazmierczak, J.J., Addiss, D.G., Fox, K.R., Rose, J.B., Davis, J.P., 1994. A massive outbreak in Milwaukee of Cryptosporidium infection transmitted through the public drinking water supply. The New England Journal of Medicine, 331(3):161-167.

[10] Morse, A., Wilson, R., Hull, A., Simms, J., 2002. Monitoring for Cryptosporidium risk: do particle counters help. Water Science and Technology: Water Supply, 2(1):171-180.

[11] Wu, S.H., Dong, B.Z., Qiao, T.J., Zhang, J.S., 2007. Control effect of BAC filter on turbidity and particle count. China Water and Wastewater, 23(23):42-45.

[12] Yang, Y.L., Li, X., Cong, L., Li, G.B., 2003. Optimizing of water quality monitoring and removal of Pathogenic Protozoa in waterworks. Water and Wastewater Engineering, 29(6):22-26.

[13] Zhou, D.Z., Qiu, L.F., 1998. Application of ozone BAC technique in drinking water process. Chongqing Environmental Science, 20(2):41-43.

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