Strengthened biological water treatment denitrification reaction device

Abstract

The invention discloses a strengthened biological water treatment denitrification reaction device. The lower end of the reaction device is provided with an inlet water distributor, the upper end of the reaction device is provided with a sludge settling area, and the lower end of the sludge settling area is provided with a sludge backflow seam; a downflow weir is arranged between the reaction device and the sludge settling area. According to the strengthened biological water treatment denitrification reaction device, the denitrification reaction efficiency is high, and the mud-water separation effect is good; the settling area is constructed at the upper part of a reaction region, the structure is compact, a secondary sedimentation tank and a sludge backflow facility are saved, the size of a constructed structure is reduced, and damage of a reflux pump to granule sludge is avoided; reaction sewage continuously flows up at a certain speed in a device, and in the up-flowing process, the sewage makes full contact with the granule sludge to strengthen a mass transfer process; a dead zone does not exist in the reaction device, the fluidifying property of the sludge is good, and the runnability is stable; the reaction device has very good biological denitrification performance.

Description

technical field [0001] The invention belongs to the technical field of biological denitrification reaction equipment, and in particular relates to a denitrification reaction device for enhanced biological water treatment. Background technique [0002] Nitrogen pollution, environmental pollution caused by nitrogen compounds. The atmosphere is mainly composed of nitrogen and nitrogen oxides. The latter is the main pollutant that directly or indirectly causes air pollution. Nitrogen dioxide is highly irritating and more toxic than sulfur dioxide. They are mainly produced by burning fossil fuels in industry and life. When there are gaseous organic substances such as olefins (such as automobile exhaust) and nitrogen oxides coexist in the atmosphere, photochemical reactions will occur when exposed to sunlight, which will cause photochemical smog pollution. Nitrogen dioxide in the atmosphere reacts with rainwater to generate nitric acid or nitrate, forming acid rain, or depositing...

AI Technical Summary

Problems solved by technology

This kind of operation not only increases equipment and consumes power, but also collects mixed nitrification and denitrification bacteria, which is not conducive to the formation of biological flora with obligate treatment effect

In addition, it is not conducive to the formation of granular sludge with excellent sedimentation performance, resulting in low reactor utilization and poor denitrification effect

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