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Semi-open bioreactor for treating high-nitrogen-content wastewater by easy-to-settle algae and use method thereof

A bioreactor, semi-open technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of low photosynthesis efficiency, deterioration of effluent quality, and low biomass efficiency, and achieve the treatment effect. Good, small investment, easy to expand the effect

Pending Publication Date: 2020-08-18
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem of limited light penetration and CO in the lower part of the water in the existing open algae cultivation reactor. 2 Low concentration leads to low photosynthetic efficiency, collecting suspended algae biomass consumes energy and is expensive, and inefficient harvesting of biomass leads to deterioration of effluent water quality; while closed type requires continuous supply of light energy, complex structure, and high cost technical problems, and providing A semi-open bioreactor for treating high-nitrogen wastewater that is prone to sinking algae and its use method

Method used

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  • Semi-open bioreactor for treating high-nitrogen-content wastewater by easy-to-settle algae and use method thereof
  • Semi-open bioreactor for treating high-nitrogen-content wastewater by easy-to-settle algae and use method thereof

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specific Embodiment approach 1

[0028] Specific implementation mode 1: This implementation mode is a semi-open bioreactor for treating high-nitrogen wastewater that is prone to sinking algae, such as Figure 1-Figure 2 As shown, it is specifically composed of water inlet pipe 1, nozzle 2, blower 3, perforated aeration pipe 4, grille 5, nylon cloth 6, LED lighting 7, first slag retaining board 8, overflow weir 9, second dam Slag plate 10, outlet pipe 11, reactor main body 12, drain pipe 13, mud discharge pipe 14 and photometer 15;

[0029] The reactor main body 12 is a transparent box, the top of the reactor main body 12 is an open form, and the inner bottom of the reactor main body 12 is respectively provided with a water inlet pipe 1, a perforated aeration pipe 4 and a drain pipe 13, and the inlet of the perforated aeration pipe 4 The air port communicates with the air outlet of the blower 3, and the blower 3 is arranged outside the reactor main body 12; a nozzle 2 is arranged at the water outlet of the wat...

specific Embodiment approach 2

[0032] Embodiment 2: This embodiment differs from Embodiment 1 in that: the reactor main body 12 is made of transparent PC material, and the light transmittance is 12%-88%. Others are the same as the first embodiment.

specific Embodiment approach 3

[0033] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the reactor main body 12 is a cuboid with an aspect ratio of (1-2):1. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a semi-open bioreactor for treating high-nitrogen-content wastewater by easy-to-settle algae, in particular to a semi-open bioreactor for treating high-nitrogen-content wastewater by easy-to-settle algae and a use method of the semi-open bioreactor. The invention aims to solve the problems that on one hand, the light penetration of the existing open algae culture reactor is limited, the photosynthesis efficiency is low due to low CO2 concentration at the lower part of the water surface, the collection of suspended algae biomass consumes energy and is expensive, and theeffluent quality is deteriorated due to low-efficiency harvesting of biomass; on the other hand, light energy needs to be continuously provided for sealing, the structure is complex, and the manufacturing cost is high. According to the invention, the easy-settling algae are placed in the transparent reactor, the semi-open photobioreactor is formed by utilizing sunlight and air and being assistedby aeration and illumination, the semi-open photobioreactor is applied to secondary treatment or tertiary treatment of high-nitrogen-content sewage for effective denitrification, the energy consumption can be greatly reduced, the efficiency is improved, and the easy-settling algae can be recycled or the additional value is generated. The method is applied to the field of water treatment.

Description

technical field [0001] The invention relates to a bioreactor for treating high-nitrogen wastewater and a method for using the same. Background technique [0002] The management of the nitrogen (N) cycle has been identified by the National Academy of Engineering as one of the grand challenges of the 21st century. The main source of nitrogen is high ammonium (NH 4 + ) intensity wastewater, such as industrial wastewater (food processing, fertilizer, plastic industry), landfill leachate, separated urine sources and concentrates from anaerobic digestion). These wastewaters are challenging and expensive to treat. High concentration of NH 4 + It is often recycled into the wastewater treatment system of the sewage treatment plant, resulting in irregularly high nutrient loading, which disrupts the mainstream process of biological nitrogen removal (BNR) and increases costs. [0003] For algae, industrial wastewater with high nitrogen content is a good medium for its growth, prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F101/16
CPCC02F3/322C02F2201/002C02F2101/16C02F2101/163
Inventor 罗旭彪曹莹邵鹏辉杨利明石慧喻恺
Owner NANCHANG HANGKONG UNIVERSITY