KR19990045920A - Treatment of wastewater generated in the paper preparation process - Google Patents
Treatment of wastewater generated in the paper preparation process Download PDFInfo
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- KR19990045920A KR19990045920A KR1019990005207A KR19990005207A KR19990045920A KR 19990045920 A KR19990045920 A KR 19990045920A KR 1019990005207 A KR1019990005207 A KR 1019990005207A KR 19990005207 A KR19990005207 A KR 19990005207A KR 19990045920 A KR19990045920 A KR 19990045920A
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- Prior art keywords
- water
- inorganic coagulant
- salt system
- soluble
- added
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- 239000002351 wastewater Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title description 3
- 239000000701 coagulant Substances 0.000 claims abstract description 69
- 238000000034 method Methods 0.000 claims abstract description 40
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 150000002505 iron Chemical class 0.000 claims abstract description 30
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 10
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 14
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 10
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 6
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 5
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 4
- 239000011790 ferrous sulphate Substances 0.000 claims description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229960002089 ferrous chloride Drugs 0.000 claims description 2
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 claims description 2
- 239000012266 salt solution Substances 0.000 claims 2
- 239000000356 contaminant Substances 0.000 abstract description 12
- 238000003756 stirring Methods 0.000 abstract description 10
- 238000005189 flocculation Methods 0.000 description 10
- 230000016615 flocculation Effects 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000006228 supernatant Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920002401 polyacrylamide Polymers 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- 150000002500 ions Chemical group 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229920001661 Chitosan Polymers 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 229920000161 Locust bean gum Polymers 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- ORGVNUAEFXQRHA-UHFFFAOYSA-N O[Si](O)(O)O.O.Cl Chemical compound O[Si](O)(O)O.O.Cl ORGVNUAEFXQRHA-UHFFFAOYSA-N 0.000 description 1
- JOWAFYYERDHSJX-UHFFFAOYSA-N O[Si](O)(O)O.OS(O)(=O)=O Chemical compound O[Si](O)(O)O.OS(O)(=O)=O JOWAFYYERDHSJX-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000010420 locust bean gum Nutrition 0.000 description 1
- 239000000711 locust bean gum Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
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
- 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
-
- 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
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
본 발명은 제지공정에서 발생되는 폐수의 처리 방법에 관한 것으로, 수용성 철염 계통의 무기응집제를 1차 투입하여 교반하고 수용성 알루미늄염 계통의 무기응집제를 2차로 투입하고 교반하여 오염물질을 제거하거나 수용성 알루미늄염 계통의 무기응집제를 1차로 투입하여 교반하고 수용성 철염 계통의 무기응집제를 2차 투입하고 교반하여 오염물질을 제거하므로서 무기 응집제의 사용량을 최소화하면서도 폐수 처리 효율이 우수하므로서 경제적으로 용이하게 제지공정에서 발생되는 폐수를 처리할 수 있었다.The present invention relates to a method for treating wastewater generated in a papermaking process, by first adding and stirring an inorganic coagulant of a water-soluble iron salt system, and by adding a second inorganic coagulant of a water-soluble aluminum salt system and stirring to remove contaminants or water-soluble aluminum. The inorganic coagulant of the salt system is added first and stirred, and the inorganic coagulant of the water-soluble iron salt system is added and stirred to remove contaminants by minimizing the amount of inorganic coagulant and the wastewater treatment efficiency is excellent. The wastewater generated could be treated.
Description
본 발명은 제지공정에서 발생되는 폐수의 처리 방법에 관한 것으로, 좀 더 구체적으로는 수용성 철염 계통의 무기응집제를 1차 투입하여 교반하고 수용성 알루미늄염 계통의 무기응집제를 2차로 투입하고 교반하여 오염물질을 제거하거나 수용성 알루미늄염 계통의 무기응집제를 1차로 투입하여 교반하고 수용성 철염 계통의 무기응집제를 2차 투입하고 교반하여 오염물질을 제거하되 이들을 반응조 또는 반응조 이전의 공정에 투입함을 특징으로 하는 제지공정에서 발생되는 폐수의 처리 방법에 관한 것이다.The present invention relates to a method for treating wastewater generated in the papermaking process. More specifically, the inorganic coagulant of the water-soluble iron salt system is first added and stirred, and the inorganic coagulant of the water-soluble aluminum salt system is added and stirred. Or remove the contaminants by adding and stirring the inorganic coagulant of the water-soluble aluminum salt system as a primary, and adding the inorganic coagulant of the water-soluble iron salt system to the second stage and stirring them. It relates to a method for treating wastewater generated in the process.
제지공업은 다량의 공업용수 사용에 따른 폐수, 종이찌꺼기인 슬러지, 그리고 표백과정 중 배출되는 염소잔류물 등 다양한 오염물질을 발생시킴에 따라 환경오염 방지시설에 대한 연구 및 투자의 비용 부담이 많은 공해유발산업이며, 제지공정에서 발생되는 폐수의 처리방법으로 가장 광범위하게 사용되는 응집 침전법은 수용성 철염 계통의 무기응집제 및/또는 수용성 알루미늄염 계통의 무기응집제를 투입하여 오염물질을 제거하고 있다.The paper industry generates various contaminants such as wastewater from the use of large amounts of industrial water, sludge as paper waste, and chlorine residues emitted during the bleaching process. Coagulation sedimentation, which is the most widely used method of treating wastewater generated in the papermaking process, removes contaminants by adding inorganic coagulant of water-soluble iron salt system and / or inorganic coagulant of water-soluble aluminum salt system.
그러나, 수용성 철염 계통의 무기응집제 또는 수용성 알루미늄염 계통의 무기응집제만을 사용하였을 경우에는 폐수 처리 효율이 미약한 단점이 있었고, 목적하는 정도의 처리 효율을 얻기 위해서는 과량의 수용성 철염 계통의 무기응집제 또는 수용성 알루미늄염 계통의 무기응집제를 사용하여야 하며, 만족할 만한 폐수 처리 효과를 얻을 수 없었다.However, when only the inorganic coagulant of the water-soluble iron salt system or the inorganic coagulant of the water-soluble aluminum salt system was used, wastewater treatment efficiency was inferior. In order to obtain the desired treatment efficiency, the inorganic coagulant or the water-soluble coagulant of the excess water-soluble iron salt system was insufficient. Aluminum salt-based inorganic coagulant should be used, and satisfactory wastewater treatment effect could not be obtained.
따라서, 본 발명의 목적은 무기 응집제의 사용량을 최소화하면서도 폐수 처리 효율이 우수하므로서 경제적으로 용이하게 폐수를 처리할 수 있는 제지공정에서 발생되는 폐수의 처리 방법을 제공하는 데 있다.Accordingly, it is an object of the present invention to provide a method for treating wastewater generated in a papermaking process that can treat wastewater economically while minimizing the amount of inorganic flocculant while providing excellent wastewater treatment efficiency.
상기 목적 뿐만 아니라 용이하게 표출될 수 있는 또 다른 목적을 달성하기 위하여 본 발명에서는 수용성 철염 계통의 무기응집제를 1차 투입하여 교반하고 수용성 알루미늄염 계통의 무기응집제를 2차로 투입하고 교반하여 오염물질을 제거하거나 수용성 알루미늄염 계통의 무기응집제를 1차로 투입하여 교반하고 수용성 철염 계통의 무기응집제를 2차 투입하고 교반하여 오염물질을 제거하되 이들을 반응조 또는 반응조 이전의 공정에 투입하므로서 무기 응집제의 사용량을 최소화하면서도 폐수 처리 효율이 우수하므로서 경제적으로 용이하게 제지공정에서 발생되는 폐수를 처리할 수 있었다.In order to achieve the above object as well as another object that can be easily expressed in the present invention, the inorganic coagulant of the water-soluble iron salt system is first added and stirred, and the inorganic coagulant of the water-soluble aluminum salt system is added and stirred to contaminants. Minimize the amount of inorganic flocculant by removing or polluting by first adding inorganic coagulant of water-soluble aluminum salt system and adding inorganic coagulant of water-soluble iron salt system and stirring it to remove contaminants. At the same time, the wastewater treatment efficiency was easily and economically easily treated in the papermaking process.
본 발명을 좀 더 구체적으로 설명하면 다음과 같다.The present invention is described in more detail as follows.
본 발명에 따른 제지공정에서 발생되는 폐수의 처리 방법은 수용성 철염 계통의 무기응집제를 1차 투입하여 교반하고 수용성 알루미늄염 계통의 무기응집제를 2차로 투입하고 교반하여 오염물질을 제거하거나 수용성 알루미늄염 계통의 무기응집제를 1차로 투입하여 교반하고 수용성 철염 계통의 무기응집제를 2차 투입하고 교반하여 오염물질을 제거하되 이들을 반응조 또는 반응조 이전의 공정에 투입하는 것으로 특징지워진다.Waste water treatment method generated in the papermaking process according to the present invention is first added by stirring the inorganic coagulant of the water-soluble iron salt system, and the second is added to the inorganic coagulant of the water-soluble aluminum salt system and stirred to remove contaminants or water-soluble aluminum salt system The inorganic coagulant of the mixture is firstly added and stirred, and the inorganic coagulant of the water-soluble iron salt system is added secondly and stirred to remove contaminants, and these are introduced into a reactor or a process before the reactor.
즉, 본 발명의 발명자 등은 제지공정에서 발생되는 폐수를 응집침전법으로 처리함에 있어서, 폐수에 수용성 철염 계통의 무기응집제와 수용성 알루미늄염 계통의 무기응집제를 각각 또는 혼합하여 투입하고 폐수 처리 효율을 측정한 결과, 수용성 철염 계통의 무기응집제와 수용성 알루미늄염 계통의 무기응집제를 모두 투입하되 각각 분리하여 순차적으로 투입하므로서 즉, 수용성 철염 계통의 무기응집제와 수용성 알루미늄염 계통의 무기응집제 중 일종을 먼저 투입하고 교반하여 응집시키고 나머지 일종을 재차 투입하여 교반하므로서 수용성 철염 계통의 무기응집제와 수용성 알루미늄염 계통의 무기응집제를 각각 투입하거나 혼합 투입시 보다 적은 양의 무기응집제를 사용하면서도 폐수 처리 효율을 향상시킬 수 있었을 뿐만 아니라 양호한 탁도를 얻을 수 있었다.In other words, the inventors of the present invention, in the treatment of the wastewater generated in the papermaking process by the flocculation sedimentation method, the inorganic water flocculant of the water-soluble iron salt system and the inorganic flocculant of the water-soluble aluminum salt system are added or mixed to the waste water to improve the wastewater treatment efficiency. As a result of the measurement, both the inorganic coagulant of the water-soluble iron salt system and the inorganic coagulant of the water-soluble aluminum salt system are added to each other separately and sequentially. That is, the inorganic coagulant of the water-soluble iron salt system and the inorganic coagulant of the water-soluble aluminum salt system are added first. And aggregate by stirring and stirring the remaining ones again, and the inorganic coagulant of the water-soluble iron salt system and the inorganic coagulant of the water-soluble aluminum salt system may be added to each other or mixed waste may be used to improve the efficiency of wastewater treatment. Not only was there a good tuck The could get.
특히, 수용성 철염 계통의 무기응집제를 1차 투입하여 교반하고 수용성 알루미늄염 계통의 무기응집제를 2차로 투입하고 교반하여 오염물질을 제거하는 방법을 사용하게 되면, 1차적으로 투입된 수용성 철염 계통의 무기응집제에서 Fe+2또는 Fe+3, SO4 --, Cl-가 용존되고 이로 인하여 폐수속에 포함되어 있는 여러 가지의 무기 및 유기 COD원이 효과적으로 제거되며, 2차적으로 투입된 수용성 알루미늄염 계통의 무기응집제에 의하여 부유물이 응집 제거되므로 효과적이었다.In particular, when the inorganic coagulant of the water-soluble iron salt system is first added and stirred, the inorganic coagulant of the water-soluble aluminum salt system is added to the secondary and stirred to remove contaminants. in the Fe +2 or Fe +3, SO 4 -, Cl - is dissolved and this reason a number of the arms and this will effectively remove organic COD source, a water-soluble aluminum salt system of the inorganic coagulant injected secondarily contained in the waste water It was effective because the suspended solids are removed by flocculation.
본 발명에서 사용되는 수용성 철염 계통의 무기응집제로는 폴리황산철, 황산제1철, 황산제2철, 폴리염화철, 염화제1철, 염화제2철 등이 있으며, 각각 단독으로 사용되거나 2종 이상을 혼합하여 사용할 수도 있고, 수용성 알루미늄염 계통의 무기응집제로는 황산알루미늄, 염화알루미늄, 폴리황산알루미늄, 폴리염화알루미늄, 폴리황산규산알루미늄, 폴리수산화염화규산알루미늄 등이 있으며, 각각 단독으로 사용되거나 2종 이상을 혼합하여 사용할 수도 있다. 혼합하여 사용할 경우에는 폐수의 특성에 따라 반복실험을 통하여 적절히 선정하고, 혼합비율을 결정할 수 있다.The inorganic coagulant of the water-soluble iron salt system used in the present invention includes iron polysulfate, ferrous sulfate, ferric sulfate, polyiron chloride, ferrous chloride, ferric chloride, etc., each used alone or two kinds. The inorganic coagulants of the water-soluble aluminum salt system may be used as a mixture thereof. Examples of the inorganic coagulant include aluminum sulfate, aluminum chloride, aluminum polysulfate, polyaluminum chloride, polyaluminum silicate, and polyaluminum hydrochloride silicate. You may mix and use 2 or more types. In the case of mixing, it can be appropriately selected through repeated experiments according to the characteristics of the wastewater, and the mixing ratio can be determined.
또한, 알긴산나트륨, CMC-Na, 수용성아니린수지염산염, 폴리에틸렌이민, 폴리아민, 폴리디아릴디메틸 암모늄클로라이드, 키토산 헥사메틸렌디아민, 에피크롤히드린 중축합물, 전분, 구아검, 로커스트빈검, 제라틴, 폴리아크릴산나트륨, 아크릴아미드와 아크릴산나트륨 공중합물, 폴리아크릴아미드 부분가수분해물, 폴리비닐이미다졸린, 폴리알킬아미노아크릴레이트 또는 메타크릴레이트, 폴리아크릴아미드의 만니히변성물, 폴리아크릴아미드, 폴리에틸렌옥사이드 등과 같은 유기응집제에 상기한 무기응집제를 결합시킨 것도 사용 가능하다.Sodium alginate, CMC-Na, water-soluble aniline resin hydrochloride, polyethyleneimine, polyamine, polydiaryldimethyl ammonium chloride, chitosan hexamethylenediamine, epicrohydrin polycondensate, starch, guar gum, locust bean gum, gelatin, Sodium polyacrylate, acrylamide and sodium acrylate copolymer, polyacrylamide partial hydrolyzate, polyvinylimidazoline, polyalkylaminoacrylate or methacrylate, Mannich modification of polyacrylamide, polyacrylamide, polyethylene oxide It is also possible to combine the above-mentioned inorganic coagulant with an organic coagulant.
폴리황산철은 주성분이 Fe2O3인 것이고, 응집제로서의 황산제1철은 플록이 무거워서 침강속도가 빠르고 높은 pH영역(pH 8 ∼ 11)에서 응집처리가 되며 알칼리도가 높고 탁도만이 있는 물의 처리에 적당하다.Iron polysulfate is mainly composed of Fe 2 O 3 , ferrous sulfate as a coagulant is heavy floc, so it settles quickly and coagulates at high pH (pH 8-11), and has high alkalinity and turbidity. It is suitable to
황산제2철(Fe2(SO4)3)은 보통 물에 거의 용해되지 않으며 산성용액에서 용해되는 성질이 있고, 폴리염화철은 주성분이 Fe2O3이고, 염화제1철(FeCl2)은 황산제1철과 유사한 성질을 가지고 있으며, 염화제2철(FeCl2ㆍnH2O)은 응집제로서는 액체 염화제2철이 사용되며, 응집 적정범위가 pH 4.0 ∼ 11.0으로 매우 넓고 알칼리 영역에서도 플록이 용해되지 않으며 플록이 무거워 침강이 빠르고 탈색성을 가지고 있어 색도제거에 효과적이며 황화수소의 제거가 가능하고 유에멀젼의 파쇄에 유효하다.Ferric sulfate (Fe 2 (SO 4 ) 3 ) is usually hardly soluble in water and soluble in acidic solution, poly iron chloride is the main component of Fe 2 O 3 , ferric chloride (FeCl 2 ) It has properties similar to ferrous sulfate, and ferric chloride (FeCl 2 nH 2 O) is used as a coagulant, and liquid ferric chloride is used. The coagulation titration range is pH 4.0 to 11.0, which is very wide and flocs are present in the alkaline region. It does not dissolve, and the flocs are heavy, so it settles quickly and has decolorization, which is effective for removing color, removing hydrogen sulfide, and effective for crushing emulsion.
황산알루미늄(Al2(SO4)3ㆍnH2O)은 우수한 응집특성과 시장성이 좋아 오늘날까지 가장 광범위하게 대량으로 사용되어 온 응집제로서 염가이며, 거의 대부분의 현탁물, 부유물에 대하여 유효하고 독성이 없으므로 대량 투입이 가능하며, 결정은 부식성이나 자극성이 없어 취급이 용이하고 철염과 같이 시설물의 바닥이나 벽 등을 더럽히지 않는 장점이 있는 반면에 다른 응집제에 비하여 적정 응집폭이 좁고 일반적인 수처리에서는 알칼리조제, 응집촉진제의 첨가가 필요한 단점이 있다.Aluminum sulfate (Al 2 (SO 4 ) 3 ㆍ nH 2 O) is the most widely used flocculant to date because of its excellent flocculating properties and marketability. It is inexpensive and effective against most suspensions and suspended solids. It can be added in large quantities because it is not corrosive or irritating, so it is easy to handle and does not pollute the floor or walls of facilities such as iron salts. There is a disadvantage that the addition of the preparation, flocculation promoter.
염화알루미늄 역시 응집제로서 주로 사용되며, 폴리황산알루미늄은 중축합작용에 의하여 생성되는 염기성 다핵착이온 구조를 가지는 무기고분자화합물로 염기도 50% 정도의 용액이 가장 효과적이며, 플록의 응집성능, 제탁효과, 알칼리조제 및 응집촉진제의 절감효과, 적정투입율의 허용폭, 응집 pH범위 등의 특징은 폴리염화알루미늄과 거의 유사하다.Aluminum chloride is also mainly used as a flocculant, and polyaluminum sulfate is an inorganic polymer compound having a basic polynucleated ion structure produced by polycondensation, and a solution having a basicity of about 50% is most effective, and flocculation performance, flocculation effect, Reduction effect of alkali preparation and flocculation accelerator, tolerance range of proper dosage, coagulation pH range, etc. are similar to those of polyaluminum chloride.
폴리염화알루미늄은 다염기성 염화알루미늄으로 수용액에서는 아쿠오착이온〔Al(H2O)6〕3+를 가지는 배위화합물이므로 OH기를 가교로 하여 다핵착체가 되어 핵이 증가하여 거대화되어 형성된 무기고분자화합물이고, 폴리황산규산알루미늄 (polyalumium sulfate-silicate : PASS) 및 폴리수산화염화규산알루미늄 (polyalumium hydroxide-chloride-silicate : PAHCS) 역시 응집특성이 우수하여 광범위하게 사용되고 있다.Polyaluminum chloride is a polybasic aluminum chloride, which is a coordination compound with aqua complex ions [Al (H 2 O) 6 ] 3+ in aqueous solution. , Polyalumium sulfate-silicate (PASS) and polyalumium hydroxide-chloride-silicate (PAHCS) are also widely used because of their excellent cohesive properties.
수용성 철염 계통의 무기응집제와 수용성 알루미늄염 계통의 무기응집제의 투입량은 폐수의 특성에 따라 적절히 조절하여 선정할 수 있으며, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자이면 용이하게 유추하여 결정할 수 있다.The amount of the inorganic coagulant of the water-soluble iron salt system and the inorganic coagulant of the water-soluble aluminum salt system may be appropriately selected and adjusted according to the characteristics of the wastewater, and a person having ordinary knowledge in the technical field to which the present invention belongs can be easily inferred and determined. have.
그러나, 수용성 철염 계통의 무기응집제와 수용성 알루미늄염 계통의 무기응집제는 동일 비율로 투입하는 것이 가장 효과적이며, 무수염, 수화염 또는 수용액상의 수용성 철염 계통의 무기응집제와 수용성 알루미늄염 계통의 무기응집제를 모두 사용할 수 있다.However, it is most effective to add the inorganic coagulant of the water-soluble iron salt system and the inorganic coagulant of the water-soluble aluminum salt system in the same ratio, and the inorganic coagulant of the water-soluble iron salt system of the anhydrous salt, the hydrate salt or the aqueous solution and the inorganic coagulant of the water-soluble aluminum salt system are used. All can be used.
수용성 철염 계통의 무기응집제와 수용성 알루미늄염 계통의 무기응집제의 투입은 본 발명이 속하는 기술 분야에서 통상적으로 사용되는 방법으로 행하여 1차적으로 투입된 무기응집제가 작용하여 거의 응집이 완료되었다고 추정되는 시점에 다른 무기응집제를 투입하여 응집반응을 완료한다.Incorporation of the inorganic coagulant of the water-soluble iron salt system and the inorganic coagulant of the water-soluble aluminum salt system is carried out by a method commonly used in the technical field to which the present invention belongs. An inorganic coagulant is added to complete the flocculation reaction.
상술한 바와 같이 수용성 철염 계통의 무기응집제와 수용성 알루미늄염 계통의 무기응집제를 공지의 화학적처리방법에 의한 수처리 공정에 적용하되 이를 반응조 또는 반응조 이전의 공정에 투입하고 집수조에서의 반응을 30분 이상 동안 반응시켜 수처리를 행한다.As described above, the inorganic coagulant of the water-soluble iron salt system and the inorganic coagulant of the water-soluble aluminum salt system may be applied to a water treatment process by a known chemical treatment method, which is added to a reaction tank or a process before the reaction tank, and the reaction in the collection tank is performed for 30 minutes or more. The reaction is carried out for water treatment.
이렇게 하면 별도의 응집반응조가 필요없게 되어 비용이 절감될 뿐만 아니라 기존의 수처리라인을 그대로 이용할 수 있는 장점이 있으며, 부유물의 응집 및 중금속제거는 물론 저분자량화합물 및 비이온성화합물의 제거에도 우수한 효과를 나타내게 된다.This not only eliminates the need for a separate flocculation tank, but also reduces the cost. The existing water treatment line can be used as it is. The flocculation and removal of heavy metals as well as the removal of low molecular weight compounds and nonionic compounds are excellent. Will be displayed.
다음의 실시예 및 비교예는 본 발명을 좀 더 상세히 설명하는 것이지만, 본 발명의 범주를 한정하는 것은 아니다.The following examples and comparative examples illustrate the invention in more detail, but do not limit the scope of the invention.
실시예 1Example 1
국내의 D제지회사로 부터 폐수를 수거하여 COD가 400ppm이 되도록 조절한 후, 4 ∼ 6개의 비이커에 시료(pH = 7.92, 수온 = 20.1℃) 1ℓ를 넣고 교반기의 회전수를 300rpm으로 하면서 Fe 함량이 10.0%인 황산제2철(Fe2(SO4)3)을 표 1에 기재된 양으로 투입하여 10분간 교반한 다음, 교반기의 회전수를 50rpm으로 하면서 Al2O3함량이 8.0%인 황산알루미늄(Al2(SO4)3)을 표 1에 기재된 양으로 투입하여 교반하여 응집반응을 완료한 후, 정치시켜서 플록을 침전시킨 다음, 상층수를 취하여 COD를 측정하고 스펙트로포토메터를 이용하여 탁도를 측정하여 그 결과를 표 1에 기재하였다.After collecting wastewater from domestic D paper company, adjust COD to 400ppm, put 1L of sample (pH = 7.92, water temperature = 20.1 ℃) in 4-6 beakers, and set the Fe content while rotating the stirrer at 300rpm. This 10.0% ferric sulfate (Fe 2 (SO 4 ) 3 ) was added in the amount shown in Table 1 and stirred for 10 minutes. The sulfuric acid having an Al 2 O 3 content of 8.0% was set at a rotation speed of 50 rpm. Aluminum (Al 2 (SO 4 ) 3 ) was added in the amounts shown in Table 1 and stirred to complete the flocculation reaction. After standing, the floc was allowed to settle. Then, the supernatant was taken to measure COD, and the spectrophotometer was used. Turbidity was measured and the results are shown in Table 1.
실시예 2Example 2
황산알루미늄과 황산제2철의 투입 순서를 바꾼 것을 제외하고는 실시예 1과 동일한 방법으로 폐수를 처리하고 상층수를 취하여 COD를 측정하고 스펙트로포토메터를 이용하여 탁도를 측정하여 그 결과를 표 2에 기재하였다.Except for changing the order of addition of aluminum sulfate and ferric sulfate, the wastewater was treated in the same manner as in Example 1, the supernatant was taken to measure COD, and the turbidity was measured using a spectrophotometer. It is described in.
실시예 3Example 3
황산알루미늄과 황산제2철의 투입양을 변경한 것을 제외하고는 실시예 1과 동일한 방법으로 폐수를 처리하고 상층수를 취하여 COD를 측정하고 스펙트로포토메터를 이용하여 탁도를 측정하여 그 결과를 표 3에 기재하였다.Except for changing the amount of aluminum sulfate and ferric sulfate, the wastewater was treated in the same manner as in Example 1, the supernatant was taken to measure COD, and the turbidity was measured using a spectrophotometer. It described in 3.
실시예 4Example 4
황산알루미늄과 황산제2철의 투입양을 변경한 것을 제외하고는 실시예 2와 동일한 방법으로 폐수를 처리하고 상층수를 취하여 COD를 측정하고 스펙트로포토메터를 이용하여 탁도를 측정하여 그 결과를 표 4에 기재하였다.Except for changing the input amount of aluminum sulfate and ferric sulfate, the wastewater was treated in the same manner as in Example 2, the supernatant was taken to measure COD, and the turbidity was measured using a spectrophotometer. 4 is described.
비교예 1Comparative Example 1
황산제2철만을 투입한 것을 제외하고는 실시예 1와 동일한 방법으로 폐수를 처리하고 상층수를 취하여 COD를 측정하고 스펙트로포토메터를 이용하여 탁도를 측정하여 그 결과를 표 5에 기재하였다.Except that only ferric sulfate was added, the wastewater was treated in the same manner as in Example 1, the supernatant was taken to measure COD, and the turbidity was measured using a spectrophotometer.
비교예 2Comparative Example 2
황산알루미늄만을 투입한 것을 제외하고는 실시예 1와 동일한 방법으로 폐수를 처리하고 상층수를 취하여 COD를 측정하고 스펙트로포토메터를 이용하여 탁도를 측정하여 그 결과를 표 6에 기재하였다.Except that only aluminum sulfate was added, the wastewater was treated in the same manner as in Example 1, the supernatant was taken to measure COD, and the turbidity was measured using a spectrophotometer.
비교예 3Comparative Example 3
교반기의 회전수를 300rpm으로 하면서 황산제2철과 황산알루미늄을 동시에 투여한 것을 제외하고는 실시예 1과 동일한 방법으로 폐수를 처리하고 상층수를 취하여 COD를 측정하고 스펙트로포토메터를 이용하여 탁도를 측정하여 그 결과를 표 7에 기재하였다.The waste water was treated in the same manner as in Example 1, except that the stirrer was rotated at 300 rpm and the ferric sulfate and aluminum sulfate were simultaneously administered, and the supernatant was taken to measure COD. It measured and the result is shown in Table 7.
상술한 바와 같이 본 발명에서는 수용성 철염 계통의 무기응집제를 1차 투입하여 교반하고 수용성 알루미늄염 계통의 무기응집제를 2차로 투입하고 교반하여 오염물질을 제거하거나 수용성 알루미늄염 계통의 무기응집제를 1차로 투입하여 교반하고 수용성 철염 계통의 무기응집제를 2차 투입하고 교반하여 오염물질을 제거하되 이들을 반응조 또는 반응조 이전의 공정에 투입하므로서 무기 응집제의 사용량을 최소화하면서도 폐수 처리 효율이 우수하므로서 경제적으로 용이하게 제지공정에서 발생되는 폐수를 처리할 수 있었다.As described above, in the present invention, the inorganic coagulant of the water-soluble iron salt system is first added and stirred, and the inorganic coagulant of the water-soluble aluminum salt system is added to the secondary and stirred to remove contaminants or the inorganic coagulant of the water-soluble aluminum salt system is added to the primary. Stirring to remove the contaminants by adding the inorganic coagulant of water-soluble iron salt system and stirring it, but by putting them into the reaction tank or the process before the reaction tank to minimize the amount of inorganic flocculant and excellent wastewater treatment efficiency and economically easy papermaking process It was possible to treat wastewater from
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100435508B1 (en) * | 2001-11-28 | 2004-06-10 | 한솔제지주식회사 | H2S removal process from paper mill sludge |
| KR101032478B1 (en) * | 2008-08-14 | 2011-05-09 | 미주엔비켐 주식회사 | Water-treatment cohesive agents and Preparing method thereof |
| KR101842094B1 (en) * | 2017-12-22 | 2018-03-26 | 삼구화학공업 주식회사 | Cohesive agent and pH adjustment agent comprising sodium aluminum silicate for water-treatment |
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| KR20190082656A (en) | 2018-09-07 | 2019-07-10 | 삼구화학공업 주식회사 | Coagulant composition for sewage, waste water and sludge treatment |
| KR20190082682A (en) | 2019-04-03 | 2019-07-10 | 삼구화학공업 주식회사 | Coagulant composition for sewage, waste water and sludge treatment |
| KR20190113711A (en) | 2019-09-27 | 2019-10-08 | 삼구화학공업 주식회사 | Coagulant composition for sewage, waste water and sludge treatment |
| KR20200062094A (en) | 2020-05-18 | 2020-06-03 | 삼구화학공업 주식회사 | Coagulant composition for sewage, waste water and sludge treatment |
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| JP2549944B2 (en) * | 1990-11-30 | 1996-10-30 | 新王子製紙株式会社 | Method for removing all organohalogen compounds in wastewater from kraft pulping process |
| KR940001798A (en) * | 1992-07-10 | 1994-02-16 | 황홍철 | Vacuum drying device for steaming food such as fish meat |
| DE9412435U1 (en) * | 1994-08-02 | 1994-09-29 | Festo Kg | Working cylinder |
| KR0149124B1 (en) * | 1995-07-10 | 1998-10-15 | 권회섭 | Cohesive agent composition |
| KR100221977B1 (en) * | 1997-06-16 | 1999-09-15 | 김명호 | Method for producing cohesive of inorganic polymer |
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| KR100435508B1 (en) * | 2001-11-28 | 2004-06-10 | 한솔제지주식회사 | H2S removal process from paper mill sludge |
| KR101032478B1 (en) * | 2008-08-14 | 2011-05-09 | 미주엔비켐 주식회사 | Water-treatment cohesive agents and Preparing method thereof |
| KR101842094B1 (en) * | 2017-12-22 | 2018-03-26 | 삼구화학공업 주식회사 | Cohesive agent and pH adjustment agent comprising sodium aluminum silicate for water-treatment |
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