KR100258770B1 - A disposer of industrial waste water having a good ability for eliminating a heavy metal and harmful components - Google Patents
A disposer of industrial waste water having a good ability for eliminating a heavy metal and harmful components Download PDFInfo
- Publication number
- KR100258770B1 KR100258770B1 KR1019980013863A KR19980013863A KR100258770B1 KR 100258770 B1 KR100258770 B1 KR 100258770B1 KR 1019980013863 A KR1019980013863 A KR 1019980013863A KR 19980013863 A KR19980013863 A KR 19980013863A KR 100258770 B1 KR100258770 B1 KR 100258770B1
- Authority
- KR
- South Korea
- Prior art keywords
- treatment agent
- rare earth
- harmful components
- industrial wastewater
- wastewater treatment
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
Abstract
Description
본 발명은 산업폐수를 효율적으로 처리하는 처리제에 관한 것으로서 보다 상세하게는 중금속 등의 유해성분이 함유된 폐수중에 첨가되어 추가 제비용의 필요없이 기존의 폐수처리 설비를 이용하여 모든 유해성분을 제거할 수 있는 중금속 및 유해성분의 제거능력이 우수한 산업폐수 처리제에 관한 것이다.The present invention relates to a treatment agent for efficiently treating industrial wastewater, and more particularly, it is added to wastewater containing harmful components such as heavy metals, and thus, it is possible to remove all harmful components by using existing wastewater treatment facilities without additional cost. The present invention relates to an industrial wastewater treatment agent having excellent ability to remove heavy metals and harmful components.
현재, 급속한 산업의 발달로 인해 산업폐수량은 급격히 증가하고 있으며, 이로 인한 수자원의 오염은 날로 심각한 상태에 이르고 있다.At present, due to the rapid development of the industry, the industrial wastewater is increasing rapidly, and the pollution of water resources is getting serious.
이러한 수자원의 오염원으로 작용하는 산업폐수 가운데에서도 특히 중금속, 비소 및 불소 등의 유해성분을 함유한 산업폐수에 의한 환경오염은 그 폐해가 더욱 심각한 상태에 있다.Among industrial wastewaters acting as a pollution source of water resources, the environmental pollution caused by industrial wastewater containing harmful components such as heavy metals, arsenic and fluorine is particularly serious.
이러한 이유로 각국에서는 산업화과정에서 불가피하게 배출되는 공해성물질의 해악에서 벗어나려고 부단한 노력을 기울이고 있으며 여러가지의 산업폐수 처리방법을 시도하고 있으나, 아직도 산업폐수나 폐기물 내에 함유된 유해성분들을 만족스럽게 제거할 수 있는 기술이 제시되지 못하고 있다.For this reason, countries are constantly making efforts to escape the harmful effects of pollutants emitted during the industrialization process, and various industrial wastewater treatment methods have been tried. However, the hazardous substances contained in industrial wastewater or wastes are still satisfactorily removed. There are no technologies available.
이러한 폐수 중에 함유된 각종 유해성분에 의한 폐해 및 처리과정에서의 특징 및 문제점 등을 살펴보면 다음과 같다.Looking at the characteristics and problems in the waste and treatment process caused by various harmful components contained in such waste water as follows.
일반적으로 중금속이 함유된 산업폐수의 경우 대개 전 처리하여 금속의 침전반응에 대해 간섭물질을 제거하고 pH를 조정하거나 중화제를 사용하여 중금속류를 난 용해성의 수산화물이나 염기성 염으로 변화후 배출시켜 고액분리 하고 있다.In general, industrial wastewater containing heavy metals is usually pretreated to remove interferences from metal precipitation reactions, and pH is adjusted, or the heavy metals are converted into poorly soluble hydroxides or basic salts by neutralizing agents, and then discharged into solid solution. have.
먼저, 비소나 카드늄 등은 철이나 알루미늄 등과 공침하므로 이 화합물을 첨가한 후 고액 분리하여 제거하는데, 상기와 같은 공침을 위해 첨가되는 Al, Fe, Cr, Ni 등의 금속이온성분은 그 pH 특성상 중성상태에서는 양성수산화물이 생성되어 음이온으로 재 용해되기 때문에 중화제는 알칼리 대신 소석회(Ca(OH)2)를 사용해야 한다.First, arsenic or cadmium co-precipitates with iron or aluminum, so that this compound is added and then solid-liquid separated. Neutralizers should use calcined lime (Ca (OH) 2 ) instead of alkali because the amphoteric hydroxide is produced and redissolved as anions in the state.
그리고, 폐수 중에는 여러가지 조성이 혼합되어 있기 때문에 평형상태에 이르기 까지 상당한 시간이 걸리며 약알카리 상태에서 수산화물로 침전시키는 것이 부적합할 경우도 있으며, 이 경우 응집제를 이용하여 화학적 응집침전처리후 방류시킨다.In addition, since various compositions are mixed in the wastewater, it may take a considerable time to reach an equilibrium state, and in some cases, precipitation with a hydroxide in a weak alkali state may be inappropriate. In this case, the flocculant is discharged after chemical flocculation sedimentation treatment.
또한, 크롬, 비소, 시안의 경우는 미처리 상태에서 수계로 직접 방류되었을 때 그 독성이 매우 커서 자연 생태계에 악영향을 미치고 있으며, 크롬폐수에서 6가 크롬의 경우 산성영역에서는 Cr2O-이온상태, 알카리영역에서는 CrO4 -2상태로 존재하며 화학적으로 응집제거가 어려워 환원제를 가하여 3가 크롬의 상태로 환원시킨 다음 pH를 7.5∼9.5로 변화시켜 소석회로 침전 제거하고 있으며, 환원제로는 FeSO4, NaHSO3, Na2SO3, SO2등을 사용하고 있다.In the case of chromium, arsenic, and cyanide, when released directly into the water in the untreated state, the toxicity is very high and adversely affects the natural ecosystem.In the case of hexavalent chromium in chromium waste water, in the acidic region, Cr 2 O - ion state, and the alkaline region in the presence as CrO -2 4 3 state, and to chemical change, and then the pH was reduced to the state of chromium 7.5 to 9.5 by adding a reducing agent to remove the difficult to remove agglomerated precipitated with calcium hydroxide, the reducing agent is FeSO 4, NaHSO 3 , Na 2 SO 3 , SO 2 and the like are used.
한편, 카드늄계 폐수중에 함유된 카드늄이온은 그것이 소량이라도 체내에 축적되면 만성중독이 되며 신장세뇨관 장애로 뇨에서 P, Ca의 재흡수가 방해되어 칼슘의 유출이 일어나 골연화증, 골다공증 등의 증상을 발생시키며, 위장장애, 신장장애, 간기능 장애 등을 일으킬 수 있는 유해한 물질로써, 그 처리법으로는 수산화물 침전법, 황화물 침전법, 침전이온 부상법, 이온교환법 등이 있고 현재 수산화물 침전법이 가장 많이 사용되고 있다.On the other hand, cadmium ions contained in cadmium-based wastewater become chronic poisoning if they accumulate in the body even in small amounts. Renal tubular disorders cause re-absorption of P and Ca from urine, causing calcium to leak, resulting in symptoms such as osteomalacia and osteoporosis. It is a harmful substance that can cause gastrointestinal disorders, kidney disorders, liver function disorders, etc. The treatment methods include hydroxide precipitation method, sulfide precipitation method, precipitated ion flotation method, ion exchange method, etc. have.
여기서 수산화물 침전법은 Cd이 산성용액일 경우에는 양이온으로 용해되어 있으나 중성 및 알카리성 용액에서는 난용성인 Cd(OH)2, CdCO3, CdS를 형성시키므로 소석회 등을 주입하여 응집침전, 여과후 침전조에서 고액분리시켜 처리하는데, 현장에서 처리할 경우 이론상 pH는 11이상이나, 너무 pH를 올리면 Al등이 재용출도므로 pH조절에 유의해야 한다.Here, the hydroxide precipitation method is dissolved as a cation when Cd is an acidic solution, but in neutral and alkaline solutions, it forms poorly soluble Cd (OH) 2 , CdCO 3 , and CdS. In case of treatment in the field, in case of treatment in the field, the theoretical pH is over 11, but if the pH is raised too much, Al etc. may be re-dissolved, so be careful to adjust the pH.
비소의 경우 황화광물 처리산업, 유리, 세라믹, 염묘, 제초제 등의 관련공장에서 주로 발생하는데 최근에는 발암물질의 가능성도 제시되고 있을 정도로 그 독성이 이미 잘 알려져 있는 유독성분으로, 이러한 비소를 제거하기 위해서는 비정질 수산화철을 이용하여 안정한 비소화합물로 침전시키는 방법이 공지의 사실로써 이용되어 왔다.Arsenic occurs mainly in the sulfide mineral processing industry, glass, ceramics, seedlings, herbicides, and other related plants. Recently, toxic arsenic is well known to show the possibility of carcinogens. In order to precipitate a stable arsenic compound using amorphous iron hydroxide, a known fact has been used.
이에 관련하여 비소함유 폐수에 칼슘이나 철염을 가하여 안정한 비소화합물로 침전게하는 방법(일본 특허공고 평 3-18159, 평 1-128633, 평 1-28634, 평 1-30555)등이 제시되어 있는데 이들의 경우 칼슘 사용할 때 용액중의 비소량에 비해 상당히 과잉의 칼슘소비가 요구되어 지며 따라서 후공정에 있어 여러가지 불리한 점들이 발생한다.In this regard, a method of adding calcium or iron salts to arsenic-containing wastewater to precipitate into a stable arsenic compound (Japanese Patent Publication Hei 3-18159, Hei 1-128633, Hei 1-28634, Hei 1-30555) has been proposed. In case of using calcium, excessive calcium consumption is required in comparison with the small amount of arsenic in the solution. Therefore, various disadvantages occur in the post process.
또한, 철염사용시에는 폐수중에 존재하는 3가 비소와 5가 비소중 5가 비소의 경우에만 효과적으로 적용된다는 약점이 있어 직접적인 3가 비소의 처리가 용이치 않아 5가 비소로 산화시켜야 한다는 부담이 따른다.In addition, when iron salt is used, it is effectively applied only to trivalent arsenic and pentavalent arsenic in pentavalent arsenic present in the waste water, so that the direct treatment of trivalent arsenic is not easy, and the burden of oxidizing to pentavalent arsenic is burdened.
한편, 불소를 함유하고 있는 폐수는 반도체 제조공장, 금속표면처리공장 등에서 발생되는데 환경규제가 점진적으로 강화될 것이 예상되는바 불소를 효과적으로 제거할 수 있는 방법이 요구되고 있으며, 그 방안으로 칼슘 및 알루미늄화합물을 폐수중에 가하여 불소이온을 불용화하여 고액분리하는 방법(일본 공개특허 소 60-117, 소 62-125894)이 제안되고 있는데 이 방법은 약품사용량 및 잔사 발생량이 많으며, 제거되는 최대 농도도 한계가 있다.On the other hand, wastewater containing fluorine is generated in semiconductor manufacturing plants and metal surface treatment plants, and environmental regulations are expected to be gradually strengthened. Therefore, a method for effectively removing fluorine is required. A method of incorporating a compound into waste water to insoluble fluoride ions and separating solid-liquid (Japanese Patent Laid-Open No. 60-117 and 62-125894) has been proposed. This method has a large amount of chemicals and residues, and a maximum concentration to be removed. There is.
이러한 이유로 최근에는 희토류를 이용하여 폐수중의 불소를 제거하는 방법이 제안되고 있다.For this reason, recently, a method of removing fluorine from wastewater using rare earths has been proposed.
상기와 같이 여러가지 문제점을 발생시키며 그 처리가 난해한 폐수중의 유해성분을 처리하기 위하여 1950년이후 유럽이나 미국에서는 주로 화학적 침전법을 이용하여 폐수나 폐기물내의 유해성분을 제거하였으며, 최근에는 이온교환수지법, 역삼투법, 흡착법, 생물학적 처리 등을 이용하여 중금속을 회수하고, 재활용하는 단계에 까지 이르고 있으나, 만족할만한 효과를 거두지는 못하고 있다.In order to treat the harmful components in the wastewater, which have caused various problems as described above, in Europe or the United States, since 1950, mainly the chemical precipitation method has been used to remove the harmful components in the wastewater or the waste. The use of local methods, reverse osmosis, adsorption, biological treatment, etc., has led to the recovery and recycling of heavy metals, but they have not been satisfactory.
먼저, 화학적 침전법은 처리공정이 단순하고 저가의 화학약품을 사요할 수 있는 반면에 중금속, 비소 및 불소를 저농도까지 제거하는 것이 어렵고 많은 양의 슬러지가 발생하여 이들이 이차오염의 원인으로 작용하기도 한다.First of all, chemical precipitation process is simple and can use low-cost chemicals, while it is difficult to remove heavy metals, arsenic and fluorine to low concentrations, and a large amount of sludge is generated, which may cause secondary pollution. .
그리고, 이온교환수지법은 고도의 처리기술로 폐수 및 폐기물내의 유해성분을 저농도까지 처리하여 처리수를 재사용할 수 있는 장점은 있으나, 설비비 및 운영비가 막대하여 그 적용에 어려움이 있다.In addition, the ion exchange resin method has the advantage that the treatment water can be reused by treating the wastewater and the harmful components in the waste to a low concentration with a high treatment technology, but the installation and operation costs are enormous, which makes it difficult to apply.
따라서, 기존의 설비를 활용하여 단순한 약품첨가만으로 중금속, 비소 및 불소 등 유해성분을 저농도까지 제거함과 동시에 슬러지 발생량을 최소화 하려는 노력이 진행중이다.Therefore, efforts are being made to minimize the amount of sludge generated at the same time by removing harmful components such as heavy metals, arsenic and fluorine by simply adding chemicals using existing facilities.
이러한 노력의 하나로 기능성 다당류라고 불리는 천연 고분자자원의 하나인 키틴(Chitin)을 탈 아세틸화하여 얻은 키토산(Chitosan)의 중금속이온에 대한 흡착성을 이용하여 폐수중의 중금속을 흡착제거하는 처리제가 개발되어 사용되고 있고, 불소 등에 대해 특히 효과적인 희토류가 함유된 처리제가 개발되어 불소 등을 저농도까지 제거하고 슬러지의 발생을 최소화하여 폐수를 처리하고 있다.As one of these efforts, a treatment agent has been developed and used to adsorb and remove heavy metals from wastewater using the adsorption of chitosan, which is one of the natural polymer resources called functional polysaccharides, to chitosan obtained by deacetylation. In addition, a treatment agent containing rare earth, which is particularly effective for fluorine and the like, has been developed to remove fluorine and the like to a low concentration and to minimize the generation of sludge to treat wastewater.
그러나, 상기와 같이 최근에 개발된 처리법도 여러가지 문제점을 안고 있으며 그 내용을 살펴보면 먼저, 키토산수처리제의 경우 Cd, Cu, Fe 등 중금 속의 흡착제거 효과와, COD(화학적 산소 요구량), S.S.(부유물질), 탁도 등에 대한 효과는 뛰어나난, Cr과 같은 유해 중금속이나 비소, 불소 등의 제거율이 떨어지고, 희토류처리제의 경우 비소, 불소, 크롬과 같이 폐수중에서 음이온으로 존재하는 유해성분에 대해서는 매우 뛰어난 효과를 나타내는 반면 특별한 중금 속의 제거능력을 갖고 있지 못하고 특히, COD(화학적 산소 요구량), S.S.(부유물질), 탁도 등에 대한 효과가 미미한 것으로 알려져 있다.However, the recently developed treatment method also has various problems. Looking at the contents, first, in the case of chitosan water treatment agent, adsorption removal effect in heavy metals such as Cd, Cu, Fe, COD (chemical oxygen demand), SS (floating material) ), The removal effect of harmful heavy metals such as Cr, arsenic, fluorine, etc. is excellent, and the rare earth treatment agent has an excellent effect on the harmful components such as arsenic, fluorine, and chromium in the waste water. On the other hand, it does not have the ability to remove specific heavy metals, and in particular, it is known that the effects on COD (chemical oxygen demand), SS (suspension), turbidity, etc. are insignificant.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서 중금속, 비속, 불소, COD, S.S., 탁도 등을 제거할 수 있으며, 크롬, 비소, 불소 등을 침전시켜 모든 유해성분의 처리가 가능하며, 기존의 폐수처리 설비를 그대로 활용할 수 있는 중금속 및 유해성분의 제거능력이 우수한 산업폐수 처리제를 제공하는 것을 그 목적으로 한다.The present invention has been devised to solve the above problems, and can remove heavy metals, fluxes, fluorine, COD, SS, turbidity, etc., and precipitates chromium, arsenic, fluorine, etc., and can process all harmful components. The purpose of the present invention is to provide an industrial wastewater treatment agent that has excellent ability to remove heavy metals and harmful components that can utilize existing wastewater treatment facilities.
상기와 같은 목적을 달성하기 위하여 본 발명은 중량%로 25∼50%의 키토산, 50∼75%의 희토류 화합물로 이루어지는 것을 특징으로 하는 키토산과 희토류화합물을 이용한 산업폐수 처리제를 제공한다.In order to achieve the above object, the present invention provides an industrial wastewater treatment agent using a chitosan and a rare earth compound, characterized in that it comprises 25 to 50% chitosan and 50 to 75% rare earth compounds by weight.
그리고 상기 상기 산업폐수 처리제를 산성용액에 용해하여 액상으로 하되 희토류화합물의 농도는 100∼200g/ℓ, 키토산의 농도는 50∼100g/ℓ로 하는 것을 특징으로 한다.The industrial wastewater treatment agent is dissolved in an acidic solution to form a liquid, but the concentration of the rare earth compound is 100 to 200 g / l and the concentration of chitosan is 50 to 100 g / l.
또한, 상기 희토류 화합물은 질산염과 염산염의 형태로 첨가되며, 산도조절은 질산 또는 염산으로 하고 pH농도가 2.5∼3.5 인 것을 특징으로 한다.In addition, the rare earth compound is added in the form of nitrate and hydrochloride, the acidity control is characterized in that the nitric acid or hydrochloric acid and the pH concentration is 2.5 to 3.5.
이하, 본 발명의 수치한정의 이유에 대하여 설명한다.Hereinafter, the reason for numerical limitation of this invention is demonstrated.
먼저, 키토산의 첨가범위를 25∼50중량%로 한정하는 이유는 25중량% 미만을 첨가하면 중금속 성분중 카드늄 등의 제거효과가 떨어지기 때문이고, 50중량%를 초과하여 첨가하면 크롬, 비소 등의 제거효율이 미미하기 때문이다.First, the reason for limiting the addition range of chitosan to 25 to 50% by weight is that the addition of less than 25% by weight is less effective in removing the cadmium, etc. in the heavy metal components, and when added in excess of 50% by weight chromium, arsenic, This is because the removal efficiency of is insignificant.
그리고, 희토류화합물의 첨가범위를 50∼75중량%로 한정하는 이유는 희토류화합물을 50중량% 미만으로 첨가하면 불소의 제거효과가 떨어지기 때문이고, 75중량%를 초과하여 첨가하면 상대적으로 키노산이 적게 함유되어 중금속 제거효과가 미약해지기 때문이다.The reason why the addition range of the rare earth compound is limited to 50 to 75% by weight is that the addition of the rare earth compound to less than 50% by weight reduces the fluorine removal effect. This is because it contains less and the effect of removing heavy metals is weak.
또한, 산업폐수처리제에 물을 첨가하여 액상으로 제조시 희토류화합물의 농도를 100∼200g/ℓ, 키토산의 농도를 50∼100g/ℓ로 각각 한정하는 이유는 희토류화합물의 농도가 200g/ℓ를 초과하게 되면 겨울철 등의 저온에서 많은 양의 침전이 발생하기 때문이고, 100g/ℓ미만일 경우 본 산업폐수처리제에 의한 침전물의 크기가 너무 미세하여 여과과정에서 상기 침전물이 여과되지 않아 그 효과가 떨어지고, 농도가 너무 묽어 과다한 처리액의 필요와 그에 따른 설비의 대형화로 인한 비용의 증대를 가져오기 때문이다.In addition, the reason for limiting the concentration of rare earth compounds to 100 to 200 g / l and the concentration of chitosan to 50 to 100 g / l when adding them to the industrial wastewater treatment agent in the liquid phase is that the concentration of the rare earth compounds exceeds 200 g / l. This is because a large amount of precipitation occurs at low temperatures, such as winter, if less than 100g / ℓ the size of the precipitate by the industrial wastewater treatment agent is too fine, the precipitate is not filtered during the filtration process, the effect is reduced, the concentration Is too thin, which leads to an increase in costs due to the need for excessive treatment liquids and the size of the equipment.
그리고, 키토산의 농도를 50∼100g/ℓ로 한정하는 이유는 키토산은 희토류화합물과 함께 첨가시 효과의 극대화를 위해 중량%로 상기 희토류화합물의 ½이 첨가되기 때문이다.The reason for limiting the concentration of chitosan to 50 to 100 g / L is that chitosan is added in a weight% ½ of the rare earth compound to maximize the effect when added together with the rare earth compound.
산폐수처리제의 pH를 2.5∼3.5로 한정하는 이유는 pH 2.5 이상에서는 산도가 너무 높아 수처리 방류시 중화하는데 알카리약품의 소모가 많아지기 때문이고, pH를 3.5 미만으로 한정한 이유는 키토산이 약산성에서만 용해되며 그 최대값이 pH 3.5이기 때문이다.The reason for limiting the pH of the acid wastewater treatment agent to 2.5 to 3.5 is that the acidity is too high at pH 2.5 and higher, so that the alkali chemicals are consumed to neutralize during the discharge of water. The reason for limiting the pH to less than 3.5 is that chitosan is only weakly acidic. Dissolve and its maximum value is pH 3.5.
이하, 실시예를 들어 본 발명을 보다 상세하게 설명한다.Hereinafter, an Example is given and this invention is demonstrated in detail.
〈실시예〉<Example>
키토산과 희토류화합물의 농도를 달리하여 3종류을 만들고 물을 가하여 pH가 2.5∼3.0이 되도록 조정하여 산업폐수 처리제를 제조하며, 그 구성은 A : 키토산 100g/ℓ, 희토류화합물 100g/ℓ, B : 키토산 50g/ℓ, 희토류화합물 150g/ℓ, C : 키토산 150g/ℓ, 희토류화합물 50g/ℓ로 하였다.Prepare three kinds by changing the concentration of chitosan and rare earth compounds, and adjust the pH to 2.5 ~ 3.0 to make industrial wastewater treatment agent.The composition is A: chitosan 100g / ℓ, rare earth compound 100g / ℓ, B: chitosan 50 g / l, rare earth compound 150g / l, C: chitosan 150g / l, rare earth compound 50g / l.
한편, 1000ppm의 대조금속용액(Reference Solution)으로 Al3+, Ca2+, Cd2+, Cr6+,Fe2+, Ni2+, Pb2+, Zn2+, F-, As3+의 11가지 금속염을 혼합하여 각각 20ppm의 농도가 되도록 인공폐수를 조제한다.On the other hand, 1000ppm of the control metal solution (Reference Solution) as Al 3+, Ca 2+, Cd 2+ , Cr 6+, Fe 2+, Ni 2+, Pb 2+, Zn 2+, F -, As 3+ 11 kinds of metal salts are mixed and the artificial wastewater is prepared to have a concentration of 20 ppm each.
이후 상기의 인공폐수에 산업폐수 처리제 A, B, C를 4㎖ 첨가한 후 강하게 교반한 후 20분간 정치하였다가 상등액의 잔류원소를 원자흡관 분석기(AAS)와 불소이온미터로 측정하였고, 제거율은 아래식에 의거 계산하였다.After adding 4 ml of industrial wastewater treatment agents A, B, and C to the artificial wastewater, the mixture was stirred vigorously, and allowed to stand for 20 minutes. The residual elements of the supernatant were measured by atomic absorption analyzer (AAS) and fluorine ion meter. It calculated based on the following formula.
한편, 비교를 위하여 200g/ℓ 키토산 수처리제와 희토류산화물 농도가 200g/ℓ인 희토수 처리제를 각각 4㎖씩 첨가하여 같은 방법으로 실험하였다.On the other hand, for comparison, a 200 g / L chitosan water treatment agent and a rare earth water treatment agent having a rare earth oxide concentration of 200 g / L were added to each of 4 ml and tested in the same manner.
표 1.Table 1.
또한, 상기와 같이 중금속이 다량함유되어 있는 도금폐수에 인위적으로 비소, 불소, Cd화합물을 첨가하여 더욱 복잡한 폐수를 만들어 본 발명에 의한 개발품 A를 이용하여 제거실험을 실시하였으며, 원폐수의 조성과 실험결과를 하기 표 2에 나타내었다.In addition, as described above, arsenic, fluorine, and Cd compounds were artificially added to the plating wastewater containing a large amount of heavy metals to make more complex wastewater, and the removal experiment was conducted using the developed product A according to the present invention. The experimental results are shown in Table 2 below.
표 2.Table 2.
상기와 같은 본 발명에 의한 산폐수 처리제에 의해 중금속, 비속, 불소, COD, S.S., 탁도 등 모든 유해성분의 처리가 가능하며 기존의 폐수처리 설비를 그대로 활용할 수 있어 비용절감을 꾀할 수 있다.By the acid wastewater treatment agent according to the present invention as described above, it is possible to treat all harmful components such as heavy metals, fluxes, fluorine, COD, S.S., turbidity, and can use existing wastewater treatment facilities as it is, thereby reducing costs.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980013863A KR100258770B1 (en) | 1998-04-17 | 1998-04-17 | A disposer of industrial waste water having a good ability for eliminating a heavy metal and harmful components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980013863A KR100258770B1 (en) | 1998-04-17 | 1998-04-17 | A disposer of industrial waste water having a good ability for eliminating a heavy metal and harmful components |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19990080537A KR19990080537A (en) | 1999-11-15 |
| KR100258770B1 true KR100258770B1 (en) | 2000-06-15 |
Family
ID=19536408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019980013863A KR100258770B1 (en) | 1998-04-17 | 1998-04-17 | A disposer of industrial waste water having a good ability for eliminating a heavy metal and harmful components |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100258770B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100546484B1 (en) * | 1999-01-28 | 2006-01-26 | 주식회사 효성 | The Manufacturing Method for a High Molecular Coagulant of Chitosan Group |
| KR100435475B1 (en) * | 1999-12-27 | 2004-06-10 | 주식회사 포스코 | A Solution for Removing Fluorine Ion Having Simultaneous Removal Effect of COD and CN and A Treatment Method of Wastewater Using It |
| KR102055013B1 (en) | 2018-02-08 | 2019-12-12 | 주식회사세신금속 | The treatment reagent of heavy metal waste water having the active ingredient of the sulfide and silicic acid and method thereof |
-
1998
- 1998-04-17 KR KR1019980013863A patent/KR100258770B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR19990080537A (en) | 1999-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4343706A (en) | Method of removing heavy metals from industrial waste streams | |
| US6802980B1 (en) | Arsenic removal in conjunction with lime softening | |
| Ayoub et al. | Heavy metal removal by coagulation with seawater liquid bittern | |
| US7077963B2 (en) | Processes for water treatment | |
| US20090120881A1 (en) | Treatment blends for removing metals from wastewater, methods of producing and process of using the same | |
| McAnally et al. | Nickel removal from a synthetic nickel-plating wastewater using sulfide and carbonate for precipitation and coprecipitation | |
| US6110379A (en) | Method for treating water containing sulfate | |
| Naim et al. | Precipitation chelation of cyanide complexes in electroplating industry wastewater | |
| KR100702065B1 (en) | Water treatment particle for simultaneously removal of suspend solid, nitrate and phosphate | |
| US10730768B2 (en) | Method for reducing selenium and heavy metals in industrial wastewaters | |
| KR100258770B1 (en) | A disposer of industrial waste water having a good ability for eliminating a heavy metal and harmful components | |
| CA2933998A1 (en) | Methods for removing contaminants from aqueous systems | |
| CN105293659A (en) | Stabilization method for emergently treating sediment of heavy metal pollutants in water body | |
| US6251283B1 (en) | Methods for removing selenium from a waste stream | |
| USH1126H (en) | Treatment of sodium nitrite-containing boiler wastewater | |
| Sadeghi et al. | Removal of lead ions from industrial wastewater using precipitation process. | |
| US4707273A (en) | Manganese removal from aqueous industrial waste effluents | |
| WO2018165650A1 (en) | Mixed aluminum (iii) and iron (ii) salt solution for enhancing the hybrid zero-valent iron media system reactivity for treating metal-contaminated wastemater | |
| Reinsel | A new process for sulfate removal from industrial waters | |
| EP1493716A1 (en) | Method of wastewater treatment | |
| JPS61161191A (en) | Treatment of heavy metal ion-containing solution | |
| Tahir et al. | Methods of removing heavy metal ions from waste waters: a review | |
| JP2011031229A (en) | Method for treating heavy metal in seawater | |
| Aulenbach et al. | Heavy metals removal in a rapid infiltration sand column | |
| KR910004082B1 (en) | Heavy metal waste treating materical |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20100312 Year of fee payment: 11 |
|
| LAPS | Lapse due to unpaid annual fee |