Reciprocation mobile bottom-layer aeration system and aeration method thereof

Abstract

The invention provides a reciprocation mobile bottom-layer aeration system and an aeration method thereof. The reciprocation mobile bottom-layer aeration system comprises a truss, a truss moving unit, aeration components, a scraper, a fan and a blowing unit, wherein the truss spans on an oxidation channel; the truss moving unit comprises a guide track, truss rollers, a driving device and a limiting device; the aeration components comprise an aeration air supply tube which is fixed on the truss, aeration air supply branch tubes which are connected with one end of the aeration air supply tube in a radiation manner, fixing brackets which are used for surrounding the aeration air supply branch tubes, and aerators which are arranged inside the fixing brackets and are communicated with the aeration air supply branch tubes; the scraper is arranged at the lower end of the fixing brackets; the air outlet of the fan is communicated with the aeration air supply tube; the blowing unit comprises a blowing air supply tube, blowing air supply branch tubes and air ejectors; one end of the blowing air supply tube is communicated with the air outlet of the fan; the other end of the blowing air supply tube is connected with the blowing air supply branch tubes; the blowing air supply branch tubes are mounted at the lower ends of the fixing brackets; the air ejectors are arranged on the blowing air supply branch tubes and are used for blowing the scraper. By adopting the reciprocation mobile bottom-layer aeration system, dynamic aeration and oxygenation without blind areas or dead zones can be achieved.

Description

technical field [0001] The invention relates to the technical field of water treatment equipment, and more specifically, to a reciprocating bottom aeration system and an aeration method thereof. Background technique [0002] The aeration process is a key process in the aerobic (denitrification) process section of sewage biological treatment. The energy consumption for aeration and oxygenation accounts for more than 60% of the total energy consumption of sewage treatment. It does not have an advantage over other aeration devices, but on the surface, it seems that the bottom aeration method has a high utilization rate of oxygen in the bottom aeration, and the effective water depth of the oxidation ditch is set deeper than the surface aeration, so the current use of the bottom aeration method accounts for about the entire 30% of the market share. [0003] In fact, bottom aeration systems have several fatal flaws: [0004] 1. The bottom aeration system needs to be equipped wit...

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Problems solved by technology

[0004] 1. The bottom aeration system needs to be equipped with blower equipment for centralized gas supply, so a blower room needs to be built to prevent dust, protect the blower equipment from water, and isolate noise, but it increases the investment in infrastructure;

[0005] 2. Centralized air supply must be supplemented by air supply pipelines. The longer the air supply pipeline, the greater the pipeline loss, that is, the higher the energy consumption, and the higher the pipeline auxiliary installation costs;

[0006] 3. The phenomenon of uneven aeration during bottom aeration and oxygenation will lead to high dissolved oxygen concentration in some areas and low dissolved oxygen concentration in some areas;

[0007] 4. The diaphragm aerator is easy to block when the bottom aeration is used, and it decays year by year. It needs regular cleaning, maintenance and maintenance; after a few years, the aerator needs to be replaced regularly, and the replacement cost is high;

[0008] 5. When the fan stops supplying air, the sludge at the bottom of the oxidation ditch will fill the aerator, which will easily cause the aerator to be blocked;

[0009] 6. Once the aerator is blocked or damaged, it needs to be replaced immediately, otherwise it will affect the aeration effect; when the aerator is cleaned and replaced, it needs to stop production and production, which will affect the normal production; the aerator needs to be replaced regularly due to attenuation, and the cycle increases before re-investment ;

[0010] 7. Once the aerator is shut down, the sludge will bury the aerator. When it is started again, it will take more energy to stir the sludge away.

[0012] The traditional fixed bottom aeration mode has been used for decades, and the fatal flaw has always been recognized in the industry, but it has not been able to be broken through

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