Tubular electrolytic cell for domestic sewage treatment

Abstract

The invention discloses a tubular electrolytic cell for domestic sewage treatment. The tubular electrolytic cell is characterized in that the electrolytic cell is formed by sleeving a cathode external tube and an anode inner tube, wherein the cathode external tube is a titanium tube of which one end is sealed, a nozzle flange and a water inlet adapter tube are arranged at the other end of the titanium tube, and the water inlet adapter tube is perpendicular to the cathode external tube; the anode inner tube is a tube section of which one end is provided with a water outlet adapter tube; a ruthenium coating is arranged on an outer surface of the tube section; the water outlet adapter tube and the anode inner tube are in a manner of concentric circles; the anode inner tube is fixedly sleeved in the cathode external tube through a tetrafluoroethylene supporting piece; and the water outlet adapter tube is sleeved with a tetrafluoroethylene washer and is fixedly connected with a nozzle flange bolt through a flange cover. Compared with the prior art, the tubular electrolytic cell has the advantages that the operations of degradation of organic matters and sterilization and disinfection are performed in the same equipment, the reaction retention time is short, the tubular electrolytic cell is high in treatment efficiency, long in service life of electrodes, simple and convenient to operate, stable in operation and low in cost and is particularly suitable for narrow and small spaces of ship and marine structures.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a tubular electrolytic cell used for domestic sewage treatment of ships or islands. Background technique [0002] At present, the domestic sewage generated by ships at home and abroad is generally discharged into the sea after reaching the discharge standard through biochemical treatment. The biochemical treatment process uses microorganisms to degrade organic matter, which requires continuous and constant water inflow, so the equipment for sewage treatment is large in size. For maritime navigation, the smaller the equipment load, the better. At the same time, the number of operators on board is limited, and the easier the operation of the equipment, the greater the possibility of normal operation and the more obvious the treatment effect. The problems in the prior art are: heavy equipment load, large space occupation in ships and marine structures, long processing time,...

AI Technical Summary

Problems solved by technology

The problems existing in the prior art are: the load of the equipment is heavy, the space occupied by the ship and the marine structure is large, the processing time is long, the operation is unstable, and it is easy to affect the marine environment, and the processing capacity is low and the operating cost is high

The electrolytic cell generally adopts a plate structure. The water flow rate of this structure is slow, and the surface of the electrode is easy to scale. At the same time, the electrolytic oxidation reaction process is unevenly mixed, and it is often necessary to increase stirring (air stirring or mechanical stirring), otherwise the reaction residence time is longer and the reaction It requires a large space (generally requires a residence time of more than 30 minutes), and the reaction efficiency is low, and the electrode is easy to foul, which seriously affects the service life of the electrode.

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