不同填料对反应器充氧能力影响的比较研究  

Study on the effects of different bio-media on reactor oxygenation capacity

作　　者：刘晓旭[1] 费庆志[1] 

机构地区：[1]大连交通大学环境工程研究所,辽宁大连116028

出　　处：《环境污染与防治》2007年第3期190-192,215,共4页Environmental Pollution & Control

摘　　要：填料是生物接触氧化工艺的关键因素之一。选取悬浮式和悬挂式填料各两种,通过清水曝气实验,测定在不同投加率和进气量的情况下DO的变化,分析填料对曝气池DO的转移速率有无影响。实验结果表明:对悬浮式填料而言,选择合适的曝气量,投加率在一定的范围内时,随着投加率的增加,曝气池充氧能力增强;对悬挂式填料而言,弹性立体填料的放射状细条结构对气泡起到较强的切割作用,提高了充氧效率。曝气池充氧能力受填料投加率的影响程度顺序为:弹性立体填料>立体块式悬浮填料>内置悬浮球形填料>盾式填料。Bio-media was one of the major affection factors for the performance of bio-contact oxidation. Four different kinds of bio-media were introduced and the influence of the bio-media on the change of dissolved oxygen（DO） at different bio-media dosage rates and air influent were explored. The results showed that, for suspended bio-media, the oxygen transfer rate increased with the increasing of dosage rate under the optimum dosage rate; Whereas for hanging bio-media, the pinstripe structure of elastic filler could improve the oxygenation capacity. The sequence of the effect of bio-media dosage rates on the oxygen transfer rate obey the logic： elastic filler〉solid bio-media〉suspended bio-media〉 combined bio-media.

关 键 词：填料 投加率 充氧能力 

分 类 号：X703[环境科学与工程—环境工程]