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Method of cultivating chlorella by using brewery industry wastewater

A technology for brewing wastewater and industrial wastewater, applied in the direction of unicellular algae, can solve the problems of large aeration power consumption, waste of resources, sludge and other problems, and achieve the effect of high economic and social comprehensive benefits and low cost.

Inactive Publication Date: 2016-01-06
都宝君
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AI Technical Summary

Problems solved by technology

The chemical oxygen demand (COD) and BOD in beer wastewater are as high as 1000mg / L and the BOD:COD value is generally above 0.15, which has good biodegradability. Currently, the commonly used sewage treatment methods are activated sludge method and its improved form and biological Contact oxidation method, but the traditional activated sludge method consumes a lot of aeration power, and the cost of unit wastewater treatment is high. At the same time, it is prone to sludge bulking and a large amount of sludge, which makes it unbearable for many users in terms of economy and management. The content of nitrogen and phosphorus is still very high, and a large amount of discharge will easily cause eutrophication of the water body, and it is also a waste of resources

Method used

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  • Method of cultivating chlorella by using brewery industry wastewater
  • Method of cultivating chlorella by using brewery industry wastewater
  • Method of cultivating chlorella by using brewery industry wastewater

Examples

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Effect test

Embodiment 1

[0021] 1. Pretreatment of beer wastewater: Sampling at the entrance of the brewery sewage treatment tank, which belongs to mixed wastewater. After the beer wastewater is retrieved, it is heated and boiled for 5 minutes, filtered with multi-layer gauze, cooled and stored in a sealed environment at 3°C;

[0022] 2. Mix beer wastewater and BG11 liquid medium according to the volume ratio (v / v) of 1:1, 1:3, and 1:1. The three groups of medium are marked as c, d, and e in turn, and then respectively in c Add different concentrations of glucose in the culture medium of groups , d and e, and finally make the final content of glucose in the culture medium of the three groups be 5g / L, 7.5g / L, and 10g / L respectively; in addition, design two control groups, group a and group f, group a uses 100% waste water (that is, beer waste water without adding any other substances) as the medium, and group f uses beer waste water instead of distilled water to prepare BG11 medium, and then adds gluco...

Embodiment 2

[0040] 1) Pretreatment of beer wastewater: Sampling was taken at the entrance of the sewage treatment tank of a brewery in Lanzhou, which belongs to mixed wastewater. After the beer wastewater is retrieved, it is heated and boiled for 5 minutes, filtered with multi-layer gauze, cooled and stored in a sealed environment at 3°C;

[0041] 2) Mix beer wastewater and BG11 liquid medium according to the volume ratio (v / v) of 1:1, 1:3, and 1:1, and the three groups of medium are marked as c, d, and e in turn, and then respectively in Different concentrations of glucose were added to the medium of groups c, d, and e, so that the final contents of glucose in the medium of the three groups were 5g / L, 7.5g / L, and 10g / L respectively; in addition, two control groups were designed, a Group and group f, group a uses 100% waste water (that is, beer waste water without adding any other substances) as the medium, and group f uses beer waste water instead of distilled water to prepare BG11 mediu...

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Abstract

The invention relates to the technical field of microalgal cultivation and industrial wastewater utilization, in particular to a method of cultivating chlorella by using brewery industry wastewater and application of the method. According to the method, wastewater treatment and microalgal cultivation are combined, heterotrophic features of chlorella are utilized with respect to the nowadays' trend that water eutrophication is increasingly serious, waste resourceful treatment and utilization are achieved, the content of nutrient elements to be added is lower, and the cost is low; economic and social comprehensive benefits are higher.

Description

technical field [0001] The invention belongs to the technical field of microalgae cultivation and industrial waste water utilization, in particular to a method for producing chlorella by using beer industrial waste water. Background technique [0002] As the contradiction between population growth and resource shortage continues to intensify, water resources are facing a crisis of shortage, and water pollution has become a very serious global problem. Strengthening the recycling of water resources is an important way to reduce pollution and realize energy saving and emission reduction. Chlorella (Chlorella) is a high-value microalgae, which has the characteristics of rapid growth in general waters and even in wastewater. At present, the cost of open autotrophic production methods commonly used is relatively high. In order to improve production efficiency, many scholars put Chlorella production into comprehensive utilization and environmental governance. The chemical oxygen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/12
Inventor 都宝君
Owner 都宝君
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