Kinetic Analysis for Destruction of Municipal Sewage Sludge and Alcohol Distillery Wastewater by Supercritical Water Oxidation

1999 ◽  
Vol 38 (5) ◽  
pp. 1863-1865 ◽  
Author(s):  
Motonobu Goto ◽  
Takatsugu Nada ◽  
Akio Kodama ◽  
Tsutomu Hirose
Keyword(s):  
Sewage Sludge ◽  
Kinetic Analysis ◽  
Supercritical Water ◽  
Water Oxidation ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Supercritical Water Oxidation ◽  
Distillery Wastewater

Phosphate recovery from sewage sludge in combination with supercritical water oxidation

2003 ◽  
Vol 48 (1) ◽  
pp. 185-190 ◽  
Author(s):  
K. Stendahl ◽  
S. Jäfverström
Keyword(s):  
Sewage Sludge ◽  
Supercritical Water ◽  
Water Oxidation ◽  
Organic Contaminants ◽  
Sodium Phosphate ◽  
Pure Water ◽  
Phosphate Solution ◽  
Supercritical Water Oxidation ◽  
Digested Sludge ◽  
Sodium Phosphate Solution

Supercritical Water Oxidation (SCWO) is an innovative and effective destruction method for organics in sewage sludge. The SCWO process leaves a slurry of inorganic ash in a pure water phase free from organic contaminants, which opens possibilities for a simple process to recover components like phosphates from the sewage sludge. In a continuous pilot plant for the SCWO process digested sludge has been treated. The ash has been extracted in lab scale with both caustic and acids in order to recover phosphates. By leaching the ash with caustic, 90% of the phosphorus could be separated as a sodium phosphate solution. By treating the sodium phosphate solution with lime, calcium phosphate was precipitated and caustic recovered and circulated back to the leaching process.

Design of the first pilot scale plant of China for supercritical water oxidation of sewage sludge

2012 ◽  
Vol 90 (2) ◽  
pp. 288-297 ◽  
Author(s):  
Donghai Xu ◽  
Shuzhong Wang ◽  
Xingying Tang ◽  
Yanmeng Gong ◽  
Yang Guo ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Supercritical Water ◽  
Water Oxidation ◽  
Pilot Scale ◽  
Supercritical Water Oxidation
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