Now showing items 1-6 of 6
Conditioning and Dewatering Behavior of ATAD Sludges
(Virginia Tech, 2004-03-04)
Autothermal thermophilic aerobic digestion (ATAD) of sludge has been used to produce class A biosolids. With stringent EPA guidelines, more and more municipalities are looking to use this process for digestion of sludge. ...
Increased Anaerobic Digestion Efficiency via the Use of Thermal Hydrolysis
(Virginia Tech, 2010-06-30)
Waste sludge is frequently treated by anaerobic digestion to kill pathogens, generate methane gas and reduce odors so the sludge can be safely land applied. In an attempt to reduce sludge volumes and improve sludge dewatering ...
Cations and activated sludge floc structure
(Virginia Tech, 2002-07-23)
This research was designed to investigate the effect of cations on activated sludge characteristics and also to determine their influence on digestion performance. For this purpose, cations in solution and in floc were ...
Anaerobic / Aerobic Digestion for Enhanced Solids and Nitrogen Removal
(Virginia Tech, 2008-12-04)
Anaerobic digestion of wastewater sludge has widely been in application for stabilization of sludge. With the increase in hauling cost and many environmental and health concerns regarding land application of biosolids, ...
Biopolymer and Cation Release in Aerobic and Anaerobic Digestion and the Consequent Impact on Sludge Dewatering and Conditioning Properties
(Virginia Tech, 1998-08-27)
Sludge dewatering and chemical conditioning requirements were examined from the perspective of biopolymer and cation release from activated sludge flocs. Both aerobic and anaerobic digestion processes were considered ...
ANAEROBIC AND COMBINED ANAEROBIC/AEROBIC DIGESTION OF THERMALLY HYDROLYZED SLUDGE
(Virginia Tech, 2009-11-12)
Sludge digestion has gained importance in recent year because of increasing interest in energy recovery and public concern over the safety of land applied biosolids. Many new alternatives are being researched for reducing ...