生物活性炭深度处理焦化废水的研究

采用生物活性炭技术深度处理焦化厂生化后出水。结果表明，焦化厂生化后出水（COD为200mg／L、色度为900度）经生物活性炭处理后，COD降为46．9mg／L、色度降至25．8度，达到国家工业再生用水水质标准（COD小于60mg／L，色度小于30）；并与颗粒活性炭深度处理焦化废水相比，生物活性炭法处理焦化废水COD及色度的去除率分别提高了13．4％和5．2％，且生物活性炭使用寿命是颗粒活性炭的3．3倍，生物活性炭的吨水材料费为1．4元，比颗粒活性炭低3．26元。生物活性炭法是一种有效、低成本的焦化废水深度处理方法。

Study on advanced treatment of coking wastewater with biological activated carbon process

Study the advanced method of biological activated carbon （ BAC ） treated bio-treatment outflow of coking wastewater. Results show that the bio-treatment outflow of coking wastewater （COD 200 mg/L, chroma 900） is treated by biological activated carbon , the COD and chroma respectively reduce to 46.9 mg/L and 25.8, up to the national industrial regeneration of water quality standards （COD 〈 60 mg/L, chroma 〈 30）. Compared with granular activated carbon（GAC） ,the treantmentof BAC rise the removal of the COD and chroma separately up to 13.4% and 5.2%. And the service life of BAC is 3.3 times of granular activated carbon, the material fee per ton water of BAC is 1.4 yuan which is 3.26 yuan less that of granular activated carbon. Biological activated carbon is an effective and costless advanced method of coking wastewater.