Catalytic ozone oxidation treatment of wastewater from a pesticide enterprise

2020 ◽  
Vol 208 ◽  
pp. 330-336
Author(s):  
Lei Chen ◽  
Yongjun Sun
2016 ◽  
Vol 42 (5) ◽  
pp. 178-184 ◽  
Author(s):  
Hiroyuki OGUMA ◽  
Tomoya KUMAGAI ◽  
Daisuke SAKAMOTO ◽  
Masahiro SEKINE ◽  
Norio HIRAYAMA ◽  
...  

Seikei-Kakou ◽  
2015 ◽  
Vol 27 (3) ◽  
pp. 102-108 ◽  
Author(s):  
Hiroyuki Oguma ◽  
Tomoya Kumagai ◽  
Masaru Sano ◽  
Daisuke Sakamoto ◽  
Hiroyuki Inoue ◽  
...  

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1068
Author(s):  
Seunghan Ryu ◽  
Sanghun Lee ◽  
Hannah Oh ◽  
Sanghwa Oh ◽  
Minsoo Park ◽  
...  

In this study, paper-mill wastewater was treated using the Submerged Membrane Bioreactor (SMBR) process. In particular, the ozone oxidation treatment process is applied after SMBR to remove the fluorescent whitening agent, which is a trace pollutant and non-biodegradable. Fluorescent whitening agent concentration was indirectly measured by UV scanning and COD concentration. The concentration of COD before SMBR and ozone oxidation was 449.3 mg/L, and the concentration of treated water was 100.3 mg/ℓ. The COD removal efficiency of paper-mill wastewater through SMBR and the ozone oxidation process was about 77.68%. The optimized amount of ozone was required for the removal of the fluorescent whitening agent after SMBR was 95 mg·O3/ℓ calculated by UV scan results. Additionally, the optimized amount of required ozone to remove COD was calculated to 0.126 mg·COD/mg·O3.


2012 ◽  
Vol 7 (1) ◽  
Author(s):  
Jong Hwa Park ◽  
Ji Man Kim ◽  
Mingshi Jin ◽  
Jong-Ki Jeon ◽  
Seung-Soo Kim ◽  
...  

2014 ◽  
Vol 522-524 ◽  
pp. 629-633
Author(s):  
Jun Yin ◽  
Zheng Wang ◽  
Li Jian He ◽  
Wan Yao Wang ◽  
Liang Liang

Experimental study of the ozone through catalytic oxidation treatment sludge and rubbish leachate, The impact of different catalysts dosage on absorption rate of O3CODNH4+-NTPpH and other indicators.The results showed that, Dosing Cu-Ni catalyst can increase the absorption rate of ozone, And rubbish leachate ozone absorption rate is higher than the absorption rate of the sludge supernatant; Ozone oxidation catalyst can improve sludge supernatant and leachate the COD removal rate, the optimum mass ratio of 3; Ozone oxidation of sludge supernatant and rubbish leachate is difficult to NH4+-N and organic nitrogen due to preferential oxidation of ozone to convert it to NH4+-N, NH4+-N within the system led to rise, not fall, overall dosing ozone catalyst for the oxidation of NH4+-N had little effect; Dosing catalyst can effectively improve the sludge supernatant and rubbish leachate TP removal, rubbish leachate optimal mass ratio of 3, the optimum sludge supernatant mass ratio of 7; Rubbish leachate pH, with a small amount of catalyst dosage was decreased, while the pH of the sludge supernatant, then with a small amount of catalyst was increased upward trend.


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