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A sewage treatment device and method for strengthening autotrophic denitrification and simultaneous phosphorus recovery of municipal sewage

A technology for sewage treatment equipment and municipal sewage, which is applied in water/sewage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., and can solve problems such as recycling of unfavorable organic carbon sources.

Active Publication Date: 2021-11-23
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biological phosphorus removal process also requires a certain amount of organic carbon sources, so that the entire nitrogen and phosphorus removal process still requires a large amount of organic carbon sources, which is not conducive to the recycling of organic carbon sources.

Method used

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  • A sewage treatment device and method for strengthening autotrophic denitrification and simultaneous phosphorus recovery of municipal sewage
  • A sewage treatment device and method for strengthening autotrophic denitrification and simultaneous phosphorus recovery of municipal sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] use as figure 1 The shown device removes nitrogen and phosphorus from municipal sewage, and is composed of a chemical phosphorus removal area, an autotrophic biological nitrogen removal area and an air-lift self-reflux system; the chemical phosphorus removal area is equipped with a mixing area, anaerobic fermentation area and flocculation Settling area; the flocculation settling area is set above the anaerobic fermentation area; a partition is set between the flocculation settling area and the mixing area; the inside of the flocculation settling area is provided with multi-layer parallel diversion plate; the water inlet of the chemical phosphorus removal zone is set above the side wall of the mixing zone; the water outlet of the chemical phosphorus removal zone is set above the side wall of the flocculation sedimentation zone;

[0060] The autotrophic biological denitrification zone is provided with two sets of inner aerobic zones and biofilm carriers distributed betwee...

Embodiment 2

[0067] use as figure 2 The shown device removes nitrogen and phosphorus from municipal sewage, and is composed of a chemical phosphorus removal area, an autotrophic biological nitrogen removal area and a reflux pump; the chemical phosphorus removal area is equipped with a mixing area, anaerobic fermentation area and a flocculation sedimentation area The flocculation sedimentation area is set above the anaerobic fermentation area; a partition is arranged between the flocculation sedimentation area and the mixing area; honeycomb materials are arranged inside the flocculation sedimentation area; the chemical phosphorus removal The water inlet of the zone is set above the side wall of the mixing zone; the water outlet of the chemical phosphorus removal zone is set above the side wall of the flocculation sedimentation zone;

[0068] The autotrophic biological denitrification zone is provided with two sets of inner aerobic zones and biofilm carriers distributed between and outside ...

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Abstract

The invention relates to the technical field of wastewater treatment, in particular to a sewage treatment device and method for strengthening municipal sewage autotrophic denitrification and simultaneous phosphorus recovery. The sewage treatment device provided by the present invention includes a chemical phosphorus removal area and an autotrophic biological nitrogen removal area connected in sequence; the chemical phosphorus removal area includes a mixing area, a flocculation sedimentation area, and an anaerobic fermentation area; the autotrophic biological nitrogen removal area It includes an inner layer aerobic zone and a biofilm carrier distributed outside the inner layer aerobic zone; the bottom of the autotrophic biological denitrification zone is provided with a dosing device; it also includes a reflux system, the water inlet of the reflux system It communicates with the autotrophic biological denitrification zone, and the water outlet of the reflux system communicates with the mixing zone of the chemical phosphorus removal zone. The device provided by the invention is used to denitrify and dephosphorize municipal sewage, which can reduce material consumption and energy consumption, and improve efficiency of denitrification and phosphorus removal.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a sewage treatment device and method for strengthening municipal sewage autotrophic denitrification and simultaneous phosphorus recovery. Background technique [0002] Under the background of advocating waste water recycling and energy treatment, organic matter and phosphorus in waste water need to be recovered as much as possible. The remaining ammonia nitrogen has no recovery value due to low concentration and needs to be biochemically treated. Traditional heterotrophic denitrification technology is due to the recovery of organic carbon sources. Hard to be the craft of choice. In recent decades, the discovery of some new nitrogen conversion pathways and the research on the mechanism have broken people's original understanding of the nitrogen cycle in nature, which is of great significance to the development of science and wastewater denitrification treatment techno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/10C02F101/16C02F101/30
CPCC02F1/5281C02F3/02C02F3/28C02F3/30C02F3/302C02F3/305C02F3/307C02F2101/105C02F2101/16C02F2101/30
Inventor 李祥黄勇潘杨李大鹏毕贞顾晓丹
Owner SUZHOU UNIV OF SCI & TECH
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