ANAEROBIC REMOVAL OF COD IN METAL-CUTTING-FLUID WASTE-WATER

被引:27
作者
KIM, BR [1 ]
ZEMLA, JF [1 ]
ANDERSON, SG [1 ]
STROUP, DP [1 ]
RAI, DN [1 ]
机构
[1] GM CORP,RES LABS,DEPT ENVIRONM SCI,WARREN,MI 48090
关键词
ADSORPTION; ANAEROBIC TREATMENT; AUTOMOTIVE WASTE; CHEMICAL OXYGEN DEMAND; FLUIDIZED BED; INDUSTRIAL WASTE; METAL CUTTING FLUIDS;
D O I
10.2175/WER.64.3.5
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The treatment of metal-cutting-fluid wastewater was investigated using an anaerobic, granular activated carbon, fluidized-bed process. During 900 days of operation, three influent COD concentrations were tested: 1029, 3343, and 5324 mg/L. For each influent COD concentration, a series of influent flow rates was used to test a range of unexpanded empty-bed contact times from 0.9 to 7.5 hours. The findings include the following: (1) the reactor removed biodegradable COD effectively and efficiently at relatively high loading rates (more than 70 kg/m3.d); (2) approximately 35% of the influent COD was nonbiodegradable-more than approximately 65% of the nonbiodegradable COD was aerobically biodegradable; (3) approximately 68% of the COD biodegraded was converted to methane, showing potential for energy recovery; (4) a relatively low biomass production (a yield coefficient of approximately 0.09 g biomass produced/g COD degraded) was observed; and (5) the overall removal rate of biodegradable COD followed first-order kinetics.
引用
收藏
页码:216 / 222
页数:7
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