The invention discloses a low-consumption catalytic separation
wastewater treatment method which comprises the following steps: 1) enabling
wastewater to pass through a
grating well and an
oil separation tank, and separating suspended matters; 2) dissolving active gas in water to generate gas-dissolved water; 3) performing demulsification treatment; 4) performing
settling treatment; (5) introducing dissolved
air water into the air floatation tank, and releasing fine bubbles to enter the
wastewater, so as to realize primary separation of the wastewater; 6) carrying out
biodegradation; 7) decomposing in an
ozone tank to obtain oxygenolysis water; 8) performing oxidation treatment; 9) performing demulsification treatment; 10) filtering the wastewater obtained by
sedimentation treatment through a filtering device, and discharging the filtered wastewater into a collecting tank; according to the method, gas activated by an
electric field is used as a gas source, dissolved gas water is generated and released into
sewage, fine bubbles are generated, the demulsification effect is achieved, the net capturing effect is good,
colloid instability is promoted, agent consumption is reduced, the purpose of enhancing separation of emulsified substances,
suspended solids and water is achieved, the
sludge yield is reduced, and the agent content in
sludge is reduced.