Sewage treatment method and device thereof

Abstract

The invention relates to a sewage treatment method and a device thereof. The sewage treatment method is characterized in that the method comprises the following steps that: 1) the electric flocculation and the ozone catalytic oxidation are synchronously performed, and a flocculating agent produced by the electric flocculation and a small amount of activated carbon inside an electric flocculation vessel are a catalyst for ozone oxidation; and 2) water to be treated enters a treatment vessel body through an inlet of the treatment vessel body, is subjected to electric flocculation and ozone catalytic oxidation, is adsorbed by the activated carbon and then is drained from an outlet of the treatment vessel body. The sewage treatment device for realizing the method comprises the electric flocculation vessel body, an adsorption filtration vessel body, adsorption medium and an electrode plate, and is characterized in that the electric flocculation and the ozone catalytic oxidation are synchronously performed, COD in sewage is obviously reduced through the electric flocculation and the ozone catalytic oxidation after the sewage enters from a water inlet pipe, and then the sewage is adsorbed by the activated carbon further so as to realize high removal rate of the COD. The method and the device have good treatment effect and broad application range; and under same treatment conditions, the device is small and has less floor space.

Description

technical field [0001] The invention relates to a sewage treatment method and a device thereof. Background technique [0002] The current treatment method is to use ozone alone, the cost is high, and the increase of bio-assimilable organic carbon in water will lead to the deterioration of the biological stability of water; the use of biological activated carbon alone shortens the saturation period of adsorption and requires frequent regeneration, resulting in high cost ; The traditional flocculation occupies a large area, needs to add flocculant, produces a large amount of sludge, and is not easy to realize automatic control; the current treatment method has the following shortcomings: large equipment (large volume), large area, and low processing capacity. Contents of the invention [0003] An object of the present invention is to provide a processing method with high processing capacity and an apparatus thereof. [0004] In order to achieve the above object, the technic...

AI Technical Summary

Problems solved by technology

[0002] The current treatment method is to use ozone alone, the cost is high, and the increase of bio-assimilable organic carbon in water will lead to the deterioration of the biological stability of water; the use of biological activated carbon alone shortens the saturation period of adsorption and requires frequent regeneration, resulting in high cost ;Traditional flocculation occupies a large area, and flocculants must be added, which produces a large amount of sludge and is not easy to realize automatic control; the current treatment method has the following shortcomings: large equipment (large volume), large footprint, low processing capacity, etc.

Images