Comprehensive processing method for squeezing sewage generated in process of extracting xanthophyll from tagetes erecta

A comprehensive treatment, lutein technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of no resource treatment method and no effective treatment. , to achieve the effect of low cost, low consumption, economical and reasonable

Active Publication Date: 2014-10-08
HUAZHONG AGRI UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

However, since marigold pressing sewage contains a large amount of reusable organic components, it has not been effectively treated due to direct purification, and there is no resource treatment method for it at present.

Method used

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  • Comprehensive processing method for squeezing sewage generated in process of extracting xanthophyll from tagetes erecta
  • Comprehensive processing method for squeezing sewage generated in process of extracting xanthophyll from tagetes erecta
  • Comprehensive processing method for squeezing sewage generated in process of extracting xanthophyll from tagetes erecta

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] figure 1 The shown comprehensive treatment equipment for extracting lutein from marigolds, according to terrain conditions or artificial construction, includes primary sedimentation tank 1, primary filter tank 2, aeration system 3, and secondary sedimentation tank connected in sequence from high to low. Pool 4, anaerobic fermentation system 5, triple sedimentation tank 6, secondary filter tank 7, decolorization tank 8 and constructed wetland system 9. The three settling tank 6 is provided with a sludge pump 6.1 for sending the bottom sludge into the anaerobic fermentation system.

[0036] Such as figure 2 As shown, the primary settling tank 1, the secondary settling tank 4 and the tertiary settling tank 6 have the same tank body structure, and the bottoms are slopes extending upwards at α=15 from the horizontal plane, and ou...

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Abstract

A disclosed comprehensive processing method for squeezing sewage generated in a process of extracting xanthophyll from tagetes erecta comprises the following steps: performing preliminary precipitation; filtering the upper-layer liquid, adding aerobic activated sludge into the filtrate and aerating for 8-10 days; performing precipitation on the aerated upper-layer liquid; adding anaerobic activated sludge into the upper-layer liquid subjected to precipitation and performing anaerobic fermentation for 8-20 days, and collecting generated biogas; performing precipitation on the supernatant subjected to anaerobic fermentation; filtering the upper-layer liquid subjected to precipitation, and performing decolouring processing; and enabling a clear liquid subjected to decolouring to flow out and storing in constructed wetland. Through precipitation, filtering, aeration, anaerobic fermentation, decolouring and constructed-wetland storage for comprehensively processing squeezing sewage generated in the process of extracting xanthophyll from tagetes erecta, the comprehensive processing method is low in cost, reasonable in economy and small in consumption, is capable of substantially reducing COD of squeezing sewage and purifying water quality, obtaining biogas energy source, and finally enabling wastewater to reach the standard by combining constructed-wetland ecological processing, helps to beautify environment, is high in automation degree and helps to reduce labor intensity.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a comprehensive treatment method for pressing sewage obtained by extracting lutein from marigolds. Background technique [0002] Marigold is an annual herb, rich in lutein, and is an ideal raw material for extracting pure natural yellow pigment. Lutein is a natural pigment widely found in vegetables, flowers, fruits and some algae. It can delay vision degeneration and blindness caused by macular degeneration in the elderly, as well as cardiovascular diseases caused by aging. sclerosis, coronary heart disease and neoplastic disease. At the same time, lutein is not only widely used in the field of feed additives and food additives, but also more and more used in the research and development and production of functional health food. [0003] Before extracting lutein from marigolds, it is necessary to press the marigolds to squeeze out the water, and then carry out the subsequent treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 王媛媛张衍林李武孟亮李善军樊启洲邓在京孟庆健赵亮朱驰昊艾平晏水平周洪亮翟红
Owner HUAZHONG AGRI UNIV
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