异养厌氧生物工艺同步脱氮除硫试验研究

Experimental Study on Simultaneous Removal of Ammonia Nitrogen and Sulfate with Heterotrophic Anaerobic Biological Process

在恒温水浴完全混合式厌氧反应器中接种普通厌氧污泥,投加人工配制的含硫含氮有机废水,进行异养厌氧生物同步脱氮除硫的连续试验研究,进水氨氮和硫酸根浓度分别为200mg/L和686mg/L。经过近100天的培养驯化后,反应器内出现了氨氮和硫酸根同步去除的现象,氨氮平均去除率为14.2%,硫酸根为61.7%。以连续流反应器污泥作为接种污泥进行批式试验,结果表明:改变进水的COD、氨氮和硫酸根浓度以及HRT,均能实现氨氮和硫酸根的同步去除,但其并未成为反应器内的主导反应。

Experimental study was performed to simultaneously remove ammonia nitrogen and sulfate with heterotrophic anaerobic biological process. The concentrations of ammonia nitrogen and sulfate were 200 and 686mgL-1 respectively. After start-up and acclimatization of this process for nearly 100 days, ammonia nitrogen and sulfate were removed at the same time in the reactor. The average removal of ammonia nitrogen was 14.2%, sulfate was 61.7%. Then using the continuous flow reactor sludge as an inoculation sludge to carry out the batch experiments, results showed that changing COD, ammonia nitrogen and sulfate concentration and HRT could achieve the simultaneous removal of ammonia nitrogen and sulfate. But it was not the dominant reaction in the reactor.