Abstract
Multiple continuous-flow reactors were operated at 55°C under potassium-limited conditions to investigate energy spilling metabolism during thermophilic aerobic biological wastewater treatment. Energy spilling metabolism has been previously shown to reduce the observed cell growth yield at short mean cell residence times, which could potentially be used to promote autothermal operation during the biological treatment of high-strength wastewater. Under the potassium-limited conditions imposed during these experiments, cell yields decreased at lower residence times, commensurate with the characteristic pattern of energy spilling conditions. The minimum growth yield measured was 0.19 mg TSS per mg COD removed, which was believed to be too high to promote autothermal reactor operation for thermophilic treatment. These results suggest that operation of conventional biological treatment processes under energy spilling conditions could be used to reduce the net production of residual biomass. Copyright (C) 2000 Elsevier Science Ltd.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2723-2726 |
| Number of pages | 4 |
| Journal | Water Research |
| Volume | 34 |
| Issue number | 10 |
| DOIs | |
| State | Published - Jul 1 2000 |
Bibliographical note
Funding Information:This research was supported by Mass Transfer Systems, Inc., the US Department of Education in the form of a Graduate Assistantship in Areas of National Need (GAANN) fellowship to T.M.L., and National Science Foundation Grant BES 9812159.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
Keywords
- Autothermal
- Biological
- Energy spilling
- Potassium-limited
- Thermophilic
