Supercritical Water Oxidation of Pulp and Paper Mill Sludge as an Alternative to Incineration

Author(s):  
Carol A. Blaney ◽  
Lixiong Li ◽  
Earnest F. Gloyna ◽  
Shafi U. Hossain
2014 ◽  
Vol 955-959 ◽  
pp. 711-715 ◽  
Author(s):  
Li Li Qian ◽  
Shu Zhong Wang ◽  
Jie Zhang

Paper industry produces large amounts of sludge with about 65wt% moisture content. Due to its complex composition, the charge of traditional disposal method is high and easy to bring about secondary pollution. In this paper, the influences of temperature, oxidation coefficient and residence time on the performance of supercritical water oxidation (SCWO) of paper mill sludge were investigated. The results show that SCWO can almost completely eliminate organics in sludge and obtain transparent liquid products meeting relative national standards at 550°C, 5min with an oxidation coefficient of 3.0. However, during this process, TN changes to NH3-N, so NH3-N in liquid products increases with operation parameters, indicating the recalcitrant nature of NH3-N, and which needs further treatment.


2000 ◽  
Vol 42 (7-8) ◽  
pp. 363-368 ◽  
Author(s):  
N. Crain ◽  
A. Shanableh ◽  
E. Gloyna

Supercritical water oxidation (SCWO) is a proven technology for the treatment of contaminated organic wastes. Bench and pilot-scale work completed at The University of Texas at Austin's SCWO Laboratory have proven the technology effective for treating a variety of sludge types, including sludge contaminated with hazardous compounds. The studies included pulp and paper mill sludges and sludges derived from the treatment of municipal and industrial wastewaters. The results presented in this paper confirmed that the removal of the organic component of sludge, including the trace toxic organic compounds, using SCWO exceeded 99.9%. For example, the results show that the destruction removal efficiencies (DRE's) of the PCBs reached 99.99% in the contaminated sludge. No dioxins or furans were detected in the gaseous effluent resulting from the treatment of the PCB-contaminated sludge. These results demonstrate the technical effectiveness of SCWO as a sludge remediation technology.


2021 ◽  
Vol 30 (3) ◽  
pp. 350-364
Author(s):  
O. N. Fedyaeva ◽  
A. A. Vostrikov ◽  
D. O. Artamonov ◽  
A. V. Shishkin ◽  
M. Ya. Sokol

2020 ◽  
pp. 1-14 ◽  
Author(s):  
Thiago Souza Da Rosa ◽  
Rosilani Trianoski ◽  
Franck Michaud ◽  
Christophe Belloncle ◽  
Setsuo Iwakiri

2016 ◽  
Vol 33 (11) ◽  
pp. 907-917 ◽  
Author(s):  
Gregory R. Hinds ◽  
Wendy Mussoline ◽  
Lensey Casimir ◽  
George Dick ◽  
Daniel H. Yeh ◽  
...  

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