The invention provides an electrochemical device and a method for treating high-concentration
ammonia organic
wastewater and a method. The device is divided into an
anode chamber and a
cathode chamber through a diaphragm; a water inlet is formed in the top part of the
anode chamber; a pipeline with a valve communicated with the top part of the
cathode chamber is arranged on the bottom part of the
anode chamber; a water outlet is formed in the bottom part of the
cathode chamber; an alga-
bacteria biofilm is arranged on the surface of a cathode; an
ammonia nitrogen-resistant electroactive
biofilm is arranged on the surface of an anode; the cathode and the anode are connected with an adjustable
resistor and a photocell controlled by a timing
relay. The device respectively removes an
organic matter and
ammonia nitrogen on the anode and the cathode, prevents the influence on the cathode caused by that a
continuous flow from bringingcarrys the organic matters from the anode so as to influence the cathode, and eliminates the phenomenon that a
nitration liquid reflows to the anode so as to bring
oxygen and
nitrate to influence on the anode caused by that
nitration liquid reflows to the anode and brings
oxygen and
nitrate in. A cathode
algae alternative dark light reaction and phycomycete synergism are utilized, so that multi-way
denitrification such as bio-
nitrification-
denitrification, electrochemical reduction and
algae absorption is realized. Meanwhile, the photocell discharges to intensify the operation of a drive device at night. The device is self-controlled in energy, and can be used for sustainably and high-efficiently treating the high-concentration ammonia organic
wastewater.