摘要
利用絮凝光合细菌结合三相生物流化床反应器进行模拟污水净化研究,结果表明,在3%PAC溶液投加量为60 m L/L时,光合细菌絮体具有更好的沉降性能;在批式实验中,投菌量为20%(V菌/V水)、C/N值为11～15、好氧—黑暗条件下,絮凝光合细菌使得COD和NH_4^+-N在48 h内的最大去除率分别达到93. 4%和57. 8%;在连续实验中,反应器以气水比为10/1、HRT=48 h的条件连续运行,COD出水浓度为22～85 mg/L、去除率为84. 9%～96. 5%,NH_4^+-N出水浓度为14. 8～19. 6 mg/L,去除率为54. 2%～60. 9%,具有稳定的污水净化效果,同时有效解决了光合细菌易流失的问题。
The simulated wastewater was treated with the three phase biological fluidized bed reactor filled with flocculation photosynthetic bacteria.The results showed that the flocculation of the photosynthetic bacteria demonstrated a better performance in sedimentation when the dose of 3%PAC solution was 60 ml/L.In the batch experiment,based on the bacterium dosages of 20%(V/V),C/N value of 11~15 and aerobic-dark,the maximum removal rate of COD and NH 4+-N by flocculation photosynthetic bacteria were 93.4%and 57.8%respectively within 48 hrs.In the continuous experiments,the reactor worked continuously under the condition of the gas and water ratio of 10/1,HRT=48 h.The outlet concentrations of COD and NH 4+-N were 22~85 mg/L and 14.8~19.6 mg/L,and the removal rate were 84.9%~96.5%and 54.2%~60.9%,respectively.The established method is stable in effectively purifying sewage,and also effectively solve the problem of the fast loss of the photosynthetic bacteria.
作者
黄业翔
莫创荣
胡文科
龙菲妃
方译晨
黄俊霖
李金勇
HUANG Ye-xiang;MO Chuang-rong;HU Wen-ke;LONG Fei-fei;FANG Yi-chen;HUANG Jun-lin;LI Jin-yong(School of Resources,Environment and Materials,Guangxi university,Nanning 530004,China)
出处
《广西大学学报（自然科学版）》
CAS
北大核心
2018年第5期2061-2068,共8页
Journal of Guangxi University（Natural Science Edition）
基金
广西自然科学基金资助项目(2010GXNSFA013004)
关键词
光合细菌
三相生物流化床
絮凝
模拟污水
photosynthetic bacteria
three phase biological fluidized bed
flocculation
simulated wastewater
