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Method for treatment of starch wastewater and synchronous energy production by coculture of bacteria and microalgaes

A technology for treating starch and starch wastewater, applied in chemical instruments and methods, food industry wastewater treatment, biological water/sewage treatment, etc., can solve the problems of reduced hydrogen production, reduce pollution, reduce costs, and improve wastewater treatment efficiency Effect

Inactive Publication Date: 2015-07-22
HARBIN INST OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problem that a large amount of volatile organic acids will be produced in the existing dark fermentation hydrogen production process, thereby resulting in a decrease in hydrogen production, and provides a method for synchronous production of starch wastewater by co-cultivation of bacteria and microalgae

Method used

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  • Method for treatment of starch wastewater and synchronous energy production by coculture of bacteria and microalgaes
  • Method for treatment of starch wastewater and synchronous energy production by coculture of bacteria and microalgaes
  • Method for treatment of starch wastewater and synchronous energy production by coculture of bacteria and microalgaes

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specific Embodiment approach 1

[0012] Specific Embodiment 1: In this embodiment, a method for co-cultivating bacteria and microalgae to treat starch wastewater with synchronous production capacity includes the following steps: 1. Take starch wastewater, adjust the pH, and then place it in a closed reactor; 2. Produce hydrogen The inoculum is pretreated to obtain mixture A; 3. Mix mixture A with microalgae, and then inoculate the starch wastewater in a closed reactor with an inoculation amount of 5-10% of the total volume of starch wastewater, and then react The device is placed in a shaker, and the shaking culture is completed. The mixture A contains hydrogen-producing bacterial flora, wherein the hydrogen-producing bacterial flora is mainly Clostridium flora.

[0013] The process flow diagram of this embodiment is as follows figure 1 shown.

[0014] In this embodiment, the raw material of the present invention is waste water or waste, which is beneficial to reduce the cost of production capacity and avoi...

specific Embodiment approach 2

[0015] Specific embodiment two: what this embodiment is different from specific embodiment one is: the starch waste water described in step one is sweet potato starch waste water, tapioca starch waste water, mung bean starch waste water, potato starch waste water, wheat starch waste water, water chestnut starch waste water A mixture of one or more of lotus root starch wastewater and corn starch wastewater in any ratio. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0016] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the pH adjustment described in step 1 is regulated by HCl solution with a concentration of 1 mol / L or NaOH solution with a concentration of 1 mol / L. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a method for treatment of starch wastewater and synchronous energy production by coculture of bacteria and microalgaes and relates to the method for treatment of the starch wastewater and synchronous energy production by coculture of the bacteria and the microalgaes. The invention aims at solving the problem that the hydrogen production is reduced because a large amount of volatile organic acids are produced in the existing dark fermentation hydrogen production process and the method comprises the following steps: 1) taking the starch wastewater, regulating the pH and putting the wastewater into a closed reactor; 2) performing pretreatment on a hydrogen production inoculation matter to obtain a mixture containing hydrogen production bacteria; and 3) mixing the mixture containing the hydrogen production bacteria with the microalgaes, inoculating into the starch wastewater, further putting into a shaking table and performing shaking culture to complete the process. According to the method provided by the invention, the wastewater is used for fermentation and energy production, so that the wastewater is effectively treated, the environmental pollution is reduced, and a method for synchronous preparation of clean energy is provided. According to the method provided by the invention, the energy production is improved by more than 95%, and the sewage treatment efficiency is improved by more than 170%. The method provided by the invention is applied to the field of bio-energy and sewage treatment.

Description

technical field [0001] The invention relates to a method for synchronous production of starch wastewater through co-cultivation of bacteria and microalgae. Background technique [0002] The increasing depletion of non-renewable energy sources and the resulting environmental pollution have seriously threatened the survival and sustainable development of human beings. Therefore, there is an urgent need to develop clean and renewable energy sources. Among various renewable energy sources, hydrogen energy is considered to be an ideal clean energy source. Hydrogen has the advantages of high energy density, high heat conversion efficiency, high thermal conductivity, and various application forms. More importantly, the product of hydrogen combustion is water and does not emit greenhouse gases. [0003] At present, conventional hydrogen production methods are extracted from fossil fuels such as petroleum, coal, and natural gas, or produced by electrolysis of water. These methods c...

Claims

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Application Information

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IPC IPC(8): C12P3/00C12P7/64C02F3/32C02F3/34C02F103/32
Inventor 任南琪任宏宇刘冰峰孔凡英赵磊
Owner HARBIN INST OF TECH
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