UASB TREATMENT OF WASTE-WATER CONTAINING CONCENTRATED BENZOATE

被引:52
作者
LI, YY
FANG, HHP
CHEN, T
CHUI, HK
机构
[1] UNIV HONG KONG,DEPT CIVIL & STRUCT ENGN,HONG KONG,HONG KONG
[2] HONG KONG GOVT,DEPT ENVIR PROTECT,HONG KONG,HONG KONG
来源
JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE | 1995年 / 121卷 / 10期
关键词
D O I
10.1061/(ASCE)0733-9372(1995)121:10(748)
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The upflow anaerobic sludge blanket (UASB) process removed 97-99% of soluble chemical oxygen demand (GOD) from wastewater containing concentrated benzoate at 37 degrees C, pH 7.5, a hydraulic retention time of 9.8 h, and loading rates up to 30.6 g-COD/(L . day) based on the reactor volume. About 95.2% of the total COD removed was converted to methane; 0.034 g of volatile suspended solids (VSS) was yielded for each gram of COD removed. The highly settleable granules were 1-3 mm in size with a layered microstructure and were composed in abundance of bacteria resembling the benzoate-degrading Syntrophus buswellii. Two interesting observations have led to the postulation that the degradation of benzoate into acetate was probably conducted completely inside the cell of Syntrophus buswellii-like bacteria: (1) No fatty acids except acetate were found in the effluent; and (2) the granules showed very limited butyrate-degrading capability and could not degrade propionate. This study demonstrated the feasibility of removing aromatic pollutants in wastewater by anaerobic processes.
引用
收藏
页码:748 / 751
页数:4
相关论文
共 16 条
[1]   HISTOLOGICAL ANALYSIS OF MICROSTRUCTURE OF UASB GRANULES [J].
CHUI, HK ;
FANG, HHP .
JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE, 1994, 120 (05) :1322-1326
[2]   COMPARISON OF METHANE PRODUCTION-RATE AND COENZYME F420 CONTENT OF METHANOGENIC CONSORTIA IN ANAEROBIC GRANULAR SLUDGE [J].
DOLFING, J ;
MULDER, JW .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1985, 49 (05) :1142-1145
[3]   NEW METHOD FOR ISOLATION AND IDENTIFICATION OF METHANOGENIC BACTERIA [J].
EDWARDS, T ;
MCBRIDE, BC .
APPLIED MICROBIOLOGY, 1975, 29 (04) :540-545
[4]   UASB TREATMENT OF WASTE-WATER WITH CONCENTRATED MIXED VFA [J].
FANG, HHP ;
LI, YY ;
CHUI, HK .
JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE, 1995, 121 (02) :153-160
[5]   MAXIMUM COD LOADING CAPACITY IN UASB REACTORS AT 37-DEGREES-C [J].
FANG, HHP ;
CHUI, HK .
JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE, 1993, 119 (01) :103-119
[6]   MICROBIAL STRUCTURE AND ACTIVITY OF UASB GRANULES TREATING DIFFERENT WASTEWATERS [J].
FANG, HHP ;
CHUI, HK ;
LI, YY .
WATER SCIENCE AND TECHNOLOGY, 1994, 30 (12) :87-96
[7]   ANAEROBIC DECOMPOSITION OF BENZOIC-ACID DURING METHANE FERMENTATION .3. FATE OF CARBON FOUR AND IDENTIFICATION OF PROPANOIC ACID [J].
FINA, LR ;
BRIDGES, RL ;
COBLENTZ, TH ;
ROBERTS, FF .
ARCHIVES OF MICROBIOLOGY, 1978, 118 (02) :169-172
[8]   ANAEROBIC DECOMPOSITION OF BENZOIC-ACID DURING METHANE FERMENTATION .4. DE-AROMATIZATION OF RING AND VOLATILE FATTY-ACIDS FORMED ON RING RUPTURE [J].
KEITH, CL ;
BRIDGES, RL ;
FINA, LR ;
IVERSON, KL ;
CLORAN, JA .
ARCHIVES OF MICROBIOLOGY, 1978, 118 (02) :173-176
[9]  
KNOLL G, 1989, APPL MICROBIOL BIOT, V30, P318, DOI 10.1007/BF00256225
[10]  
LAWRENCE AW, 1969, J WPCF, V42, pR1