KR940009275B1 - Waste water and oil treatment method - Google Patents
Waste water and oil treatment method Download PDFInfo
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- KR940009275B1 KR940009275B1 KR1019910009567A KR910009567A KR940009275B1 KR 940009275 B1 KR940009275 B1 KR 940009275B1 KR 1019910009567 A KR1019910009567 A KR 1019910009567A KR 910009567 A KR910009567 A KR 910009567A KR 940009275 B1 KR940009275 B1 KR 940009275B1
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- oil
- aqueous
- water
- waste oil
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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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Description
제1도는 본 발명의 처리방법에 이용되는 수성 신선폐유처리 장치도.1 is an aqueous fresh waste oil treatment apparatus used in the treatment method of the present invention.
본 발명의 수성 신선폐유의 처리방법에 관한 것으로서, 보다 구체적으로는 수성 신선폐유의 유성분을 수용화하고, 유화분리후, 중화하고, 응집처리하는 것에 의하여 유수분리기의 사용을 배제한 신규유용의 수성 신선폐유 처리방법에 관한 것이다.The present invention relates to a method for treating aqueous fresh waste oil of the present invention, and more particularly, to a new useful aqueous fresh product which excludes the use of an oil separator by solubilizing the oil component of the aqueous fresh waste oil, and then neutralizing and coagulating the emulsion. It relates to a waste oil treatment method.
종래, 신선 공정후 폐기되는 수성 신선폐유를 처리하기 위하여 유수분리기만을 사용하거나 또는 유화분리후 유수분리기를 사용하는 방법을 이용하여 왔다. 그중 처리효과가 보다 우수한 후자의 방법에 의하여, 신세폐유를 황산반토[Al2(SO4)3·18H2O]로 60-70℃로 가열하에 유화하고 50% H2SO4로 pH를 2로 떨어뜨려 유층과 수층의 분리를 촉진하여 유수분리기로 유층과 수층을 분리한후, 분리된 유층은 소각하고 수층을 중화처리하여 방류하는 것으로써 처리한다.Conventionally, a method using only an oil separator or an oil separator after emulsion separation has been used to treat aqueous fresh waste oil discarded after the drawing process. In the latter method, the new waste oil is emulsified with alumina sulfate [Al 2 (SO 4 ) 3 · 18H 2 O] at 60-70 ° C. under heating to 50% H 2 SO 4 . After separating the oil layer and the water layer to promote separation of the oil layer and the water layer, the oil layer and the water layer are separated by an oil / water separator, and the separated oil layer is incinerated and treated by neutralizing the water layer to discharge.
그러나, 이와같은 처리방법은 유화분리가 불완전하여 유수분리기를 필요하므로, 처리작업이 복잡하고 막대한 처리비가 소요될 뿐만 아니라 2차 공해를 유발하는 등의 문제점을 내포하고 있다.However, such a treatment method requires an oil-water separator due to the incomplete emulsion separation, and thus, the treatment operation is complicated and entails enormous treatment costs, and also causes problems such as secondary pollution.
따라서, 본 발명은 유수분리기를 필요로 하지 않으며 2차 공해발생 위험이 없고 간단한 조작과 저렴한 처리비용으로 수성 신선폐유를 효과적으로 처리하는 방법을 제공하는 것을 과제로 한다.Accordingly, an object of the present invention is to provide a method for effectively treating an aqueous fresh waste oil without requiring an oil separator and without the risk of secondary pollution and simple operation and low processing cost.
상기한 과제는 본 발명에 따라 수성 신선폐유의 유성분을 수용화하고, 유화분리후, 중화하고, 응집처리하는 것에 의하여 달성된다.The above object is achieved by solubilizing the oil component of the aqueous fresh waste oil according to the present invention, neutralizing it after the emulsion separation, and coagulating the same.
즉, 본 발명에 의하여 수성 신선폐유를 처리하는 방법은 다음의 5단계 공정으로 대별된다 :That is, the method for treating aqueous fresh oil according to the present invention is roughly divided into the following five step processes:
(1) 수용화공정-메탄올과 수성 수산화칼륨으로 이루어진 유기성 수용화제로 수성 신선폐유의 유성분을 수용화처리.(1) Solubilization process-An organic solubilizer composed of methanol and aqueous potassium hydroxide to solubilize the oil component of aqueous fresh waste oil.
(2) 유화분리공정-수용화처리된 폐유를 유화제로 유화분리처리.(2) Emulsification Separation Process-Emulsification of the solubilized waste oil with emulsifier.
(3) 중화 공정-유화분리된 폐유를 소석회를 사용하여 pH 7-8로 중화처리.(3) Neutralization Process-Neutralized waste oil to pH 7-8 using slaked lime.
(4) 응집침전공정-고분자 응집제로 응집, 침전처리.(4) Agglomeration sedimentation process-Agglomeration and precipitation treatment with polymer flocculant.
(5) 폐기처리공정-응집침전물은 탈수처리하고 상등수는 재증화한 후 방류.(5) Disposal process-the flocculation sediment is dehydrated and the supernatant is re-evaporated and discharged.
본 발명에 따르면 유수분리기 사용을 배제할 수 있게 되는데, 그 이유는 구체적으로 설명하면, 신선폐유는 주로 고급지방산의 글리세린 에스테르(글리세라이드)와 물로 이루어지므로, 본 발명의 유기성 수용화제를 첨가하면 글리세라이드는 용해, 혼화되고 유기성 수용화제중의 수산화 칼륨에 의한 검화반응에 의하여 글리세라이드가 수용성의 글리세린과 지방산 비누로 분해되어,According to the present invention, it is possible to exclude the use of an oil and water separator. Specifically, the fresh waste oil mainly consists of glycerin ester (glyceride) and water of a higher fatty acid. Ride is dissolved and blended, and the glyceride is decomposed into water-soluble glycerin and fatty acid soap by saponification reaction with potassium hydroxide in organic solubilizing agent.
유화제 의하여 완전히 유화분리된 후, 응집침전되므로 유수분리기를 사용할 필요가 없게 된다.After completely emulsified by the emulsifier, there is no need to use an oil / water separator since it is flocculated and precipitated.
상기한 본 발명 특유의 유기성 수용화제는 메틸알콜과 10% 수산화칼륨 수용액의 1 : 1(몰비) 혼합물이 바람직하다.The organic water-soluble agent unique to the present invention described above is preferably a 1: 1 (molar ratio) mixture of methyl alcohol and 10% aqueous potassium hydroxide solution.
고분자 응집제는 당분야에 잘알려져 있으며, 그 바람직한 예로는 폴리아크릴아미드 등과 같은 비이온성 폴리머 응집제가 있다.Polymeric flocculants are well known in the art, and preferred examples thereof are nonionic polymer flocculants such as polyacrylamide and the like.
상술한 바와같이, 본 발명에 의하여 수성 신선폐유증의 유성분이 수용화된 상태에서 완전 유화되고, 중화, 침전되므로 유수분리가 필요없게 되고, 가열로 및 소각로도 불필요하므로 2차공해가 발생할 위험이 없고, 처리작업이 간단할 뿐만 아니라 처리비가 저렴하게 된다.As described above, since the oil component of aqueous fresh lung disease is completely emulsified, neutralized, and precipitated in the state of being accepted, no oil / water separation is necessary, and a heating furnace and an incinerator are also unnecessary, so that there is a risk of secondary pollution. No processing is simple and the processing cost is low.
이하, 첨부도면과 비한정적 실시예를 이용하여 본 발명의 처리방법을 보다 상세히 설명하기로 한다.Hereinafter, the treatment method of the present invention will be described in detail by using the accompanying drawings and non-limiting examples.
[실시예]EXAMPLE
드레인 밸브(drain valve)(4) 및 교반기(3)가 설치된 용량 0.5㎥, 규격 3t×750φ×1120㎜의 스텐레스 강재 처리조(1)에 망목크기 2-3㎜의 스크린망(2)을 통해 신선폐유 0.1㎥을 투입하여 협잡물(挾雜物)을 제거하였다.The stainless steel processing tank 1 having a capacity of 0.5 m3 and a standard 3t × 750φ × 1120 mm equipped with a drain valve 4 and a stirrer 3 is provided with a screen mesh 2 having a mesh size of 2-3 mm. 0.1㎥ of fresh waste oil was added to remove impurities.
메탄올과 10% 수산화칼륨 수용액의 1:1(몰비) 혼합용액인 유기성 수용화제 10ℓ를 교반하에 투입하여 유성분을 검화, 용해시키고, 발생 CO2가스를 제거하였다.10 L of an organic water-solubilizer, a 1: 1 (molar ratio) mixed solution of methanol and 10% aqueous potassium hydroxide solution, was added under stirring to saponify and dissolve the oil component, and remove the generated CO 2 gas.
유화제로 폴리염화알루미늄(PAC) 10㎏을 첨가하여 유화분리시킨 후, 소석회 5㎏을 첨가하여 pH 7로 중화하였다. 그 다음 폴리아크릴아미드 1㎏을 가하여 응집 침전시킨후, 응집침전물은 드레인밸브를 통해 슬러지 저장소(5)에 이송하여 탈수처리하고, 상등수는 집수조(6)에 모아 재중화 처리후 방류하였다.10 kg of polyaluminum chloride (PAC) was added as an emulsifier to emulsify and then neutralized to pH 7 by adding 5 kg of hydrated lime. Then, after 1 kg of polyacrylamide was added to coagulate and precipitate, the coagulated sediment was transferred to the sludge reservoir (5) through a drain valve and dewatered, and the supernatant was collected in a sump (6) and discharged after re-neutralization.
[비교예][Comparative Example]
상기 실시예 기재의 방식으로 협잡물을 제거한 신선폐유를 황산반토를 가하고 60-70℃의 온도로 가열하여 유화하고, 50% H2SO4로 pH를 2로 떨어뜨려 유충과 수충의 분리를 촉진하고나서, 유수분리기로 유층과 수충을 분리하였다. 분리된 유층은 소각하고 수층은 중화처리하여 방류하였다. 하기 표는 본 발명 실시예와 비교예의 차이점을 명백히 하기 위하여 제공된다.Fresh waste oil from which contaminants were removed in the manner described in Example was emulsified by adding alumina sulfate and heating to a temperature of 60-70 ° C., and dropping the pH to 2 with 50% H 2 SO 4 to promote separation of larvae and larvae. Then, the oil layer and the larva were separated by an oil separator. The separated oil layer was incinerated and the aqueous layer was discharged by neutralization. The following table is provided to clarify the differences between the inventive examples and the comparative examples.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910009567A KR940009275B1 (en) | 1991-06-11 | 1991-06-11 | Waste water and oil treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910009567A KR940009275B1 (en) | 1991-06-11 | 1991-06-11 | Waste water and oil treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930000390A KR930000390A (en) | 1993-01-15 |
| KR940009275B1 true KR940009275B1 (en) | 1994-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019910009567A KR940009275B1 (en) | 1991-06-11 | 1991-06-11 | Waste water and oil treatment method |
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| KR (1) | KR940009275B1 (en) |
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1991
- 1991-06-11 KR KR1019910009567A patent/KR940009275B1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR930000390A (en) | 1993-01-15 |
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