KR101185686B1 - Complex method of foodwaste using the pulpwastewater engineering - Google Patents
Complex method of foodwaste using the pulpwastewater engineering Download PDFInfo
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- KR101185686B1 KR101185686B1 KR1020120087118A KR20120087118A KR101185686B1 KR 101185686 B1 KR101185686 B1 KR 101185686B1 KR 1020120087118 A KR1020120087118 A KR 1020120087118A KR 20120087118 A KR20120087118 A KR 20120087118A KR 101185686 B1 KR101185686 B1 KR 101185686B1
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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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
- C02F11/00—Treatment of sludge; Devices therefor
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
본 발명은 유기성 폐기물인 음식물폐기물의 병합처리방법에 관한 것으로서, 특히, 지속적으로 사회적 문제를 야기하는 음식물폐기물을 제지폐수처리공정에 투입하여 음식물폐기물을 처리하는 기술에 관한 것이다. 보다 구체적으로, 본 발명은 음식물 폐기물에 혼합되어 있는 협잡물을 선별한 다음 2mm 이하의 크기로 파쇄하고, 파쇄된 음식물폐기물을 폐수처리과정의 침전조, 혼화조, 활성오니조, 농축조에 투입하여 호기성 미생물에 의해 분해되도록 하고, 미생물 분해로 생성되는 슬러지를 탈수하여 소각 또는 비료화 하는 것이다. 본 발명은 음식물폐기물을 제지폐수처리공정에 병합처리함으로서 기존의 무기성 제지폐수처리공정에 유기물을 자연스럽게 병합함으로서 처리방법에 대한 거부감이 없고, 경제적으로 처리할 수 있는 방법이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined treatment method of food waste, which is an organic waste, and more particularly, to a technology for treating food waste by injecting food waste continuously causing social problems into a paper wastewater treatment process. More specifically, the present invention selects the contaminants mixed in the food waste and then crushed to a size of 2mm or less, and put the crushed food waste into the sedimentation tank, mixing tank, activated sludge tank, concentration tank of the wastewater treatment process to aerobic microorganisms It is to be decomposed by, and the sludge produced by microbial decomposition is dehydrated to incinerate or fertilize. The present invention is a method that can be economically treated without rejection of the treatment method by naturally incorporating organic matter into the existing inorganic papermaking wastewater treatment process by merging food waste in the papermaking wastewater treatment process.
Description
본 발명은 유기성 폐기물인 음식물폐기물 처리분야에 관한 것으로서, 특히, 지속적으로 사회적 문제를 야기하는 음식물폐기물을 제지폐수처리공정에 적용한 병합처리방법에 관한 것이다. 보다 구체적으로, 본 발명은 음식물폐기물에 혼합되어 있는 협잡물을 선택분류한 후 2mm이하로 파쇄하고, 기름성분을 제거한 다음 제지폐수 처리공정에 투입하여 제지폐수와 병합하여 처리하는 것이며, 이 과정에서 단계별로 집수조, 혼화조, 침전조, 활성오니조, 농축조, 탈수 및 소각과정을 거쳐 음식물폐기물과 제지폐수처리공정을 병합하여 처리하는 방법에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of food waste, which is an organic waste, and more particularly, to a combined treatment method in which food waste that continuously causes social problems is applied to a paper wastewater treatment process. More specifically, the present invention is to selectively sort the contaminants mixed in the food waste and then crushed to less than 2mm, remove the oil component and then put into the paper wastewater treatment process to treat the paper wastewater and merge it, step by step in this process Furnace collection tank, mixing tank, sedimentation tank, activated sludge tank, thickening tank, dehydration and incineration process through the food waste and paper wastewater treatment process combined.
유기물질로 구성된 음식물폐기물은 그동안 해양투기, 퇴비화 및 사료화 방법으로 처리하였으며, 처리과정에서 건조 및 탈수를 통한 감량화 방법이 사용되었다. 기존 처리방법 중에서 해양투기는 2013년부터 국제적으로 전면 금지된다. 또한 음식물폐기물 처리방법 중 퇴비화 방법은 수요자의 거부감과 경작지에 염분이 축적될 수 있다는 염려 때문에 퇴비화가 기피되고 있다. 그리고 사료화는 이물질 제거 및 살균작업을 철저히 하여야 사용 가능하며, 반추동물에는 음식물폐기물로 만든 사료는 사용하지 못하도록 규정하고 있고, 가축의 전염병이 발생하지 않도록 철저한 관리가 필요한 실정이다.그리고 음식물폐기물로 만든 사료가 가금류 등의 가축에게 영양학적으로 좋은 먹이가 될 수 없음이 밝혀진 바 있다. 또한 건조나 탈수에 의한 감량화 방법은 중량을 감소시킬 수 있으나 건조과정에서 심한 악취가 발생하고 폐수가 발생하는 등의 문제점이 있다. 음식물폐기물에서 발생되는 폐수에는 기름성분과 질소, 인 등 유기물 함량이 높아 처리가 곤란하기 때문에 그동안 해양투기 방법이 주로 사용되었다. 질소와 인은 하천이나 호소, 바다 등에서 발생되는 부영양화의 원인 물질이기 때문에 2013년부터는 국제협약에 따라 음식물폐기물의 해양투기를 금지하기로 하였다. Food waste consisting of organic materials has been treated by ocean dumping, composting and feed method, and the reduction process through drying and dehydration was used. Among the existing treatment methods, dumping at sea has been banned internationally since 2013. In addition, composting among food waste treatment methods is being avoided due to consumer's rejection and fear that salt may accumulate in arable land. In addition, it is possible to use fodder only after thoroughly removing and sterilizing foreign substances, and ruminants are not allowed to use food waste made of ruminants, and thorough management is required to prevent the spread of livestock infectious diseases. It has been found that feed is not nutritionally good for livestock such as poultry. In addition, the weight reduction method by drying or dehydration may reduce the weight, but there are problems such as severe odors and waste water generated in the drying process. Wastewater generated from food wastes has a high content of oil, nitrogen, phosphorus and other organic matters, making it difficult to treat. Since nitrogen and phosphorus are the causes of eutrophication occurring in rivers, lakes and the sea, from 2013, the international agreement has banned the dumping of food wastes.
제지생산업체에서 발생되는 폐수를 처리하기 위해서는 미생물의 영양원인 질소와 인 등 인위적으로 투입하여 주어야 하는 문제점이 있다. 제지폐수를 처리하기 위하여 질소와 인을 인위적으로 혼합하는 경우 비용이 과다하게 소요되는 문제점이 있다. In order to treat the wastewater generated in the paper manufacturing company, there is a problem that artificially input such as nitrogen and phosphorus, which are the nutrient sources of microorganisms. When artificially mixing nitrogen and phosphorus in order to treat papermaking wastewater, there is a problem that excessive cost is required.
본 발명은 2013년 이후 해양투기가 금지된 음식물폐기물의 육상처리 방안을 모색하면서 동시에 제지폐수처리공정에서 발생되는 폐수를 용이하게 처리하기 위함이다.
The present invention is intended to facilitate the treatment of wastewater generated in the papermaking wastewater treatment process while at the same time seeking a land treatment method of food waste forbidden by ocean dumping since 2013.
본 발명의 목적은 음식물폐기물을 제지폐수처리공정에 병합처리할 수 있는 방법을 제공하기 위한 것이다.An object of the present invention is to provide a method that can be combined with food waste in the paper wastewater treatment process.
이와 같은 목적을 달성하기 위하여 음식물폐기물에 들어있는 이물질 또는 협잡물 등을 제거한 다음 음식물폐기물을 고르게 파쇄하고 유분을 제거하고 제지폐수에 투입한다. 상기 음식물폐기물이 제지폐수에 혼입하게 되면 상기 음식물폐기물은 제지폐수에 들어 있는 미생물의 영양원으로 기능하게 하는 것이다. 상기의 선별 및 파쇄, 유분제거 등 전처리 과정을 거친 음식물폐기물은 제지폐수처리공정의 제지폐수에 혼합되어 호기성 상태에서 소화되어 분해된다.To achieve this purpose, remove foreign substances or contaminants in food waste, and then crush food waste evenly, remove oil and put it in paper waste. When the food waste is incorporated into the paper waste, the food waste is to function as a nutrient source of microorganisms contained in the paper waste. Food wastes that have undergone the pretreatment process such as sorting, crushing, and oil removal are mixed with paper wastewater in the papermaking wastewater treatment process and digested and decomposed in an aerobic state.
본 발명의 2차적 목적은 음식물폐기물의 악취발생을 저감하고, 해양투기, 퇴비화 및 사료화 방법으로 처리되는 양을 최소화시킬 수 있는 방법을 제공하기 위한 것이다.It is a second object of the present invention to provide a method capable of reducing the occurrence of odor of food waste and minimizing the amount treated by ocean dumping, composting and feeding methods.
본 발명의 또 다른 목적은 유기물 함량이 적은 무기성 제지폐수 처리과정에 음식물폐기물을 제공함으로써 비용을 절감하고, 퇴비화가 용이한 유기성 슬러지의 생산을 유도함으로써 유용한 자원을 생산하기 위한 것이다.
Another object of the present invention is to produce a useful resource by providing a food waste in the inorganic papermaking waste water treatment process with a low organic content, inducing the production of organic sludge that is easy to compost.
본 발명은 음식물폐기물을 제지폐수에 혼합하여 병합처리하는 것으로 먼저 음식물폐기물에 들어 있는 동물뼈, 비닐, 쇳조각 등과 같은 이물질을 분리선별하고, 선별된 음식물폐기물의 평균 입경이 2mm 이하가 되도록 파쇄한 다음 유분을 제거하고 제지폐수처리공정에 투입한다. 이때 음식물폐기물 뿐만 아니라 음식물폐기물에서 누출된 음식물 폐수도 함께 처리한다. 상기 전처리된 음식물폐기물 및 음식물 폐수를 제지폐수처리공정에 투입하면 집수조, 혼화조, 침전조, 활성오니조, 농축조 및 방류조를 거치면서 호기성 미생물의 먹이로 사용된다. 상기 음식물폐기물을 파쇄하는 것은 제지폐수처리공정에서 미생물에 의해 쉽게 분해할 수 있도록 하기 위한 것이다. In the present invention, the food waste is mixed with paper waste, and then mixed and processed. First, the foreign matter such as animal bone, vinyl, and scraps contained in the food waste is separated and crushed so that the average particle diameter of the selected food waste is 2 mm or less. The oil is removed and put into paper wastewater treatment. At this time, not only food waste but also food wastewater leaking from food waste is treated. When the pretreated food waste and food wastewater are put into the paper wastewater treatment process, it is used as a food for aerobic microorganisms while going through a collection tank, a mixing tank, a precipitation tank, an active sludge tank, a concentration tank, and a discharge tank. The shredding of the food waste is intended to be easily decomposed by the microorganisms in the papermaking wastewater treatment process.
이와 같이 제지폐수에 혼입된 음식물폐기물은 제지폐수에 들어 있는 미생물의 영양원이 되어 슬러지로 변화되고, 이렇게 발생된 슬러지를 탈수하여 소각하거나 비료로 사용할 수 있도록 하는 것이다.
In this way, the food waste mixed in the papermaking wastewater becomes a nutrient source of the microorganisms contained in the papermaking wastewater, and is converted into sludge.
이상에서와 같이 본 발명은 음식물폐기물을 제지폐수처리공정에서 호기성,혐기성,임의성 미생물로 하여금 소화시킴으로써 음식물폐기물을 효율적으로 처리할 수 있으며, 특히 기존의 제지폐수처리시설의 설비를 이용할 경우 음식물폐기물을 선별 및 파쇄하여 투입함으로써 간단하게 적용할 수 있다. 또한 종래 제지폐수처리공정에서 미생물의 영양성분을 인위적으로 공급해주어야 하는 문제점을 음식물폐기물을 간단하게 공급함으로써 해결할 수 있으며, 동시에 음식물폐기물 처리문제도 해결되는 것이다. As described above, the present invention can efficiently treat food waste by extinguishing food waste by aerobic, anaerobic and random microorganisms in paper wastewater treatment process, and in particular, when using the facilities of existing paper wastewater treatment facilities, It can be applied simply by sorting and crushing. In addition, it is possible to solve the problem of artificially supplying nutrients of microorganisms in the conventional papermaking wastewater treatment process by simply supplying food waste, and at the same time, the problem of food waste treatment.
그리고 제지폐수에 음식물폐기물을 혼합하여 처리할 때 음식물폐기물로부터 공급되는 유기물질이 대부분 분해되므로 생산되는 슬러지의 양은 제지폐수를 단독 처리할 때와 큰 차이가 없다.When the food waste is mixed with paper waste, the organic material supplied from the food waste is mostly decomposed, so the amount of sludge produced is not significantly different from that of paper waste alone.
본 발명의 단순한 변형 또는 변경은 이 분야의 통상의 지식을 가진 자에 의하여 필요에 의해 가능하며, 이러한 변형이나 변경은 모두 본 발명의 영역에 포함되는 것으로 볼 수 있다.
Simple modifications or variations of the present invention can be made as needed by those skilled in the art, and all such modifications or changes can be regarded as being included in the scope of the present invention.
도 1은 본 발명의 음식물폐기물을 이용한 제지폐수의 병합처리방법을 개략적으로 도시한 단계흐름도이다.
Figure 1 is a flow chart schematically showing a method of merged paper wastewater treatment using food waste of the present invention.
본 발명은 음식물폐기물을 제지폐수처리과정에 투입하기 전에 음식물폐기물에 혼합되어 있는 불순물을 선별하고, 선별된 음식물폐기물을 균일하게 파쇄한 다음 유분을 제거한다. 상기 음식물폐기물에서 별도 분리된 음식물폐수에 들어 있는 유분도 제거한다. 상기 음식물폐기물에는 고형분의 함량이 1~15중량% 바람직하게는 10중량% 정도가 함유되며, 상기 고형분의 함량이 들어있는 음식물폐기물을 제지폐수에 혼합시킨다. The present invention sorts the impurities mixed in the food waste before inputting the food waste into the paper wastewater treatment process, uniformly crushes the selected food waste, and then removes the oil. The oil contained in the food wastewater separated from the food waste is also removed. The food waste contains 1 to 15% by weight, preferably about 10% by weight, of solid content, and the food waste containing the solid content is mixed with papermaking wastewater.
상기 제지폐수에 혼합된 음식물폐기물은 미생물에 의해 호기성 소화되며, 소화 후 탈수하여 슬러지를 케이크로 제조하고 이를 소각 또는 비료화 한다. The food waste mixed in the papermaking wastewater is aerobic digested by the microorganisms, and dehydrated after digestion to prepare sludge as a cake and incinerate or fertilize it.
1. 음식풀폐기물의 선별과정1. Selection Process of Food Waste
제지폐수처리공정에 음식물폐기물을 투입하기 전에 음식물폐기물에 들어 있는 동물뼈, 비닐, 쇳조각 및 기타 이물질을 분리선별하는 과정이다. 음식물폐기물에 들어 있는 이와 같은 이물질을 제거하지 않으면 제지폐수의 미생물 소화율이 저하되며, 최종적으로 생산되는 슬러지의 양도 많아지고 또한 생산된 슬러지의 유용성이 저하된다. It is the process of separating and sorting animal bones, vinyl, scraps and other foreign substances in food wastes before adding them to the paper wastewater treatment process. Failure to remove these foreign substances in food waste will reduce the microbial digestibility of the papermaking wastewater, increase the amount of sludge produced in the end, and reduce the usefulness of the produced sludge.
2. 음식물폐기물의 파쇄과정2. Shredding process of food waste
음식물폐기물은 제지폐수에 혼합되어 신속하게 소화되도록 균일한 크기로 파쇄시켜야 한다. 음식물폐기물을 파쇄할 때 음식물폐기물 자체에 함유된 수분을 제거하지 않은 상태에서 파쇄시킨다. 음식물폐기물을 파쇄시키는 파쇄기는 안전망과 같은 안전장치가 구비된 회전톱날로 구성되어 있으며, 이러한 파쇄기에 상기 선별된 음식물폐기물을 투입하여 파쇄한다. 음식물폐기물을 파쇄할 때에는 입자의 크기가 2mm 이하로 파쇄하며, 바람직하게는 0.5~2mm의 크기로 파쇄하여 활성오니조 등에서 미생물이 쉽게 섭취 분해되도록 한다.Food waste should be shredded to a uniform size so that it is mixed with paper waste and quickly extinguished. When crushing food waste, it is crushed without removing the moisture contained in the food waste itself. The shredder for shredding food waste is composed of a rotary saw blade equipped with a safety device such as a safety net, and the selected food waste is shredded into the shredder. When shredding food waste, the particle size is shredded to 2 mm or less, and preferably shredded to a size of 0.5 to 2 mm so that microorganisms are easily ingested and degraded in activated sludge.
3. 음식물폐기물의 유분 제거과정3. Oil removal process of food waste
상기 공정에서 파쇄된 음식물폐기물은 고형물과 수분이 혼합된 상태로 되며, 파쇄된 음식물폐기물은 가열이 가능한 저장탱크에 보관한다. 보관할 때에는 30~80℃의 온도로 가열하며, 가열할 때 상층부에 떠있는 유분은 제거한다. 저장탱크 안에는 음식물폐기물이 충분히 혼합 될 수 있도록 스크류 시설을 하고, 하단부에 기포를 발생시켜 유분의 제거율을 높일 수 있다. 유분이 제거되지 아니한 상태에서 제지폐수에 음식물폐기물을 투입하게 되는 경우 각 처리조의 상층부에 얇은 기름막이 형성되어 대기 중의 산소가 공급되는 것을 막아 호기성 미생물의 활성을 저해한다.The food waste shredded in the above process is a mixture of solids and moisture, and the shredded food waste is stored in a heat storage tank. When storing, heat it to a temperature of 30 ~ 80 ℃, and remove the oil floating on the upper layer when heating. The storage tank is equipped with a screw facility to fully mix the food waste, and bubbles can be generated at the bottom to increase the oil removal rate. When food waste is introduced into the papermaking wastewater without oil removal, a thin oil film is formed at the upper layer of each treatment tank to prevent oxygen from being supplied to the air, thereby inhibiting the activity of aerobic microorganisms.
4. 폐수처리에 투입되는 음식물폐기물 4. Food waste put into wastewater treatment
상기 선별되고 파쇄시킨 음식물폐기물은 제지폐수 처리과정 중 폭기조, 활성오니조, 침전조, 농축조 등에 투입되어 미생물의 먹이로 공급되며, 제지폐수의 미생물은 음식물폐기물을 먹이로 하여 음식물폐기물을 처리하는 동시에 제지폐수의 각종 물질을 포집하여 제지폐수를 정화시킨다. 이와 같이 음식물폐기물을 먹고 자란 제지폐수의 미생물은 최종 단계에서 유기성 슬러지로 남게 된다. 제지폐수에 혼합되는 음식물폐기물의 고형물 함량은 1~15 중량% 바람직하게는 10중량% 정도가 함유되며, 상기 음식물폐기물은 활성 오니조 등에서 미생물의 먹이가 된다.The sorted and crushed food waste is fed into the aeration tank, activated sludge tank, sedimentation tank, concentrate tank, etc. during the paper waste water treatment process, and is supplied as food for microorganisms. Various materials in the wastewater are collected to purify paper wastewater. In this way, the microorganisms of the paper wastewater grown by eating food waste remain as organic sludge in the final stage. The solids content of the food waste mixed in the papermaking wastewater is contained in an amount of 1 to 15% by weight, preferably about 10% by weight, and the food waste is fed to microorganisms in activated sludge.
5. 호기성 미생물의 종류5. Types of Aerobic Microorganisms
현재 음식물폐기물을 영양원으로 사용하는 미생물로는 코리네형(coryneform), 노카디오형(nocardioform), 진정 섬유상 세균(true filamentous bacteria), 방선균류(actinomycetes)와 같은 것이 있다. 그 외에 바실러스속(Bacilus)의 바실러스 스미스아이, 바실러스 lflcpsivhfmaltm, Breviacillus속의 brevibacillus borafelensis 및 Kazachafania 속의 Kazachafania felluris 등이 있다. 그 외에 Voriticella속의 microstoma, convallaria, alba, Rotaria속, Epistylis속의 plicatilis, elongata, cambari, Podophrya속의 denticulata, halophila, Aspidisca속의 costata, lynceus, Colurella속의 obtusa, adriatica, Tokoprya속의 quadripartita, conica, oviforme, Zoothamnium속의 pygmaeum, mucedo, Opercularia속의 coarctata,minima, Carchesium속 등이 있다. Microorganisms that currently use food waste as a nutrient source include coryneforms, nocardioforms, true filamentous bacteria, and actinomycetes. Others include Bacillus Smith Eye of Bacillus, Bacillus lflcpsivhfmaltm, brevibacillus borafelensis of Breviacillus, and Kazachafania felluris of Kazachafania. In addition, microstoma, convallaria, alba, Rotaria in Voriticella, plicatilis, elongata in Epistylis, cambari, denticulata in Podophrya, halophila, costata in Aspidisca, lynceus, obtusa, adriatica, Tokopry, con, and quadripartic , mucedo, coarctata of the genus Opercularia, minima, and the genus Carchesium.
6. 제지폐수처리공정의 폭기조6. Aeration Tank in Paper Wastewater Treatment Process
제지생산 과정에서 발생되는 폐수는 유기물 함량이 낮은 무기성 폐수가 발생된다. 이러한 무기성 폐수를 호기성 미생물을 이용하여 처리하기 위해서는 미생물의 활성을 촉진시켜 주기 위하여 부족한 영양원을 인위적으로 공급하여야 한다. 그러나 제지폐수를 영양원을 인위적으로 공급하여 처리하기에는 많은 비용이 발생되는 문제점이 있다. Wastewater from papermaking is produced from inorganic wastewater with low organic content. In order to treat such inorganic wastewater using aerobic microorganisms, it is necessary to artificially supply scarce nutrients to promote microbial activity. However, there is a problem that a lot of costs are generated to treat paper wastewater by artificially supplying nutrients.
이와 같은 제지폐수에 영양원으로 음식물폐기물을 투입하여 제지폐수를 처리하게 되면 제지폐수를 정화하면서 음식물폐기물까지 처리할 수 있는 장점이 있다. 무기성 제지폐수에 미생물의 먹이로 음식물폐기물이 투입하게 되면 미생물은 폭기조 등에서 공급된 산소를 이용하여 음식물폐기물을 영양원으로 이용하면서 제지폐수를 정화시키게 된다.If food waste is treated by adding food waste as a nutrient source to such paper waste, there is an advantage in that it can treat food waste while purifying paper waste. When food waste is introduced into the inorganic paper waste water as the food of the microorganisms, the microorganisms purify the paper waste water by using the food waste as a nutrient source using oxygen supplied from the aeration tank.
7. 슬러지의 탈수 및 소각7. Dewatering and Incineration of Sludge
폭기조에서 충분히 공급된 산소와 투입된 음식물폐기물을 영양원으로 왕성하게 증식된 미생물은 침전조 및 농축조의 과정을 거치면서 유기물을 소진시키고 슬러지로 배출된다. The microorganisms, which have abundantly supplied oxygen from the aeration tank and the food wastes injected into the nutrient source, are used to exhaust organic matter and are discharged as sludge through the process of sedimentation tank and concentration tank.
배출된 슬러지는 대부분 미생물 사체로 구성되어 있으며, 미생물의 세포막 안에 수분이 들어 있어 탈수가 용이하지 않다. 스크류 또는 원심력 등을 이용하여 슬러지를 탈수시킨 다음 양질의 슬러지케이크는 비료 등으로 사용되고, 그렇지 않은 탈수 슬러지는 소각 등의 방법으로 처리한다.
The discharged sludge is mostly composed of microbial carcasses, and moisture is contained in the cell membranes of the microorganisms so that dehydration is not easy. The sludge is dewatered using a screw or centrifugal force, and then a good sludge cake is used as a fertilizer, and the dewatered sludge is not treated by incineration.
Claims (2)
상기 음식물폐기물에 들어 있는 동물뼈, 비닐, 쇳조각 및 기타 이물질을 분리선별하는 단계; 및
상기 선별된 음식물폐기물을 미생물에 의한 분해속도를 촉진시키기 위하여 그 입경이 0.5~2mm의 크기로 파쇄하는 단계; 및
상기 파쇄된 음식물폐기물을 30~80℃의 온도로 가열하는 가열하여 음식물폐기물에 함유된 유분을 제거하는 단계; 및
상기 파쇄 및 유분이 제거된 음식물폐기물에 고형물 함량이 1~15 중량% 함유된 음식물폐기물을 제지폐수에 투입하는 단계; 및
상기 투입된 음식물폐기물이 제지폐수의 미생물에 의해 호기성 조건에서 분해되고 슬러지로 변화하는 단계;
상기 슬러지를 농축시키고, 탈수하여 소각 또는 비료화 하는 단계;로 구성되는 것을 특징으로 하는 음식물폐기물을 이용한 제지폐수의 병합처리방법.
In the combined treatment method of paper wastewater using food waste,
Separating and sorting animal bones, vinyl, scraps and other foreign matter contained in the food waste; And
Crushing the selected food waste to a size of 0.5 to 2 mm in order to promote the decomposition rate by the microorganism; And
Heating the crushed food waste to a temperature of 30 to 80 ° C. to remove oil contained in the food waste; And
Adding food waste containing 1 to 15% by weight of solids to the food waste from which the shreds and oils have been removed, into paper waste; And
The input food waste is decomposed under aerobic conditions by the microorganisms of the papermaking wastewater and changed to sludge;
Concentrating the sludge, and dehydration by incineration or fertilization; Paper wastewater combined treatment method using a food waste, characterized in that consisting of.
상기 호기성 미생물은 Bacilus속, Breviacillus속, Kazachafania 속, Voriticella속, Rotaria속, Epistylis속, Podophrya속 및 Aspidisca속의 costata, lynceus와 Colurella속, Tokoprya속, Zoothamnium속, Opercularia속 또는 Carchesium속 미생물인 것을 특징으로 하는 음식물폐기물을 이용한 제지폐수의 병합처리방법.
The method of claim 1,
The aerobic microorganisms are genus Bacilus, Breviacillus, Kazachafania, Voriticella, Rotaria, Epistylis, Podophrya and Aspidisca, costata, lynceus and Colurella, Tokoprya, Zoothamnium, Opercularia or Carchesium. Combined treatment method of paper wastewater using food waste.
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| KR101312809B1 (en) | 2013-05-02 | 2013-09-27 | 김태민 | Complex method of foodwaste leachate using the pulpwastewater engineering |
| CN111718085A (en) * | 2020-06-11 | 2020-09-29 | 中石大蓝天(青岛)石油技术有限公司 | Solid waste treatment method |
| CN112679028A (en) * | 2021-03-17 | 2021-04-20 | 广东预防医学健康研究院(有限合伙) | Medical waste liquid collecting and separating treatment device |
| CN114807251A (en) * | 2022-05-08 | 2022-07-29 | 北京工业大学 | Method for strengthening acid production by co-digestion of kitchen waste and activated sludge through freezing/temperature pretreatment |
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| KR101312809B1 (en) | 2013-05-02 | 2013-09-27 | 김태민 | Complex method of foodwaste leachate using the pulpwastewater engineering |
| CN111718085A (en) * | 2020-06-11 | 2020-09-29 | 中石大蓝天(青岛)石油技术有限公司 | Solid waste treatment method |
| CN112679028A (en) * | 2021-03-17 | 2021-04-20 | 广东预防医学健康研究院(有限合伙) | Medical waste liquid collecting and separating treatment device |
| CN112679028B (en) * | 2021-03-17 | 2021-05-25 | 广东预防医学健康研究院(有限合伙) | Medical waste liquid collecting and separating treatment device |
| CN114807251A (en) * | 2022-05-08 | 2022-07-29 | 北京工业大学 | Method for strengthening acid production by co-digestion of kitchen waste and activated sludge through freezing/temperature pretreatment |
| CN116020838A (en) * | 2023-02-10 | 2023-04-28 | 山东龙泰畜牧机械有限公司 | Kitchen waste pretreatment process based on hydraulic vortex separation pulping machine |
| CN116213428A (en) * | 2023-03-27 | 2023-06-06 | 浙江飞普达环保科技有限公司 | Multi-shaft hydraulic crushing fluffer and method for meal waste based on Internet of things |
| CN116213428B (en) * | 2023-03-27 | 2023-09-29 | 浙江飞普达环保科技有限公司 | Multi-shaft hydraulic crushing fluffer and method for meal waste based on Internet of things |
| CN117486439A (en) * | 2024-01-03 | 2024-02-02 | 北京哈泰克工程技术有限公司 | Papermaking wastewater treatment method with low sludge yield |
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