[1]王赛,时玉龙,蒋奇海,等.两种碳基材料对二级出水中有机物的去除特性[J].中国给水排水,2021,37(5):43-50.
　WANG Sai,SHI Yu-long,JIANG Qi-hai,et al.Removal Characteristics of Organic Matters from Secondary Effluent by Two Types of Carbon Based Adsorbent[J].China Water & Wastewater,2021,37(5):43-50.
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两种碳基材料对二级出水中有机物的去除特性

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第5期 页码: 43-50 栏目: 出版日期: 2021-03-01
Title:
Removal Characteristics of Organic Matters from Secondary Effluent by Two Types of Carbon Based Adsorbent
作者:
王赛1，时玉龙2,3，蒋奇海2，许骐2,3，田雅琦2,3，李魁晓2,3，郑晓英1
(1.北京工业大学北京市水质科学与水环境恢复工程重点实验室，北京100124；2.北京城市排水集团有限责任公司，北京100022；3.北京市污水资源化工程技术研究中心，北京100124)
Author(s):
WANG Sai1,SHI Yu-long2,3,JIANG Qi-hai2,XU Qi2,3,TIAN Ya-qi2,3,LI Kui-xiao2,3,ZHENG Xiao-ying1
(1. Beijing Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China; 2. Beijing Drainage Group Co. Ltd., Beijing 100022, China； 3. Beijing Engineering Research Center of Wastewater Resource, Beijing 100124, China)
关键词:
活性炭; 活性焦; 生物活性焦; 二级出水; 再生水厂
Keywords:
activated carbon; activated coke; biological activated coke; secondary effluent; water reclamation plant
摘要:
针对活性炭与活性焦两种碳基吸附材料，分别开展静态吸附与动态过滤实验，考察了两者对城镇再生水厂二级出水中有机物的去除效果。结果表明：活性焦介孔及大孔丰富，对应孔体积为0.436 cm3/g，为活性炭的1.6倍；准二级动力学模型更适用于两种材料对COD的吸附动力学拟合，活性焦动力学吸附速率常数k2为活性炭的2倍；水温为22 ℃时，活性焦与活性炭对COD的Langmuir饱和吸附量分别为230.38 、94.14 mg/g。在近4个月的连续运行中，活性焦滤柱对有机物的去除效果全程优于活性炭滤柱，尽管两滤柱在由单纯吸附向生物吸附降解转化的过程中对有机物的去除率有所降低，但对COD的去除率仍可分别稳定在28.43%和22.26%。活性焦颗粒与活性炭颗粒表面ATP含量最高分别为7 032.94、5 753.52 ng/g。此外，活性焦滤柱对1~10 ku有机物组分，以及腐殖酸类物质、溶解性微生物代谢产物等不同荧光特性有机物均有较好的去除效果。与活性炭相比，活性焦对再生水厂二级出水中有机物的去除效果更优。
Abstract:
In this study, batch adsorption and continuous filtration experiments were conducted to investigate the effectiveness of activated coke and activated carbon for removing organic matters from secondary effluents of water reclamation plant. The activated coke was shown to be a mesoporous structure with macropores and mesopores volume of 0.436 cm3/g, which was 1.6 times higher than that of activated carbon. Kinetic studies revealed that the quasi-second-order kinetic model was more suitable for simulating COD adsorption by two materials, and the adsorption rate constant k2 of COD onto activated coke was twice as high as it for activated carbon at dosage of 1.0 g/L. The saturated adsorption capacity for COD was 230.38 mg/g and 94.14 mg/g using activated coke and activated carbon respectively based on Langmuir isotherm at 22 ℃. Continuous filtration experiments showed that the activated coke filter performed better than the activated carbon filter in organic matters removal during four months operation. The removal efficiency of COD gradually decreased in development of fresh activated coke and activated carbon to biological activated coke and activated carbon, and finally maintained at 28.43% and 22.26% respectively. The total adenosine tri-phosphate (ATP) content of activated coke and activated carbon particles was 7 032.94 ng/g and 5 753.52 ng/g. In addition, activated coke filter obtained an effective removal of organic fractions with molecular weight of 1-10 ku, as well as organic matters with different fluorescent characteristics, such as fulvic acid and soluble microbial products. Compared with activated carbon, activated coke is more effective in organic matters removal from secondary effluents.

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更新日期/Last Update: 2021-03-01