In situ air-flotation treatment system of riverway water body

Abstract

The invention relates to an in situ air-flotation treatment system of a riverway water body. The system comprises a feeding system, a push flow oxygen-increasing device, a micro-bubble generating device and a scum guiding device, wherein the feeding system comprises a feeding pipe and a material storage device used for storing a flocculating agent, and the feeding pipe is used for adding the flocculating agent to a pollution treatment zone; the push flow oxygen-increasing device is arranged in the pollution treatment zone and used for increasing the oxygen of the water body, making flows and flocculation stirring; the micro-bubble generating device is used for making the water body in the pollution treatment zone generate micro-nano bubbles; the scum guiding device is used for intercepting scum in the pollution treatment zone. Compared with a conventional land heterotopic air-flotation method, the in situ air-flotation treatment system of the riverway water body conducts in situ flocculating and air flotation treatment on pollution in the riverway water body, can obviously save floor space on the whole, can obviously save running energy consumption, and can simultaneously obviously improve the removal effect of the pollutants in the riverway water body through combination of multi-effect purification means namely flocculating, powerful aeration and micro-bubble air-flotation.

Description

technical field [0001] The invention relates to the field of river water treatment, in particular to an in-situ air flotation treatment system for river water. Background technique [0002] Air flotation is an abbreviation of air flotation machine, and it can also be used as a proper noun, that is, air flotation in water treatment, also known as flotation. The principle of the air flotation method is to form highly dispersed micro-bubbles in water, adhere to solid particles or liquid droplets containing hydrophobic groups in wastewater, and form a water-air-particle three-phase mixed system. After the particles adhere to the bubbles, an apparent density is formed. The flocs that are smaller than water float up to the water surface and form a scum layer that is scraped off. [0003] At present, in the process of river sewage treatment and purification, the air flotation method mainly installs air flotation equipment or large shallow air flotation tanks on land, and pumps the...

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Problems solved by technology

[0004] (1) Additional land occupation, especially for urban inland rivers, the land is tight and difficult to implement

[0005] (2) It is necessary to increase the waste water body additionally, which increases the energy consumption and maintenance cost of the equipment

[0006] (3) If the shallow air flotation method is used, the land occupation is relatively large, such as Q=10,000 m 3 / d, need to occupy an area of ​​80-150m 2 ; If air flotation equipment is used, the land occupation is relatively economical, but the efficiency is too low

[0007] (4) The current general-purpose land heterotopic air flotation method involves many pipelines, valves, etc., and requires energy-consuming equipment such as air pumps, and requires professional maintenance personnel to operate and maintain

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