Flotation cabinet device with multi-stage flow guide and overflow structural form

Abstract

The invention relates to a flotation cabinet device with a multi-stage flow guide and overflow structure form. The flotation cabinet device comprises a flotation cabinet body and a solid matter collecting chamber, wherein the top of the flotation cabinet body is conical and is provided with an opening; an opening is formed in the bottom of the solid matter collecting chamber; the conical top of the flotation cabinet body is positioned in the inner cavity of the solid matter collecting chamber; a flushing water pipe is arranged in the solid matter collecting chamber; a first-stage flow guide groove, a second-stage flow guide groove and a third-stage flow guide groove are sleeved in the flotation cabinet body stage by stage and are coaxially arranged with the flotation cabinet body; the topof a primary diversion trench is open and is positioned below the lower edge of the conical top of the flotation cabinet body; a domestic sewage inlet pipe is communicated with the first-stage flow guide groove, a clear water outlet pipe is communicated with the second-stage flow guide groove, the two ends of the supernatant inlet pipe are connected with the flotation cabinet body and the third-stage flow guide groove respectively, and a fixed bed reactor, a radial compressed air straight pipe and an annular compressed air pipe are further arranged in the flotation cabinet body. The device iscompact in arrangement, convenient to use, reliable in operation, high in treatment capacity and low in energy consumption.

Description

technical field [0001] The invention relates to the treatment of ship's domestic sewage, in particular to a flotation cabinet device in the form of multi-stage diversion and overflow structure. Background technique [0002] Domestic sewage treatment is a necessary condition for the continuous and normal operation of ships and offshore platforms. Currently, domestic sewage from ships and offshore platforms is usually treated by biofilm or electrochemical methods. [0003] Due to the interactive influence of environmental conditions such as temperature, humidity and swing, residence time, operation mode, discharge water quality and water quantity, biofilm method is often impossible to continuously meet the discharge standard requirements, resulting in re-eutrophic pollution of water bodies; secondly , the method has a long process flow and takes up a lot of equipment space. In addition, this method requires the use of membrane modules to filter sewage. The membrane modules ar...

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Problems solved by technology

[0003] Due to the interactive influence of environmental conditions such as temperature, humidity and swing, residence time, operation mode, discharge water quality and water quantity, biofilm method is often impossible to continuously meet the discharge standard requirements, resulting in re-eutrophic pollution of water bodies; secondly , the process is long and the equipment takes up a lot of space

In addition, this method needs to use membrane modules to filter sewage, which is expensive and takes a long time to clean, and the cost of use is relatively high

[0004] The electrochemical method mainly relies on the discharge between the electrode plates to electrolyze the sewage. The electrolysis process requires a large current and consumes too much energy. Secondly, the electrode plates are expensive and require a high initial investment. In addition, because electrolysis requires many containers , the weight of the equipment is heavy and explosive gas will be generated during the electrolysis process, therefore, the safety requirements for equipment operation management are also very high

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