Combined removal of pesticides and nitrates in drinking waters using biodenitrification and sand filter system

被引：38

作者：

Aslan, S ^{[1
]}

机构：

[1] Cumhuriyet Univ, Dept Environm Engn, TR-58140 Sivas, Turkey

来源：

PROCESS BIOCHEMISTRY | 2005年 / 40卷 / 01期

关键词：

trifluralin; fenitrothion; Endosulfan (alpha plus beta); biological denitrification; drinking waters; pesticides;

D O I：

10.1016/j.procbio.2004.01.030

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A submerged biological denitrification system was employed to remove selected pesticides and nitrate from drinking waters. Ninety-five percent nitrate removal and over 76,50, and 72% of mineralization of trifluralin, fenitrothion, and endosulfan (alpha+beta) were obtained, respectively after three days. Approximately 13 mg SS/l of microbial growth was obtained in the batch unit. After determining the optimum C/N ratio as 1.5 in a biodenitrification batch test, experiments were carried out in a continuous mode. Between 93 and 98% of nitrate removal efficiency was observed and nitrite concentrations were quite low for theta(h) values higher than 2 h. Although no significant improvement in nitrate and organic carbon eliminations was observed at theta(h) = 12 h, the highest trifluralin, fenitrothion, and endosulfan (alpha+beta) removal efficiencies (about 100%) were observed. A sand filter system provided good turbidity and suspended solids removal efficiencies. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：417 / 424

页数：8

共 15 条

[1]

*APHA AWWA, 1995, WPCF STAND METH EX W

[2]

ASLAN S, 2002, THESIS DOKUZ EYLUL U

[3]

ASLAN S, 2002, P IAH ALHSUD C MARD

[4] Nitrate removal from water using cyclically operated fixed-film bio-denitrification reactors [J].

Dahab, MF ;

Kalagiri, J .

WATER SCIENCE AND TECHNOLOGY, 1996, 34 (1-2) :331-338

[5] NITRATE REMOVAL FROM WATER-SUPPLIES USING BIODENITRIFICATION AND GAC-SAND FILTER SYSTEMS [J].

DAHAB, MF ;

SIRIGINA, S .

WATER SCIENCE AND TECHNOLOGY, 1994, 30 (09) :133-139

[6] DRINKING-WATER DENITRIFICATION IN A MEMBRANE BIOREACTOR [J].

DELANGHE, B ;

NAKAMURA, F ;

MYOGA, H ;

MAGARA, Y ;

GUIBAL, E .

WATER SCIENCE AND TECHNOLOGY, 1994, 30 (06) :157-160

[7] Nitrate and pesticide removal by a combined bioelectrochemical/adsorption process [J].

Feleke, Z ;

Sakakibara, Y .

WATER SCIENCE AND TECHNOLOGY, 2001, 43 (11) :25-33

[8] DRINKING-WATER FROM AGRICULTURALLY CONTAMINATED GROUNDWATER [J].

GOODRICH, JA ;

LYKINS, BW ;

CLARK, RM .

JOURNAL OF ENVIRONMENTAL QUALITY, 1991, 20 (04) :707-717

[9]

Hallberg G. R., 1987, American Journal of Alternative Agriculture, V2, P3, DOI 10.1017/S0889189300001405

[10] Simultaneous removal of nitrate and atrazine from groundwater [J].

Katz, I ;

Dosoretz, C ;

Ruskol, Y ;

Green, M .

WATER SCIENCE AND TECHNOLOGY, 2000, 41 (4-5) :49-56

← 1 2 →