CN103253730B - A kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating - Google Patents
A kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating Download PDFInfo
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- CN103253730B CN103253730B CN201310180801.6A CN201310180801A CN103253730B CN 103253730 B CN103253730 B CN 103253730B CN 201310180801 A CN201310180801 A CN 201310180801A CN 103253730 B CN103253730 B CN 103253730B
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- saccharan
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- 239000010794 food waste Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000007062 hydrolysis Effects 0.000 title claims abstract description 16
- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 16
- 102000004169 proteins and genes Human genes 0.000 claims abstract description 19
- 108090000623 proteins and genes Proteins 0.000 claims abstract description 19
- 239000006228 supernatant Substances 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 10
- 238000002798 spectrophotometry method Methods 0.000 claims abstract description 9
- 239000005446 dissolved organic matter Substances 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
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- Physical Water Treatments (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Centrifugal Separators (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating, first select the changing food waste of solid content 40-100g/L, power is adopted to be 0-960W groove type ultrasonic ripple generator, get changing food waste 1L again, put into groove type ultrasonic ripple generator, regulate ultrasonic power between 0-960W, ultrasonic 15min, the ultrasonic acoustic density that changing food waste receives is 0-960W/L, after supersound process, adopt the centrifugal 15min of rotating speed of 15000rpm, then COD in supernatant liquor is measured according to APHA-WPCF1998, protein is measured according to Kjeldahl determination, adopt spectrophotometry saccharan content, supernatant C OD is the highest adds 1.7 times, protein is the highest adds 7.9 times, saccharan is the highest adds 4.5 times, the present invention can improve changing food waste organism stripping content.
Description
Technical field
The invention belongs to changing food waste disposal technology field, be specifically related to a kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating.
Background technology
The Chinese meal kitchen refuse production of 2009 is about 4,000 ten thousand tons, and along with the increase of population, the sustained and rapid development of catering trade, changing food waste generation also will increase year by year, and annual speedup in advance will more than 10%.Changing food waste organic content enriches, and is easy to fermentation and fouls, be difficult to process.Therefore, finding suitable Food waste treatment method is problem demanding prompt solution.The most frequently used processing mode is exactly landfill, because with low cost.But, a large amount of percolates can be produced and make refuse landfill produce more pollution.On the other hand, being rich in organic changing food waste is very valuable resource, can produce through effective fermentative processing additional carbon---the voltaile fatty acid that the energy or production are widely used in sewage work.Much research shows that the main limiting factor of anaerobic fermentation of kitchen waste is hydrolysis and dissolving step, and organism must be in dissolved state, could well be biodegradable.Therefore, the organic dissolution rate improving changing food waste is the main purpose of numerous changing food waste pre-treatment (acid hydrolysis, steam hydrolysis, wet oxidation).
Adopt ultrasonic wave as the pretreated method of changing food waste, improve the content of its dissolved organic matter.Also do not adopt the patent of ultrasound hydrolysis intensive treatment changing food waste at present, relevant research is also considerably less.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating, changing food waste organism stripping content can be improved.
In order to achieve the above object, the technical scheme that the present invention takes is:
A kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating, comprises the following steps:
The first step, selects the changing food waste of solid content 40-100g/L;
Second step, adopts power to be 0-960W groove type ultrasonic ripple generator;
3rd step, gets changing food waste 1L, puts into groove type ultrasonic ripple generator, and regulate ultrasonic power between 0-960W, ultrasonic 15min, the ultrasonic acoustic density that changing food waste receives is 0-960W/L;
4th step, after supersound process, adopt the centrifugal 15min of rotating speed of 15000rpm, then COD in supernatant liquor is measured according to APHA-WPCF1998, measure protein according to Kjeldahl determination, adopt spectrophotometry saccharan content, supernatant C OD is the highest adds 1.7 times, protein is the highest adds 7.9 times, and saccharan is the highest adds 4.5 times.
Tool of the present invention has the following advantages and high-lighting effect:
1. propose first to adopt ultrasonic wave to be hydrolyzed intensive treatment to changing food waste, improve the method for changing food waste organism stripping.
2. the method significantly increases the content of changing food waste dissolved organic matter, after supersound process, changing food waste (solid content=40 and=100) stripping COD is the highest adds 1.6-1.7 doubly, stripping protein is the highest adds 7.7-7.9 doubly, and stripping total reducing sugar is the highest adds 4.4-4.5 doubly.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
Embodiment 1
A kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating, comprises the following steps:
The first step, selects solid content to be the changing food waste of 40g/L;
Second step, adopts power to be 0-960W groove type ultrasonic ripple generator;
3rd step, gets changing food waste 1L, puts into groove type ultrasonic ripple generator, and adjustment ultrasonic power is 240W, ultrasonic 15min, and the ultrasonic acoustic density that changing food waste receives is 240W/L;
4th step, after supersound process, adopt the centrifugal 15min of rotating speed of 15000rpm, then COD in supernatant liquor is measured according to APHA-WPCF1998, measure protein according to Kjeldahl determination, adopt spectrophotometry saccharan content, supernatant C OD adds 0.09 times, protein adds 0.36 times, and saccharan adds 0.54 times.
Embodiment 2
A kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating, comprises the following steps:
The first step, selects solid content to be the changing food waste of 60g/L;
Second step, adopts power to be 0-960W groove type ultrasonic ripple generator;
3rd step, gets changing food waste 1L, puts into groove type ultrasonic ripple generator, and adjustment ultrasonic power is 480W, ultrasonic 15min, and the ultrasonic acoustic density that changing food waste receives is 480W/L;
4th step, after supersound process, adopt the centrifugal 15min of rotating speed of 15000rpm, then COD in supernatant liquor is measured according to APHA-WPCF1998, measure protein according to Kjeldahl determination, adopt spectrophotometry saccharan content, supernatant C OD6 adds 1.6 times, protein 6 adds 7.7 times, and saccharan adds 4.4 times.
Embodiment 3
A kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating, comprises the following steps:
The first step, selects solid content to be the changing food waste of 100g/L;
Second step, adopts power to be 0-960W groove type ultrasonic ripple generator;
3rd step, gets changing food waste 1L, puts into groove type ultrasonic ripple generator, and adjustment ultrasonic power is 960W, ultrasonic 15min, and the ultrasonic acoustic density that changing food waste receives is 960W/L;
4th step, after supersound process, adopt the centrifugal 15min of rotating speed of 15000rpm, then COD in supernatant liquor is measured according to APHA-WPCF1998, measure protein according to Kjeldahl determination, adopt spectrophotometry saccharan content, supernatant C OD adds 1.7 times, protein adds 7.9 times, and saccharan adds 4.5 times.
Claims (4)
1. a changing food waste intensified by ultrasonic wave hydrolysis process for treating, is characterized in that, is made up of following steps:
The first step, selects the changing food waste of solid content 40-100g/L;
Second step, adopts power to be 0-960W groove type ultrasonic ripple generator;
3rd step, gets changing food waste 1L, puts into groove type ultrasonic ripple generator, and regulate ultrasonic power between 0-960W, ultrasonic 15min, the ultrasonic acoustic density that changing food waste receives is 240-960W/L;
4th step, after supersound process, adopt the centrifugal 15min of rotating speed of 15000rpm, then COD in supernatant liquor is measured according to APHA-WPCF 1998, measure protein according to Kjeldahl determination, adopt spectrophotometry saccharan content, supernatant C OD is the highest adds 1.7 times, protein is the highest adds 7.9 times, and saccharan is the highest adds 4.5 times.
2. a kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating according to claim 1, is characterized in that, be made up of following steps:
The first step, selects solid content to be the changing food waste of 40g/L;
Second step, adopts power to be 0-960W groove type ultrasonic ripple generator;
3rd step, gets changing food waste 1L, puts into groove type ultrasonic ripple generator, and adjustment ultrasonic power is 240W, ultrasonic 15min, and the ultrasonic acoustic density that changing food waste receives is 240W/L;
4th step, after supersound process, adopt the centrifugal 15min of rotating speed of 15000rpm, then COD in supernatant liquor is measured according to APHA-WPCF 1998, measure protein according to Kjeldahl determination, adopt spectrophotometry saccharan content, supernatant C OD adds 0.09 times, protein adds 0.36 times, and saccharan adds 0.54 times.
3. a kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating according to claim 1, is characterized in that, be made up of following steps:
The first step, selects solid content to be the changing food waste of 60g/L;
Second step, adopts power to be 0-960W groove type ultrasonic ripple generator;
3rd step, gets changing food waste 1L, puts into groove type ultrasonic ripple generator, and adjustment ultrasonic power is 480W, ultrasonic 15min, and the ultrasonic acoustic density that changing food waste receives is 480W/L;
4th step, after supersound process, adopt the centrifugal 15min of rotating speed of 15000rpm, then COD in supernatant liquor is measured according to APHA-WPCF 1998, measure protein according to Kjeldahl determination, adopt spectrophotometry saccharan content, supernatant C OD6 adds 1.6 times, protein 6 adds 7.7 times, and saccharan adds 4.4 times.
4. a kind of changing food waste intensified by ultrasonic wave hydrolysis process for treating according to claim 1, is characterized in that, be made up of following steps:
The first step, selects solid content to be the changing food waste of 100g/L;
Second step, adopts power to be 0-960W groove type ultrasonic ripple generator;
3rd step, gets changing food waste 1L, puts into groove type ultrasonic ripple generator, and adjustment ultrasonic power is 960W, ultrasonic 15min, and the ultrasonic acoustic density that changing food waste receives is 960W/L;
4th step, after supersound process, adopt the centrifugal 15min of rotating speed of 15000rpm, then COD in supernatant liquor is measured according to APHA-WPCF 1998, measure protein according to Kjeldahl determination, adopt spectrophotometry saccharan content, supernatant C OD adds 1.7 times, protein adds 7.9 times, and saccharan adds 4.5 times.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103834560A (en) * | 2014-03-25 | 2014-06-04 | 清华大学 | Acid producing fermentation tank for treating kitchen wastes and producing carbon source |
| CN115490393B (en) * | 2022-08-22 | 2023-09-05 | 杭州能源环境工程有限公司 | Treatment method for enhancing biodegradability of kitchen waste biogas slurry and sludge recovery capacity |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001259406A (en) * | 2000-03-22 | 2001-09-25 | Sanyo Electric Co Ltd | Stream dividing device with ultrasonic generator and its method |
| CN201250112Y (en) * | 2007-12-05 | 2009-06-03 | 尹英遂 | Novel ultrasonic hydrolysis device |
| CN101759247A (en) * | 2008-10-13 | 2010-06-30 | 赵云峰 | Method for treating wastewater on ultrasonic basis |
| CN202022769U (en) * | 2011-03-08 | 2011-11-02 | 余福华 | Waste water treatment device used for purifying kitchen sewage |
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- 2013-05-16 CN CN201310180801.6A patent/CN103253730B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001259406A (en) * | 2000-03-22 | 2001-09-25 | Sanyo Electric Co Ltd | Stream dividing device with ultrasonic generator and its method |
| CN201250112Y (en) * | 2007-12-05 | 2009-06-03 | 尹英遂 | Novel ultrasonic hydrolysis device |
| CN101759247A (en) * | 2008-10-13 | 2010-06-30 | 赵云峰 | Method for treating wastewater on ultrasonic basis |
| CN202022769U (en) * | 2011-03-08 | 2011-11-02 | 余福华 | Waste water treatment device used for purifying kitchen sewage |
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Effective date of registration: 20180404 Address after: No. 11 B10, No. 11, open source road, Science City, Guangzhou high tech Industrial Development Zone, Guangzhou, Guangdong Patentee after: Guangdong Lian Qing environment Co., Ltd. Address before: 100084 Beijing, Haidian District, 100084 box office box office, Tsinghua University, Patentee before: Tsinghua University |
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Effective date of registration: 20200206 Address after: 100084 Beijing, Haidian District, 100084 box office box office, Tsinghua University, Patentee after: TSINGHUA University Address before: No. 11 B10, No. 11, open source road, Science City, Guangzhou high tech Industrial Development Zone, Guangzhou, Guangdong Patentee before: Guangdong Lian Qing environment Co., Ltd. |