Coal Conversion Wastewater Treatment by Catalytic Oxidation in Supercritical Water

A combined process of ammonia distillation - evaporation concentration - supercritical water gasification (SCWG) supercritical water oxidation (SCWO) was proposed for coking wastewater treatment. The NH3 in wastewater was first recovered in ammonia distillation section. The deammoniated wastewater was concentrated in the evaporation concentration section, in which the quantity of the wastewater was decreased accordingly. Then the concentrated wastewater entered into the SCWG section to produce the syngas such as H2, CO, CH4, and liquid effluent entered into SCWO section, where the pollutants were completely degraded. The operation parameters of the combined process were simulated by Aspen Plus software and the investment and the operation cost were also analyzed. For a wastewater of 5000kg/h, the investment of the combined process is 6000000 ¥. The profit from byproduct of ammonia, syngas and steam is 70¥/t. For the whole process, it can gain a profit of 5.1 ¥/t (wastewater).

Kinetics of Coal Conversion in Supercritical Water

Energy & Fuels ◽

10.1021/ef070127a ◽

2007 ◽

Vol 21 (5) ◽

pp. 2840-2845 ◽

Cited By ~ 45

Author(s):

Anatoli A. Vostrikov ◽

Sergey A. Psarov ◽

Dmitri Yu. Dubov ◽

Oxana N. Fedyaeva ◽

Mikhail Ya. Sokol

Keyword(s):

Supercritical Water ◽

Coal Conversion ◽

Kinetics Of

Influencing factors on the neutral red dye wastewater treatment by chlorine dioxide and activated carbon catalytic oxidation process

2010 International Conference on Mechanic Automation and Control Engineering ◽

10.1109/mace.2010.5535259 ◽

2010 ◽

Author(s):

Wang Hongyu ◽

Mei Jian ◽

Yang Kai ◽

Li Lin ◽

Lv Bin ◽

...

Keyword(s):

Wastewater Treatment ◽

Activated Carbon ◽

Catalytic Oxidation ◽

Influencing Factors ◽

Chlorine Dioxide ◽

Oxidation Process ◽

Neutral Red ◽

Dye Wastewater ◽

Red Dye

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Applied Catalysis B Environmental ◽

10.1016/0926-3373(93)e0038-d ◽

1994 ◽

Vol 3 (2-3) ◽

pp. L101-L107 ◽

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Janez Levec

Keyword(s):

Catalytic Oxidation ◽

Supercritical Water ◽

Toxic Organics

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The Journal of Supercritical Fluids ◽

10.1016/0896-8446(90)90028-k ◽

1990 ◽

Vol 3 (4) ◽

pp. 233-239 ◽

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Lei Jin ◽

Y.T. Shah ◽

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Keyword(s):

Catalytic Oxidation ◽

Supercritical Water