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Method and device for low-carbon emission energy regeneration by coupling waste gas and waste water

An energy and wastewater technology, applied in the field of energy, can solve the problems of high cost of microalgae oil, low carbon recovery rate, low fixation rate, etc., and achieve the effect of reducing CO2 emissions, high impact load resistance, and promoting growth.

Inactive Publication Date: 2012-12-12
HARBIN INST OF TECH
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Problems solved by technology

[0008] The present invention aims to solve the problem of low carbon recovery rate and CO 2 The problem of low fixation rate and high cost of microalgae oil provides a method and device for energy conversion of waste gas and waste water coupled with low carbon emissions

Method used

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  • Method and device for low-carbon emission energy regeneration by coupling waste gas and waste water
  • Method and device for low-carbon emission energy regeneration by coupling waste gas and waste water
  • Method and device for low-carbon emission energy regeneration by coupling waste gas and waste water

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specific Embodiment approach 1

[0024] Specific implementation mode 1: In this implementation mode, a method for coupling waste gas and waste water to low-carbon emission energy is realized according to the following steps:

[0025] 1. Take the waste water after the primary treatment of the sewage treatment plant for sterilization pretreatment, and then import it into the reactor, and inoculate the microalgae in the waste water in the reactor with a volume ratio of 10%~50%. liquid;

[0026] 2. Pass the exhaust gas into the mixed solution to cultivate microalgae, and at the same time discharge and collect the residual gas in the process of cultivating microalgae in the reactor;

[0027] 3. Mix the residual gas collected in step 2 with the intake air and re-introduce it into the mixed solution in the reactor. When the microalgae are cultivated to OD 658 The value is basically stable, that is, after entering the stable period, the mixed solution is discharged, and the microalgae in the mixed solution are colle...

specific Embodiment approach 2

[0032] Embodiment 2: This embodiment differs from Embodiment 1 in that the waste water described in step 1 is domestic sewage, beer waste water, molasses waste water or industrial waste water. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0033] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the sterilization treatment described in step one is high-pressure steam sterilization, calcium hypochlorite sterilization, Cl 2 Sterilization, chlorine dioxide sterilization, ozone sterilization or ultraviolet sterilization. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a method and a device for energy regeneration, in particular to a method and a device for low-carbon emission energy regeneration by coupling waste gas and waste water, aiming at solving the problems of low carbon recovery rate, low CO2 fixing rate and high microalgae lipid cost in the waste water treatment process. The method comprises the steps of: (1) carrying out high-pressure steam sterilization pretreatment on the waste water treated by primary treatment, then introducing the treated waste water into a reactor, and inoculating microalgae nutrient solution; (2) filling the waste gas into the reactor, and culturing microalgae; and (3) collecting the cultured microalgae, dehydrating the microalgae until constant weight, extracting the lipid of the microalgae, and completing the low-carbon emission energy regeneration by coupling the waste gas and the waste water. The device for the low-carbon emission energy regeneration by coupling the waste gas and the waste water comprises a main body, a liquid inlet pipe, a liquid outlet pipe, a cover, an air inlet pipe, an air distribution device, an air outlet pipe and a heat sensor. The invention is applied to the field of low-carbon emission energy regeneration by coupling the waste gas and the waste water.

Description

technical field [0001] The invention relates to an energy conversion method and device. Background technique [0002] Fossil energy shortage, water crisis and greenhouse effect have become difficult problems hindering the development of human society. Renewable and environmentally friendly alternative energy sources are increasingly attracting people's attention. my country's energy shortage is even more serious. At the same time, the burning of a large amount of fossil fuels has led to the intensification of the greenhouse effect. my country's solution to energy shortages and CO 2 The form with large emissions is more severe. [0003] The energy conversion process of sewage can recycle organic matter in sewage, including sewage fermentation technology to produce hydrogen and methane, microbial fuel cell (MFC) technology and microalgae biodiesel technology. [0004] There are two main types of sewage fermentation energy conversion technology, one is to produce hydrogen by ...

Claims

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Application Information

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IPC IPC(8): C02F9/14B01D53/84C11B1/00C10L1/02C12N1/12C12M1/04C12R1/89
CPCC12M23/08C12M21/02C12M23/38C12M29/06C12M41/06C12M41/12C12M41/36
Inventor 冯玉杰初晓婉李超于艳玲张大伟仪超
Owner HARBIN INST OF TECH
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