JP4381556B2

JP4381556B2 - Merger processing septic tank

Info

Publication number: JP4381556B2
Application number: JP2000102869A
Authority: JP
Inventors: 正記伊達; 淳日比野
Original assignee: Housetec Inc
Current assignee: Housetec Inc
Priority date: 2000-02-29
Filing date: 2000-02-29
Publication date: 2009-12-09
Anticipated expiration: 2020-02-29
Also published as: JP2001239288A

Description

【０００１】
【発明の属する技術分野】
本発明は、合併処理浄化槽に関する。
【０００２】
【従来の技術】
屎尿の浄化処理を行う分離接触曝気方式の単独処理浄化槽は、図８に示すように、屎尿は、単独処理浄化槽１の流入口２から沈殿分離室３へ流入させて固液分離および嫌気処理を行って接触曝気室４へ移流する。接触曝気室４内では、移流した処理水を散気管７から散気する空気の泡により撹拌して接触材８に接触させ、栄養基質の酸化除去を徐々に行う。接触材８は、撹拌を継続することにより生物膜が厚く堆積して閉塞するので、定期的に逆洗管９より空気泡を吐出することにより生物膜を剥離する。接触曝気室４を通過した処理水は沈殿室５へ移流し、沈殿室５にて固形分の沈殿分離を行い、上澄み液を消毒室６へ移流させて滅菌処理して流出口１０から系外へ放流する。なお、１１は、消毒剤を収容して消毒室６に設置した消毒剤容器である。
【０００３】
【発明が解決しようとする課題】
しかしながら、単独処理浄化槽は、処理すべき汚水の種類が屎尿に限定され、台所排水，洗濯排水，洗面排水および浴槽排水等の生活雑排水を処理することができない。このような問題は、既設の単独処理浄化槽を撤去して新たに合併処理浄化槽を設置することで解決することができるが、施工費用が高額となるばかりでなく、多くの単独処理浄化槽がＦＲＰ製であることから、不要となった単独処理浄化槽の処分に関しても新たな問題が発生する。また、単独処理浄化槽を掘り起こすことなく埋め殺す場合には、処分に関する問題が発生しないものの、土地の有効活用ができないという別の問題を発生させる。
【０００４】
本発明は、このような課題に鑑みてなされたものであり、既設の単独処理浄化槽を有効利用することで、合併処理浄化槽を構成するときに単独処理浄化槽の処分問題を解決すると共に、新たに合併処理浄化槽を購入するよりも安価に構成することができる合併処理浄化槽を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明は、第１嫌気処理部および該第１嫌気処理部からの排水につき再度の固液分離および嫌気処理を行う第２嫌気処理部および消毒室を備えた単独処理浄化槽と、生物濾過槽を備えた合併処理化装置と、を備え、前記単独処理浄化槽の消毒室の直前と前記合併処理化装置の流入口とを接続し、前記合併処理化装置の流出口と前記単独処理浄化槽の消毒室を接続し、前記単独処理浄化槽の流入口に排水を流入させるための配管を設け、前記合併処理化装置の生物濾過槽から洗浄排水を引き抜いて前記第１嫌気処理部に返送するための洗浄排水移送管を設け、浴槽排水配管を前記合併処理化装置の流入口の直前に接続し、または前記単独処理浄化槽の消毒室に接続し、前記浴槽排水配管の途中に流量調整弁を設けたことを特徴とする。
また、前記第２嫌気処理部は、既設単独処理浄化槽の接触曝気室に設置されていた接触材を不規則充填の嫌気濾材と入れ替えてなることを特徴とする。
本発明は、沈殿分離室と接触曝気室を備えた既設単独処理浄化槽を、前記沈殿分離室に嫌気濾材を充填して第１嫌気処理部に変更し、前記接触曝気室を前記第１嫌気処理部からの排水につき再度の固液分離および嫌気処理を行う第２嫌気処理部に変更してなる単独処理浄化槽と、生物濾過槽を備えた合併処理化装置と、を備え、前記単独処理浄化槽の消毒室の直前と前記合併処理化装置の流入口とを接続し、前記合併処理化装置の流出口と前記単独処理浄化槽の消毒室を接続し、前記単独処理浄化槽の流入口に排水を流入させるための配管を設け、前記合併処理化装置の生物濾過槽から洗浄排水を引き抜いて前記第１嫌気処理部に返送するための洗浄排水移送管を設け、浴槽排水配管を前記合併処理化装置の流入口の直前に接続し、または前記単独処理浄化槽の消毒室に接続し、前記浴槽排水配管の途中に流量調整弁を設けたことを特徴とする。
本発明は、沈殿分離室と接触曝気室と沈殿室と消毒室を備えた既設単独処理浄化槽を、前記沈殿分離室に嫌気濾材を充填して第１嫌気処理部に変更し、前記接触曝気室を空気供給停止にして前記第１嫌気処理部からの排水につき再度の固液分離および嫌気処理を行う第２嫌気処理部に変更してなる単独処理浄化槽と、生物濾過槽を備えた合併処理化装置と、を備え、前記単独処理浄化槽の消毒室の直前と前記合併処理化装置の流入口とを接続し、前記合併処理化装置の流出口と前記単独処理浄化槽の消毒室を接続し、前記単独処理浄化槽の流入口に排水を流入させるための配管を設け、前記合併処理化装置の生物濾過槽から洗浄排水を引き抜いて前記第１嫌気処理部に返送するための洗浄排水移送管を設け、浴槽排水配管を前記合併処理化装置の流入口の直前に接続し、または前記単独処理浄化槽の消毒室に接続し、前記浴槽排水配管の途中に流量調整弁を設けたことを特徴とする。
【０００６】
そして、生物濾過槽は、底部に散気管を配置した生物反応部と濾過部とを備え、前記濾過部の通過水を嫌気処理部へ返送する洗浄排水移送管を設けたことを特徴とする。
【０００９】
または、前記合併処理化装置に流量調整槽を設けたことを特徴とする。
【００１０】
【発明の実施の形態】
本発明における単独処理浄化槽は、第１嫌気処理部および第２嫌気処理部および消毒室を備え、既設または既存の単独処理浄化槽における沈殿分離室と空気供給を停止した接触曝気室および消毒室を利用して構成する。具体的には、従来の技術で説明したように、流入口および流出口を備え、内部に上流側から沈殿分離室，接触曝気室，沈殿室，消毒室を備えた単独処理浄化槽を好適に利用することができる。
【００１１】
第１嫌気処理部は、従来の技術で説明した単独処理浄化槽の沈殿分離室のように濾材等が充填されていない場合には、既設の単独処理浄化槽の沈殿分離室に嫌気濾材を充填して構成するすることが好ましい。更に好ましくは、嫌気濾材は不規則充填のものが良い。これは、空気で強制的に攪拌しない嫌気処理法は不規則充填の方が、処理水が拡散し易く室内をより広く有効に使うことができるからである。
【００１２】
次に、第２嫌気処理部は、空気の供給を停止した曝気処理室を使用する。曝気処理室に設置してある散気管は取り外しても良く、また、曝気処理室に好気濾材（接触材）が設置してある場合には取り外しても良いが、好ましくはそのまま嫌気濾材として使用する。更に好ましくは、不規則充填の嫌気濾材と入れ替える。これは、多くの場合、好気濾材は規則充填されており、空気で強制的に攪拌しない嫌気処理法は不規則充填の方が処理水が拡散し易く室内をより広く有効に使うことができるからである。
【００１３】
合併処理化装置は、少なくとも好気処理を行うための生物濾過槽があれば特にそれ以外の制約はなく、生物濾過槽は、底部に散気管を配置した生物反応部および同じく底部に散気管を配置した濾過部を備えたものであることが好ましい。
【００１４】
生物反応部は、その底部に配置した散気管より空気泡を吐出させて好気処理を行う部分であり、担体を用いたものを好適に使用することができる。なお、ここで言う担体とは、微生物を多く保持することを可能にすることから、網様円筒状，骨格様球状，へちま状，小円筒状，波板状，チューブ状，繊維絡み状等の合成樹脂製の成形体、独立気泡体または連通気泡体を有した合成樹脂製の成形体、アンスラサイト（無煙炭），珪砂，セラミック等の無機体を好適に用いることができる。また、前記担体は浮上性と沈降性の何れの性質のものでも用いることができる。
【００１５】
濾過部は、生物反応部を通過した処理水の濾過を行う部分であり、生物反応部と同様に担体を用いたものを好適に使用することができ、用いる担体は、生物反応部と同じものでも異なるものでも良い。この濾過部の底部に配置した散気管は、通常状態では空気泡の吐出を行うことなく、担体が静止状態を保って濾過処理を行い易い環境を維持させるが、継続して濾過処理を行っていると担体に生物膜が厚く堆積するので、定期的に空気泡を吐出させて担体の攪拌を行い、担体から生物膜を剥離するように使用する。剥離した生物膜は、洗浄排水引き抜き管により引き抜いて洗浄排水移送管により単独処理浄化槽の嫌気処理部または沈殿分離室へ移送することが好ましい。
【００１６】
単独処理浄化槽と合併処理化装置との配管接続は、前記単独処理浄化槽の消毒室の直前と前記合併処理化装置の流入口とを接続し、また前記合併処理化装置の流出口と前記単独処理浄化槽の消毒室を接続することにより行う。前記単独処理浄化槽の流入口には、浴槽排水以外の屎尿，台所排水および洗濯排水等を流入させる配管を設ける。これは、浴槽排水が他の生活雑排水と比較して汚れが少なく、量が多いために、単独処理浄化槽および合併処理化装置を通過させることなく、直接系外へ放流しても良いからである。更に好ましくは、浴槽排水用の浴槽排水配管を別に設け、浴槽排水のみは合併処理化装置に直接流入させて処理するか、または単独処理浄化槽の消毒室を通過させて消毒滅菌してから系外へ放流するようにしても良い。
【００１７】
浴槽排水配管には、流量調整弁を設けることが好ましく、この流量調整弁により浴槽排水を合併処理化装置に流入させる際に流入量変動を小さくし生物反応部の好気処理を効率良く行ったり、合併処理化装置の消毒槽を通過させる処理水の流入量変動を小さくし、消毒槽に流入した処理水の消毒滅菌を効率良く行うために使用する。
【００１８】
また、合併処理化装置には、その合併処理化装置と一体化させた流量調整槽まは合併処理化装置と配管接続される別体の流量調整槽を設けることが好ましい。この流量調整槽は、生物処理を行う槽への処理水の流入量変動を小さくし、好気処理を効率良く行うために使用する。
【００１９】
ところで、洗濯排水は浴槽排水よりも汚れの量が多いものの、台所排水に比べて少ない。そこで、洗濯排水も前記浴槽排水用の浴槽排水配管に流入させて浴槽排水と同様に既設の単独処理浄化槽を通さず、合併処理化装置に流入させて処理し、または、消毒滅菌して放流することが好ましい。但し、洗濯排水を浴槽排水配管に流入させる場合には、前記流量調整弁は、洗濯排水が浴槽排水配管に流入する位置より上流側に設置し、洗濯排水が流量調整弁を通過しないようにすることが好ましい。これは、洗濯排水は流量調整の必要があるほどの水量の変動が少なく、素早い排水を行い、洗濯，すすぎ，脱水などの複数工程を有する洗濯の時間を少しでも短くするためである。
【００２０】
第１の実施の形態
図１は、本発明の第１の実施の形態の合併処理浄化槽であり、（ａ）は平面と配管を示す図、（ｂ）は縦断側面と配管を示す図である。
【００２１】
単独処理浄化槽１は、既設のものであり、その内部構造は、上流側から第１流入口２，第１嫌気処理室１２，第２嫌気処理室１３，沈殿室５，消毒室６，第１流出口１０を備え、消毒槽６には消毒剤容器１１を設置している。このこの単独処理浄化槽１は、合併処理可能な合併処理浄化槽の一部に利用するために、既設の単独処理浄化槽における接触曝気室に設けられている散気部材からの空気供給を停止しとて第２嫌気処理室１３に改造したものである。
【００２２】
合併処理化装置２０は、その内部に、生物反応部２１および濾過部２２を備えた生物濾過槽２３を設け、生物反応部２１および濾過部２２の下部には、散気部材２４，２５を設けている。生物反応槽２１の下部に設けた散気部材２４は、好気処理を行うために使用するものであり、常に空気泡を吐出させるが、濾過部２２の下部に設けた散気部材２５は、生物膜の剥離を行うときに使用するもので、１日１回の空気吐出を１〜３０分程度行う。また、濾過部２２の下流側には、処理水貯留部２６を設ける。
【００２３】
単独処理浄化槽１と合併処理化装置２０との配管接続は、単独処理浄化槽１の沈殿室５から移流管２７を経由して合併処理化装置２０の第２流入口２８に流入させるように接続する。また、合併処理化装置２０の第２流出口２９と単独処理浄化槽１の消毒室６を移流管３０により接続する。そして、合併処理化装置２０の濾過部２２の底部に開口する洗浄排水引き抜き管３１は、移送ポンプ３２と洗浄排水移送管３３を介して単独処理浄化槽１の第１嫌気処理室１２に接続する。
【００２４】
ここで、汚水（処理水）の流れについて説明する。家庭から排出される屎尿，台所排水，洗面排水（以下、まとめて排水ａと言う）および洗濯排水は、単独処理浄化槽１の第１流入口２から第１嫌気処理室１２へ流入させて固液分離および嫌気処理を行い、空気供給を停止した第２嫌気処理室１３にて再度の固液分離および嫌気処理を行う。そして、第２嫌気処理室１３を通過した処理水は、沈殿室５内で固形分を沈殿分離した後に移流管２７へ流入する。
【００２５】
移流管２７に流入した処理水は、第２流入口２８から合併処理化装置２０の生物濾過槽２３に流入する。この生物濾過槽２３では、生物反応部２１において散気部材２４から吐出する空気泡によって処理水を好気処理し、その後、濾過部２２において固形物質の除去を行い、処理水貯留部２６へ移流する。処理水貯留部２６に移流した処理水は、第２流出口２９から移流管３０を通して単独処理浄化槽１の消毒室１６へ流入させ、ここで消毒滅菌処理を行った後に第１流出口１０から放流する。
【００２６】
生物濾過槽２３の濾過部２２は、継続して濾過処理を行うと、担体に生物膜が厚く堆積して閉塞するので、定期的に散気部材２５から空気泡を吐出させて担体を攪拌して該担体から生物膜を剥離させる。剥離した生物膜は、移送ポンプ３２を稼働させることで、洗浄排水引き抜き管３１により引き抜き、洗浄排水移送管３３を介して第１嫌気処理室１２へ返送する。
【００２７】
このような合併処理浄化槽によれば、既設の単独処理浄化槽１を有効活用して合併処理浄化槽を構成することができる。
【００２８】
第２の実施の形態
図２は、本発明の第２の実施の形態における合併処理浄化槽の平面および配管を示す図である。この実施の形態は、図１に示した第１の実施の形態における合併処理浄化槽における移流管２７の途中に浴槽排水配管３４を接続した構成である。その他の構成は、第１の実施の形態と同様であるので、同一符号を付して重複する説明を省略する。
【００２９】
この合併処理浄化槽は、排水ａおよび洗濯排水の外に多量の浴槽排水を浄化処理することができるように構成したものである。
【００３０】
浴槽排水は、汚れが比較的少ない多量の排水量となる特徴がある。この多量の浴槽排水を単独処理浄化槽１の嫌気処理室１２，１３に流し込むと排水ａの嫌気処理が不十分になる恐れがある。しかし、この実施の形態においては、汚れが少ない浴槽排水は、単独処理浄化槽１を通過させずに、移流管２７から合併処理化装置２０へ流入させるようにしたので、単独処理浄化槽１における処理を阻害せずに合併処理することができる。
【００３１】
第３の実施の形態
図３は、本発明の第３の実施の形態における合併処理浄化槽の平面および配管を示す図である。この実施の形態は、図２に示した第２の実施の形態の合併処理浄化槽における浴槽排水配管３４の途中に洗濯排水配管３５を接続した構成である。その他の構成は、第２の実施の形態と同様であるので、同一符号を付して重複する説明を省略する。
【００３２】
この合併処理浄化槽によれば、洗濯排水を排水ａとは別の排水配管に流して処理することができる。
【００３３】
第４の実施の形態
図４は、本発明の第４の実施の形態における合併処理浄化槽の平面および配管を示す図である。この実施の形態は、図２に示した第２の実施の形態における合併処理浄化槽における浴槽排水配管３４の途中に流量調整弁３６を接続した構成である。その他の構成は、第２の実施の形態と同様であるので、同一符号を付して重複する説明を省略する。
【００３４】
浴槽排水は、数分間に約２００〜３００リットルの多量の排水を発生させる。そのために、生物濾過槽２３の容量を十分な大きに確保されていない場合には、処理が不十分な処理水をそのまま放流することになりかねない。
【００３５】
そこで、この実施の形態の合併処理浄化槽は、浴槽排水量を生物濾過槽２３の容量に見合った量になるように流量調整弁３６によって制限することにより、生物濾過槽２３において安定した浄化処理を行うことができるようにしている。
【００３６】
第５の実施の形態
図５は、本発明の第５の実施の形態における合併処理浄化槽の平面および配管を示す図である。この実施の形態は、図３に示した第３の実施の形態における合併処理浄化槽における浴槽排水配管３４の途中に流量調整弁３７を接続した構成である。その他の構成は、第３の実施の形態と同様であるので、同一符号を付して重複する説明を省略する。
【００３７】
この実施の形態において、流量調整弁３７は、浴槽排水配管３４における洗濯排水配管３５の接続合流位置よりも上流に設け、洗濯排水が流量調整弁３７により制限されないようにしている。
【００３８】
洗濯排水は、電気洗濯機（図示省略）の機能や排水配管系の関係から制限することなく取り込んで浄化処理することができるようにすることが好ましい。この観点で、この実施の形態の合併処理浄化槽は好適である。
【００３９】
第６の実施の形態
図６は、本発明の第６の実施の形態における合併処理浄化槽の平面および配管を示す図である。この実施の形態は、図２に示した第２の実施の形態または図３に示した第３の実施の形態の合併処理浄化槽における合併処理化装置２０に流量調整槽３８を設け、この流量調整槽３８に貯留した汚水をポンプ３９によって生物濾過槽２３の処理能力に応じた流量で該生物濾過槽２３に移流するようにした構成である。その他の構成は、第２および第３の実施の形態と同様であるので、同一符号を付して重複する説明を省略する。
【００４０】
この合併処理浄化槽によれば、排水ａおよび洗濯排水あるいは浴槽排水を流量を制限することなく安定して浄化処理することができる
第７の実施の形態
図７は、本発明の第７の実施の形態における合併処理浄化槽の平面および配管を示す図である。この実施の形態は、図６に示した第６の実施の形態の合併処理浄化槽の合併処理化装置２０における流量調整槽３８を別体に形成して設置し、移流管２７から移流する処理水を第３流入口４０から流量調整槽３８に流入させて貯留し、処理水をポンプ３８によって移流管４１を介して第２流入口２８から生物濾過槽２３に移流するようにした構成である。その他の構成は、第６の実施の形態と同様であるので、同一符号を付して重複する説明を省略する。
【００４１】
この実施の形態では、流量調整槽３８を地中に埋設し、合併処理化装置２０は地上設置することが可能となり、施工費用を低減することができる。
【００４２】
その他の実施の形態
このような合併処理浄化槽は、浄化槽を新設するときには、新しい単独処理浄化槽を単独で新設し、またはこの新しい既存の単独処理浄化槽と合併処理化装置を組み合わせて使用することにより合併処理浄化槽を構成して新設することができるので、単独処理浄化槽と合併処理浄化槽の生産効率を高めることができる。
【００４３】
【発明の効果】
本発明は、既設または既存の単独処理浄化槽を利用して合併処理可能な合併処理浄化槽を構成するようにしているので、単独処理浄化槽を処分して新たに合併処理浄化槽を設置するよりも、安価に合併処理浄化槽を提供することが可能となり、また、単独処理浄化槽を処分する必要もなくなる。
【００４４】
また、単独処理浄化槽の消毒室を利用することにより、単独処理浄化槽から系外へ放出するときに、既設の配管をそのまま利用することができ、合併化処理装置に消毒槽を設ける必要がなく該合併化処理装置をコンパクトに構成することができる。
【００４５】
更に、単独処理浄化槽の接触曝気室を嫌気処理部に改造することにより、第１嫌気処理部と第２嫌気処理部とを有するようにすることで、第１嫌気処理部にて固液分離、嫌気処理をした上に、第２嫌気処理部にて再度固液分離、嫌気処理ができるので、汚泥貯留能力が向上し、屎尿以外の台所排水、洗濯排水などの流入水が増えても、汚泥引き抜き頻度の増加を軽減することができる。また、単独処理浄化槽に接続した合併処理化装置の生物濾過槽から洗浄排水を引き抜いて第１嫌気処理部に洗浄排水移送管により返送できるようにすることで、生物濾過槽にて剥離して沈殿する生物膜を第１嫌気処理部に戻すことができ、生物濾過槽での閉塞を防止できる。
また、既設単独処理浄化槽の沈殿分離室に設置されていた接触材を不規則充填の嫌気濾材と入れ替えて前記第２嫌気処理部を構成することで、空気で強制的に攪拌しない嫌気処理法において処理水が拡散し易くなり室内をより広く有効に使うことができる。
また、沈殿分離室と接触曝気室と消毒室を備えた既設単独浄化槽を、前記沈殿分離室に嫌気濾材を充填して第１嫌気処理部に変更し、前記接触曝気室を前記第１嫌気処理部からの排水につき再度の固液分離および嫌気処理を行う第２嫌気処理部に変更することができ、既設単独浄化槽を有効に利用して、それに合併処理化装置を接続することで第１嫌気処理部と第２嫌気処理部にて個々に固液分離、嫌気処理ができる合併処理浄化槽を提供できる。
更に、沈殿分離室と接触曝気室と沈殿室と消毒室を備えた既設単独浄化槽を、前記沈殿分離室に嫌気濾材を充填して第１嫌気処理部に変更し、前記接触曝気室を空気供給停止にして前記第１嫌気処理部からの排水につき再度の固液分離および嫌気処理を行う第２嫌気処理部に変更することができ、既設単独浄化槽を有効に利用して、それに合併処理化装置を接続することで第１嫌気処理部と第２嫌気処理部にて個々に固液分離、嫌気処理ができる合併処理浄化槽を提供できる。
【００４６】
また、浴槽排水配管を別配管にすることにより、他の生活雑排水に比較して量が多いために浄化処理を不安定にしていた浴槽排水を、直接または合併処理化装置による処理のみまたは消毒滅菌のみを行って系外に放出するようにすることができ、浄化処理を安定に行なうことができる。
【００４７】
更に、浴槽排水を単独処理浄化槽を通過せず直接合併処理化装置に流入あるいは直接放出あるいは消毒滅菌のみを行って系外に放出するようにすれば、単独処理浄化槽の汚泥の流出を防ぐことができると共に、生物濾過処理を効率的に行うことができるので、生物濾過槽の容量をコンパクトにすることができ、システム全体を小型化することが可能となる。
【００４８】
また、浴槽排水配管に流量調整弁を設けることにより、合併処理化装置の生物濾過槽あるいは消毒槽を大きくする必要がなく、効率良く排水を生物濾過処理あるいは消毒滅菌することができる。
【００４９】
更に、合併処理化装置に流量調整槽を設けた場合には、安定した浄化処理を行うことができ、特に合併処理化装置と流量調整槽とを配管接続する構成にすれば、合併処理化装置を地上設置することで施工費用を低く抑えることが可能となる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態の合併処理浄化槽であり、（ａ）は平面と配管を示す図、（ｂ）は縦断側面と配管を示す図である。
【図２】本発明の第２の実施の形態における合併処理浄化槽の平面および配管を示す図である。
【図３】本発明の第３の実施の形態における合併処理浄化槽の平面および配管を示す図である。
【図４】本発明の第４の実施の形態における合併処理浄化槽の平面および配管を示す図である。
【図５】本発明の第５の実施の形態における合併処理浄化槽の平面および配管を示す図である。
【図６】本発明の第６の実施の形態における合併処理浄化槽の平面および配管を示す図である。
【図７】本発明の第７の実施の形態における合併処理浄化槽の平面および配管を示す図である。
【図８】分離接触曝気方式の単独処理浄化槽を示す縦断側面図である。
【符号の説明】
１…単独処理浄化槽、２…第１流入口、５…沈殿室、６…消毒室、１０…第１流出口、１１…消毒剤容器、１２…第１嫌気処理室、１３…第２嫌気処理室、２０…合併処理化装置、２１…生物反応部、２２…濾過部、２３…生物濾過槽、２６…沈殿槽、２７，３０…移流管。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a merged treatment septic tank.
[0002]
[Prior art]
As shown in FIG. 8, the separation contact aeration type single processing septic tank that performs the purification process of manure is allowed to flow into the precipitation separation chamber 3 from the inlet 2 of the single processing septic tank 1 for solid-liquid separation and anaerobic processing. Go to contact aeration chamber 4. In the contact aeration chamber 4, the advected treated water is agitated by air bubbles diffused from the diffuser tube 7 and brought into contact with the contact material 8 to gradually remove the nutrient substrate by oxidation. Since the biofilm accumulates thickly and closes as the contact material 8 continues stirring, the biofilm is peeled off by periodically discharging air bubbles from the backwash tube 9. The treated water that has passed through the contact aeration chamber 4 is transferred to the sedimentation chamber 5, where the solids are separated by precipitation, and the supernatant is transferred to the disinfection chamber 6 and sterilized, and then discharged from the outlet 10 to the outside of the system. To be released. Reference numeral 11 denotes a disinfectant container that contains the disinfectant and is installed in the disinfecting chamber 6.
[0003]
[Problems to be solved by the invention]
However, in the single treatment septic tank, the type of sewage to be treated is limited to manure, and it cannot treat household wastewater such as kitchen wastewater, laundry wastewater, bathroom wastewater, and bathtub wastewater. Such problems can be solved by removing the existing single processing septic tank and installing a new merged processing septic tank. However, not only the construction cost becomes high, but many single processing septic tanks are made of FRP. Therefore, a new problem also arises regarding disposal of the single processing septic tank that is no longer necessary. Moreover, when a single treatment septic tank is buried without being dug up, a problem concerning disposal is not generated, but another problem that the land cannot be effectively used is caused.
[0004]
The present invention has been made in view of such problems, and solves the disposal problem of the single processing septic tank when configuring the merged processing septic tank by effectively utilizing the existing single processing septic tank, and newly It aims at providing the merged processing septic tank which can be comprised cheaply rather than purchasing a merged processing septic tank.
[0005]
[Means for Solving the Problems]
The present invention provides a single treatment septic tank having a first anaerobic treatment unit and a second anaerobic treatment unit and a disinfection chamber for performing solid-liquid separation and anaerobic treatment again for waste water from the first anaerobic treatment unit, and a biological filtration tank. A merger treatment apparatus provided, and connecting the immediately before the disinfection chamber of the single treatment septic tank and the inlet of the merger treatment apparatus, the outlet of the merger treatment apparatus and the sterilization chamber of the single treatment septic tank A drain for flowing the waste water into the inlet of the single treatment septic tank, and the washing waste water for extracting the washing waste water from the biological filtration tank of the combined treatment apparatus and returning it to the first anaerobic treatment section A transfer pipe is provided , and the bathtub drainage pipe is connected immediately before the inflow port of the merger processing apparatus, or is connected to the disinfection chamber of the single treatment septic tank, and a flow regulating valve is provided in the middle of the bathtub drainage pipe. Features.
Further, the second anaerobic treatment unit is characterized in that the contact material installed in the contact aeration chamber of the existing single treatment septic tank is replaced with an irregularly filled anaerobic filter material.
The present invention changes an existing single-treatment septic tank having a precipitation separation chamber and a contact aeration chamber to a first anaerobic treatment section by filling the precipitation separation chamber with an anaerobic filter medium, and the contact aeration chamber is changed to the first anaerobic treatment. A single-treatment septic tank that is changed to a second anaerobic treatment unit that performs solid-liquid separation and anaerobic treatment again with respect to the waste water from the unit, and a combined treatment apparatus equipped with a biological filtration tank, Connect immediately before the disinfection chamber and the inlet of the merger treatment apparatus, connect the outlet of the merger treatment apparatus and the disinfection chamber of the single treatment septic tank, and allow wastewater to flow into the inlet of the single treatment septic tank the pipe for providing a flow of the merge pull out the washing waste water from a biological filtration tank of the processing apparatus provided with a washing water discharge transfer tube for returning to the first anaerobic treatment unit, the combined treatment apparatus bathtub drain pipe Connect or just before the entrance Connected to the sterilization chamber of the single processing septic tank, characterized in that a flow control valve in the middle of the tub drain pipe.
The present invention changes an existing single-treatment septic tank having a precipitation separation chamber, a contact aeration chamber, a precipitation chamber, and a disinfection chamber into a first anaerobic treatment section by filling the precipitation separation chamber with an anaerobic filter medium, and the contact aeration chamber. Of the single treatment septic tank which is changed to the second anaerobic treatment part which performs solid-liquid separation and anaerobic treatment again for the drainage from the first anaerobic treatment part with the air supply stopped, and the combined treatment with the biological filtration tank An apparatus, and connected immediately before the sterilization chamber of the single treatment septic tank and the inlet of the merger treatment apparatus, connecting the outlet of the merger treatment apparatus and the sterilization chamber of the single treatment septic tank, A pipe for allowing wastewater to flow into the inlet of the single treatment septic tank is provided, and a washing drainage transfer pipe is provided for extracting the washing wastewater from the biological filtration tank of the combined treatment apparatus and returning it to the first anaerobic treatment section , Bath drainage piping is combined Connect immediately before the inlet, or connected to the sterilization chamber of the single processing septic tank, characterized in that a flow control valve in the middle of the tub drain pipe.
[0006]
The biological filtration tank includes a biological reaction part having a diffuser pipe disposed at the bottom and a filtration part, and is provided with a washing drainage transfer pipe for returning the water passing through the filtration part to the anaerobic treatment part.
[0009]
Alternatively, the merge processing apparatus is provided with a flow rate adjusting tank.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The single treatment septic tank according to the present invention includes a first anaerobic treatment unit, a second anaerobic treatment unit, and a disinfection chamber, and uses a precipitation aeration chamber and a contact aeration chamber and a disinfection chamber in the existing or existing single treatment septic tank with the air supply stopped. And configure. Specifically, as explained in the prior art, a single treatment septic tank having an inlet and an outlet and having a precipitation separation chamber, a contact aeration chamber, a precipitation chamber, and a disinfection chamber from the upstream side is preferably used. can do.
[0011]
When the first anaerobic treatment unit is not filled with a filter medium or the like as in the precipitation separation chamber of the single treatment septic tank described in the prior art, the first anaerobic treatment unit fills the precipitation separation chamber of the existing single treatment septic tank with the anaerobic filter medium. It is preferable to configure. More preferably, the anaerobic filter medium is irregularly packed. This is because the anaerobic treatment method that does not forcibly agitate with air makes the treated water easier to diffuse and more effectively use the room more widely.
[0012]
Next, a 2nd anaerobic process part uses the aeration process chamber which stopped supply of air. The air diffuser installed in the aeration chamber may be removed, and if an aerobic filter (contact material) is installed in the aeration chamber, it may be removed, but it is preferably used as an anaerobic filter. To do. More preferably, it is replaced with an irregularly filled anaerobic filter medium. This is because, in many cases, the aerobic filter medium is regularly packed, and the anaerobic treatment method that does not forcibly stir with air makes it easier for the treated water to diffuse and the room to be used more effectively. Because.
[0013]
The combined treatment apparatus is not particularly limited as long as there is at least a biological filtration tank for performing an aerobic treatment. The biological filtration tank has a biological reaction section in which an aeration pipe is arranged at the bottom and an aeration pipe at the bottom as well. It is preferable that the filter is provided.
[0014]
The biological reaction part is a part that performs an aerobic treatment by discharging air bubbles from an air diffuser arranged at the bottom, and a part using a carrier can be suitably used. In addition, since the carrier referred to here makes it possible to hold a large number of microorganisms, it has a net-like cylindrical shape, a skeleton-like spherical shape, a flat shape, a small cylindrical shape, a corrugated plate shape, a tube shape, a fiber entangled shape, etc. Synthetic resin molded bodies, synthetic resin molded bodies having closed cells or open cells, inorganic bodies such as anthracite (anthracite), silica sand, and ceramics can be suitably used. In addition, the carrier can be used with any property of floatability and sedimentation.
[0015]
The filtration part is a part that filters the treated water that has passed through the biological reaction part, and a carrier using a carrier can be suitably used in the same manner as the biological reaction part. The carrier used is the same as the biological reaction part. But it can be different. The air diffuser arranged at the bottom of the filtration unit does not discharge air bubbles in the normal state, and maintains an environment in which the carrier is easy to perform the filtration process while maintaining the stationary state. Since the biofilm accumulates thickly on the carrier, air bubbles are periodically discharged to stir the carrier, and the biofilm is peeled off from the carrier. The peeled biofilm is preferably drawn out by a washing drainage pipe and transferred to an anaerobic treatment section or a precipitation separation chamber of a single treatment septic tank by a washing drainage transfer pipe.
[0016]
The pipe connection between the single treatment septic tank and the merger treatment apparatus connects the immediately before the sterilization chamber of the single treatment septic tank and the inlet of the merger treatment apparatus, and the outlet of the merger treatment apparatus and the single treatment. This is done by connecting the sterilization chamber of the septic tank. At the inlet of the single treatment septic tank, a pipe through which manure other than bathtub drainage, kitchen wastewater, laundry wastewater and the like flow is provided. This is because the bathtub drainage is less contaminated than other household wastewater, and the amount is large, so it can be discharged directly outside the system without passing through the single treatment septic tank and the combined treatment equipment. is there. More preferably, a separate bathtub drain pipe is provided for bath drainage, and only the bathtub drainage is treated by directly flowing into the combined treatment apparatus, or passed through the disinfection chamber of a single treatment septic tank and then disinfected. You may make it discharge to.
[0017]
It is preferable to provide a flow rate adjustment valve in the bathtub drainage pipe, and when the bathtub drainage flows into the merger processing device with this flow rate adjustment valve, the flow rate fluctuation is reduced and the aerobic treatment of the biological reaction part is efficiently performed. It is used to reduce the fluctuation in the amount of treated water that passes through the disinfection tank of the combined treatment apparatus, and to efficiently disinfect and sterilize the treated water that has flowed into the disinfection tank.
[0018]
Further, the merger processing apparatus is preferably provided with a flow rate adjusting tank integrated with the merger processing apparatus or a separate flow rate adjusting tank connected to the merged processing apparatus. This flow rate adjustment tank is used to reduce the variation in the amount of treated water flowing into the biological treatment tank and efficiently perform the aerobic treatment.
[0019]
By the way, although the amount of dirt is larger than that of bathtub drainage, the amount of washing wastewater is less than that of kitchen drainage. Therefore, the washing wastewater is also allowed to flow into the bathtub drainage pipe for the bathtub drainage, not to pass through the existing single-treatment septic tank as in the case of the bathtub drainage, but to be flowed into the combined treatment apparatus and treated, or disinfected and discharged. It is preferable. However, when washing wastewater flows into the bathtub drainage pipe, the flow rate adjusting valve is installed upstream from the position where the laundry drainage flows into the bathtub drainage pipe so that the washing drainage does not pass through the flow rate regulating valve. It is preferable. This is because the washing drainage has a small amount of water fluctuation so that the flow rate needs to be adjusted, the drainage is performed quickly, and the washing time having a plurality of steps such as washing, rinsing and dehydration is shortened as much as possible.
[0020]
First Embodiment FIG. 1 is a merged treatment septic tank according to a first embodiment of the present invention, in which (a) shows a plane and piping, and (b) shows a vertical side surface and piping. .
[0021]
The single treatment septic tank 1 is an existing one, and the internal structure thereof is the first inlet 2, the first anaerobic treatment chamber 12, the second anaerobic treatment chamber 13, the sedimentation chamber 5, the disinfection chamber 6, the first from the upstream side. An outflow port 10 is provided, and a disinfectant container 11 is installed in the disinfection tank 6. This single processing septic tank 1 is used for a part of the merged processing septic tank that can be merged, so that the air supply from the air diffuser provided in the contact aeration chamber in the existing single processing septic tank is stopped. The second anaerobic treatment chamber 13 is modified.
[0022]
The merger processing apparatus 20 is provided with a biological filtration tank 23 provided with a biological reaction part 21 and a filtration part 22 inside, and aeration members 24 and 25 are provided below the biological reaction part 21 and the filtration part 22. ing. The aeration member 24 provided at the lower part of the biological reaction tank 21 is used for performing an aerobic treatment, and always discharges air bubbles, but the aeration member 25 provided at the lower part of the filtration unit 22 It is used when peeling biofilms, and air discharge is performed once a day for about 1 to 30 minutes. A treated water storage unit 26 is provided on the downstream side of the filtration unit 22.
[0023]
The pipe connection between the single processing septic tank 1 and the merger processing apparatus 20 is connected so as to flow from the settling chamber 5 of the single processing septic tank 1 to the second inlet 28 of the combined processing apparatus 20 via the transfer pipe 27. . Further, the second outlet 29 of the combined treatment apparatus 20 and the disinfection chamber 6 of the single treatment septic tank 1 are connected by the advection pipe 30. And the washing | cleaning waste_water | drain extraction pipe | tube 31 opened to the bottom part of the filtration part 22 of the merger processing apparatus 20 is connected to the 1st anaerobic processing chamber 12 of the independent treatment septic tank 1 through the transfer pump 32 and the washing | cleaning waste_water | drain transfer pipe 33.
[0024]
Here, the flow of sewage (treated water) will be described. Human waste, kitchen wastewater, bathroom wastewater (hereinafter collectively referred to as wastewater a) and laundry wastewater discharged from the home flow into the first anaerobic treatment chamber 12 from the first inlet 2 of the single treatment septic tank 1 and are solid-liquid. Separation and anaerobic processing are performed, and solid-liquid separation and anaerobic processing are performed again in the second anaerobic processing chamber 13 where the air supply is stopped. Then, the treated water that has passed through the second anaerobic treatment chamber 13 flows into the advection pipe 27 after the solid content is precipitated and separated in the precipitation chamber 5.
[0025]
The treated water that has flowed into the advection pipe 27 flows into the biological filtration tank 23 of the combined treatment apparatus 20 from the second inlet 28. In this biological filtration tank 23, the treated water is subjected to aerobic treatment with air bubbles discharged from the diffuser member 24 in the biological reaction unit 21, and then the solid substance is removed in the filtration unit 22, and then transferred to the treated water storage unit 26. To do. The treated water transferred to the treated water storage unit 26 flows from the second outlet 29 into the sterilization chamber 16 of the single treatment septic tank 1 through the convection pipe 30 and is discharged from the first outlet 10 after performing sterilization treatment. To do.
[0026]
If the filtration unit 22 of the biological filtration tank 23 continuously performs the filtration process, the biofilm is deposited thickly on the carrier and is blocked, so that air bubbles are periodically discharged from the air diffuser 25 to stir the carrier. To release the biofilm from the carrier. The peeled biofilm is extracted by the cleaning drainage pipe 31 by operating the transfer pump 32 and returned to the first anaerobic treatment chamber 12 via the cleaning drainage transfer pipe 33.
[0027]
According to such a merger treatment septic tank, the merged treatment septic tank can be configured by effectively utilizing the existing single treatment septic tank 1.
[0028]
Second Embodiment FIG. 2 is a diagram showing a plane and piping of a merged treatment septic tank according to a second embodiment of the present invention. In this embodiment, a bathtub drain pipe 34 is connected in the middle of the advection pipe 27 in the merged treatment septic tank in the first embodiment shown in FIG. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and redundant description is omitted.
[0029]
This merged treatment septic tank is configured to be able to purify a large amount of bathtub drainage in addition to drainage a and washing drainage.
[0030]
Bath drainage is characterized by a large amount of drainage with relatively little dirt. If this large amount of bathtub drainage is poured into the anaerobic treatment chambers 12 and 13 of the single treatment septic tank 1, the anaerobic treatment of the drainage a may be insufficient. However, in this embodiment, since the bathtub drainage with less dirt is allowed to flow from the advection pipe 27 to the merger treatment apparatus 20 without passing through the single treatment septic tank 1, the treatment in the single treatment septic tank 1 is performed. Mergers can be processed without hindrance.
[0031]
Third Embodiment FIG. 3 is a view showing a plane and piping of a merged treatment septic tank according to a third embodiment of the present invention. This embodiment has a configuration in which a washing drainage pipe 35 is connected in the middle of a bathtub drainage pipe 34 in the merged processing septic tank of the second embodiment shown in FIG. Since other configurations are the same as those of the second embodiment, the same reference numerals are given and redundant description is omitted.
[0032]
According to this merged treatment septic tank, it is possible to treat the laundry wastewater by flowing it into a drainage pipe different from the drainage a.
[0033]
Fourth Embodiment FIG. 4 is a view showing a plane and piping of a merged treatment septic tank according to a fourth embodiment of the present invention. This embodiment has a configuration in which a flow rate adjustment valve 36 is connected in the middle of a bathtub drainage pipe 34 in the merged processing septic tank in the second embodiment shown in FIG. Since other configurations are the same as those of the second embodiment, the same reference numerals are given and redundant description is omitted.
[0034]
Bath drainage generates a large amount of drainage of about 200 to 300 liters in a few minutes. Therefore, when the capacity of the biological filtration tank 23 is not secured sufficiently, treated water that is insufficiently treated may be discharged as it is.
[0035]
Therefore, the combined treatment septic tank of this embodiment performs a stable clarification process in the biological filtration tank 23 by limiting the amount of drainage in the bathtub with the flow rate adjustment valve 36 so as to match the capacity of the biological filtration tank 23. To be able to.
[0036]
Fifth Embodiment FIG. 5 is a diagram showing a plane and piping of a merged treatment septic tank in the fifth embodiment of the present invention. In this embodiment, a flow rate adjustment valve 37 is connected in the middle of the bathtub drainage pipe 34 in the merged processing septic tank in the third embodiment shown in FIG. Since other configurations are the same as those of the third embodiment, the same reference numerals are given and redundant descriptions are omitted.
[0037]
In this embodiment, the flow rate adjustment valve 37 is provided upstream of the connection / confluence position of the wash drainage pipe 35 in the bathtub drainage pipe 34 so that the wash drainage is not restricted by the flow rate adjustment valve 37.
[0038]
It is preferable that the washing waste water can be taken in and purified without being restricted due to the function of the electric washing machine (not shown) and the relation of the drain piping system. From this viewpoint, the merged treatment septic tank of this embodiment is suitable.
[0039]
Sixth Embodiment FIG. 6 is a diagram showing a plane and piping of a merged treatment septic tank according to a sixth embodiment of the present invention. In this embodiment, a flow rate adjustment tank 38 is provided in the merger processing apparatus 20 in the merger processing septic tank of the second embodiment shown in FIG. 2 or the third embodiment shown in FIG. The configuration is such that the sewage stored in the tank 38 is transferred to the biological filtration tank 23 by the pump 39 at a flow rate corresponding to the treatment capacity of the biological filtration tank 23. Since other configurations are the same as those of the second and third embodiments, the same reference numerals are given and redundant descriptions are omitted.
[0040]
According to this merged treatment septic tank, the seventh embodiment capable of stably purifying the waste water a and the washing waste water or the bathtub waste water without restricting the flow rate. FIG. 7 shows the seventh embodiment of the present invention. It is a figure which shows the plane and piping of the merger processing septic tank in a form. In this embodiment, the flow rate adjustment tank 38 in the merger processing apparatus 20 of the merger processing septic tank of the sixth embodiment shown in FIG. Is introduced into the flow rate adjustment tank 38 from the third inlet 40 and stored, and the treated water is transferred from the second inlet 28 to the biological filtration tank 23 via the transfer pipe 41 by the pump 38. Other configurations are the same as those of the sixth embodiment, and thus the same reference numerals are given and redundant description is omitted.
[0041]
In this embodiment, the flow rate adjustment tank 38 is buried in the ground, and the merger processing apparatus 20 can be installed on the ground, so that the construction cost can be reduced.
[0042]
Other Embodiments When a septic tank is newly established, such a merged septic tank can be merged by installing a new single septic tank alone or by combining this new existing septic tank with a combined processing unit. Since a processing septic tank can be constructed and newly installed, the production efficiency of the single processing septic tank and the merged processing septic tank can be increased.
[0043]
【The invention's effect】
Since the present invention constitutes a merged processing septic tank that can be merged using an existing or existing single processing septic tank, it is cheaper than disposing of the single processing septic tank and newly installing a combined processing septic tank. It is possible to provide a combined treatment septic tank, and there is no need to dispose of a single treatment septic tank.
[0044]
In addition, by using the disinfection chamber of the single processing septic tank, when discharging from the single processing septic tank out of the system, the existing piping can be used as it is, and there is no need to provide a disinfection tank in the merged processing apparatus. The merger processing apparatus can be configured compactly.
[0045]
Furthermore, by remodeling the contact aeration chamber of the single treatment septic tank into an anaerobic treatment unit, by having a first anaerobic treatment unit and a second anaerobic treatment unit, solid-liquid separation in the first anaerobic treatment unit, After anaerobic treatment, solid-liquid separation and anaerobic treatment can be performed again at the second anaerobic treatment section, improving the sludge storage capacity, and even if the influent water such as kitchen wastewater and laundry wastewater increases, sludge An increase in the extraction frequency can be reduced. In addition, it is possible to pull out the washing wastewater from the biological filtration tank of the combined treatment apparatus connected to the single treatment septic tank and return it to the first anaerobic treatment section by the washing wastewater transfer pipe, so that it separates and precipitates in the biological filtration tank. The biofilm to be returned can be returned to the first anaerobic treatment section, and blockage in the biological filtration tank can be prevented.
Further, in the anaerobic treatment method in which the second anaerobic treatment part is configured by replacing the contact material installed in the sedimentation separation chamber of the existing single-treatment septic tank with an irregularly filled anaerobic filter medium, thereby forcibly agitating with air. The treated water is easy to diffuse and the room can be used more effectively.
Further, the existing single septic tank provided with a precipitation separation chamber, a contact aeration chamber, and a disinfection chamber is changed to a first anaerobic treatment section by filling the precipitation separation chamber with an anaerobic filter medium, and the contact aeration chamber is changed to the first anaerobic treatment. The first anaerobic unit can be changed to the second anaerobic treatment unit that performs solid-liquid separation and anaerobic treatment again with respect to the drainage from the unit, and by effectively using the existing single septic tank and connecting the combined treatment device to it. It is possible to provide a combined treatment septic tank capable of performing solid-liquid separation and anaerobic processing individually in the processing unit and the second anaerobic processing unit.
Furthermore, the existing single septic tank equipped with a precipitation separation chamber, a contact aeration chamber, a precipitation chamber, and a disinfection chamber is changed to the first anaerobic treatment section by filling the precipitation separation chamber with an anaerobic filter medium, and the contact aeration chamber is supplied with air. The waste water from the first anaerobic treatment unit can be stopped and changed to a second anaerobic treatment unit that performs solid-liquid separation and anaerobic treatment again. Can be provided to provide a combined treatment septic tank capable of solid-liquid separation and anaerobic treatment individually in the first anaerobic treatment part and the second anaerobic treatment part.
[0046]
In addition, by using a separate bathtub drainage pipe, the bathtub drainage, which has been unstable due to its large volume compared to other household wastewater, can be treated directly or by disinfection only or by disinfection. Only the sterilization can be performed and discharged out of the system, and the purification treatment can be performed stably.
[0047]
Furthermore, if the wastewater from the bathtub does not pass through the single treatment septic tank, it flows directly into the combined treatment equipment, or is directly discharged or sterilized and discharged outside the system to prevent the sludge from flowing out of the single treatment septic tank. In addition, since the biological filtration process can be performed efficiently, the capacity of the biological filtration tank can be made compact, and the entire system can be miniaturized.
[0048]
Further, by providing a flow rate adjusting valve in the bathtub drainage pipe, it is not necessary to enlarge the biological filtration tank or the disinfection tank of the combined treatment apparatus, and the wastewater can be biologically filtered or sterilized efficiently.
[0049]
Furthermore, when the flow control tank is provided in the merger processing apparatus, stable purification treatment can be performed. In particular, if the merger processing apparatus and the flow control tank are configured to be connected by piping, the merger processing apparatus It is possible to keep the construction cost low by installing on the ground.
[Brief description of the drawings]
FIG. 1 is a merged treatment septic tank according to a first embodiment of the present invention, where (a) is a diagram showing a plane and piping, and (b) is a diagram showing a longitudinal side surface and piping.
FIG. 2 is a diagram showing a plane and piping of a merged treatment septic tank according to a second embodiment of the present invention.
FIG. 3 is a diagram showing a plane and piping of a merged treatment septic tank according to a third embodiment of the present invention.
FIG. 4 is a diagram showing a plane and piping of a merged treatment septic tank according to a fourth embodiment of the present invention.
FIG. 5 is a diagram showing a plane and piping of a merged treatment septic tank according to a fifth embodiment of the present invention.
FIG. 6 is a diagram showing a plane and piping of a merged treatment septic tank according to a sixth embodiment of the present invention.
FIG. 7 is a diagram showing a plane and piping of a merged treatment septic tank according to a seventh embodiment of the present invention.
FIG. 8 is a longitudinal side view showing a single treatment septic tank of a separation contact aeration method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Single processing septic tank, 2 ... 1st inflow port, 5 ... Settling chamber, 6 ... Disinfection chamber, 10 ... 1st outflow port, 11 ... Disinfectant container, 12 ... 1st anaerobic treatment chamber, 13 ... 2nd anaerobic treatment Chamber, 20 ... merger processing apparatus, 21 ... biological reaction part, 22 ... filtration part, 23 ... biological filtration tank, 26 ... sedimentation tank, 27, 30 ... advection pipe.

Claims

A single treatment septic tank having a first anaerobic treatment unit and a second anaerobic treatment unit and a disinfection chamber for performing solid-liquid separation and anaerobic treatment again for drainage from the first anaerobic treatment unit, and a combined treatment having a biological filtration tank And comprising
The just before the sterilization chamber of the single processing septic tank and the inlet of the combined treatment apparatus are connected, the outlet of the combined processing apparatus and the sterilization chamber of the single processing septic tank are connected, and the inlet of the single processing septic tank Provide piping to let the wastewater flow into
A cleaning wastewater transfer pipe is provided for extracting the cleaning wastewater from the biological filtration tank of the combined treatment apparatus and returning it to the first anaerobic treatment section ,
Connect the bathtub drainage pipe immediately before the inflow port of the combined treatment apparatus, or connect to the disinfection chamber of the single treatment septic tank,
A combined treatment septic tank, wherein a flow rate adjusting valve is provided in the middle of the bathtub drainage pipe .

2. The merged treatment septic tank according to claim 1, wherein the second anaerobic treatment unit replaces the contact material installed in the contact aeration chamber of the existing single treatment septic tank with an irregularly filled anaerobic filter medium.

An existing single-treatment septic tank having a precipitation separation chamber, a contact aeration chamber, and a disinfection chamber is changed to a first anaerobic treatment section by filling the precipitation separation chamber with an anaerobic filter medium, and the contact aeration chamber is changed to the first anaerobic treatment section. A single-treatment septic tank that is changed to a second anaerobic treatment unit that performs solid-liquid separation and anaerobic treatment again with respect to the waste water from, and a combined treatment apparatus equipped with a biological filtration tank,
The just before the sterilization chamber of the single processing septic tank and the inlet of the combined treatment apparatus are connected, the outlet of the combined processing apparatus and the sterilization chamber of the single processing septic tank are connected, and the inlet of the single processing septic tank Provide piping to let the wastewater flow into
A cleaning wastewater transfer pipe is provided for extracting the cleaning wastewater from the biological filtration tank of the combined treatment apparatus and returning it to the first anaerobic treatment section ,
Connect the bathtub drainage pipe immediately before the inflow port of the combined treatment apparatus, or connect to the disinfection chamber of the single treatment septic tank,
A combined treatment septic tank, wherein a flow rate adjusting valve is provided in the middle of the bathtub drainage pipe .

The existing single-treatment septic tank equipped with a sedimentation separation chamber, a contact aeration chamber, a sedimentation chamber, and a disinfection chamber is changed to the first anaerobic treatment section by filling the sedimentation separation chamber with an anaerobic filter medium, and the supply of air to the contact aeration chamber is stopped. A single treatment septic tank that is changed to a second anaerobic treatment unit that performs solid-liquid separation and anaerobic treatment again with respect to the waste water from the first anaerobic treatment unit, and a merger treatment apparatus equipped with a biological filtration tank. Prepared,
The just before the sterilization chamber of the single processing septic tank and the inlet of the combined treatment apparatus are connected, the outlet of the combined processing apparatus and the sterilization chamber of the single processing septic tank are connected, and the inlet of the single processing septic tank Provide piping to let the wastewater flow into
A cleaning wastewater transfer pipe is provided for extracting the cleaning wastewater from the biological filtration tank of the combined treatment apparatus and returning it to the first anaerobic treatment section ,
Connect the bathtub drainage pipe immediately before the inflow port of the combined treatment apparatus, or connect to the disinfection chamber of the single treatment septic tank,
A combined treatment septic tank, wherein a flow rate adjusting valve is provided in the middle of the bathtub drainage pipe .

In one of Claims 1-4, the said biological filtration tank is equipped with the biological reaction part and the filtration part which have arranged the diffuser pipe in the bottom part,
The combined septic tank is characterized in that the washing drainage transfer pipe returns the water passing through the filtration unit to the first anaerobic treatment unit.

The merged treatment septic tank according to claim 1, wherein a flow rate adjusting tank is provided in the merged treatment apparatus.