KR0148444B1 - Process of aluminum recovery from the sludge - Google Patents
Process of aluminum recovery from the sludgeInfo
- Publication number
- KR0148444B1 KR0148444B1 KR1019950014355A KR19950014355A KR0148444B1 KR 0148444 B1 KR0148444 B1 KR 0148444B1 KR 1019950014355 A KR1019950014355 A KR 1019950014355A KR 19950014355 A KR19950014355 A KR 19950014355A KR 0148444 B1 KR0148444 B1 KR 0148444B1
- Authority
- KR
- South Korea
- Prior art keywords
- sludge
- aluminum
- recovering
- extractant
- recovery
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
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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
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
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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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
Abstract
본 발명은 폐수처리나 정수처리 후에 발생되는 슬러지내에서 알루미늄을 회수하여 슬러지의 재활용을 용이하게 하기 위한 슬러지내의 알루미늄 회수 공정에 관한 것으로서, 본 발명에 의한 알루미늄을 회수하는 공정은 산에 의하여 슬러지를 산성화하는 제1단계; 추출제를 사용하여 알루미늄의 상전이를 사용하여 추출하는 제2단계, 순수한 알루미늄을 재사용할 수 있도록 회수하는 제3단계로 구성되어 있다.The present invention relates to a process for recovering aluminum in sludge for recovering aluminum in the sludge generated after wastewater treatment or water treatment to facilitate the recycling of sludge. The process for recovering aluminum according to the present invention is performed by acid. A first step of acidification; It is composed of a second step of extracting using a phase transition of aluminum using an extractant, and a third step of recovering to reuse pure aluminum.
Description
제1도는 일반적인 정수 처리 공정을 나타내는 블록도.1 is a block diagram showing a general water treatment process.
제2도는 본 발명에 의한 슬러지내의 알루미늄 회수 공정의 블록도이다.2 is a block diagram of the aluminum recovery process in the sludge according to the present invention.
* 도면의 주요부분에 대한 부호의설명* Explanation of symbols for the main parts of the drawings
10 : 회수조 20 : 슬러지 저류조10: recovery tank 20: sludge storage tank
30 : 슬러지 농축조 40 : 농황산 저장조30: sludge concentration tank 40: concentrated sulfuric acid storage tank
50 : 추출조 저장조50: extraction tank reservoir
본 발명은 정수처리 후에 발생되는 슬러지내에서 알루미늄을 회수하여 슬러지의 재활용을 용이하게 하기 위한 슬러지내의 알루미늄 회수 공정에 관한 것이다.The present invention relates to an aluminum recovery process in sludge for recovering aluminum in the sludge generated after the water treatment to facilitate the recycling of the sludge.
수처리후에 발생되는 슬러지에 대한 처리에 관하여 국내의 경우에는 슬러지 자체를 매립하는 것에만 의존하여 왔고, 최근에는 슬러지를 퇴비화하여 비료로 생산하는 경우가 있는데, 이 경우에 있어서도 슬러지 내에 함유된 금속이 문제가 되는데, 특히 알루미늄에 대한 회수에 관한 공정은 알려진 바가 없다.In Korea, the treatment of sludge generated after water treatment has been relied only on landfilling of the sludge. Recently, the sludge is composted and produced as a fertilizer. In this case, the metal contained in the sludge is also a problem. In particular, no process for recovering aluminum is known.
국외의 경우, 1992년 조성막(Composite membrane)을 이용하여 알루미늄을 선택적으로 회수한 연구가 있었지만 이러한 조성막은 그 가격이 매우 고가이어서, 조성막을 이용한 알루미늄회수 공정은 그 실용화에 문제점이 있었다.In foreign countries, there was a study in which aluminum was selectively recovered using a composite membrane in 1992, but such a composition film is very expensive, and the aluminum recovery process using the composition film has problems in practical use.
본 발명의 목적은 일반적인 정수처리 공정에서, 슬러지를 탈수하는 공정전에 유용한 알루미늄을 회수하는 방법을 제공하는 것이다.It is an object of the present invention to provide a method for recovering aluminum that is useful before the sludge dewatering process in a general water treatment process.
이하에서 첨부된 도면을 참조하면서, 본 발명에 의한 슬러지내의 알루미늄 회수 공정을 상세하게 설명하기로 한다.Hereinafter, the aluminum recovery process in the sludge according to the present invention will be described in detail with reference to the accompanying drawings.
제1도는 일반적인 정수 처리 공정을 나타내는 블록도이다.1 is a block diagram showing a general water purification process.
정수처리장치에 유입되는 원수는 착수정, 흔화지를 거치고 응집되어 침전된 후 여과된 슬러지가 회수조(10)에 수집된다. 회수조(10)에 수집된 슬러지는 침사지, 조정조, 약품흔화조, 농축조를 거쳐서 슬러지저류조(20)에 모이고 탈수되어 매립된다.The raw water flowing into the purified water treatment device passes through a water well, a congestion site, aggregates, and precipitates, and the filtered sludge is collected in the recovery tank 10. The sludge collected in the recovery tank 10 is collected in the sludge storage tank 20 through a settling basin, an adjustment tank, a chemical combustion tank, a concentration tank, and dewatered and landfilled.
본 발명에 의한 슬러지내의 알루미늄 회수 공정은 슬러지가 탈수되기 전의 슬러지 저류조에 농축된 슬러지에서 알루미늄을 회수하기 위한 공정이다.The aluminum recovery process in the sludge according to the present invention is a process for recovering aluminum from the sludge concentrated in the sludge storage tank before the sludge is dewatered.
제2도는 본 발명에 의한 슬러지내의 알루미늄 회수 공정의 블록도이다.2 is a block diagram of the aluminum recovery process in the sludge according to the present invention.
본 발명에 의한 알루미늄을 회수하는 공정은 산에 의하여 슬러지를 산성화하는 제1단계; 추출제를 사용하여 알루미늄의 상전이를 사용하여 추출하는 제2단계, 순수한 알루미늄을 재사용할 수있도록 회수하는 제3단계로 구성되어 있다.The process of recovering aluminum according to the present invention comprises a first step of acidifying sludge by acid; It consists of a second step of extracting the phase transition of aluminum using the extractant, and a third step of recovering the pure aluminum to be reused.
제1단계로서 산성화 단계는, 알루미늄이 산성 용액에서 회수가 잘되게 성질을 이용하기 위한 것으로서 슬러지를 산성화 처리하는 단계이다.The acidification step as a first step is to acidify the sludge as to use the property so that aluminum is well recovered from the acid solution.
산성화 단계에서는 슬러지가 탈수되기전의 상태인 슬러지 농축조(30)에서 상층부의 상장액을 방류하고, 농황산저장소(40)로부터의 96% 진한 황상과 슬러지를 혼합하여 침전시킨후에 탈수하여 여액은 방류한다.In the acidification step, the supernatant of the upper layer is discharged from the sludge concentration tank 30 which is in the state before the sludge is dehydrated, and the precipitate is mixed and precipitated by mixing the 96% thick sulfur phase from the concentrated sulfuric acid reservoir 40 and the sludge to discharge the filtrate.
제2단계로서 추출단계는 추출제를 사용하여 알루미늄 이온이 추출제로 상전이하는 것을 유도하여 알루미늄 이온을 분리하는 단계이다.As a second step, the extraction step is a step of inducing the phase transition of aluminum ions to the extractant using an extractant to separate the aluminum ions.
추출로서는 모노, 디(2-에틸 헥실)포스포릭산(MOEHPA)을 사용한다.Mono, di (2-ethylhexyl) phosphoric acid (MOEHPA) is used as extraction.
추출제가 저장되어 있는 추출제 저장소(50)로부터 추출제를 산성화된 슬러지와 혼합하여 정치시킨다. 추출제로 추출되지 않은 슬러지는 활성탄으로 여과하여 황산과 혼합하여 산성화하는 단계를 다시 거치게 된다.The extractant is mixed with acidified sludge from the extractant reservoir 50 where the extractant is stored and left to stand. Sludge not extracted with the extractant is filtered through activated carbon and mixed with sulfuric acid to acidify.
제3단계는 추출제로 추출된 알루미늄 이온을 순수한 알루미늄으로 회수하는 단계이다.The third step is to recover the aluminum ions extracted with the extractant to pure aluminum.
추출단계를 거친 슬러지를 황산과 혼합하여 정치시켜서, 액체 황산알루미늄의 형태로 알루미늄을 회수하고, 추출제는 재순환시켜서 사용한다.The sludge from the extraction step is mixed with sulfuric acid and left to stand to recover aluminum in the form of liquid aluminum sulfate, and the extractant is recycled and used.
이상에서 설명한 바와 같이, 본 발명에 의한 슬러지내의 알루미늄 회수 공정에 의하면, 슬러지에 포함된 알루미늄을 회수하여 알루미늄의 재사용이 가능하고, 전자선 가속기를 이용한 슬러지의 처리시 슬러지의 퇴비화가 용이하고 금속 이온이 의한 제2의 오염을 방지할 수 있을 뿐만 아니라, 조성막(Composite membrane)을 이용하는 알루미늄 회수 공정에 비하여 비용 소모가 작으므로 슬러지 내에서의 알루미늄 회수를 실용화할 수 있는 장점이 있다.As described above, according to the aluminum recovery process in the sludge according to the present invention, it is possible to recover the aluminum contained in the sludge and reuse the aluminum, it is easy to compost the sludge during the treatment of the sludge using the electron beam accelerator and the metal ions In addition to preventing the second pollution by the, as compared with the aluminum recovery process using a composite membrane (composite membrane), the cost consumption is small, there is an advantage that can be utilized in the recovery of aluminum in the sludge.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950014355A KR0148444B1 (en) | 1995-05-31 | 1995-05-31 | Process of aluminum recovery from the sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950014355A KR0148444B1 (en) | 1995-05-31 | 1995-05-31 | Process of aluminum recovery from the sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960041089A KR960041089A (en) | 1996-12-17 |
| KR0148444B1 true KR0148444B1 (en) | 1998-10-15 |
Family
ID=19416249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950014355A KR0148444B1 (en) | 1995-05-31 | 1995-05-31 | Process of aluminum recovery from the sludge |
Country Status (1)
| Country | Link |
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| KR (1) | KR0148444B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100721050B1 (en) | 2005-01-17 | 2007-05-23 | 미쓰이 가가쿠 가부시키가이샤 | Liquid-liquid extracting method |
| KR101443434B1 (en) * | 2011-03-23 | 2014-09-24 | 제이엑스 닛코 닛세키 킨조쿠 가부시키가이샤 | Back extraction method and removal method of aluminum |
| KR101445443B1 (en) * | 2011-03-23 | 2014-09-26 | 제이엑스 닛코 닛세키 킨조쿠 가부시키가이샤 | Solvent extraction method of aluminum |
| KR101460731B1 (en) * | 2014-06-24 | 2014-11-12 | 주식회사 케이디 | Method for collecting highly concentrated coagulant recycled from water-treatment sludge and apparatus therefor |
-
1995
- 1995-05-31 KR KR1019950014355A patent/KR0148444B1/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100721050B1 (en) | 2005-01-17 | 2007-05-23 | 미쓰이 가가쿠 가부시키가이샤 | Liquid-liquid extracting method |
| KR101443434B1 (en) * | 2011-03-23 | 2014-09-24 | 제이엑스 닛코 닛세키 킨조쿠 가부시키가이샤 | Back extraction method and removal method of aluminum |
| KR101445443B1 (en) * | 2011-03-23 | 2014-09-26 | 제이엑스 닛코 닛세키 킨조쿠 가부시키가이샤 | Solvent extraction method of aluminum |
| KR101460731B1 (en) * | 2014-06-24 | 2014-11-12 | 주식회사 케이디 | Method for collecting highly concentrated coagulant recycled from water-treatment sludge and apparatus therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960041089A (en) | 1996-12-17 |
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