A biological denitrification device for wastewater

By introducing a pretreatment tank, filter screen, cleaning components, and stirring components into the wastewater biological denitrification device, the problem of suspended solids clogging is solved, oxygen transfer and reaction efficiency are improved, and efficient wastewater denitrification treatment is achieved.

CN224450428UActive Publication Date: 2026-07-03JIANGSU WATERWOOD ENVIRONMENT TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU WATERWOOD ENVIRONMENT TECH CO LTD
Filing Date
2025-07-16
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing biological denitrification devices for wastewater lack pretreatment mechanisms, which leads to suspended solids and impurities clogging aeration heads or aeration pipes, reducing oxygen transfer efficiency, covering the surface of biological packing materials, hindering oxygen and substrate transfer, and reducing degradation efficiency.

Method used

A wastewater biological denitrification device was designed, comprising a pretreatment tank and a treatment tank. It is equipped with a filter screen, a cleaning component, an agitator shaft, and a stirring component. The filter screen removes impurities, the cleaning component cleans the filter screen, the agitator shaft prevents sludge sedimentation, the stirring component enhances the mixing reaction effect, and the pull-out packing cage facilitates the replacement of the packing material.

Benefits of technology

It effectively removes impurities from wastewater, prevents clogging, improves oxygen transfer and reaction efficiency, facilitates packing replacement, and enhances denitrification.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a biological denitrification device for wastewater, including a pretreatment tank and a treatment tank. A first water pump is installed on the treatment tank. A pumping pipe connects the inlet of the first water pump to the pretreatment tank, and an outlet pipe connects the outlet of the first water pump to the treatment tank. The pretreatment tank contains a filter screen and a cleaning assembly for cleaning the filter screen. The cleaning assembly includes a second water pump, a diversion pipe, a spray pipe, and a cleaning brush. The second water pump is located on the pretreatment tank, the diversion pipe is located at the outlet of the second water pump, and the spray pipe is located on the diversion pipe and extends into the pretreatment tank. The spray pipe is positioned above the filter screen, and several groups of spray pipes are evenly spaced. Each spray pipe has a nozzle. This utility model relates to the field of wastewater treatment technology, specifically providing a biological denitrification device for wastewater pretreatment.
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