Self-pressure-reducing type dissolved gas releaser for sewage treatment

Abstract

The invention discloses a self-pressure-reducing type dissolved gas releaser for sewage treatment. The self-pressure-reducing type dissolved gas releaser comprises an introducing chamber and an outer barrel and is characterized in that the introducing chamber is arranged around the periphery of the bottom of the outer barrel, a hollow structure is formed by the introducing chamber and the bottom of the outer barrel, and a plurality of flow guide holes communicated with the bottom of the outer barrel are formed in the introducing chamber; a gas dissolved water introducing opening is formed in one side of the introducing chamber, a rotational flow head is mounted at the bottom of the outer barrel, a plurality of flow guide blades are evenly arranged at the bottom of the rotational flow head, space allowing the gas dissolved water to flow is arranged between the rotational flow head and the flow guide holes, and a gas dissolved water outlet is formed by the upper portion of the rotational flow head and an open part of the outer barrel. The self-pressure-reducing type dissolved gas releaser is simple in structure, released gas is fine, dense, even and stable, micro bubbles and suspended solids in water are attached well, floating is easy, and the releaser is not prone to be blocked and does not need to be cleaned during work.

Description

technical field [0001] The invention relates to sewage treatment equipment, in particular to a self-decompression dissolved air releaser for sewage treatment. Background technique [0002] In recent years, many sewage treatment projects in the world generally adopt the "air flotation method" to achieve solid-liquid separation, so as to achieve the purpose of water purification. The air flotation method uses air to be introduced into the water, and the gas is dissolved into the water under a certain pressure to form dissolved air water, and then the dissolved air releaser instantaneously decompresses and dissipates energy, releasing a large number of fine bubbles less than 25um, so that the flocculated harmful Substances, oily substances, etc. adhere to its surface, and the air bubbles float the flocculated harmful substances, oily substances, etc. to the water surface during the floating process, so as to achieve the purpose of solid-liquid separation and purification of wat...

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Problems solved by technology

[0004] Due to the common problems of traditional dissolved air releasers such as complex structure, easy blockage, short service life and poor use effect, the present invention provides a simple structure, convenient installation and use, good damage rate, good use effect, no maintenance, and long service life. Air flotation dissolved air releaser

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