JP5550780B2 - Primary treatment method in household septic tank - Google Patents
Primary treatment method in household septic tank Download PDFInfo
- Publication number
- JP5550780B2 JP5550780B2 JP2013502068A JP2013502068A JP5550780B2 JP 5550780 B2 JP5550780 B2 JP 5550780B2 JP 2013502068 A JP2013502068 A JP 2013502068A JP 2013502068 A JP2013502068 A JP 2013502068A JP 5550780 B2 JP5550780 B2 JP 5550780B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- tank
- septic tank
- facultative anaerobic
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Treatment Of Sludge (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Activated Sludge Processes (AREA)
Description
本発明は、家庭用浄化槽に流入する有機性排水を、浸漬型透明円筒を介して、前記家庭用浄化槽内部に光を照射しながら、通性嫌気を常時維持する条件下の単一槽において、一次処理を行う水処理方法に関する。 The present invention is a single tank under the condition of constantly maintaining facultative anaerobic while irradiating the organic wastewater flowing into the domestic septic tank through the immersion type transparent cylinder with light inside the domestic septic tank. The present invention relates to a water treatment method for performing a primary treatment.
従来から知られている水処理装置として、例えば、特開２００３−２０５２９７号公報に開示された排水処理装置がある。この排水処理装置は、処理槽の下部に設けた絶対嫌気状態の第一ろ床部と、その第一ろ床部の上部に設けた無酸素状態の第二ろ床部と、その第二ろ床部の上部に設けた好気状態の第三ろ床部とを備えている。また、第一ろ床部の下方には原水流入部が設けられており、また、処理槽の底部には汚泥濃縮部および沈殿汚泥抜取部が設けられている。また、第三ろ床部の上方には処理水排出部が設けられ、第三ろ床部の下方には散気手段が設けられている。この排水処理装置では、第三ろ床部の上方の処理水の一部を抜き出して、硝化液循環経路によって、第二ろ床部の下方に流入させる。
しかしながら、従来の技術では家庭用浄化槽において、一次処理は嫌気分解を主としていることから、以下のような問題が存在する。すなわち、
（１）嫌気主体であるが故に、スカムが発生し、悪臭がする。
（２）嫌気主体であるため、有機物除去率が低く、次工程の好気処理に負荷がかかってしまう。また、好気処理に負荷がかかるため、高度処理水が得られにくい。
（３）嫌気主体であるため、有機物分解速度が遅い。有機物分解速度が遅いため、流入有機物が処理槽内に堆積しやすい。このため、処理槽内に有機物が堆積すると定期的に汚泥引き抜き作業が必要となる。However, in the conventional technology, in the domestic septic tank, since the primary treatment mainly involves anaerobic decomposition, the following problems exist. That is,
(1) Since it is an anaerobic subject, scum is generated and a bad odor is generated.
(2) Since it is mainly anaerobic, the organic matter removal rate is low, and a load is imposed on the aerobic treatment in the next step. Moreover, since an aerobic process is loaded, highly treated water is hard to be obtained.
(3) Since it is mainly anaerobic, the organic matter decomposition rate is slow. Since the organic matter decomposition rate is slow, the inflowing organic matter tends to accumulate in the treatment tank. For this reason, when organic substance accumulates in a processing tank, sludge extraction work will be needed regularly.
また、引抜き余剰汚泥は、処理場に搬入されたのち、再処理され、焼却、あるいは埋め立てられる。また、引抜き余剰汚泥の一部は堆肥化される。いずれの処理にも多大なエネルギーとコストが掛けられている。 Further, the extracted surplus sludge is reprocessed after being brought into the treatment plant, and is incinerated or landfilled. Part of the extracted excess sludge is composted. Both processes are enormous in energy and cost.
本発明は、このような事情に鑑みてなされたものであり、スカムおよび悪臭の発生、および一次処理槽内における流入有機物の堆積を抑制するとともに、有機物分解速度および有機物除去率を高め、高度処理水を得ながら、かつ、生成汚泥を直接土壌還元することができる汚泥に変成する家庭用浄化槽における一次処理方法を提供することを目的とする。 The present invention has been made in view of such circumstances, and suppresses the generation of scum and bad odor, and the accumulation of inflowing organic matter in the primary treatment tank, enhances the organic matter decomposition rate and the organic matter removal rate, and performs advanced treatment. An object of the present invention is to provide a primary treatment method in a domestic septic tank that converts water into sludge that can directly reduce the generated sludge while obtaining water.
（１）上記の目的を達成するために、本発明は、以下のような手段を講じた。すなわち、本発明の水処理方法は、浸漬型透明円筒を介して、家庭用浄化槽内部に光を照射させ、通性嫌気条件下で一次処理を行なう水処理方法であって、単一の処理槽内に汚水を流入させる工程と、通性嫌気性微生物資材を前記処理槽に投入する工程と、前記処理槽内を連続的または間欠的に攪拌する工程と、を少なくとも含むことを特徴としている。 (1) In order to achieve the above object, the present invention takes the following measures. That is, the water treatment method of the present invention is a water treatment method for irradiating light inside a domestic septic tank through a submerged transparent cylinder and performing primary treatment under facultative anaerobic conditions. It includes at least a step of allowing sewage to flow in, a step of introducing facultative anaerobic microorganism material into the treatment tank, and a step of stirring the treatment tank continuously or intermittently.
このように、単一の処理槽内に汚水を流入させ、通性嫌気性微生物資材を処理槽に投入し、処理槽内を連続的または間欠的に攪拌する。汚泥を他槽へ移流させない仕組みを持つ単一の処理槽内は、通性嫌気性微生物が活動しやすい微好気の環境を常時保つことが可能となる。その結果、嫌気主体のように、スカムおよび悪臭が発生することがなくなる。また、通性嫌気性であるため、嫌気主体よりも有機物分解速度が速く、且つ汚泥が堆積しにくい。このため、嫌気主体よりも有機物除去率が高く、高度処理水を得ることが可能となる。さらに、浸漬型透明円筒を介して、家庭用浄化槽内部に光を照射させて生成された汚泥は、余剰汚泥として水処理系外に搬出された際、光源の元で静置をすると光合成細菌群が活性化し、１〜２週間で赤色化してくる性質を持つ汚泥に変成されることが可能となる。 In this way, sewage is allowed to flow into a single treatment tank, a facultative anaerobic microorganism material is introduced into the treatment tank, and the inside of the treatment tank is continuously or intermittently stirred. In a single treatment tank having a mechanism that does not allow the sludge to be transferred to other tanks, it is possible to always maintain a microaerobic environment in which facultative anaerobic microorganisms are easily active. As a result, scum and odor are not generated unlike an anaerobic subject. Moreover, since it is facultative anaerobic, organic matter decomposition | disassembly rate is quicker than an anaerobic main body, and sludge does not accumulate easily. For this reason, the organic matter removal rate is higher than that of the anaerobic main body, and highly treated water can be obtained. Furthermore, the sludge produced by irradiating light inside the domestic septic tank through the immersion type transparent cylinder is taken out of the water treatment system as surplus sludge, and if left under a light source, the photosynthetic bacteria group Becomes activated and can be transformed into sludge having the property of turning red in 1 to 2 weeks.
また、本発明の水処理方法において、前記通性嫌気性微生物資材は、乳酸菌、酵母菌、糸状菌、放線菌の少なくとも２つを含む通性嫌気性の微生物を複合した粉状、固形または液状の資材である。本発明では、この通性嫌気性微生物資材を、家庭用浄化槽に、年１回投入することを特徴としている。 In the water treatment method of the present invention, the facultative anaerobic microbial material is a powder, solid or liquid compounded with facultative anaerobic microorganisms including at least two of lactic acid bacteria, yeasts, filamentous fungi, and actinomycetes. It is material of. In the present invention, this facultative anaerobic microbial material is introduced into a domestic septic tank once a year.
この構成により、嫌気主体ではなく、浸漬型透明円筒を介して、家庭用浄化槽内部に光を照射させて、通性嫌気条件下で水処理を行なう。光照射の下で生成された汚泥は、余剰汚泥として水処理系外に搬出された際、光源の元で静置をすると光合成細菌群が活性化し、１〜２週間で赤色化してくる性質を持つ汚泥に変成されることが可能となる。 With this configuration, water treatment is performed under facultative anaerobic conditions by irradiating light inside the domestic septic tank through an immersion type transparent cylinder, not an anaerobic main body. When the sludge generated under light irradiation is transported out of the water treatment system as surplus sludge, the photosynthetic bacteria group is activated when left standing under a light source and turns red in 1 to 2 weeks. It can be transformed into sludge.
また、本発明の水処理方法において、前記処理槽は、汚水および通性嫌気性微生物資材を攪拌する攪拌槽と、前記攪拌後に固体と液体とを分離する沈降槽とから構成されており、前記沈降槽で分離された固体を、重力を介して前記攪拌槽に戻すことで、生成汚泥を他槽へ移流させない仕組みであることを特徴としている。 Further, in the water treatment method of the present invention, the treatment tank is composed of a stirring tank for stirring sewage and facultative anaerobic microorganism material, and a sedimentation tank for separating solid and liquid after the stirring, The solid separated in the sedimentation tank is returned to the agitation tank through gravity so that the generated sludge is not transferred to another tank.
このように、攪拌槽において、曝気ではなく攪拌を行なうので、攪拌槽内を微好気の環境に保つことが可能となる。また、沈降槽で分離された固体を、重力を介して攪拌槽に戻すので、攪拌槽に戻った菌体によって攪拌槽内の菌密度が流入する有機物よりも高くなり、有機物の分解を速めることが可能となる。その結果、嫌気主体よりも有機物除去率が高く、高度処理水を得ることが可能となる。さらに、嫌気主体のように、スカムおよび悪臭が発生することがなくなる。また、単一槽での菌密度の高さおよび他槽へ汚泥を移流させない環境下では、その処理環境に変動を与えないことから、通性嫌気性条件を常時維持することになる。このため、浸漬型透明円筒を介した光照射の下で生成された汚泥は、余剰汚泥として水処理系外に搬出された際、光源の元で静置をすると光合成細菌群が活性化し、１〜２週間で赤色化してくる性質を持つ汚泥に変成されることを可能とする。 Thus, since stirring is performed in the stirring tank instead of aeration, the inside of the stirring tank can be maintained in a slightly aerobic environment. In addition, since the solid separated in the sedimentation tank is returned to the stirring tank via gravity, the bacterial density in the stirring tank becomes higher than the organic matter flowing into the stirring tank due to the cells returned to the stirring tank, and the decomposition of the organic matter is accelerated. Is possible. As a result, the organic matter removal rate is higher than that of the anaerobic main body, and highly treated water can be obtained. Further, scum and odor are not generated unlike an anaerobic subject. Moreover, in the environment where the bacterial density is high in a single tank and in an environment where sludge is not transferred to another tank, the treatment environment is not changed, so the facultative anaerobic condition is always maintained. For this reason, when the sludge generated under light irradiation through the submerged transparent cylinder is carried out of the water treatment system as surplus sludge, the photosynthetic bacteria group is activated when left standing under the light source. It can be transformed into sludge with the property of turning red in 2 weeks.
（２）また、本発明の水処理方法において生成された汚泥は、余剰汚泥として水処理系外に搬出された際、光源の元で静置をすると光合成細菌群が活性化し、赤色化してくる。光合成細菌群が優先化し赤色化した汚泥は腐敗菌を抑制する為、水処理系外に搬出されても、作物生育に障害を与えず、オンサイトで土壌還元ができることを特徴としている。 (2) Moreover, when the sludge generated in the water treatment method of the present invention is carried out of the water treatment system as surplus sludge, the photosynthetic bacteria group is activated and becomes red when left standing under a light source. . The sludge reddened by the photosynthetic bacteria group is characterized by the ability to reduce soil on-site without damaging crop growth even if it is carried out of the water treatment system in order to suppress spoilage bacteria.
本発明によれば、一次処理槽内を、通性嫌気性微生物が活動しやすい微好気の環境に常時保つことが可能となる。その結果、嫌気主体のように、スカムおよび悪臭が発生することがなくなる。また、通性嫌気性であるため、嫌気主体よりも有機物分解速度が速いことから、有機物除去率が高く、高度処理水を得ることが可能となる。さらに、浸漬型透明円筒を介した光照射の下で生成された汚泥は、余剰汚泥として水処理系外に搬出された際、光源の元で静置をすると光合成細菌群が活性化し、１〜２週間で赤色化してくる性質を持つ汚泥に変成される。光合成細菌群が優先化し赤色化した汚泥は腐敗菌を抑制する為、水処理系外に搬出されても、作物生育に障害を与えず、オンサイトで土壌還元ができる。その結果、余剰汚泥処理費が削減できる。なお、水処理過程において、赤色化する性質を持つ汚泥に変成されたか否かの確認は、試料汚泥を透明瓶に汲み、光源の元で３〜７日静置すると、表層に赤とピンクの二重層が出現することで確認できる。 ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to always maintain the inside of a primary treatment tank in the microaerobic environment where facultative anaerobic microorganisms are easy to act. As a result, scum and odor are not generated unlike an anaerobic subject. Moreover, since it is facultative anaerobic, the organic matter decomposition rate is faster than that of the anaerobic main body, so the organic matter removal rate is high, and it becomes possible to obtain highly treated water. Furthermore, when the sludge generated under light irradiation through the immersion type transparent cylinder is carried out of the water treatment system as surplus sludge, the photosynthetic bacteria group is activated when left standing under a light source. It is transformed into sludge that has the property of turning red in two weeks. The sludge reddened by the photosynthetic bacteria group suppresses spoilage bacteria, so even if it is carried out of the water treatment system, it can reduce the soil on-site without causing any damage to crop growth. As a result, surplus sludge treatment costs can be reduced. In addition, in the water treatment process, it is confirmed whether or not it has been transformed into sludge having the property of turning red. The sample sludge is drawn into a transparent bottle and left to stand for 3 to 7 days under a light source. This can be confirmed by the appearance of a double layer.
１ 水処理施設
２ 一次処理槽
２ａ 攪拌槽
２ｂ 沈降槽
２ｃ 傾斜部
２ｄ 仕切板
２ｅ 処理水取出し口
２ｆ 光源および浸漬型底部密閉透明円筒DESCRIPTION OF SYMBOLS 1
（第１の実施形態）
本発明に係る水処理方法では、浸漬型透明円筒内を介した光照射の下で、単一の一次処理槽内を、乳酸菌、酵母菌、糸状菌、放線菌の少なくとも２つを含む通性嫌気性の微生物が最も活動しやすい微好気の環境を常時保つことができるように、生成汚泥を他槽に移流させない仕組みを構築することによって、これらの通性嫌気性の微生物主体の分解を促進させる。これにより、悪臭やスカム発生を抑制しながら浄化の高度化を図り、さらに、光照射の下で生成された汚泥は、余剰汚泥として水処理系外に搬出された際、光源の元で静置をすると光合成細菌群が活性化し、１〜２週間で赤色化してくる性質を持つ汚泥に変成される。以下、本発明の実施形態について、図面を参照しながら説明する。(First embodiment)
In the water treatment method according to the present invention, a single primary treatment tank is subjected to light passing through the submerged transparent cylinder, and at least two of lactic acid bacteria, yeasts, filamentous fungi and actinomycetes are included. In order to maintain the microaerobic environment where anaerobic microorganisms are most active, it is possible to constantly decompose these facultative anaerobic microorganisms by constructing a mechanism that does not allow the generated sludge to be transferred to other tanks. Promote. As a result, purification is advanced while suppressing the generation of bad odors and scum, and the sludge generated under light irradiation is allowed to stand under the light source when it is transported out of the water treatment system as surplus sludge. If activated, the photosynthetic bacteria group is activated and transformed into sludge having the property of turning red in 1-2 weeks. Hereinafter, embodiments of the present invention will be described with reference to the drawings.
図１は、本実施形態に係る水処理方法の概要を示す図である。水処理施設１は、処理槽２を備えており、処理槽２は、後述する攪拌槽と沈降槽とを備えている。本実施形態に係る水処理方法では、まず、光照射の下で処理槽２内に汚水を流入させる。次に、通性嫌気性微生物資材を処理槽２に投入する。この通性嫌気性微生物資材は、乳酸菌、酵母菌、糸状菌、放線菌の少なくとも２つを含む通性嫌気性の微生物を複合した粉状、固形または液状の資材である。次に、処理槽２内を連続的または間欠的に攪拌する。そして、処理水を得る。
FIG. 1 is a diagram showing an outline of a water treatment method according to the present embodiment. The water treatment facility 1 includes a
従来の水処理技術においても、通性嫌気性微生物の培養液等が利用されている。しかし、従来の水処理技術では、有機物分解に係わる微生物を多様化する目的が主であり、槽内を通性嫌気性菌主体の生成汚泥に変成させる目的は持たない。また、培養液等は連続投入や間欠投入継続が必然となっている。本実施形態による水処理方法によれば、光合成細菌群活性化の下地をつくる為、処理槽内を通性嫌気性菌主体の生成汚泥に変成誘導することが必然であり、投入の意図が大きく異なる。また、資材投入は年１回にすることができる。 In the conventional water treatment technology, a culture solution of facultative anaerobic microorganisms is used. However, in the conventional water treatment technology, the purpose is mainly to diversify microorganisms involved in organic matter decomposition, and there is no purpose to transform the inside of the tank into produced sludge mainly composed of facultative anaerobic bacteria. In addition, the culture solution or the like must be continuously or intermittently continued. According to the water treatment method according to the present embodiment, in order to create a ground for photosynthetic bacteria group activation, it is necessary to induce transformation into sludge mainly composed of facultative anaerobic bacteria in the treatment tank, and the intention of input is large. Different. Moreover, material input can be made once a year.
図２は、処理槽２の概略構成を示す図である。処理槽２は、汚水および通性嫌気性微生物資材を攪拌する攪拌槽２ａと、攪拌後に固体と液体とを分離する沈降槽２ｂとから構成されている。攪拌槽２ａではエアレーション、回転羽、攪拌板等を用いて流入する有機物を連続的または間欠的に攪拌する。また、傾斜部２ｃは、沈降槽２ｂで分離された固体を、重力を介して攪拌槽２ａに戻す機能を果たすものである。仕切り板２ｄは、処理槽２を攪拌槽２ａと沈降槽２ｂとに分ける。このように処理された水は、処理水として取り出し口２ｅから取り出される。
FIG. 2 is a diagram showing a schematic configuration of the
このように、攪拌槽２ａにおいて、曝気ではなく攪拌を行なうので、攪拌槽２ａ内を微好気の環境に保つことが可能となる。また、沈降槽２ｂで分離された固体を、重力を介して攪拌槽２ａに戻すので、攪拌槽２ａに戻った菌体によって攪拌槽２ａ内の菌密度が流入する有機物よりも高くなり、有機物の分解を速めることが可能となる。その結果、有機物の分解速度が高まると共に、嫌気主体よりも有機物除去率が高く、高度処理水を得ることが可能となる。また、嫌気主体のように、スカムおよび悪臭を発生することがなくなる。
Thus, since stirring is performed in the
従来の水処理技術において、家庭用浄化槽の一次処理では、嫌気分解が用いられていた。しかし、嫌気分解は有機物の分解速度が遅く、スカムや悪臭が発生していた。本実施形態に係る水処理方法では、通性嫌気性微生物を用いて汚水を攪拌し、微好気状態とすることによって、スカムおよび悪臭の発生を抑制することができる。 In the conventional water treatment technology, anaerobic decomposition has been used in the primary treatment of household septic tanks. However, anaerobic decomposition had a slow organic decomposition rate and generated scum and odor. In the water treatment method according to the present embodiment, the generation of scum and malodor can be suppressed by stirring the sewage using facultative anaerobic microorganisms to bring it into a microaerobic state.
また、図２に示したように、同一槽内に攪拌槽２ａと沈降槽２ｂとを併せ持つ処理槽２に有機物（汚水）が流入すると、まず攪拌槽２ａにおいて、固形物が分解され、沈降槽２ｂに移行する。しかし、沈降した残留固形物は、傾斜部２ｃによって、重力を介して再び攪拌槽２ａに戻ることとなる。これにより、処理槽２内の通性嫌気性微生物群によって分解されることが繰り返される。ここで、攪拌槽２ａにおける菌密度を高めると共に、沈降槽２ｂにおける沈降を安定化させるために、同一の処理槽２内における攪拌槽２ａと沈降槽２ｂとの仕切りバランスは、沈降槽２ｂの容量を攪拌槽２ａの容量の２倍以上とし、最小攪拌で済ませるためには縦長構造が好ましい。
Further, as shown in FIG. 2, when organic matter (sewage) flows into the
従来の水処理技術においても、通性嫌気性処理は行われているが、その生成汚泥は好気槽や嫌気槽など各要素を持った処理槽へ移流される循環システムとなっており、生成汚泥が常時通性嫌気性の環境下にない。本実施形態による水処理方法によれば、生成汚泥は余剰汚泥として水処理系外に搬出された際、光源の元で静置をすると光合成細菌群が活性化し、１〜２週間で赤色化してくる性質を持つ汚泥に変成誘導することが求められることから、その処理環境に変動を与えないよう、生成汚泥を移流させず、常時通性嫌気性環境が維持される単一槽での処理が必然であり、且つコンパクトにもなり、経済的にも有利である。 Even in conventional water treatment technology, facultative anaerobic treatment is performed, but the generated sludge is a circulation system that is transferred to a treatment tank with various elements such as an aerobic tank and an anaerobic tank. Sludge is not always in an anaerobic environment. According to the water treatment method according to this embodiment, when the generated sludge is carried out of the water treatment system as surplus sludge, the photosynthetic bacteria group is activated when left standing under a light source, and turns red in 1 to 2 weeks. Since it is required to induce transformation to sludge with a coming property, the treatment in a single tank that always maintains a facultative anaerobic environment without advancing the generated sludge so as not to change the treatment environment. It is inevitable, compact, and economical.
また、沈降槽２ｂで固体と液体とが分離し、傾斜部２ｃによって攪拌槽２ａに戻った菌体により、攪拌槽２ａ内部の滞留菌体密度は、流入する有機物の密度よりも高くなる。攪拌槽２ａ内部での菌体密度が高いことから、有機物の分解速度が速まり、一次処理でありながら、その有機物除去率が高くなる。これにより、本実施形態に係る水処理方法では、次の工程で好気処理を行なう場合は、その処理負荷を軽減することができる。
Moreover, solid and liquid isolate | separate with the
なお、光照射は、底部を密閉した透明円筒を攪拌槽内に沈め、光源を透明円筒内または攪拌槽上部に配置して、透明円筒内を通して攪拌槽内部及び槽底部近くにまで光が届くようにし、菌体が常に光と接触できるようにする。この構成により、攪拌槽２a内は光源及び底部密閉透明円筒２fによって、万遍なく光照射を受けることになり、光合成細菌群活性化の下地をつくることになる。底部密閉透明円筒２fは、浸漬型透明円筒を構成する。
For light irradiation, a transparent cylinder with a sealed bottom is submerged in the stirring tank, and the light source is placed in the transparent cylinder or the upper part of the stirring tank so that the light can reach the inside of the stirring tank and near the bottom of the tank through the transparent cylinder. And make sure that the cells are always in contact with light. With this configuration, the inside of the
従来の水処理技術において、光合成細菌と光の関係はすでに知られているところである。しかし、光が光合成細菌の活動に寄与することだけで、活性化の速度にまでは及んでいない。本実施形態による光照射方法によれば、生成汚泥は余剰汚泥として水処理系外に搬出された際、光源の元で静置をすると１〜２週間で赤色化してくる性質を持つ汚泥に変成される。 In the conventional water treatment technology, the relationship between photosynthetic bacteria and light is already known. However, only the contribution of light to the activity of photosynthetic bacteria does not reach the rate of activation. According to the light irradiation method according to the present embodiment, when the generated sludge is carried out of the water treatment system as surplus sludge, it is transformed into sludge having a property of turning red in 1 to 2 weeks when left under a light source. Is done.
以上のように、本実施形態に係る一次処理方法によれば、（１）浸漬型透明円筒を介して光を照射しながら、常時通性嫌気条件下で水処理を行うこと。（２）浸漬型透明円筒を介して光を照射しながら、通性嫌気性主体の微生物資材を投入すること。（３）浸漬型透明円筒を介して光を照射しながら、その処理環境に変動を与えないよう、生成汚泥を移流させずに、単一槽で通性嫌気性環境を常時維持すること。これらの３つの条件を組み合わせることで、有機物除去率を高めて高度処理水を得るとともに、生成汚泥は余剰汚泥として水処理系外に搬出された際、光源の元で静置をすると光合成細菌群が活性化し、１〜２週間で赤色化してくる性質を持つ汚泥に変成される。光合成細菌群が優先化し赤色化した汚泥は腐敗菌を抑制する為、水処理系外に搬出されても、作物生育に障害を与えず、オンサイトで土壌還元ができる。その結果、余剰汚泥処理費が削減できる。ちなみに、水処理過程において、赤色化する性質を持つ汚泥に変成されたか否かの確認は、試料汚泥を透明瓶に汲み、光源の元で３〜７日静置すると、表層に赤とピンクの二重層が出現することで確認できる。 As described above, according to the primary treatment method according to the present embodiment, (1) water treatment is always performed under facultative anaerobic conditions while irradiating light through the immersion type transparent cylinder. (2) Putting microbial material mainly of facultative anaerobic while irradiating light through the immersion type transparent cylinder. (3) Always maintain a facultative anaerobic environment in a single tank without advancing the generated sludge so as not to change the treatment environment while irradiating light through the immersion type transparent cylinder. By combining these three conditions, the organic matter removal rate is increased to obtain highly treated water, and when the generated sludge is left outside the water treatment system as surplus sludge, if it is left under the light source, the photosynthetic bacteria group Is activated and transformed into sludge with the property of turning red in 1-2 weeks. The sludge reddened by the photosynthetic bacteria group suppresses spoilage bacteria, so even if it is carried out of the water treatment system, it can reduce the soil on-site without causing any damage to crop growth. As a result, surplus sludge treatment costs can be reduced. By the way, in the water treatment process, it is confirmed whether or not it has been transformed into sludge having the property of turning red. The sample sludge is drawn into a transparent bottle and left to stand for 3 to 7 days under a light source. This can be confirmed by the appearance of a double layer.
従来の水処理技術においても、すでに生成した汚泥に発酵と称して光合成細菌を人為的に加えて使用する例や活性を促すといった例はある。しかし、本実施形態による水処理方法によれば、通常の水処理を行い、且つ高度処理水を得る中で、その生成汚泥中に自然発生的に光合成細菌群が活性化してくるものであり、且つ水処理系外に搬出静置後、１〜２週間ですばやく出現して赤色化する等、従来技術と大きく異なるところである。 Even in the conventional water treatment technology, there are examples of using artificially added photosynthetic bacteria called fermentation to sludge that has already been generated and examples of promoting the activity. However, according to the water treatment method according to the present embodiment, while performing normal water treatment and obtaining highly treated water, the photosynthetic bacteria group is activated spontaneously in the generated sludge, And after carrying out and leaving out of a water treatment system, it is a place which differs greatly from a prior art, such as appearing rapidly in 1 to 2 weeks and turning red.
図３は、本実施形態に係る一次処理方法と、従来の一次処理方法の効果の比較例を示す図である。なお、本発明は、以下の実施例に限定されない。 FIG. 3 is a diagram showing a comparative example of the effects of the primary processing method according to the present embodiment and the conventional primary processing method. In addition, this invention is not limited to a following example.
実施例として、一次処理槽は次に示す大きさの攪拌槽および沈降槽を利用した。すなわち、幅７０ｍｍ、奥行き１４１ｍｍ、高さ５３２ｍｍ（水面高さ４６２ｍｍ）、有効容量４．５Ｌの攪拌槽と、有効容量７．４Ｌの沈降槽を利用した。この攪拌槽では槽内の溶存酸素を０．４ｐｐｍ前後とし、投入の通性嫌気性微生物資材量は処理槽容量比１，０００ｐｐｍ、汚水接触滞留時間１２時間とした。なお、本実施例では、溶存酸素は、１ｐｐｍ以下で、好ましくは、０．５ｐｐｍとする。 As an Example, the primary processing tank utilized the stirring tank and the sedimentation tank of the magnitude | size shown below. That is, a stirring tank having a width of 70 mm, a depth of 141 mm, a height of 532 mm (water surface height of 462 mm), an effective capacity of 4.5 L, and an effective capacity of 7.4 L was used. In this stirring tank, the dissolved oxygen in the tank was around 0.4 ppm, the amount of the facultative anaerobic microbial material charged was 1,000 ppm in the treatment tank volume ratio, and the sewage contact residence time was 12 hours. In this embodiment, the dissolved oxygen is 1 ppm or less, preferably 0.5 ppm.
上述した一次処理槽において、光照射の下６ヶ月間通性嫌気性分解を実施した。流入汚水濃度平均値は１６８ｐｐｍ、処理水平均値は５．２ｐｐｍだったことから、有機物除去率は平均９６．９％である。 In the primary treatment tank described above, facultative anaerobic decomposition was carried out for 6 months under light irradiation. Since the average value of the influent sewage concentration was 168 ppm and the average value of the treated water was 5.2 ppm, the organic matter removal rate was an average of 96.9%.
比較例として、従来の家庭用浄化槽での一次処理方法である嫌気ろ床槽では流入有機物濃度が２００ｐｐｍの場合、その一次処理水は１００〜８０ｐｐｍ、その有機物除去率は５０〜６０％である。このように、汚水の有機物除去において、本実施形態による汚水処理方法は、非常に優れていることがわかる。 As a comparative example, in an anaerobic filter bed tank which is a primary treatment method in a conventional household septic tank, when the inflow organic matter concentration is 200 ppm, the primary treated water is 100 to 80 ppm and the organic matter removal rate is 50 to 60%. Thus, it can be seen that the sewage treatment method according to the present embodiment is very excellent in removing organic matter from sewage.
さらに、この光照射の下で生成した通性嫌気性主体の生成汚泥を、０．４５Ｌ透明ガラス瓶に汲置きし、室温２０℃条件下で、光源の方向は上部と側面、その光源の下で静置したところ、３日〜７日で赤色出現した。その後、静置と攪拌を繰り返したところ、１ヶ月で濃赤色化した。ちなみに、汲置き直後の汚泥ｐＨは７．９６、１ヵ月後の濃赤色化の汚泥ｐＨは７．３２、と中性を保っていた。 Furthermore, the generated sludge mainly composed of facultative anaerobic substances generated by this light irradiation is pumped into a 0.45 L transparent glass bottle, and the direction of the light source is at the top and side, under the light source, at room temperature of 20 ° C. When left standing, a red color appeared in 3 to 7 days. Then, when it left still and stirring, it became dark red in one month. By the way, the sludge pH immediately after the pumping was 7.96, and the sludge pH of the deep red color after 1 month was 7.32, which was neutral.
比較例として、この点につき、従来の水処理方法で生成した好気主体の生成汚泥を、同条件下で実験をしたところ、序々に緑色に変化し、１ヶ月後は暗緑色化した。汲置き直後の汚泥ｐＨは６．９４、１ヵ月後の暗緑色化の汚泥ｐＨは８．７６で、ややアルカリに移行していた。ちなみに、水処理における中性域とは、５．８〜８．６である。 As a comparative example, an aerobic-based generated sludge generated by a conventional water treatment method was tested under the same conditions. As a comparative example, it gradually turned green and turned dark green after one month. The sludge pH immediately after pumping was 6.94, and the sludge pH of dark green color after one month was 8.76, which was slightly shifted to alkali. Incidentally, the neutral range in water treatment is 5.8 to 8.6.
さらに、実施例として、赤色化の過程を調べてみた。上述した攪拌槽において、生成した通性嫌気性の微汚泥を、０．４５Ｌ透明ガラス瓶に汲置きし、周囲をアルミ箔で囲って光の侵入を防ぎ、光源からの光を上からの１方向として実験を行った。これは、実際のフィールドでの埋設状態時を想定したものである。 Furthermore, as an example, the process of reddening was examined. In the agitation tank described above, the generated facultative anaerobic fine sludge is pumped into a 0.45 L transparent glass bottle, surrounded by aluminum foil to prevent light from entering, and the light from the light source is directed in one direction from above. As an experiment. This assumes that the actual field is buried.
その結果、静置時間帯において、汚泥界面直下２〜３ｃｍが赤色移行し、その下に０．５ｃｍ幅のピンク帯層が出現、その下層は赤色前の汚泥色であった。これを攪拌時間帯に混ぜあわせる。この静置と攪拌を繰り返すことで、全体が序々に赤色化されてくることがわかった。 As a result, in the standing time zone, 2 to 3 cm immediately below the sludge interface shifted to red, a 0.5 cm wide pink belt layer appeared below, and the lower layer had a sludge color before red. Mix this during the stirring period. It turned out that the whole thing turns red gradually by repeating this standing and stirring.
さらに、実施例として、０．４５Ｌ透明ガラス瓶の蓋を全開した試料と全閉した試料を作製し、赤色化が紅色非硫黄細菌か、紅色硫黄細菌によるものかの確認をしたところ、いずれも同規模で赤色化した。本実施形態による汚泥変成は、静置後の環境下に係らず、いずれも赤色出現することがわかった。ちなみに、赤色化は光合成細菌の細胞内に含有されるカロテノイドの蓄積により、赤色ないし褐色を呈することで、目に見える形として出現するものである。 Furthermore, as an example, a sample in which the lid of a 0.45 L transparent glass bottle was fully opened and a sample in which the lid was fully closed was prepared, and it was confirmed whether redness was caused by red non-sulfur bacteria or red sulfur bacteria. It turned red on a scale. It was found that sludge metamorphosis according to the present embodiment appears red regardless of the environment after standing. By the way, redness appears red or brown due to the accumulation of carotenoids contained in the cells of photosynthetic bacteria, and appears as a visible form.
さらに、実施例として、赤色維持の確認のため、４ヶ月間追跡実験をした。上述した一次処理槽において、生成した通性嫌気性汚泥を、透明プラスチックケースに３Ｌ汲置きし、攪拌せず、常温静置を続けたところ、４日目で表層白い菌糸発生、８日目で表層赤色化、１ヶ月で表層濃赤色化し、表層淡赤色に移行しながら４ヶ月経過した。ちなみに、汲置き直後の汚泥ｐＨは７．７２、４ヶ月後の淡赤色汚泥ｐＨは上澄み液８．０１、汚泥層８．０３、と中性を保っていた。 Furthermore, as an example, a follow-up experiment was conducted for 4 months to confirm the maintenance of red color. In the above-mentioned primary treatment tank, 3L of the generated facultative anaerobic sludge was placed in a transparent plastic case and kept at room temperature without stirring. When white hyphae appeared on the 4th day, on the 8th day The surface layer turned red, the surface layer turned dark red in 1 month, and 4 months passed while shifting to the surface layer light red. By the way, the sludge pH immediately after the pumping was 7.72, and the light red sludge pH after 4 months was neutral with the supernatant liquid 8.01 and the sludge layer 8.03.
比較例として、この点につき、従来の水処理方法で生成した好気主体の微生物汚泥を、同条件下で実験をしたところ、１ヶ月後は表層緑色化、２ヶ月後以降は表層暗緑色化のまま４ヶ月経過した。ちなみに、汲置き直後の汚泥ｐＨは６．９２、４ヶ月後の暗緑色汚泥ｐＨは上澄み液９．９５、汚泥層８．８０、とアルカリに移行していた。 As a comparative example, an aerobic-based microbial sludge produced by a conventional water treatment method was tested under the same conditions in this respect. After 1 month, the surface became green, and after 2 months, the surface became dark green. Four months have passed. By the way, the sludge pH immediately after the transfer was 6.92, and the dark green sludge pH after 4 months was transferred to alkali with a supernatant liquid of 9.95 and a sludge layer of 8.80.
さらに、実施例として、１ヶ月熟成した濃赤色汚泥を土壌還元できるかを実験した。土表面積５０平方ｃｍの丸プランターに小松菜の種を撒いたのち、濃赤色汚泥０．４５Ｌで土表面を覆った。１週間後３１個の発芽を確認し、１ヶ月後は葉丈１０ｃｍに成長したことから、濃赤色汚泥は土壌還元時に作物の発芽に影響しないことがわかった。 Furthermore, as an example, an experiment was conducted on whether dark red sludge aged for one month could be reduced to the soil. After seeding Komatsuna seeds on a round planter with a soil surface area of 50 square centimeters, the soil surface was covered with 0.45 L of dark red sludge. After one week, 31 germinations were confirmed, and after one month, the leaf height grew to 10 cm. Thus, it was found that dark red sludge did not affect the germination of crops during soil reduction.
さらに、実施例として、１ヶ月熟成した濃赤色汚泥が、成長途中の作物がある土壌に還元できるかを実験した。上述した小松菜の成長した丸プランターを用いて、発芽から２ヶ月後、葉丈１９．５ｃｍに成長した小松菜に、１ヶ月熟成した濃赤色汚泥０．４５Ｌを、茎部が浸るほど土表面に撒いた。２週間後の葉丈は２５ｃｍに成長したことから、濃赤色汚泥は土壌還元時に作物の成長に影響しないことがわかった。ちなみに、森の土壌の表層部１０〜１５ｃｍは、光合成細菌を含む通性嫌気性微生物の住みかといわれている。 Furthermore, as an example, an experiment was conducted to determine whether dark red sludge aged for one month could be reduced to soil with growing crops. Using the above-mentioned round planter grown with Komatsuna, 2 months after germination, Komatsuna grown to 19.5 cm in leaf height, 0.45 L of dark red sludge aged for 1 month is sowed on the soil surface that the stem part is immersed. It was. Since the leaf height grew to 25 cm after 2 weeks, it was found that dark red sludge did not affect the growth of crops during soil reduction. By the way, it is said that the surface layer of 10-15 cm of forest soil is home to facultative anaerobic microorganisms containing photosynthetic bacteria.
さらに、実施例として、１ヶ月熟成した濃赤色汚泥が、作物の結実に障害を与えるか否かを実験した。無施肥および無処理の土壌各７Ｌを用意し、Ａ区を対照区（追肥なし）とし、Ｂ区を赤色汚泥区（実験期間投入赤色汚泥０．４５Ｌ×７回＝合計３．１５Ｌ投入）として、１３８日間ミニトマトの生育比較実験をした。結果、Ｂ区の赤色汚泥区はＡ区の対照区と比較して、茎丈比較で２倍増、収穫累計個数比較で４．１倍増、収穫累計重量比較で５．５倍増であったことから、濃赤色汚泥は作物の結実に障害を与えないばかりか、生育促進に寄与することがわかった。 Furthermore, as an example, an experiment was conducted to determine whether dark red sludge aged for one month would hinder crop fruiting. Prepare 7L each of non-fertilized and untreated soil, A zone as control zone (no additional fertilization), B zone as red sludge zone (experimental period red sludge 0.45L x 7 times = total 3.15L input) A comparative experiment of cherry tomato growth was conducted for 138 days. As a result, the red sludge in the B zone was doubled by the stem length comparison, 4.1 times by the cumulative number of harvest comparison, and 5.5 times by the cumulative harvest weight comparison compared to the control zone of the A zone. It was found that dark red sludge not only did not impair the fruiting of crops but also contributed to growth promotion.
（第２の実施形態）
本発明は、余剰汚泥の処理について適用することも可能である。すなわち、この汚泥処理方法では、浸漬型透明円筒内を介した光照射の下、バッチ投入した余剰汚泥に栄養分としての汚水を連続的に加えた汚泥処理槽内を、乳酸菌、酵母菌、糸状菌、放線菌の少なくとも２つを含む通性嫌気性の微生物が最も活動しやすい微好気の環境を均一に保つことによって、通性嫌気性菌主体の微生物汚泥に変成させる。これにより、系外に搬出されても悪臭を放すことがなくなる。さらに、熟成槽に導出された通性嫌気性菌主体の微生物汚泥は、光源の下で静置と攪拌とを繰り返すことにより、光合成細菌を増殖させ、赤色化したのち、土壌に直接還元する。(Second Embodiment)
The present invention can also be applied to the treatment of excess sludge. That is, in this sludge treatment method, the inside of the sludge treatment tank in which the sludge as a nutrient is continuously added to the surplus sludge charged in a batch under light irradiation through the submerged transparent cylinder, lactic acid bacteria, yeast, filamentous fungi By maintaining a uniform microaerobic environment in which facultative anaerobic microorganisms containing at least two actinomycetes are most active, they are transformed into microbial sludge mainly composed of facultative anaerobes. Thereby, even if it is carried out of the system, it does not give off a bad odor. Further, the microbial sludge mainly composed of facultative anaerobic bacteria led to the aging tank is allowed to stand and stir under a light source to grow photosynthetic bacteria, turn red, and then directly reduce to the soil.
図４は、上記汚泥処理方法の概要を示す図である。汚泥処理施設２−１は、汚泥処理槽２−２と熟成槽２−３とを備えている。本実施形態に係る汚泥処理方法では、まず、汚泥処理槽２−２内に余剰汚泥をバッチ投入し、栄養分としての汚水を連続流入させる。次に通性嫌気性資材を汚泥処理槽２−２に投入する。この通性嫌気性資材は、乳酸菌、酵母菌、糸状菌、放線菌の少なくとも２つを含む通性嫌気性の微生物を複合した粉状、固形または液状の資材である。 FIG. 4 is a diagram showing an outline of the sludge treatment method. The sludge treatment facility 2-1 includes a sludge treatment tank 2-2 and an aging tank 2-3. In the sludge treatment method according to the present embodiment, first, surplus sludge is batch-fed into the sludge treatment tank 2-2, and sewage as nutrient is continuously introduced. Next, the facultative anaerobic material is put into the sludge treatment tank 2-2. This facultative anaerobic material is a powdery, solid or liquid material in which facultative anaerobic microorganisms containing at least two of lactic acid bacteria, yeasts, filamentous fungi and actinomycetes are combined.
次に、汚泥処理槽２−２内を連続または間欠に攪拌する。そして、通性嫌気性菌主体の微生物汚泥と処理水を得る。さらに、通性嫌気性菌主体の微生物汚泥は熟成槽２−３に導出される。導出された通性嫌気性菌主体の微生物汚泥は熟成槽２−３内で赤色化される。 Next, the inside of the sludge treatment tank 2-2 is stirred continuously or intermittently. And microbial sludge and treated water mainly of facultative anaerobic bacteria are obtained. Further, the microbial sludge mainly composed of facultative anaerobic bacteria is led to the aging tank 2-3. The derived microbial sludge mainly composed of facultative anaerobic bacteria is turned red in the aging tank 2-3.
図５は、汚泥処理槽２−２と熟成槽２−３の概略構成を示す図である。汚泥処理槽２−２は余剰汚泥、栄養分としての汚水、ならびに通性嫌気性微生物資材を攪拌する攪拌槽２−２ａと攪拌槽２−２ａ内に浸漬した光照射用底部密閉透明円筒２−２fと攪拌後に固体と液体とを分離する沈降槽２−２ｂとから構成されている。攪拌槽２−２ａではエアレーション、回転羽、攪拌板等を用いて流入する有機物を連続的または間欠的に攪拌する。仕切り板２−２ｃは汚泥処理槽２−２を攪拌槽２−２ａと沈降槽２−２ｂとに分ける。 FIG. 5 is a diagram showing a schematic configuration of the sludge treatment tank 2-2 and the aging tank 2-3. The sludge treatment tank 2-2 is composed of a stirring tank 2-2a for stirring excess sludge, sewage as nutrients, and facultative anaerobic microorganism materials, and a bottom transparent cylinder for light irradiation immersed in the stirring tank 2-2a 2-2f. And a settling tank 2-2b that separates the solid and the liquid after stirring. In the agitation tank 2-2a, the inflowing organic matter is agitated continuously or intermittently using aeration, rotating blades, agitation plates and the like. The partition plate 2-2c divides the sludge treatment tank 2-2 into a stirring tank 2-2a and a settling tank 2-2b.
このように処理された水は、処理水として取出し口２−２ｄから取り出される。また、攪拌槽２−２ａ内で生成した通性嫌気性菌主体の微生物汚泥は排出口２−２ｅから熟成槽２−３に導かれる。熟成槽２−３では光源２−３ａの下で静置と攪拌を繰返す。 The water treated in this way is taken out from the outlet 2-2d as treated water. Further, the microbial sludge mainly composed of facultative anaerobic bacteria generated in the agitation tank 2-2a is guided from the discharge port 2-2e to the aging tank 2-3. In the aging tank 2-3, the standing and stirring are repeated under the light source 2-3a.
このように、攪拌槽２−２ａにおいて、浸漬型透明円筒２−２f内を介した光照射の下、曝気ではなく攪拌を行なうので、攪拌槽２−２ａ内は微好気の環境を均一に保つことが可能となる。これにより、系外に搬出されても悪臭を放すことのない通性嫌気性菌主体の微生物汚泥に変成することができる。また、この通性嫌気性菌主体の微生物汚泥を熟成槽２−３に導いたのち、光源２−３ａの下で静置と攪拌を繰り返す。これにより、通性嫌気性微生物汚泥群の中の光合成細菌の増殖が促進されることから、赤色化され、土壌に直接還元することが可能となる。 In this manner, in the stirring tank 2-2a, stirring is performed instead of aeration under light irradiation through the immersion transparent cylinder 2-2f, so that the inside of the stirring tank 2-2a has a uniform aerobic environment. It becomes possible to keep. Thereby, even if it is carried out of the system, it can be transformed into microbial sludge mainly composed of facultative anaerobic bacteria that does not give off malodor. Further, after introducing the microbial sludge mainly composed of facultative anaerobic bacteria to the aging tank 2-3, the stationary and stirring are repeated under the light source 2-3a. Thereby, since the proliferation of photosynthetic bacteria in facultative anaerobic microorganism sludge group is promoted, it becomes red and can be directly reduced to the soil.
従来の水処理技術においては、曝気による好気処理が用いられている。しかし、好気処理で生成した活性汚泥は、余剰汚泥として系外に搬出されると、時間経過とともに、その生息環境を失い、黒灰色の腐敗症状を呈し、悪臭を放していた。本実施形態に係る汚泥処理方法では、好気処理で生成した余剰汚泥をバッチ投入し、通性嫌気性微生物資材を用いて少量の栄養分としての汚水を連続投入しながら攪拌し、微好気状態とすることによって、通性嫌気性菌主体の微生物汚泥に変成し、系外に搬出しても、悪臭の発生を抑制できる。 In the conventional water treatment technology, aerobic treatment by aeration is used. However, when the activated sludge produced by the aerobic treatment was transported out of the system as surplus sludge, it lost its habitat over time, exhibited black-gray rot, and gave off a foul odor. In the sludge treatment method according to the present embodiment, the surplus sludge generated by the aerobic treatment is batch-added, and the sewage as a small amount of nutrients is continuously stirred using the facultative anaerobic microbial material, and is in a slightly aerobic state. Therefore, even if it is transformed into microbial sludge mainly composed of facultative anaerobic bacteria and carried out of the system, the generation of malodor can be suppressed.
また、従来の水処理技術で行なわれていた余剰汚泥処理は、余剰汚泥としての活性汚泥を汚泥貯留槽に貯留後、バギューム車によって、処理場に搬出し、エネルギーおよびコストをかけて焼却、埋立て、一部堆肥化されていた。本実施形態に係る余剰汚泥処理によれば、余剰汚泥を通性嫌気性菌主体の微生物汚泥に変成したのち、熟成槽に導出し、光源の下で静置および攪拌を繰り返す。これにより、通性嫌気性微生物汚泥群の中の光合成細菌の増殖が促進されることから、赤色化され、土壌に直接還元することが可能となる。 In addition, surplus sludge treatment that has been carried out with conventional water treatment technology, after storing activated sludge as surplus sludge in a sludge storage tank, it is transported to a treatment plant by a baggage vehicle, incinerated and landfilled with energy and costs. Partly composted. According to the surplus sludge treatment according to the present embodiment, the surplus sludge is transformed into microbial sludge mainly composed of a facultative anaerobic bacterium, and then led out to an aging tank, and the standing and stirring are repeated under a light source. Thereby, since the proliferation of photosynthetic bacteria in facultative anaerobic microorganism sludge group is promoted, it becomes red and can be directly reduced to the soil.
Claims (2)
前記家庭用浄化槽内部に設けられた浸漬型透明円筒を介して、前記家庭用浄化槽内部に光を照射し、常時通性嫌気条件下で前記有機性排水の処理を行なう工程と、
前記浸漬型透明円筒を介して、前記家庭用浄化槽内部に光を照射しつつ、前記家庭用浄化槽に乳酸菌、酵母菌、糸状菌または放線菌の少なくとも２つを含む通性嫌気性の微生物資材を投入する工程と、
前記浸漬型透明円筒を介して、前記家庭用浄化槽内部に光を照射しつつ、処理環境に変動を与えないよう生成汚泥を移流させずに、前記家庭用浄化槽内の通性嫌気性環境を維持する工程と、
を含み、前記家庭用浄化槽内の溶存酸素が１ｐｐｍ以下の通性嫌気性環境が維持されることを特徴とする家庭用浄化槽における一次処理方法。It is a primary treatment method of organic wastewater that has flowed into a domestic septic tank,
Irradiating the interior of the domestic septic tank through an immersion type transparent cylinder provided inside the domestic septic tank, and performing the treatment of the organic waste water under constantly anaerobic conditions;
A facultative anaerobic microbial material containing at least two of lactic acid bacteria, yeasts, filamentous fungi or actinomycetes in the household septic tank while irradiating light inside the household septic tank through the immersion type transparent cylinder The process of input,
While irradiating light inside the domestic septic tank through the immersion type transparent cylinder, maintaining the facultative anaerobic environment in the domestic septic tank without transferring the generated sludge so as not to change the processing environment. And a process of
And a facultative anaerobic environment in which the dissolved oxygen in the household septic tank is 1 ppm or less is maintained.
前記搬出した生成汚泥に対して、光を照射する工程と、を更に含むことを特徴とする請求項１記載の家庭用浄化槽における一次処理方法。Carrying the generated sludge out of the system;
The primary treatment method in a domestic septic tank according to claim 1, further comprising a step of irradiating light to the carried-out generated sludge.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2011/054461 WO2012117490A1 (en) | 2011-02-28 | 2011-02-28 | Primary treatment method in household septic tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPWO2012117490A1 JPWO2012117490A1 (en) | 2014-07-07 |
| JP5550780B2 true JP5550780B2 (en) | 2014-07-16 |
Family
ID=46757458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2013502068A Expired - Fee Related JP5550780B2 (en) | 2011-02-28 | 2011-02-28 | Primary treatment method in household septic tank |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5550780B2 (en) |
| WO (1) | WO2012117490A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102436828B1 (en) * | 2021-04-19 | 2022-08-26 | 주식회사 부강테크 | Apparatus for Treating Wastewater Using Algae Granules |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4926481A (en) * | 1972-07-10 | 1974-03-08 | ||
| JPS61195399U (en) * | 1985-05-24 | 1986-12-05 | ||
| JPH04166076A (en) * | 1990-10-26 | 1992-06-11 | Fuji Electric Co Ltd | Photosynthesis reactor system |
| JPH06214097A (en) * | 1992-11-23 | 1994-08-05 | Commiss Energ Atom | Apparatus and method for purification of waste liquid |
| JPH07303898A (en) * | 1994-05-16 | 1995-11-21 | Toshiba Corp | Waste water treatment plant |
| JPH0884983A (en) * | 1994-09-16 | 1996-04-02 | Agency Of Ind Science & Technol | Method and device for accelerating environmental revival |
| JP2000239591A (en) * | 1999-02-19 | 2000-09-05 | Hewlett Packard Co <Hp> | Solvent for enhancing printability and drop ejection of ink containing latex polymer |
| JP2001232388A (en) * | 2000-02-22 | 2001-08-28 | Sumitomo Heavy Ind Ltd | Method and apparatus for treating waste liquor |
| JP2004358429A (en) * | 2003-06-06 | 2004-12-24 | National Institute Of Advanced Industrial & Technology | Sludge treatment facility, and sludge treatment method |
| JP2008272721A (en) * | 2007-04-25 | 2008-11-13 | Toshikazu Shimodaira | Bio-type (non-chemical feed/non-aeration) water treatment system |
| WO2010064608A1 (en) * | 2008-12-05 | 2010-06-10 | Katayose Shigeru | Method of treating water and water treatment tank |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6438200A (en) * | 1987-08-05 | 1989-02-08 | Mitsui Shipbuilding Eng | Treatment of sludge |
| JP2649995B2 (en) * | 1991-04-03 | 1997-09-03 | デンカエンジニアリング株式会社 | Biological treatment method and apparatus for organic acid wastewater |
| JPH09314165A (en) * | 1996-05-23 | 1997-12-09 | Denka Consult & Eng Co Ltd | Treatment method for waste water containing organic substance |
| JP3184970B2 (en) * | 1998-09-14 | 2001-07-09 | 経済産業省産業技術総合研究所長 | Anaerobic digestion method of organic wastewater and / or organic waste using light and method of producing photosynthetic bacteria |
| JP2002177984A (en) * | 2000-12-12 | 2002-06-25 | Yoshiki Taki | Treatment of livestock waste water |
| JP2002239591A (en) * | 2001-02-15 | 2002-08-27 | Shimizu Masaharu | Method for treating sewage of circulating flash toilet |
| JP3873114B2 (en) * | 2001-08-22 | 2007-01-24 | 独立行政法人産業技術総合研究所 | Processing method of organic solid waste |
| JP2003211183A (en) * | 2002-01-29 | 2003-07-29 | Yasutoshi Takashima | Water cleaning apparatus for rainwater or the like |
-
2011
- 2011-02-28 JP JP2013502068A patent/JP5550780B2/en not_active Expired - Fee Related
- 2011-02-28 WO PCT/JP2011/054461 patent/WO2012117490A1/en active Application Filing
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4926481A (en) * | 1972-07-10 | 1974-03-08 | ||
| JPS61195399U (en) * | 1985-05-24 | 1986-12-05 | ||
| JPH04166076A (en) * | 1990-10-26 | 1992-06-11 | Fuji Electric Co Ltd | Photosynthesis reactor system |
| JPH06214097A (en) * | 1992-11-23 | 1994-08-05 | Commiss Energ Atom | Apparatus and method for purification of waste liquid |
| JPH07303898A (en) * | 1994-05-16 | 1995-11-21 | Toshiba Corp | Waste water treatment plant |
| JPH0884983A (en) * | 1994-09-16 | 1996-04-02 | Agency Of Ind Science & Technol | Method and device for accelerating environmental revival |
| JP2000239591A (en) * | 1999-02-19 | 2000-09-05 | Hewlett Packard Co <Hp> | Solvent for enhancing printability and drop ejection of ink containing latex polymer |
| JP2001232388A (en) * | 2000-02-22 | 2001-08-28 | Sumitomo Heavy Ind Ltd | Method and apparatus for treating waste liquor |
| JP2004358429A (en) * | 2003-06-06 | 2004-12-24 | National Institute Of Advanced Industrial & Technology | Sludge treatment facility, and sludge treatment method |
| JP2008272721A (en) * | 2007-04-25 | 2008-11-13 | Toshikazu Shimodaira | Bio-type (non-chemical feed/non-aeration) water treatment system |
| WO2010064608A1 (en) * | 2008-12-05 | 2010-06-10 | Katayose Shigeru | Method of treating water and water treatment tank |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012117490A1 (en) | 2012-09-07 |
| JPWO2012117490A1 (en) | 2014-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Tang et al. | Enhanced nitrogen and phosphorus removal from domestic wastewater via algae-assisted sequencing batch biofilm reactor | |
| Wang et al. | Removal of nutrients from undiluted anaerobically treated piggery wastewater by improved microalgae | |
| Zhao et al. | Evaluation of revolving algae biofilm reactors for nutrients and metals removal from sludge thickening supernatant in a municipal wastewater treatment facility | |
| Das et al. | Microalgal nutrients recycling from the primary effluent of municipal wastewater and use of the produced biomass as bio-fertilizer | |
| Luo et al. | Simultaneous microalgae cultivation and wastewater treatment in submerged membrane photobioreactors: a review | |
| Franchino et al. | Growth of three microalgae strains and nutrient removal from an agro-zootechnical digestate | |
| Karya et al. | Photo-oxygenation to support nitrification in an algal–bacterial consortium treating artificial wastewater | |
| US10189732B2 (en) | Algal-sludge granule for wastewater treatment and bioenergy feedstock generation | |
| Díez-Montero et al. | Evaluation of daily and seasonal variations in a semi-closed photobioreactor for microalgae-based bioremediation of agricultural runoff at full-scale | |
| JP2015167912A (en) | Livestock excreta treating system | |
| CN106430820B (en) | A kind of biological treatment device and its technique of high ammonia nitrogen pig raising biogas slurry | |
| Mungray et al. | Anionic surfactants in treated sewage and sludges: risk assessment to aquatic and terrestrial environments | |
| Phang | Algal production from agro-industrial and agricultural wastes in Malaysia | |
| CN106587356B (en) | Biological membrane preparation method | |
| Dalvi et al. | Year-long performance assessment of an on-site pilot scale (100 L) photobioreactor on nutrient recovery and pathogen removal from urban wastewater using native microalgal consortium | |
| KR20170105950A (en) | An autothermal aerobic/anaerobic digestion system in swine farms | |
| CN103648987B (en) | For system and its working method of decomposing organic compounds | |
| Randrianarison et al. | Microalgae plant (Chlorella sp.) for wastewater treatment and energy production | |
| Ashraf et al. | Integrating photobioreactor with conventional activated sludge treatment for nitrogen removal from sidestream digestate: Current challenges and opportunities | |
| CN105060648B (en) | Industrial circulating water fish culture denitrogenation Zero discharging system | |
| KR101902337B1 (en) | Liquid fertilizer plant system for livestock manure and method for manufacturing liquid fertilizer of livestock manure using same | |
| KR101406327B1 (en) | Method for producing soil microbial agent using waste of food leachate and soil microbial agent made by this method | |
| JP5550780B2 (en) | Primary treatment method in household septic tank | |
| Taylor et al. | Empirical comparison of activated sludge and high rate algal ponding technologies used to recover water, nitrogen and carbon from brewery effluent | |
| KR100850677B1 (en) | Method for treating sludge of sewage or organicwastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20140513 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20140520 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 5550780 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |