【摘要】 采用ASBBR反应器作为高盐(10 gC l-/L)、高有机物浓度(COD为4 000 mg/L)榨菜废水的厌氧处理单元,考察了挂膜密度、负荷、水温等对去除COD的影响。结果表明:当水温为30℃、挂膜密度为50%时,分别在0.22 kgCOD/(m3.d)和4 kgCOD/(m3.d)的负荷下运行,相应的出水COD为95 mg/L和1 520 mg/L,分别满足直接排放和后续脱氮工艺对碳源的要求。当水温为10℃时,反应器对COD的去除率较30℃的下降了32%,将挂膜密度提高到70%可使COD去除率增加约4.5%;此外,向废水中投加0.1 mmol/L的甜菜碱,可提高COD去除率约9.5%。更多还原

【Abstract】 Anaerobic sequencing batch biofilm reactor(ASBBR),an innovative anaerobic treatment technique,was used to treat composite mustard tuber wastewater with high concentration organic substances(COD 4 000 mg/L),high salt(10 gCl~-/L) and high nitrogen.The results in various operational conditions are as follows: ① When the water temperature is 30 ℃ and the biofilm density of the reactor is 50%,the reactor operates with loading rates of 0.22 kgCOD/(m~3·d) and 4 kgCOD/(m~3·d) respectively,and the effluent COD is 95 mg/L and 1 520 mg/L respectively,satisfying the demand of direct discharge and denitrification.② When the water temperature is 10 ℃,the COD removal rate can decrease by 32%,thus increasing the biofilm density to 70%,it can also increase COD removal rate by 4.5%;furthermore,when 0.1 mmol/L of betaine is added into the wastewater,the COD removal rate can increase by 9.5%.更多还原