Patent ID: 7300591
Filing Date: 2007-11-27
Classification: C02F

Abstract:
1. A wastewater treating method for treating nitrogen compounds in a for-treatment wastewater by an electrochemical technique comprising: an ammonia removal treatment step of removing ammonia nitrogen produced in the for-treatment wastewater from the for-treatment wastewater, and a phosphorus removal treatment step of switching polarities of the electrodes to treat phosphorus compounds in the for-treatment wastewater by an electrochemical technique, wherein at least portions of a pair of electrodes are immersed in the for-treatment wastewater, a material of one of the electrodes constituting an anode is an insoluble conductor, and a material of the other electrode constituting a cathode is an element in the group VIII of the periodic table, a conductor containing the element in the group VIII, or a conductor covered with the element in the same group or the conductor containing the element in the same group.