KR20000065988A - Dewatering method of sludge and dewaterer - Google Patents
Dewatering method of sludge and dewaterer Download PDFInfo
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- KR20000065988A KR20000065988A KR1019990012797A KR19990012797A KR20000065988A KR 20000065988 A KR20000065988 A KR 20000065988A KR 1019990012797 A KR1019990012797 A KR 1019990012797A KR 19990012797 A KR19990012797 A KR 19990012797A KR 20000065988 A KR20000065988 A KR 20000065988A
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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
- C02F11/15—Treatment of sludge; Devices therefor by de-watering, drying or thickening by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/305—Treatment of water, waste water, or sewage by irradiation with electrons
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
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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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/02—Drying solid materials or objects by processes not involving the application of heat by using ultrasonic vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/14—Drying solid materials or objects by processes not involving the application of heat by applying pressure, e.g. wringing; by brushing; by wiping
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/063—Underpressure, vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Combustion & Propulsion (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
본 발명은 슬러지를 탈수하는 슬러지의 탈수 방법 및 장치에 관한 것으로, 특히 원적외선, 레이저 등의 빛이나 전자파, 초음파를 이용하여 탈수효율을 향상시킬 수 있는 슬러지의 탈수 방법 및 장치에 관한 것이다.The present invention relates to a sludge dewatering method and apparatus for dewatering sludge, and more particularly, to a sludge dewatering method and apparatus for improving dewatering efficiency using light, electromagnetic waves, and ultrasonic waves such as far infrared rays and lasers.
하폐수처리과정에서 발생되는 슬러지는 고형물 농도가 높은 액상이며 부피가 매우 크므로 슬러지의 처리 및 처분은 하폐수 처리에서 매우 중요한 과제이다.The sludge generated in the wastewater treatment process is a liquid with high solids concentration and very large volume, so the treatment and disposal of the sludge is a very important task in the wastewater treatment.
이와 같은 슬러지는 최종처분에 앞서서 수분함량을 감소하기 위하여 농축, 개량, 탈수, 건조 등이 선행된다. 탈수는 슬러지의 함수율을 감소시키는 감량화 공정으로 대표적인 탈수방법으로는 원심분리, 여과탈수, 건조 등이 있다.Such sludge is concentrated, improved, dehydrated, dried, etc. in order to reduce the water content prior to final disposal. Dehydration is a reduction process that reduces the water content of sludge. Typical dehydration methods include centrifugation, filtration dehydration, and drying.
가장 많이 사용되는 여과 탈수 방법은 기계적으로 슬러지에 압력을 가하여 고형물은 여과포로 포집하고 수분을 통과되도록 한다. 대표적인 여과탈수 장치는 연속탈수방식인 벨트프레스(Belt Press)와 회분식 탈수방식인 필터프레스(Filter Press)가 있으며 거의 모든 종류의 슬러지를 효과적으로 탈수할 수 있다.The most common filtration dehydration method is to mechanically pressurize the sludge so that the solids are collected by the filter cloth and passed through the water. Typical filter dewatering devices include belt press (continuous dewatering) and filter press (batch dewatering), which can effectively dewater almost all types of sludge.
그러나, 이와 같은 기존의 탈수방법으로는 고형물 입자와 미생물 세포내의 수분, 세포와 고형물 사이의 간극수 등의 탈수가 어려워 탈수효율이 저조하였다.However, such a conventional dehydration method is difficult to dehydrate, such as water in the solid particles and microbial cells, the number of gaps between the cells and solids, and the dehydration efficiency is low.
탈수효율을 개선하려는 종래의 기술에는 간극수의 제거를 위해 탈수기에 전기장을 걸어주고 전기적인 인력에 의해 물분자가 이동되도록 하는 전해탈수 방법이 사용되었으나, 탈수기본체와 롤러 등이 전해부식되는 문제점이 발생되었다.In the prior art to improve the dewatering efficiency, an electrolytic dehydration method is used to apply an electric field to the dehydrator and to move the water molecules by electrical attraction to remove the pore water, but there is a problem that the dehydration base and the roller are electrolytically corroded. It became.
본 발명은 상기한 문제점을 해소하기 위한 것으로, 슬러지의 간극수나 미생물 세포내의 수분을 효과적으로 배제할 수 있는 탈수 방법 및 장치를 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, and an object thereof is to provide a dewatering method and apparatus capable of effectively excluding sludge gap water and water in microbial cells.
상기한 목적을 달성하기 위한 본 발명의 탈수 방법은 탈수가 시작되기 전 또는 탈수가 진행되는 도중에 슬러지에 원적외선, 레이저 등의 빛이나 전자파 또는 초음파를 가하여 미생물이 세포막을 파괴하거나 가열효과에 의하여 간극수의 점도를 낮추어 유동성을 증대시키거나 진동에 의하여 간극수가 잘 배제될 수 있게 하는 것을 특징으로 하는 탈수 방법으로, 이 방법은 다양한 형태의 탈수 장치에 적용될 수 있다.The dehydration method of the present invention for achieving the above object is applied to the sludge by applying far infrared rays, laser light or electromagnetic waves or ultrasonic waves before dehydration starts or during the dehydration process. Dehydration method characterized by lowering the viscosity to increase the fluidity or to allow the pore water to be well excluded by vibration, this method can be applied to various types of dewatering device.
그리고, 상기한 탈수방법을 적용시킨 본 발명의 탈수 장치는, 다수개의 롤러에 의해 회전하는 두 개의 무한궤도 형태의 여과포에 의하여 슬러지를 중력 및 압축 탈수시키는 벨트프레스 탈수 장치에 적용될 수 있는데, 이러한 장치에 상기 여과포의 어느 부분에 빛이나 전자파 또는 음파를 조사하는 광원 또는 발진기가 구비된 것을 특징으로 하는 것이다.In addition, the dewatering apparatus of the present invention to which the above dewatering method is applied may be applied to a belt press dewatering apparatus for gravity and compression dewatering of sludge by two crawler-type filter cloths rotated by a plurality of rollers. It characterized in that any part of the filter cloth is provided with a light source or an oscillator for irradiating light, electromagnetic waves or sound waves.
즉, 상기 여과포와 롤러에 의하여 슬러지를 중력 및 압축 탈수시키는 종래방식의 벨트프레스에 원적외선, 레이저 등의 빛이나 고주파 전자파 또는 초음파를 슬러지에 조사하는 본 발명에 의한 탈수 방법을 채택하여, 미생물 세포막을 파괴하거나 간극수의 점성을 낮추거나 진동에 의하여 간극수가 잘 배제되도록 하여 슬러지 탈수효율을 향상시키는 본 발명의 목적을 효과적으로 수행할 수 있게 하는 한편, 추가로 진공에 의하여 탈수효율을 증대시킬 수 있게 하는 것이다.That is, by adopting the dewatering method according to the present invention to irradiate the sludge with light such as far infrared rays, lasers or high frequency electromagnetic waves or ultrasonic waves to the conventional belt press for gravity and compression dewatering the sludge by the filter cloth and rollers, It is to be able to effectively carry out the object of the present invention to improve the sludge dewatering efficiency by destroying or lowering the viscosity of the pore water or by removing the pore water well by vibration, while further increasing the dewatering efficiency by vacuum. .
도 1 내지 도 3은 본 발명에 따른 탈수 장치의 일례를 도시한 구성도이다.1 to 3 is a block diagram showing an example of the dewatering device according to the present invention.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
10 : 롤러 12 : 상부여과포10 roller 12 upper filter cloth
14 : 하부여과포 16 : 밀착부14: lower filtration cloth 16: close contact
18 : 슬러지 공급부 20 : 발진기18: sludge supply unit 20: oscillator
22, 24 : 반사경 25 : 배기구22, 24: reflector 25: exhaust port
26 : 탈수여액받이 28 : 누설방지용 롤러26: dehydration liquid receiving 28: leakage prevention roller
29 : 간격 롤러29: gap roller
이하, 본 발명의 구성 및 작용을 첨부된 도면을 참조하여 상세하게 설명한다.Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.
도 1 내지 도 3은 본 발명에 따른 탈수 방법을 적용한 탈수 장치 가운데 벨트프레스에 의한 탈수 장치의 바람직한 실시예를 도시한 것으로, 다공성 천으로 만들어진 무한궤도형 여과포에 의하여 슬러지에 기계적 압력을 가하여 슬러지를 탈수시키는 방법에서, 탈수전 또는 탈수중의 슬러지에 빛이나 전자파 또는 초음파를 가하고 추가하여 여과포의 일부를 진공상태로 유지하는 것을 특징으로 하는 본 발명의 탈수 방법을 이용하는 장치이다.1 to 3 illustrate a preferred embodiment of a dewatering apparatus by a belt press among the dewatering apparatuses to which the dewatering method according to the present invention is applied, by applying mechanical pressure to the sludge by a caterpillar filter cloth made of a porous cloth. In the method of dehydration, a device using the dehydration method of the present invention, wherein a portion of the filter cloth is kept in a vacuum state by adding light, electromagnetic waves or ultrasonic waves to the sludge before or during dehydration.
본 발명의 탈수 장치의 제1실시예인 도 1의 장치는 각각 롤러(10)에 의해 회전되는 두 개의 무한궤도형태의 여과포(12, 14)가 설치되고, 상부여과포(12)의 아랫면과 상기 하부여과포(14)의 윗면이 밀착되는 밀착부(16)를 두어 슬러지 공급부(18)에서 상부여과포(12)의 윗면으로 공급된 슬러지가 1차로 중력 탈수되게 한 다음 상기 롤러(10)의 회전에 의하여 밀착부(16)로 이송되어 압축탈수시키면서 밀착부(16)의 윗면에 고주파 발진기(20)를 두어 상부여과포(12)를 통하여 슬러지에 고주파를 조사하도록 되어 있는 구조이다.1, which is a first embodiment of the dewatering device of the present invention, is provided with two crawler-shaped filter cloths 12 and 14, each of which is rotated by a roller 10, and has a lower surface and an upper surface of an upper filter cloth 12. The sludge supplied from the sludge supply unit 18 to the upper surface of the upper filter cloth 12 is first placed by the upper surface of the filter cloth 14 to be in close contact with the upper surface of the filter cloth 14, and then the roller 10 is rotated by the rotation of the roller 10. The high frequency oscillator 20 is placed on the upper surface of the contact portion 16 while being transported to the contact portion 16 and compressed and dehydrated so as to irradiate the sludge through the upper filter cloth 12.
또한 상기 고주파 발진기(20)에서 발생되는 고주파의 누설을 막으면서 외부에 미치는 악영향을 감소시키고 목표로 하는 조사부위에 집적될 수 있도록 하기 위하여 고주파 발진기(20)의 후면과 여과포의 건너편에 각각 반사경(22, 24)을 두었고, 반사경의 끝부분은 여과포(12, 14)와 밀착되도록 하였으며 여과포(12, 14)와 반사경(22, 24)이 닿는 부분의 마찰을 줄이기 위하여 누설방지용 롤러(28)를 두었다.In addition, in order to reduce the adverse effects on the outside while preventing the leakage of the high frequency generated by the high frequency oscillator 20 and to be integrated in the target irradiation site, the reflector ( 22, 24), the tip of the reflector is to be in close contact with the filter cloth (12, 14) and to prevent the friction between the contact between the filter cloth (12, 14) and the reflector (22, 24) to prevent the leakage roller (28) Put it.
즉, 본 발명에 따른 탈수 장치의 구조는 무한궤도형태의 여과포와 다수개의 롤러(10)에 의해 여과탈수되는 탈수장치에 고주파 발진기(20)를 두어 탈수의 효율을 개선하는 것이다. 또한 상기 발진기는 고주파에 국한되지 않으며 레이저 또는 원적외선과 같은 빛 또는 초음파와 같은 음파 등 슬러지의 특성과 여건에 따라 다양한 종류의 파로 대체될 수 있으며 초음파는 슬러지에 직접 전달될 수 있도록 발진기(20)를 여과포 또는 롤러에 밀착시키기도 한다.That is, the structure of the dewatering apparatus according to the present invention is to improve the efficiency of the dewatering by placing the high frequency oscillator 20 in the dewatering device that is filtered and dewatered by the filter cloth of the crawler type and a plurality of rollers (10). In addition, the oscillator is not limited to high frequency, and may be replaced with various types of waves according to the characteristics and conditions of the sludge such as light such as laser or far infrared rays or sound waves such as ultrasonic waves, and the ultrasonic wave 20 may be directly transmitted to the sludge. It may be in close contact with a filter cloth or a roller.
또한 상기 반사경(22, 24)에 의하여 여과포의 일부구간이 밀폐되도록 구성하고 내부의 공기를 배기할 수 있는 배기구(25)를 두어 진공펌프 등을 이용하여 상기 배기구(25)를 통하여 반사경 내부에서 여과포의 어느 일방으로 공기가 이동되도록 하거나 진공을 유지시켜서 탈수효율을 개선할 수 있다.In addition, a portion of the filter cloth is sealed by the reflectors 22 and 24, and an exhaust port 25 capable of exhausting the internal air is provided, and the filter cloth inside the reflector through the exhaust port 25 using a vacuum pump or the like. Dehydration efficiency can be improved by allowing air to move to one side or maintaining a vacuum.
이와 같은 구조의 탈수 장치는 상부여과포(12)와 하부여과포(14)를 통하여 중력탈수 및 압축탈수를 시키면서 슬러지에 빛, 전자파 또는 음파 등을 선택적으로 조사하여 슬러지를 구성하는 미생물의 세포막을 파괴하거나 온도를 높여서 간극수의 점성을 낮추거나, 진동 또는 진공에 의하여 간극수가 잘 배제되도록하여 탈수 효율이 향상될 수 있게 한 것이다.The dewatering device having such a structure destroys the cell membranes of the microorganisms constituting the sludge by selectively irradiating light, electromagnetic waves or sound waves to the sludge while performing gravity dehydration and compression dehydration through the upper filter cloth 12 and the lower filter cloth 14. By increasing the temperature, the viscosity of the pore water is decreased, or the pore water is well excluded by vibration or vacuum so that the dehydration efficiency can be improved.
그러나, 이와 같이 여과포의 상부에서 파동이 작용되는 구조의 탈수 장치에서는 초음파의 경우에는 큰 영향이 없으나, 열이 많이 발생되는 레이저, 원적외선, 고주파 전자파 등은 슬러지보다 상부여과포(12)에 먼저 작용하므로 상부여과포(12)의 수명을 감소시키는 등의 악영향을 미칠 수 있다.However, in the dewatering device having a structure in which the wave is applied on the upper part of the filter cloth, there is no significant effect in the case of ultrasonic waves, but laser, far-infrared, high frequency electromagnetic waves, etc., which generate a lot of heat, act on the upper filter cloth 12 rather than the sludge. It may have an adverse effect such as reducing the life of the upper filter cloth 12.
도 2는 상기 도 1의 탈수 장치에서 광원이나 발진기로부터 조사되는 빛이나 전자파, 초음파가 상부여과포(12)에 의해 차단되거나 상부여과포(12)의 노후화를 막기 위한 것으로, 도 1의 실시예에 간격롤러(29)를 추가로 구성하여 상부여과포(12)와 하부여과포(14)사이를 이격시키고 하부여과포(14) 위에 노출된 슬러지 위에 빛이나 전자파 등이 직접 조사될 수 있도록 개선한 것이다. 상부여과포(12)를 간격롤러(29)로 인양하여 상부여과포(12)와 하부여과포(14) 사이에 일정한 간격을 형성하고, 이 사이에 발진기(20)를 두어 하부여과포(14) 표면에 있는 슬러지에 직접 고주파가 조사될 수 있는 구조이며 그외의 구조는 도 1의 실시예와 동일하다.2 is to prevent light, electromagnetic waves, and ultrasonic waves emitted from a light source or an oscillator in the dehydration apparatus of FIG. 1 to be blocked by the upper filter cloth 12 or to prevent aging of the upper filter cloth 12. The roller 29 is further configured to be spaced apart from the upper filter cloth 12 and the lower filter cloth 14 so that light or electromagnetic waves can be directly irradiated onto the sludge exposed on the lower filter cloth 14. The upper filter cloth 12 is lifted by the interval roller 29 to form a constant gap between the upper filter cloth 12 and the lower filter cloth 14, and the oscillator 20 is disposed therebetween to rest the surface of the lower filter cloth 14 High frequency can be directly irradiated to the sludge and the other structure is the same as the embodiment of FIG.
이와 같은 구조의 장치는 상부여과포(12)에 의해 광원이나 발진기로부터의 빛이나 고주파, 초음파 등이 차단되지 않으므로 더욱 효과적이다.The device having such a structure is more effective since the upper filter cloth 12 does not block light, high frequency, and ultrasonic waves from a light source or an oscillator.
도 3의 탈수 장치는 하부여과포(14)를 통과한 빛이나 고주파, 초음파 등이 외부로 누설되는 것을 방지하는 반대측 반사경(24)을 롤러로 대체한 것이다.The dewatering device of FIG. 3 replaces the opposite reflector 24 with a roller to prevent leakage of light, high frequency, ultrasonic waves, etc. that have passed through the lower filter cloth 14 to the outside.
그 작용은 도 1의 탈수 장치와 동일하며 단지 반대측 반사경(24)이 롤러로 대체된 것으로 상기 롤러에 의하여 고주파 등의 누설이 방지되며 동시에 압축배수를 시킬 수 있는 것에 그 차이점이 있는 것이다.Its function is the same as the dewatering device of FIG. 1 except that the opposite reflector 24 is replaced by a roller, and the roller is prevented from leaking by a high frequency, and at the same time, the compression drainage is possible.
본 발명에 따른 탈수 방법의 적용은 도 1 내지 도 3에서 예를 든 벨트프레스에 국한되지 않으며 필터프레스, 건조상, 원심탈수기 등 다양한 탈수 장치에도 제한없이 적용될 수 있으며 이 또한 본 발명의 범위에 포함되는 것이다.Application of the dehydration method according to the invention is not limited to the belt press for example in Figures 1 to 3 can be applied without limitation to various dehydration apparatus, such as filter press, dry phase, centrifugal dehydrator and also included in the scope of the present invention Will be.
상술한 바와 같이 본 발명의 탈수 방법 및 탈수 장치는 이미 제작되어 사용중인 종래의 탈수 장치의 효율을 용이하게 개선할 수 있으며 하폐수 처리장에서 발생되는 슬러지의 탈수효율을 개선하여 슬러지의 수분함량과 체적을 감소시킴으로써 운반비용, 처분비용, 소각에 따른 보조연료비용면에서 매우 경제적이며 슬러지의 물성이 개량되어 취급이 용이해질 뿐만 아니라 제지공장, 전분공장 등의생산공장의 탈수 공정에서도 이용할 수 있다.As described above, the dewatering method and the dewatering device of the present invention can easily improve the efficiency of the conventional dewatering device already in use and improve the dewatering efficiency of the sludge generated in the wastewater treatment plant to improve the water content and volume of the sludge. By reducing, it is very economical in terms of transportation cost, disposal cost, and auxiliary fuel cost due to incineration, and it improves sludge physical properties, which makes it easy to handle and can be used in dehydration processes of production plants such as paper mills and starch factories.
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019990012797A KR100330731B1 (en) | 1999-04-12 | 1999-04-12 | Dewatering apparatus of sludge and dewaterer |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019990012797A KR100330731B1 (en) | 1999-04-12 | 1999-04-12 | Dewatering apparatus of sludge and dewaterer |
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| KR20000065988A true KR20000065988A (en) | 2000-11-15 |
| KR100330731B1 KR100330731B1 (en) | 2002-04-03 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020078452A (en) * | 2001-04-09 | 2002-10-18 | 대정엔바이로(주) | Vacuum suction type sludge dewatering device using an electromagnetic heat source device and air pressurization |
| KR100393943B1 (en) * | 2001-04-18 | 2003-08-14 | 김용훈 | High pressure dehydrator with improved dehydration efficiency |
| KR100406191B1 (en) * | 2001-06-21 | 2003-11-17 | 김용훈 | Vacuum high pressure dehydrator with improved dewatering efficiency |
| WO2005014494A1 (en) * | 2003-08-06 | 2005-02-17 | Dong-Min Choi | Sludge treatment system and carbureter |
| KR101865306B1 (en) | 2017-04-11 | 2018-06-07 | 주식회사 한국워터테크놀로지 | Facility for solidification of the sludge |
| KR101867059B1 (en) | 2017-04-21 | 2018-06-19 | 주식회사 한국워터테크놀로지 | Sludge supply device for sludge dewatering equipment |
| KR20190000871A (en) | 2018-12-26 | 2019-01-03 | (주)한국워터테크놀로지 | Sludge supply device for sludge dewatering equipment |
| KR20190052930A (en) * | 2017-11-09 | 2019-05-17 | 김찬삼 | Drying Apparatus and method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100936972B1 (en) * | 2008-11-21 | 2010-01-15 | 주식회사 울트라보드 | High-degree flame retardant processing method and dehydration of flame retardant liquid for expanded polystyrene foam |
-
1999
- 1999-04-12 KR KR1019990012797A patent/KR100330731B1/en not_active IP Right Cessation
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020078452A (en) * | 2001-04-09 | 2002-10-18 | 대정엔바이로(주) | Vacuum suction type sludge dewatering device using an electromagnetic heat source device and air pressurization |
| KR100393943B1 (en) * | 2001-04-18 | 2003-08-14 | 김용훈 | High pressure dehydrator with improved dehydration efficiency |
| KR100406191B1 (en) * | 2001-06-21 | 2003-11-17 | 김용훈 | Vacuum high pressure dehydrator with improved dewatering efficiency |
| WO2005014494A1 (en) * | 2003-08-06 | 2005-02-17 | Dong-Min Choi | Sludge treatment system and carbureter |
| KR101865306B1 (en) | 2017-04-11 | 2018-06-07 | 주식회사 한국워터테크놀로지 | Facility for solidification of the sludge |
| KR101867059B1 (en) | 2017-04-21 | 2018-06-19 | 주식회사 한국워터테크놀로지 | Sludge supply device for sludge dewatering equipment |
| KR20190052930A (en) * | 2017-11-09 | 2019-05-17 | 김찬삼 | Drying Apparatus and method |
| KR20190000871A (en) | 2018-12-26 | 2019-01-03 | (주)한국워터테크놀로지 | Sludge supply device for sludge dewatering equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100330731B1 (en) | 2002-04-03 |
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