Treatment of pulp mill sludges by supercritical water oxidation

Technical Report · Sun Jul 01 00:00:00 EDT 1990

DOI:https://doi.org/10.2172/6282413· OSTI ID:6282413

Modell, M

Supercritical water oxidation (SCWO) is new process that can oxidize organics very effectively at moderate temperatures (400 to 650{degree}C) and high pressure (3700 psi). It is an environmentally acceptable alternative for sludge treatment. In bench scale tests, total organic carbon (TOC) and total organic halide (TOX) reductions of 99 to 99.9% were obtained; dioxin reductions were 95 to 99.9%. A conceptual design for commercial systems has been completed and preliminary economics have been estimated. Comparisons confirm that SCWO is less costly than dewatering plus incineration for treating pulp mill sludges. SCWO can also compete effectively with dewatering plus landfilling where tipping fees exceed $$35/yd{sup 3}. In some regions of the US, tipping fees are now $$75/yd{sup 3} and rising steadily. In the 1995 to 2000 time frame, SCWO has a good chance of becoming the method of choice. MODEC's objective is to bring the technology to commercial availability by 1993. 10 refs., 6 figs., 19 tabs.

• Research Organization: Modell Development Corp., Framingham, MA (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: FG05-90CE40914
• OSTI ID: 6282413
• Report Number(s): DOE/CE/40914-T1; ON: DE91002626
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
SLUDGES
WASTE MANAGEMENT
BENCH-SCALE EXPERIMENTS
DIOXIN
ECONOMICS
HALOGEN COMPOUNDS
OXIDATION
PAPER INDUSTRY
PROGRESS REPORT
SUPERCRITICAL STATE
WATER
WATER REMOVAL
CHEMICAL REACTIONS
DOCUMENT TYPES
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INDUSTRY
MANAGEMENT
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
REMOVAL
WOOD PRODUCTS INDUSTRY
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management