废水中的脱氮除硫研究(英文)

Simultaneous removal of ammonium and sulfate from synthetic wastewater by anaerobic biodegradation

随着氮、硫污染物对江河湖泊污染的扩大,同步脱氮除硫已成为净化水体的一个重要课题。试验中采用UASB反应器,接种含有厌氧氨氧化菌的污泥处理含有氮硫的废水。通过硫酸盐取代亚硝酸作为电子受体,驯化同步脱氮除硫。进水浓氨氮和硫酸盐浓度分别控制在50～60mg?L-1和210～240mg?L-1的情况下,60天后得到一定的稳定处理效果,出水氨氮和硫酸盐浓度为30mg/L和160mg?L-1。这种新型的脱氮除硫现象有助于为氮硫循环开辟新的途径。

The contaminations by ammonium and sulfate compounds in wastewaters and water bodies are critical problems. Excessive nitrogenous compounds released into the public water bodies affect downstream water quality. Some of the problems that ammonium can cause include eutrophication of the receiving waters , potential hazard to human or animal health and deterioration of water quality The accumulation of sulfate-rich sediments in lakes, rivers and sea may cause the release of toxic sulfides that can provoke damages to the environment, such as odor and corrosion. Therefore, it is necessary that both ammonium and sulfate rich wastewaters require treatment before being released into the environment.