Chlorella vulgaris used for combined treatment of wastewater and waste gas while synchronously realizing solid carbon denitrification

A combined treatment and chlorella technology, applied in gas treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as high operating costs, limited denitrification efficiency, secondary pollution, etc., and achieve anti- Strong pollution effect

Active Publication Date: 2017-02-15
LIAONING DONGKE ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the traditional chemical denitrification method is applied to ultra-low emissions, not only the denitrification efficiency is limited, but also the operating cost is high, and it is easy to cause secondary pollution.

Method used

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  • Chlorella vulgaris used for combined treatment of wastewater and waste gas while synchronously realizing solid carbon denitrification
  • Chlorella vulgaris used for combined treatment of wastewater and waste gas while synchronously realizing solid carbon denitrification
  • Chlorella vulgaris used for combined treatment of wastewater and waste gas while synchronously realizing solid carbon denitrification

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Experimental program
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Effect test

Embodiment 1

[0026] Chlorella vulgaris (Chlorella vulgaris) DH2 was inoculated into untreated soil with a pH of 8.0, a COD (Chemical Oxygen Demand) content of 310 mg / L, a total nitrogen TN content of 33 mg / L, and a total phosphorus TP content of 3.6 mg / L. In the sterilized municipal sewage, the initial inoculation amount is 5×105 / ml, under the irradiation of artificial light source, the algae can use the nutrients in the sewage to grow, the culture conditions are: light intensity 3000lux, aeration components: 5% CO2, 75ppmNO , N2 balance, aeration rate 0.1vvm, temperature 25 ℃. After the reactor was operated for one day, the average concentration of gas components at the outlet of the reactor was stable at 2.5% CO2, 35ppmNO (nitrogen balance), and after 5 days of cultivation, the density of Chlorella DH2 could reach 2.0g / L. The microalgae are collected by centrifugation, and the treated water is discharged. The removal rates of COD, TN, and TP in the treated sewage are 50.0%, 65%, and 99....

Embodiment 2

[0028] Chlorella vulgaris (Chlorella vulgaris) DH2 was inoculated into untreated soil with a pH of 8.0, a COD (Chemical Oxygen Demand) content of 310 mg / L, a total nitrogen TN content of 33 mg / L, and a total phosphorus TP content of 3.6 mg / L. In the sterilized municipal sewage, the initial inoculation amount is 5×105 / ml, under the irradiation of artificial light source, the algae grow using the nutrients in the sewage, the culture conditions are: light intensity 3000lux, aeration components: 15% CO2, 50ppmNO , N2 balance, aeration rate 0.1vvm, temperature 25 ℃. After the reactor was operated for one day, the average concentration of gas components at the outlet of the reactor was stable at 13% CO2, 19.8ppmNO (nitrogen balance), and after 5 days of cultivation, the density of Chlorella DH2 could reach 2.8g / L. The microalgae are collected by centrifugation, and the treated water is discharged. The removal rates of COD, total nitrogen TN, and total phosphorus TP in the treated s...

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Abstract

The invention relates to the field of wastewater and waste gas pollution control and microalgae biodiesel production, and particularly relates to chlorella vulgaris used for combined treatment of wastewater and waste gas while synchronously realizing solid carbon denitrification, in particular to chlorella vulgaris DH2 used for treating municipal sewage and thermal power plant flue gas while synchronously realizing grease accumulation. An algae species is provided for using microalgae technology for wastewater and waste gas treatment while coproducing biodiesel. Chlorella vulgaris is named as DH2, collected at the China General Microbiological Culture Collection Center (CGMCC) on 28th, Sep. 2016 and registered under the number of CGMCC13056. Chlorella vulgaris has high anti-pollution capability, can grow, propagate and accumulate grease in actual sewage, can effectively remove pollutants like nitrogen and phosphorus in high-nitrogen-content municipal sewage and can realize wastewater and waste gas resource transformation.

Description

technical field [0001] The invention relates to the fields of waste water, waste gas pollution control and microalgae biodiesel production, in particular to a chlorella strain used for combined treatment of waste water and waste gas to simultaneously realize carbon fixation and denitrification. It specifically relates to a strain of Chlorella vulgaris DH2 used to treat municipal sewage and flue gas of thermal power plants and simultaneously achieve oil accumulation. It is intended to provide functional algae species for the process of using microalgae technology in waste water treatment and co-production of biodiesel. Background technique [0002] In the existing energy system, coal accounts for about 3 / 4 of the total energy demand. Among coal consumption, coal consumption for thermal power generation in my country accounts for about 60%. Coal combustion produces a large amount of CO2 (content is about 15%), and also produces SO2 (100-300mg / m3), CO, suspended particulate ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/12B01D53/84B01D53/62B01D53/56C02F3/32C12R1/89
CPCB01D53/56B01D53/62B01D53/84B01D2258/0283C02F3/322C12N1/125C12R2001/89Y02P20/59Y02A50/20
Inventor 于丽新魏长宏邵枫王英荟齐笑言李响刘建民张戟马珊珊于艳玲
Owner LIAONING DONGKE ELECTRIC POWER
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