Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang Selangor, Malaysia.
Water Sci Technol. 2010;62(1):42-7. doi: 10.2166/wst.2010.239.
The research conducted a study on decomposition and biodegradability enhancement of textile wastewater using a combination of electron beam irradiation and activated sludge process. The purposes of this research are to remove pollutant through decomposition and to enhance the biodegradability of textile wastewater. The wastewater is treated using electron beam irradiation as a pre-treatment before undergo an activated sludge process. As a result, for non-irradiated wastewater, the COD removal was achieved to be between 70% and 79% after activated sludge process. The improvement of COD removal efficiency increased to 94% after irradiation of treated effluent at the dose of 50 kGy. Meanwhile, the BOD(5) removal efficiencies of non-irradiated and irradiated textile wastewater were reported to be between 80 and 87%, and 82 and 99.2%, respectively. The maximum BOD(5) removal efficiency was achieved at day 1 (HRT 5 days) of the process of an irradiated textile wastewater which is 99.2%. The biodegradability ratio of non-irradiated wastewater was reported to be between 0.34 and 0.61, while the value of biodegradability ratio of an irradiated wastewater increased to be between 0.87 and 0.96. The biodegradability enhancement of textile wastewater is increased with increasing the doses. Therefore, an electron beam radiation holds a greatest application of removing pollutants and also on enhancing the biodegradability of textile wastewater.
该研究采用电子束辐照与活性污泥法相结合的方法，对纺织废水的分解和可生物降解性增强进行了研究。本研究的目的是通过分解去除污染物，并增强纺织废水的可生物降解性。废水先经过电子束辐照预处理，然后再进行活性污泥处理。结果表明，未经辐照的废水经活性污泥处理后，COD 去除率可达 70%79%；而经辐照（剂量为 50kGy）处理后的出水 COD 去除率可提高到 94%。同时，未经辐照和辐照的纺织废水的 BOD(5)去除率分别为 80%87%和 82%99.2%。辐照纺织废水的最大 BOD(5)去除率出现在处理过程的第 1 天（HRT 为 5 天），为 99.2%。未经辐照废水的生物降解性比为 0.340.61，而辐照废水的生物降解性比增加到 0.87~0.96。随着辐照剂量的增加，纺织废水的可生物降解性增强。因此，电子束辐照在去除污染物和增强纺织废水的可生物降解性方面具有很大的应用潜力。
