KR20030048735A - A disposal method of food garbage drainage - Google Patents

A disposal method of food garbage drainage Download PDF

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KR20030048735A
KR20030048735A KR1020010078737A KR20010078737A KR20030048735A KR 20030048735 A KR20030048735 A KR 20030048735A KR 1020010078737 A KR1020010078737 A KR 1020010078737A KR 20010078737 A KR20010078737 A KR 20010078737A KR 20030048735 A KR20030048735 A KR 20030048735A
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tank
water
treated water
pipe
floc
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나경욱
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나경욱
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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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • 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
    • C02F2103/06—Contaminated groundwater or leachate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/07—Alkalinity

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Physical Water Treatments (AREA)

Abstract

PURPOSE: A disposal method of food garbage drainage is provided to prevent the environmental contamination by treating the leachate as the second rate water standard, save the treatment period to 5 days and the treatment cost. CONSTITUTION: The disposal method of food garbage drainage comprises a process which makes floc with coagulant by controlling pH, a dehydration process which separates floc and wastewater, a process which removes dissolved solids from the water through electrolysis basin, a process which removes deposit from the water by gravity difference, a process which makes floc with alkalinity, a process which removes floating matter from water with fine bubble floating device, a process which removes foam from the water by spraying the water.

Description

음식물쓰레기 침출수의 처리방법{A disposal method of food garbage drainage}A disposal method of food garbage drainage

본 발명은 음식물쓰레기의 침출수를 처리하는 방법에 관한 것으로서,The present invention relates to a method for treating leachate of food waste,

자세하게는 BOD 150,000ppm이상의 고농도 오폐수인 음식물쓰레기의 침출수를Specifically, leachate from food waste, which is a high concentration of waste water of more than 150,000ppm BOD,

유입된 오폐수를 소석회(Ca(OH)2), 황산알미늄(Al2(SO4)3), 고분자응집제 등으로 pH를 조정하고 플록을 형성시키는 단계와 오폐수에서 플록을 제거하는 탈수 처리단계, 전기분해조에서 처리수중 용존유기물을 제거하는 단계, DAF부상조로 유입된 처리수에 미세기포부상장치에 의해 오페수중의 부유물질을 제거하는 단계, 소포수를 제거하는 단계 등으로 이루어진 음식물쓰레기의 침출수를 처리하는 방법이다.Adjusting the pH of the wastewater introduced into calcined lime (Ca (OH) 2), aluminum sulfate (Al2 (SO4) 3), polymer coagulant, etc., forming flocs, and dehydrating treatment step to remove flocs from the wastewater. Treating the leachate of food waste consisting of removing dissolved organic matter in the treated water, removing suspended solids in the effluent water by a microbubble flotation device, and removing the scavenger water. Way.

국내에서 음식물쓰레기를 재활용하는 사업이 정부 또는 지방자치단체 등에 의해서 활발히 수행되는데, 이러한 음식물쓰레기를 재활용하여 사료나 퇴비 등으로 활용하는 과정에서 침출수가 발생된다.In Korea, a project to recycle food waste is actively carried out by the government or local governments, and leachate is generated in the process of recycling such food waste and using it as feed or compost.

음식물쓰레기 침출수는 일반 오폐수와는 달리 BOD 150,000ppm이 넘고 침출수 성상 또한 일반 유기물, 세제, 식용유 등을 포함하고 있고 분석이 불가능할 정도의 고농도로서 분해가 잘 되지 않아 심각한 환경오염의 원인이 되고 있다.Food waste leachate, unlike general wastewater, exceeds BOD 150,000ppm, and leachate properties include general organic matter, detergents, cooking oil, etc., and are high in concentrations that cannot be analyzed and are not easily decomposed, causing serious environmental pollution.

그러나 현재 상기 음식물쓰레기의 침출수를 처리하는 방법이 없어 전량 해양투기에 의존하는데, 해양투기는 또 다른 환경오염을 유발하고 처리비용 또한 많이 드는 문제점이 있어 음식물쓰레기를 재활용하는데 큰 장애가 되고 있다.However, there is no method for treating the leachate of the food waste at present, so the total amount is dependent on ocean dumping, which causes another environmental pollution and a high cost of treatment, which is a major obstacle in recycling food waste.

본 발명은 이상과 같은 문제점을 해결하기 위한 것이다.The present invention is to solve the above problems.

해양투기를 방지하여 2차 환경오염을 방지하도록 음식물쓰레기 침출수를 물리·화학적방법과 생물학적 처리과정을 거쳐 일반 법적 방류수 기준에 적합하게 처리하는 것을 목적으로 하며,It aims to treat food waste leachate in accordance with general legal effluent standard through physical and chemical methods and biological treatment to prevent marine dumping and to prevent secondary environmental pollution.

이를 실현하기 위하여 오폐수를 처리하는 통상의 처리수단을 다음과 같은 단계로 구성함으로써 BOD기준 150,000ppm의 고농도 음식물쓰레기 침출수를 처리하는 방법을 제시하는 것으로서 자세하게는,In order to realize this, the conventional treatment means for treating wastewater is composed of the following steps, and in detail, as a method of treating 150,000 ppm of food waste leachate on a BOD basis, in detail,

오폐수중 현탁물질의 응집을 위한 알칼리도와 pH를 조정하여 응집제로 플록을 형성시키는 단계와,Adjusting the alkalinity and pH for flocculation of suspended solids in wastewater to form flocs with flocculant,

폭기조에서 황토를 투입하고 공기를 불어 넣어 호기적인 조건이 되도록 폭기하여 오폐수중 유기물을 분해하는 단계,Decomposing organic matter in the waste water by adding the ocher in the aeration tank and blowing air to aerobic conditions,

침전물과 형성된 플록을 제거한 처리수를 용존공기부상법(Dissolved Air Floatation)을 이용하여 처리수중 부유물질을 제거하는 단계,Removing suspended solids in the treated water by using dissolved air flotation (Dissolved Air Floatation);

처리수의 소포를 제거하는 단계로 이루어지는 것으로서 오폐수 처리기간이 5일 정도 소요되는 것으로 비교적 단시간에 오폐수를 처리할 수 있는 방법이다.It consists of removing the parcel of the treated water, which takes about five days to treat waste water, and is a method of treating waste water in a relatively short time.

도1은 본 발명의 오폐수 전체 처리과정을 나타낸 흐름도.1 is a flow chart showing the whole wastewater treatment process of the present invention.

이하, 본 발명의 구성을 설명하면 다음과 같다.Hereinafter, the configuration of the present invention will be described.

유량조정조에 오폐수를 저장하는 단계;Storing waste water in the flow adjustment tank;

상기 오폐수를 배관을 통해 처리조로 유입하여 산과 알칼리제로 pH를 조정하고 응집제로 플록을 형성시키는 단계;Flowing the waste water into a treatment tank through a pipe to adjust pH with acid and alkali and form flocs with flocculant;

탈수기로 상기 형성된 플록을 오폐수와 분리시키는 탈수 처리단계;A dehydration treatment step of separating the formed floc from waste water with a dehydrator;

상기 탈수 처리단계를 거친 처리수를 배출관 일측에 설치된 전기분해조를 통과시키면서 처리수중 용존솔리드를 제거하는 단계;Removing the dissolved solids in the treated water while passing through the electrolysis tank installed at one side of the discharge pipe after passing through the dehydration treatment step;

상기 전기분해조를 통과한 처리수를 배관을 통해 폭기조로 유입한 후 황토를 투입하고 혼화 폭기하여 호기성미생물에 의해 유기물을 분해하는 단계;Injecting the treated water passing through the electrolysis tank into the aeration tank through a pipe, and then introducing ocher and mixing aeration to decompose organic matter by aerobic microorganisms;

상기 폭기조의 처리수를 배관을 통해 침전조로 유입한 후 비중의 차이를 이용하여 상기 처리수중 침전물을 분리제거하는 단계;Separating the sediment in the treated water by using a difference in specific gravity after introducing the treated water of the aeration tank into the settling tank through a pipe;

상기 침전조의 처리수를 배관을 통해 반응조로 유입한 후 산 또는 알칼리제로 처리수의 pH를 조정하고 응집제로 플록을 형성시키는 단계;Flowing the treated water of the settling tank into the reaction tank through a pipe and adjusting the pH of the treated water with an acid or an alkali and forming a floc with a flocculant;

상기 반응조의 처리수를 배관을 통해 DAF부상조로 유입한 후 미세기포부상장치에 의해 처리수 중 부유물을 제거하는 단계;Removing the suspended matter in the treated water by the microbubble flotation apparatus after flowing the treated water of the reactor into the DAF flotation tank through a pipe;

상기 DAF부상조의 처리수를 배관을 통해 소포수조로 유입한 후 소포수를 살포하여 처리수 중 거품을 제거하는 단계;로 이루어진다.And flowing foamed water into the defoaming water tank through the pipe to remove the bubbles in the treated water.

상기의 구성과 같은 본 발명의 실시 예를 첨부된 도면을 참고하여 설명하면 다음과 같다.An embodiment of the present invention as described above will be described with reference to the accompanying drawings.

먼저 일 실시 예로서 1일 오폐수처리량이 150㎥/day 일 경우의 본 발명의 주요 장치 사양은 다음과 같이 구성할 수 있다.First, as an embodiment, the main device specification of the present invention when the daily wastewater treatment amount is 150 m 3 / day may be configured as follows.

유량조정조의 크기 및 용량을 보면 너비15.0(m) 길이3.5(m) 깊이4.0(m)로서 용량이 210.0(㎥)으로서 150(㎥/day)의 유입 유량을 처리할 수 있으며, 유효수심은 3.7m이고 유효용량은 194㎥로서 체류시간은 유효용량 ÷유입유량 = 194 ÷ 150 x 24(hr/day) = 31.1(hr) 시간이 되며, 부대장치로는 오폐수유입펌프와 유량계 등이 있다.In terms of the size and capacity of the flow control tank, the width is 15.0 (m), the length is 3.5 (m) and the depth is 4.0 (m), and the capacity is 210.0 (㎥), which can handle 150 (㎥ / day) inflow flow rate, and the effective depth is 3.7. m and the effective capacity is 194m3, and the residence time is the effective capacity ÷ flow rate = 194 ÷ 150 x 24 (hr / day) = 31.1 (hr) time, and the auxiliary equipments include wastewater inflow pump and flow meter.

처리조의 크기 및 용량은 너비1.0(m), 길이1.4(m), 깊이 1.3(m)이고 용량은 1.82(㎥)으로서 1일 처리 유효 유입유량은 150㎥/day이고 유효수심 1.0m, 유효용량 1.4㎥이고 체류시간 1.4 ÷150 x 24(h/d) x 60(m/h) = 1.82 min이고 부대장치로는 120~180rpm의 교반기와 1.5㎥용량의 약품탱크, 360rpm의 약품교반기 펌퍼로 구성된다The size and capacity of the treatment tank are 1.0 (m) in width, 1.4 (m) in length, 1.3 (m) in depth, and the capacity is 1.82 (㎥), effective inflow rate per day is 150㎥ / day, effective depth 1.0m, effective capacity 1.4㎥, residence time 1.4 ÷ 150 x 24 (h / d) x 60 (m / h) = 1.82 min, and additional device consists of stirrer of 120 ~ 180rpm, chemical tank of 1.5㎥ and chemical stirrer pump of 360rpm do

폭기조의 크기 및 용량은 너비 9.7(m), 길이15(m), 깊이6(m)이고 용량은 873.0(㎥)로서 체류시간은 116시간이며, 유입되는 오폐수의 BOD가 3,600mg/d㎥일 경우 BOD용적부하(kgBOD/㎥day) 3,600 x 150 x 0.01 ÷728 = 0.74이고 공기 소요량(㎥air/min)은 (aLa+bSa)x22.4/32.0x1.0/0.21x1/μx(273+Ta)/273x1/144=27.6(kgBOD/㎥day)이다.The size and capacity of the aeration tank are 9.7 (m) in width, 15 (m) in length and 6 (m) in depth. The capacity is 873.0 (㎥) and the residence time is 116 hours, and the BOD of influent wastewater is 3,600mg / d㎥. BOD volume load (kgBOD / ㎥day) 3,600 x 150 x 0.01 ÷ 728 = 0.74 and air requirement (㎥air / min) is (aLa + bSa) x22.4 / 32.0x1.0 / 0.21x1 / μx (273+ Ta) /273×1/144=27.6 (kgBOD / m 3 day).

참고로 La: BOD 제거량 533kg/day, Sa: 폭기조내 미생물량은 4,365kg, a:BOD제거량 중 산화분해율(0.31-0.18)은 0.06, 수중의 산소흡수율(5-10%)은 0.05이고 Ta: 토출공기온도는 20℃ 이다.For reference, La: BOD removal amount 533kg / day, Sa: Aeration tank microorganism amount is 4,365kg, a: BOD removal amount oxidative decomposition rate (0.31-0.18) is 0.06, oxygen absorption rate in water (5-10%) is 0.05 and Ta: The discharge air temperature is 20 ° C.

침전조는 크기 및 용량은 직경 3.5m, 깊이 3.0m로서 용량은 29㎥이고 체류시간은 4hr이며, 부대장치로는 슬러지 수집기와 슬러지 이송펌프로 이루어진다.The sedimentation tank is 3.5m in diameter and 3.0m in depth, with a capacity of 29㎥ and a residence time of 4hr. The auxiliary equipment consists of a sludge collector and a sludge transfer pump.

DAF부상조는 너비 2.0m, 길이 1.5m, 깊이 1.8m로 용량은 5.4㎥이고,DAF floating basin is 2.0m wide, 1.5m long and 1.8m deep and has a capacity of 5.4㎥,

체류시간은 43.2min이고, 부대장치로는 DAF Generator와 수위조절장치 정량펌프 등으로 구성된다.The residence time is 43.2min, and the auxiliary equipment consists of DAF generator and water level metering pump.

이하, 단계별로 처리되는 공정에 대하여 설명하면, 유량조정조에 오폐수를 저장하는 단계로 이 단계에서는 시간변화에 따른 오폐수의 농도 및 부하를 균질화하는 기능을 가지며 오폐수 처리에 있어서 완충조의 기능을 부여함으로써 후속 처리공정의 기능을 향상시키는 역할을 한다.Hereinafter, the process to be treated step by step, the step of storing the waste water in the flow rate adjustment tank in this step has the function to homogenize the concentration and load of waste water according to the time change, and to give the function of the buffer tank in the waste water treatment It serves to improve the function of the treatment process.

처리조에서는, 배관과 펌프를 이용하여 일정 처리 단위량의 오폐수를 처리조로 이송한 후 오폐수 중 협잡물 및 부유물을 덩어리(floc)지게 하여 오폐로수 중 유기물을 분리하도록 물리·화학적으로 처리하게 되는데,In the treatment tank, the wastewater of a certain treatment unit is transferred to the treatment tank by using a pipe and a pump, and then the contaminants and suspended solids in the wastewater are flocculated to be physically and chemically treated to separate organic matters in the wastewater.

이 단계에서 일어나게 되는 응집제에 의한 유기물의 응결속도와 응결력은 pH와 알카리도에 영향을 받게 되며 알카리도는 유기물의 응결작용에 있어 매우 중요하다.The coagulation rate and coagulation force of organic matter by coagulant occurring at this stage are affected by pH and alkalinity, which is very important for coagulation of organic matter.

저알카리도의 물에서는 응집제에 의해 플록형성이 잘되지 않으며 반대로 알칼리도가 아주 높을 때에는 응집제가 알칼리도와 모두 반응해 미세한 플록을 형성함으로써 큰 플록까지 성장하는데 많은 시간이 걸리고 응집제 투입량이 늘어나게 된다. 따라서 적정한 알칼리도 농도에서 응집제를 투입하면 응집제의 소모가 적고 응집이 용이하기 때문에 저탁도의 처리수를 만들 수 있다.In low alkaline water, floc is not well formed by the flocculant. On the contrary, when the alkalinity is very high, the flocculant reacts with the alkali to form a fine floc, which takes a long time to grow to a large floc and increases the flocculant input amount. Therefore, when a flocculant is added at an appropriate alkalinity concentration, the amount of flocculant consumed is low and aggregation is easy, thereby making it possible to produce low turbidity treated water.

본 발명 실시 예에 사용한 응집제로는 황산알루미늄과 고분자 응집제(PAC)를 사용했으며 pH조정을 위해서는 알칼리제인 수산화나트륨이나 소석회(수산화칼슘)를 사용했다.As the coagulant used in the embodiment of the present invention, aluminum sulfate and a polymer coagulant (PAC) were used, and sodium hydroxide or slaked lime (calcium hydroxide), which are alkaline agents, were used for pH adjustment.

황산알루미늄의 최적 응집영역은 농도 20~50mg/ℓ에서 pH6.8~8.2이고, 그 보다 낮은 농도일 때는 pH6.2~6.8이며, 고분자 응집제의 응집영역은 pH7.3을 중심으로 나타난다. 따라서 소석회를 오폐수에 투입하여 상기한 응집제의 최적 응집영역인 pH를 6.8 ~ 7.3 에 맞추도록 일정량을 투입한 후 황산알루미늄과 고분자 응집제를 투입하여 오폐수 중의 현탁물질을 응집시키는 것으로서 일반적인 오폐수의 처리방법과 동일하다.The optimal coagulation area of aluminum sulfate is pH6.8-8.2 at concentrations of 20-50 mg / l, pH 6.2-8.8 at lower concentrations, and the coagulation area of the polymer coagulant centers around pH7.3. Therefore, by adding slaked lime to the waste water, a certain amount is added to adjust the pH of the coagulant to the optimum coagulation range of 6.8 to 7.3. Then, aluminum sulfate and a polymer coagulant are added to agglomerate suspended solids in the waste water. same.

상기와 같이 형성된 플록은 통상의 탈수기를 이용하여 제거시키고 처리수는 배관을 통해 전기분해조를 통해 폭기조로 이송시키는데, 전기분해조에서는 처리수에 용해된 유기물질을 전기분해조 내부에 설치된 알루미늄판에 DC전류를 흐르게 함으로써 처리수에 용해된 유기성물질이 분해되며, 전기분해조를 거친 처리수는 BOD와 COD가 낮아지게 되는 것이다.The floc formed as described above is removed using a conventional dehydrator and the treated water is transferred to an aeration tank through an electrolysis tank through a pipe. In the electrolysis tank, an aluminum plate installed in the electrolysis tank is used to transfer organic substances dissolved in the treated water. By flowing a DC current to the organic matter dissolved in the treated water is decomposed, and the treated water passed through the electrolysis tank is to lower the BOD and COD.

폭기조에서는 펌프를 이용해서 처리수에 공기를 불어넣는 방식으로 폭기시키고, 본 발명에서 최종 처리된 물 가운데 방류시키지 않은 일부를 폭기조 공중에 살포하여 처리수에 산소를 충분히 공급하여 호기성 미생물의 활동성이 높아지게 하고처리수에 산화작용을 유발함으로써 빠른 속도로 처리수중 유기물이 분해가 이루어지게 된다.In the aeration tank, the aeration is performed by blowing air into the treated water using a pump, and a part of the final treated water in the present invention is sprayed into the aeration tank air to supply sufficient oxygen to the treated water to increase the activity of aerobic microorganisms. By causing oxidation in the treated water, organic matter in the treated water is rapidly decomposed.

폭기와 아울러 호기성 미생물의 생장환경을 최적화시켜 미생물의 활동성을 높이도록 황토를 폭기조에 일정량 투입한다.In addition to aeration, a certain amount of loess is injected into the aeration tank to optimize the growth environment of aerobic microorganisms to increase the activity of the microorganisms.

다음으로 폭기조에서 배관을 통해 반응조로 이송시킨 후 다시 화학적인 방법으로 부유물을 제거하여 BOD와 COD를 낮추는 단계로, 상기한 처리조에서와 같이 소석회 등 알칼리제로 적정 응집환경이 되도록 pH를 조정한 후 고분자 응집제 등을 이용해서 처리수 중 부유물을 플록으로 형성하고 이를 스크래퍼장치 등 물리적인 방법으로 제거한다.Next, the aeration tank is transferred to the reaction tank through a pipe, and then the suspended solids are removed by a chemical method to lower BOD and COD. The pH is adjusted to an appropriate coagulation environment with alkali chemicals such as slaked lime as in the above treatment tank. A flocculant in the treated water is formed into a floc using a polymer flocculant and the like and removed by a physical method such as a scraper device.

상기 단계를 거친 처리수를 DAF(Dissolved air flotation)부상조로 배관을 통해 이송한 후 부유물을 제거하는데, DAF(용존공기)부상법은 물보다 가벼운 유지류나 미생물슬러지, 부유고형물 등에 미세한 기포를 부착시켜 물보다 비중을 작게하여 수면 위로 분리, 제거하는 기술로서, 압력탱크에서 5~7 기압 이하에서 7분 이내로 공기를 용존 시킨 후 부상조에서 대기압으로 노출되면서 발생되는 기포에 입자를 부상시키는데, 미세하고 가벼운 입자로서 기포입자의 크기는 20㎛ 이하로서 처리능력 및 처리효율이 좋아 단 시간에 용이하게 제거 할 수 있다.The treated water is transferred through a pipe to a dissolved air flotation (DAF) flotation tank to remove suspended matter. The DAF (dissolved air) flotation method attaches fine bubbles to oils, microorganism sludge, and suspended solids that are lighter than water. It is a technology that separates and removes water on the surface by making specific gravity smaller than water.It dissolves air within 7 minutes under 5 ~ 7 atmospheres in a pressure tank, and then floats particles to bubbles generated by exposure to atmospheric pressure in a floating tank. As light particles, the size of bubble particles is 20㎛ or less, and can be easily removed in a short time due to good processing capacity and processing efficiency.

마지막으로 상기 DAF부상조에서 배관을 통해 소포수조로 이송된 처리수를 소포수조에서 처리수에 함유된 기포를 제거하는 단계로서 소포수를 소포수조위에 살포하게 하여 처리수상의 기포를 제거하면 2급수질 기준치인 BOD 30ppm~50ppm 이하로 되는 것이다.Finally, in the DAF flotation tank, the treated water transferred to the parcel tank through the pipe is a step of removing the air bubbles contained in the treated water in the parcel tank so that the parcel water is sprayed on the parcel tank to remove bubbles in the treated water. BOD 30ppm-50ppm or less which is a water quality standard value will become.

이와 같이 처리된 물은 방류하거나 본 발명 폭기조 등에 공급수로 사용할 수 있는 것이다.The water treated in this way can be discharged or used as feed water for the aeration tank of the present invention.

이상과 같은 본 발명의 효과는 다음과 같다.The effects of the present invention as described above are as follows.

전량 해양투기로만 처리되는 음식물쓰레기의 침출수를 2급수 기준으로 처리할 수 있음으로써 환경오염을 방지할 수 있는 것이고,By treating the leachate of food waste, which is treated only by ocean dumping on a second-grade basis, environmental pollution can be prevented.

톤당 처리비에 있어서도 종래 해양투기시에는 25,000원/톤이나, 본 발명의 처리방법으로 처리할 경우 13,000원/톤으로 매우 경제적이며, 처리기간에 있어서 일반의 유기물이 함유된 폐수를 정화하는데 소요되는 기간이 10일에서 20일 정도 소요되는데 비해 본 발명은 5일 정도로 비교적 짧은 시간 안에 처리할 수 있음으로써 고효율 저 비용을 실현 한 것이다.In terms of treatment cost per ton, it is very economical at 25,000 won / ton in conventional dumping at sea, but 13,000 won / ton when treated by the treatment method of the present invention, and the time required to purify wastewater containing general organic matters in the treatment period. While the 10 to 20 days are required, the present invention can be processed in a relatively short time, such as 5 days, thereby achieving high efficiency and low cost.

Claims (1)

유량조정조에 오폐수를 저장하는 단계;Storing waste water in the flow adjustment tank; 상기 오폐수를 배관을 통해 처리조로 유입하여 산과 알칼리제로 pH를 조정하고 응집제로 플록을 형성시키는 단계;Flowing the waste water into a treatment tank through a pipe to adjust pH with acid and alkali and form flocs with flocculant; 탈수기로 상기 형성된 플록을 오폐수와 분리시키는 탈수 처리단계;A dehydration treatment step of separating the formed floc from waste water with a dehydrator; 상기 탈수 처리단계를 거친 처리수를 배출관 일측에 설치된 전기분해조를 통과시키면서 처리수중 용존솔리드를 제거하는 단계;Removing the dissolved solids in the treated water while passing through the electrolysis tank installed at one side of the discharge pipe after passing through the dehydration treatment step; 상기 전기분해조를 통과한 처리수를 배관을 통해 폭기조로 유입한 후 황토를 투입하고 혼화·폭기하여 호기성 미생물에 의해 유기물을 분해하는 단계;Introducing the treated water passing through the electrolysis tank into the aeration tank through a pipe, and then adding ocher, mixing and aeration to decompose organic matter by aerobic microorganisms; 상기 폭기조의 처리수를 배관을 통해 침전조로 유입한 후 비중의 차이를 이용하여 상기 처리수 중 침전물을 분리 제거하는 단계;Separating the sediment in the treated water by using a difference in specific gravity after introducing the treated water of the aeration tank into the settling tank through a pipe; 상기 침전조의 처리수를 배관을 통해 반응조로 유입한 후 산 또는 알칼리제로 처리수의 pH를 조정하고 응집제로 플록을 형성시키는 단계;Flowing the treated water of the settling tank into the reaction tank through a pipe and adjusting the pH of the treated water with an acid or an alkali and forming a floc with a flocculant; 상기 반응조의 처리수를 배관을 통해 DAF부상조로 유입한 후 미세기포부상장치에 의해 처리수 중 부유물을 제거하는 단계;Removing the suspended matter in the treated water by the microbubble flotation apparatus after flowing the treated water of the reactor into the DAF flotation tank through a pipe; 상기 DAF부상조의 처리수를 배관을 통해 소포수조로 유입한 후 소포수를 살포하여 처리수 중 거품을 제거하는 단계;로 이루어진 것을 특징으로 하는 음식물쓰레기 침출수의 처리방법.And removing the foam from the treated water by introducing the treated water of the DAF flotation tank into the parcel water tank through a pipe, and then spraying the parcel water.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100602151B1 (en) * 2006-04-07 2006-07-19 (주)대성그린테크 Ds-gl ts
KR100920454B1 (en) * 2007-10-24 2009-10-08 민희정 Sewage disposal plant sewage disposal method
KR100922381B1 (en) * 2009-04-21 2009-10-16 권혁성 Foam removing apparatus and waste food reuse system using thereof
KR101006684B1 (en) * 2008-02-27 2011-01-10 용 득 박 Sewage disposal plant sewage disposal method
CN111499051A (en) * 2020-05-28 2020-08-07 马鞍山市华清环保工程有限公司 Hydrofluoric acid waste liquid treatment reaction kettle and treatment method thereof
CN112777851A (en) * 2020-12-17 2021-05-11 嘉兴天渊环保技术服务有限公司 Kitchen waste pretreatment process

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100602151B1 (en) * 2006-04-07 2006-07-19 (주)대성그린테크 Ds-gl ts
KR100920454B1 (en) * 2007-10-24 2009-10-08 민희정 Sewage disposal plant sewage disposal method
KR101006684B1 (en) * 2008-02-27 2011-01-10 용 득 박 Sewage disposal plant sewage disposal method
KR100922381B1 (en) * 2009-04-21 2009-10-16 권혁성 Foam removing apparatus and waste food reuse system using thereof
CN111499051A (en) * 2020-05-28 2020-08-07 马鞍山市华清环保工程有限公司 Hydrofluoric acid waste liquid treatment reaction kettle and treatment method thereof
CN112777851A (en) * 2020-12-17 2021-05-11 嘉兴天渊环保技术服务有限公司 Kitchen waste pretreatment process

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