Biological sewage treatment device
A sewage biological treatment and sewage technology, applied in the field of sewage biological treatment equipment, can solve the problems of a large number of connected pipelines, the energy of aeration gas is not fully utilized, and the reliability of the equipment is reduced.
Active Publication Date: 2014-01-22
金锣水务有限公司
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Problems solved by technology
Therefore, the sludge return pump is usually installed at a specific location, which limits the flexibility of process layout, and often requires a large number of connecting pipelines, which increases equipment investment and reduces the reliability of the entire device
[0003] In addition, in sewage biological treatment, the aeration fan is usually the main energy-consuming equipment, but the aeration gas is usually discharged directly into the atmosphere after the aeration treatment, so the energy in the aeration gas is not fully utilized, making High energy consumption of sewage biological treatment plant
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[0041] Some embodiments of the present invention will be further introduced below in conjunction with the accompanying drawings, but it is not intended to limit the protection scope of the present invention.
[0042] figure 1 It is a structural schematic diagram of an embodiment of the sewage biological treatment device according to the present invention, wherein the sewage biological treatment device includes anoxic treatment section (S1), sedimentation section (S2) and aeration section (S3), which are arranged in the same In the cylinder, they are separated from each other by partitions.
[0043] The sewage feed is sent to the anoxic treatment section (S1) as influent through a sewage feed supply device (which may be a sewage pump or a water drawing device, not shown). In the anoxic treatment section (S1), the sewage feed is mixed with the concentrated mixed liquid return equipment (including the concentrated mixed liquid pipe (3), conduit (9), gas-liquid mixture pipe (10) ...
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The invention relates to a biological sewage treatment device. The biological sewage treatment device comprises concentrated mixed liquor refluxing equipment, wherein the concentrated mixed liquor refluxing equipment is set so that the concentrated mixed liquor can be driven to flow by a gas which can be an aerated gas, especially the aerated gas subjected to aeration treatment. The biological sewage treatment device can fully utilize the energy of the aerated gas to realize refluxing of concentrated mixed liquor, thus energy consumption and moving parts of the whole device are obviously reduced. The biological sewage treatment device has the characteristics of high efficiency, energy conservation, high reliability, small size and the like.
Description
technical field [0001] The invention relates to a sewage biological treatment device, wherein the concentrated mixed liquid return equipment of the sewage biological treatment device is set to use gas to drive the concentrated mixed liquid to flow. In particular, said gas is an aeration gas for said sewage biological treatment plant. Background technique [0002] Usually in the sewage biological treatment device, the mixed liquid is aerated in the aeration tank and then left in the sedimentation tank to separate the supernatant (or called "effluent") and the concentrated mixed liquid (or called "sewage"). Sludge"), at least part of the concentrated mixed liquor needs to flow back to the aeration tank (or "sludge return") to mix with the sewage feed (or "influent"). Sludge return is usually accomplished using a sludge return pump (usually a centrifugal pump). However, sludge return pumps consume additional energy and require frequent maintenance. In addition, the sludge re...
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IPC IPC(8): C02F3/30
Inventor 李进民周连奎李大勇
Owner 金锣水务有限公司