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In this study, we discussed the advanced treatment process of printing and dyeing wastewater with the patented compounded biological filtration equipment (ZL200610069538.3). The experimental samples were collected from the second effluents of a printing and dyeing wastewater treatment plant. With the experiments of four single factors and the dynamic process under four optimum parameters values, discussions were taken in terms of the effects of PFS dosing quantity, hydraulic loading, filter materials volume ratio, and gas water ratio on COD, chromaticity and ammonia nitrogen respectively. The experimental results indicated that the optimum parameter values were PFS dosing quantity of 25mg/L, hydraulic loading of 0.4m3/ (m2·h), filter materials volume ratio (biological carbon over biological zeolite) of 1.2:1, gas water ratio of 4:1 respectively. When influents values ranges of COD, chromaticity and ammonia nitrogen were 90-110mg/L, 60-80times and 3-8mg/L respectively, the effluents of COD, chromaticity and ammonia nitrogen were less than 46mg/L, 10times and 1 mg/L respectively, which could meet the National Standard of Recycling and Miscellaneous Usages of Municipal Sewage on COD, chromaticity and ammonia nitrogen requirements.

In this study, we presented an approach to coking wastewater advanced treatment process with a patented wastewater treatment equipment. The samples were collected from the effluents of the biological treatment tank in a coking wastewater treatment plant. With the experiments of four static single factors and the continuing dynamic process, the discussions about the effects of pH value, influent loading, reaction time, and volume ratio on chromaticity, COD and NH3-N respectively were conducted. The experimental results identified that the optimum process parameters were pH of 3, influent load of 1m3/m2•h, reaction time of 4h and volume ratio of 2:1 respectively. When influents of chromaticity, COD and NH3-N were 210 times, 249.4mg/L, and 31.7mg/L respectively , the effluent of chromaticity, COD and NH3-N were 16 times, 49.7mg/L, and 9.5mg/L respectively, these values could meet the National standard of Recycling and Miscellaneous usages of Municipal Sewage on chromaticity, COD and NH3-N requirements.