KR100990486B1 - Potabilization method and apparatus for producing potable water from desalinated seawater - Google Patents
Potabilization method and apparatus for producing potable water from desalinated seawater Download PDFInfo
- Publication number
- KR100990486B1 KR100990486B1 KR1020100079909A KR20100079909A KR100990486B1 KR 100990486 B1 KR100990486 B1 KR 100990486B1 KR 1020100079909 A KR1020100079909 A KR 1020100079909A KR 20100079909 A KR20100079909 A KR 20100079909A KR 100990486 B1 KR100990486 B1 KR 100990486B1
- Authority
- KR
- South Korea
- Prior art keywords
- fresh water
- carbon dioxide
- tank
- drinking
- water
- Prior art date
Links
Images
Classifications
-
- 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
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/26—Treatment of water, waste water, or sewage by extraction
- C02F1/265—Desalination
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
Description
본 발명은 담수를 음용수화하는 방법 및 장치에 관한 것으로서, 더욱 상세하게는 이산화탄소와 석회석을 이용하여 담수를 음용수화하는 방법 및 장치에 관한 것이다.
The present invention relates to a method and apparatus for drinking water for drinking water, and more particularly, to a method and apparatus for drinking water for drinking water using carbon dioxide and limestone.
해수(海水)를 담수화하는 방법으로는 해수에서 염분을 전기장 및 자기장을 이용하여 분리하여 담수화하는 방법, 다공성 전극판을 이용하여 해수로부터 이온성 불순물을 전기화학적으로 제거하여 담수화하는 방법, 나노여과막을 이용하여 원래의 해수로부터 스케일 성분을 제거하고, 스케일 성분이 제거된 해수와 상기 원래의 해수를 혼합하고 이 혼합수를 다중효용(multi-effect) 증발기에서 증류하여 담수화하는 방법, 해수를 역삼투장치(RO)에서 역삼투하여 담수화하는 방법, 해수를 다단플래시증발기(MSF)에서 감압증류하여 담수화하는 방법 등이 있다.Desalination of seawater includes the separation of salt from seawater using electric and magnetic fields, desalination by electrochemical removal of ionic impurities from seawater using porous electrode plates, and nanofiltration membranes. To remove the scale component from the original seawater, mix the seawater from which the scale component has been removed with the original seawater, and distill the mixed water in a multi-effect evaporator to desalize the seawater. (RO) to desalination by reverse osmosis, desalination by distillation under reduced pressure in a multi-stage flash evaporator (MSF).
일반적으로 증류법이나 역삼투압법으로 생산된 음용수는 증류수(distilled water)에 가깝다. 해수의 담수화를 통해 생성된 담수는 염분이나 가스 등이 전혀 없고 탄산칼슘의 함량(ppm as CaCO3)으로 나타낸 총 알칼리도(Total alkalinity)가 1 ppm 정도이기 때문에 이와 같이 생산된 담수는 저장탱크에 수용되는 과정에서 대기와 접촉하여 대기 중의 이산화탄소(CO2)가 용해되고 낮은 pH 값을 가지며, 또한 물 분배 시스템에서 이송되는 과정에서 배관 라인(pipe line)을 부식시킨다.Generally, drinking water produced by distillation or reverse osmosis is close to distilled water. Freshwater produced through desalination of seawater contains no salts or gases, and has a total alkalinity (ppm as CaCO 3 ) of about 1 ppm. In the process of contact with the atmosphere, the carbon dioxide (CO 2 ) in the atmosphere is dissolved and has a low pH value, and also corrodes the pipe line in the course of transport in the water distribution system.
결국, 생산된 담수는 pH 값이 낮고, 배관 라인에서 부식에 의해 생성된 산화물 등이 함유되고, 또한 TDS(Total Dissolved Solid) 농도가 낮아 음용수로서 활용할 수 없게 된다. 이러한 부식을 방지하기 위해서는 생산된 음용수가 부식성지수가 0 이상의 값을 가져야 한다. 부식성지수란 수돗물이 금속이나 시멘트의 부식에 미치는 정도를 말하는 것으로서, 일반적으로 랑게리아지수(LI)를 사용하고 0 이하이면 수도관에 대해 부식성이 있다는 것을 의미한다.As a result, the produced fresh water has a low pH value, contains an oxide produced by corrosion in a pipe line, and also has a low TDS (Total Dissolved Solid) concentration and thus cannot be used as drinking water. To prevent such corrosion, the drinking water produced should have a corrosion index of 0 or more. Corrosion index refers to the degree to which tap water affects the corrosion of metals and cements. Generally, when using a Langeria index (LI) and below 0, it means that the water pipe is corrosive.
부식성지수가 0 이상의 값을 갖도록 하기 위해 일반적으로 해수로부터 생산된 음용수, 즉 증류수에 수산화칼슘[Ca(OH)2]을 주입하고 이산화탄소를 더 투입하여, 총 알칼리도가 50ppm 이상이 되도록 알칼리도를 올려 pH 값을 8정도로 일정하게 유지시켜 부식성지수가 0 이상의 값을 갖도록 한다.In order to ensure that the corrosive index has a value greater than or equal to 0, calcium hydroxide [Ca (OH) 2 ] is injected into drinking water produced from seawater, that is, distilled water, and carbon dioxide is further added to increase the alkalinity so that the total alkalinity is 50 ppm or more. Is maintained at 8, so that the corrosive index has a value of 0 or more.
한편, 담수화 시스템 내에는 증류법 또는 역삼투압법으로 생산된 증류수에 칼슘카보네이트와 수산화칼슘을 주입하고 있다. 알칼리도를 증가시키기 위하여 사용되는 수산화칼슘은 물에 대한 용해도가 낮아 일반적인 약품 도징 장치를 사용하는 경우, 수산화칼슘이 약품 주입 배관 내에서 부유물(Suspended Solid)로 남게 되고, 결국 음용수 내에 부유물로서 잔존할 가능성이 있다. 수산화칼슘이 부유물 상태로 잔존하면 금속의 부식이 촉진돼 녹물을 발생시킬 수 있다.Meanwhile, in the desalination system, calcium carbonate and calcium hydroxide are injected into distilled water produced by distillation or reverse osmosis. Calcium hydroxide used to increase alkalinity has low solubility in water, and when using a general chemical dosing device, calcium hydroxide remains as suspended solids in the chemical injection pipe, which may eventually remain as a suspended solid in drinking water. . When calcium hydroxide remains in a suspended state, it can promote corrosion of the metal and generate rust.
이에 따라, 수산화칼슘을 주입하기 위한 라임 도징 장치는 다른 도징 장치와는 다르게 수산화칼슘을 1,200ppm의 용액으로 포화시키기 위한 라임 포화기(Lime Saturator)를 구비하고 있다(대한민국 등록특허 10-0809554/담수화 시스템의 라임 도징 장치). 일반적으로 라임 포화기의 효율은 87%이고 수산화칼슘 중 6중량%는 물에 녹지 않는 불순물로 구성되어 있어 운전 시 라임 포화기 내에는 슬러지가 발생된다. 위와 같은 슬러지는 수산화칼슘이 포함된 상태 그대로 폐기 처리하므로 수산화칼슘 손실량이 많고, 폐기 처리에 따른 비용이 많이 소요되는 문제점이 있다.
Accordingly, the lime dosing device for injecting calcium hydroxide has a lime saturator for saturating the calcium hydroxide with a solution of 1,200 ppm unlike other dosing devices (Korean Patent No. 10-0809554 / Desalination System). Lime dosing device). In general, the efficiency of the lime saturator is 87% and 6% by weight of calcium hydroxide is composed of impurities insoluble in water, so sludge is generated in the lime saturator during operation. Since the sludge as described above is disposed of as it is contained calcium hydroxide, there is a problem that a large amount of calcium hydroxide loss, the cost of the waste treatment takes a lot.
이에 본 발명은 상술한 제반 사항 및 문제점 해결에 역점을 두어 창안한 것으로서, 본 발명의 목적은 증류법 또는 역삼투압법으로 해수를 담수화한 다음의 후처리 공정(음용수화 공정)에서 효율적으로 TDS를 높여 음용수화할 수 있고, 음용수의 알칼리도를 높여서 물을 분배하는 시스템의 부식을 방지할 수 있으며, 음용수를 단순화된 장치 및 경제적인 비용으로 생산할 수 있는 담수의 음용수화 방법 및 장치를 제공하는 데 있는 것이다.
Accordingly, the present invention has been made with an emphasis on solving the above-mentioned matters and problems, and an object of the present invention is to efficiently increase TDS in a post-treatment process (drinking water hydration process) after desalination of seawater by distillation or reverse osmosis. The present invention provides a method and apparatus for drinking water that can be used for drinking water, to prevent corrosion of a system for distributing water by increasing the alkalinity of drinking water, and to produce drinking water at a simplified apparatus and at an economic cost.
상기와 같은 목적을 달성하기 위해 본 발명은 해수를 증류 또는 역삼투압으로 탈염하여 얻은 담수에 이산화탄소 가스(CO2 gas)를 과잉으로 공급하여 흡수시키는 이산화탄소 흡수공정과, 이산화탄소가 흡수된 담수를 석회석이 충전된 석회석 필터를 통과시켜 칼슘이온과 중탄산이온을 형성시키는 리미네랄리제이션 공정, 리미네랄리제이션을 거친 담수에 공기를 공급하여 초과 이산화탄소를 공기와 함께 배기하여 음용수를 얻는 이산화탄소 배기공정을 포함하는 것을 특징으로 하는 담수의 음용수화 방법을 제공한다.In order to achieve the above object, the present invention is a carbon dioxide absorption process for supplying and absorbing excess carbon dioxide gas (CO 2 gas) in fresh water obtained by desalting sea water by distillation or reverse osmosis, and limestone is a fresh water absorbed carbon dioxide A remineralization process for forming calcium ions and bicarbonate ions through a filled limestone filter, and a carbon dioxide exhausting process for supplying air to freshwater that has undergone remineralization and exhausting excess carbon dioxide with air to obtain drinking water. It provides a fresh water drinking method characterized in that.
또한, 본 발명은 이산화 탄소 배기공정을 통해 제조된 음용수에 알칼리제로서 수산화나트륨 또는 탄산나트륨을 투입하여 pH를 조절함으로써 탄산칼슘막을 형성시키는 탄산칼슘막 형성공정을 더 포함하는 것을 특징으로 하는 담수의 음용수화 방법을 제공한다. In addition, the present invention further comprises a calcium carbonate film forming step of forming a calcium carbonate film by adjusting the pH by adding sodium hydroxide or sodium carbonate as an alkali agent to the drinking water prepared by the carbon dioxide exhaust process, the drinking water of fresh water Provide a method.
또한, 본 발명은 상기한 방법을 구현하기에 바람직한 장치의 하나로서, 증류 또는 역삼투압을 통해 해수를 탈염하여 얻은 담수가 충전되는 담수조와, 상기 담수조의 하부로부터 공급되는 담수와 별도의 라인을 통해 공급되는 이산화탄소 가스를 혼합하여 담수에 이산화탄소를 흡수시킨 다음 상기 담수조의 하부로 공급하는 이산화탄소 흡수기와, 조 상부에 석회석 필터가 내장되고 상기 담수조로부터 이산화탄소가 흡수된 담수를 정량으로 공급받아 이산화탄소가 흡수된 담수가 조 상부로부터 조 하부로 석회석 필터를 통과하도록 하여 석회석의 탄산칼슘과 이산화탄소를 반응시켜 칼슘이온과 중탄산이온을 생성시키는 석회석 필터조와, 석회석 필터를 통과한 담수에 공기를 공급하여 탄산칼슘과 이산화탄소의 반응 후 잔존하는 초과 이산화탄소를 조 상부로 배기하면서 담수를 음용수화하는 탈기조를 구비하는 것을 특징으로 하는 담수의 음용수화 장치를 제공한다.In addition, the present invention is one of the preferred device for implementing the above method, the desalination tank filled with fresh water obtained by desalination of seawater through distillation or reverse osmosis, and through a separate line from the fresh water supplied from the bottom of the desalination tank The carbon dioxide absorbed by mixing the supplied carbon dioxide gas into the fresh water and then supplied to the lower portion of the fresh water tank, and the limestone filter is built in the upper portion of the tank, and the fresh water absorbed by the carbon dioxide from the fresh water tank is quantitatively supplied to absorb the carbon dioxide. Limestone filter bath that allows fresh water to pass through the limestone filter from the top of the tank to the reaction of calcium carbonate and carbon dioxide in the limestone to produce calcium ions and bicarbonate ions, and supplies air to fresh water that has passed through the limestone filter Excess carbon dioxide remaining after It provides a fresh water drinking apparatus, characterized in that it comprises a degassing tank for drinking fresh water while exhausting to the top.
또한, 본 발명은 상기 탈기조 다음에 배치되며 석회석 필터를 통과한 담수에 수산화나트륨 또는 탄산나트륨를 첨가하여 pH를 조절하는 pH 조절기를 더 포함하는 것을 특징으로 하는 담수의 음용수화 장치를 제공한다.
The present invention also provides a fresh water drinking apparatus, which is disposed after the degassing tank and further includes a pH controller for adjusting pH by adding sodium hydroxide or sodium carbonate to the fresh water passing through the limestone filter.
상술한 바와 같은 과제 해결 수단을 갖춘 본 발명은 증류법 또는 역삼투압법으로 얻은 담수의 TDS를 효율적으로 높여 담수를 음용수화할 수 있고, 알칼리도를 효율적으로 높여서 물을 분배하는 시스템의 부식을 효과적으로 방지할 수 있는 음용수를 단순화된 장치 및 경제적인 비용으로 생산할 수 있다.
The present invention having the above-mentioned means for solving the problems can effectively increase the TDS of fresh water obtained by distillation or reverse osmosis and drink fresh water, and can effectively prevent corrosion of the system for distributing water by efficiently increasing alkalinity. Potable drinking water can be produced with simplified equipment and economical costs.
도 1은 본 발명의 바람직한 실시구현 예에 따른 음용수화 장치를 개략적으로 나타낸 구성도.1 is a configuration diagram schematically showing a drinking water apparatus according to a preferred embodiment of the present invention.
이하, 본 발명의 실시 예에 따른 담수의 음용수화 방법 및 장치를 구체적으로 설명한다.Hereinafter, a method and apparatus for drinking water for freshwater according to an embodiment of the present invention will be described in detail.
먼저, 본 발명에 따른 담수의 음용수화 방법은 증류법 또는 역삼투압법을 통해 바닷물에 함유되어 있는 염화나트륨을 비롯하여 각종 염류(鹽類)를 탈염(desalination)하여 만든 담수(淡水)를 후가공하는 방법으로 이산화탄소 흡수공정, 리미네랄리제이션 공정, 이산화탄소 배기공정을 포함한다.First, the drinking water hydration method of the fresh water according to the present invention is a method of post-processing fresh water produced by desalination of various salts including sodium chloride contained in seawater through distillation or reverse osmosis. Absorption process, remineralization process, and carbon dioxide exhaust process.
이산화탄소 흡수공정은 탈염하여 얻은 담수에 이산화탄소 가스(CO2 gas)를 과잉으로 공급하여 흡수시키는 공정으로서, 이산화탄소는 증류법으로 탈염한 담수의 후가공에서는 그 증류과정에서 배기되는 이산화탄소를 이용할 수 있으나, 역삼투압법으로 탈염한 담수의 후가공에서는 별도로 공급하여야 한다.The carbon dioxide absorption process is a process of supplying excess CO 2 gas (CO 2 gas) to the fresh water obtained by desalination. In the post processing of fresh water desalted by distillation, carbon dioxide exhausted from the distillation process can be used, but reverse osmosis Post-processing of desalted fresh water by law should be provided separately.
리미네랄리제이션(remineralization) 공정은 이산화탄소 흡수공정을 통해 이산화탄소가 흡수된 담수를 석회석이 충전된 석회석 필터를 통과시키는 공정으로서, 이 공정에서 석회석의 탄산칼슘과 담수에 흡수된 이산화탄소가 하기의 화학식 1에 나타낸 바와 같이 반응하여 칼슘이온(Ca2+)과 중탄산이온(HCO3 -1)이 생성된다.
Remineralization is a process of passing carbon dioxide absorbed fresh water through a limestone-filled limestone filter through a carbon dioxide absorption process, wherein the calcium carbonate of limestone and carbon dioxide absorbed in freshwater are As shown in the reaction, calcium ions (Ca 2+ ) and bicarbonate ions (HCO 3 −1 ) are produced.
이산화탄소 배기공정은 리미네랄리제이션 공정을 거친 담수에 공기를 공급하여 잔존하는 초과 이산화탄소를 공기와 함께 배출시켜 음용수를 얻는 공정이다.The carbon dioxide exhausting process is a process of supplying air to freshwater that has undergone a remineralization process to discharge excess carbon dioxide remaining with air to obtain drinking water.
이와 같이 제조한 음용수를 분배라인을 통해 분배하는 경우에 대기와 접촉을 통해 물이 이산화탄소를 흡수하여 pH를 낮추고 부식성을 높일 수도 있다. 이를 방지하고자 한다면 수산화나트륨 또는 탄산나트륨을 투입하여 pH를 조절하는 것에 의해서 하기의 화학식 2와 같은 반응을 유도하여 탄산칼슘막을 형성시킬 수 있다.
When the drinking water thus prepared is distributed through a distribution line, water may absorb carbon dioxide through contact with the atmosphere to lower pH and increase corrosiveness. If this is to be prevented, sodium hydroxide or sodium carbonate may be added to induce a reaction such as the following Chemical Formula 2 to form a calcium carbonate film.
이러한 방법을 이용하면 경제적인 비용으로 장치설계가 가능하고 수산화칼슘 포화기를 이용하는 종래의 음용수화 방법에 비해서 훨씬 저렴한 비용으로 고품질의 음용수를 안정적으로 공급할 수 있게 된다.Using this method, it is possible to design the device at an economical cost and to stably supply high quality drinking water at a much lower cost than the conventional drinking water hydration method using a calcium hydroxide saturator.
이하, 본 발명의 방법을 구현하기에 바람직한 장치의 하나로 예시한 첨부도면을 참조하여 본 발명의 실시 예에 따른 장치를 설명한다.Hereinafter, an apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings which illustrate one of the preferred apparatus for implementing the method of the present invention.
도 1에 제시되는 음용수화 장치에서 탈염장치(10)를 통해 탈염된 담수는 담수조(20), 이산화탄소 흡수기(30), 석회석 필터조(40) 및 탈기조(50)를 통해 음용수로 변환된다.Fresh water desalted through the
구체적으로 설명하면, 탈염장치(10)를 통해 탈염된 담수는 조 상부에 형성된 담수유입구(21)를 통해 담수조(20)에 공급된다. 담수조(20)에 충전된 담수는 조 하부의 담수유출구(22)를 통해 이산화탄소 흡수기(30)로 공급된다.Specifically, the desalted water through the
이산화탄소 흡수기(30)에서는 이산화탄소 유입구(31)로 공급된 이산화탄소가 인라인믹서(32)에서 담수와 혼합되어 이산화탄소가 담수에 흡수되고, 이산화탄소가 흡수된 담수는 순환펌프(33)를 통과하여 담수조(20)의 하부로 공급된다.In the carbon dioxide absorber 30, the carbon dioxide supplied to the
담수조(20)에 유입된 이산화탄소가 흡수된 담수는 담수조(20)의 하부를 통해 배출되어 제1정량펌프(41)를 통과하여 석회석 필터조(40)의 상부로 정량 공급된다.The fresh water absorbed by the carbon dioxide introduced into the
석회석 필터조(40)의 상부에는 석회석 필터(42)가 내장되어 있어 이산화탄소가 흡수된 담수가 조 상부로부터 조 하부로 하강하는 흐름 방향으로 석회석 필터(42)를 통과하며, 이 과정에서 상기한 화학식 1에 나타낸 바와 같은 리미네랄리제이션 공정이 이루어진다. 즉, 석회석의 탄산칼슘과 이산화탄소가 반응하여 칼슘이온과 중탄산이온이 생성된다. 석회석 필터(42)는 예를 들어 망체에 석회석과 자갈 등을 충전하여 구비할 수 있다.A
이와 같은 리미네랄리제이션 공정을 거친 담수는 석회석 필터조(40)의 하부를 통해 배출되어 제2정량펌프(55)를 통과하여 탈기조(50)로 공급된다. 탈기조(50)에서는 공기유입구(51)를 통해 공기를 공급하여 석회석 필터(40)를 통과한 담수에 잔존하는 초과 이산화탄소, 즉 탄산칼슘과 이산화탄소의 반응 후 잔존하는 초과 이산화탄소를 조 상부에 형성된 배기구(52)를 통해 배출하면서 담수를 음용수화한다. 이때, 탈기조(50)에 내장된 필터(56)에 의해 석회석 필터(40)를 통과한 담수와 공기유입구(51)를 통해 공급되는 공기가 접촉되어 더욱 균일하게 반응을 일으키게 된다.The fresh water that has undergone such a remineralization process is discharged through the lower portion of the
그리고 도시되는 예에서 참조부호 53은 탈기(degasified) 과정을 거친 음용수의 배출구를 나타낸 것이다.In the illustrated example,
또한, 도시되지는 않으나 석회석 필터(40)를 통과한 담수에 수산화나트륨 또는 탄산나트륨를 첨가하여 pH를 조절하는 pH 조절기를 탈기조 다음에 설치할 수도 있다. 이러한 pH 조절기를 설치함으로써 음용수를 분배라인을 통해 분배하는 경우에 대기와 접촉을 통해 물이 이산화탄소를 흡수하여 pH를 낮추고 부식성을 높일 수도 있는 문제를 방지할 수 있게 된다. 즉, 수산화나트륨 또는 탄산나트륨을 투입하여 pH를 조절하는 것에 의해서 상기한 화학식 2와 같은 반응이 유도되어 탄산칼슘막이 형성되면서 부식성지수가 0 이상이 된다.In addition, although not shown, a pH regulator for adjusting pH by adding sodium hydroxide or sodium carbonate to fresh water passing through the
하기 표 1은 50L의 아크릴 재질의 담수조와 내경기준 100×500mm 크기의 석회석 필터조를 사용한 실험실 규모의 본 발명 장치에서 담수를 후가공하여 얻은 음용수의 TDS, 알칼리도, 경도(hardness), pH를 나타낸 것이다.Table 1 shows the TDS, alkalinity, hardness, pH of drinking water obtained by post-processing fresh water in the laboratory scale of the present invention apparatus using a 50L acrylic freshwater tank and a limestone filter tank having an inner diameter of 100 × 500 mm. .
상기한 실험결과로부터 본 발명에 의해 후가공된 음용수는 TDS가 음용수로 사용하기에 적합하고, 알칼리도가 물분배 시스템의 부식을 방지하기에 적합하다는 사실을 알 수 있다.
From the above experimental results, it can be seen that the drinking water post-processed by the present invention is suitable for use as TDS for drinking water and alkalinity to prevent corrosion of the water distribution system.
10: 탈염장치
20: 담수조
21: 담수유입구
22: 담수유출구
30: 이산화탄소 흡수기
31: 이산화탄소 유입구
32: 인라인 믹서
33: 순환펌프
40: 석회석 필터조
41: 제1정량펌프
42: 석회석 필터
50: 탈기조
51: 공기유입구
52: 배기구
53: 배출구
55: 제2정량펌프
56: 필터10: desalination unit
20: freshwater tank
21: Freshwater Inlet
22: Freshwater Outlet
30: carbon dioxide absorber
31: carbon dioxide inlet
32: inline mixer
33: circulation pump
40: limestone filter tank
41: 1st fixed pump
42: limestone filter
50: degassing tank
51: air inlet
52: exhaust vent
53: outlet
55: 2nd fixed pump
56: filter
Claims (4)
해수를 증류 또는 역삼투압으로 탈염하여 얻은 담수에 이산화탄소 가스(CO2 gas)를 과잉으로 공급하여 흡수시키는 이산화탄소 흡수공정과;
이산화탄소가 흡수된 담수를 석회석이 충전된 석회석 필터를 통과시켜 칼슘이온과 중탄산이온을 형성시키는 리미네랄리제이션(remineralization) 공정과;
리미네랄리제이션을 거친 담수에 공기를 공급하여 초과 이산화탄소를 공기와 함께 배기하여 음용수를 얻는 이산화탄소 배기공정;
을 포함하는 담수의 음용수화 방법.
In drinking fresh water,
A carbon dioxide absorption step of supplying excess carbon dioxide gas (CO 2 gas) to the fresh water obtained by desalting sea water by distillation or reverse osmosis;
A remineralization process of passing fresh water absorbed with carbon dioxide through a limestone-filled limestone filter to form calcium ions and bicarbonate ions;
A carbon dioxide exhausting step of supplying air to freshwater that has undergone remineralization and exhausting excess carbon dioxide with air to obtain drinking water;
Fresh water drinking method comprising a.
The freshwater drinking method according to claim 1, further comprising a calcium carbonate film forming step of forming a calcium carbonate film by adjusting pH by adding sodium hydroxide or sodium carbonate as an alkaline agent to drinking water prepared by the carbon dioxide exhausting process.
증류 또는 역삼투압을 통해 해수를 탈염하여 얻은 담수가 충전되는 담수조와;
상기 담수조의 하부로부터 공급되는 담수와 별도의 라인을 통해 공급되는 이산화탄소 가스를 혼합하여 담수에 이산화탄소를 흡수시킨 다음 상기 담수조의 하부로 공급하는 이산화탄소 흡수기와;
조 상부에 석회석 필터가 내장되고 상기 담수조로부터 이산화탄소가 흡수된 담수를 정량으로 공급받아 이산화탄소가 흡수된 담수가 조 상부로부터 조 하부로 석회석 필터를 통과하도록 하여 석회석의 탄산칼슘과 이산화탄소를 반응시켜 칼슘이온과 중탄산이온을 생성시키는 석회석 필터조; 및
석회석 필터를 통과한 담수에 공기를 공급하여 탄산칼슘과 이산화탄소의 반응 후 잔존하는 초과 이산화탄소를 조 상부로 배기하면서 담수를 음용수화하는 탈기조;
를 포함하는 담수의 음용수화 장치.
In the apparatus for drinking water of fresh water obtained by desalting sea water by distillation or reverse osmosis,
A fresh water tank filled with fresh water obtained by desalting seawater through distillation or reverse osmosis;
A carbon dioxide absorber for mixing the fresh water supplied from the lower part of the fresh water tank with the carbon dioxide gas supplied through a separate line to absorb the carbon dioxide into the fresh water and then supplying the fresh water to the lower part of the fresh water tank;
The limestone filter is built in the upper part of the tank, and the fresh water absorbed by the carbon dioxide from the freshwater tank is supplied quantitatively so that the fresh water absorbed by the carbon dioxide passes through the limestone filter from the upper part of the tank to the reaction of calcium carbonate and carbon dioxide in the limestone to make calcium ions. Limestone filter tank for producing bicarbonate ions; And
A degassing tank for supplying air to the fresh water passing through the limestone filter to drink fresh water while exhausting excess carbon dioxide remaining after the reaction of calcium carbonate and carbon dioxide to the upper portion of the tank;
Fresh water drinking apparatus comprising a.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100079909A KR100990486B1 (en) | 2010-08-18 | 2010-08-18 | Potabilization method and apparatus for producing potable water from desalinated seawater |
| PCT/KR2011/005861 WO2012023742A2 (en) | 2010-08-18 | 2011-08-10 | Potabilization method and apparatus for producing potable water from desalinated seawater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100079909A KR100990486B1 (en) | 2010-08-18 | 2010-08-18 | Potabilization method and apparatus for producing potable water from desalinated seawater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR100990486B1 true KR100990486B1 (en) | 2010-11-29 |
Family
ID=43409156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020100079909A KR100990486B1 (en) | 2010-08-18 | 2010-08-18 | Potabilization method and apparatus for producing potable water from desalinated seawater |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100990486B1 (en) |
| WO (1) | WO2012023742A2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2565165A1 (en) * | 2011-08-31 | 2013-03-06 | Omya Development AG | Remineralization of desalinated and of fresh water by dosing of a calcium carbonate solution in soft water |
| KR101294608B1 (en) | 2011-10-13 | 2013-08-08 | 그린엔텍 주식회사 | Lime dosing system of seawater desalination plant |
| KR101334455B1 (en) * | 2012-08-24 | 2013-11-29 | 한밭대학교 산학협력단 | Purification apparatus for drinking water and distillation |
| KR20210031331A (en) * | 2019-09-11 | 2021-03-19 | 한국기계연구원 | Remineralization apparatus for desalination plant |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUB20154766A1 (en) * | 2015-11-03 | 2017-05-03 | Fisia Italimpianti S P A | Recharging plant for a mixture of distilled water from thermal and permeation desalination plants from reverse osmosis desalination plants |
| ITUB20155252A1 (en) * | 2015-11-03 | 2017-05-03 | Fisia Italimpianti S P A | Recharge plant for distilled and / or permeate water using calcium carbonate reactors and injection of carbon dioxide and strong acids |
| CN105942857A (en) * | 2016-07-02 | 2016-09-21 | 杭州再想科技有限公司 | Automatic mineral adding water dispenser |
| CN106904716B (en) * | 2017-03-27 | 2020-07-14 | 天津市水利科学研究院 | Seawater desalination water mineralization system and manufacturing method thereof |
| JP7086793B2 (en) * | 2017-08-31 | 2022-06-20 | 三菱ケミカルアクア・ソリューションズ株式会社 | Water treatment method and water treatment system |
| CN108862676A (en) * | 2018-07-14 | 2018-11-23 | 芜湖凯奥尔环保科技有限公司 | A kind of industrial wastewater filter device for environmental protection equipment |
| CN117303681A (en) * | 2023-12-01 | 2023-12-29 | 山东电力建设第三工程有限公司 | Seawater desalination water quality adjusting and storing device and adjusting process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6146293A (en) | 1984-08-10 | 1986-03-06 | Mitsubishi Heavy Ind Ltd | Method for converting freshwater into drinking water |
| JPS6157292A (en) | 1984-08-29 | 1986-03-24 | Mitsubishi Heavy Ind Ltd | Method for converting fresh water to drinking water |
| US7771599B1 (en) | 2009-03-09 | 2010-08-10 | Doosan Hydro Technology, Inc. | System and method for using carbon dioxide sequestered from seawater in the remineralization of process water |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3105309B2 (en) * | 1991-10-09 | 2000-10-30 | 呉羽化学工業株式会社 | Method and apparatus for improving tap water |
-
2010
- 2010-08-18 KR KR1020100079909A patent/KR100990486B1/en active IP Right Grant
-
2011
- 2011-08-10 WO PCT/KR2011/005861 patent/WO2012023742A2/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6146293A (en) | 1984-08-10 | 1986-03-06 | Mitsubishi Heavy Ind Ltd | Method for converting freshwater into drinking water |
| JPS6157292A (en) | 1984-08-29 | 1986-03-24 | Mitsubishi Heavy Ind Ltd | Method for converting fresh water to drinking water |
| US7771599B1 (en) | 2009-03-09 | 2010-08-10 | Doosan Hydro Technology, Inc. | System and method for using carbon dioxide sequestered from seawater in the remineralization of process water |
Non-Patent Citations (1)
| Title |
|---|
| 논문 : Desalination |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2565165A1 (en) * | 2011-08-31 | 2013-03-06 | Omya Development AG | Remineralization of desalinated and of fresh water by dosing of a calcium carbonate solution in soft water |
| WO2013030185A1 (en) * | 2011-08-31 | 2013-03-07 | Omya Development Ag | Remineralization of desalinated and of fresh water by dosing of a calcium carbonate solution in soft water |
| AU2012301003B2 (en) * | 2011-08-31 | 2016-05-05 | Omya International Ag | Remineralization of desalinated and of fresh water by dosing of a calcium carbonate solution in soft water |
| EP2565165B1 (en) | 2011-08-31 | 2016-08-03 | Omya International AG | Remineralization of desalinated and of fresh water by dosing of a calcium carbonate solution in soft water |
| EA027742B1 (en) * | 2011-08-31 | 2017-08-31 | Омиа Интернэшнл Аг | Remineralization of desalinated and of fresh water by dosing of a calcium carbonate solution in soft water |
| KR101294608B1 (en) | 2011-10-13 | 2013-08-08 | 그린엔텍 주식회사 | Lime dosing system of seawater desalination plant |
| KR101334455B1 (en) * | 2012-08-24 | 2013-11-29 | 한밭대학교 산학협력단 | Purification apparatus for drinking water and distillation |
| KR20210031331A (en) * | 2019-09-11 | 2021-03-19 | 한국기계연구원 | Remineralization apparatus for desalination plant |
| KR102248260B1 (en) | 2019-09-11 | 2021-05-17 | 한국기계연구원 | Remineralization apparatus for desalination plant |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012023742A2 (en) | 2012-02-23 |
| WO2012023742A3 (en) | 2012-12-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100990486B1 (en) | Potabilization method and apparatus for producing potable water from desalinated seawater | |
| JP5873771B2 (en) | Organic wastewater treatment method and treatment apparatus | |
| US20170029307A1 (en) | Method and integral system for treating water for cooling towers and processess requiring removal of silica from the water | |
| JP5836392B2 (en) | Water treatment using bipolar membrane | |
| Ye et al. | Full-scale treatment of landfill leachate by using the mechanical vapor recompression combined with coagulation pretreatment | |
| Lee et al. | Ammonia harvesting via membrane gas extraction at moderately alkaline pH: A step toward net-profitable nitrogen recovery from domestic wastewater | |
| Li et al. | Intermediate concentrate demineralization techniques for enhanced brackish water reverse osmosis water recovery–A review | |
| CA2730920A1 (en) | Method for minimizing corrosion, scale, and water consumption in cooling tower systems | |
| CN104163516B (en) | A kind of reuse method of stainless-steel cold-rolling waste water | |
| WO2010033674A1 (en) | High recovery sulfate removal process | |
| KR101530571B1 (en) | A desalination of cooling tower make-up water and effluent recycling system | |
| WO2002026344A1 (en) | Purification of produced water from coal seam natural gas wells using ion exchange and reverse osmosis | |
| CN102765819A (en) | Self-draining water recycling process of water circulating system | |
| JP2017114705A (en) | Method for producing sodium hypochlorite, and sodium hypochlorite production device | |
| CN104556475A (en) | Pretreatment technology of high-salinity wastewater | |
| Tałałaj | Performance of integrated sequencing batch reactor (SBR) and reverse osmosis (RO) process for leachate treatment: effect of pH | |
| JPH10272494A (en) | Treatment of organic waste water containing salts of high concentration | |
| Elfilali et al. | Performances of various hybrids systems coagulation–ultrafiltration/nanofiltration-reverse osmosis in the treatment of stabilized landfill leachate | |
| RU2383498C1 (en) | Method of obtaining desalinated water and high-purity water for nuclear power plants for research centres | |
| KR101018636B1 (en) | Sewage and wastewater phosphorus removal system and method | |
| KR20140101589A (en) | System for Purification of Hydrogen Fluoride in Waste Water and Apparatus | |
| CN107601729B (en) | Strong salt wastewater zero-discharge treatment process and system for steel industry | |
| KR102266825B1 (en) | Potabilization method and apparatus for producing potable water from desalinated water | |
| KR102305782B1 (en) | Potabilization method and apparatus for producing potable water from desalinated water | |
| JP2008149222A (en) | Removal method of fluorine ions in hot spring water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| A302 | Request for accelerated examination | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20131014 Year of fee payment: 4 |
|
| FPAY | Annual fee payment |
Payment date: 20141001 Year of fee payment: 5 |
|
| FPAY | Annual fee payment |
Payment date: 20151014 Year of fee payment: 6 |
|
| FPAY | Annual fee payment |
Payment date: 20161010 Year of fee payment: 7 |
|
| FPAY | Annual fee payment |
Payment date: 20191014 Year of fee payment: 10 |