[논문]POTABLE WATER TREATMENT BY POLYACRYLAMIDE BASE FLOCCULANTS, COUPLED WITH AN INORGANIC COAGULANT

Bae, Young-Han; Kim, Hyung-Jun; Lee, Eun-Joo; Sung, Nak-Chang; Lee, Sung-Sik; Kim, Young-Han

doi:10.4491/eer.2007.12.1.021

[국내논문] POTABLE WATER TREATMENT BY POLYACRYLAMIDE BASE FLOCCULANTS, COUPLED WITH AN INORGANIC COAGULANT 원문보기

Environmental engineering research, v.12 no.1, 2007년, pp.21 - 29

Bae, Young-Han (Department of Chemical Engineering, Dong-A University) , Kim, Hyung-Jun (Department of Chemical Engineering, Dong-A University) , Lee, Eun-Joo (Department of Chemical Engineering, Dong-A University) , Sung, Nak-Chang (Department of Environment Engineering, Dong-A University) , Lee, Sung-Sik (Department of Chemical Engineering, Dong-A University) , Kim, Young-Han (Department of Chemical Engineering, Dong-A University)

Abstract ▼ AI-Helper

For this study, we polymerized polyacrylamide base flocculants (PAA) and tested their properties and settling efficiency as a treatment for potable water. The most common chemicals for potable water treatment in Korea are alum or PAC. However, due to various reasons (such as rainy season or algae), inorganic flocculants cannot be solely depended on to solve all the problems caused by the poor quality of inflow water. When PAA coupled with coagulants in a potable water purification process is used, the turbidity removal efficiency increases by a factor of three on a single chemical system using PAC (Raw water: 5.21 NTU; Treated PAA+PAC: 0.34 NTU; and, Treated PAC: 1.04 NTU). It is possible to offset the toxic effect of residual monomers in treated water using PAA, because the concentrations of residual acrylamide are less than 400 mg/L in the polymer itself and less than $0.04\;{\mu}g/L$ in the treated water base at a dosage of 0.1 mg/L. Therefore, PAAs may be a workable, and dependable, potable water treatment process for the high pollutant level of resource water.

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제안 방법

All tests were performed with a six cube jar test on a 1 L beaker. The rapid mixing time for coagulant was 5 min at a paddle speed of 200 rpm.
PAC as an inorganic coagulant, polyamine as an organic coagulant, and PAA were used in the experiments. Coagulants were collected from different drinking water treatment plants in Korea.

대상 데이터

Coagulants were collected from different drinking water treatment plants in Korea. PAC (Poly Aluminum Chloride [Ak(OH) nCl6-n]m, 17w% AI2O₃) used in this study was produced by Gyung-gi Chemicals, Korea. Poly amine (FL-17 PWG) and polyDADMAC (FL- 45C), as cationic polymer coagulants, were produced by SNF, France.
Poly amine (FL-17 PWG) and polyDADMAC (FL- 45C), as cationic polymer coagulants, were produced by SNF, France. Polyacrylamide-type polymers were produced by Eyang chemical Co., Ltd., Korea, and were polymerized in the laboratory as an anionic polymer (Aseries; copo lymer acrylamide /Acrylic acid, APAA), a cationic polymer (Cseries; copolymer acry lamide/ trimethyl ammonium ethyl acrylate chloride, CPAA), and a nonionic polymer (N series; acrylamide homopolymer, NPAA).

참고문헌 (11)

Lee, S. H., Shin, M. C., Choi, S. J., Shin, J. H., and Park, L. S., 'Improvement of flocculation efficiency of water treatment by using polymer flocculants,' Environ. Technol., 19, 431-436 (1998)

상세보기
SNF Handbook, 'For drinking water,' 4-7 (2002)
Chang, E. E., Cjiang, P. C., Chao, S. H., and Liang, C. H., 'Effect of polydiallyldimethyl ammonium chloride coagulant on formation of chlorinated by products in drinking water,' Chemosphere, 39(8), 1333-1346 (1999)

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AWWA standard for poly (diallyldimethyl ammonium chloride), AWWA B451-87, AWWA, Denver, Colo. (1987)
Hanson, H., Perter, A., and Saxena, J., 'The regulatory framework for the control and use of organic, polyelectrolytes in drinking water, AWWA Sunday Seminar. Proc., 1983 AWWA Ann. Conf., Las Vegas (1983)
AWWA standard for Polyacrylamide, American water works association, p. 5 (1996)
Mallevialle, J., Bruchet, A., and Fiessinger, F., 'How safe are organic polymers in water treatment?,' J. AWWA, November, 87-97 (1990)
Kawamura, S., 'Effectiveness of natural polyelectrolytes in water treatment,' J. AWWA, October, 88-91 (1991)
Kim, J. S., Kim, J. G., and Choi, J. G., 'Study for flocculant to improve the efficiency of drinking water treatment,' 98 Annual Seminar in Seoul, NIER, 221-269, (1998)
Chemicals used for treatment of water intended for human consumption-cationic polyacrylamide, Ref. No. EN 1410:1998 E, European Committee for Standardization (1998)
Lee, S. H., Shin, W. S., Choi, J. H., Choi, S. J., Park, L. S., Pang, P., and Englezos, P., 'Polyamine Flocculants for the Enhancement of Flocculation Efficiency in Drinking Water Treatment,' Environ. Eng. Res., 9(2), 58-65, (2004)

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