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The absorption tail liquid organic waste gas has a high organic content, refractory, general method is difficult to deal with looking for cost-effective absorption tail liquid handling, become the focus points of the set of technologies to promote organic waste gas absorption method. Fenton oxidation and room temperature upflow anaerobic sludge blanket (UASB) - biological contact oxidation Combined Process simulation containing acetone, ethyl acetate, xylene absorption tail solution. Self Fenton oxidation device containing one-component organic matter, two-component organic matter and three groups were mixed organic absorption tail liquid Fenton oxidation process investigated Fenon oxidation treatment effect; study H2O2 and Fe2 concentration, pH, reaction time and other factors on the removal effect, determine the optimum parameters of the reaction. The results showed that: Fenton oxidation of single-component, two-component and three-component organic absorption tail solution has better results. Wherein the unit COD consumption H202 least single group is divided into the absorption tail solution containing xylene, at a pH of 7.3, COD: by H2O2: of FeSO4 · 7H2O = 1:1.04:3.53 (mass ratio), the initial COD is 12850mg / L containing xylene absorption tail solution works best, up 71.36%; the unit COD consumption H202 least double component containing acetone and xylene absorption tail solution at a pH of 7.3, the COD: H2O2: FeSO4 · 7H2O = 1:1.33 : 0.37 (mass ratio), the initial COD for 42500m / L absorption tail solution containing acetone and xylene, the treatment effect is preferably up to 80.24%; at a pH of 7.5, COD: H2O2: of FeSO4 · 7H2O = 1: 1.57:0.37 (mass ratio), the initial COD 39050m / L containing acetone, ethyl acetate and xylene absorption tail liquid treatment effect is preferably up to 80.24%. Fenton oxidation test, H202, and the Fe2 concentration has the best value, with increasing concentration, increased processing efficiency, but to a certain extent, no significant increase processing efficiency; absorption Fenton oxidation treatment of high concentration wastewater in acidic and original pH conditions, and the treatment efficiency is not a big difference. UASB-biological contact oxidation Combined Process containing acetone, ethyl acetate, xylene absorption tail liquid, the effects of the treatment effect of the combined process; UASB and biological contact oxidation pond health, and UASB in particle pollution the characteristics of the mud. The test results showed that: 1, after 197 days of running, COD 7550m / L absorption tail liquid after UASB reactor, the COD removal efficiency of 72%, and then treated by biological contact with oxygen pool, COD removal up to 99%. UASB volume load of 2.06kg COD / (m3 · d), the maximum load of the reactor, the volume of bio-contact oxidation pond negative of Heda 1.35kgCOD / (m3 · d), there is potential to improve. UASB-biological contact oxidation process operating conditions: the value of the UASB internal VFA / BA of 0.03-0.28 between better buffering capacity, the pH is basically in the best range of 6.5-7.8, water temperature than water The high water temperature of from 0 to 3 ° C; biological contact oxidation pool pH value is substantially in the range of 6-8. Anaerobic granular sludge: sludge VSS / SS value as domestication has increased the proportion of large particles of sludge increased. The end of domestication, the UASB sludge beds Zone VSS / SS value of 0.6, the particle size of greater than 3% 2mmm granular sludge, a particle size of less than 0.1mm (52%); suspended sludge bed area VSS / SS value of 0.55 particle size greater than 2mm (1%), accounted for 75% less than 0.1mm. Fenton oxidation is better pretreatment effect on the absorption tail liquid UASB-biological contact oxidation process in the reactor volume load range has better results and fewer such studies, therefore, its study has theoretical and practical significance.
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