摘要
以超高盐度及高有机物浓度的榨菜腌制废水为研究对象,通过中试考察负荷对厌氧序批式生物膜反应器(ASBBR)处理效能的影响。榨菜腌制废水的盐度为70 g/L(以Cl-计)、COD为8 639 mg/L,在温度为25～30℃、负荷为5 kgCOD/(m3.d)条件下,ASBBR反应器对COD的平均去除率达到90.0%,最大比产甲烷速率为302～308 mLCH4/(gVSS.d);反应器对大分子和小分子有机物都表现出了较高的去除效能,其中对分子质量>5 ku的大分子有机物的去除率为87%,对小于5 ku的小分子有机物的去除率为84%。SEM检测表明,生物膜结构紧密,优势菌群主要有甲烷杆菌目、甲烷八叠球菌目、甲烷微菌目和少量丝状菌。
Mustard tuber wastewater with hypersalinity and high organic concentration was selected to investigate the influence of organic loading rate on the treatment efficiency of anaerobic sequencing batch biofilm reactor （ASBBR） in a pilot test. Under the conditions of 70 gC1-/L salinity, 8 639 mg/L COD, 25 to 30 ~C temperature and 5 kgCOD/（m3 ~ d） organic loading rate, the average removal rate of COD in the ASBBR was 90.0% , and the maximum SMA was 302 to 308 mLCHJ（gVSS ~ d）. Both macromolecular organics and mieromolecular organics could be effectively removed in the ASBBR. The removal rate of organics with molecular weight of more than 5 ku was 87% , and that of organics with mo- lecular weight of less than 5 ku was 84%. SEM analysis showed that the structure of biofilm was com- pact, and the predominant microorganisms were Methanobacteriales, Methanosarcinales, Methanomicrobi- ales and a small amount of filamentous bacteria.
出处
《中国给水排水》
CAS
CSCD
北大核心
2013年第1期18-21,共4页
China Water & Wastewater
基金
国家水体污染控制与治理科技重大专项(2008ZX07315-004)
关键词
ASBBR
榨菜废水
负荷
anaerobic sequencing batch biofilm reactor （ASBBR）
mustard tuber wastewater
loading rate
