KR20150075406A - Inorganic compound coagulant composition containing degradable organic matter for industrial wastewater treatment, and using industrial wastewater treatment methods - Google Patents
Inorganic compound coagulant composition containing degradable organic matter for industrial wastewater treatment, and using industrial wastewater treatment methods Download PDFInfo
- Publication number
- KR20150075406A KR20150075406A KR1020150085065A KR20150085065A KR20150075406A KR 20150075406 A KR20150075406 A KR 20150075406A KR 1020150085065 A KR1020150085065 A KR 1020150085065A KR 20150085065 A KR20150085065 A KR 20150085065A KR 20150075406 A KR20150075406 A KR 20150075406A
- Authority
- KR
- South Korea
- Prior art keywords
- chloride
- industrial wastewater
- organic matter
- wastewater
- cod
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
Landscapes
- Chemical & Material Sciences (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)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
본 발명은 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물과 이의 제조 및 이를 이용한 산업폐수 처리방법에 관한 것으로, 특히 종래의 물리화학적 처리 및 생물학적 처리에도 분해되지 않는 유기물 함유 난분해성 COD 물질을 처리하는 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물과 이의 제조 및 이를 이용한 산업폐수 처리방법에 관한 것이다.The present invention relates to an inorganic composite coagulant composition for the treatment of industrial wastewater containing a refractory organic material, and a method for treating industrial wastewater using the same. More particularly, the present invention relates to an organic composite refractory COD material And an industrial wastewater treatment method using the composite coagulant composition.
일반적으로 석유를 원료로 하는 합성고분자 화합물들은 원래 자연계에는 존재하지 않는 난분해성 물질들로서, 사용 후 발생하는 폐수로 인한 수질오염의 커다란 원인물질이 되어 그 처리문제가 심각하게 대두되고 있다.Generally, synthetic polymer compounds using petroleum as raw materials are raw materials that are not decomposed in the natural world, and they become a major cause of water pollution caused by wastewater generated after use.
석유산업, 축산, 제지산업, 염료산업, 각종 실험실 등 유기물을 방출하는 산업폐수와 에너지 산업 중 원자력 발전소에서 발생하는 유기물 폐수는 회전기기에 사용되는 윤활유, 각 열교환기 및 계통에 부식을 방지하는 약품 등으로 인해 생성된 것으로서 원전에서는 폐수처리장치에 유기물 제거가 반영되어 있지 않았기 때문에 처리하기가 곤란하다.Industrial wastewater that emits organic matter such as petroleum industry, livestock industry, paper industry, dye industry and various laboratories and organic wastewater generated from nuclear power plant in the energy industry is used to prevent corrosion in lubricating oil, heat exchanger and system used in rotating equipment Etc., and it is difficult to treat the waste water treatment apparatus because the waste water treatment apparatus does not reflect the removal of organic matter.
염색폐수에 다량 포함되어 있는 염료는 난분해성 물질로 그 처리 방안에 관한 연구가 진행되고 있다.Dye, which is abundantly contained in dyeing wastewater, is a refractory material and its treatment is being studied.
미생물 고정화를 이용한 유기물 제거, 한외 여과막을 이용한 폐수 내에 유기물 제거, H2O2를 이용한 산화 공정, Photo-Fenton 법을 이용한 유기물로 인한 COD 감소 등이 연구되고 있다.Removal of organic matter using microbial immobilization, removal of organic matter in wastewater using ultrafiltration membrane, oxidation process using H 2 O 2 , reduction of COD due to organic matter using Photo-Fenton method, and so on.
하지만, 유기물 함유 폐수는 COD가 높은 난분해성 물질이기 때문에 하천에 방류하는 경우, 자연정화를 거의 기대할 수 없는 수질오염의 원인물질이 된다.However, organic wastewater is a highly degradable substance with high COD, and therefore, when discharged into rivers, it becomes a cause of water pollution which can hardly be expected to be purified.
그리고 폐수의 잔존 유기물의 처리방법으로 활성오니법을 주로 이용하고 있는데, 운영상의 문제점으로 불충분한 분해 상태로 희석, 방류되고 있다.The activated sludge process is mainly used as a treatment method for residual organic matter in wastewater. However, it is diluted and discharged in an insufficient decomposition state due to operational problems.
최근에 폐수 중의 현탁물과 용존물을 동시에 처리하는 전해법에 의한 폐수처리방법을 이용한 유기물 함유 폐수처리가 연구되고 있으나 산업현장에 적용하기는 어려움이 있다.Recently, the treatment of wastewater containing organics by the electrolytic method which simultaneously treats suspensions and dissolved substances in wastewater has been studied, but it is difficult to apply it to industrial sites.
이에, 본 발명은 상기한 바와 같은 제문제점을 해결하기 위해 안출된 것으로, 종래의 물리화학적 처리 및 생물학적 처리에도 분해되지 않는 유기물 함유 난분해성 COD 물질을 선택적으로 처리하여, COD를 제거할 수 있도록 한 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물과 이의 제조 및 이를 이용한 산업폐수 처리방법을 제공하는데 그 목적이 있다.DISCLOSURE OF INVENTION Technical Problem Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for selectively removing COD substances containing organic substances, which are not decomposed by conventional physicochemical treatment and biological treatment, The present invention relates to an inorganic composite coagulant composition for treating industrial wastewater containing a decomposable organic material, a process for producing the same and an industrial wastewater treatment method using the same.
상기한 목적을 달성하기 위한 본 발명에 따른 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물은 염화제일철, 염화제이철, 염화마그네슘, 염화칼슘, 염화코발트, 염화니켈 및 이들의 혼합물로 이루어진 그룹으로부터 어느 하나의 물질을 선택하고, 이를 기준으로 다른 물질을 1 내지 5중량부 혼합한 것을 특징으로 한다.In order to accomplish the above object, the present invention provides an inorganic composite flocculant composition for treating industrial wastewater containing a refractory organic compound, which comprises a ferric chloride, a ferric chloride, a magnesium chloride, a calcium chloride, a cobalt chloride, a nickel chloride, One of the materials is selected, and 1 to 5 parts by weight of other materials are mixed based on the selected material.
또한, 상기한 목적을 달성하기 위한 본 발명에 따른 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물 제조방법은 염화제일철, 염화제이철, 염화마그네슘, 염화칼슘, 염화코발트, 염화니켈 및 이들의 혼합물로 이루어진 그룹으로부터 어느 하나의 물질을 선택하고, 이를 기준으로 다른 물질을 1 내지 5중량부 혼합하여 제조함을 특징으로 한다.In order to accomplish the above object, the present invention also provides a method for preparing an inorganic composite flocculant composition for treating industrial wastewater containing a refractory organic material, comprising the steps of: preparing ferrous chloride, ferric chloride, magnesium chloride, calcium chloride, cobalt chloride, , And 1 to 5 parts by weight of other materials are mixed based on the selected material.
그리고 상기한 목적을 달성하기 위한 본 발명에 따른 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물을 이용한 산업폐수 처리방법은 처리 대상 유기물 함유 폐수에 염화제일철, 염화제이철, 염화마그네슘, 염화칼슘, 염화코발트, 염화니켈 및 이들의 혼합물로 이루어진 그룹으로부터 어느 하나의 물질을 선택하고, 이를 기준으로 다른 물질을 1 내지 5중량부 혼합하며, 상기 염화제일철과 염화마그네슘의 중량비를 1:1∼1:2로 구성한 것인 난문해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물을 주입하여 반응하는 단계(S 10); 가성소다와 황산으로 구성되는 pH 조절제를 첨가하여 소정의 pH로 조절하는 단계(S 20); 고분자 응집제로 구성된 응집보조제를 주입하는 단계(S 30); 응집 및 침전단계(S 40); 상등액을 활성탄에 통과시키는 단계(S 50)로 이루어지고, 상기 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물을 처리 대상 유기물 함유 폐수의 총중량에 대하여 0.01∼3중량%, pH는 9∼12로 처리함을 특징으로 한다. In order to accomplish the above object, the present invention provides a method for treating industrial wastewater using an inorganic composite coagulant composition for treating industrial wastewater, which comprises a refractory organic material, comprising the steps of: adding iron chloride, ferric chloride, magnesium chloride, Wherein the weight ratio of the ferrous chloride to the magnesium chloride is 1: 1 to 1: 1, and the weight ratio of the ferrous chloride to the magnesium chloride is 1: 1 to 1: (S 10) by injecting an inorganic composite flocculant composition for treating industrial wastewater containing an acid-labile organic substance, Adding a pH adjusting agent composed of caustic soda and sulfuric acid to a predetermined pH (S 20); (S30) injecting a flocculant aid composed of a polymer flocculant; Aggregation and precipitation step (S40); (S 50), and the inorganic composite coagulant composition for treating industrial wastewater containing the poorly decomposable organic matter is added in an amount of 0.01 to 3 wt% based on the total weight of the organic matter-containing wastewater to be treated, 12 < / RTI >
이상에서 설명한 바와 같이, 본 발명에 따른 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물과 이의 제조 및 이를 이용한 산업폐수 처리방법은 물리화학적 처리 및 생물학적 처리로 난분해성 물질인 유기물에 의해 유발되는 COD를 제거하는 폐수처리제로 FeCl2 와 MgCl2를 사용하여 복합 응집제를 제조하고 비율은 1:1로 하면 가장 좋은 것으로 확인했다. 유기물 함유 폐수 처리공정은 pH를 10.0∼11.0로 조절하고 FeCl2 /MgCl2 복합 응집제를 주입한 후, 응집보조제인 고분자 응집제(anionic polyacrylamide)를 투입하여 응집 및 침전한다. 상등액을 활성탄 탑을 거친다. 이것을 사용하여 난분해성 유기물로 유발된 COD 폐수 시료에 적절한 양의 복합 응집제를 주입하면 COD를 고효율로 제거할 수 있는 이점이 있다.As described above, the inorganic composite coagulant composition for the treatment of industrial wastewater containing a refractory organic substance according to the present invention, its preparation, and the industrial wastewater treatment method using the same, can be produced by physicochemical treatment and biological treatment, As a wastewater treatment agent to remove COD, FeCl 2 And MgCl 2 were used to make composite coagulants. The ratio of 1: 1 was the best. The organic wastewater treatment process adjusted the pH to 10.0-11.0 and added FeCl 2 / MgCl 2 complex coagulant, and anionic polyacrylamide, which is a coagulant, is added to coagulate and precipitate. The supernatant is passed through an activated carbon tower. Using this method, COD can be removed with high efficiency by injecting an appropriate amount of a coagulant into a COD waste water sample induced by a decomposable organic substance.
도 1은 본 발명에 따른 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물을 이용하여 유기물 함유 폐수를 처리하는 과정을 도시한 공정도,
도 2는 pH 11에서 복합 응집제의 Fe/Mg의 비율에 따른 COD 제거효율을 나타낸 그래프,
도 3은 pH 11에서 복합 응집제의 Fe/Mg=1과 Fe/Mg=5의 농도에 따른 COD 제거효율을 나타낸 그래프,
도 4는 복합 응집제의 pH에 따른 Zeta potential를 나타낸 그래프,
도 5는 pH=2에서 복합 응집제의 입자 분포를 나타낸 그래프,
도 6은 pH=11에서 복합 응집제의 입자 분포를 나타낸 그래프,
도 7은 각기 다른 COD농도의 유기물을 함유한 폐수의 COD 제거효율을 나타낸 그래프.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram showing a process for treating an organic substance-containing wastewater using an inorganic complex coagulant composition for treating industrial wastewater containing a refractory organic substance according to the present invention;
2 is a graph showing the COD removal efficiency according to the Fe / Mg ratio of the complex coagulant at pH 11,
FIG. 3 is a graph showing the COD removal efficiency according to the concentration of Fe / Mg = 1 and Fe / Mg = 5 of the complex coagulant at pH 11,
4 is a graph showing the Zeta potential according to the pH of the composite flocculant,
5 is a graph showing the particle distribution of the composite flocculant at pH = 2,
Figure 6 is a graph showing particle distribution of the composite flocculant at pH = 11,
FIG. 7 is a graph showing COD removal efficiency of wastewater containing organic matter having different COD concentrations. FIG.
이하, 본 발명을 첨부한 예시도면을 참조하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
본 발명에 따른 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물은 염화제일철, 염화제이철, 염화마그네슘, 염화칼슘, 염화코발트, 염화니켈 및 이들의 혼합물로 이루어진 그룹으로부터 어느 하나의 물질을 선택하고, 이를 기준으로 다른 물질을 1 내지 5중량부 혼합한 것이다.The inorganic composite coagulant composition for treating industrial wastewater according to the present invention is prepared by selecting any one material from the group consisting of ferrous chloride, ferric chloride, magnesium chloride, calcium chloride, cobalt chloride, nickel chloride and mixtures thereof , And 1 to 5 parts by weight of other materials are mixed based on this.
또한, 본 발명에 따른 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물 제조방법은 염화제일철, 염화제이철, 염화마그네슘, 염화칼슘, 염화코발트, 염화니켈 및 이들의 혼합물로 이루어진 그룹으로부터 어느 하나의 물질을 선택하고, 이를 기준으로 다른 물질을 1 내지 5중량부 혼합하여 제조한다.The method for preparing an inorganic composite coagulant composition for treating industrial wastewater according to the present invention is a method for preparing an inorganic composite coagulant composition for treating industrial wastewater, comprising the steps of: The materials are selected and mixed with 1 to 5 parts by weight of other materials on the basis thereof.
도 1은 본 발명에 따른 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물을 이용하여 유기물 함유 폐수를 처리하는 과정을 도시한 공정도이다.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram showing a process of treating an organic substance-containing wastewater using an inorganic complex coagulant composition for treating industrial wastewater containing a refractory organic substance according to the present invention.
이 도면에 도시된 바와 같이, 본 발명에 따른 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물을 이용한 산업폐수 처리방법은 처리 대상 유기물 함유 폐수에 염화제일철, 염화제이철, 염화마그네슘, 염화칼슘, 염화코발트, 염화니켈 및 이들의 혼합물로 이루어진 그룹으로부터 어느 하나의 물질을 선택하고, 이를 기준으로 다른 물질을 1 내지 5중량부 혼합한 것인 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물을 주입하여 반응하는 단계(S 10); pH 조절제를 첨가하여 소정의 pH로 조절하는 단계(S 20); 응집보조제를 주입하는 단계(S 30); 응집 및 침전단계(S 40); 상등액을 활성탄에 통과시키는 단계(S 50)로 이루어진다.As shown in this figure, the method for treating industrial wastewater using the inorganic complex coagulant composition for treating industrial wastewater according to the present invention is characterized in that ferrous chloride, ferric chloride, magnesium chloride, calcium chloride, Wherein the inorganic complex coagulant composition for treating industrial wastewater containing a refractory organic material selected from the group consisting of cobalt chloride, nickel chloride, and mixtures thereof is mixed with 1 to 5 parts by weight of other materials (S 10); adding a pH adjusting agent to adjust the pH to a predetermined value (S 20); Injecting a coagulation assistant (S30); Aggregation and precipitation step (S40); And passing the supernatant through activated carbon (S50).
또한, 상기 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물을 처리 대상 유기물 함유 폐수의 총중량에 대하여 0.01∼3중량%, pH는 9∼12로 한다.The inorganic composite coagulant composition for treating industrial wastewater containing the poorly decomposable organic matter is 0.01 to 3% by weight based on the total weight of the organic matter-containing wastewater to be treated and the pH is 9 to 12.
그리고 상기 pH조절제는 가성소다와 황산으로 구성된다.And the pH adjusting agent is composed of caustic soda and sulfuric acid.
또한, 상기 응집보조제는 고분자 응집제(anionic polyacrylamide)로 구성된다.In addition, the coagulation assistant is composed of anionic polyacrylamide.
즉, 본 발명에 따른 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물을 이용한 산업폐수 처리방법은 난분해성 유기물을 함유한 산업폐수가 사용되어야 하므로 동 폐수의 COD농도는 900ppm∼2,500ppm 이었고, 처리 약제로는 단일응집제로 염화제일철, 염화제이철, 염화마그네슘, 염화칼슘, 염화코발트, 염화니켈 및 이들의 혼합물로 이루어진 그룹으로부터 선택된 어느 하나의 무기 염화물 및 이를 혼합한 복합 응집제를 사용하여 비교하였고, 가성소다와 황산을 pH 조절제로 사용하였다. 응집보조제로는 고분자 응집제(anionic polyacrylamide)를 용해하여 사용하였다. COD분석은 수질오염공정시험법을 이용하였고, 응집제의 특성을 확인하기 위하여 zeta-potential meter 및 nano-size 분석은 dynamic scattering zeta potential analyzer 와 nano-size 측정은 particle size analyzer를 사용하였다.That is, in the industrial wastewater treatment method using the inorganic composite coagulant composition for treating industrial wastewater according to the present invention, since the industrial wastewater containing the poorly decomposable organic matter should be used, the COD concentration of the wastewater was 900 ppm to 2,500 ppm , And as the treating agent, a single coagulant was compared with any one of inorganic chlorides selected from the group consisting of ferrous chloride, ferric chloride, magnesium chloride, calcium chloride, cobalt chloride, nickel chloride and mixtures thereof and a complex coagulant mixed therewith. Caustic soda and sulfuric acid were used as pH regulators. Anionic polyacrylamide was used as the coagulant. For COD analysis, water pollution process test method was used. To confirm the characteristics of coagulant, dynamic scattering zeta potential analyzer for zeta-potential meter and nano-size analysis and particle size analyzer for nano-size measurement were used.
Fe염과 Mg염을 사용하여 제조한 복합 응집제의 FeCl2/MgCl2 비율에 따른 영향을 확인하였다. 시료는 유기물을 용해하여 제조한 폐수를 사용하였고, 응집제로는 FeCl2 와 MgCl2의 중량비를 일정한 비율로 조합하였다.Effect of FeCl 2 / MgCl 2 ratio of composite flocculant prepared by Fe salt and Mg salt was confirmed. Wastewater prepared by dissolving organic matter was used as the sample, and FeCl 2 And MgCl 2 were combined at a constant ratio.
도 2는 FeCl2 와 MgCl2 의 중량비를 변화시키면서 COD농도 1,000ppm으로 pH=11인 폐수에 주입한 COD 제거율을 도시한 것이다.2 is FeCl 2 And MgCl 2 , while changing the weight ratio of MgCl 2 to COD concentration of 1,000 ppm.
급속혼합을 1분간 실시하고, 15분간 완속 혼합을 하였고, 30분간 정치하여 SV30을 확인하였다. 그리고 상등액을 이용하여 COD를 관찰하였다. 유기물 함유 폐수에 1,000ppm의 MgCl2, FeCl2, FeCl3 단일 응집제를 사용하여 53%, 46%, 15% COD 제거율을 얻었고, FeCl2 와 MgCl2 를 사용한 복합 응집제 중량비로 1:1일 때 56%의 제거율을 얻었다. 2,000ppm인 경우 84% 제거율을 얻을 수 있었다. SV30을 관찰에 따르면 Fe 와 Mg의 비가 1:1과 2:1인 경우는 20이었고, 3:1∼5:1에 이르기까지 18로 거의 비슷했다. FeCl2 와 MgCl2의 중량비 1:1과 2:1은 동일한 COD제거율을 나타냈다. FeCl2 대비 MgCl2 양을 비율적으로 증가시켰다. MgCl2의 양을 2, 3, 4, 5로 증가시켜 응집 및 침전 후 COD를 분석한 결과는 도 2에 도시하였다. FeCl2/MgCl2 비율에서 FeCl2 비가 높아질수록 COD 감소율은 낮아졌다. 또한, FeCl2 /MgCl2의 비가 2를 초과한 경우에도 COD 제거율은 감소하였다.Rapid mixing was carried out for 1 minute, gradual mixing was carried out for 15 minutes, and SV 30 was confirmed by standing for 30 minutes. COD was observed using the supernatant. COD removal rates of 53%, 46%, and 15% were obtained by using 1,000 ppm of MgCl 2 , FeCl 2 , and FeCl 3 single coagulant in organic wastewater. FeCl 2 And MgCl 2 , a removal ratio of 56% was obtained at 1: 1 weight ratio. In case of 2,000 ppm, 84% removal rate was obtained. According to observations of SV 30 , Fe And Mg ratio was 20 for 1: 1 and 2: 1, respectively, and was almost similar to 18 for 3: 1 to 5: 1. FeCl 2 And MgCl 2 in the weight ratio of 1: 1 and 2: 1 showed the same COD removal rate. FeCl 2 was increased compared to the MgCl 2 amount proportionally. The amount of MgCl 2 was increased to 2, 3, 4, and 5, and the results of COD analysis after agglomeration and precipitation are shown in FIG. The FeCl 2 / MgCl 2 ratio decreased as the FeCl 2 ratio increased. Also, FeCl 2 / MgCl 2 ratio exceeded 2, COD removal rate decreased.
도 3은 FeCl2/MgCl2=1, FeCl2/MgCl2=1/5의 복합 응집제를 제조하여 pH 11인 폐수에 농도를 변화시키면서 확인한 결과이다. FeCl2/MgCl2=1인 복합 응집제는 FeCl2 /MgCl2=1/5 응집제에 비해 30∼40% 정도의 COD 제거율이 상승하였다. 복합 응집제의 특성을 확인하기 위하여 zeta potential을 확인하였다. 복합 응집제 희석용액에 NaOH와 H2SO4를 이용하여 pH를 조절하였다. pH는 1∼13까지 조절하였으며 결과를 도 4에 도시하였다. 등전점은 pH 8∼9였고, pH가 알칼리성으로 갈수록 안정되었다. FeCl2는 pH 8부터 응집하기 시작했고, MgCl2는 pH 9.5부터 응집이 시작되므로 pH 9∼12의 영역에서 이 복합 응집제를 이용하면 응집효과를 볼 수 있다는 것으로 확인되었다.FIG. 3 shows the result of preparing a composite coagulant having FeCl 2 / MgCl 2 = 1 and FeCl 2 / MgCl 2 = 1/5 and changing the concentration to wastewater having a pH of 11. FeCl 2 / MgCl 2 = 1 A composite coagulant is a COD removal of about 30 to 40% was increased compared to FeCl 2 / MgCl 2 = 1/ 5 coagulant. The zeta potential was confirmed to confirm the characteristics of the composite flocculant. The pH of the mixed coagulant diluent was adjusted with NaOH and H 2 SO 4 . The pH was adjusted from 1 to 13, and the results are shown in FIG. The isoelectric point was
안정 상태에 있는 pH 2에서 입자의 분포를 nano-size meter를 이용하여 측정해 보았다. 입자 평균 45㎜이었고, 이 입자 분포를 도 5에 도시하였다.The distribution of particles at
COD 제거효율이 가장 좋은 pH 11에서의 입자의 분포는 도 6에 도시하였다. 이 분포는 OH-에 의해 Fe와 Mg이 수산화물로 형성된 물질의 분포이다. 입자의 크기는 45㎜에서 2.5㎛ 크기로 증대되어 유기물과의 결합이 가능한 것으로 판단된다.The distribution of the particles at pH 11, which has the highest COD removal efficiency, is shown in Fig. The distribution of OH - is the distribution of the material is formed of a Fe and Mg hydroxide by. The size of the particles increased from 45 ㎜ to 2.5 ㎛ and could be bonded with organic matter.
[실시예 1][Example 1]
현장 적용은 A사의 기존 폐수처리 설비를 이용하여 복합 응집제를 적용시켰다.The application of the composite coagulant was applied using the existing wastewater treatment plant of A company.
반응기에서 가성소다를 이용하여 pH 10∼11까지 올리고 Fe/Mg 복합 응집제를 실험실 시행 확인 농도로 주입하여 30분간 반응시켰고, 고분자 응집보조제를 이용하여 침전시켰다.The pH of the reactor was adjusted to 10 ~ 11 using caustic soda, and Fe / Mg complex coagulant was injected into the laboratory for 30 min. The precipitate was precipitated with polymer coagulant.
그 결과 응집 및 침전상태도 뛰어났으며, 초기 폐수는 현탁한 상태였으나 처리결과 상등수는 투명하였고, 탁도의 변화를 확인한 결과 85 NTU에서 3 NTU로 청정상태를 유지하였다.As a result, the coagulation and sedimentation state was also excellent. The initial wastewater was suspended, but the treated water was clear and the turbidity was changed. As a result, it was kept clean from 85 NTU to 3 NTU.
COD분석 결과도 양호하게 나타났다.COD analysis results were also good.
여과한 후 상등액을 중화 반응은 실시하지 않고 일반 폐수에 주입하여 혼합, 희석한 후 폐수의 방출이 가능하였다.After filtration, the supernatant was injected into general wastewater without neutralization reaction, and it was possible to discharge wastewater after mixing and diluting.
[실시예 2][Example 2]
복합 응집제를 사용한 현장 실무 적용으로 B사의 유기물 함유 폐수의 성상은 pH=7, COD의 농도는 920ppm, 1,550ppm, 2,068ppm 이었고, 상온 조건하에서 NaOH를 주입하여 pH를 11.0으로 조정한 후, 복합 응집제를 500ppm에서 7,500ppm까지 일정간격 농도로 주입하였으며, 초기에는 clarifier agitator를 5분간은 250rpm으로 작동시켰으며, 후반에는 40rpm으로 20분간 반응시켰다.The pH of the wastewater containing organic matter was determined to be pH = 7, COD concentration was 920ppm, 1,550ppm, and 2,068ppm. The pH of the wastewater was adjusted to 11.0 by the addition of NaOH at room temperature, At 500ppm to 7,500ppm. At first, the clarifier agitator was operated at 250rpm for 5 minutes and at 40rpm for 20 minutes.
고분자응집제를 주입하여 응집 및 침전시켰다.Polymer flocculant was injected to coagulate and precipitate.
침전 슬러지를 여과한 후, 여과액 중의 COD를 분석하였다.After the precipitated sludge was filtered, the COD in the filtrate was analyzed.
도 7은 복합 응집제의 첨가에 따른 COD 제거율을 도시한 것이다.Figure 7 shows the COD removal rate with addition of the composite flocculant.
본 발명 결과는 유기물을 함유한 폐수의 초기 COD 농도 920ppm에서 복합 응집제를 2,000ppm을 주입할 경우 COD 제거율은 약 80% 이상으로 나타났다.As a result of the present invention, COD removal rate was about 80% or more when 2,000 ppm of the coagulant was injected at an initial COD concentration of 920 ppm of wastewater containing organic matter.
Claims (3)
가성소다와 황산으로 구성되는 pH 조절제를 첨가하여 소정의 pH로 조절하는 단계(S 20);
고분자 응집제로 구성된 응집보조제를 주입하는 단계(S 30);
응집 및 침전단계(S 40);
상등액을 활성탄에 통과시키는 단계(S 50)로 이루어지고,
상기 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물을 처리 대상 유기물 함유 폐수의 총중량에 대하여 0.01∼3중량%, pH는 9∼12로 처리함을 특징으로 하는 난분해성 유기물을 함유한 산업폐수처리용 무기질 복합 응집제 조성물을 이용한 산업폐수 처리방법.Any one substance selected from the group consisting of ferrous chloride, ferric chloride, magnesium chloride, calcium chloride, cobalt chloride, nickel chloride and mixtures thereof is selected as the organic substance-containing wastewater to be treated and 1 to 5 parts by weight (S 10) injecting and reacting an inorganic composite flocculant composition for treating industrial wastewater containing an acid-resistant organic compound, wherein the weight ratio of the ferrous chloride and magnesium chloride is 1: 1 to 1: 2;
Adding a pH adjusting agent composed of caustic soda and sulfuric acid to a predetermined pH (S 20);
(S30) injecting a flocculant aid composed of a polymer flocculant;
Aggregation and precipitation step (S40);
Passing the supernatant through activated carbon (S50)
Characterized in that the inorganic composite coagulant composition for treating industrial wastewater containing the poorly decomposable organic matter is treated with 0.01 to 3% by weight and the pH is 9 to 12 based on the total weight of the organic matter-containing wastewater to be treated Industrial wastewater treatment method using inorganic composite flocculant composition for wastewater treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150085065A KR20150075406A (en) | 2015-06-16 | 2015-06-16 | Inorganic compound coagulant composition containing degradable organic matter for industrial wastewater treatment, and using industrial wastewater treatment methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150085065A KR20150075406A (en) | 2015-06-16 | 2015-06-16 | Inorganic compound coagulant composition containing degradable organic matter for industrial wastewater treatment, and using industrial wastewater treatment methods |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR20130028558A Division KR20140114138A (en) | 2013-03-18 | 2013-03-18 | Inorganic compound coagulant composition containing degradable organic matter for industrial wastewater treatment, and using industrial wastewater treatment methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20150075406A true KR20150075406A (en) | 2015-07-03 |
Family
ID=53788407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150085065A KR20150075406A (en) | 2015-06-16 | 2015-06-16 | Inorganic compound coagulant composition containing degradable organic matter for industrial wastewater treatment, and using industrial wastewater treatment methods |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20150075406A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116462378A (en) * | 2023-06-14 | 2023-07-21 | 河北旺效环保工程有限公司 | Combined treatment method for antibiotic production wastewater |
-
2015
- 2015-06-16 KR KR1020150085065A patent/KR20150075406A/en active Search and Examination
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116462378A (en) * | 2023-06-14 | 2023-07-21 | 河北旺效环保工程有限公司 | Combined treatment method for antibiotic production wastewater |
| CN116462378B (en) * | 2023-06-14 | 2023-09-01 | 河北旺效环保工程有限公司 | Combined treatment method for antibiotic production wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Jiang | The role of coagulation in water treatment | |
| CN102001734B (en) | Heavy metal settling agent for treating mercury-containing wastewater | |
| JP6486877B2 (en) | Waste water treatment device and waste water treatment method using the waste water treatment device | |
| Zonoozi et al. | Coagulation/flocculation of dye-containing solutions using polyaluminium chloride and alum | |
| CN108975420A (en) | COD (COD) removes mixture of powders | |
| Wang et al. | The disinfection by-products precursors removal efficiency and the subsequent effects on chlorine decay for humic acid synthetic water treated by coagulation process and coagulation–ultrafiltration process | |
| JP2007209886A (en) | Fluorine removing agent, and method and apparatus for treating drain containing fluorine using the agent | |
| RU2480423C1 (en) | Combined method of treating waste water containing organic contaminants | |
| Li et al. | Removal of F− and organic matter from coking wastewater by coupling dosing FeCl3 and AlCl3 | |
| Saxena et al. | Pilot-scale coagulation of organic and inorganic impurities: mechanisms, role of particle concentration and scale effects | |
| Edwards et al. | Effect of pre-ozonation on removal of organic matter during water treatment plant operations | |
| KR101844024B1 (en) | Wastewater treatment method and composition for removing soluble COD | |
| JP2009072769A (en) | Sewage treatment system | |
| KR20150106073A (en) | Compostion and method for treating waste water | |
| Ahmad et al. | Comparison of coagulation, electrocoagulation and biological techniques for the municipal wastewater treatment | |
| KR20140114138A (en) | Inorganic compound coagulant composition containing degradable organic matter for industrial wastewater treatment, and using industrial wastewater treatment methods | |
| KR20150075406A (en) | Inorganic compound coagulant composition containing degradable organic matter for industrial wastewater treatment, and using industrial wastewater treatment methods | |
| KR101088148B1 (en) | Electrical neutralization of colloidal particles with speed control how water | |
| CN109052717A (en) | A kind of deep treatment method of paper-making effluent | |
| CN105293659A (en) | Stabilization method for emergently treating sediment of heavy metal pollutants in water body | |
| WO2004046046A1 (en) | Agents for purifying waste water and muddy water | |
| CN108585156A (en) | A kind of flocculant and preparation method thereof removing COD in coal gasification phenol wastewater | |
| JP5306977B2 (en) | Method for treating boron-containing water and boron removing agent | |
| JPH02500724A (en) | Sewage sewage and other sewage treatment methods | |
| Krupińska | Impact of polyelectrolytes on the effectiveness of treatment of groundwater with increased natural organic matter content |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A107 | Divisional application of patent | ||
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| AMND | Amendment | ||
| E601 | Decision to refuse application | ||
| AMND | Amendment |