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Straight row of industrial wastewater great damage to the ecological environment and endanger human health, while also restricting the sustainability of industrial development, especially high salt, high organic chemical wastewater pollution is serious, dealing with difficult, treatment prior to discharge is particularly important. This paper studied for a class of typical high-salt wastewater - solid epoxy resin production washing wastewater treatment process, focus on several washings produce low enriched wastewater biological treatment process accounting, materialized a biological treatment integrated process design, the initial domestication of the activated sludge, as well as a comparative study of Fenton oxidation, ozone oxidation, the final preliminary determine the low-concentrated the epoxy washing wastewater biological treatment and catalytic oxidation properties. The details are as follows: First, Huangshan, a chemical plant in the original 300t / d biological treatment device based on its main parameters: hydraulic retention time (HRT), temperature, pH value, fillers, the amount of oxygen in the accounting. The results show that: the existing apparatus can provide sufficient residence time and strictly in accordance with the principle of raking shunt waterway separately control the operating conditions, the low concentration of epoxy resin was washed wastewater active sludge acclimation, can achieve stable operation, and the effluent standards . Principle, then, according to the accounting results follow as far as possible using the original device and reasonable improvements were the low concentration of epoxy washing wastewater treatment capacity to expand from 300t / d to 500t / d materialized biological treatment of integrated process design. First, the experimental conditions of Fenton oxidation and ozonation were: (1) Fenton oxidation the H 2 O 2 concentration of 0.165g / L, H 2 O 2 with FeSO of 4 ยท the 7H 2 O the mass concentration ratio of 6.5:1, pH control in 3 ~ 5, at room temperature, reaction was stirred for 1h, and provide sufficient coagulation time; (2) Ozone oxidation, control the the ozone mixed gas flow rate of 4L / h to maintain the waste water the pH value of the original reaction, at room temperature for 30min . Further cost analysis found that, under the same processing costs the Fenton oxidation CODcr removal rate of 25%, higher than 15% of the ozone oxidation. Final choice the Fenton oxidation pretreatment method. In addition, for the original process aerobic treatment lead to low efficiency of processing sludge secondary sedimentation tank settling effect, to be treated in the original anaerobic (hydrolysis acidification), aerobic (biological contact oxidation) increased membrane bioreactor in order to strengthen the treatment effect. The results determine the Fenton oxidation pretreatment followed by hydrolysis acidification, biological contact oxidation, membrane bioreactor treatment process route. Then, according to the processing load of 500t / d, anaerobic biofilter, biological contact oxidation pond and membrane bioreactor process design, choose to optimize the operating parameters of the membrane bioreactor, the finalization of the respective main process parameters. The design results show that: in accordance with the integration process of the proposed design can achieve 500t / d low concentration of epoxy wastewater treatment standards row
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