Practical Application of New Water Purifying Agent in Advanced Treatment of Coking Wastewater

2021 ◽  
Vol 10 (02) ◽  
pp. 175-185
Author(s):  
国瑞 王
Keyword(s):  
Advanced Treatment ◽  
Coking Wastewater ◽  
Practical Application

Advanced Treatment of Coking Wastewater by Oxidation Process Using Pyrite and Hydrogen Peroxide

2013 ◽  
Vol 726-731 ◽  
pp. 2521-2525
Author(s):  
Zhi Yong Zhang ◽  
De Li Wu
Keyword(s):  
Hydrogen Peroxide ◽  
Oxidation Process ◽  
Low Cost ◽  
Oxygen Demand ◽  
Utilization Efficiency ◽  
Advanced Treatment ◽  
Coking Wastewater ◽  
Second Stage ◽  
Potential Alternative ◽  
High Utilization

Coking wastewater is a kind of recalcitrant wastewater including complicate compositions. Advanced treatment of coking wastewater by Fenton-Like reaction using pyrite as catalyst was investigated in this paper. The results show that the chemical oxygen demand (COD) of coking wastewater decreased significantly by method of coagulation combined with two-stage oxidation reaction. COD of wastewater can decrease from 250mg/l to 45mg/l after treatment, when 2g/L pyrite was used in each stage oxidation and the dosage of hydrogen peroxide (H2O2) is 0.2ml/l for first stage treatment, 0.1ml/l for second stage treatment respectively. The pyrite is effective to promote Fenton-Like reaction with low cost due to high utilization efficiency of H2O2, moreover, catalyst could be easily recovered and reused. The Fenton-Like reaction might be used as a potential alternative to advanced treatment of recalcitrant wastewater.

Preparation of a New Adsorption Material and its Application in Wastewater Treatment

2011 ◽  
Vol 356-360 ◽  
pp. 498-501
Author(s):  
Wen Jie Jin ◽  
Fan Chao Zeng ◽  
Han Xue ◽  
Ying Wang
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Carbon Materials ◽  
Advanced Treatment ◽  
Coking Wastewater ◽  
Biochemical Process ◽  
Effluent Water ◽  
Dyeing Wastewater ◽  
Printing And Dyeing Wastewater ◽  
New Material

A kind of new adsorption material for wastewater treatment was made of fly ash as the main composition, with addition of sodium silicate, cement and pore forming material as the accessory materials, etc. Three kinds of practical wastewater were treated by using the new material, they were printing and dyeing wastewater, papermaking wastewater and coking wastewater, respectively. The results showed that removal COD efficiencies of the three kinds of wastewater were 57.89%, 71.43%, 80%, respectively, removal color efficiencies were 90%, 92%, 92%, respectively. The new developed material was mainly used for advanced treatment of the effluent water after biochemical process. It will be a substitute for activated carbon materials and have preferable application prospect.

Advanced Treatment of Coking Wastewater by Coagulation with PAC

2010 ◽  
Vol 159 ◽  
pp. 499-504 ◽  
Author(s):  
Yi Zheng ◽  
Zhuo Zhang ◽  
Hong Tao Hu ◽  
Xia Liang Wei
Keyword(s):  
Reaction Time ◽  
Optimal Condition ◽  
High Speed ◽  
Dynamic Condition ◽  
Advanced Treatment ◽  
Coking Wastewater ◽  
Efficient Removal ◽  
Low Speed ◽  
Integrated Technique

An integrated technique was investigated, aiming to provide an effective method for the treatment of biologically treated coking wastewater and to reduce pollutants to concentration values below the limits imposed by the legislation. Coking wastewater containing 270 mg/L COD and 202 times color was treated by coagulation using PAC as well as PAC +PAM, respectively. The application of coagulation using PAC+PAM resulted to a much more efficient removal of color, COD and SS in comparison with single coagulation without PAC. The optimal condition for coagulation with PAC was pH 8, dosage 75 mg/L and dynamic condition 1-minute high speed stirring followed by 15-minute low speed stirring. The optimal condition for coagulation with PAC and PAM was: PAM dosage of 6 mg/L, PAC dosage of 70 mg/L, pH of 8 and reaction time of 20 minutes. Both processes of coagulation were found to be efficient for removal of COD from coking wastewater, but ineffective in reducing color.

Advanced treatment of biologically treated coking wastewater by membrane distillation coupled with pre-coagulation

Desalination ◽  
2016 ◽  
Vol 380 ◽  
pp. 43-51 ◽  
Author(s):  
Jianfeng Li ◽  
Jing Wu ◽  
Huifang Sun ◽  
Fangqin Cheng ◽  
Yu Liu
Keyword(s):  
Membrane Distillation ◽  
Advanced Treatment ◽  
Coking Wastewater

Advanced Treatment of Coking Wastewater by Sequencing Batch MBR-RO

2013 ◽  
Vol 838-841 ◽  
pp. 2791-2796
Author(s):  
Jiao Wang
Keyword(s):  
Advanced Treatment ◽  
Coking Wastewater ◽  
Removal Efficiencies

A sequencing batch MBR-RO system has been developed to treat coking wastewater, focusing attention on the COD and TN removal efficiencies. Operational results over 60 days showed that the sequencing batch MBR-RO system had a great impact on removals of COD and TN. the removal efficiencies of COD and TN were 93% and 96% respectively. Final concentrations in the effluent of 0.24 mg phenols/L, 0.02 mg cyanides /L, 28.7 mg COD/L and 4.53 mg TN/L were obtained. In addition, the flux of MBR and RO lost 65.3% and 73.2% respectively.

Study of Modified Coke on the Advanced Treatment of Coking Wastewater

2013 ◽  
Vol 726-731 ◽  
pp. 1739-1743
Author(s):  
Shang Chao Liu ◽  
Gai Feng Xue ◽  
Lei Zhang ◽  
Ai Ming Duan ◽  
Shu Jing Zhu
Keyword(s):  
Temperature Effect ◽  
Cod Removal ◽  
Advanced Treatment ◽  
Coking Wastewater ◽  
Adsorption Time ◽  
Adsorbent Dosage ◽  
Coke Wastewater ◽  
The Impact

Coke was modified as adsorbent for advanced treatment of coking wastewater and different factors on the impact of wastewater COD removal have been studied. The results showed that pH and temperature effect little on the COD removal and COD of coke wastewater could be reduced from 93mg/L to 48mg/L in the condition of 60 min adsorption time , 300r/min speed revolve and 13g adsorbent dosage. per 200ml water.

Advanced treatment of biologically pretreated coking wastewater by electrochemical oxidation using Ti/RuO2-IrO2electrodes

2013 ◽  
Vol 88 (8) ◽  
pp. 1568-1575 ◽  
Author(s):  
Xuwen He ◽  
Zhen Chai ◽  
Fuping Li ◽  
Chunhui Zhang ◽  
Dong Li ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Advanced Treatment ◽  
Coking Wastewater
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