Pure oxygen aeration system for wastewater treatment

Abstract

Disclosed is a pure oxygen aeration system for wastewater treatment, which biologically treats wastewater using microbes of activated sludge in an aeration tank. The pure oxygen aeration system comprises a pure oxygen supply device including a pure oxygen generator and at least one oxygen supply pipe extending from the pure oxygen generator and directed toward the internal space of the aeration tank, a high-speed jet injection device installed in the aeration tank, a mixed liquor circulation device for circulating and introducing the mixed liquor in which microbes of activated sludge, wastewater and pure oxygen are mixed, into the aeration tank through the high-speed jet injection device, and an oxygen suction pipe for sucking in the oxygen remaining in the headspace of the aeration tank and reintroducing the sucked oxygen into the water in the aeration tank. The present invention provides a pure oxygen aeration system for wastewater treatment which is economical, increases an oxygen utilization efficiency, secures easily the required land, saves the expense and can maintain an optimum level of dissolved oxygen and discharge smoothly and rapidly harmful gases.

Description

technical field [0001] [0001] The present invention relates to a pure oxygen aeration system for wastewater treatment, and more particularly to a pure oxygen aeration system for wastewater treatment with an improved structure, which is beneficial for supplying an aeration tank Pure oxygen and delivery of oxygen in aeration tanks. Background technique [0002] [0002] Conventional wastewater treatment methods include pretreatment processes for screening solids such as suspended solids, sand, and clay, biological decomposition processes for removing and decomposing organic matter and nutrients in wastewater using activated sludge, and processes for precipitating activated sludge, A solid-liquid separation process in which the treated water is poured and the settled activated sludge is returned to the biodegradation treatment tank, wherein the microorganisms in the activated sludge increase in number during the biodegradation process. [0003] [0003] The biological decompositio...

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Problems solved by technology

[0024] [0024] In addition, even if the depth of the aeration tank is increased, there is still the problem of reduced oxygen use efficiency and difficulty in maintaining an optimal dissolved oxygen level in the lower part of the aeration tank

[0025] [0025] In addition, because harmful gases such as carbon dioxide generated in multiple pools are discharged only from the last pool in order to reduce oxygen loss, it is difficult to discharge harmful gases in time, so microorganisms may be damaged due to the toxicity of harmful gases, and the pH value reduce

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