Net biomass production under complete solids retention in high organic load activated sludge process

被引：29

作者：

Amanatidou, Elisavet ^{[1
]}

Samiotis, Georgios ^{[1
]}

Bellos, Dimitrios ^{[1
]}

Pekridis, George ^{[1
]}

Trikoilidou, Eleni ^{[1
]}

机构：

[1] Technol Educ Inst Western Macedonia, Dept Environm Engn & Pollut Control, Lab Environm Chem & Wastewater Treatment, Kozani, Greece

来源：

BIORESOURCE TECHNOLOGY | 2015年 / 182卷

关键词：

Activated sludge; Complete solids retention; Observed biomass yield; Unbiodegradable organic compounds degradation; Zero net biomass growth; WASTE-WATER TREATMENT; MEMBRANE BIOREACTOR; ENDOGENOUS RESIDUE; PERFORMANCE; REDUCTION; MINIMIZATION; GROWTH; PLANT;

D O I：

10.1016/j.biortech.2015.01.119

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The effect of complete solids retention on net biomass production, at a slaughterhouse's activated sludge wastewater treatment process, was studied for 425 days. The process reached equilibrium after 150 days. In equilibrium phase, and until the end of the study, relative constant MLVSS to MLSS ratio, low food to microorganisms ratio (F/M), low substrate utilization rate (SUR) and negligible observed sludge yield (Y-obs) were measured. Y-obs fluctuated between positive and negative values (+/- 0.03 gVSS gCOD(-1)), tending zero mean values, and leading to the conclusion that zero net sludge growth can be achieved. The high BODultimate/COD ratio and the zero sludge accumulation, leads to the conclusion that all fractions of organic matter, including cell debris, are biodegradable. The results were verified by comparing the measured Y-obs values and those predicted using a conventional activated sludge model (ASM) and a modified ASM that incorporates the slow hydrolysis concept of the unbiodegradable compounds. (c) 2015 Elsevier Ltd. All rights reserved.

引用

页码：193 / 199

页数：7

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