Influence of NF on distribution system biostability

Journal - American Water Works Association - Tập 91 Số 6 - Trang 76-89 - 1999
Isabel C. Escobar, Andrew A. Randall

Tóm tắt

In a 12‐month study, nanofiltration achieved high percentages of BDOC removal but was less effective in reducing AOC concentrations.When biodegradable organic matter is not removed during water treatment, bacteria may proliferate in the distribution system. This bacterial growth can deteriorate water quality, accelerate pipe corrosion, and potentially increase the incidence of bacteriological diseases. This project's main objective was to collect and analyze full‐scale system data on long‐term results of nanofiltration (NF) with respect to its effect on bacterial regrowth potential as quantified by assimilable organic carbon (AOC) and biodegradable dissolved organic carbon (BDOC). One of the major observations over the sampling period was that NF had a strong effect on the BDOC concentration of the treated water. In contrast, NF did not reject the major fraction of AOC, which leaves NF's effect on biostability open to question.

Từ khóa


Tài liệu tham khảo

Agbekodo K., 1994, Performance de la Nanofiltration Pour l'Elimination de la Matière Organique Naturelle. Essais sur l'Usine de Mery sur Oise, Sci. Eau, 7, 183

10.1016/S0043-1354(97)00070-5

10.1002/j.1551-8833.1990.tb06995.x

10.1080/09593339409385460

Najm I.et al.Case Studies of the Impacts of Treatment Changes on Biostability in Full‐Scale Distribution Systems (Unpubl.).

10.2166/wst.1991.0036

10.1080/08927019309386235

Kooij D., 1990, Drinking Water Microbiology

Servais P.et al.Bacterial Regrowth in Distribution Systems.Proc. 1993 AWWA WQTC Miami.

Stanfield G.&Jago P.H.Development and Use of a Method for Measuring the Concentration of Assimilable Organic Carbon in Water.WRC Envir. Rept. PRU1628‐M (1987).

10.1002/j.1551-8833.1992.tb07305.x

10.1128/AEM.53.12.2714-2724.1987

10.1128/aem.57.3.857-862.1991

10.1016/0043-1354(91)90196-W

Lynch S.C., 1987, Evaluation of Reverse Osmosis to Concentrate Organic Contaminants From Water, Advances in Chem. Series, 241, 437

10.1002/j.1551-8833.1996.tb06558.x

10.1128/AEM.59.5.1526-1531.1993

1995, Standard Methods for the Examination of Water and Wastewater.

Kaplan L.A., 1989, Nutrients for Bacterial Growth in Drinking Water: Bioassay Evaluation. EPA/600/2‐89/030

Joret J.C., 1986, Méthode Rapide d'Evaluation du Carbone Eliminable des Eaux par Voie Biologique, Trib. Cebedeau, 39, 3

Taylor J.S.Personal communication(1998).

Hiemstra P.et al.Aerobic versus Anaerobic Nanofiltration: Fouling of Membranes.Proc. 1999 AWWA Membrane Conf. Long Beach Calif.

van derKooij D.;Vrouwenvelder H.S.; &Veenendaal H.R.Tools for Assessing Water Quality Characteristics Related With Biofouling of Membranes for Nanofiltration or Reverse Osmosis in Water Treatment.Proc. 1999 AWWA Membrane Conf. Long Beach Calif.

Escobar I.&Randall A.Sample Storage Impact on the Assimilable Organic Carbon Bioassay. (Unpubl.).

Thông tin
Thông tin xuất bản

Journal - American Water Works Association

Tập 91 Số 6

76-89

Thông tin tác giả