Mesoporous lignite-coke as an effective adsorbent for coal gasification wastewater treatment

2017 ◽  
Vol 3 (1) ◽  
pp. 169-174 ◽  
Author(s):  
Hongguang An ◽  
Zhenqiang Liu ◽  
Xiaoxin Cao ◽  
Jilin Teng ◽  
Wenhua Miao ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Wastewater Treatment ◽  
High Molecular Weight ◽  
Coal Gasification ◽  
Refractory Compounds ◽  
Coal Gasification Wastewater

Mesoporous lignite-coke as an effective adsorbent for high molecular weight refractory compounds in coal gasification wastewater treatment.

Degradation of Carcinogenic Hydroquinone in Coal Gasification Wastewater by Using Anaerobic Shaker Test

2014 ◽  
Vol 1049-1050 ◽  
pp. 39-43 ◽  
Author(s):  
Qin Hong Ji ◽  
Salma Tabassum ◽  
Chun Feng Chu ◽  
Chun Jie Li ◽  
Zhen Jia Zhang
Keyword(s):  
Industrial Wastewater ◽  
Coal Gasification ◽  
Anaerobic Sludge ◽  
Phenol Removal ◽  
Operational Parameters ◽  
Pollutant Degradation ◽  
Refractory Compounds ◽  
Coal Gasification Wastewater ◽  
Hydrolysis Acidification ◽  
Wastewater Samples

Coal gasification wastewater, as a typical industrial wastewater has poor biodegradability and high toxicity. In this paper, simple anaerobic shaker test was conducted to investigate the degradation of hydroquinone in coal gasification wastewater. Anaerobic sludge shaker test were run for 27, 50 and 73 days, the phenol concentration were adjusted to 300 mg/L and 500 mg/L with pH 7.5, respectively. The experimental results also showed that this system could effectively deal with COD and phenol removal and remain in a stable level when the operational parameters altered while the hydrolysis acidification at 45h is appropriate. Organics degradation and transformation of anaerobic coal gasification wastewater samples at 12h, 24h, 36h, 48h, and 60h were analyzed by GC/MS and it was found that hydrolysis acidification played an important role in degradation of methyl phenol, hydroquinone and refractory compounds. Therefore, the results illustrated that the simple anaerobic shaker process is an easy way for pollutant degradation and treat coal gasification wastewater effectively.

The Removal of Chlorinated Organics from Conventional Pulp and Paper Wastewater Treatment Systems

1992 ◽  
Vol 26 (1-2) ◽  
pp. 417-425 ◽  
Author(s):  
C. W. Bryant ◽  
J. J. Avenell ◽  
W. A. Barkley ◽  
R. N. Thut
Keyword(s):  
Molecular Weight ◽  
Wastewater Treatment ◽  
Activated Sludge ◽  
High Molecular Weight ◽  
High Performance ◽  
Treatment Plant ◽  
Low Molecular Weight ◽  
Pulp Mills ◽  
Minimal Impact ◽  
Wastewater Treatment Systems

A two-year survey of adsorbable organic halide (AOX) removals was conducted for eight full-scale wastewater treatment systems operated at pulp mills in North America. The resulting AOX database, one of the most comprehensive currently available, supports several significant findings. AOX removals averaged 46% for the two activated sludge systems and 34% for the five aerated stabilization basins (ASBs). Both the activated sludge facilities and ASBs averaged removing over half of the influent low molecular weight AOX. The average removal of high molecular weight AOX varied among mill sites from 1% to 47% and was not correlated with the type of treatment process used. The best-performing treatment facility, located at a sulfite mill receiving nearly 100% hardwood furnish and using an activated sludge treatment system, was able to consistently remove 53% of the AOX, 62% of the low molecular weight AOX, and 47% of the high molecular weight AOX in bleaching wastewaters. Factors responsible for this high performance are not currently understood. Effluent AOX was strongly correlated (R2 = 0.90) to the influent loading for ASBs. In-mill improvements such as the use of oxygen and peroxide as well as chlorine dioxide substitution reduce influent AOX loading, apparently with minimal impact on treatment plant removal efficiency.

A review on the coal gasification wastewater treatment technologies: past, present and future outlook

2016 ◽  
Vol 126 ◽  
pp. 38-55 ◽  
Author(s):  
Qinhong Ji ◽  
Salma Tabassum ◽  
Sufia Hena ◽  
Cláudia G. Silva ◽  
Guangxin Yu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Coal Gasification ◽  
Future Outlook ◽  
Treatment Technologies ◽  
Coal Gasification Wastewater
Sign in / Sign up

Export Citation Format

Share Document