好氧颗粒污泥对污泥碳源的反硝化出水处理效果

摘要

In order to further degrade residual organic and nitrogen compound in effluent of denitrification used sludge hydrolysate as carbon source.The test used sequencing batch reactor (SBR) inoculated aerobic granules to treat the denitrification effluent.The results showed that the average removal efficiency of NH+4-N was 80.3%, while the total inorganic nitrogen (TIN) and soluble chemistry oxygen demand (SCOD) could not be removed.NO-3-N and NO-2-N accumulated in the reactor.The average removal efficiency of protein was 9.8%.The three-dimensional fluorescence showed that tyrosine and tryptophan-like protein in the effluent decreased 6.6% and 15.6%, respectively.After adding sludge hydrolyzate into the SBR, the average removal rate of NH+4-N increased to 98.3%, and the average removal efficiency of TIN and SCOD were 69.05% and 56.59%.The average removal rate of carbohydrates and protein were 68.61% and 64.02%.After the treatment by aerobic granular sludge, the degradation efficiency of TIN, carbohydrate and protein content in denitrification effluent was greatly improved.So the organic matter and nitrogen-containing compounds could be further prolapsed.%为了进一步降解以污泥水解液为碳源的反硝化出水中残留的有机物和含氮化合物,试验采用接种了好氧颗粒污泥的序批式反应器(SBR)对污泥碳源的反硝化出水进行处理.结果表明,系统NH+4-N的平均去除率为80.3%,而总无机氮(TIN)和溶解性化学需氧量(SCOD)并未去除,反应器中发生了NO-3-N和NO-2-N的积累,蛋白质的平均去除率为9.8%,三维荧光测定结果显示,出水中的酪氨酸类和色氨酸类蛋白物质分别降低6.6%和15.6%;将反硝化出水与污泥水解液混合,NH+4-N平均去除率提高到98.3%,TIN和SCOD的平均去除率分别达到69.1%和56.6%,糖类和蛋白质的平均去除率分别为68.61%和64.02%.经过好氧颗粒污泥的处理,反硝化出水中的TIN、糖类和蛋白质含量均有所降低,实现了反硝化出水中有机物和含氮化合物的进一步去除.