哈尔滨商业大学学报（自然科学版）Issue(2)：176-181,6.
冻融对碱性发酵污泥脱水性能的影响
摘要
Abstract
In order to study the effects of freezing -thawing on the alkline fermentation sludge dewater ability , experiments were carried out to the alkline sludge pH adjusted by Ca ( OH) 2 and NaOH respectively by measuring the capillary sunction time ( CST ) , particle , 70 minSV, soluble COD, proteins, carbohydrates, ammonia and orthophosphate .The results showed freezing-thawing conditioning can improve the dewater ability of alkline fermentation sludge well.The CST of sludge pH adjusted by Ca (OH)2 decreased to 21.4 s under -19~-13 ℃after 6 h and 18.5 s under -8 ℃after 24 h from 101.5 s.For the sludge pH ad-justed by NaOH the CST decreased from 1 058.6 s to 33.9 s at the end of freezing-thawing conditioning under natural conditioning , but remained at 300 s above under -8℃.It dem-onstrated that the SCOD , soluble proteins , carbohydrates , ammonia , and orthophosphate de-clined in different degrees for sludge pH adjusted by NaOH , but unchanged for sludge pH adjusted by Ca ( OH ) 2 during freezing -thawing conditioning .The SCFAs ( shorty chain acids) increased slightly for both of them .In total, the freezing-thawing is a possible way to improve the alkline fermentation sludge dewater ability and to obtain high organics recover -y efficiency .关键词
冻融/碱性发酵污泥/碱试剂/脱水性能Key words
freezing-thawing/alkline fermentation sludge/alkaline regent/dewater ability分类
资源环境引用本文复制引用
朱建平,彭永臻,李晓玲,苏高强,王淑莹..冻融对碱性发酵污泥脱水性能的影响[J].哈尔滨商业大学学报（自然科学版）,2014,(2):176-181,6.基金项目
国家自然科学基金（51178007）． （）
