Study on CO 2 gasification properties of coal gasification wastewater slurry

2021 ◽  
Author(s):  
Jianzhong Liu ◽  
Dedi Li ◽  
Jianbin Wang ◽  
Zhi Chen ◽  
Jun Cheng ◽  
...  
Keyword(s):  
Coal Gasification ◽  
Coal Gasification Wastewater

Removal of nitrogen from coal gasification wastewater by nitrosofication and denitrosofication

1998 ◽  
Vol 38 (1) ◽  
pp. 39-46 ◽  
Author(s):  
Junxin Liu ◽  
Weiguang Li ◽  
Xiuheng Wang ◽  
Hongyuan Liu ◽  
Baozhen Wang
Keyword(s):  
Nitrogen Removal ◽  
Coal Gasification ◽  
Oxygen Demand ◽  
Test Results ◽  
New Process ◽  
Scale Test ◽  
Coal Gasification Wastewater ◽  
Total Nitrogen Removal ◽  
Biological Nitrogen ◽  
Bench Scale Test

In this paper, a study of a new process with nitrosofication and denitrosofication for nitrogen removal from coal gasification wastewater is reported. In the process, fibrous carriers were packed in an anoxic tank and an aerobic tank for the attached growth of the denitrifying bacteria and Nitrobacter respectively, and the suspended growth activated sludge was used in an aerobic tank for the growth of Nitrosomonas. A bench scale test has been carried out on the process, and the test results showed that using the process, 25% of the oxygen demand and 40% of the carbon source demand can be saved, and the efficiency of total nitrogen removal can increase over 10% as compared with a traditional process for biological nitrogen removal.

Roles of coal gasification wastewater in coal electrolysis for hydrogen production

Fuel ◽  
2021 ◽  
Vol 305 ◽  
pp. 121600
Author(s):  
Cong Chen ◽  
Jianzhong Liu ◽  
Hongli Wu ◽  
Jianbin Wang ◽  
Jun Cheng
Keyword(s):  
Hydrogen Production ◽  
Coal Gasification ◽  
Coal Gasification Wastewater

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.

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