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Integrated production method of organic sewage/waste residue treatment, microalgae culturing and oil refining

A technology for organic sewage and production methods, which is applied in flotation water/sewage treatment, neutralized water/sewage treatment, water/sewage multi-stage treatment, etc., and can solve problems such as eutrophication of water bodies

Inactive Publication Date: 2009-10-07
启东市三江建筑机械有限公司
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Problems solved by technology

[0004] At present, the traditional sewage biochemical treatment technology is still mostly used to remove organic matter in sewage. Although this method can remove part of organic matter in sewage and reduce BOD and COD, the effluent still contains more nutrients such as nitrogen and phosphorus, which may easily cause water body enrichment. Nutritization

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  • Integrated production method of organic sewage/waste residue treatment, microalgae culturing and oil refining

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the drawings and the embodiments given in the drawings. The production technology of the present invention is easy to implement for people in the field.

[0024] A sewage treatment plant, a large-scale biogas digester, a microalgae breeding and processing plant, and a biodiesel refinery are built near a large pig farm that produces 100,000 pigs per year. Organic sewage and waste residues (mainly including pig farm manure, urine, Sewage, nearby straw, etc.) coupled with algae cultivation and oil refining production methods to produce biodiesel, microalgal protein, microalgal polysaccharides, microalgal fertilizer, etc., see figure 1 .

[0025] The manure water and washing sewage collected from the pig breeding site are removed by the grille to remove mechanical impurities such as large floating matter and then enter the adjustment tank to adjust the sewage water volume, water quality, and pH value, and...

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Abstract

The invention relates to the environmental protection field, the microalgae cultivation engineering field and the biodiesel refining field, specifically an integrated production method of organic sewage / waste residue treatment, microalgae culturing and oil refining. The method comprises: treating the organic sewage and organic waste residue respectively by anaerobic biochemical technology to generate biogas for generating electricity and supplying heat; performing aerobic biochemical treatment to the sewage and biogas slurry; blending into nutrient solution, and adding into large-scale photobioreactor; passing into biogas, burning to generate carbon dioxide waste gas for culturing oil-containing microalgae; collecting the obtained microalgae by air floatation method and breaking the walls; separating the oil-containing microalgae into microalgae oil, microalgae protein, microalgae polysaccharide and microalgae residue; and refining biodiesel accorded with the national standard using the microalgae oil as raw oil. The invention integrates the organic sewage and waste residue treatment, microalgae culturing and processing, and biodiesel refining; reduces production cost; realizes biodiesel clean production; and treats the 'three wastes'.

Description

[Technical Field] [0001] The invention relates to the field of environmental protection, the field of microalgae cultivation engineering, and the field of biodiesel refining, in particular to a production method of organic sewage waste residue treatment coupled with algae cultivation and oil refining. [Background technique] [0002] The current global energy crisis is increasingly intensifying, the flooding of eutrophic water bodies has become an environmental hazard, the greenhouse effect caused by excessive carbon dioxide emissions has produced serious climate disasters, and the environmental protection situation is very severe. Water eutrophication refers to the water pollution caused by the excessive content of plant nutrients such as nitrogen and phosphorus. These excess nutrients mainly come from urban and rural domestic sewage, as well as organic sewage and organic waste generated in industrial and agricultural production, especially breeding farms, slaughterhouses, meat p...

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Application Information

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IPC IPC(8): C02F9/14C10G3/00C10G1/00C05G1/00C12N1/12C12P7/64C02F3/30C02F1/50C02F1/66C02F1/24
CPCY02E50/13Y02E50/10Y02P30/20
Inventor 蔡志武
Owner 启东市三江建筑机械有限公司
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