Self-discharging cylinder micro/nano-grade sieve air-flotation system for sewage treatment

Abstract

The invention relates to a self-discharging cylinder micro / nano-grade sieve air-flotation system for sewage treatment. The system is provided with a vertical air-flotation cylinder for the sewage treatment; a desilting and filtering sloping plate is arranged at the bottom of the air-flotation cylinder which contains the sewage; a rotary-cutting releaser which generates a micro / nano-grade air-flotation filter sieve is arranged over the sloping plate; a loop of sewage-distributing pipes is arranged over the rotary-cutting releaser and the sewage-distributing pipes are communicated with a sewage-flocculating barrel; clean water which is filtered by the desilting and filtering sloping plate is conveyed to an impeller-symmetrical air-water mixing all-in-one machine which is arranged outside the air-flotation cylinder by a water-inlet pipe; micro / nano-grade bubble groups form a filter sieve consisting of microbubbles in the continuously ascending process; the filter sieve encloses and captures suspended particles in the sewage in the bubble groups so as to carry the suspended particles up to the water surface; the air-flotation efficiency is greatly increased so that equipment becomes miniaturized, which is particularly applied to the refreshing treatment of the sewage of 1-50 cubic meters in one hour; and in a similar way, the small equipment can be applied to a high-oxygen milk bath machine so that micro / nano-grade bubble bath can be realized at home, and the medium-sized equipment can be used for high-efficiency air cascade at water bottom.

Description

technical field [0001] The invention relates to a process method for sewage treatment, in particular to an automatic slag discharge cylinder type micro-nano sieve sewage treatment air flotation system. Background technique: [0002] When a large number of air bubbles are combined with the suspended flocs in the sewage, they must float to the water surface. At present, the conventional pool-type air flotation method used in large quantities has large bubbles, low efficiency, and low efficiency when treating suspended flocs in sewage. The slag scraper needs to be used to scrape the slag, and the occupied area is large. Invention content: [0003] The applicant disclosed "a rotary cutting type releaser" in Chinese patent ZL 200820080920.9. The applicant also has an invention patent application with the name: sewage cleaning method and equipment, application number: 200810058619.2; in the above two patent technologies On the basis of the above, the present invention proposes ...

AI Technical Summary

Problems solved by technology

[0002] When a large number of air bubbles are combined with the suspended flocs in the sewage, they must float to the water surface. At present, the conventional pool-type air flotation method used in large quantities has large bubbles, low efficiency, and low efficiency when treating suspended flocs in sewage. Need to use a slag scraper to scrape the slag, occupy a large area, etc.

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