KR20240071701A - Treatment method of livestock excretions waste water - Google Patents

Treatment method of livestock excretions waste water Download PDF

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KR20240071701A
KR20240071701A KR1020220153496A KR20220153496A KR20240071701A KR 20240071701 A KR20240071701 A KR 20240071701A KR 1020220153496 A KR1020220153496 A KR 1020220153496A KR 20220153496 A KR20220153496 A KR 20220153496A KR 20240071701 A KR20240071701 A KR 20240071701A
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effluent
livestock waste
urobilin
livestock
weight
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KR1020220153496A
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Korean (ko)
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신동훈
정종화
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팜스링크 주식회사
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Priority to KR1020220153496A priority Critical patent/KR20240071701A/en
Publication of KR20240071701A publication Critical patent/KR20240071701A/en

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • 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
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • 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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • 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
    • C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry

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  • 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)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

본 발명은 가축분뇨 방류수의 처리방법에 관한 것으로, 더욱 상세하게는 가축분뇨 방류수에 오존을 주입하고 염화제1철을 혼합하여 방류수 내 우로빌린을 분해하는 우로빌린분해단계, 상기 우로빌린분해단계를 통해 우로빌린이 분해된 가축분뇨 방류수에 굴패각 분말을 투입하여 방류수 내 유기물질을 제거하는 유기물질제거단계, 상기 유기물질제거단계를 통해 유기물질이 제거된 가축분뇨 방류수를 침전조로 이송한 후에 가축분뇨 방류수 내 부유물질을 침전시키는 침전물제거단계 및 상기 침전물제거단계를 통해 침전물이 제거된 가축분뇨 방류수를 여과조로 이송하여 여과하는 여과단계로 이루어진다.
상기의 과정으로 이루어지는 가축분뇨 방류수의 처리방법은 가축분뇨 방류수의 색도를 낮추고 유기물질을 제거하여 하천이나 주변환경의 오염을 방지하는 효과를 나타낸다.The present invention relates to a method of treating livestock waste effluent, and more specifically, a urobilin decomposition step of injecting ozone into livestock waste effluent and mixing ferrous chloride to decompose urobilin in the effluent, and the urobiline decomposition step. An organic material removal step of removing organic substances in the effluent by adding oyster shell powder to the livestock waste effluent from which urobilin has been decomposed, and the livestock waste effluent from which the organic substances have been removed through the organic material removal step is transferred to a sedimentation tank, and then the livestock waste is It consists of a sediment removal step of precipitating suspended solids in the discharged water, and a filtration step of transferring the livestock manure effluent from which sediments have been removed through the sediment removal step to a filtration tank and filtering it.
The method of treating livestock waste discharged water through the above process has the effect of reducing the color of livestock waste discharged water and removing organic substances, thereby preventing pollution of rivers and surrounding environments.

Description

가축분뇨 방류수의 처리방법 {TREATMENT METHOD OF LIVESTOCK EXCRETIONS WASTE WATER}Method of treating livestock waste discharged water {TREATMENT METHOD OF LIVESTOCK EXCRETIONS WASTE WATER}

본 발명은 가축분뇨 방류수의 처리방법에 관한 것으로, 더욱 상세하게는 가축분뇨 방류수의 색도를 낮추고 유기물질을 제거하여 하천이나 주변환경의 오염을 방지하는 가축분뇨 방류수의 처리방법에 관한 것이다.The present invention relates to a method of treating livestock waste effluent, and more specifically, to a method of treating livestock waste effluent, which reduces the color of livestock waste effluent and removes organic substances to prevent pollution of rivers and surrounding environments.

일반적으로 가축을 기르는 축사에서 배출되는 가축의 분뇨는 고형물인 분과 액상인 뇨로 분류되는데, 고형물인 가축 분은 유기질비료 등으로 사용될 수 있으므로 그 처리가 용이하지만, 액체인 가축 뇨는 악취와 수질오염성분이 있기 때문에 그 처리에 많은 어려움이 뒤따르게 된다.In general, livestock waste discharged from livestock farms is classified into solid waste and liquid urine. Solid livestock waste can be used as organic fertilizer, so it is easy to dispose of, but liquid livestock waste has bad odor and water pollutants. Because of this, many difficulties arise in processing it.

이러한 이유로 인해 종래의 통상적인 가축분뇨 처리방법은 가축이 배설한 고형물인 분과 액체인 뇨를 분리 처리한 다음, 고형물인 분은 퇴비화하는 한편, 액체인 뇨는 약품처리 및 미생물처리 등으로 고도처리하여 수질을 오염시키는 않게 하여 하천 등으로 방류하는 방법으로 처리할 것을 권장하고 있다.For this reason, the conventional method of treating livestock waste is to separate solid waste and liquid urine excreted by livestock and then compost the solid waste, while highly treating the liquid urine with chemical treatment and microbial treatment. It is recommended that water be disposed of by discharging it into rivers, etc., so as not to contaminate water quality.

그러나, 상기와 같은 종래의 가축분뇨 처리방법은 가축이 배설한 분과 뇨를 분리처리하는 처리장치를 설치하거나 또는 가축분뇨 정화시설을 구비해야 하는데, 가축을 사육하는 축산 사육농가는 대부분 영세하기 때문에 가축분뇨를 처리하기 위한 고가의 처리장치를 설치하는 데에는 경제적으로 어려움이 뒤따르게 되며, 또한 고가의 정화시설을 설치 및 관리하더라도 정화시설에서 방류되는 방류수의 색이 탁하며 유기성분이나 중금속과 같은 오염물질이 완전히 제거되지 못하는 문제점이 있었다.However, the conventional method of treating livestock waste as described above requires installing a treatment device that separates excrement from livestock and urine or providing a livestock waste purification facility. However, since most livestock farms that raise livestock are small, they do not use livestock. It is economically difficult to install expensive treatment equipment to treat waste, and even if expensive purification facilities are installed and managed, the effluent discharged from the purification facilities is cloudy in color and contains contaminants such as organic components and heavy metals. There was a problem that could not be completely eliminated.

또한, 일반적으로 가축분뇨 방류수의 색도에 대하여 난분해성이라는 수식어를 포함하는 이유는 일반적인 색도 유발 유기물과 다르게 가축분뇨에서 발생된 색도는 체내 대사과정에서 헤모글로빈의 대사산물인 '우로빌린(Urobilin)'이라는 물질로 정화처리 생물반응조내 미생물박테리아에 의해서 처리가 불가능하고 활성탄 등의 흡착제로도 처리가 미흡한 현상을 보이고 있기 때문이다.In addition, the reason why the color of livestock waste effluent is generally included with the modifier 'hardly decomposable' is that, unlike general color-causing organic matter, the color generated from livestock waste is called 'Urobilin', a metabolite of hemoglobin during the metabolic process in the body. This is because purification treatment with substances is impossible due to microbial bacteria in the biological reactor, and treatment with adsorbents such as activated carbon is also insufficient.

이러한 우로빌린이 고농도로 포함된 가축분뇨는 우로빌린의 제거가 제대로 이루어지지 않은 상태에서 방류되고 있으며, 우로빌린이 함유된 방류수는 육안상 뇨성분을 연상시켜 불쾌감을 유발하는 문제점이 있었다.Livestock manure containing such high concentrations of urobilin is discharged without proper removal of urobilin, and the effluent containing urobilin is reminiscent of urine components to the naked eye, causing discomfort.

한국특허등록 제10-0493197호(2005.05.25.)Korean Patent Registration No. 10-0493197 (May 25, 2005) 한국특허등록 제10-1932599호(2018.12.18.)Korean Patent Registration No. 10-1932599 (2018.12.18.)

본 발명의 목적은 가축분뇨 방류수의 색도를 낮추고 유기물질을 제거하여 하천이나 주변환경의 오염을 방지하는 효과를 나타내는 가축분뇨 방류수의 처리방법을 제공하는 것이다.The purpose of the present invention is to provide a method for treating livestock waste effluent, which has the effect of reducing the color of livestock waste effluent and removing organic substances to prevent pollution of rivers and surrounding environments.

본 발명의 목적은 가축분뇨 방류수에 오존을 주입하고 염화제1철을 혼합하여 우로빌린을 분해하는 우로빌린분해단계, 상기 우로빌린분해단계를 통해 우로빌린이 분해된 가축분뇨 방류수에 굴패각 분말을 투입하여 방류수 내 유기물질을 제거하는 유기물질제거단계, 상기 유기물질제거단계를 통해 유기물질이 제거된 가축분뇨 방류수를 침전조로 이송한 후에 방류수 내 부유물질을 침전시키는 침전물제거단계 및 상기 침전물제거단계를 통해 침전물이 제거된 가축분뇨 방류수를 여과조로 이송하여 여과하는 여과단계로 이루어지는 것을 특징으로 하는 가축분뇨 방류수의 처리방법을 제공함에 의해 달성된다.The purpose of the present invention is to inject ozone into livestock waste effluent and mix it with ferrous chloride to decompose urobilin, and to add oyster shell powder to the livestock waste effluent in which urobilin has been decomposed through the urobilin decomposition step. An organic substance removal step of removing organic substances in the effluent, a sediment removal step of transferring the livestock manure effluent from which organic substances have been removed through the organic substance removal step to a sedimentation tank, and then precipitating suspended substances in the effluent; and the sediment removal step. This is achieved by providing a method of treating livestock waste effluent, which is characterized in that it consists of a filtration step of transferring livestock waste effluent from which sediments have been removed through a filtration tank and filtering it.

본 발명의 바람직한 특징에 따르면, 상기 우로빌린분해단계는 가축분뇨 방류수 100 중량부에 시간당 0.0003 내지 0.0007 중량부의 오존을 주입하면서, 상기 가축분뇨 방류수 100 중량부 대비 염화제1철 0.0005 내지 0.001 중량부를 혼합하여 이루어지는 것으로 한다.According to a preferred feature of the present invention, the urobilin decomposition step involves injecting 0.0003 to 0.0007 parts by weight of ozone per hour into 100 parts by weight of livestock manure effluent, and mixing 0.0005 to 0.001 parts by weight of ferrous chloride with respect to 100 parts by weight of livestock manure effluent. This is to be done.

본 발명의 더 바람직한 특징에 따르면, 상기 유기물질제거단계는 상기 우로빌린분해단계를 통해 우로빌린이 분해된 가축분뇨 방류수 100 중량부에 굴패각 분말 0.002 내지 0.004 중량부를 혼합하여 이루어지는 것으로 한다.According to a more preferred feature of the present invention, the organic material removal step is performed by mixing 0.002 to 0.004 parts by weight of oyster shell powder with 100 parts by weight of livestock waste effluent in which urobilin has been decomposed through the urobilin decomposition step.

본 발명의 더욱 바람직한 특징에 따르면, 상기 굴패각 분말은 500 내지 1500℃의 온도로 5 내지 10시간 동안 소성된 굴패각을 50 내지 200 메시의 입자크기로 분쇄하여 제조되는 것으로 한다.According to a more preferred feature of the present invention, the oyster shell powder is manufactured by grinding oyster shell shells calcined at a temperature of 500 to 1500° C. for 5 to 10 hours to a particle size of 50 to 200 mesh.

본 발명에 따른 가축분뇨 방류수의 처리방법은 가축분뇨 방류수의 색도를 낮추고 유기물질을 제거하여 하천이나 주변환경의 오염을 방지하는 탁월한 효과를 나타낸다.The method of treating livestock waste effluent according to the present invention has an excellent effect in preventing pollution of rivers and surrounding environments by reducing the color of livestock waste effluent and removing organic substances.

도 1은 본 발명에 따른 가축분뇨 방류수의 처리방법을 나타낸 순서도이다.
도 2는 본 발명의 실시예 1 및 비교예 1을 통해 처리된 가축분류 방류수의 와관을 촬영하여 나타낸 사진이다.Figure 1 is a flowchart showing a method of treating livestock waste effluent according to the present invention.
Figure 2 is a photograph showing the pipes of livestock effluent treated through Example 1 and Comparative Example 1 of the present invention.

이하에는, 본 발명의 바람직한 실시예와 각 성분의 물성을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.Below, preferred embodiments of the present invention and the physical properties of each component are described in detail, but the purpose is to provide a detailed description so that a person skilled in the art can easily carry out the invention. This does not mean that the technical idea and scope of the present invention are limited.

본 발명에 따른 가축분뇨 방류수의 처리방법은 가축분뇨 방류수에 오존을 주입하고 염화제1철을 혼합하여 방류수 내 우로빌린을 분해하는 우로빌린분해단계(S101), 상기 우로빌린분해단계(S101)를 통해 우로빌린이 분해된 가축분뇨 방류수에 굴패각 분말을 투입하여 방류수 내 유기물질을 제거하는 유기물질제거단계(S103), 상기 유기물질제거단계(S103)를 통해 유기물질이 제거된 가축분뇨 방류수를 침전조로 이송한 후에 방류수 내 부유물질을 침전시키는 침전물제거단계(S105) 및 상기 침전물제거단계(S105)를 통해 침전물이 제거된 방류수를 여과조로 이송하여 여과하는 여과단계(S107)로 이루어진다.The method of treating livestock waste effluent according to the present invention includes a urobilin decomposition step (S101) of injecting ozone into livestock waste effluent and mixing ferrous chloride to decompose urobilin in the effluent; An organic matter removal step (S103) in which oyster shell powder is added to the livestock waste effluent from which urobilin has been decomposed to remove organic substances in the effluent, and the livestock waste effluent from which organic substances have been removed through the organic matter removal step (S103) is placed in a sedimentation tank. It consists of a sediment removal step (S105) in which suspended solids in the effluent are precipitated after transfer to the effluent, and a filtration step (S107) in which the effluent from which sediments have been removed through the sediment removal step (S105) is transferred to a filtration tank and filtered.

상기 우로빌린분해단계(S101)는 가축분뇨 처리장치에 구비된 저장조에 모아진 방류수에 오존을 주입하고 염화제1철을 혼합하여 방류수 내 우로빌린을 분해하는 단계로, 상기 우로빌린분해단계는 가축분뇨 방류수 100 중량부에 시간당 0.0003 내지 0.0007 중량부의 오존을 주입하면서, 상기 가축분뇨 방류수 100 중량부 대비 염화제1철 0.0005 내지 0.001 중량부를 혼합하는 과정으로 이루어진다.The urobilin decomposition step (S101) is a step of decomposing urobilin in the effluent by injecting ozone into the effluent collected in the storage tank provided in the livestock manure treatment device and mixing it with ferrous chloride. It consists of injecting 0.0003 to 0.0007 parts by weight of ozone per hour into 100 parts by weight of effluent, and mixing 0.0005 to 0.001 parts by weight of ferrous chloride with respect to 100 parts by weight of livestock manure effluent.

난분해성 물질인 우로빌린을 분해하기 위해서는, 오존 분자에 전자를 공급하여 오존 분자를 환원 및 오조나이드 라디칼(Ozonide radical)을 형성시킨 후에 강력한 산화제인 하이드록실 라디칼 생성을 촉진시키는 전자 공여체 역할을 하는 물질인 염화제1철을 오존 분자가 주입된 가축분뇨 방류수 내에 함께 투입하여 가축분뇨내 난분해성 색도물질인 우로빌린을 분해하게 된다.In order to decompose urobilin, a non-degradable substance, a substance acts as an electron donor that supplies electrons to ozone molecules to reduce them and form ozonide radicals, and then promotes the creation of hydroxyl radicals, a powerful oxidizing agent. Phosphorus ferrous chloride is added to livestock waste effluent injected with ozone molecules to decompose urobilin, a non-degradable color substance in livestock waste.

상기와 같은 과정으로 이루어지는 우로빌린의 분해과정을 아래 반응식 1,2에 나타내었다.The decomposition process of urobilin, which is accomplished through the above process, is shown in Schemes 1 and 2 below.

<반응식 1> 하이드록실 라디칼의 생성<Scheme 1> Generation of hydroxyl radicals

Fe2+ → Fe3+ + e- Fe 2+ → Fe 3+ + e -

e- + O3 →·O3 - e - + O 3 →·O 3 -

O3 - + H+ ↔·HO3 O 3 - + H + ↔·HO 3

HO3 →·OH + O2 HO 3 →·OH + O 2

상기 반응식 1에 나타낸 것처럼 하이드록실 라디칼은 우로빌린을 분해하는 과정에서 무작위적인 반응특성으로 인해 가축분뇨 방류수 내 난분해성 유기물질인 잔류 의약품이나 고분자응집제 등의 성분도 함께 분해하여 방류수 내에 총유기탄소를 50 내지 95% 까지 추가로 제거해주는 효과를 나타내며, 해당 반응속도는 가축분뇨 방류수 색도제거 테스트결과, 오존 단독공정을 사용했을 때보다 약 67배 더 빠른 것으로 나타났다.As shown in Scheme 1, hydroxyl radicals, due to their random reaction characteristics in the process of decomposing urobilin, also decompose components such as residual pharmaceuticals and polymer coagulants, which are non-degradable organic substances in livestock waste effluent, reducing the total organic carbon in the effluent by 50%. It has the effect of additionally removing up to 95%, and the reaction speed was found to be about 67 times faster than when ozone alone was used, according to a test to remove color from livestock waste effluent.

<반응식 2> 하이드록실 라디칼에 의해 우로빌린의 산화반응<Scheme 2> Oxidation reaction of urobilin by hydroxyl radical

C33H42N4O6 + 150·OH → 33CO2 + 90H2O + 4NH3 C 33 H 42 N 4 O 6 + 150·OH → 33CO 2 + 90H 2 O + 4NH 3

상기 반응식 2에 나타낸 것처럼, 가축분뇨 정화처리 방류수의 잔류 난분해성 색도 및 유기물질의 신속한 제거가 일어나게 되는데, 잔류 난분해성 색도물질을 대표하는 성분인 우로빌린은 하이드록실라디칼에 의한 산화되어 방류수의 색이 투명하게 전환될 수 있다.As shown in Scheme 2, rapid removal of residual non-degradable color and organic substances in livestock waste purification treatment effluent occurs. Urobilin, a representative component of residual non-decomposable color material, is oxidized by hydroxyl radicals to change the color of the effluent. This can be converted transparently.

이때, 상기 오존의 주입량은 가축분뇨 방류수에 함유된 우로빌린의 농도에 따라 가변적이다. 또한, 상기 염화제1철의 함량이 가축분뇨 정화처리 방류수 100 중량부 대비 0.0005 중량부 미만이면 상기의 효과가 미미하며, 상기 염화제1철의 함량이 0.001 중량부를 초과하게 되면 상기의 효과는 크게 향상되지 않으면서 처리비용을 지나치게 증가시키기 때문에 바람직하지 못하다.At this time, the injection amount of ozone varies depending on the concentration of urobilin contained in the livestock manure effluent. In addition, if the content of ferrous chloride is less than 0.0005 parts by weight compared to 100 parts by weight of livestock waste purification treatment effluent, the above effect is minimal, and if the content of ferrous chloride exceeds 0.001 part by weight, the above effect is greatly reduced. This is undesirable because it increases processing costs excessively without improving the process.

상기 유기물질제거단계(S103)는 상기 우로빌린분해단계(S101)를 통해 우로빌린이 분해된 가축분뇨 방류수에 굴패각 분말을 투입하여 방류수 내 유기물질을 제거하는 단계로, 상기 우로빌린분해단계(S101)를 통해 우로빌린이 분해된 가축분뇨 방류수 100 중량부에 굴패각 분말 0.002 내지 0.004 중량부를 혼합하여 이루어지는 것이 바람직하다.The organic matter removal step (S103) is a step of removing organic substances in the effluent by adding oyster shell powder to the livestock waste effluent in which urobilin has been decomposed through the urobilin decomposition step (S101). ) It is preferable to mix 0.002 to 0.004 parts by weight of oyster shell powder with 100 parts by weight of livestock waste effluent in which urobilin has been decomposed through ).

상기와 같이 굴패각 분말이 함유되면 상기 우로빌린분해단계(S101)를 통해 우리빌린 분해되어 색도가 개선된 방류수 내에 함유된 중금속이나 3가철 성분 등을 굴패각 분말로 흡착 및 응집시켜 방류수 내에 중금속을 제거할 뿐만 아니라 3가철로 인해 발생하는 색도가 낮아져 방류수의 색도를 더욱 투명하게 개선할 수 있다.When oyster shell powder is contained as described above, heavy metals or trivalent iron components contained in the discharged water whose color is improved by decomposing uribilin through the urobilin decomposition step (S101) are adsorbed and coagulated with the oyster shell powder to remove heavy metals in the discharged water. In addition, the chromaticity caused by trivalent iron is lowered, making it possible to improve the chromaticity of the discharged water to make it more transparent.

상기 유기물질제거단계(S103)에서 방류수 내에 중금속이나 3가철 등을 흡착하는 과정을 아래 반응식 3에 나타내었다.The process of adsorbing heavy metals, trivalent iron, etc. in the discharged water in the organic material removal step (S103) is shown in Scheme 3 below.

<반응식 3><Scheme 3>

3CaCO3 + 2Fe3+ + 6Cl- → Fe2(CO3)3 + 3CaCl2 3CaCO 3 + 2Fe 3+ + 6Cl - → Fe 2 (CO 3 ) 3 + 3CaCl 2

상기 반응식 3에 나타낸 것처럼, 3가철 성분 등을 제거할 수 있을 뿐만 아니라, 굴패각 분말의 다공성 구조로 인해 방류수 내에 함유된 유기물질을 추가로 흡착하여 제거할 수 있기 때문에 방류수의 여과효과를 더욱 향상시킬 수 있다. As shown in Scheme 3, not only can trivalent iron components be removed, but the porous structure of oyster shell powder can additionally adsorb and remove organic substances contained in the effluent, thereby further improving the filtration effect of the effluent. You can.

이때, 상기 굴패각 분말은 0.002 내지 0.004 중량부가 함유되며, 500 내지 1500℃의 온도로 5 내지 10시간 동안 소성된 굴패각을 50 내지 200 메시의 입자크기로 분쇄하여 제조되는 것이 바람직한데, 상기의 과정을 통해 제조되는 굴패각 분말은 다공성으로 비표면적이 상당히 크고, 화학적 조성은 CaO 50 내지 51%. MgO 0.5 내지 0.6%, K2O 0.04 내지 0.06%, SiO2 0.3 내지 0.5% 및 기타 성분 1.5 내지 1.7%이며, 감열감량이 46 내지 48%다.At this time, the oyster shell powder contains 0.002 to 0.004 parts by weight, and is preferably produced by grinding the oyster shell shells calcined for 5 to 10 hours at a temperature of 500 to 1500 ° C. to a particle size of 50 to 200 mesh, using the above process. The oyster shell powder produced is porous and has a fairly large specific surface area, and its chemical composition is 50 to 51% CaO. MgO is 0.5 to 0.6%, K 2 O 0.04 to 0.06%, SiO 2 0.3 to 0.5%, and other components are 1.5 to 1.7%, and the thermal loss is 46 to 48%.

상기와 같은 감열감량을 나타내는 이유는 이는 패각의 주성분인 탄산칼슘(CaCO3)이 소성과정을 통해 생석회(CaO)로 변화할 때, 이산화탄소(CO2)가 증발하면서 보다 다공성으로 개질되고, 많은 수의 전하가 분포하게 된는데, 따라서 이러한 다공조직과 분자표면의 전하분포에 의해 흡착성능이 개선되는 것이다.The reason for the above-mentioned heat loss is that when calcium carbonate (CaCO 3 ), the main component of the shell, changes into quicklime (CaO) through the calcination process, carbon dioxide (CO 2 ) evaporates and becomes more porous, forming a large number of The charges are distributed, and thus the adsorption performance is improved by the charge distribution on the porous structure and molecular surface.

또한, 상기의 생석회 성분은 물과 수화반응을 하므로 소성된 굴패각 분말은 무기고화제로서의 기능을 나타낼 수도 있다.In addition, since the quicklime component undergoes a hydration reaction with water, the calcined oyster shell powder may function as an inorganic solidifying agent.

상기 굴패각 분말의 함량이 0.002 중량부 미만이면 상기의 효과가 미미하며, 상기 굴패각 분말의 함량이 0.004 중량부를 초과하게 되면 상기의 효과는 크게 향상되지 않으면서 처리비용을 지나치게 증가시키기 때문에 바람직하지 못하다.If the content of the oyster shell powder is less than 0.002 parts by weight, the effect is minimal, and if the content of the oyster shell powder exceeds 0.004 parts by weight, the effect is not significantly improved and the processing cost is excessively increased, which is undesirable.

상기 침전물제거단계(S105)는 상기 유기물질제거단계(S103)를 통해 유기물질이 제거된 가축분뇨 방류수를 침전조로 이송한 후에 방류수 내에 부유물질을 침전시키는 단계로, 이때, 상기 침전조나 침전조건은 통상적인 가축분뇨 방류수 처리 과정에서 진행되는 장치 및 조건으로 이루어질 수 있다.The sediment removal step (S105) is a step of transferring the livestock manure effluent from which organic materials have been removed through the organic material removal step (S103) to a sedimentation tank and then settling suspended solids in the effluent. At this time, the sedimentation tank or sedimentation conditions are: It can be made up of devices and conditions used in the normal livestock waste effluent treatment process.

상기 여과단계(S107)는 상기 침전물제거단계(S105)를 통해 침전물이 제거된 방류수를 여과조로 이송하여 여과하는 단계로, 상기 침전물제거단계(S105)를 통해 침전물이 제거된 방류수 여재가 충전된 상태에서 송풍과 간헐적인 회전을 시키면서 여과시키는 과정으로 이루어진다.The filtration step (S107) is a step in which the effluent water from which sediments have been removed through the sediment removal step (S105) is transferred to a filtration tank and filtered, and the effluent water filter medium from which sediments have been removed through the sediment removal step (S105) is charged. It consists of a filtration process with blowing and intermittent rotation.

이때, 여과조의 구조나 여과조건은 통상적인 가축분뇨 방류수 처리 과정에서 진행되는 장치 및 조건으로 이루어질 수 있는데, 상기 여과조의 지지대 및 방류수 순환조와 방류수 폭기조가 구비되는 것이 바람직하다.At this time, the structure or filtration conditions of the filtration tank may be comprised of devices and conditions used in a typical livestock waste effluent treatment process, and it is preferable that the filtration tank be provided with a support, a effluent circulation tank, and a effluent aeration tank.

또한, 상기 여과조에는 상기 방류수 순환조에 유입된 방류수를 여과조로 재순환 하거나 방류수 폭기조로 이송하기 위한 펌프가 설치된 이송관이 마련되고, 상기 방류수 폭기조에는 처리된 방류수를 외부로 배출할 수 있도록 펌프가 설치된 배출관이 마련되는 것이 더욱 바람직하다.In addition, the filtration tank is provided with a transfer pipe equipped with a pump for recirculating the effluent flowing into the effluent circulation tank to the filtration tank or transferring it to the effluent aeration tank, and the effluent aeration tank is provided with a discharge pipe equipped with a pump to discharge the treated effluent to the outside. It is more desirable for this to be provided.

또한, 상기 여과조에는 여과조 내벽을 따라 일정간격으로 브레이드와 숭풍배관이 설치되고 상기 여과조로 공급되는 여재는 불연소성 및 난분해성이고 파쇄나 용탈되지 않는 물질이며 표면이 거칠고 경량인 무독성 물질인 것이 바람직하다.In addition, in the filtration tank, braids and wind pipes are installed at regular intervals along the inner wall of the filtration tank, and the filter medium supplied to the filtration tank is non-combustible and non-decomposable, does not crush or dissolve, and is preferably a non-toxic material with a rough surface and lightweight. .

또한, 상기 여과조는 밀폐구조이고 형태는 레미콘, 타원형, 직육면체형 중 어느 하나이고, 상기 여과조는 일측단부에 개폐 가능한 뚜껑이 설치되고 타측에는 스크린체와 개폐 가능한 밀폐뚜껑이 순차적으로 설치되는 것이 바람직하다.In addition, the filtration tank has a closed structure and is either ready-mixed concrete, elliptical, or rectangular in shape. It is preferable that the filtration tank has an openable lid installed on one end and a screen body and an openable closed lid sequentially installed on the other side. .

이하에서는, 본 발명에 따른 가축분뇨 방류수의 처리방법 및 그 처리방법으로 처리된 가축분뇨 방류수의 물성을 실시예를 들어 설명하기로 한다.Hereinafter, the method for treating livestock waste effluent according to the present invention and the physical properties of livestock waste effluent treated by the treatment method will be described by way of examples.

<제조예 1> 굴패각 분말의 제조<Preparation Example 1> Preparation of oyster shell powder

굴패각을 500 내지 1500℃의 온도로 5 내지 10시간 동안 소성한 후에 120 메시의 입자크기로 분쇄하여 굴패각 분말을 제조하였다.Oyster shell powder was prepared by calcining the oyster shells at a temperature of 500 to 1500°C for 5 to 10 hours and then grinding them to a particle size of 120 mesh.

<실시예 1><Example 1>

가축분뇨 처리장치에 구비된 저장조에 모아진 가축분뇨 방류수 100 중량부에 시간당 0.0003 내지 0.0007 중량부의 오존을 주입하고, 상기 가축분뇨 방류수 100 중량부 대비 염화제1철 0.0008 중량부를 혼하하여 방류수 내 우로빌린을 분해아여 제거하고, 우리빌린이 제거된 가축분뇨 방류수 100 중량부에 상기 제조예 1을 통해 제조된 굴패각 0.003 중량부를 혼합하고 150rpm의 속도로 30분 동안 교반하여 가축분뇨 방류수 내 유기물질을 흡착하여 제거하고, 유기물질이 제거된 가축분뇨 방류수를 침전조로 이송한 후에 12시간 동안 방류수 내 부유물질을 침지시킨 후에, 부유물질이 침전된 가축분뇨 방류수를 여과조에서 여과하는 과정으로 가축분뇨 방류수를 처리하였다.Ozone is injected at 0.0003 to 0.0007 parts by weight per hour into 100 parts by weight of livestock waste effluent collected in a storage tank provided in the livestock waste treatment device, and 0.0008 parts by weight of ferrous chloride is mixed with 100 parts by weight of livestock waste effluent to remove urobilin in the effluent. Decompose and remove, mix 0.003 parts by weight of oyster shell shell prepared through Preparation Example 1 with 100 parts by weight of livestock waste effluent from which uribilin has been removed, and stir for 30 minutes at a speed of 150 rpm to adsorb and remove organic substances in the livestock waste effluent. Then, the livestock waste effluent from which organic substances were removed was transferred to a sedimentation tank, the suspended solids in the effluent were immersed for 12 hours, and then the livestock waste effluent with the suspended solids precipitated was filtered in a filtration tank.

<비교예 1><Comparative Example 1>

가축분뇨 처리장치에 구비된 저장조에 모아진 가축분뇨 방류수를 침전조로 이송한 후에 12시간 동안 방류수 내 부유물질을 침지시킨 후에, 부유물질이 침전된 가축분뇨 방류수를 여과조에서 여과하는 과정으로 가축분뇨 방류수를 처리하였다.The livestock waste effluent collected in the storage tank provided in the livestock waste treatment device is transferred to the sedimentation tank, the suspended solids in the effluent are immersed for 12 hours, and then the livestock manure effluent with the suspended solids settled is filtered in a filtration tank. Processed.

상기 실시예 1 및 비교예 1을 통해 처리된 가축분뇨 방류수의 외관을 촬영하여 아래 도 2에 나타내었다.The appearance of the livestock waste effluent treated through Example 1 and Comparative Example 1 was photographed and shown in Figure 2 below.

아래 도 2에 나타낸 것처럼, 본 발명의 실시예 1을 통해 처리된 가축분뇨 방류수는 비교예 1을 통해 처리된 가축분뇨 방류수에 비해 색감(투명도)이 우수하며 부유물질이 눈에 띄가 감소한 것을 알 수 있다.As shown in Figure 2 below, the livestock manure effluent treated through Example 1 of the present invention has superior color (transparency) compared to the livestock manure effluent treated through Comparative Example 1, and suspended solids are noticeably reduced. You can.

따라서, 본 발명에 따른 가축분뇨 방류수의 처리방법은 가축분뇨 방류수의 색도를 낮추고 유기물질을 제거하여 하천이나 주변환경의 오염을 방지한다.Therefore, the method for treating livestock waste effluent according to the present invention reduces the color of livestock waste effluent and removes organic substances to prevent pollution of rivers and surrounding environments.

S101 ; 우로빌린분해단계
S103 ; 유기물질제거단계
S105 ; 침전물제거단계
S107 ; 여과단계S101 ; Urobiline decomposition stage
S103 ; Organic substance removal stage
S105 ; Sediment removal step
S107 ; filtration step

Claims (4)

가축분뇨 방류수에 오존을 주입하고 염화제1철을 혼합하는 방류수 내 우로빌린을 분해하는 우로빌린분해단계;
상기 우로빌린분해단계를 통해 우로빌린이 분해된 가축분뇨 방류수에 굴패각 분말을 투입하여 방류수 내 유기물질을 제거하는 유기물질제거단계;
상기 유기물질제거단계를 통해 유기물질이 제거된 가축분뇨 방류수를 침전조로 이송한 후에 방류수 내 부유물질을 침전시키는 침전물제거단계; 및
상기 침전물제거단계를 통해 침전물이 제거된 방류수를 여과조로 이송하여 여과하는 여과단계;로 이루어지는 것을 특징으로 하는 가축분뇨 방류수의 처리방법.
A urobilin decomposition step of injecting ozone into livestock waste effluent and mixing ferrous chloride to decompose urobilin in the effluent;
An organic matter removal step of removing organic substances in the effluent by adding oyster shell powder to the livestock waste effluent in which urobilin has been decomposed through the urobilin decomposition step;
A sediment removal step of transferring the livestock manure effluent from which organic materials have been removed through the organic material removal step to a sedimentation tank and then precipitating suspended solids in the effluent; and
A filtration step of transferring the effluent from which sediments have been removed through the sediment removal step to a filtration tank and filtering it.
 청구항 1에 있어서,
상기 우로빌린분해단계는 가축분뇨 방류수 100 중량부에 시간당 0.0003 내지 0.0007 중량부의 오존을 주입하면서,
상기 가축분뇨 방류수 100 중량부 대비 염화제1철 0.0005 내지 0.001 중량부를 혼합하여 이루어지는 것을 특징으로 하는 가축분뇨 방류수의 처리방법.
In claim 1,
The urobilin decomposition step involves injecting 0.0003 to 0.0007 parts by weight of ozone per hour into 100 parts by weight of livestock waste effluent,
A method of treating livestock waste effluent, characterized in that 0.0005 to 0.001 parts by weight of ferrous chloride is mixed with 100 parts by weight of the livestock waste effluent.
 청구항 1에 있어서,
상기 유기물질제거단계는 상기 우로빌린분해단계를 통해 우로빌린이 분해된 가축분뇨 방류수 100 중량부에 굴패각 분말 0.002 내지 0.004 중량부를 혼합하여 이루어지는 것을 특징으로 하는 가축분뇨 방류수의 처리방법.
In claim 1,
The organic matter removal step is a method of treating livestock waste effluent, characterized in that 0.002 to 0.004 parts by weight of oyster shell powder is mixed with 100 parts by weight of livestock waste effluent in which urobilin has been decomposed through the urobilin decomposition step.
 청구항 1 또는 3에 있어서,
상기 굴패각 분말은 500 내지 1500℃의 온도로 5 내지 10시간 동안 소성된 굴패각을 50 내지 200 메시의 입자크기로 분쇄하여 제조되는 것을 특징으로 하는 가축분뇨 방류수의 처리방법.In claim 1 or 3,
The oyster shell powder is a method of treating livestock waste effluent, characterized in that it is manufactured by grinding oyster shell shells calcined for 5 to 10 hours at a temperature of 500 to 1500 ° C. to a particle size of 50 to 200 mesh.
KR1020220153496A 2022-11-16 2022-11-16 Treatment method of livestock excretions waste water KR20240071701A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100493197B1 (en) 2003-03-19 2005-06-02 양사헌 The system treatment to cattle excertions
KR101932599B1 (en) 2016-12-29 2018-12-24 조명현 A Method for Removing Malodor and Making Liquid Fertilizer of Livestock Excretions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100493197B1 (en) 2003-03-19 2005-06-02 양사헌 The system treatment to cattle excertions
KR101932599B1 (en) 2016-12-29 2018-12-24 조명현 A Method for Removing Malodor and Making Liquid Fertilizer of Livestock Excretions

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