KR100752704B1 - Dehydrate method and natural dehydrate machine of wastes - Google Patents

Abstract

The present invention collects and transports organic wastes, such as food waste, so that the organic wastes introduced in the recycling (pretreatment) facility of organic wastes are stored together with sawdust in the hopper, and also oxygen is supplied into the hoppers of the organic wastes. , Dehydration through the drain pipe, supplying oxygen into the hopper to increase the efficiency of the aeration function to minimize the contamination of the desorption liquid, and also to prevent the reduction of organic waste of organic waste properly to promote moderate temperature fermentation to promote organic waste composting process It relates to a natural dehydrator of organic waste to increase the efficiency of the organic waste storage hopper 10 and the organic waste storage hopper 10, the organic waste storage hopper is stored, and the organic waste storage hopper 10 is installed In the filtrate collection tank in which the naturally dehydrated filtrate is collected at the bottom, the organic Oxygen ejection pipes 100 connected to the oxygen supply source are installed at equal intervals in the gas storage hopper 10, and a drain pipe 200 for discharging the dehydration liquid of the organic waste between the oxygen ejection pipes 100. Are installed at equal intervals, and the oxygen ejection holes 110 are drilled at equal intervals in the oxygen ejection pipe 100 installed in the organic waste storage hopper 10 to the organic waste in the organic waste storage hopper 10. Oxygen is supplied, and the drain hole 210 is drilled at equal intervals in the drain pipe 200 installed in the organic waste storage hopper 10 so that the dehydration liquid of the organic waste in the organic waste storage hopper 10 is filtered. 20), and the present invention after the sawdust 310 is maintained on the inner wall of the organic waste storage hopper 10, and put the organic waste, the organic waste storage Oxygen is periodically supplied into the organic waste of the hopper 10 to prevent the organic waste of organic waste from being appropriately reduced to promote fermentation, and the dehydration liquid of the organic waste is naturally dropped and dehydrated by the drain pipe 200. The water content of organic waste is minimized so that it can be treated under the allowable load of the sewage treatment plant.

Organic waste storage hopper, oxygen jet pipe, oxygen jet hole, drain pipe, drain hole, filtrate collection tank

Description

Dehydration method and natural dehydrate machine of wastes

1 is a longitudinal sectional view of a natural dehydrator of an organic waste of the present invention,

2 is a plan view of the natural dehydrator of the organic waste of the present invention,

3 is a cross-sectional view of the natural dehydrator of the organic waste of the present invention,

4 is a cross-sectional view taken along the line A-A of FIG.

Explanation of symbols on the main parts of the drawings

10: organic waste storage hopper 20: filtrate collection tank

30: discharge screw 50: punched plate

51 hole 100 oxygen blowing pipe

110: oxygen ejection hole 120: connection pipe

200: drain pipe 210: drain hole

300: sawdust holding member 310: sawdust

The present invention relates to a natural dehydrator of organic wastes in which organic wastes are naturally dehydrated in an organic waste storage hopper to reduce the water content of organic wastes. More specifically, organic wastes are collected by transporting organic wastes such as food waste. (Pretreatment) The organic wastes carried in the equipment are stored together with sawdust in the hopper, and oxygen is supplied into the hopper of the organic wastes, and dehydrated through the drain pipe, thereby aeration function by supplying oxygen into the hopper. It is possible to minimize the contamination of the desorption liquid by increasing the efficiency of the organic waste, and also to prevent the organic waste of organic waste appropriately to promote the moderate temperature fermentation to increase the efficiency of the organic waste composting process of the organic waste natural dehydrator.

In general, organic wastes such as food waste require a series of pretreatment processes such as dehydration and drying from organic waste storage hoppers for recycling to compost or feed, and dehydration (including leachate) occurs in most processes including dehydration. However, the BOD, COD, and SS content of this dehydration solution is so high that a separate wastewater treatment facility should be provided. However, since the wastewater treatment facility itself is more expensive than the cost of food pretreatment facilities, the initial facility investment is excessive. There is a problem that the installation area is large, and a large installation site is required.

In general, the water content of organic wastes collected and collected is about 88 ~ 90%, and the water content is 85% before and after the high-water sludge or the process for treating organic wastes. However, belt conveyor has a problem of contaminating the surrounding area due to high water content and consequently degrading the surrounding area. Also, screw conveyor also returns the organic waste or high content sludge solids as the water is filled at the lower part. Phenomenon occurs.

In addition, as a method for controlling the moisture content of the organic waste treatment, forced desorption using a screw press and a centrifugal dehydrator deteriorates the water quality of the desorption liquid, which can excessively increase the load during the sewage treatment plant-linked treatment. The situation is that the first treatment of wastewater is required below the allowable load of the treatment plant.

However, the primary treatment of organic waste stripping liquid has not found an economical method in terms of installation and operating costs. Moreover, in the case of screw press, the transfer efficiency due to the forced transfer is excellent, but the water content is not reduced during transfer, and if the blockage occurs in the pipe, repair or interruption of the entire pipe is inevitable, and the capacity of the dehydration facility is increased more than necessary. The question arises.

The present invention is to solve the above problems, it adopts a natural dehydration method, not forced dehydration, desorption method, and dehydration filtrate is naturally discharged to the filtrate through the drain pipe with the periodic supply of oxygen to the organic waste in the hopper It is possible to minimize the contamination of the desorption liquid by increasing the efficiency of the aeration function by supplying oxygen into the hopper, and also to promote fermentation by appropriately preventing the reduction of organic matter of organic waste. In addition, the present invention can prevent the deterioration of water quality due to forced dehydration of organic waste by natural dehydration, and also to minimize the water content of organic waste and increase the load of the sewage treatment plant due to the first treatment of wastewater below the allowable load of the sewage treatment plant. The purpose is to make it work.

The present invention provides an organic waste storage hopper for storing organic wastes or high functional sludge, and a filtrate collection tank for collecting naturally dehydrated filtrates under which discharge screws are installed in the organic waste storage hopper, wherein oxygen is stored in the organic waste storage hopper. The basic feature is that the oxygen ejection pipes connected to the source are installed at equal intervals, and the drainage pipes are installed at equal intervals so that the dehydration liquid of organic waste is discharged between the oxygen ejection pipes.

In addition, oxygen ejection holes are drilled at equal intervals in the oxygen ejection pipe installed in the organic waste storage hopper of the present invention so that oxygen is supplied to the organic waste in the organic waste storage hopper, and drained to the drain pipe installed in the organic waste storage hopper. The holes are drilled at equal intervals so that the dehydration of organic waste in the organic waste storage hopper is discharged to the filtrate collection tank.

In addition, the present invention is to maintain the sawdust on the inner wall of the organic waste storage hopper, the organic waste is introduced, and the oxygen is periodically supplied into the organic waste of the organic waste storage hopper, to appropriately reduce the organic waste of organic waste It is possible to promote fermentation, and the dehydration liquid of organic wastes is characterized by the natural dehydration method of organic wastes which are naturally dropped and dehydrated by drainage pipe to minimize the water content of organic wastes and to be treated below the allowable load of the sewage treatment plant.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a longitudinal cross-sectional view of a natural dehydrator of an organic waste of the present invention, and FIG. 2 is a plan view of a natural dehydrator of an organic waste of the present invention, and FIG. 3 is a cross-sectional view of a natural dehydrator of an organic waste of the present invention. 4 is a cross-sectional view taken along the line AA of FIG. 2.

The organic waste storage hopper 10 of the present invention injects organic waste transported by a vehicle such as a truck into a hopper to discharge oxygen and leachate of organic waste into the filtrate collection tank 20.

In particular, the present invention, the organic waste storage hopper 10, which stores organic waste or high functional sludge, is provided with a discharge screw 30 is connected to the drive source (not shown) in the bottom, the discharge screw 30 At the bottom of the filter, a filtrate collection tank 20 is formed in which the dehydrated filtrate of the organic waste in the organic waste storage hopper 10 is naturally dehydrated.

1 and 4, the perforated plate 50 formed by opening the holes 51 at equal intervals is formed below the discharge screw 30, and the filtrate collects the filtrate through the perforated plate 50. Is collected.

In addition, the filtrate collection tank 20 is connected to the transfer pipe 21, the transfer pipe 21 is connected to the filtrate storage tank (not shown), to move the filtrate to the filtrate storage tank (not shown).

In addition, the transfer screw conveyor 40 is connected to the discharge screw 30 to transfer the organic dehydrated organic waste to the next process.

1 to 4, the organic waste storage hopper 10 in which organic waste or high functional sludge is stored, and the discharge screw 30 in the organic waste storage hopper 10 are installed in the lower portion. In the organic waste storage hopper 10 in the dehydrator consisting of the filtrate collection tank 20 in which the dehydrated filtrate is collected, oxygen ejection pipes 100 connected to an oxygen supply source are installed at equal intervals, and the oxygen ejection pipe The drain pipes 200 are installed at equal intervals so that the dehydration liquid of the organic waste is discharged between the (100).

That is, the oxygen ejection holes 110 are drilled at equal intervals in the oxygen ejection pipe 100 installed in the organic waste storage hopper 10 of the present invention so that oxygen is supplied to the organic waste in the organic waste storage hopper 10. .

The supply of oxygen into the organic waste storage hopper 10 can minimize the contamination of the desorption liquid by increasing the efficiency of the aeration function by the supply of oxygen into the hopper.

In addition, drain holes 210 are drilled at equal intervals in the drain pipe 200 installed in the organic waste storage hopper 10 so that the dehydration liquid of organic waste in the organic waste storage hopper 10 is discharged to the filtrate collection tank 20. Will be.

The oxygen ejection pipes 100 may be supplied with oxygen from an oxygen supply source (not shown) through a plurality of oxygen ejection holes 110 at equal intervals in the longitudinal direction, and oxygen may be supplied to the organic waste through the oxygen ejection hole 110. The oxygen from the oxygen supply source is ejected from the bottom through the connecting pipe 120 connected to the bottom of the oxygen ejection pipe 100. The upper portion of the oxygen ejection pipe 100 is closed to allow oxygen to be ejected through the oxygen ejection hole 110.

The oxygen ejection hole 110 may form a protective cover (not shown) or the like around the hole in order to prevent it from being blocked by organic waste.

In addition, by applying heat to the oxygen to prevent the organic waste of the organic waste in the organic waste storage hopper 10 can be promoted to fermentation.

In addition, the drain pipe 200 is a drain hole 210 is drilled at equal intervals on the circumferential surface so that the dehydration liquid of the organic waste in the organic waste storage hopper 10 is discharged. The dehydration filtrate is naturally dehydrated to the bottom of the organic waste storage hopper 10 through the drain hole 210, the filtrate collection tank through the hole 51 of the perforated plate 50 below the discharge screw 30 (20).

In order to prevent the drainage hole 210 of the drainage pipe 200 from being blocked by organic waste, a protective cover (not shown) may be formed around the hole.

In addition, the oxygen ejection pipes 100 and the drainage pipes 200 are held and fixed by the fixing bracket 60 so that they can be installed stably in the organic waste storage hopper 10.

In addition, sawdust holding members 300 are formed on the inner wall of the organic waste storage hopper 10 so that the organic waste storage hopper 10 may be disposed before the organic waste is stored in the organic waste storage hopper 10. Sawdust is formed on the inner wall of the to facilitate the discharge of the dehydration liquid contained in the organic waste.

The sawdust holding member 300 is not particularly limited and may be any shape in which sawdust may be maintained in the organic waste storage hopper 10. In addition, the sawdust is advantageous to be necessarily installed in the bottom portion of the organic waste storage hopper 10 because it facilitates the discharge of the dehydration liquid contained in the organic waste.

In addition, the desorption liquid after the natural dehydration is sent to a water purifier to purify and discharged.

Experimental Example

According to the present invention, after the sawdust 310 is maintained on the inner wall of the organic waste storage hopper 10, the organic waste is introduced, and oxygen is periodically supplied into the organic waste of the organic waste storage hopper 10. Fermentation can be promoted by appropriately preventing the reduction of organic matter of the waste, and the dehydration liquid of organic waste can be naturally dropped and dehydrated by the drain pipe 200 to minimize the moisture content of the organic waste so that it can be treated below the allowable load of the sewage treatment plant. .

In the present invention, a natural dehydration and purification apparatus test was performed, not forced desorption, and a relatively satisfactory result was obtained.

In addition, the natural desorption method is expected to be able to promote the fermentation by properly preventing the organic waste of organic waste.

Test method

After mixing the imported organic waste (water content: 82%) with sawdust (water content: about 30%), the moisture content and wastewater phase of organic wastes were collected by using the sample obtained by fermenting the organic waste storage hopper with air supply for 5 days at medium temperature. Was measured.

<LAB TEST>

Equipment input amount: organic waste (83㎏) + sawdust (6.5㎏) = 89.5㎏ (subsidiary material input rate: 7.3%)

Air supply cycle: 1 minute after 5 minutes

Test result

Desorption solution generation (self-measurement)

Pause Generation amount (㎏) Pause Generation amount (㎏) 11/12 (14:00) 3.2 11/13 (09:00) 5.9 11/12 (16:00) 1.4 11/14 (09:30) 2.4 Total (leaching quantity) 12.9 Evaporation amount (㎏) 11.2

Changes in Water Quality of Tally Solution (Test Method; Water Process Test, KB Entec Co., Ltd.)

division Test Items pH CODcr BOD SS N-H (mineral) N-H (Animals) T-N T-P Cl Water content Screw Press (A) Test value (㎏ / ℓ) 4.35 146,000 88,125 61,000 16 12,000 3,864 614.9 5,565.7 73.9 (%) Centrifugal Dehydrator (B) Test value (㎏ / ℓ) 4.27 144,000 76,875 27,100 12 10,500 3,155.2 573.1 5,069.4 66.2 (%) Removal rate - 1.37% 12.8% 55.6% 25.0% 12.5% 18.3% 6.8% 8.9% 10.4% Test Equipment [(A-C) / A] * 100 (%) Test value (㎏ / ℓ) 4.48 38,750 24,000    990 0.8     30 610.8 148.1 2,233.4 67.7 (%) Improvement - 73.5% 72.8% 98.4% 95.0% 99.8% 84.2% 75.9 59.9% 8.4%

  Extract

After crushing Screw presse liquid Centrifugal dewatering solution After 5 days of facility Acid fermentation after filtration

Liquid + Solid Request a test

Water content change of solids (Test Method; Water Process Test, KB Entec Co., Ltd.)

-Water content of food before test: 82%

-Water content after test (about 5 days): 67.7% (Refer to ※ TEST REPORT)

conclusion

As a result of this test, wastewater quality showed more than 70% pollution removal effect for each item, and the water content was adjusted to 68% line to obtain satisfactory results. Future commercialization of this facility (Pilot facility, etc.) and reorganization of organic waste composting process I will push forward.

As described above, the present invention collects and transports organic wastes such as food waste, so that the organic wastes carried in the resource (pretreatment) facility of organic wastes are stored together with sawdust in a hopper, and also oxygen in the hopper of the organic wastes. By supplying oxygen, it is possible to dehydrate through the drain pipe, supplying oxygen into the hopper to increase the efficiency of the aeration function, thereby minimizing the contamination of the desorption liquid, and promoting moderate temperature fermentation by appropriately preventing the reduction of organic waste of organic waste. The efficiency of the waste composting process can be improved.

Claims (3)

In a filtrate collection tank in which an organic waste storage hopper (10) storing organic waste or a high water content sludge and a naturally dehydrated filtrate are collected in a lower portion where the discharge screw (30) is installed in the organic waste storage hopper (10). Oxygen ejection pipes 100 connected to the oxygen supply source are installed at equal intervals in the organic waste storage hopper 10, and drain pipes for discharging the dehydration liquid of organic wastes between the oxygen ejection pipes 100 ( Natural dehydrator of organic waste, characterized in that the 200 is installed at equal intervals. According to claim 1, Oxygen ejection holes 110 are drilled at equal intervals in the oxygen jet pipe 100 installed in the organic waste storage hopper 10 so that oxygen is supplied to the organic waste in the organic waste storage hopper 10. The drain holes 210 are drilled at equal intervals in the drain pipe 200 installed in the organic waste storage hopper 10, and the dehydration liquid of the organic waste in the organic waste storage hopper 10 is discharged to the filtrate collection tank 20. Natural dehydrator, characterized in that the organic waste. After the sawdust 310 is maintained on the inner wall of the organic waste storage hopper 10, the organic waste is introduced, and oxygen is periodically supplied into the organic waste of the organic waste storage hopper 10, so that organic matter of organic waste It is possible to prevent fermentation by appropriately to promote fermentation, and the organic waste dehydration liquid is naturally dropped and dehydrated by the drain pipe 200 to minimize the moisture content of the organic waste to be treated below the allowable load of the sewage treatment plant. Natural Dewatering Method of Waste.

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