DENITRIFYING BACTERIA POPULATIONS AND NITROGEN REMOVAL IN SOIL COLUMNS INTERMITTENTLY FLOODED WITH SECONDARY SEWAGE EFFLUENT

被引:17
作者
GILBERT, RG
LANCE, JC
MILLER, JB
机构
关键词
D O I
10.2134/jeq1979.00472425000800010022x
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The effects of infiltration rates and carbon treatments on denitrifying bacteria populations and N-removal in soil columns intermittently flooded with secondary sewage effluent (SSE) were determined. At low infiltration rates of 10 to 15 cm/day, N-removal by denitrification was >80% and enrichment of the SSE with organic carbon did not further enhance N loss, even though the denitrifying bacteria populations were increased. However, at higher infiltration rates (15 to 40 cm/day), the physiologically active denitrifying bacteria populations were effective in net N-removal, and carbon enrichment of the SSE was essential for maintaining >80% N-removal. Continuous carbon treatments were more effective than 2-day pulse treatments for increasing the numbers of denitrifying bacteria and N-removal. With continuous carbon treatments of 200 mg/liter, >80% N-removal was obtained at infiltration rates of 40 cm/day. These results indicated that the activity of denitrifying bacteria and the N-removal capacity of high-rate land treatment systems could be enhanced by the timely additions of organic carbon to the SSE applied to the soil infiltration basins.; The effects of infiltration rates and carbon treatments on denitrifying bacteria populations and N-removal in soil columns intermittenly flooded with secondary sewage effluent (SSE) were determined. At low infiltration rates of 10 to 15 cm/day, N-removal by denitrification was 80% and enrichment of the SSE with organic carbon did not further enhance N loss, even though the denitrifying bacteria populations were increased. However, at higher infiltration rates (15 to 40 cm/day), the physiologically active denitrifying bacteria populations were effective in net N-removal, and carbon enrichment of the SSE was essential for maintaining 80% N-removal. Continuous carbon treatments were more effective than 2-day pulse treatments for increasing the numbers of denitrifying bacteria and N-removal. With continuous carbon treatments of 200 mg/liter, 80% N-removal was obtained at infiltration rates of 40 cm/day. These results indicated that the activity of denitrifying bacteria and the N-removal capacity of high-rate land treatment systems could be enhanced by the timely additions of organic carbon to the SSE applied to the soil infiltration basins.
引用
收藏
页码:101 / 104
页数:4
相关论文
共 14 条
[1]  
BOUWER H, 1974, J WATER POLLUT CON F, V46, P844
[2]   INFLUENCE OF GLUCOSE AND NITRATE CONCENTRATIONS UPON DENITRIFICATION RATES IN SANDY SOILS [J].
BOWMAN, RA ;
FOCHT, DD .
SOIL BIOLOGY & BIOCHEMISTRY, 1974, 6 (05) :297-301
[3]   IMPROVED METHOD FOR ENUMERATION OF DENITRIFYING BACTERIA [J].
FOCHT, DD ;
JOSEPH, H .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1973, 37 (05) :698-699
[4]   BIOLOGICAL DENITRIFICATION AND ITS APPLICATION IN TREATMENT OF HIGH-NITRATE WASTE-WATER [J].
FRANCIS, CW ;
CALLAHAN, MW .
JOURNAL OF ENVIRONMENTAL QUALITY, 1975, 4 (02) :153-163
[5]  
GILBERT RG, 1974, 1973 P INT C LAND WA, P87
[6]  
LANCE J C, 1972, Journal of Environmental Quality, V1, P180
[7]  
LANCE J C, 1973, Journal of Environmental Quality, V2, P345, DOI 10.2134/jeq1973.00472425000200030008x
[8]  
LANCE JC, 1972, J WATER POLLUT CON F, V44, P1352
[9]  
LANCE JC, 1976, J WATER POLLUT CON F, V48, P346
[10]   MAXIMIZING DENITRIFICATION DURING SOIL FILTRATION OF SEWAGE WATER [J].
LANCE, JC ;
WHISLER, FD ;
RICE, RC .
JOURNAL OF ENVIRONMENTAL QUALITY, 1976, 5 (01) :102-107