Fungus and algae rotary bio-membrane reactor system based on denitrification and phosphorus removal and application

A biofilm system and rotating biological technology, applied in sustainable biological treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problems of large excess sludge production, low nitrogen and phosphorus removal efficiency, and large emissions. , to achieve the effect of reducing aeration energy consumption, maximizing benefits and reducing emissions

Active Publication Date: 2018-06-15
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies in the traditional activated sludge treatment of wastewater and microalgae harvesting, the present invention proposes a biofilm reactor system based on phosphorus and denitrification bacteria and algae rotary biofilm reactor system and its application. Harvesting microalgae can also improve the sewage treatment effect and reduce aeration energy consumption and CO2 in the treatment process. 2 At the same time, partly reduce the output of excess sludge, realize the purpose of resource utilization of sewage, and solve the problem of low nitrogen and phosphorus removal efficiency, high energy consumption and CO 2 Large amount of discharge, large excess sludge output, difficult to deal with, etc., and the harvested microalgae can be used as microalgae fertilizer to improve economic and social benefits

Method used

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  • Fungus and algae rotary bio-membrane reactor system based on denitrification and phosphorus removal and application
  • Fungus and algae rotary bio-membrane reactor system based on denitrification and phosphorus removal and application
  • Fungus and algae rotary bio-membrane reactor system based on denitrification and phosphorus removal and application

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Experimental program
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Effect test

Embodiment 1

[0047] A biofilm reactor system based on phosphorus and nitrogen removal and its application described in this embodiment mainly includes two parts: an activated sludge system and a conveyor-type rotary algae biofilm system.

[0048] The main body of the activated sludge system is an aeration tank (1), which also includes activated sludge (2) and a blower (3). The aeration main pipe (5) and the aeration branch pipe (4) are located at the bottom of the aeration tank.

[0049] Conveyor belt rotating algae biofilm system includes rotating shaft (7), conveyor belt algae film (12), conveyor belt supporting steel frame (6), conveyor belt scraper (9), conveyor belt motor (11), power conveyor belt (8) and conveyor belt microalgae collection Slot (10).

[0050] The process steps for the application are

[0051] Step 1: Cultivation of Microalgae

[0052] The well-growing microalgae were transferred to the microalgae medium for culture, and cultured in a light shaker with a light inten...

Embodiment 2

[0062] The removal effect of phosphorus in wastewater

[0063] Activate the well-growing chlorella from the slant of the test tube into the BG-11 culture medium, and cultivate it in a light shaker with a rotation speed of 120 rpm, a temperature of 28°C, and a light intensity of 4000 Lux for 7 days to obtain the optical density value Algae liquid with a higher cell density of 0.8, soak the adherent material in the algae liquid and cultivate it under light conditions for 24 hours to make the microalgae cells adhere to the adherent material, obtain municipal wastewater and Activated sludge, transfer municipal wastewater to the aeration tank (1) of the activated sludge system, add the activated sludge at the same time, turn on the blower (3) and set the aeration rate to 250 ml / min, and transfer the conveyor-type rotary algae The biofilm system is combined with the aeration system, so that the lower end of the algae biofilm system is immersed in the wastewater in the aeration tank,...

Embodiment 3

[0065] In this embodiment, a bacterial and algae rotating biofilm reactor system based on phosphorus and nitrogen removal includes two parts: an activated sludge system and a drum type rotating algae biofilm system.

[0066] The main body of the activated sludge system is an aeration tank (1), which also includes activated sludge (2) and a blower (3). The aeration main pipe (5) and the aeration branch pipe (4) are located at the bottom of the aeration tank.

[0067] The drum type rotary algae biofilm system includes a drum algae film (14), a stirring blade (15), a drum scraper (16), a drum microalgae collection tank (17), a drum supporting steel frame (18), a drum motor (19), Membrane strut (13) and shaft (20).

[0068] The applied process steps are

[0069] Step 1: Cultivation of Microalgae

[0070] The well-growing microalgae were transferred to the microalgae medium for culture, and cultured in a light shaker with a light intensity of 4000Lux, a temperature of 28°C, and a...

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Abstract

The invention discloses a fungus and algae rotary bio-membrane reactor system based on denitrification and phosphorus removal and application. Algae cells adhered to an adherent wall are fixed on a rotatable device, and rotate in waste water rich in nutrient substances and air rich in CO2, and when a microalgae membrane grows to a certain thickness, the microalgae membrane is harvested through a scraper to serve as a microalgae fertilizer, so that the microalgae harvesting cost can be reduced, and the economic benefit is improved. The rotary bio-membrane reactor system mainly comprises an active sludge system and a rotary algae bio-membrane system; on the basis of a traditional active sludge technology, a microalgae waste water treatment system is integrated, the nutrients such as COD, N and P inside waste water are removed efficiently, simultaneously the growth of microalgae can be promoted through CO2 generated by microbial metabolism inside active sludge, microalgae photosynthesis is used for providing O2 for microorganisms and partially reducing aeration cost, and the quantity of excess active sludge can be partially reduced due to the existence of microalgae.

Description

technical field [0001] The invention relates to a bacterial and algae rotating biofilm reactor system based on phosphorus and nitrogen removal and its application, specifically belonging to the technical field of wastewater treatment. Background technique [0002] The traditional activated sludge method is purely for the purpose of purifying water quality. In the process of wastewater treatment, long-term blasting, mechanical aeration or combined aeration are required to provide oxygen to microorganisms in wastewater to degrade nutrients. [0003] This process consumes a large amount of electric energy, which is a method of "energy consumption by energy consumption". In the process of microbial degradation of organic waste in activated sludge, CO produced by microbial respiration will also be released. 2 Emissions enter the air, exacerbating the greenhouse effect. In addition, the amount of residual sludge in the standard activated sludge wastewater treatment process is ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F3/32
CPCC02F3/12C02F3/322Y02W10/10
Inventor 周文广吴代赦韩佩
Owner NANCHANG UNIV
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