CN113896400A - Low-temperature hydrolysis drying process system - Google Patents
Low-temperature hydrolysis drying process system Download PDFInfo
- Publication number
- CN113896400A CN113896400A CN202111216709.1A CN202111216709A CN113896400A CN 113896400 A CN113896400 A CN 113896400A CN 202111216709 A CN202111216709 A CN 202111216709A CN 113896400 A CN113896400 A CN 113896400A
- Authority
- CN
- China
- Prior art keywords
- low
- drying
- hydrolysis
- temperature
- temperature hydrolysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- 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
-
- 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
-
- 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
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
Abstract
The invention discloses a low-temperature hydrolysis drying process, which comprises the following steps: firstly, adding organic acid into the livestock manure for low-temperature hydrolysis; then vacuumizing the livestock manure hydrolyzed at low temperature, and dehydrating in the first step; and finally, drying the dehydrated product in the first step by using hot air to perform dehydration in the second step. The invention also discloses a low-temperature hydrolysis drying system. According to the invention, organic acid is added into excrement for low-temperature hydrolysis, internal water is more easily removed from the raw material subjected to low-temperature hydrolysis, and absorbed water and bound water are converted into free water, so that a better drying effect is achieved, and meanwhile, nutrient loss caused by complete hydrolysis can be avoided through low-temperature hydrolysis; after hydrolysis, a 2-level dehydration process with matched vacuum dehydration and drying is adopted, and the dehydration speed is high and the effect is good. The dehydration system adopted by the invention has a simple structure, and can fully utilize gas and liquid obtained in the dehydration process while carrying out low-temperature hydrolysis drying, thereby avoiding waste.
Description
Technical Field
The invention belongs to the field of recycling of livestock and poultry manure, and particularly relates to a low-temperature hydrolysis drying process system.
Background
In recent years, the total amount of livestock and poultry manure in China is about 40 hundred million tons every year, the culture scale is continuously increased, and if the livestock and poultry manure cannot be reasonably treated, serious environmental pollution can be caused. The dehydration of the livestock and poultry excrement is an important pretreatment process for treating the excrement, and the dehydrated excrement is convenient to store and can be better utilized.
The conventional livestock and poultry manure dehydration technology comprises the following steps: natural drying, biological drying, high-temperature rapid drying, mechanical drying, chemical reagent oxidation, flocculation and the like, wherein the natural drying requires too long time and the dehydration effect is poor; the biological drying usually adopts a fermentation method, and the practical application of the method is limited by the long fermentation period; the high-temperature quick drying has high energy consumption, and simultaneously, the high temperature can also influence the components in the excrement and influence the economic value of the excrement; the mechanical drying energy consumption is high, and the dehydration effect is difficult to meet the requirement; when a chemical reagent is used for oxidation and flocculation, the reagent in the excrement is difficult to recover, and meanwhile, the reagent needs to be continuously added in the system operation process, so that the operation cost is high.
Therefore, the processes have the defects of long time consumption, high energy consumption and the like, and the application and popularization of the processes in the livestock and poultry manure treatment market are limited, so that a method is urgently needed, the time consumption and the energy consumption of the livestock and poultry manure dehydration and drying process can be shortened, and the economical efficiency and the applicability are improved.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems of high energy consumption, long time and poor dehydration effect of the existing livestock and poultry manure dehydration and drying process, thereby providing a process and equipment thereof.
Therefore, the invention adopts the following technical scheme:
the invention provides a low-temperature hydrolysis drying process, which comprises the following steps:
s1: adding organic acid into the livestock manure for low-temperature hydrolysis;
s2: vacuumizing the livestock manure hydrolyzed at low temperature, and dehydrating in the first step;
s3: and drying the feces dehydrated in the first step by using hot air to perform dehydration in a second step.
Further, the low-temperature hydrolysis in step S1 is hydrolysis under acidic conditions by adding organic acid to the livestock manure.
The hydrolysis pH value is 4-6, the hydrolysis temperature is 60-180 deg.C, the pressure is 1bar-20bar, and the hydrolysis time is 0.5-2 hr.
The hot air temperature in step S3 is 110-220 ℃.
The invention also provides a low-temperature hydrolysis drying system which comprises a low-temperature hydrolysis device, a vacuumizing device and a drying device, wherein gas exhausted from the low-temperature hydrolysis device is heated by the heating device and then enters the drying device for drying.
The device further comprises a pre-dehydration hopper, the livestock manure is hydrolyzed in the low-temperature hydrolysis device and then enters the pre-dehydration hopper, an outlet of the pre-dehydration hopper is connected with a vacuumizing device, the livestock manure is subjected to solid-liquid separation through vacuumizing, and the solid manure enters the drying device and is dried by hot air.
The drying device is characterized by further comprising a cyclone separator and a condenser, hot air exhausted from the drying device is subjected to gas-solid separation through the cyclone separator, gas is circulated to enter the low-temperature hydrolysis device for heating after condensed water is exhausted from the condenser, and solid is circulated to enter the drying device for drying again.
The liquid dung circulating pool is used for collecting liquid separated by the vacuumizing device and water condensed by the condenser, and the liquid dung circulating pool enters the low-temperature hydrolysis device through the liquid dung circulating pump to supplement water.
The technical scheme of the invention has the following advantages:
(1) the organic acid is added into the excrement for low-temperature hydrolysis, the raw material after low-temperature hydrolysis is easier to remove internal water, absorbed water and combined water are converted into free water, and a better drying effect is achieved.
(2) The invention adopts 2-stage dehydration process of vacuum dehydration and drying after hydrolysis, has high dehydration speed and good effect, and simultaneously, hot air adopted by drying can be recycled, thereby saving energy.
(3) According to the invention, organic acid is used as a pH regulator and a hydrolysis auxiliary raw material, and then the organic acid enters the liquid manure circulating pool, so that the organic acid is not retained in the dried manure, and the obtained dehydrated manure is not required to be subjected to impurity removal treatment, so that the steps are saved.
(4) The dehydration system adopted by the invention has a simple structure, can fully utilize gas and liquid obtained in the dehydration process while hydrolyzing and drying at low temperature, can keep the heat value of the product relatively intact while saving raw materials, does not cause the escape of volatile matters of the product, has high heat value of the product, is arranged into a closed structure in the whole structure, reduces water required to be added when preventing heat loss, reduces the water consumption of the system, has universality, and is particularly suitable for arid water-deficient areas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a low-temperature hydrolysis drying system provided in embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of the low temperature hydrolysis tank of FIG. 1;
fig. 3 is a schematic structural diagram of the drying apparatus in fig. 1.
Reference numerals:
1: a low temperature hydrolysis unit; 2: a liquid manure circulating pump; 3: a pre-dewatering hopper; 4: a screw conveyor; 5: a vacuum pumping device; 6: a liquid manure circulation tank; 7: an air heater; 8: a circulating fan; 9: a drying device; 10: a condenser; 11: a cyclone separator;
101: a first conduit; 102: a second conduit; 103: a third pipeline; 104: a fourth conduit; 105: a fifth pipeline; 106: a polymer gas outlet header; 107: a macromolecular composite heat exchange tube bundle; 108: a polymer air inlet header; 109: a fluorine plastic steel stirring device;
601: a sixth pipeline; 602: a seventh pipe; 603: an eighth conduit; 604; a ninth conduit;
901: a tenth conduit; 902: an eleventh pipe; 903: a twelfth duct; 904: an annular cavity; 905: an inner cylinder cavity; 906: an inner barrel;
1101: a thirteenth pipe; 1102: a fourteenth pipe.
Detailed Description
The following examples are provided to further understand the present invention, not to limit the scope of the present invention, but to provide the best mode, not to limit the content and the protection scope of the present invention, and any product similar or similar to the present invention, which is obtained by combining the present invention with other prior art features, falls within the protection scope of the present invention.
The examples do not show the specific experimental steps or conditions, and can be performed according to the conventional experimental steps described in the literature in the field.
Example 1
The embodiment provides a low-temperature hydrolysis drying system, as shown in fig. 1, which includes a low-temperature hydrolysis device 1, a liquid manure circulation pump 2, a pre-dehydration hopper 3, a spiral conveying device 4, a vacuum extractor 5, a liquid manure circulation tank 6, an air heater 7, a circulating fan 8, a drying device 9, a condenser 10, and a cyclone separator 11. Excrement and sewage enters the low-temperature hydrolysis device 1 through the first pipeline 101, hydrolysis reaction occurs in the low-temperature hydrolysis device 1, excrement after hydrolysis is discharged through the third pipeline 103 and enters the pre-dehydration hopper 3, and the vacuumizing device 5 generates negative pressure at the outlet of the pre-dehydration hopper 3 to promote the preliminary solid-liquid separation of the excrement and sewage in the pre-dehydration hopper 3. The liquid dung enters the liquid dung circulating pool 6 through a sixth pipeline 601, the pre-dehydrated solid dung is conveyed to a drying device 9 through a spiral conveying device 4, and the dried solid dung is discharged through a twelfth pipeline 903.
As shown in fig. 2, the low-temperature hydrolysis device 1 includes a high-molecular composite heat exchange tube bundle 107, a high-molecular inlet header 108, a high-molecular outlet header 106, a fluoroplastic steel stirring device 109, a hot circulating air inlet connected to the fourth pipeline 104, a hot circulating air outlet connected to the second pipeline 102, and a liquid manure recharging port connected to the fifth pipeline 105. The circulating hot air is uniformly distributed to the polymer composite heat exchange tube bundle 107 through the polymer air inlet header 108, the excrement is heated through the polymer composite heat exchange tube bundle 107, and the circulating hot air after heat exchange is discharged out of the low-temperature hydrolysis device 1 through the polymer air outlet header 106. The fluoroplastic steel stirring device 109 improves the heat exchange capacity of the high polymer heat exchange tube bundle 107 by strengthening the mass transfer effect of excrement, improves the uniformity of the temperature field of the excrement in the low-temperature hydrolysis device 1, adopts corrosion-resistant high polymer materials or composite materials based on the corrosion-resistant high polymer materials in the low-temperature hydrolysis device 1, and is resistant to the acid environment of hydrolysis, so that the service life of the low-temperature hydrolysis device 1 is greatly prolonged, and the maintenance frequency is reduced.
As shown in fig. 3, the drying device 9 includes an annular cavity 904 and an inner drum 906. The circulating hot air discharged from the low-temperature hydrolysis device 1 enters the drying device 9 through the second pipeline 102 to heat and dry the excrement. A portion of the circulating hot air heats the inner barrel 906 via the annular cavity 904 and is subsequently exhausted via the eleventh conduit 902; the remaining circulating hot air directly dries the feces through the inner drum cavity 905 and is then exhausted through the tenth duct 901. The excrement and urine directly contacts with the hot circulating air in the inner barrel cavity 905 in a countercurrent mode, the wall surface of the inner barrel 906 indirectly transfers heat with the circulating hot air in the annular cavity 904, the inner barrel 906 of the drying device 9 rotates around the axis, and the residence time of the excrement and urine in the drying device 9 is controlled by the rotating speed of the inner barrel 906.
The circulating hot air discharged from the drying device 9 enters the cyclone separator 11 through the tenth duct 901 for gas-solid separation. The solid manure carried out of the drying device 9 by the gas is separated from the hot air and is sent back to the spiral conveying device 4 through a fourteenth pipeline 1102; the circulating hot air after gas-solid separation is cooled in the condenser 10 through a thirteenth pipeline 1101, the condensed water is used as the water supplement of the low-temperature hydrolysis device 1 and flows back to the liquid manure circulation tank 6 through a seventh pipeline 602, and the cooled hot air is converged to an eleventh pipeline 902.
The hot air in the eleventh pipeline 902 is pumped to the air heater 7 by the circulating fan 8, and the heated hot air enters the low-temperature hydrolysis device 1 through the fourth pipeline 104 to heat the manure.
Clear liquid in the liquid manure circulating pool 6 enters the liquid manure circulating pump 2 through a ninth pipeline 604 and enters the low-temperature hydrolysis tank 1 through a fifth pipeline 105, and bottom sludge and the rest of the clear liquid are discharged out of the system through an eighth pipeline 603.
Example 2
The embodiment provides a low-temperature hydrolysis drying process, and the system provided by the embodiment 1 is adopted, wherein the raw material is fresh cow dung, and the moisture content of the cow dung is 80% -90%.
Adding acetic acid into the low-temperature hydrolysis device, and controlling the pH value to be 4.0-4.5. The temperature of the circulating hot air at the outlet of the air heater is controlled to be 190-218 ℃, and the flow of the circulating fan is controlled to ensure that the temperature of the excrement in the low-temperature hydrolysis device is 130-180 ℃. Controlling the retention time of the excrement in the low-temperature hydrolysis device to be 1-1.5 hours.
And opening a valve at the bottom of the low-temperature hydrolysis device to allow the hydrolyzed cow dung to flow into a pre-dehydration hopper. And starting the vacuumizing device, controlling the gauge pressure of an inlet of the vacuumizing device to be-30 kPa to-50 kPa, and accelerating the primary removal of the liquid dung in the cow dung. The liquid dung of the cow dung separated by the vacuum extractor enters a liquid dung circulating pool for preliminary sedimentation. Pumping part of clear liquid at the upper part of the liquid dung circulating pool to a low-temperature hydrolysis device through a liquid dung circulating pump, and adjusting the water content and the pH value of cow dung in the low-temperature hydrolysis device; and the bottom sludge and the rest clear liquid in the liquid dung circulating pool are discharged through a sewage discharge pipe.
After pre-dehydration, the excrement in the pre-dehydration hopper enters an inner cylinder of the drying device through a spiral conveying device, is in direct contact with hot circulating air in a reverse flow manner in the inner cylinder, and is in indirect heat transfer with the circulating hot air in the annular cavity on the wall surface of the inner cylinder. The drying inner cylinder of the drying device rotates around the axis direction, and the rotating speed of the drying inner cylinder is controlled, so that the cow dung stays for 0.5-0.7 hour. The ratio of the volume flow rate of the hot air of the drying inner cylinder to the annular cavity is 1.5:1 to 2.5: 1. The moisture content of the dried solid excrement can be controlled to be 5% -15%, and the obtained dried solid excrement is subjected to component detection, wherein main nutritional components are not lost.
Example 3
The embodiment provides a low-temperature hydrolysis drying process, and the system provided by the embodiment 1 is adopted, wherein the raw material is fresh pig manure, and the water content of the pig manure is 70-85%.
Adding acetic acid into the low-temperature hydrolysis device, and controlling the pH value to be 4.8-5.3. The temperature of the circulating hot air at the outlet of the air heater is controlled to be 185-212 ℃, and the flow of the circulating fan is controlled to ensure that the temperature of the feces in the low-temperature hydrolysis device is 105-160 ℃. Controlling the retention time of the excrement in the low-temperature hydrolysis device to be 0.8-1.3 hours.
And opening a valve at the bottom of the low-temperature hydrolysis device to allow the hydrolyzed pig manure to flow into a pre-dehydration hopper. And starting the vacuumizing device, and controlling the gauge pressure of an inlet of the vacuumizing device to be-30 kPa to-50 kPa to accelerate the primary removal of the liquid dung in the pig manure. The liquid dung of the pig manure separated by the vacuum extractor enters a liquid dung circulating pool for preliminary sedimentation. Pumping part of clear liquid at the upper part of the liquid dung circulating pool to a low-temperature hydrolysis device through a liquid dung circulating pump, and adjusting the water content and the pH value of the pig manure in the low-temperature hydrolysis device; and the bottom sludge and the rest clear liquid in the liquid dung circulating pool are discharged through a sewage discharge pipe.
After pre-dehydration, the excrement in the pre-dehydration hopper enters an inner cylinder of the drying device through a spiral conveying device, is in direct contact with hot circulating air in a reverse flow manner in the inner cylinder, and is in indirect heat transfer with the circulating hot air in the annular cavity on the wall surface of the inner cylinder. The drying inner cylinder of the drying device rotates around the axis direction, and the rotating speed of the drying inner cylinder is controlled, so that the pig manure stays for 0.3-0.6 hour. The ratio of the volume flow rate of the hot air of the drying inner cylinder to the annular cavity is 1.5:1 to 2.5: 1. The water content of the dried solid excrement can be controlled to be 1% -10%, and the obtained dried solid excrement is subjected to component detection, wherein main nutritional components are not lost.
Example 4
The embodiment provides a low-temperature hydrolysis drying process, and the system provided in embodiment 1 is adopted, wherein the raw material is fresh chicken manure, and the water content of the chicken manure is 75% -90%. Adding acetic acid into the low-temperature hydrolysis device, and controlling the pH value to be 4.8-5.3. The temperature of the circulating hot air at the outlet of the air heater is controlled to be 180-205 ℃, and the flow of the circulating fan is controlled to ensure that the temperature of the excrement in the low-temperature hydrolysis device is 105-160 ℃. Controlling the retention time of the excrement in the low-temperature hydrolysis device to be 0.9-1.2 hours.
And opening a valve at the bottom of the low-temperature hydrolysis device to allow the hydrolyzed chicken manure to flow into a pre-dehydration hopper. And starting the vacuumizing device, and controlling the gauge pressure of an inlet of the vacuumizing device to be-30 kPa to-50 kPa to accelerate the primary removal of the liquid dung in the chicken manure. The liquid dung of the pig manure separated by the vacuum extractor enters a liquid dung circulating pool for preliminary sedimentation. Pumping part of clear liquid at the upper part of the liquid dung circulating pool to a low-temperature hydrolysis device through a liquid dung circulating pump, and adjusting the water content and the pH value of cow dung in the low-temperature hydrolysis device; and the bottom sludge and the rest clear liquid dung in the liquid dung circulating pool are discharged through a discharge pipe.
After pre-dehydration, the excrement in the pre-dehydration hopper enters an inner cylinder of the drying device through a spiral conveying device, is in direct contact with hot circulating air in a reverse flow manner in the inner cylinder, and is in indirect heat transfer with the circulating hot air in the annular cavity on the wall surface of the inner cylinder. The drying inner cylinder of the drying device rotates around the axis direction, and the rotating speed of the drying inner cylinder is controlled, so that the chicken manure stays for 0.6-1.0 hour. The ratio of the volume flow rate of the hot air of the drying inner cylinder to the annular cavity is 1.5:1 to 2.5: 1. The water content of the dried solid excrement can be controlled to be 1% -10%, and the obtained dried solid excrement is subjected to component detection, wherein main nutritional components are not lost.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. The low-temperature hydrolysis drying process is characterized by comprising the following steps of:
s1: adding organic acid into the livestock manure for low-temperature hydrolysis;
s2: vacuumizing the livestock manure hydrolyzed at low temperature, and dehydrating in the first step;
s3: and drying the feces dehydrated in the first step by using hot air to perform dehydration in a second step.
2. The process as claimed in claim 1, wherein the low temperature hydrolysis in step S1 is hydrolysis under acidic condition by adding organic acid into livestock and poultry manure.
3. The process as claimed in claim 2, wherein the hydrolysis pH is 4-6, the hydrolysis temperature is 60-180 ℃, the pressure is 1bar-20bar, and the hydrolysis time is 0.5-2 hours.
4. The process as claimed in any one of claims 1 to 3, wherein the temperature of the hot air in step S3 is 110-220 ℃.
5. The low-temperature hydrolysis drying system is characterized by comprising a low-temperature hydrolysis device, a vacuumizing device and a drying device, wherein exhausted gas in the low-temperature hydrolysis device is heated by a heating device and then enters the drying device for drying.
6. The dehydration system according to claim 5, further comprising a pre-dehydration hopper, wherein the livestock manure enters the pre-dehydration hopper after being hydrolyzed in the low-temperature hydrolysis device, an outlet of the pre-dehydration hopper is connected with a vacuum pumping device, the livestock manure is subjected to solid-liquid separation through vacuum pumping, and the solid manure enters the drying device and is dried by hot air.
7. The dewatering system according to claim 6, further comprising a cyclone separator and a condenser, wherein after the hot air exhausted from the drying device is subjected to gas-solid separation by the cyclone separator, the gas is subjected to condensation water exhausted from the condenser and then circulated into the low-temperature hydrolysis device for heating, and the solid is circulated into the drying device for drying again.
8. The dewatering system of claim 7, further comprising a liquid manure circulation tank and a liquid manure circulation pump, wherein the liquid manure circulation tank is used for collecting the liquid separated by the vacuum extractor and the water condensed by the condenser, and the liquid manure circulation pump is used for feeding the water into the low-temperature hydrolysis device for water supplement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111216709.1A CN113896400A (en) | 2021-10-19 | 2021-10-19 | Low-temperature hydrolysis drying process system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111216709.1A CN113896400A (en) | 2021-10-19 | 2021-10-19 | Low-temperature hydrolysis drying process system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113896400A true CN113896400A (en) | 2022-01-07 |
Family
ID=79192960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111216709.1A Pending CN113896400A (en) | 2021-10-19 | 2021-10-19 | Low-temperature hydrolysis drying process system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113896400A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62251000A (en) * | 1986-04-25 | 1987-10-31 | Takatoshi Sakai | Vacuum drier for night soil |
| KR19990024084A (en) * | 1998-12-02 | 1999-03-25 | 김홍진 | Livestock wastewater and manure treatment method and device |
| JP2002273482A (en) * | 2001-03-22 | 2002-09-24 | Kurita Water Ind Ltd | Method and equipment for treating human waste and/or sludge in septic tank |
| DE102007053212A1 (en) * | 2007-05-22 | 2008-12-04 | Spaleck Oberflächentechnik GmbH & Co. KG | Drying of solid portions from the separation of fermentation remainders of a biogas plant and/or of liquid manure, comprises supplying an exhaust gas flow into a drying mechanism having the solid portions, and drying the solid portions |
| US20090283397A1 (en) * | 2006-09-23 | 2009-11-19 | Ichiro Kato | Organic waste treatment system |
| JP2010235360A (en) * | 2009-03-31 | 2010-10-21 | Sumitomo Osaka Cement Co Ltd | Method of manufacturing fertilizer and fertilizer |
| JP2010284589A (en) * | 2009-06-11 | 2010-12-24 | The Carbon Kk | Waste disposal system |
| US20140251902A1 (en) * | 2013-03-06 | 2014-09-11 | Cambi Technology As | Method and device for thermal biological breakdown and dewatering of biomass |
| CN104177145A (en) * | 2014-09-03 | 2014-12-03 | 广西博世科环保科技股份有限公司 | Thermal hydrolysis and high-temperature aerobic composting treatment process of organic solid wastes |
| CN104230136A (en) * | 2014-10-09 | 2014-12-24 | 邓立新 | Sludge pyrohydrolysis joint vacuum flashing dehydration treatment method |
| CN106518183A (en) * | 2016-11-07 | 2017-03-22 | 江苏理工学院 | Method for preparation of organic fertilizer from organic solid waste |
| US20170240478A1 (en) * | 2014-10-17 | 2017-08-24 | Massai Giordano S.R.L. | Plant and method for treatment of poultry manure |
-
2021
- 2021-10-19 CN CN202111216709.1A patent/CN113896400A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62251000A (en) * | 1986-04-25 | 1987-10-31 | Takatoshi Sakai | Vacuum drier for night soil |
| KR19990024084A (en) * | 1998-12-02 | 1999-03-25 | 김홍진 | Livestock wastewater and manure treatment method and device |
| JP2002273482A (en) * | 2001-03-22 | 2002-09-24 | Kurita Water Ind Ltd | Method and equipment for treating human waste and/or sludge in septic tank |
| US20090283397A1 (en) * | 2006-09-23 | 2009-11-19 | Ichiro Kato | Organic waste treatment system |
| DE102007053212A1 (en) * | 2007-05-22 | 2008-12-04 | Spaleck Oberflächentechnik GmbH & Co. KG | Drying of solid portions from the separation of fermentation remainders of a biogas plant and/or of liquid manure, comprises supplying an exhaust gas flow into a drying mechanism having the solid portions, and drying the solid portions |
| JP2010235360A (en) * | 2009-03-31 | 2010-10-21 | Sumitomo Osaka Cement Co Ltd | Method of manufacturing fertilizer and fertilizer |
| JP2010284589A (en) * | 2009-06-11 | 2010-12-24 | The Carbon Kk | Waste disposal system |
| US20140251902A1 (en) * | 2013-03-06 | 2014-09-11 | Cambi Technology As | Method and device for thermal biological breakdown and dewatering of biomass |
| CN104177145A (en) * | 2014-09-03 | 2014-12-03 | 广西博世科环保科技股份有限公司 | Thermal hydrolysis and high-temperature aerobic composting treatment process of organic solid wastes |
| CN104230136A (en) * | 2014-10-09 | 2014-12-24 | 邓立新 | Sludge pyrohydrolysis joint vacuum flashing dehydration treatment method |
| US20170240478A1 (en) * | 2014-10-17 | 2017-08-24 | Massai Giordano S.R.L. | Plant and method for treatment of poultry manure |
| CN106518183A (en) * | 2016-11-07 | 2017-03-22 | 江苏理工学院 | Method for preparation of organic fertilizer from organic solid waste |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070254089A1 (en) | Method and apparatus for the treatment of byproducts from ethanol and spirits production | |
| CN105000779B (en) | Blue alga processing method | |
| JP2007506536A (en) | Biogas production facility by anaerobic hydrolysis | |
| CN108249733B (en) | Low-energy-consumption municipal sludge heat treatment dehydration device and method | |
| KR20100055192A (en) | Sludge drying system | |
| CN111333304A (en) | Integrated treatment method and system for sludge | |
| CN102515466B (en) | Continuous thermal hydrolysis pretreatment process capable of reinforcing high temperature anaerobic fermentation of residual sludge | |
| CN203048755U (en) | Steam heat-cycling sludge drying system | |
| CN103843971A (en) | Method for preparing single-cell protein powder from biological slurry | |
| CN113896400A (en) | Low-temperature hydrolysis drying process system | |
| CN110040937A (en) | A kind of heat pump low temperature sludge drying system | |
| WO2024037444A1 (en) | Sludge dewatering system and use thereof | |
| CN105174683A (en) | Sludge reduction combined treatment system and method | |
| CN109231331B (en) | CO removal of sludge digestion biogas slurry2Special deamination device and process | |
| CN111423097A (en) | Biomass quality-based utilization system and method based on hydrothermal technology | |
| CN105016595B (en) | Modular sludge thermal hydrolytic treatment device and method | |
| CN101717175B (en) | Constant-pressure muggy gasification and pyrolysis conditioning method of sludge in sewage plant | |
| CN110877953A (en) | Reaction system for sludge resource utilization | |
| CN110436720A (en) | A kind of recycling treatment system and its processing method of feces of livestock and poultry | |
| CN212610195U (en) | Sludge three-section type dehydration and drying system in domestic sewage treatment plant | |
| JPS61120699A (en) | Treatment of organic sludge | |
| CN214571590U (en) | Equipment for producing fulvic acid by fermenting culture waste liquid | |
| CN214571449U (en) | System for handle organic sludge | |
| CN213569968U (en) | High-efficient beasts and birds are bred sewage pretreatment device | |
| CN212222775U (en) | Energy-saving sludge treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220107 |