Method and device for sewage treatment by using sequencing batch activated sludge reactor

Abstract

The invention discloses a method and device for sewage treatment by utilizing a sequencing batch activated sludge reactor. The method comprises the following steps: suspending a proper amount of an iron-carbon filler in the sequencing batch activated sludge reactor, and treating by adopting a mode of feeding water from the bottom of the reactor and discharging water from the top of the reactor. The device structurally comprises a filter tank, a water inlet formed in the lowermost end of the filter tank, a plurality of sampling openings formed in the tank wall of the filter tank and an iron-carbon filler, wherein an aeration head is arranged in the filter tank between the water inlet and the sampling opening in the lowermost end, an aeration pipe is connected to the aeration head, and the other end of the aeration pipe penetrates out of the tank wall of the filter tank and then is connected with an air pump. The iron-carbon filler promotes phosphorus removal through the effects of adsorption, chemical precipitation, coprecipitation and the like; the SBR operation is simple, the operation mode is flexible, the selection pressure can be effectively controlled to discharge flocculent sludge with poor settling performance, sludge aggregates with good settling performance are reserved, and the sludge settling performance is improved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method and device for sewage treatment using a sequencing batch type activated sludge reactor. Background technique [0002] Iron-carbon micro-electrolysis technology is currently an ideal process for treating high-concentration organic wastewater, also known as internal electrolysis. Because the iron shavings used can be obtained from industrial scrap iron scraps, it is often dubbed the name of "treating waste with waste". The basic principle is to use the iron and carbon contained in the iron shavings to form a micro-primary battery. The free hydrogen [H] and O∙ generated during this process have strong chemical activity and can destroy the carbon chains of many organic pollutants, thereby Reduce refractory organic matter to easily degradable organic matter. The galvanic reaction produces a large amount of Fe 2+ and Fe 3+ , under the condition that th...

AI Technical Summary

Problems solved by technology

But in recent years, with the continuous improvement of sewage treatment discharge standards, nitrogen and phosphorus discharge is difficult to meet the requirements

Moreover, the sludge in SBR is flocculent, and the settling effect is poor, which prolongs the settling time and leads to a decrease in sewage treatment efficiency.

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