| High-concentration organic wastewater is not only difficult to treat ,but also exist the carcinogenic ,aberrance and mutagenic harm to the nature. So to study and develop the treatment technology of high-concentration organic wastewater is one of hotspots in scientific researches.According to the characteristics of chemical fibre wastewater , and on the basis of contrasting experiment of eight types AOPs technology , the thesis determine UV/Fenton process as the treat method. Throughing single influence factor changing experiments ,the curves between influence factors and COD removals of UV/Fenton process are obtained . The affecting mechanisms and affecting rules of each influence factors are summarized. The thesis proposes a mathematics model between influence factor and COD removals on the analysis of experiment datas with the help of Spss software ,and this model can well forecast the effect which is checked by experiment.The thesis determine a treatment project and the optimal operating conditions for chemical fibre wastewater . The treatment project is divided into three steps:(1) deamination by heating ;(2)dilution;(3)UV/Fenton oxidation. UV/Fenton oxidation is the kernel of this project and its operating conditions are as following: adding H2O2=28g/l(2/3Qlh); adding Fe2+=700mg/l; PH=4; t=90min; T=30C .After treating , the COD concentration of chemical fibre wastewater reduce from 380,000mg/l into 6410mg/l, NH3-N concentration from 26,530mg/l into 715mg/l, and the ratio of BOD5/COD rise from 0.035 to 0.30 which indicate the wastewater can be treated by biologic. The experiment result provide a well foundation for the subsequent biological treatment. |
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