KR20010084089A - Powdered inorganic composition for industry waste water disposal - Google Patents
Powdered inorganic composition for industry waste water disposal Download PDFInfo
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- KR20010084089A KR20010084089A KR1020000008869A KR20000008869A KR20010084089A KR 20010084089 A KR20010084089 A KR 20010084089A KR 1020000008869 A KR1020000008869 A KR 1020000008869A KR 20000008869 A KR20000008869 A KR 20000008869A KR 20010084089 A KR20010084089 A KR 20010084089A
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
본 발명은 무기응집제 조성물에 관한 것으로, 좀 더 상세하게는 무기물질인 알루미노실리케이트를 주재료로 하여 산업폐수를 효과적으로 처리할 수 있는 분말상의 무기응집제 조성물에 관한 것이다.The present invention relates to an inorganic coagulant composition, and more particularly, to a powdered inorganic coagulant composition capable of effectively treating industrial wastewater using aluminosilicate as an inorganic material.
일반적으로, 산업폐수를 처리하는데 사용되는 응집제는 유기응집제와 무기응집제로 크게 나눌 수 있다. 유기응집제로는 액상의 고분자 응집제가 사용되고 있으며, 무기응집제로는 액상의 황산알루미늄과 폴리염화알루미늄 등이 사용되고 있다. 또한 사용조건에 따라 pH 조정제를 별도로 사용하고 있으며, 무기응집제, 유기응집제, pH 조정제를 모두 병용하여 사용하는 경우도 있다.In general, flocculants used to treat industrial wastewater can be roughly divided into organic and inorganic flocculants. Liquid organic flocculants are used as the organic coagulant, and liquid aluminum sulfate and polyaluminum chloride are used as the inorganic coagulant. In addition, depending on the conditions of use, a pH adjuster is used separately, and in some cases, an inorganic coagulant, an organic coagulant, and a pH adjuster may be used in combination.
산업폐수를 처리하는데 일반적으로 사용되고 있는 응집제로는 고분자 유기응집제가 많은 부분을 차지하고 있으며 현재까지도 많이 사용되고 있는 실정이다. 그러나, 이러한 고분자 응집제는 폐수의 처리효율은 우수하지만 가격이 비싸다는 단점이 있으며 또한 2차오염에 대한 대처방안이 요구된다.As a coagulant generally used to treat industrial wastewater, a polymer organic coagulant occupies a large part and is still used a lot. However, these polymer flocculants have a disadvantage in that the treatment efficiency of the waste water is excellent but the price is high, and a countermeasure for secondary pollution is required.
무기응집제로는 황산알루미늄이 주로 사용되고 있지만, 이것은 정수장에서 단순한 정수처리에 사용되고 있는 경우가 많으며 중금속 폐수나 부유물질이 많은 폐수에 적용하기는 적당하지 않은 문제점이 있다.Aluminum sulfate is mainly used as an inorganic coagulant, but this is often used for simple water treatment in a water purification plant, and there is a problem that it is not suitable to be applied to heavy metal wastewater or wastewater containing a lot of suspended solids.
또한, 무기응집제, 유기응집제, pH 조정제를 모두 병용하여 사용하는 경우, 여러가지 물질을 첨가하여 응집처리를 함으로써 각각의 물질을 저장하는 설비와 시설이 차지하는 공간이 커지게 되며 처리시간이 길어지는 등의 문제점이 있다.In addition, in the case of using the inorganic coagulant, the organic coagulant, and the pH adjuster together, the flocculation treatment by adding various substances increases the space occupied by the facilities and facilities for storing each substance, and the processing time is long. There is a problem.
본 발명자는 이러한 문제점을 해결하기 위하여 연구를 거듭한 결과, 알루미노실리케이트 물질과 다른 무기물질을 일정비로 혼합함으로써 비교적 광범위한 폐수에 대해서도 응집성을 가지며, 단시간에 플록(flock)을 형성하는 것이 가능하며 형성되는 플록의 안정성이 우수하고 탈수성 및 응집효율이 우수한 분말상의 응집제를 제조하는 것이 가능함을 알게 되었다.The present inventors have conducted studies to solve these problems, and as a result, by mixing aluminosilicate material and other inorganic materials in a constant ratio, the present invention has cohesiveness over a relatively wide range of wastewater, and it is possible to form a flock in a short time. It has been found that it is possible to prepare a powdered flocculant which has excellent stability of flocs and excellent dehydration and flocculation efficiency.
따라서, 본 발명의 목적은 무기물질을 단순히 혼합하여 제조하고 폐수에 첨가하여 교반하는 작용만으로 폐수중에 존재하는 부유물질 및 중금속을 단시간에 제거시킬 수 있는 분말상의 무기응집제 조성물을 제공하는 것이다.Accordingly, it is an object of the present invention to provide a powdered inorganic coagulant composition which can remove floating substances and heavy metals present in the waste water in a short time by simply mixing and preparing the inorganic materials and adding and stirring the waste water.
본 발명은 또한 종래 여러단계의 처리과정을 거치는 폐수처리단계를 단순화시키고, 이에 의해 처리비용을 크게 절감할 수 있는 분말상의 무기응집제 조성물을 제공한다.The present invention also provides a powdery inorganic coagulant composition which can simplify the wastewater treatment step of the conventional multi-step treatment process, thereby greatly reducing the treatment cost.
상술한 목적을 달성하기 위한 본 발명의 분말상의 무기응집제 조성물은 알루미노실리케이트 10∼60중량%, 나트륨염 10∼40중량%, 철염 10∼30중량%, 칼리명반 5∼30중량%, 시멘트 5∼30중량%, 황산알루미늄 5∼20중량%, 석고 0.1∼20중량%를 포함하는 것에 특징이 있다.Powdered inorganic coagulant composition of the present invention for achieving the above object is 10 to 60% by weight of aluminosilicate, 10 to 40% by weight of sodium salt, 10 to 30% by weight of iron salt, 5 to 30% by weight of alum alum, cement 5 It is characterized by including-30 weight%, aluminum sulfate 5-20 weight%, and gypsum 0.1-20 weight%.
한편, 산업폐수에 대한 상기 무기응집제의 바람직한 첨가량은 50∼400mg/L이다.On the other hand, the preferable addition amount of the said inorganic coagulant to industrial wastewater is 50-400 mg / L.
상기 알루미노실리케이트 물질은 벤토나이트 또는 제올라이트가 바람직하며, 상기 나트륨염은 탄산나트륨 및 황산나트륨으로 구성된 군으로부터 하나 또는 이들이 조합되어 선택된다. 상기 철염은 염화제일철, 염화제이철, 황산제일철 및 황산제이철로 구성된 군으로부터 하나 또는 이들의 조합이 선택되는 것이 바람직하다.The aluminosilicate material is preferably bentonite or zeolite, and the sodium salt is selected from the group consisting of sodium carbonate and sodium sulfate, or a combination thereof. The iron salt is preferably selected from the group consisting of ferrous chloride, ferric chloride, ferrous sulfate and ferric sulfate.
이하, 본 발명에 따른 분말상 무기응집제의 구성 및 작용을 구체적으로 설명하기로 한다.Hereinafter, the configuration and action of the powdery inorganic coagulant according to the present invention will be described in detail.
본 발명의 분말상의 무기응집제 조성물은 알루미노실리케이트 물질을 주재료로 하여 나트륨염, 철염, 칼리명반, 시멘트, 황산알루미늄, 석고 등의 고상의 무기물질을 소정비율로 혼합하여 제조된다.The powdery inorganic coagulant composition of the present invention is prepared by mixing a solid inorganic material such as sodium salt, iron salt, kali alum, cement, aluminum sulfate, gypsum and the like at a predetermined ratio using aluminosilicate as a main material.
그 각각의 구성성분과 함량은 다음과 같다.The components and contents of each are as follows.
먼저 주재료로 사용되는 알루미노실리케이트 물질은 무기응집제 총 함량에 대해 10∼60중량%로 사용되며, 벤토나이트나 제올라이트가 바람직하다.First, the aluminosilicate material used as the main material is used in an amount of 10 to 60% by weight based on the total content of the inorganic coagulant, and bentonite or zeolite is preferable.
나트륨염은 무기응집제 총 함량에 대해 10∼40중량%가 사용되는 것이 바람직하다. 나트륨염으로는 탄산나트륨이나 황산나트륨이 단독 또는 조합되어 사용되는 것이 바람직하다.The sodium salt is preferably used 10 to 40% by weight based on the total content of the inorganic coagulant. As the sodium salt, sodium carbonate or sodium sulfate is preferably used alone or in combination.
철염은 무기응집제 총 함량에 대해 10∼30중량%가 사용되는 것이 바람직하다. 상기 철염은 염화제일철, 염화제이철, 황산제일철 및 황산제이철로 구성된 군으로부터 단독 또는 조합되어 사용되는 것이 바람직하다.Iron salt is preferably used 10 to 30% by weight based on the total content of the inorganic coagulant. The iron salt is preferably used alone or in combination from the group consisting of ferrous chloride, ferric chloride, ferrous sulfate and ferric sulfate.
이밖에, 무기응집제 총 함량에 대해 칼리명반 5∼30중량%, 시멘트 5∼30중량%, 황산알루미늄 5∼20중량%, 석고 0.1∼20중량%가 혼합되어 사용된다. 상기 석고는 무수석고가 바람직하다.In addition, 5-30% by weight of Kali alum, 5-30% by weight of cement, 5-20% by weight of aluminum sulfate, and 0.1-20% by weight of gypsum are used with respect to the total content of the inorganic coagulant. The gypsum is preferably anhydrous gypsum.
한편, 산업폐수에 대한 무기응집제의 적정 첨가량은 폐수의 성상에 따라 달라질 수 있으나, 50∼400mg/L를 첨가하는 것이 바람직하다.On the other hand, the appropriate amount of the inorganic coagulant to the industrial wastewater may vary depending on the nature of the wastewater, it is preferred to add 50 ~ 400mg / L.
이와같이, 본 발명의 분말상의 무기응집제는 알루미노실리케이트 물질을 주재료로 하여 나트륨염, 철염, 칼리명반, 시멘트, 황산알루미늄, 석고 등을 소정비율로 혼합하여 사용함으로써 응집이 빠르며 응집된 플록의 크기도 커져 침강속도를 증가시킬 수 있다.As described above, the powdery inorganic coagulant of the present invention uses aluminosilicate material as a main material and mixes sodium salt, iron salt, kali alum, cement, aluminum sulfate, gypsum, etc. in a predetermined ratio so that the flocculation is fast and the size of the flocculated floc is also increased. It can increase to increase the settling speed.
또한 외부 pH 변화에 대한 완충작용을 가지는 것이 가능하여 다양한 pH 범위에서 우수한 응집성능을 발휘하는 것이 가능하다.In addition, it is possible to have a buffering action against external pH changes, it is possible to exhibit excellent cohesive performance in various pH ranges.
이하, 실시예를 통하여 본 발명의 분말상 무기응집제 조성물을 좀 더 구체적으로 설명하지만, 이에 의해 본 발명의 범주가 한정되는 것은 아니다.Hereinafter, the powdery inorganic coagulant composition of the present invention will be described in more detail with reference to Examples, but the scope of the present invention is not limited thereto.
실시예 1∼3 및 비교예 1∼2Examples 1-3 and Comparative Examples 1-2
실시예 1∼3 및 비교예 1∼2의 조성 및 그 함량은 하기 표 1에 기재되어 있으며, 각각의 응집제를 산업폐수에 적용하여 실험한 결과는 하기 표 2에 기재하였다.The compositions and contents of Examples 1 to 3 and Comparative Examples 1 and 2 are shown in Table 1 below, and the results of experiments in which each flocculant was applied to industrial wastewater are shown in Table 2 below.
처리전 탁도(NTU)는 탁도계, SS제거율(%)은 SS제거장치, 중금속 제거율(%)은 ICP(Induced Coupled Plasma)를 이용하여 측정하였다.Turbidity before treatment (NTU) was measured using a turbidimeter, SS removal rate (%) SS removal apparatus, heavy metal removal rate (%) using the ICP (Induced Coupled Plasma).
탁도계는 전투과 광산란 투과광의 측정에 의하여 탁도를 기기에 의해digital화하여 측정하고, SS제거율은 일정부피의 용기와 유리섬유 여과지로 구성된 장치를 이용, 측정대상액을 걸러내어 측정한다.The turbidity meter is measured by measuring the turbidity by the instrument by measuring the transmitted light and the scattered light. The SS removal rate is measured by filtering the measurement liquid using a device composed of a container of a certain volume and glass fiber filter paper.
이상의 설명에서 알 수 있듯이, 본 발명의 분말상의 무기응집제는 현재 많이 사용되고 있는 고분자 유기응집제가 아닌 무기물질을 이용함으로써 산업폐수의 처리효율을 높일 수 있으며 처리공정을 단순화시킴으로써 폐수처리비용을 절감할 수 있는 효과가 있다.As can be seen from the above description, the powdery inorganic coagulant of the present invention can increase the treatment efficiency of industrial wastewater by using inorganic materials other than the polymer organic coagulant, which is currently widely used, and can reduce the wastewater treatment cost by simplifying the treatment process. It has an effect.
상술한 내용은 본 발명을 좀 더 구체적으로 설명하기 위한 것이지, 이러한 내용이 본 발명의 범주를 한정하는 것은 아니며 다양한 변형실시가 가능하다.The above description is intended to explain the present invention in more detail, and the above description does not limit the scope of the present invention and various modifications are possible.
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| KR100340114B1 (en) | 2002-06-10 |
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