Anaerobic migrating blanket reactor treatment of low-strength wastewater at low temperatures

被引:46
作者
Angenent, LT
Banik, GC
Sung, SW
机构
[1] Univ Colorado, Dept Civil Environm & Architectural Engn, Boulder, CO 80309 USA
[2] Iowa State Univ, Dept Civil & Construct Engn, Iowa City, IA USA
[3] So Polytech State Univ, Construct Dept, Atlanta, GA USA
关键词
anaerobic treatment; low-strength wastewater; low-temperature conditions; compartmentalized reactor; granules; staged treatment; anaerobic migrating blanket reactor; methanogenesis;
D O I
10.2175/106143001X139632
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The feasibility of the compartmentalized anaerobic migrating blanket reactor (AMBR) was studied for the treatment of low-strength soluble wastewater under low-temperature conditions. During an operating period of 186 days, a 20-L AMBR was fed nonfat dry milk substrate as a synthetic wastewater at low temperatures (15 and 20 degreesC). The concentration of the influent was constant at chemical oxygen demand (COD) and 5-day biological oxygen demand (BODS) concentrations of 600 and 285 mg/L, respectively. The soluble COD (SCOD) removal efficiency was 73% at the end of the operating period (15 degreesC) at a 4-hour hydraulic retention time (HRT), while the total COD (TCOD) removal efficiency was 59%. At a 4-hour HRT, staged conditions promoted complete removal of propionic acid in the final compartments of the reactor. The specific methanogenic activity of granules increased slowly until the end of the operating time, improving the removal rate. Biomass was retained effectively, as evidenced by the solids retention time (SRT) that was always greater than 50 days even during step decreases of the reactor HRT from 12 hours to 4 hours. A long SRT also promoted system stability during changes in flow, which was observed by SCOD removal efficiencies staying greater than 70%. During a hydraulic stress test, the HRT was reduced from 4 hours to 1 hour for one day (24 HRTs) in which volatile suspended solids (VSS) in the effluent increased from an average background level of 8.7 g/d to 35 g/d and the SRT decreased from 50.5 days to 12.6 days. However, mixed liquor volatile suspended solids concentration decreased only by 1 g/L, and hence a similar COD removal efficiency and biogas production was found one day after the hydraulic stress (as compared to one day before the hydraulic stress).
引用
收藏
页码:567 / 574
页数:8
相关论文
共 32 条
[1]  
*AM PUBL HLTH ASS, 1995, STAND METH EX WAT WA
[2]   Development of anaerobic migrating blanket reactor (AMBR), a novel anaerobic treatment system [J].
Angenent, LT ;
Sung, SW .
WATER RESEARCH, 2001, 35 (07) :1739-1747
[3]   Structure and methanogenic activity of granules from an ASBR treating dilute wastewater at low temperatures [J].
Banik, GC ;
Ellis, TG ;
Dague, RR .
WATER SCIENCE AND TECHNOLOGY, 1997, 36 (6-7) :149-156
[4]   Low temperature effects on anaerobic microbial kinetic parameters [J].
Banik, GC ;
Viraraghavan, T ;
Dague, RR .
ENVIRONMENTAL TECHNOLOGY, 1998, 19 (05) :503-512
[5]   TREATMENT OF RAW DOMESTIC SEWAGE IN AN UASB REACTOR [J].
BARBOSA, RA ;
SANTANNA, GL .
WATER RESEARCH, 1989, 23 (12) :1483-1490
[6]   Anaerobic sequencing batch reactor treatment of dilute wastewater at psychrophilic temperatures [J].
Dague, RR ;
Banik, GC ;
Ellis, TG .
WATER ENVIRONMENT RESEARCH, 1998, 70 (02) :155-160
[7]  
Grady Jr CPL., 2011, BIOL WASTEWATER TREA
[8]   HYDRODYNAMIC CHARACTERISTICS OF THE ANAEROBIC BAFFLED REACTOR [J].
GROBICKI, A ;
STUCKEY, DC .
WATER RESEARCH, 1992, 26 (03) :371-378
[9]   ROLE OF SUBSTRATE CONCENTRATION IN PARTICLE-SIZE DISTRIBUTION OF METHANOGENIC ANTIGRANULOCYTES SLUDGE IN UASB REACTORS [J].
GROTENHUIS, JTC ;
KISSEL, JC ;
PLUGGE, CM ;
STAMS, AJM ;
ZEHNDER, AJB .
WATER RESEARCH, 1991, 25 (01) :21-27
[10]  
KATO M, 1994, THESIS WAGENINGEN AG