Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/84508
Title: A sequencing batch anaerobic reactor for treating piggery wastewater
Authors: Ng, W.-J. 
Issue Date: 1989
Source: Ng, W.-J. (1989). A sequencing batch anaerobic reactor for treating piggery wastewater. Biological Wastes 28 (1) : 39-51. ScholarBank@NUS Repository.
Abstract: A study was performed using a 16 litre batch anaerobic reactor for treating piggery wastewater. Operation of the reactor resembled that of the aerobic SBR process (sequencing-batch reactor) and was cyclic. Each cycle comprised settle, discharge, feed and react modes. Hydraulic retention times (HRT) of 15, 10, 5, 3 and 1 day were investigated. Liquid-solid separation within the reactor occurred readily without the aid of flocculating agents, leading to the development of a sludge blanket which could be expanded. Sludge retention times exceeded the HRT by a wide margin. For TCOD and TBOD loading rates of 0.40-6.45 and 0.20-2.45 g litre-1 day-1, reductions ranged from 53-85% and 68-89% respectively. Transient-state gas quality was very stable and methane content ranged between 76 and 80%. Rising gas bubbles did resuspend some settled sludge during 'settle' leading to quantities of suspended material leaving the reactor. The reactor required very little operator attention since it was effectively controlled by a microprocessor controller.
Source Title: Biological Wastes
URI: http://scholarbank.nus.edu.sg/handle/10635/84508
ISSN: 02697483
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

12
checked on Feb 15, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.