KR100308753B1 - Method of removing contaminant in waste water - Google Patents
Method of removing contaminant in waste water Download PDFInfo
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- KR100308753B1 KR100308753B1 KR1019990016928A KR19990016928A KR100308753B1 KR 100308753 B1 KR100308753 B1 KR 100308753B1 KR 1019990016928 A KR1019990016928 A KR 1019990016928A KR 19990016928 A KR19990016928 A KR 19990016928A KR 100308753 B1 KR100308753 B1 KR 100308753B1
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- South Korea
- Prior art keywords
- wastewater
- acid
- flocculant
- waste
- coagulant
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- 239000002351 wastewater Substances 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000000356 contaminant Substances 0.000 title 1
- 239000002253 acid Substances 0.000 claims abstract description 53
- 239000002699 waste material Substances 0.000 claims abstract description 36
- 239000000701 coagulant Substances 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000005189 flocculation Methods 0.000 claims abstract description 17
- 230000016615 flocculation Effects 0.000 claims abstract description 16
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 16
- 239000000654 additive Substances 0.000 claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 11
- 238000005054 agglomeration Methods 0.000 claims abstract description 5
- 230000002776 aggregation Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 230000003311 flocculating effect Effects 0.000 claims 1
- 235000003891 ferrous sulphate Nutrition 0.000 abstract description 9
- 239000011790 ferrous sulphate Substances 0.000 abstract description 9
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract description 9
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 229940079593 drug Drugs 0.000 abstract description 2
- 239000003814 drug Substances 0.000 abstract description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 230000015271 coagulation Effects 0.000 description 39
- 238000005345 coagulation Methods 0.000 description 39
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000003513 alkali Substances 0.000 description 7
- 238000009388 chemical precipitation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 229960002089 ferrous chloride Drugs 0.000 description 7
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229960004887 ferric hydroxide Drugs 0.000 description 2
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229940032296 ferric chloride Drugs 0.000 description 1
- 229940032950 ferric sulfate Drugs 0.000 description 1
- 229960001781 ferrous sulfate Drugs 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hcl hcl Chemical compound Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 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 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000004148 unit process 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
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 폐수의 응집처리방법에 관한 발명으로서 산폐수와 폐철재를 이용하여 응집제를 생산하는 공정을 폐수처리장 내에 설치함을 그 특징으로 하여 산폐수를 공급하여 산폐수저장조에 저장하는 단계, 산폐수저장조에서 산페수공급펌프에 의해 응집제제조탑으로 산폐수를 투입하는 단계, 상기 응집제제조탑의 내부에 충전된 페철재 및 첨가제와 유입된 산폐수를 화학반응시켜 응집제(황산제1철, 염화제1철)를 생산하는 단계, 상기 응집제제조탑에서 생성된 응집제를 폐수응집처리조로 투입하는 단계로 이루어지며, 폐수처리비용절감의 효과와 약품구매비용절감의 효과가 있다.The present invention relates to a method of flocculation treatment of wastewater, characterized in that a process for producing flocculant using acid wastewater and waste iron is installed in a wastewater treatment plant. In the wastewater storage tank, the acid wastewater is introduced into the coagulant manufacturing tower by an acid pumping water supply pump, and the coagulant (ferrous sulfate, chloride) is formed by chemical reaction between the ferrous materials and additives charged in the coagulant manufacturing tower and the introduced acid wastewater. Ferrous) production step, and the step of injecting the flocculant produced in the flocculant manufacturing tower into the waste water agglomeration treatment tank, there is an effect of reducing the waste water treatment cost and drug purchase cost.
Description
본 발명은 산폐수(수질환경보전법에 의한 산폐수) 또는 폐산(폐기물 관리법에 의한 폐산, 이하 상기 산폐수와 폐산을 산폐수라 통칭함)과 폐철재(주로 폐철을 이용하며 일반 철재도 사용하며 이하 '폐철재'라 칭함)를 이용하여 폐수처리 응집제(염화제1철(FeCl2) 또는 황산제1철(FeSO4) 등 기타 철응집제로서 이하 '응집제'라 칭함)를 제조하고 이에 의해 생산된 폐수처리 응집제를 생산라인에서 바로 폐수처리장의 폐수응집처리조로 공급하는 폐수의 응집처리장치에 관한 것이다.The present invention is a wastewater (acid wastewater in accordance with the Water Quality Environmental Conservation Act) or waste acid (waste acid in the Waste Management Act, hereinafter referred to as acid wastewater and waste acid as acid wastewater) and waste iron (mainly using waste iron and also using general steel The wastewater treatment flocculant (hereinafter referred to as 'coagulant') is produced by using the 'waste iron', and is produced by the other coagulant such as ferrous chloride (FeCl 2 ) or ferrous sulfate (FeSO 4 ). The present invention relates to a wastewater flocculation apparatus for supplying wastewater treatment flocculant directly from a production line to a wastewater flocculation tank of a wastewater treatment plant.
폐수를 처리하는 공정으로는 화학적 공정과 생물학적 공정 및 물리화학적 처리시설등이 있는데 그중 본 발명이 관련되는 분야는 화학적 단위공정중의 화학적 침전 분야이다. 화학적 침전은 용존 및 부유물질의 물리, 화학적 상태를 변환시켜 침전에 의해 제거될 수 있도록 화학약품을 첨가하는 것을 말한다. 화학적 침전 공정에 사용되는 약품에는 명반, 염화제1철, 염화제2철, 황산제1철, 황산제2철 등이 있다. 화학적 침전공정에 의해 부유상태나 콜로이드 상태의 유기화합물질과 영양염류(인, 질소)를 제거할 수 있다.Wastewater treatment processes include chemical processes, biological processes, and physicochemical treatment facilities, among which the field of the present invention is related to chemical precipitation in chemical unit processes. Chemical precipitation refers to the addition of chemicals that can be removed by precipitation by transforming the physical and chemical states of dissolved and suspended matter. Chemicals used in the chemical precipitation process include alum, ferrous chloride, ferric chloride, ferrous sulfate, ferric sulfate. The chemical precipitation process can remove suspended solids and colloidal organic compounds and nutrients (phosphorus, nitrogen).
대표적으로 황산제1철에 의한 침전반응을 살펴 보도록 하자.Let's look at the precipitation reaction by ferrous sulfate as a representative.
화학식 1-3과 같은 3단계의 반응을 거쳐 수산화제2철(Fe(OH)3)이 생성되는데 불용성의 수산화제2철은 젤라틴모양의 덩어리로서 다른 부유물질들과 응집되면서 함께 침전하여 화학적 침전반응을 일으키게 된다.Ferric hydroxide (Fe (OH) 3 ) is produced through a three-step reaction as shown in Chemical Formula 1-3. Insoluble ferric hydroxide is a gelatinous mass that precipitates together with other suspended solids and precipitates with chemical precipitation. Will cause a reaction.
이하 본 발명에서는 화학적 침전공정을 응집공정, 화학적 침전에 사용되는 화학약품을 응집제로 표현한다.Hereinafter, in the present invention, the chemical precipitation process is referred to as a flocculating agent, a chemical used in the flocculation process, chemical precipitation.
산업의 발달과 함께 대량 생산, 대량 소비화에 따른 폐수의 발생이 환경오염문제로 대두화 되어 있는 현실이다. 이에 폐기물의 발생을 최소화하기 위한 공정 및 발생된 폐기물을 재이용하는 공정이 많이 연구, 개발되고 있다. 이의 일환으로 산업공정에서 발생하는 폐철재류와 폐산을 이용하여 응집제 등의 화학약품을 생산하는 공정은 이미 국내에 개발되어 있지만, 폐수처리장에서의 직접적용은 아직 이루어지지 않고 있다.With the development of the industry, the generation of wastewater due to mass production and mass consumption has become an environmental pollution problem. Therefore, many processes for minimizing the generation of waste and a process for reusing the generated waste have been researched and developed. As a part of this, the process of producing chemicals such as flocculant using waste irons and waste acid generated in industrial processes has already been developed in Korea, but it has not been directly applied in wastewater treatment plants.
이에 본 발명은 폐수 및 폐기물을 이용하여 응집제를 생산하는 공정을 폐수처리장 내에 설치하여 산폐수와 폐철재를 이용하여 생산되는 폐수처리응집제를 생산라인에서 바로 응집제로 적용하는데 그 목적이 있다.Therefore, the present invention is to install a process for producing flocculant using wastewater and waste in the wastewater treatment plant to apply the wastewater treatment coagulant produced using acid wastewater and waste iron as a coagulant directly in the production line.
본 발명은 산폐수를 공급하여 산폐수저장조에 저장하는 단계, 상기 산폐수저장조에서 산폐수공급펌프에 의해 응집제제조탑으로 산폐수를 투입하는 단계, 상기 응집제제조탑의 내부에 충전된 폐철재 및 첨가제와 유입된 산폐수를 화학반응시켜 응집제를 생산하는 단계, 상기 응집제 제조탑에서 생성된 응집제를 폐수응집처리조로 투입시켜 폐수를 응집처리하는 단계로 이루어지는 응집처리방법이며 응집제 제조탑에 충전된 첨가제로 백금, 흑연, 폐알루미늄, 니켈, 납으로 이루어진 그룹중에서 1이상의 물질을 사용함을 특징으로 한다. 산폐수의 응집처리시에는 알칼리제와 산폐수가, 알칼리폐수의 응집처리시에는 알칼리폐수가, 중성폐수의 응집처리시에는 알칼리제와 중성폐수가 폐수응집처리조에 투입됨이 각각의 경우의 특징이다.The present invention comprises the steps of supplying acid wastewater and storing it in a wastewater storage tank, injecting the wastewater into the flocculant manufacturing tower by the wastewater supply pump in the wastewater storage tank, the waste steel filled in the interior of the flocculant manufacturing tower and A coagulation treatment method comprising the steps of producing a coagulant by chemically reacting the additive and the introduced wastewater, and coagulating the waste water by injecting the coagulant produced in the coagulant manufacturing tower into the waste water agglomeration treatment tank and additives packed in the coagulant manufacturing tower It is characterized by using at least one material from the group consisting of platinum, graphite, waste aluminum, nickel and lead. Alkali and acid wastewater in the coagulation treatment of acidic wastewater, alkali wastewater in the coagulation treatment of alkaline wastewater, and alkaline agent and neutral wastewater are introduced into the wastewater agglomeration treatment tank in the coagulation treatment of neutral wastewater.
종래에는 별도의 제조회사에서 생산, 건조하여 분말상태로 판매하는 응집제를 구매하여 물에 용해하여 사용하였다. 따라서 현장에 직접 설치할 경우 건조, 포장, 용해과정이 생략되어 경제성을 높일 수 있다. 또 산폐수와 폐철재를 사용하여 응집제를 생산하므로서 환경오염의 방지와 폐수처리비용 절감의 효과를 가져올수 있다.Conventionally, a flocculant produced by a separate manufacturer, dried, and sold in powder form was purchased and dissolved in water. Therefore, if directly installed on site, drying, packaging, melting process can be omitted, thereby improving economic efficiency. In addition, the production of flocculant using acid wastewater and waste steel can bring about environmental pollution prevention and wastewater treatment cost reduction.
도 1및 도 2는 산폐수의 응집처리시 응집처리방법을 구현한 응집처리장치의 구성도, 도 3은 산폐수 및 알칼리폐수의 응집처리시 응집처리방법을 구현한 응집처리장치의 구성도, 도 4는 산폐수 및 중성폐수의 응집처리시 응집처리방법을 구현한 응집처리장치의 구성도이다.1 and 2 is a block diagram of a coagulation treatment apparatus implementing the coagulation treatment method in the coagulation treatment of acid wastewater, Figure 3 is a block diagram of a coagulation treatment apparatus implementing a coagulation treatment method in coagulation treatment of acid wastewater and alkaline wastewater, 4 is a block diagram of a coagulation treatment apparatus implementing the coagulation treatment method for coagulation treatment of acid wastewater and neutral wastewater.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
100 : 산폐수 저장조100: acid wastewater storage tank
200 : 산폐수 공급펌프200: acid wastewater supply pump
300 : 응집제 제조탑300: flocculant manufacturing tower
400 : 폐수응집처리조400: wastewater condensation treatment tank
420 : 알칼리제 투입장치420: Alkaline input device
상술한 바와 같은 본 발명을 상세하게 설명하면 산업활동에서 발생되는 폐염산(HCl)이나 폐황산(H2SO4)등의 산폐수 또는 폐산을 산폐수저장조에 저장하였다가 산폐수공급펌프를 가동시켜 첨가제(폐알루미늄, 흑연, 백금, 니켈, 납)와 폐철재를 충전시킨 응집제제조탑으로 산폐수가 투입되면, 산폐수(HCl 또는 H2SO4)와폐철재(Fe)가 아래와 같은 화학반응식에 의해 화학반응하여 응집제인 염화제1철(FeCl2) 또는 황산제1철(FeSO4) 등을 생성한다.When the present invention is described in detail, the wastewater or waste acid, such as waste hydrochloric acid (HCl) or waste sulfuric acid (H 2 SO 4 ) generated in industrial activities, is stored in an acid wastewater storage tank and the acid wastewater supply pump is operated. If acid wastewater is added to the coagulant manufacturing tower filled with additives (waste aluminum, graphite, platinum, nickel, lead) and waste iron, the wastewater (HCl or H 2 SO 4 ) and waste iron (Fe) are Chemical reaction to produce ferrous chloride (FeCl 2 ), ferrous sulfate (FeSO 4 ), or the like as a flocculant.
2HCl + Fe(SOLID) ----------→ FeCl2(SOLUTION) + H2 2HCl + Fe (SOLID) ---------- → FeCl 2 (SOLUTION) + H 2
H2SO4+ Fe(SOLID) ---------→ FeSO4(SOLUTION) + H2 H 2 SO 4 + Fe (SOLID) --------- → FeSO 4 (SOLUTION) + H 2
이렇게 생성된 응집제는 곧바로 폐수처리시설의 응집처리조로 투입되어 교반기로 폐수와 응집제 및 알칼리제를 혼합반응시켜 응집처리한다. 이때 응집처리조에 투입되는 폐수 뿐만이 아니라 응집제제조탑으로 투입되어 화학반응에 의해 응집제를 생산하는 역할을 하였던 산폐수 역시 응집처리된다는 점을 주의하여야 한다. 상기 응집제제조탑에는 폐철재와 함께 촉매의 역할을 하는 첨가제가 포함되어 있어 응집제 생성반응을 촉진시킨다.The coagulant thus produced is immediately introduced into a coagulation treatment tank of a wastewater treatment facility and coagulated by mixing and reacting the wastewater, the coagulant and the alkali agent with a stirrer. At this time, it should be noted that not only the wastewater input to the flocculation tank but also the acid wastewater, which was introduced into the flocculant manufacturing tower and used to produce flocculant by chemical reaction, is also flocculated. The flocculant manufacturing tower includes additives that act as catalysts together with the waste iron to promote the flocculant formation reaction.
이러한 구성으로 이루어진 본 발명의 응집제 제조장치는 산폐수 및 폐산과 폐철재를 재이용하여 촉매하에서 응집제를 생산하는 장치를 폐수처리장 내에 설치하여 폐기물의 재이용 및 폐수처리 응집제의 효과적인 공급을 꾀하고 있다.The coagulant manufacturing apparatus of the present invention having such a configuration is intended to efficiently supply waste and wastewater treatment flocculant by installing a device for producing coagulant under a catalyst by reusing acid wastewater and waste acid and waste iron.
이하 본 발명의 구성을 설명한 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the drawings illustrating the configuration of the present invention will be described in detail.
도 1은 산폐수 응집처리시 응집처리방법을 구현한 응집처리장치의 구성도로서,1 is a block diagram of a coagulation treatment apparatus that implements a coagulation treatment method for acid wastewater coagulation treatment,
산폐수를 공급받아 산폐수저장조(100)에 저장하였다가 산폐수공급펌프(200)를 가동시켜 폐철재와 첨가제가 충전된 충전층(310)을 가진 응집제제조탑(300)으로 산폐수를 투입한다. 산폐수가 투입되면 응집제제조탑(300)에서는 첨가제가 촉매의 역할을 하여 산폐수와 폐철이 화학반응하여 응집제인 염화제1철, 황산제1철 등 기타 응집제를 생산한다. 생산된 응집제는 응집처리조(400)로 투입되며 응집처리조(400) 내에서는 알칼리제투입장치(420)로부터 투입된 알칼리제와 함께 응집처리조(400) 내에 설치된 교반기(410)의 교반에 의해 화학적 응집처리가 이루어 진다. 생성된 응집제의 양이 응집제제조탑에 투입되는 산폐수의 응집처리를 할 정도의 양인 경우 이러한 구성을 가지게 된다.After receiving the wastewater and storing it in the wastewater storage tank 100, the wastewater supply pump 200 was operated to input the wastewater into the coagulation manufacturing tower 300 having the packed bed 310 filled with the waste steel and the additives. do. When acid wastewater is input, the additives act as a catalyst in the coagulant manufacturing tower 300 to produce other coagulants such as ferrous chloride, ferrous sulfate, and the like as the coagulant reacts with the acid wastewater. The produced flocculant is introduced into the flocculation tank 400 and chemical flocculation is carried out by stirring the stirrer 410 installed in the flocculation tank 400 together with the alkali agent injected from the alkali dosing device 420 in the flocculation tank 400. Processing is done. If the amount of coagulant produced is such that the amount of coagulation treatment of the acid wastewater introduced into the coagulant manufacturing tower has this configuration.
도 2는 산폐수 응집처리시 응집처리방법을 구현한 응집처리장치의 구성도로서,2 is a block diagram of a coagulation treatment apparatus that implements a coagulation treatment method for acid wastewater coagulation treatment,
산폐수를 공급받아 산폐수저장조(100)에 저장하였다가 산폐수공급펌프(200)를 가동시켜 폐철재와 첨가제가 충전된 충전층(310)을 가진 응집제제조탑(300)으로 산폐수를 투입한다. 산폐수가 투입되면 응집제제조탑(300)에서는 첨가제가 촉매의 역할을 하여 산폐수와 폐철이 화학반응하여 응집제인 염화제1철, 황산제1철 등 기타 응집제를 생산한다. 생산된 응집제는 직접 응집처리조(400)로 투입되며 응집처리조(400) 내에서는 알칼리제투입장치(420)로부터 알칼리제와 새로이 산폐수가 투입되어 응집처리조(400) 내에 설치된 교반기(410)의 교반에 의해 화학적 응집처리가 이루어 진다. 생성된 응집제의 양이 응집제제조탑으로 투입되는 산폐수의 응집처리를 할 정도의 양을 능가하는 경우 응집처리조에 산폐수를 더 투입하여 응집처리를 하도록 구성된 응집처리장치이다.After receiving the wastewater and storing it in the wastewater storage tank 100, the wastewater supply pump 200 was operated to input the wastewater into the coagulation manufacturing tower 300 having the packed bed 310 filled with the waste steel and the additives. do. When acid wastewater is input, the additives act as a catalyst in the coagulant manufacturing tower 300 to produce other coagulants such as ferrous chloride, ferrous sulfate, and the like as the coagulant reacts with the acid wastewater. The produced flocculant is directly introduced into the coagulation treatment tank 400, and the alkaline agent and the acid wastewater are newly introduced from the alkali dosing device 420 in the coagulation treatment tank 400. Chemical agglomeration is achieved by stirring. When the amount of the generated flocculant exceeds the amount sufficient to cause the coagulation treatment of the acid wastewater introduced into the coagulation preparation tower, it is a coagulation treatment device configured to add coagulation treatment to the coagulation treatment tank.
도 3은 알칼리폐수 응집처리시 응집처리방법을 구현한 응집처리장치의 구성도로서,3 is a block diagram of a coagulation treatment apparatus implementing the coagulation treatment method in the alkaline wastewater flocculation treatment,
산폐수를 공급받아 산폐수저장조(100)에 저장하였다가 산폐수공급펌프(200)를 가동시켜 첨가제와 폐철재가 충전된 충전층(310)을 가진 응집제제조탑(300)으로 산폐수를 투입한다. 산폐수가 투입되면 응집제제조탑(300)에서는 촉매하에서 산폐수와 폐철이 화학반응하여 응집제인 염화제1철, 황산제1철 등 기타 응집제를 생산한다. 생산된 응집제는 직접 응집처리조(400)로 투입되며, 응집처리조(400)에서는 알칼리폐수가 투입되어 알칼리폐수 자체가 알칼리제 역할을 하여 응집조(400) 내에 설치된 교반기(410)의 교반에 의해 산폐수와 알칼리폐수의 화학적 응집처리가 이루어 진다.After receiving the wastewater and storing it in the wastewater storage tank 100, the wastewater supply pump 200 was operated to inject the wastewater into the coagulation manufacturing tower 300 having the packed bed 310 filled with additives and waste steel. do. When the acid wastewater is input, the coagulant manufacturing tower 300 chemically reacts the acid wastewater with the waste iron under a catalyst to produce other coagulants such as ferrous chloride and ferrous sulfate. The produced flocculant is directly added to the flocculation treatment tank 400, and the alkaline wastewater is introduced in the flocculation treatment tank 400, and the alkaline wastewater itself acts as an alkali agent by stirring the stirrer 410 installed in the flocculation tank 400. Chemical flocculation of acid and alkaline wastewater is carried out.
도 4는 중성폐수 응집처리시 응집처리방법을 구현한 응집처리장치의 구성도로서,4 is a block diagram of a coagulation treatment apparatus implementing the coagulation treatment method for neutral wastewater coagulation treatment,
산폐수를 공급받아 산폐수저장조(100)에 저장하였다가 산폐수공급펌프(200)를 가동시켜 첨가제와 폐철재가 충전된 충전층(310)을 가진 응집제제조탑(300)으로 산폐수를 투입한다. 산폐수가 투입되면 응집제제조탑(300)에서는 촉매하에서 산폐수와 폐철이 화학반응하여 응집제인 염화제1철, 황산제1철 등 기타 응집제를 생산한다. 생산된 응집제는 중성폐수가 투입된 응집처리조(400)로 직접 투입되어 알칼리제투입장치(420)로부터 투입되는 알칼리제와 함께 응집처리조(400) 내에 설치된 교반기(410)의 교반에 의해 산폐수와 중성폐수의 화학적 응집처리가 이루어 진다.After receiving the wastewater and storing it in the wastewater storage tank 100, the wastewater supply pump 200 was operated to inject the wastewater into the coagulation manufacturing tower 300 having the packed bed 310 filled with additives and waste steel. do. When the acid wastewater is input, the coagulant manufacturing tower 300 chemically reacts the acid wastewater with the waste iron under a catalyst to produce other coagulants such as ferrous chloride and ferrous sulfate. The produced flocculant is directly introduced into the coagulation treatment tank 400 into which the neutral waste water is introduced, and the acid wastewater and the neutral is stirred by the stirring of the stirrer 410 installed in the coagulation treatment tank 400 together with the alkaline agent injected from the alkaline injection device 420. Chemical flocculation of the wastewater takes place.
본 발명의 폐수응집처리방법은 폐기물의 이용 측면에서는 환경오염방지의 효과를 거둘 수 있으며, 산폐수를 이용하여 산폐수 자체가 응집제의 원료로 이용되므로 산구매비용절감 및 폐수처리비용절감의 일석이조의 효과가 있다. 또한 폐수처리장내에서 직접 응집제를 생산하여 공급하므로 건조, 포장, 운반, 용해 등의 과정이 생략되어 약품구매비용을 절감하는 한편 폐수처리 응집효율도 높이는 효과를 얻을 수 있다.Wastewater condensation treatment method of the present invention can achieve the effect of preventing environmental pollution in terms of the use of waste, and since acid wastewater itself is used as a raw material of flocculant using acid wastewater, it is possible to reduce acid purchase cost and wastewater treatment cost. It works. In addition, since the flocculant is produced and supplied directly in the wastewater treatment plant, the process of drying, packaging, transporting, dissolving, etc. is omitted, thereby reducing the cost of drug purchase and increasing the flocculation efficiency of the wastewater treatment.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6414116A (en) * | 1987-07-08 | 1989-01-18 | Kawasaki Steel Co | Production of ferric chloride for flocculant in waste water treatment |
| KR970006143A (en) * | 1995-07-06 | 1997-02-19 | 베르서 리베르크네흐트 | Method and apparatus for cross winding windings on yarn or band |
| KR0122328B1 (en) * | 1994-09-15 | 1997-11-12 | 김만제 | Method of iron dichloride liquid |
| JPH10128343A (en) * | 1996-10-30 | 1998-05-19 | Kurita Water Ind Ltd | Method for treating water containing selenium |
| JPH1147762A (en) * | 1997-07-30 | 1999-02-23 | Kurita Water Ind Ltd | Treatment of selenium compound-containing water |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6414116A (en) * | 1987-07-08 | 1989-01-18 | Kawasaki Steel Co | Production of ferric chloride for flocculant in waste water treatment |
| KR0122328B1 (en) * | 1994-09-15 | 1997-11-12 | 김만제 | Method of iron dichloride liquid |
| KR970006143A (en) * | 1995-07-06 | 1997-02-19 | 베르서 리베르크네흐트 | Method and apparatus for cross winding windings on yarn or band |
| JPH10128343A (en) * | 1996-10-30 | 1998-05-19 | Kurita Water Ind Ltd | Method for treating water containing selenium |
| JPH1147762A (en) * | 1997-07-30 | 1999-02-23 | Kurita Water Ind Ltd | Treatment of selenium compound-containing water |
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