KR101599989B1 - Drying and fermenting apparatus for sludge - Google Patents
Drying and fermenting apparatus for sludge Download PDFInfo
- Publication number
- KR101599989B1 KR101599989B1 KR1020150130216A KR20150130216A KR101599989B1 KR 101599989 B1 KR101599989 B1 KR 101599989B1 KR 1020150130216 A KR1020150130216 A KR 1020150130216A KR 20150130216 A KR20150130216 A KR 20150130216A KR 101599989 B1 KR101599989 B1 KR 101599989B1
- Authority
- KR
- South Korea
- Prior art keywords
- air
- sludge
- hot water
- sludge cake
- hot
- Prior art date
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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
-
- B01F13/00—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
- F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
- F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Food Science & Technology (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
The present invention relates to a sludge fermentation drying apparatus, and more particularly, to a sludge fermentation drying apparatus that is capable of drastically reducing a water content by fermenting and drying a sludge cake such as bottom / wastewater, debris, and the like dehydrated first through a centrifugal dehydrator through hot water and warm air And a sludge fermentation drying device configured to significantly reduce the cost of the sludge treatment by reducing the volume of the sludge cake.
Most of the sludge such as waste water, waste water, and debris generated in the home, industrial site, agriculture and livestock farming site, food processing facility, etc. is dehydrated after the chemical agglomeration and discharged to the high moisture content sludge cake around 80% Although the energy cost for the operation of the treatment facility is excessive, there is no realistic technology to install and operate a facility with high facility cost or high operation cost.
In general, sludge disposal costs account for a large portion of the sewage / wastewater treatment costs. For example, in sewage terminal treatment plants, approximately one-fifth or more of total operating costs are spent for sludge disposal costs. Therefore, it is an important task to reduce sludge disposal cost in order to reduce the waste water treatment cost. Among the sludge disposal costs, most of the transportation costs and disposal of cakes (dehydrated concentrated sludge) are due to disposal treatment.
Conventional sludge treatment facilities are regarded as a kind of waste treatment facility, and not only enormous amount of energy is consumed in operation of treatment facilities, but also harmful factors such as odor, leachate, dust, By polluting the environment, it becomes a cause of complaints. In addition, by treating recyclable resources as wastes, it also goes against the national policy of resource recycling.
Here, the sludge disposal ratio is closely related to the water content. When the water content is lowered, the amount of cake generation is decreased. If the moisture content is less than 10% by weight, the organic matter contained in the sewage can be recycled, and the processing cost of the sludge cake treatment can be reduced.
On the other hand, in the case of the sludge treatment method developed so far, most of them use the method of heating and drying through microwave and direct heating. Since it is necessary to heat for a long time, the heat loss is large and the electricity cost is large. In addition, it is not only necessary to feed the dried product to the livestock, but also it may lead to lethal salt poisoning. In the case of fertilizing the soil, salt accumulation or decaying decomposition due to the decolorizing bacteria occurs and the sickness of the crop is deepened, There is a problem that secondary pollution is generated.
Accordingly, it is urgently required to develop a device capable of preventing environmental contamination due to treatment of sludge by effectively treating waste materials containing a large amount of moisture such as sludge cake, and solving the problems of the conventional sludge disposal method .
The present invention relates to a fermentation drying method for treating a sludge cake, which comprises fermenting and drying a sludge cake such as bottom / wastewater and debris, which is first dehydrated through a centrifugal dehydrator, through hot water and warm air, Thereby reducing the volume of the sludge cake, thereby significantly reducing the cost of the sludge treatment.
It is an object of the present invention to provide a sludge cake supply apparatus, comprising a sludge cake supply unit configured to sequentially supply a sludge cake such as waste water, debris, and the like, which is first dehydrated through a centrifugal dehydrator, The sludge cakes are supplied to the sludge cake supplying part and the sludge cakes. The sludge cakes are supplied to the sludge cake supplying part, And the sludge cake is filled with hot water to heat the sludge cake inside the case to heat the sludge cake. The sludge cake is fermented on one side of the sludge cake, A hot water inlet is formed and a hot water outlet is formed on the other side A hot water tank for supplying hot water supplied from the hot water generator to the inside of the hot water generator through the hot water inlet and then discharged through a hot water outlet; And an air heating pipe connected to the other side of the case to supply heated air supplied from the air heating pipe to the outside of the case, A drying unit including a warm air inlet pipe configured to be poured into the case to dry the sludge cake inside the case and a hot air discharge pipe connected to one side of the case to discharge the heated air introduced into the case; A heating pipe, a warm air inlet pipe and a hot air outlet pipe, and is supplied from the air heating pipe In opened by the air in the hot air injection pipe and provide a fermented sludge drying apparatus for the air discharged through the hot air discharge pipe characterized in that configured to include a blowing means consisting of the recycled hot air injection pipe can be achieved.
The sludge fermentation drying apparatus according to the present invention transfers sludge cake such as bottom / wastewater, debris, and the like, which have been dehydrated through a centrifugal dehydrator, to the inside of the case while being heated through hot water of the fermented hot water tank, Since the water content is drastically reduced by fermentation and drying through the air, the cost of the sludge treatment can be remarkably reduced.
In addition, since the sludge cake is fermented and dried, the organic waste can be fermented and dried to be used as a raw material for livestock feed and raw materials or organic compost. In addition, since carbonization does not occur during the fermentation drying process, There is an effect that environmental pollution does not occur.
1 is a schematic view of a sludge fermentation drying apparatus according to the present invention,
2 is a schematic view showing an enlarged view of a main part of a sludge fermentation drying apparatus according to the present invention,
3 and 4 are views for explaining stirring pieces and shredding pieces in the sludge fermentation drying apparatus according to the present invention,
5 is a view for explaining a blowing means in the sludge fermentation drying apparatus according to the present invention,
6 is a view for explaining a water eliminator in the sludge fermentation drying apparatus according to the present invention.
Hereinafter, a sludge fermentation drying apparatus according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of a sludge fermentation and drying apparatus according to the present invention, FIG. 2 is a schematic view showing a major part of a sludge fermentation drying apparatus according to the present invention, and FIGS. 3 and 4 are sludge fermentation FIG. 5 is a view for explaining a blowing means in the sludge fermentation drying apparatus according to the present invention. FIG.
The present invention is installed at the rear end of the centrifugal dehydrator. As described above, the bottom / waste water and the debris primarily dehydrated through the centrifugal dehydrator are discharged to a high moisture content sludge cake having a water content of about 80%. The sludge cake having a high moisture content is used for the fermentation drying apparatus according to the present invention And fermented and dried through hot water and warm air, and the water content is reduced to 10% by weight or less.
1 and 2, a sludge fermentation drying apparatus according to the present invention includes a sludge
The sludge
The
The stirring and conveying means 300 is configured to convey the sludge cake S injected into the
The
The driving
The conveying
The
As shown in FIG. 3, the crushing
4, it is preferable that the crushing grooves 352-1, 352-2, and 253-3 between the crushing
The fermented
The drying unit 500 supplies the heated air into the
Here, the
The air blowing means 600 is installed between the
5, the
In the sludge fermentation drying apparatus according to the present invention, the sludge cake such as bottom / wastewater, debris, and the like, which is dehydrated first through the centrifugal dehydrator, is transferred through the case while being heated through hot water and hot water in the fermented hot water tank, The fermentation and drying can be carried out through the heated air, and the water content can be drastically reduced. Therefore, the cost of the sludge treatment can be remarkably reduced.
In addition, since the sludge cake is fermented and dried, the organic waste can be fermented and dried to be used as a raw material for livestock feed and raw materials or organic compost. In addition, since carbonization does not occur during the fermentation drying process, There is an advantage that environmental pollution does not occur.
A
6, the
That is, the
Therefore, since water is sequentially removed while moving the
100: sludge cake supply part 200: case
300: stirring and conveying means 400: fermentation hot water tank
500: drying unit 600: blowing means
700: Moisture eliminator
Claims (4)
A case having a closed structure in which a space through which a sludge cake can be conveyed is formed, an inlet through which the sludge cake supplied from the sludge cake supply part is inserted and a discharge port through which the sludge cake is discharged is formed on the other side,
A stirring and conveying means for stirring and conveying the sludge cake introduced into the inlet port to the discharge port side,
The hot water inlet is formed at one side of the outer surface of the case and the hot water outlet is formed at the other side of the case. A hot water tank for hot water supplied from the hot water generator through the hot water inlet and then discharged through a hot water outlet;
An air heating tube having an air inlet formed at one end thereof for introducing outside air into the fermented hot water tank and being discharged to the outside so as to heat and supply the introduced air through heat exchange with hot water in the fermented hot water tank; A hot air inlet pipe connected to the other side of the case to supply heated air supplied from the air heating pipe to the inside of the case to dry the sludge cake inside the case; A drying unit comprising a hot air discharge pipe for discharging the introduced heated air,
The hot air supply tube is installed between the air heating tube, the hot air inlet tube and the hot air outlet tube, and the heated air supplied from the air heating tube is introduced into the hot air inlet tube, and the air discharged through the hot air outlet tube is circulated to the hot air inlet tube And an air blowing means,
The agitating and conveying means includes a rotary drum installed in the case so as to be long in the longitudinal direction and rotatably installed therein, a driving means for rotating the rotary drum, a sludge cake provided in a spiral shape on the outer peripheral surface of the rotary drum, And a conveying screw for conveying the sludge cake to the discharge port side and a conveyance screw for conveying the sludge cake to the lower side of the case at predetermined intervals along a line such as the trajectory of the conveyance screw, And a plurality of pulverizing blades are concavely arranged in a shape of "V" on the lower side of the stirring member, so that sludge flowing down from the stirring blade passes through the pulverizing groove between the pulverizing blades, Wherein the crushing grooves between the crushing blades are formed in the rotating drum And a crushing piece which is formed so that its width becomes wider toward the rear end portion,
The air heating pipe inserted into the fermented hot water tank is spirally wound many times inside the fermented hot water tank so that the air moving in the air heating pipe can be heat exchanged with the hot water in the fermented hot water tank for a long time ,
And a water eliminator for removing moisture from the air discharged through the hot air discharge pipe is provided between the hot air discharge pipe and the blower means. The water eliminator has an air inlet connected to the hot air discharge pipe at one side of the upper side, And upper and lower rib plates are formed on the upper and lower surfaces of the body, respectively. The upper and lower rib plates are spaced apart from each other by a predetermined distance so that the air is guided from the air inlet to the air outlet side, And a drain portion formed at a lower portion of the main body and collecting and discharging moisture discharged from the air flowing through the discharge hole communicating with the main body.
The blowing means,
A blower connected to the hot air discharge pipe for blowing air discharged to the hot air discharge pipe,
A supply port connected to the blower for supplying air to be used as a power source; a suction port connected to the air heating pipe for sucking the heated air; an air inlet connected to the hot air inlet pipe, And a nozzle for generating a negative pressure such that the air heated by the suction port can be sucked by using the gas energy of the air which is installed in front of the supply port and introduced into the supply port, Wherein the sludge fermentation drying apparatus further comprises:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150130216A KR101599989B1 (en) | 2015-09-15 | 2015-09-15 | Drying and fermenting apparatus for sludge |
Applications Claiming Priority (1)
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KR1020150130216A KR101599989B1 (en) | 2015-09-15 | 2015-09-15 | Drying and fermenting apparatus for sludge |
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KR101599989B1 true KR101599989B1 (en) | 2016-03-07 |
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KR1020150130216A KR101599989B1 (en) | 2015-09-15 | 2015-09-15 | Drying and fermenting apparatus for sludge |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108613536A (en) * | 2018-05-25 | 2018-10-02 | 北京未森绿色科技有限公司 | A kind of roller pneumatic drier |
CN110201945A (en) * | 2019-06-25 | 2019-09-06 | 周华春 | A kind of processing of crude drugs all-in-one multifunctional machine |
KR102086720B1 (en) | 2018-09-13 | 2020-03-11 | (주) 세종이엠씨 | Device to ferment sewage sludge |
KR102097469B1 (en) * | 2018-10-25 | 2020-04-07 | 한국기계연구원 | Combustion gas recirculation device |
KR20200057226A (en) * | 2018-11-16 | 2020-05-26 | 한국산업기술시험원 | Double heat exchanger and sewage sludge dryer using the same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19980065256A (en) * | 1997-01-06 | 1998-10-15 | 유인상 | Organic Waste Fermentation Dryer and Fermentation Drying Method |
KR20070049308A (en) * | 2005-11-08 | 2007-05-11 | 조병완 | Closed circulation type drying method and apparatus |
KR101018416B1 (en) * | 2007-09-20 | 2011-03-02 | 명원환경 주식회사 | The equipment to recycle sludge from sewage and wastewater |
KR101431049B1 (en) * | 2014-05-08 | 2014-08-22 | 효림산업주식회사 | sedimentation basin manifold type sludge collecting and discharging apparatus |
-
2015
- 2015-09-15 KR KR1020150130216A patent/KR101599989B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19980065256A (en) * | 1997-01-06 | 1998-10-15 | 유인상 | Organic Waste Fermentation Dryer and Fermentation Drying Method |
KR20070049308A (en) * | 2005-11-08 | 2007-05-11 | 조병완 | Closed circulation type drying method and apparatus |
KR101018416B1 (en) * | 2007-09-20 | 2011-03-02 | 명원환경 주식회사 | The equipment to recycle sludge from sewage and wastewater |
KR101431049B1 (en) * | 2014-05-08 | 2014-08-22 | 효림산업주식회사 | sedimentation basin manifold type sludge collecting and discharging apparatus |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108613536A (en) * | 2018-05-25 | 2018-10-02 | 北京未森绿色科技有限公司 | A kind of roller pneumatic drier |
KR102086720B1 (en) | 2018-09-13 | 2020-03-11 | (주) 세종이엠씨 | Device to ferment sewage sludge |
KR102097469B1 (en) * | 2018-10-25 | 2020-04-07 | 한국기계연구원 | Combustion gas recirculation device |
KR20200057226A (en) * | 2018-11-16 | 2020-05-26 | 한국산업기술시험원 | Double heat exchanger and sewage sludge dryer using the same |
KR102210153B1 (en) | 2018-11-16 | 2021-02-01 | 한국산업기술시험원 | Double heat exchanger and sewage sludge dryer using the same |
CN110201945A (en) * | 2019-06-25 | 2019-09-06 | 周华春 | A kind of processing of crude drugs all-in-one multifunctional machine |
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