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Method for producing microalgae by utilizing industrial waste water and waste gas of biobutanol, and application of method

A bio-butanol and industrial wastewater technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problems of not comprehensively utilizing butanol waste liquid, achieve good economic benefits, prevent environmental pollution, and reduce costs low effect

Active Publication Date: 2013-05-01
GUANGDONG ZHONGKE TIANYUAN NEW ENERGY SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods do not comprehensively utilize the CO in the production process of butanol 2 and waste liquid after fermentation

Method used

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  • Method for producing microalgae by utilizing industrial waste water and waste gas of biobutanol, and application of method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1 (Chlorella zofingiensis):

[0047] (1) Pretreatment of bio-butanol industrial wastewater: A factory with an annual output of 5,000 tons of bio-butanol, which uses corn as the main raw material, produces about 225,000 tons of wastewater per year, and its original bio-butanol industrial wastewater water quality index is CODcr37550mg / L , BOD20700mg / L, PO 4 3- P250mg / L, NO 3 - N200mg / L, NH 4 + -N100mg / L, ss5000mg / L, pH4.2; the water quality indicators of wastewater after sedimentation, filtration and anaerobic treatment are CODcr7400mg / L, BOD4500mg / L, PO 4 3- P150mg / L, NO 3 - N100mg / L, NH 4 + -N50mg / L, ss300mg / L, pH6.8;

[0048] The bio-butanol industrial wastewater is separated by a solid-liquid separator to obtain solids and liquids. The solids are dried and used to produce protein feed, and the liquids are placed in a sedimentation tank. After the impurities in it are precipitated, the suspended impurities are filtered through a grid The filtrate is...

Embodiment 2

[0055] Example 2 (Spirulina platensis):

[0056] (1) Pretreatment of bio-butanol industrial wastewater: A factory with an annual output of 5,000 tons of bio-butanol, which uses corn as the main raw material, produces about 225,000 tons of wastewater per year, and its original bio-butanol industrial wastewater water quality index is CODcr37550mg / L , BOD20700mg / L, PO 4 3- P250mg / L, NO 3 - N200mg / L, NH 4 + -N100mg / L, ss5000mg / L, pH4.2; the water quality indicators of wastewater after sedimentation, filtration and anaerobic treatment are CODcr7400mg / L, BOD4500mg / L, PO 4 3- P150mg / L, NO 3 - N100mg / L, NH 4 + -N50mg / L, ss300mg / L, pH6.8;

[0057]The bio-butanol industrial wastewater is separated by a solid-liquid separator to obtain solids and liquids. The solids are dried and used to produce protein feed, and the liquids are placed in a sedimentation tank. After the impurities in it are precipitated, the suspended impurities are filtered through a grid The filtrate is pla...

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Abstract

The invention discloses a method for producing microalgae by utilizing industrial waste water and waste gas of biobutanol, and an application of the method. The method comprises the steps that waste water and waste gas treatment is combined with microalgae culture, and the industrial waste water and waste gas of biobutanol is utilized for preparing a microalgae liquid culture medium and producing the microalgae. The method makes full use of the industrial waste water and waste gas of biobutanol, and residual nutrient ingredients of biobutanol; contents of nutrient elements to be added are lower; the cost is low; the waste water and waste gas treatment is achieved while the microalgae is cultured; effective utilization of resources and zero emission of pollutants are achieved; and environmental pollution is prevented. The method for producing the microalgae by utilizing the industrial waste water and waste gas of biobutanol can be applied to industrial microalgae production; the obtained microalgae can be used for preparing high value-added products such as algin feed, astaxanthin, carotenoids or xanthophylls; and the method has a good economic benefit.

Description

technical field [0001] The invention belongs to the technical field of microalgae cultivation and utilization of industrial waste water and waste gas, and in particular relates to a method for producing microalgae from industrial waste water and waste gas of biological butanol and its application. Background technique [0002] With the increasing demand for oil in the development of the world economy, the price of oil as a strategic material and non-renewable energy continues to rise, which also drives up the price of butanol. In the face of the high cost of chemical production of butanol and the strong demand for butanol, the production of butanol by biological fermentation regains its market competitive advantage and has a very broad development prospect, which has attracted more and more attention. At present, my country's butanol fermentation production mainly uses corn and cassava as raw materials. In the process of using fresh cassava or dried cassava as raw material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/12C02F9/14B01D53/84B01D53/62C12R1/89
CPCY02A50/20Y02P20/59
Inventor 梁锏文江宏文李智斌陈柏铨唐兆兴姜新春周宏才
Owner GUANGDONG ZHONGKE TIANYUAN NEW ENERGY SCI & TECH
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