新疆煤基压块活性炭在BAC工艺中的应用  

Application of Xinjiang coal-based briquetted activated carbon in BAC process

作　　者：董丽华[1] 陈志颖 韩英杰 杨晓红 潘淑杰 张光辉[1] 侯立安 DONG Lihua;CHEN Zhiying;HAN Yingjie;YANG Xiaohong;PAN Shujie;ZHANG Guanghui;HOU Li′an(School of Environmental Science and Engineering,Tianjin University,Tianjin 300072,China;Chinese People's Liberation Army Unit 96911,Beijing 100011,China)

机构地区：[1]天津大学环境科学与工程学院,天津300072 [2]中国人民解放军96911部队,北京100011

出　　处：《环境工程学报》2023年第8期2587-2595,共9页Chinese Journal of Environmental Engineering

基　　金：2019年研究生创新人才培养项目(YCX19056);天津大学自主创新基金(2018XZC-0080)。

摘　　要：鉴于新疆丰富的煤炭资源,本研究对由2种不同指标新疆煤基压块活性炭(LBC和HBC)组成的上向流活性炭柱构成的小试生物活性炭(biological activated carbon,BAC)工艺进行了为期约300 d的实验研究。考察了2种不同指标的压块活性炭柱(LBC-O_(3)与HBC-O_(3))的运行情况。结果表明,LBC-O_(3)对于COD_(Mn)的去除效果优于HBC-O_(3)(进水平均值为1.56 mg·L^(-1),出水平均值为0.55 mg·L^(-1));而HBC-O_(3)对于UV_(254)所代表有机物去除效果优于LBC-O_(3)(进水平均值为0.053 cm^(-1),出水平均值为0.005 cm^(-1))。LBC-O_(3)对COD_(Mn)的较佳去除性能,促成了活性炭表面微生物量的生长,进而构成了吸附和生物降解的良性循环;而兼具发达次微孔和中孔结构的HBC-O_(3)对UV_(254)代表的有机物表现出了靶向吸附性;微生物检测结果和炭柱出水中溶解性有机物的光谱特性分析验证了该结论。因此,结合目标水体中污染物的特性靶向选择相应指标(孔隙结构)的压块活性炭可取得更佳的BAC工艺处理效果:提高污染物去除率、节约资源,符合双碳目标。In view of the rich coal resources in Xinjiang,a lab-scale biological activated carbon(BAC)process consisting of two up-flow columns was conducted for about 300 days and its running status was investigated,in which two kinds of Xinjiang coal-based briquetted activated carbon(LBC and HBC)with different indicators were packed,denoted as LBC-O_(3)and HBC-O_(3)columns,respectively.The results showed that the COD_(Mn)removal effect by LBC-O_(3)was better than that of HBC-O_(3)(the average value of influent was 1.56 mg·L^(−1),and the average value of effluent was 0.55 mg·L^(−1)).The removal effect of organic compounds represented with UV_(254)by HBC-O_(3)was better than that of LBC-O_(3)(the average value of influent was 0.053 cm^(-1),and the average value of effluent was 0.005 cm^(-1)).The better adsorption performance of LBC-O_(3)on organic compounds represented by COD_(Mn)promoted the growth of microbial biomass on the surface of activated carbon,thus forming a good cycle of adsorption and biodegradation.HBC-O_(3)with developed sub-microporous and mesoporous structures showed targeted adsorption to organic compounds represented by UV_(254).The results of microbial detection during BAC process and three dimensional fluorescence spectra of influent and effluent of BAC columns confirmed the conclusion.Therefore,combining with the characteristics of pollutants in the target water,the targeted selection of the briquetted activated carbon was made and could achieve better BAC process treatment effect,which can improve pollutant removal rate and save resources,being in line with the goal of carbon emission peak and carbon neutrality.

关 键 词：新疆煤 压块活性炭 BAC工艺 选炭 高锰酸盐指数 

分 类 号：X703[环境科学与工程—环境工程]