Oxidation ditch system with synergistic interaction of spiral-flow aeration and plug flow nozzles

Abstract

The invention discloses an oxidation ditch system with synergistic interaction of spiral-flow aeration and plug flow nozzles. The oxidation ditch system comprises a water inlet passage and a water outlet passage which are arranged at two ends of an oxidation ditch and are communicated with the oxidation ditch, wherein a partition wall for dividing a water flow in the oxidation ditch into two paths is arranged in the oxidation ditch; arc islands are arranged in the parts, at two ends of the partition wall, of the oxidation ditch; the plug flow nozzles and spiral-flow shearing bubble aerators are sequentially arranged on the bottom edges of the parts, on two sides of the partition wall, of the oxidation ditch in a water flow direction; the plug flow nozzles and the spiral-flow shearing bubble aerators are respectively communicated to an air supply main pipe through an air supply branch; the air supply main pipe is communicated to an air blower. The oxidation ditch system has the advantages of uniform oxygen supply, good plug flow effect, no settlement and accumulation of active sludge, and complete stirring, mixing and contact of organic matters, microorganisms and oxygen.

Description

technical field [0001] The invention relates to the field of sewage and waste water treatment, in particular to an oxidation ditch system with synergistic effect of swirl aeration and push flow nozzles, which is used for new construction, expansion and reconstruction of urban sewage treatment and upgrading of sewage plants, as well as various Organic industrial wastewater treatment. Background technique [0002] Due to the dual characteristics of complete mixing and push flow, the oxidation ditch generally has a better treatment effect. In recent years, the application of oxidation ditch technology in my country has become increasingly widespread. Not only the number of oxidation ditches is increasing, but also its treatment scale and treatment objects are also expanding, and it has expanded to almost cover organic wastewater treatment in all industries. However, because the mastery of oxidation ditch technology is not comprehensive enough, there is still a lack of systemat...

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Problems solved by technology

Moreover, it is currently impossible to directly measure the oxygen mass transfer efficiency of this aerator in actual operation.

(2) Due to the influence of the power of the motor, the size of the impeller, the connection method of the bearing and the installation position of the submersible flow booster, it is difficult to meet the requirement of pushing forward along the level to keep the horizontal flow velocity in the ditch above 0.3 m / s.

In addition, these two types of equipment are used together, there are many electromechanical equipment, it is difficult to judge the working condition of the impeller, the energy consumption is high, and the maintenance workload is heavy.

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