CN107055994B - Efficient recycling treatment device for excess sludge - Google Patents
Efficient recycling treatment device for excess sludge Download PDFInfo
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- CN107055994B CN107055994B CN201710385664.8A CN201710385664A CN107055994B CN 107055994 B CN107055994 B CN 107055994B CN 201710385664 A CN201710385664 A CN 201710385664A CN 107055994 B CN107055994 B CN 107055994B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F11/00—Treatment of sludge; Devices therefor
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F11/02—Biological treatment
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- C13—SUGAR INDUSTRY
- C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
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Abstract
The invention provides a high-efficiency recycling treatment device for excess sludge, which comprises a medicament mixing unit, a liquid-solid separation unit, a liquid-phase concentration unit, a solid-phase crushing unit and a reaction kettle, wherein an outlet of the medicament mixing unit is connected with an inlet of the liquid-solid separation unit; the liquid phase outlet of the liquid-solid separation unit is connected with the inlet of the liquid phase concentration unit, and the solid phase outlet of the liquid-solid separation unit is connected with the inlet of the solid phase crushing unit; the outlet of the liquid phase concentration unit and the outlet of the solid phase crushing unit are both connected with the reaction kettle. The device can improve the protein content in the reaction kettle, improve the utilization rate of the cellulase, reduce the heat inactivation rate of the cellulase and save the consumption of the cellulase.
Description
Technical Field
The invention belongs to the technical field of energy conversion, and relates to a high-efficiency recycling treatment device for excess sludge.
Background
In recent years, the sludge yield has been rapidly increased with the acceleration of town production. The investigation shows that the total output of the sludge in China can break through 3000 ten thousand tons and can break through 6000 ten thousand tons by 2020 by 80 percent of water content. However, the effective disposal of sludge is difficult to achieve, as the final disposal of sludge is faced with a dual choice of safe disposal and recycling. Especially, the surplus sludge contains rich organic matters (such as protein, lipid, lignocellulose and the like), the total organic matters can account for 40-90% of the dry weight of the sludge, and the recycling potential is quite large. Therefore, research and development of a new device for recycling and harmless treatment of excess sludge have great significance. However, the recycling degree of the residual sludge is limited at present, and one of the important reasons is that the existing treatment device cannot effectively improve the protein content in the reaction kettle, so that the utilization rate of the cellulase is low and the heat inactivation rate is high when the residual sludge is treated by the cellulase.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the efficient recycling treatment device for the excess sludge, which can improve the protein content in a reaction kettle, improve the utilization rate of cellulase, reduce the heat inactivation rate of the cellulase and save the consumption of the cellulase.
The invention is realized by the following technical scheme:
an efficient recycling treatment device for excess sludge comprises a medicament mixing unit, a liquid-solid separation unit, a liquid-phase concentration unit, a solid-phase crushing unit and a reaction kettle, wherein,
the outlet of the medicament mixing unit is connected with the inlet of the liquid-solid separation unit; the liquid phase outlet of the liquid-solid separation unit is connected with the inlet of the liquid phase concentration unit, and the solid phase outlet of the liquid-solid separation unit is connected with the inlet of the solid phase crushing unit; the outlet of the liquid phase concentration unit and the outlet of the solid phase crushing unit are both connected with the reaction kettle.
Preferably, the medicament mixing unit comprises a feed liquid mixer, an outlet of the feed liquid mixer is sequentially connected with a feed liquid flow regulating valve and a feed liquid centrifugal pump, and an outlet of the feed liquid centrifugal pump is connected with an inlet of the liquid-solid separation unit.
Further preferably, the medicament mixing unit further comprises an electron accelerator, the electron accelerator being below and aligned with the feed liquid mixer.
Further preferably, an inlet of the feed liquid mixer is sequentially connected with a feed centrifugal pump and a feed flow regulating valve, and an inlet of the feed flow regulating valve is connected with a medicament input pipeline and a surplus sludge input pipeline through a three-way valve.
Preferably, the liquid-solid separation unit comprises a centrifuge, and an inlet of the centrifuge is connected with an outlet of the medicament mixing unit; the liquid phase outlet of the centrifugal machine is connected with the inlet of the liquid phase centrifugal pump, and the outlet of the liquid phase centrifugal pump is connected with the inlet of the liquid phase concentration unit; the solid phase outlet of the centrifugal machine is connected with the inlet of the solid phase crushing unit.
Preferably, the liquid phase concentration unit comprises a heat exchanger, an inlet of the heat exchanger is connected with an outlet of the liquid-solid separation unit, an outlet of the heat exchanger is connected with an inlet of a concentrated solution centrifugal pump, and an outlet of the concentrated solution centrifugal pump is connected with the reaction kettle.
Preferably, the solid-phase crushing unit comprises a dryer, a crusher, a powder flow regulating valve and a powder conveying pump which are sequentially connected, wherein an inlet of the dryer is connected with a solid-phase outlet of the liquid-solid separation unit, and an outlet of the powder conveying pump is connected with the reaction kettle.
Preferably, the reaction kettle further comprises a reducing sugar collecting unit, wherein the inlet of the reducing sugar collecting unit is connected with the outlet of the reaction kettle.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a high-efficiency recycling treatment device for excess sludge, which comprises a medicament mixing unit, a liquid-solid separation unit, a liquid-phase concentration unit, a solid-phase crushing unit and a reaction kettle. The agent mixing unit can mix the surplus sludge with the cracking agent to realize the cracking of the sludge, release sludge protein and stabilize the cracking of the sludge lignocellulose, and provide favorable conditions for the subsequent further treatment of protein, lignocellulose and other organic matters in the surplus sludge; the liquid-solid separation unit performs solid-liquid separation on the broken excess sludge so as to facilitate the independent treatment of a solid phase and a liquid phase; the liquid phase concentration unit is used for concentrating the liquid phase separated by the liquid-solid separation unit, so that the volume of the liquid phase is reduced; after the concentrated liquid phase enters the reaction kettle, the concentration of protein and lignocellulose particles in the reaction kettle is correspondingly improved due to the reduction of the volume of the liquid phase; the solid-phase crushing unit is used for drying and crushing the solid phase separated by the liquid-solid separation unit, and the solid-phase crushing unit can further promote the release of sludge protein and the breaking and stabilization of lignocellulose because the solid phase contains a large amount of sludge protein and lignocellulose; when the crushed powder enters the reaction kettle, the crushed powder is mixed with the concentrated liquid phase, the sludge protein in the crushed powder can be better released, and the lignocellulose can be better exposed; when cellulase is added into the reaction kettle for reaction, the cellulase can be well protected due to higher concentration of protein contained in a liquid phase in the reaction kettle, and is not easy to be thermally inactivated; moreover, because the liquid phase in the reaction kettle is less, the concentration of the exposed lignocellulose particles is larger, the activity and enzymolysis capability of the cellulase are fully displayed, the efficiency of the cellulase is better, and the reducing sugar after enzymolysis is easier to separate. The continuous excess sludge recycling device provided by the invention has the characteristics of novel structure, convenience in operation, low energy consumption, capability of continuous production, high efficiency and the like.
Further, the medicament mixing unit further comprises an electron accelerator, which is below and aligned with the feed liquid mixer. The reagent mixing unit strengthens the cracking efficiency of the cracking reagent on the sludge by utilizing the irradiation action of the electron accelerator, can realize the cracking of the sludge without higher energy consumption, avoids the excessive damage of organic matters of the sludge caused by high temperature in the traditional treatment method, and has large irradiation treatment capacity of the electron accelerator, short time and simple operation.
Drawings
FIG. 1 is a schematic diagram of the apparatus for efficiently recycling excess sludge according to the present invention.
Wherein: 1 is a feed liquid mixer; 2 is an electron accelerator; 3 is a centrifuge; 4 is a dryer; 5 is a pulverizer; 6 is a heat exchanger; 7 is a reaction kettle; 8 is a feeding flow regulating valve; 9 is a feed liquid flow regulating valve; 10 is a powder flow regulating valve; 11 is a feeding centrifugal pump; 12 is a feed liquid centrifugal pump; 13 is a liquid phase centrifugal pump; 14 is a concentrate centrifugal pump; 15 is a powder delivery pump.
Detailed Description
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1, the device for efficiently recycling excess sludge comprises a medicament mixing unit, a liquid-solid separation unit, a liquid-phase concentration unit, a solid-phase crushing unit and a reaction kettle 7.
Wherein the medicine mixing unit comprises a feed liquid mixer 1 and an electron accelerator 2. The inlet of the feed liquid mixer 1 is sequentially connected with a feed centrifugal pump 11 and a feed flow regulating valve 8, and the inlet of the feed flow regulating valve 8 is connected with a medicament input pipeline and a surplus sludge input pipeline through a three-way valve; the outlet of the feed liquid mixer 1 is sequentially connected with a feed liquid flow regulating valve 9 and a feed liquid centrifugal pump 12, and the outlet of the feed liquid centrifugal pump 12 is connected with the inlet of the centrifugal machine 3. The electron accelerator 2 is below the feed liquid mixer 1 and is aligned with the feed liquid mixer 1.
The feed liquid mixer 1 can mix the surplus sludge with the cracking agent to realize the cracking of the sludge, release sludge protein and stabilize the cracking of the sludge lignocellulose, and provide favorable conditions for the subsequent further treatment of the protein, lignocellulose and other organic matters in the surplus sludge; the electron accelerator 2 is aligned to the feed liquid mixer 1, can emit radiation to the feed liquid mixer 1, can strengthen the cracking efficiency of a cracking agent on sludge, can realize the cracking of the sludge without higher energy consumption, avoids excessive damage of sludge organic matters caused by high temperature in the traditional treatment method, and has large radiation treatment capacity, short time and simple operation.
The liquid-solid separation unit comprises a centrifugal machine 3, and an inlet of the centrifugal machine 3 is connected with an outlet of a feed liquid centrifugal pump 12; the liquid phase outlet of the centrifugal machine 3 is connected with the inlet of the liquid phase centrifugal pump 13, and the outlet of the liquid phase centrifugal pump 13 is connected with the inlet of the heat exchanger 6; the solid phase outlet of the centrifuge 3 is connected to the inlet of the dryer 4. The centrifuge 3 carries out solid-liquid separation on the broken excess sludge so as to facilitate the independent treatment of solid phase and liquid phase.
The liquid phase concentration unit comprises a heat exchanger 6, an inlet of the heat exchanger 6 is connected with an outlet of a liquid phase centrifugal pump 13, an outlet of the heat exchanger 6 is connected with an inlet of a concentrated solution centrifugal pump 14, and an outlet of the concentrated solution centrifugal pump 14 is connected with the reaction kettle 7. The heat exchanger 6 concentrates the liquid phase separated by the liquid-solid separation unit, and reduces the volume of the liquid phase.
The solid-phase crushing unit comprises a dryer 4, a crusher 5, a powder flow regulating valve 10 and a powder conveying pump 15 which are sequentially connected, wherein an inlet of the dryer 4 is connected with a solid-phase outlet of the centrifugal machine 3, and an outlet of the powder conveying pump 15 is connected with the reaction kettle 7. The solid phase crushing unit is used for drying and crushing the solid phase separated by the liquid-solid separation unit, and the solid phase crushing unit can further promote the release of sludge protein and the breaking and stabilization of lignocellulose because the solid phase contains a large amount of sludge protein and lignocellulose.
Wherein, the reaction kettle 7 receives the concentrated liquid phase and the crushed solid phase, and carries out enzymolysis reaction after adding cellulase, and the lignocellulose inside the reaction kettle is decomposed into reducing sugar which is used for collection and utilization. After the concentrated liquid phase enters the reaction kettle 7, the concentration of protein and lignocellulose particles in the reaction kettle 7 is correspondingly improved due to the reduction of the volume of the liquid phase; moreover, after the solid phase is dried and crushed, the sludge protein in the solid phase can be better released, and the lignocellulose can be better exposed, so that the concentration of the protein and the lignocellulose particles in the reaction kettle 7 can be obviously improved. The concentration of the protein and lignocellulose particles is improved, so that on one hand, the cellulase is not easy to inactivate, on the other hand, the enzymolysis efficiency of the cellulase can be fully utilized, the enzymolysis efficiency of the cellulase is improved, and the consumption of the cellulase is reduced.
The continuous excess sludge recycling device comprises a reducing sugar collecting unit, and an inlet of the reducing sugar collecting unit is connected with an outlet of the reaction kettle 7. The reducing sugar collecting unit is used for collecting reducing sugar generated in the reaction kettle 7.
The invention relates to a high-efficiency recycling treatment device for excess sludge, which comprises the following steps:
the surplus sludge and the cracking agent are input into the feed liquid mixer 1 by a feeding centrifugal pump 11, and the flow is controlled by a feeding flow regulating valve 8; an electron accelerator 2 arranged under the feed liquid mixer 1 irradiates the material, the irradiated material is conveyed to a centrifugal machine 3 by a feed liquid centrifugal pump 12 for solid-liquid separation, and the flow is controlled by a feed liquid flow regulating valve 9; the separated solid enters a dryer 4 for drying treatment, then is crushed by a crusher 5, is conveyed to a reaction kettle 7 by a powder conveying pump 15, and the flow is controlled by a powder flow regulating valve 10; the separated liquid is conveyed to the heat exchanger 6 by the liquid-phase centrifugal pump 13 for concentration treatment, and the concentrated liquid is conveyed to the reaction kettle 7 by the concentrated liquid centrifugal pump 14. Then, the enzymolysis saccharification reaction is carried out under the action of cellulase, and the reducing sugar is collected.
Claims (2)
1. The method for efficiently recycling the excess sludge is characterized by being based on an efficient recycling device for the excess sludge, wherein the efficient recycling device for the excess sludge comprises a medicament mixing unit, a liquid-solid separation unit, a liquid-phase concentration unit, a solid-phase crushing unit and a reaction kettle (7),
the outlet of the medicament mixing unit is connected with the inlet of the liquid-solid separation unit; the liquid phase outlet of the liquid-solid separation unit is connected with the inlet of the liquid phase concentration unit, and the solid phase outlet of the liquid-solid separation unit is connected with the inlet of the solid phase crushing unit; the outlet of the liquid phase concentration unit and the outlet of the solid phase crushing unit are connected with a reaction kettle (7);
the medicament mixing unit comprises a feed liquid mixer (1) and an electron accelerator (2), wherein the electron accelerator (2) is arranged below the feed liquid mixer (1) and is aligned to the feed liquid mixer (1), an outlet of the feed liquid mixer (1) is connected with an inlet of the liquid-solid separation unit through a pipeline, and a feed liquid flow regulating valve (9) and a feed liquid centrifugal pump (12) are sequentially arranged on the pipeline; the inlet of the feed liquid mixer (1) is connected with a tee joint through a pipeline, the other two interfaces of the tee joint are respectively connected with a medicament input pipeline and an excess sludge input pipeline, and a feed flow regulating valve (8) and a feed centrifugal pump (11) are sequentially arranged on the pipeline of the tee joint connected with the inlet of the feed liquid mixer (1);
the liquid-solid separation unit comprises a centrifugal machine (3), and an inlet of the centrifugal machine (3) is connected with an outlet of the medicament mixing unit; the liquid phase outlet of the centrifugal machine (3) is connected with the inlet of the liquid phase centrifugal pump (13), and the outlet of the liquid phase centrifugal pump (13) is connected with the inlet of the liquid phase concentration unit; the solid phase outlet of the centrifugal machine (3) is connected with the inlet of the solid phase crushing unit;
the liquid phase concentration unit comprises a heat exchanger (6), an inlet of the heat exchanger (6) is connected with an outlet of a liquid phase centrifugal pump (13), an outlet of the heat exchanger (6) is connected with an inlet of a concentrated solution centrifugal pump (14), and an outlet of the concentrated solution centrifugal pump (14) is connected with the reaction kettle (7);
the solid-phase crushing unit comprises a dryer (4), a crusher (5), a powder flow regulating valve (10) and a powder conveying pump (15) which are sequentially connected, wherein an inlet of the dryer (4) is connected with a solid-phase outlet of the centrifugal machine (3), and an outlet of the powder conveying pump (15) is connected with the reaction kettle (7);
the surplus sludge and the cracking agent are input into a feed liquid mixer (1) by a feed centrifugal pump (11), and the flow is controlled by a feed flow regulating valve (8); an electron accelerator (2) arranged under the feed liquid mixer (1) irradiates the material, the irradiated material is conveyed to a centrifugal machine (3) by a feed liquid centrifugal pump (12) for solid-liquid separation, and the flow is controlled by a feed liquid flow regulating valve (9); the separated solid enters a dryer (4) for drying treatment, then is crushed by a crusher (5), is conveyed to a reaction kettle (7) by a powder conveying pump (15), and the flow is controlled by a powder flow regulating valve (10); the separated liquid is conveyed into a heat exchanger (6) by a liquid-phase centrifugal pump (13) for concentration treatment, the concentrated liquid is conveyed into a reaction kettle (7) by a concentrated liquid centrifugal pump (14), and enzymolysis saccharification reaction is carried out under the action of cellulase, and reducing sugar is collected.
2. The method for efficiently recycling excess sludge according to claim 1, further comprising a reducing sugar collecting unit, wherein an inlet of the reducing sugar collecting unit is connected with an outlet of the reaction kettle (7).
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| CN201710385664.8A CN107055994B (en) | 2017-05-26 | 2017-05-26 | Efficient recycling treatment device for excess sludge |
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| CN201710385664.8A CN107055994B (en) | 2017-05-26 | 2017-05-26 | Efficient recycling treatment device for excess sludge |
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| CN107585982B (en) * | 2017-10-19 | 2023-12-01 | 江苏海洋大学 | Recovery and reducing sugar conversion treatment device and method for proteins and phosphorus in municipal domestic sludge |
| CN107601793B (en) * | 2017-10-19 | 2023-11-24 | 榆林学院 | Device and method for simultaneously preparing protein intercalated hydrotalcite material by sludge protein extraction |
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| CN101870564A (en) * | 2010-06-24 | 2010-10-27 | 天津大学 | Device for preparing sludge protein foam concrete continuously |
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| AU2012358382A1 (en) * | 2011-12-21 | 2014-07-17 | Bl Technologies, Inc. | Microwave processing of wastewater sludge |
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| CN206814603U (en) * | 2017-05-26 | 2017-12-29 | 榆林学院 | A kind of serialization excess sludge resource utilization device |
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- 2017-05-26 CN CN201710385664.8A patent/CN107055994B/en active Active
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| CN102876729A (en) * | 2005-09-30 | 2013-01-16 | 东能量生成股份有限公司 | Non-pressurised pre-treatment, enzymatic hydrolysis and fermentation of waste fractions |
| CN101698559A (en) * | 2009-11-06 | 2010-04-28 | 江苏技术师范学院 | Organic sludge resource recovery processing method |
| CN101870564A (en) * | 2010-06-24 | 2010-10-27 | 天津大学 | Device for preparing sludge protein foam concrete continuously |
| AU2012358382A1 (en) * | 2011-12-21 | 2014-07-17 | Bl Technologies, Inc. | Microwave processing of wastewater sludge |
| CN105217905A (en) * | 2015-09-30 | 2016-01-06 | 王立鹏 | The combined modified flyash of gamma-rays cracks the method for excess sludge |
| CN205710359U (en) * | 2016-03-02 | 2016-11-23 | 广州市尊积环保科技有限公司 | A kind of recycling treatment system of organic sludge quick zero blowdown continuously |
| CN206814603U (en) * | 2017-05-26 | 2017-12-29 | 榆林学院 | A kind of serialization excess sludge resource utilization device |
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