ANAEROBIC-AEROBIC TREATMENT OF HIGH-STRENGTH AMMONIUM WASTE-WATER - NITROGEN REMOVAL VIA NITRITE

被引:322
作者
ABELING, U
SEYFRIED, CF
机构
关键词
NITRIFICATION; DENITRIFICATION; NITRITATION; NITRATATION; ANAEROBIC-AEROBIC TREATMENT; INDUSTRIAL WASTE-WATER; NITROGEN REMOVAL;
D O I
10.2166/wst.1992.0542
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The two-stage anaerobic-aerobic treatment is applied by preference for the purification of high-concentrated industrial wastewaters. With regard to the elimination of nitrogen compounds by denitrification the far-reaching reduction of organic carbon during the anaerobic pre-treatment is problematic. A new process of nitrification/denitrification via nitrite was found to be available in half-technical experiences with high operation security. The carbon consumption amounts only to 60 % in comparison with denitrification via nitrate. The essential parameter for regulating the process is the concentration of free ammonia in the reactor. Concentrations of 1 to 5 mg NH3/l inhibit the nitratation but not the nitritation. The content of ammonia was controlled by means of continuous NH4- and pH-measuring. The inhibition limit for denitrification was found to be at 0.13 mg HNO2/l.
引用
收藏
页码:1007 / 1015
页数:9
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