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Reaction system for removal of nitrogen and phosphorus in domestic sewage by use of microalgae

A technology of domestic sewage and reaction system, applied in biological water/sewage treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of unsatisfactory separation effect, poor operation stability, sludge loss, etc. To achieve the effect of ensuring disinfection effect, stable operation and low operating cost

Inactive Publication Date: 2017-04-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the activated sludge process is that the operation stability is poor, sludge bulking and sludge loss are prone to occur, and the separation effect is not ideal
At the same time, it is common in sewage in the process of ordinary wastewater biological treatment. Microorganisms remove carbon and absorb phosphorus to synthesize cell matter and ATP, etc., but only about 19% of phosphorus in sewage is removed, and the phosphorus remaining in the effluent is still quite high

Method used

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  • Reaction system for removal of nitrogen and phosphorus in domestic sewage by use of microalgae

Examples

Experimental program
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Effect test

Embodiment 1

[0019] A reaction system for removing nitrogen and phosphorus in domestic sewage by microalgae, which consists of: a high-efficiency algae pond 1, the high-efficiency algae pond is connected to one end of a grid pool 3 through a sewage pipeline 2, and the grid pool is connected to the grid pool through a sewage pipeline The sump 4 is connected, the sump is connected with one end of the primary sedimentation tank 5 through a sewage pipeline, the primary sedimentation tank is connected with one end of the biochemical pool 6 through a sewage pipeline, and the other end of the biochemical pool is connected with the secondary sedimentation tank through a sewage pipeline. The settling tank 7 is connected, the secondary settling tank is connected with the MBR membrane pool 8 through the sewage pipeline, the MBR membrane pool is connected with the disinfection tank 9 through the sewage pipeline, and the described disinfection tank is connected with the drainage well 10 through the sewag...

Embodiment 2

[0021] According to the nitrogen and phosphorus reaction system for removing domestic sewage by microalgae described in Example 1, the high-efficiency algae pond and the secondary sedimentation tank are connected to the sludge return pipeline 11, and the sludge return pipeline is connected to the sludge discharge tank 12 connections.

Embodiment 3

[0023] According to the microalgae removal nitrogen and phosphorus reaction system in domestic sewage described in embodiment 1 or 2, the biochemical pool is connected with the aeration fan 13, and the sewage pipelines at both ends of the biochemical pool are connected with chemical pipelines, and the The medicament pipelines are respectively connected with the phosphorus removal agent medicine box 14 and the ammonia nitrogen removal agent medicine box 15, and the described disinfection pool is connected with the chlorine dioxide generator 16 through the medicament pipeline.

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Abstract

A reaction system for removal of nitrogen and phosphorus in domestic sewage by use of microalgae is disclosed, the domestic sewage contains many organic pollutants, detergents, pathogenic microorganism and parasitic ovum, and the domestic sewage is a main part of urban sewage. The reaction system for removal of the nitrogen and phosphorus in the domestic sewage by use of the microalgae comprises a high rate algal pond (1), the high rate algal pond (1) is connected with one end of a grille tank (3) through a sewage pipeline (2), a water collection tank (4) is connected with the grille tank (3) through a sewage pipeline, the water collection tank (4) is connected with one end of a primary settling tank (5) through a sewage pipeline, the primary settling tank (5) is connected with one end of a biochemical pool (6) through a sewage pipeline, the other end of the biochemical pool is connected with a secondary settling tank (7) by a sewage pipeline, the secondary settling tank (7) is connected with a MBR membrane pool (8) through a sewage pipeline, the MBR membrane pool (8) is connected with a disinfection pool (9) through a sewage pipeline, and the disinfection pool (9) is connected with a drainage well (10) through a sewage pipeline. The reaction system is applied to sewage treatment.

Description

[0001] Technical field: [0002] The invention relates to a microalgae reaction system for removing nitrogen and phosphorus in domestic sewage. [0003] Background technique: [0004] It is composed of domestic sewage, industrial wastewater and precipitation, and is discharged into the urban sewage system. Domestic sewage contains more organic pollutants, detergents, pathogenic microorganisms and parasite eggs. Domestic sewage is the main component of urban sewage. Under normal conditions, urban sewage has the same characteristics of domestic sewage. The composition of industrial wastewater is very complex, and the water quality varies greatly. Industrial wastewater containing heavy metals or other toxic and harmful substances must be pretreated before being discharged into the municipal sewer. The composition of rainwater and melted ice and snow water is complex and varies greatly. Surface source pollutants. The disadvantage of the activated sludge process is that the operat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16
CPCC02F1/001C02F1/76C02F3/1263C02F3/322C02F9/00C02F2101/105C02F2101/16C02F2303/04
Inventor 谢鹏彭晶陈川王艺陈以頔任南琪
Owner HARBIN INST OF TECH
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