UASB处理沤麻废水回用于沤麻的试验  

Treating of Flax Retting Wastewater by UASB for Reuse on Flax Retting

作　　者：任友昌[1] 宁平[2] 冯权利[3] 

机构地区：[1]昆明冶金高等专科学校环境工程学院,昆明650033 [2]昆明理工大学环境科学与工程学院,昆明650093 [3]昆明理工大学化学工程学院,昆明650224

出　　处：《中国沼气》2010年第5期7-9,共3页China Biogas

基　　金：云南省教育厅基金项目(14036076)

摘　　要：采用UASB反应器处理亚麻沤制废水,水力停留时间为24 h,进水COD浓度为6000～7100 mg.L-1时,出水COD浓度降低到2000 mg.L-1左右,COD去除率达到60%以上;沤麻废水经UASB处理后再回用于沤麻,沤麻过程中COD和pH的变化趋势与只用自来水沤麻相似,当COD小于2000 mg.L-1时,脱胶时间为80 h左右,比自然脱胶时间缩短10 h,而COD大于2000 mg.L-1时,脱胶时间反而比自然脱胶长,表明沤麻废水经处理COD在2000 mg.L-1以内再回用于沤麻是可行的。In this paper,treatment and recycling of flax retting wastewater by UASB reactor has been conducted.The result proved that COD are reduced from 6000～7100 mg·L-1 to about 2000mg·L-1 with 24 h retention time in UASB reactor.The removal rate kept over 60%.And the treated wastewater was used to flax retting again.The COD and pH changes are similar with flax retting with tap water.When the COD of treated wastewater was within 2000 mg·L-1,the retting time of flax is about 80 hours in reuse,and it was 10 hours shorter than the retting with tap water.When the COD was greater than 2000 mg·L-1,the retting time was longer than the retting with tap water,which indicated that it is feasible to reuse the treated flax retting wastewater when the COD was within 2000 mg·L-1.

关 键 词：UASB 沤麻废水 回用 脱胶 

分 类 号：S216.4[农业科学—农业机械化工程] X703[农业科学—农业工程]