Method for starting biological denitrification of salt-containing sewage and controlling release of N2O

• Main Authors: XU XIAOPING, ZHANG MING, LI JIYUAN, ZHAO WEI, SUN DUNWEI, HE RUI
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2016
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention provides a method for starting the biological denitrification of salt-containing sewage and controlling the release of N2O. According to the method, the effects of removing nitrogen and controlling the release of N2O are achieved by controlling process operating conditions under the condition that sludge is acclimated by virtue of salt-containing sewage. Compared with the prior art, the method has the advantages that by virtue of acclimatization through a proper amount of salt and the adjustment of process operating time and aeration rate, the short-cut nitrification and the denitrification of a denitrification system are achieved under a certain salinity level condition, and the release volume of N2O is reduced. 本发明提供了种含盐污水生物脱氮启动及NO释放控制方法，通过污泥在含盐污水的驯化条件下，并通过控制工艺运行条件来达到脱氮及NO释放的控制。与现有技术相比，本发明中通过适盐驯化，调整工艺运行时间及曝气量使脱氮系统在定盐度水平条件下达到短程硝化反硝化，并实现NO释放量的减量。