Citation: Yu Zhongchen, Zhong Liubo, Wang Song, Wu Jiang. Study on Degradation of Polyacrylamide Solution by Fe(II)(EDTA) Chelate/UV Catalytic Ozonation Process[J]. Chemistry, ;2016, 79(4): 372-376. shu

Study on Degradation of Polyacrylamide Solution by Fe(II)(EDTA) Chelate/UV Catalytic Ozonation Process

1.
1. School of Civil Architecture Engineering, School of Earth Science, Northeast Petroleum University, Daqing 163318;
2.
2. Department of Geochemistry, School of Earth Science, Northeast Petroleum University, Daqing 163318

Received Date: 24 August 2015
Available Online: 17 November 2015
Fund Project:

The polyacrylamide (PAM) solution was treated by using Fe(II)(EDTA) chelate/UV catalytic ozonation process. The effect of hydraulic retention time (HRT), single O₃ and the system of Fe(II)(EDTA) chelate/UV catalytic ozonation on viscosity and PAM removal rate of the solution were analyzed in detail. The change rule of B/C with the variation of HRT and the efficiency of the system on biodegradability of PAM solution were investigated. Moreover, the effect of surfactant and oxalic acid on the process to oxidize PAM solution was also discussed separately. The result showed that the method can well degrade the PAM solution. The viscosity of the PAM solution is decreased 57% in the first 15min, the PAM removal rate is up to 75% and the B/C ratio is improved from 0.121 to 0.423 by a large margin within 120min. The surfactant only has a small influence on the process to reduce the solution viscosity. In addition, because acidic condition caused by adding oxalic acid restrains the decomposition of O₃ in aqueous solution, it is not conducive to the catalytic ozone oxidation degradation process, and the viscosity reduction efficiency and PAM removal rate of the solution in oxalic acid/Fe(II)(EDTA)/O₃ system is lower than that in Fe(II)(EDTA)/O₃ system.
- Fe(II)(EDTA) chelate,
- UV,
- Ozone,
- Polyacrylamide,
- Viscosity
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