JP2004230299A

JP2004230299A - Waste water cleaning device

Info

Publication number: JP2004230299A
Application number: JP2003022675A
Authority: JP
Inventors: Ryoichi Okamoto; 良一岡本
Original assignee: Eiwa Kokudo Kankyo Kk
Current assignee: Eiwa Kokudo Kankyo Kk
Priority date: 2003-01-30
Filing date: 2003-01-30
Publication date: 2004-08-19
Anticipated expiration: 2023-01-30
Also published as: JP3699454B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waste water cleaning device with a plurality of cleaning treatment chambers whose insides can easily and swiftly be cleaned. <P>SOLUTION: This waste water cleaning device is provided with a plurality of cleaning treatment chambers 4 to 8 stepwise cleaning waste water exhausted from a toilet, a storage chamber 9 storing cleaning water introduced out from the lowermost stream cleaning treatment chamber 8 located on the lowermost stream part, and a cleaning water storage tank 2. The uppermost stream cleaning chamber 4 located on the uppermost stream part is provided with a suction port (opening part 40) for sucking waste water. Further, a returning means consisting of a returning passage 35 returning waste water inside the cleaning treatment chambers 5 to 8 arranged on the downstream side of the uppermost stream cleaning treatment chamber to the inside of the uppermost stream cleaning treatment chamber 4 and a purification water feeding means 46 for feeding the cleaning water inside the cleaning water storage tank 2 to the inside of the uppermost stream cleaning treatment chamber 4 are provided. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、トイレから排出された屎尿水等からなる排水を迅速かつ高度に浄化処理するとともに、必要に応じて浄化処理室の内部を容易に洗浄することが可能な排水浄化装置に関するものである。
【０００２】
【従来の技術】
従来、例えば特許文献１に示されるように、カキ殻を接触材として汚水をばっ気処理する第１ばっ気室と、同第１ばっ気室の溢水を多孔質の人工櫨材に接触させて嫌気分解処理を行う嫌気ろ床室と、同嫌気ろ床室で浄化された汚水を流入してカキ殻を接触材としてばっ気処理する第２ばっ気室と、同第２ばっ気室で浄化された水を流入し活性炭に接触させて脱色・脱臭の高度処理を行う仕上げ処理室からなり、しかも汚水を沈殿分離する沈殿分離室と、同沈殿分離された汚水の液体を流入して接触ばっ気する接触ばっ気室と、同接触ばっ気室で接触ばっ気処理した汚水を蓄えて第１ばっ気室に送り込む沈殿室とを第１ばっ気室に流入する汚水の前処理の室として設けた高度処理浄化槽が知られている。
【０００３】
【特許文献１】
特許第２７５６６５７号公報
【０００４】
【発明が解決しようとする課題】
上記特許文献１に示されるように、沈殿分離室、接触ばっ気室、第１ばっ気室、嫌気ろ床室、第２ばっ気室および仕上げ処理室が設けられた高度処理浄化槽からなる排水浄化装置によれば、トイレから排出された汚水等からなる排水を段階的に処理することにより、この排水を迅速かつ高度に浄化することができる。しかし、上記排水浄化装置を定期点検する際、またはイベント開催時等において臨時的に設置された排水浄化装置を移転する際等に、上記沈殿分離室および接触ばっ気室等からなる各浄化処理室内の排水を順次導出した後、それぞれ個別に洗浄する必要があるため、その作業が極めて煩雑であるとともに、洗浄作業に要する時間が長くなることが避けられないという問題があった。
【０００５】
本発明は、上記の点に鑑みてなされたものであり、洗浄作業を容易化することができる複数の浄化処理室を有する排水浄化装置を提供することを目的としている。
【０００６】
【課題を解決するための手段】
請求項１に係る発明は、トイレから排出された汚水等の汚泥成分を含有する排水を段階的に浄化する複数の浄化処理室と、その最下流部に位置する最下流浄化処理室から導出された浄化水を貯留する浄化水貯留室とを備えた排水浄化装置において、最上流部に位置する最上流浄化処理室に貯留水の吸引口を設けるとともに、上記最上流浄化処理室の下流側に配設された浄化処理室内の処理水を最上流浄化処理室内に還流させる還流手段と、上記浄化水貯留室内の浄化水を最上流浄化処理室内に供給する浄化水供給手段とを備えたものである。
【０００７】
上記構成によれば、排水浄化装置を定期点検する際等に、最上流浄化処理室の吸引口に排水吸引手段の吸引ホース等を挿入して排水を吸引することにより、上記最上流浄化処理室内の排水が順次外部に導出されるとともに、中流浄化処理室および最下流浄化処理室等からなる浄化処理室内の処理水を、上記還流手段により最上流浄化処理室内に還流させて吸引することにより、上記処理水が順次外部に導出され、かつこの最上流浄化処理室の内壁面に付着した汚泥成分等が上記浄化水供給手段から供給される洗浄水により効果的に洗浄されることになる。
【０００８】
請求項２に係る発明は、上記請求項１に記載された排水浄化装置において、浄化水貯留室内に貯留された浄化水の異常を検出する異常検出手段と、この異常検出手段により異常が検出された場合に、管理部に異常検出信号を送信する送信手段とを備えたものである。
【０００９】
上記構成によれば、異常検出手段から管理部に送信された異常検出信号に応じ、各浄化処理室内に収容された排水を外部に導出すべき状態にあるか否か等が適正に判別されることになる。
【００１０】
請求項３に係る発明は、上記請求項１また２に記載された排水浄化装置において、最上流浄化処理室と並列に排水貯留槽を設置するとともに、最上流浄化室内に収容された排水を上記排水貯留槽内に移送する移送手段を設けたものである。
【００１１】
上記構成によれば、最上流浄化処理室内に大量に排水が流入した場合、または最上流浄化処理室内に収容された排水を外部に導出すべき状態にある場合等に、上記移送手段を介して最上流浄化処理室内の排水を排水貯留槽内に移送することにより、排水の浄化機能を維持しつつ、上記最上流浄化処理室内の排水を外部に導出させる作業の回数を低減することが可能となる。
【００１２】
請求項４に係る発明は、上記請求項３に記載の排水浄化装置において、浄化水貯留室内に貯留された浄化水の異常を検出する異常検出手段と、この異常検査手段により上記浄化水の異常が検出された場合に、最上流浄化室内に貯留された排水を移送手段により排水貯留槽に移送させるように制御する制御手段とを備えたものである。
【００１３】
上記構成によれば、複数の浄化処理室により排水が浄化処理された後、浄化水貯留室内に貯留された浄化水の貯留量が基準値以上となる等の異常が検出された場合に、上記移送手段を介して最上流浄化処理室内の排水が排水貯留槽内に移送されることにより、上記複数の浄化処理室による排水の浄化機能が維持されることになる。
【００１４】
請求項５に係る発明は、トイレから排出された汚水等の汚泥成分を含有する排水を段階的に浄化する複数の浄化処理室と、その最下流部に位置する最下流浄化処理室から導出された浄化水を貯留する浄化水貯留室とを備えた排水浄化装置において、最上流部に位置する最上流浄化処理室と並列に設置された汚泥処理槽と、上記最上流浄化処理室内に収容された排水を汚泥分解槽に移送する移送手段とを備え、上記汚泥分解槽に、移送手段により移送された排水中の汚泥成分を嫌気分解処理する嫌気分解室と、この嫌気分解室から導出された処理水を好気分解処理する好気分解室と、この好気分解室から導出された処理水を沈殿分離処理する沈殿分離室とを設けたものである。
【００１５】
上記構成によれば、最上流浄化処理室内の排水が移送手段を介して汚泥分解槽に移送されることにより、この排水中の汚泥成分が上記嫌気分解室、好気分解室および沈殿分解室内において段階的に浄化処理されることになる。
【００１６】
請求項６に係る発明は、上記請求項５に記載の排水浄化装置において、汚泥分解槽の嫌気分解室に移送された排水中の汚泥成分を７０°Ｃ以上に加熱することにより、汚泥成分中の繊維質や核質の分解を促進する加熱手段を設けたものである。
【００１７】
上記構成によれば、汚泥分解槽の嫌気分解室に移送された排水中の汚泥成分が所定温度に加熱されることにより、汚泥成分中の繊維質や核質の分解が促進されるため、移送手段を介して移送された排水が汚泥分解槽において効果的に浄化処理されることになる。
【００１８】
【発明の実施の形態】
図１および図２は、本発明に係る排水浄化装置の実施形態を示している。この排水浄化装置は、鋼板材、アルミニウム合金材、ステンレス鋼材、プラスチック材、ＰＣ（プレストレスコンクリート）材、鉄筋コンクリート材、ＦＲＰ（繊維強化プラスチック）材またはプラスチック材等からなる浄化処理槽１と、この浄化処理槽から導出された浄化水を貯留する浄化水貯留槽２と有し、この浄化処理槽１および浄化水貯留槽２が地中に埋設され、あるいは地上に立設された状態で使用されるものである。
【００１９】
上記浄化処理槽１は、最上流部に位置する沈殿分離室からなる最上流浄化処理室４と、その下流側に位置する接触ばっ気処理室からなる第１中流浄化処理室５と、その下流側の沈殿室からなる第２中流浄化処理室６と、その下流側の接触濾過室からなる第３中流浄化処理室７と、各浄化処理室４〜８の最下流部に位置する沈殿濾過室からなる最下流浄化処理室８と、この最下流浄化処理室８から導出された処理水を脱色処理して貯留する浄化水貯留室９とを有している。
【００２０】
上記最上流浄化処理室（沈殿分離室）４は、図外のトイレから排出管３を介して導出された汚水、または生ゴミをディスポーザにより微粉砕することにより生成された雑排水等の汚泥成分を含有する排水中の紙および粗大異物等の汚泥成分を沈殿させて分離した後に、この分離水を上記第１中流浄化処理室５にオーバフローさせて導出するとともに、この第１中流浄化処理室５に浮遊物が流失するのをバッフルプレート１０により阻止するように構成されている。なお、上記最上流浄化処理室４において沈殿した固形分は、定期的（例えば１年毎）に外部に吸い出されて処理される。
【００２１】
上記第１中流浄化処理室５（接触ばっ気室）には、従来周知のプラスチック製接触材１１が充填されるとともに、図外のブロアから供給された空気を放出する散気管１２が上記プラスチック製接触材１１の下方に配設されている。そして、上記最上流浄化処理室４の上部からオーバフローすることにより第１中流浄化処理室５内に導入された処理水が、散気管１２から放出された空気によって撹拌されつつ、上記プラスチック製接触材１１に付着して生息した微生物により、上記分離水中の汚泥成分が分解処理されるように構成されている。
【００２２】
また、上記第１中流浄化処理室５と第２中流浄化処理室６との間には、連通路１３が下端部に設けられ、第１中流浄化処理室５内において浄化処理された処理水が上記連通路１３を介して第２中流浄化処理室６（沈殿室）内に導入されることにより、沈殿処理されることになる。この第２中流浄化処理室６内において沈殿処理された処理水は、導出管１４を介して上記第３中流浄化処理室７内にオーバフローすることにより導入される。
【００２３】
上記第３中流浄化処理室（接触濾過室）７内には、メッシュ状の袋体内にカキ、ホタテ貝、ホッキ貝、真珠貝、アサリ、シジミ、はまぐり、アオヤギ、カラス貝、サザエ、ミル貝もしくは貝化石等からなる貝殻、または死滅して白化した珊瑚が収容されてなる貝殻・珊瑚製接触材１５が充填されるとともに、その下方にブロアから供給された空気を放出する散気管１６が配設されている。
【００２４】
上記貝殻は、図３に示すように、炭酸カルシウムを主成分とし、かつリン酸カルシウムや炭酸マグネシウム等の微量成分を含有しており、外面側の殻皮層ａと、内面側の真珠層ｂと、その間の角柱層ｃとからなっている。そして、図４に示すように、上記貝殻の真珠層ｂが除去された状態で袋体内に収容されることにより上記接触材１５が構成されている。
【００２５】
上記貝殻の真珠層ｂを除去する方法としては、適宜の工具を使用して真珠層ｂを剥離する方法、海岸の波打ち際に貝殻を１年間程度放置して真珠層ｂを自然浸食させる方法、塩酸等の薬品を使用して真珠層ｂを溶解させる方法、または多数の貝殻を撹拌機に撹拌して貝殻同士を接触させることにより真珠層ｂを剥離させる方法等がある。なお、上記自然浸食もしくは撹拌法により真珠層ｂを除去する場合には、この真珠層ｂとともに、上記殻皮層ａの一部も除去されることになる。
【００２６】
そして、上記第２中流浄化処理室６から第３中流浄化処理室７内に導入された処理水は、散気管１６から放出された空気によって撹拌されつつ、上記貝殻・珊瑚製接触材１５に付着した状態で生息する微生物により、上記処理水中の汚泥成分が分解処理される。また、上記第２中流浄化処理室６の下端部からから第３中流浄化処理室７内にオーバフローして導入された処理水は、散気管１６から放出された空気によって撹拌されつつ、上記貝殻・珊瑚製接触材１５に付着した状態で生息する微生物により、上記処理水中の汚泥成分がさらに分解処理される。
【００２７】
上記第３中流浄化処理室７において浄化処理された処理水は、その下端部から最下流浄化処理室８に導出される。この最下流浄化処理室（沈殿濾過室）８は、多孔質体からなるゼオライトが収容された濾過体１７を有し、上記第３中流浄化処理室７から導出された処理水中の不純物を沈殿させて汚水と上澄み水とに分離するとともに、この上澄み水中の微細な不純物を上記濾過体１７により濾過して浄化水を生成するように構成されている。上記最下流浄化処理室８において生成された浄化水は、上記浄化水貯留室９内にオーバフローして導出される。
【００２８】
また、上記浄化水貯留室９には、図５に示すように、複数の透孔が形成された仕切り板１９，２０が上下に設置された吸着筒２１と、この吸着筒２１内の仕切り板１９，２０間に配設された活性炭収容体２２と、浄化水貯留室９内の処理水を吸引して上記活性炭収容体２２の下方部に吐出する循環ポンプ２３および循環パイプ２４を有する循環手段２５とが設けられている。上記活性炭収容体２２は、布材等からなる袋体内に石炭系の活性炭が充填されることにより構成されている。上記循環手段２５により活性炭収容体２２の下方部に吐出された処理水が、上記吸着筒２１内を通って上記浄化水貯留室９内を循環するとともに、その際に、活性炭収容体２２内の石炭系活性炭により色素成分が吸着されて効果的に脱色されるようになっている。
【００２９】
上記浄化水貯留室９において脱色処理された浄化水は、図２に示すように、その一部が給水ポンプ２６および給水パイプ２７を有する給水手段２８によってトイレの給水タンク（図示せず）に供給されるとともに、残りが、導出管３０を介して上記浄化水貯留槽２に導出されて貯留される。また、上記給水パイプ２７には、必要に応じて浄化水貯留室９内の浄化水を、上記第１，第３中流浄化処理室５，７および最下流浄化処理室８の上部から各浄化処理室５〜８内に洗浄水として供給することにより、各浄化処理室５〜８の内壁面を洗浄するための洗浄パイプ３１〜３３が連設されている。
【００３０】
上記最上流浄化処理室４と、その下流側に位置する第１，第３中流浄化処理室５，７と、最下流浄化処理室８とは、図２および図６に示すように、浄化処理槽１の側面下部に設置された還流通路３５を介して互いに接続されている。そして、上記還流通路３５には、この還流通路３５を開閉する第１，第２開閉弁３６，３７が設けられ、上記還流通路３５の上流側に位置する第１開閉弁３６を開放することにより、上記最上流浄化処理室４と、第１中流浄化処理室５および第２中流浄化処理室６とが連通状態となるように構成されている。また、上記第１開閉弁３６を開放状態に維持しつつ、その下流側の第２開閉弁３７を開放状態とすることにより、上記最上流浄化処理室４と、第３中流浄化処理室７および最下流浄化処理室８とが連通状態となるように構成されている。
【００３１】
上記最上流浄化処理室４、第１〜第３中流浄化処理室５〜７、最下流浄化処理室８および浄化水貯留室９の上部には、清掃または点検用のそれぞれ開口部４０〜４３が形成されている。上記最上流浄化処理室４に形成された開口部４０は、排水吸引手段の吸引ホースが挿入される吸引口として利用されるものである。また、通常時には、上記開口部４０〜４３を開閉可能に閉止する閉止蓋（図示せず）が設置されている。さらに、上記排水浄化装置には、浄化水貯留槽２からなる浄化水貯留室内に貯留された浄化水を、洗浄水として最上流浄化処理室４内に供給することにより、この最上流浄化処理室４の内壁面を洗浄するための給水ポンプ４５および給水パイプ４６を有する浄化水供給手段４７が設けられている。
【００３２】
上記のように本発明に係る排水浄化装置は、トイレから排出された排水を段階的に浄化する複数の浄化処理室４〜８と、その最下流部に位置する最下流浄化処理室８から導出された浄化水を貯留する浄化水貯留室９と、この浄化水貯留室９から導出された浄化水を貯留する浄化水貯留槽２とを備えているため、トイレから排出管３を介して導出された排水中の紙および粗大異物等の汚泥成分を最上流浄化処理室４内において沈殿分離した後に、この最上流浄化処理室４から第１〜第３中流浄化処理室５〜７および最下流浄化処理室８に順次導出された処理水中の汚泥成分を微生物の作用等により段階的に浄化した状態で、この浄化水を上記浄化水貯留室９および浄化水貯留槽２内に導出して貯留することができる。したがって、上記浄化水貯留室９内に貯留された浄化水を給水手段２８によってトイレの給水タンクに供給する等により、有効に利用することが可能となる。
【００３３】
そして、上記排水浄化装置の最上流部に位置する最上流浄化処理室４に、排水を吸引するための開口部（吸引口）４０を設けるとともに、上記最上流浄化処理室４の下流側に配設された第１〜第３中流浄化処理室５〜７および最下流浄化処理室８内の処理水を最上流浄化処理室内に還流させる還流通路３５を有する還流手段と、上記浄化水貯留槽２からなる浄化水貯留室内に貯留された浄化水を最上流浄化処理室４内に供給する浄化水供給手段４７とを設けたため、バキュームカー等に設けられた排水吸引手段の吸引ホースを、最上流浄化処理室４の開口部４０に挿入して、その内部の排水を吸引することにより、各浄化処理室４〜９の内部に収容された排水および処理水を順次外部に導出した後、その内壁面を洗浄することができる。
【００３４】
すなわち、上記排水吸引手段により最上流浄化処理室４内に収容された排水を外部に導出した後に、上記還流通路３５に設けられた第１，第２開閉弁（開閉手段）３６，３７を順次開放した状態で、最上流浄化処理室４内内に導入された処理水を吸引して外部に導出する作業を継続することにより、第１〜第３中流浄化処理室５〜７および最下流浄化処理室８内から上記還流通路３５を介して最上流浄化処理室４内に還流された処理水を順次外部に導出することができる。そして、上記浄化水供給手段４７から供給される洗浄水によって最上流浄化処理室４の内壁面に付着した汚泥成分等を除去するとともに、最上流浄化処理室４および第１，第２中流浄化処理室５，６内に上記浄化水からなる洗浄水を充填することができる。
【００３５】
したがって、各浄化処理室４〜８の上端部に形成された開口部４０〜４３に上記吸引ホースを順番に挿入してそれぞれ個別に内部の排水または処理水を外部に導出する等の繁雑な作業を要することなく、各浄化処理室４〜８の内部を迅速かつ容易に空にすることができる。このため、野外演奏会等のイベント開催時または災害の発生時等に、所定個所に一時的に設置された上記排水浄化装置を撤去する作業を容易かつ適正に行うことができる。
【００３６】
また、公園等において定常的に設置された公衆トイレ用の排水浄化装置を定期点検する際または補修する際等においても、各浄化処理室４〜８を空にするとともに、上記浄化処理槽１に設けられた各浄化処理室４〜８の内部を洗浄することにより、上記定期点検作業および補修作業等を容易に行うことができるという利点がある。なお、上記排水および処理水の導出後に、最上流浄化処理室４および第１，第２中流浄化処理室５，６内を浄化水によって満たすことができるようにするために、上記浄化水貯留槽２の容量を、最上流浄化処理室４および第１，第２中流浄化処理室５，６の総容量に略等しい値に設定することが望ましい。
【００３７】
また、上記実施形態では、浄化処理槽１の浄化水貯留室９内に貯留された浄化水を、第１，第３中流浄化処理室５，７および最下流浄化処理室８の上部から洗浄水としてそれぞれ供給する洗浄パイプ３１〜３３を備えた上記給水手段２８からなる浄化水供給手段を設けたため、上記第１〜第３中流浄化処理室５〜７および最下流浄化処理室８内の処理水を最上流浄化処理室４内に還流させて順次外部に導出させる際に、上記各浄化処理室５〜８の内壁面に付着した汚泥成分等を、上記浄化水供給手段から供給される洗浄水により効果的に除去することができるという利点がある。
【００３８】
さらに、上記実施形態では、排水浄化装置の第３中流浄化処理室７内に充填される貝殻・珊瑚接触材１５として、少なくとも内面側の真珠層ｂが除去されて多孔質の角柱層ｃが露出したカキ殻等を使用したため、この貝殻・珊瑚接触材１５と、上記第３中流浄化処理室７内に導入された処理水中の汚泥成分を分解処理する微生物との親和性を高めて、これらを好適に繁殖させることができる。したがって、上記多孔質の角柱層ｃにおいて繁殖した微生物により、処理水中の汚泥成分を効果的に分解処理して排水を効率よく浄化することができる。しかも、上記排水浄化装置の設置当初から、上記微生物の分解処理機能等を発揮させることができるため、上記排水浄化装置により浄化処理された浄化水を外部に放出した場合に、環境汚染が発生するのを効果的に防止することができるとともに、上記浄化水をトイレの洗浄水として利用することにより、水資源の有効利用を図ることができるという利点がある。
【００３９】
また、上記第１中流浄化処理室５および第３中流浄化処理室７において排水がばっ気処理されることにより、処理水が酸性化した場合には、上記貝殻・珊瑚から炭酸カルシウム（ＣａＣＯ_２）を迅速に溶解させて、上記処理水を中和することができる。すなわち、上記真珠層ｂが除去された貝殻は、その溶解が進行し易いという特性を有しているため、酸性化した処理水を効果的に中性化できるという利点がある。
【００４０】
しかも、上記のように第３中流浄化処理室７において処理水が中性化されるので、太陽虫等の原生動物および腔腸動物を多量に発生、繁殖させることができる。このため、上記処理水中に存在する大腸菌等の細菌を、上記原生動物等に補食させて絶滅させることにより、上記排水浄化処装置から導出される浄化処理水中に細菌が混入するのを効果的に防止することができる。
【００４１】
さらに、上記処理水にリン成分が含有されている場合には、下式に示すように、上記炭酸カルシウムから遊離したＣａイオンと、処理水中のリンイオン（ＨＰＯ_４）とを効果的に反応させることにより、処理水を迅速に中性化してリン酸カルシウム（Ｃａ（ＯＨ）（ＰＯ４）_３）を生成することができる。そして、上記リン酸カルシウム（Ｃａ（ＯＨ）（ＰＯ４）_３）を、浄化水貯留室９に配設された上記活性炭収容体２２中の活性炭に吸着させて回収することにより、これを肥料等として使用可能であるという利点がある。
【００４２】
５Ｃａ＋３ＨＰＯ_４ → Ｃａ（ＯＨ）（ＰＯ_４）_３＋３Ｈ_２Ｏ
なお、上記処理水中のリン酸カルシウム（Ｃａ（ＯＨ）（ＰＯ_４）_３）は、その一部が最下流浄化処理室８内において沈殿するとともに濾過体１７により吸着され、その残りが上記活性炭吸着室２２内において活性炭に吸着されることとなる。上記処理水中に残存する微量のリン成分を除去するためには、上記活性炭吸着室２２内に、カキ殻等の貝殻が充填されたリン吸着筒を配設した構造とすることが望ましい。
【００４３】
また、上記実施形態では、図５に示すような循環手段２５を設け、浄化水貯留室９内の処理水を吸引して上記活性炭収容体２２の下方部に吐出することにより、上記浄化水貯留室９内に処理水を循環させるように構成したため、上記処理水中の色素成分を、活性炭収容体２２内に収容された石炭系活性炭により効果的に吸着して脱色作用を向上させることができるという利点がある。
【００４４】
さらに、上記実施形態では、第３中流浄化処理室７の上流側にプラスチック製接触材１２が充填された第１中流浄化処理室５と、この第１中流浄化処理室５において処理された処理水中の不純物等を沈殿させる沈殿室からなる第２中流浄化処理室６を配設し、排水をある程度浄化した状態で、第３中流浄化処理室７に供給するように構成したため、この第３中流浄化処理室７内に配設されたカキ殻等の貝殻が早期に汚損されたり、貝殻が溶解して消失したりするのを効果的に抑制できるという利点がある。
【００４５】
なお、上記実施形態では、浄化処理槽１の最下流部に配設された浄化水貯留室９とは別体に形成された浄化水貯留槽２を設け、上記浄化水貯留室９から導出管３０を介して導出された浄化水を浄化水貯留槽２内に貯留するように構成した例について説明したが、上記浄化水貯留室９に浄化水貯留槽２を連設することにより、これらを一体化した構造としてもよく、あるいは上記浄化水貯留室９の容量を大きくすることにより、上記浄化水貯留槽２を省略した構造としてもよい。
【００４６】
また、上記浄化水貯留槽２内に貯留された浄化水を最上流浄化処理室４内に供給する浄化水供給手段４７を設けるとともに、上記浄化水貯留室９内に貯留された浄化水を第１，第３中流浄化処理室５，７および最下流浄化処理室８内に洗浄水として供給する洗浄パイプ３１〜３３を有する給水手段２８に設けてなる上記実施形態に代え、浄化水貯留室９内に貯留された浄化水を最上流浄化処理室４内に供給する浄化水供給手段と、上記浄化水貯留槽２内に貯留された浄化水を第１，第３中流浄化処理室５，７および最下流浄化処理室８等内に供給する浄化水供給手段とを設けた構造としてもよい。
【００４７】
さらに、上記第１，第３中流浄化処理室５，７内の処理水を最上流浄化処理室４内に還流させる還流通路３５を有する還流手段に代え、処理水移送ポンプまたはエアリフト（圧縮間空気を用いた移送手段）を設けることにより、上記処理水を強制的に最上流浄化処理室４内に還流させるようにしてもよい。
【００４８】
また、図７に示すように、上記浄化水貯留室９内に貯留された浄化水を吸引する第１吸引パイプ５１と、浄化水貯留槽２内に貯留された浄化水を吸引する第２吸引パイプ５２と、両吸引パイプ５１，５２の合流部よりも上流側に配設された給水ポンプ５３と、各浄化処理室４〜８内に洗浄水を供給する洗浄パイプ５４〜５７とを有する浄化水供給手段５８を設け、上記両吸引パイプ５１，５２に設けられた開閉弁５５，５６の一方を閉止するとともに他方を開放した状態で、上記給水ポンプ５３を作動させることにより、上記浄化水貯留室９または浄化水貯留槽２内の浄化水を吸引して上記各浄化処理室４〜８内に選択的に供給することにより、各浄化処理室４〜８の内壁面に付着した汚泥成分等を順次除去するように構成してもよい。
【００４９】
さらに、浄化処理槽１の最下流部に設けられた浄化水貯留室９内に、図８に示すように、複数の活性炭収容体２２ａ〜２２ｃを設置するとともに、循環ポンプ２３から吐出された処理水を各活性炭収容体２２ａ〜２２ｃの下方部にそれぞれ吐出させる分岐管２４ａ〜２４ｃを設け、この分岐管２４ａ〜２４ｃの上流部に位置する循環パイプ２４に設けられた圧力計６１の検出圧力に応じて各分岐管２４ａ〜２４ｃに設けられた自動開閉弁６２ａ〜６２ｃを開閉制御することにより、使用する活性炭収容体２２ａ〜２２ｃを順次切り換えるように構成してもよい。
【００５０】
すなわち、上記分岐管２４ａに設けられた自動開閉弁６２ａを開放するとともに、他の自動開閉弁６２ｂ，６２ｃを閉止した状態で、上記循環ポンプ２３を作動させることにより、上記圧力計６１により処理水の供給圧力を検出しつつ、第１の活性炭収容体２２ａに処理水を供給する。この第１の活性炭収容体２２ａに目詰まりが生じる等により、その処理能力が低下すると、上記圧力計６１の検出圧力が上昇するため、これに対応して上記自動開閉弁６２ａ〜６２ｃの開閉制御を実行することにより、使用する活性炭収容体２２ａ〜２２ｃを順次切り換えるようにする。このように構成することにより、各活性炭収容体２２ａ〜２２ｃの使用時期および頻度を適正に設定してランニングコストを低下させることができるという利点がある。
【００５１】
なお、上記浄化水貯留室９内に複数の活性炭収容体２２ａ〜２２ｃを設置するとともに、図９に示すように、各活性炭収容体２２ａ〜２２ｃの下方部にそれぞれ処理水を供給して循環させる複数の循環ポンプ２３ａ〜２３ｃおよび循環パイプ２４ａ〜２４ｃを有する循環手段２５ａ〜２５ｃを個別に設けた構造としてもよく、あるいは容量の大きな単一の循環ポンプ（図示せず）により、各活性炭収容体２２ａ〜２２ｃの下方部に対して同時に処理水を供給するように構成してもよい。
【００５２】
また、図１０に示すように、浄化水貯留槽２からなる浄化水貯留室内に貯留された浄化水の異常、つまり浄化水貯留槽２内に貯留された浄化水の量が基準値以上となってこの貯留槽２が満杯になり、または貯留された浄化水の水質が低下してｐｈ、色度（濁度）、残留塩素濃度の何れかが基準値よりも悪化する等の異常が発生したか否かを検出する異常検出手段６３と、この異常検出手段６３において異常が検出された場合に異常検出信号を管理部６４に送信する送信手段６５を設けた構造としてもよい。このように構成した場合には、上記浄化処理槽１に設けられた各浄化処理室４〜８による排水の浄化機能が低下し、あるいは多量の排水が一時に排水処理槽１に導入される等により、各浄化処理室４〜８による排水の浄化機能が不足した状態にあるために、点検作業および補修作業等が必要であることを管理者に対して適正に認識させることができる。
【００５３】
また、図１１に示すように、浄化処理槽１の最上流浄化処理室４と並列に排水貯留槽６６を設けるとともに、上記最上流浄化処理室４内に収容された排水を排水貯留槽６６内に移送する移送ポンプ６７および移送管６８を備えた移送手段６９を設けることにより、必要に応じて最上流浄化処理室４内の排水を排水貯留槽６６内に移送するように構成してもよい。
【００５４】
例えば、上記浄化水貯留槽２内に貯留された浄化水の異常を検出する異常検出手段６３の検出信号に応じ、浄化水貯留槽２内が浄化水で満杯になり、あるいは最上流浄化処理室４内に大量の排水が流入して上記浄化水の水質が低下する等の異常が発生したことが検出された場合に、制御手段４８から上記移送ポンプ６７作動指令信号を出力してこの移送ポンプ６７を作動させることにより、最上流浄化処理室４内の排水を排水貯留槽６６内に移送した後、制御手段４８から浄化水供給手段４５の給水ポンプ４６に作動指令信号を出力してこの給水ポンプ４６を作動させることにより、浄化水貯留槽２内の浄化水を浄化処理槽１の最上流浄化処理室４等の内部に供給するように構成してもよい。なお、図１０および図１１において、４７ａは、浄化水供給手段４７により浄化処理室４〜６に供給される浄化水の供給方向を切り換える三方切換弁である。
【００５５】
上記のように構成した場合には、排水を吸引して外部に導出する作業の２回分を同時に行うことができるため、上記浄化処理槽１の点検作業および補修作業等を行う周期を約２倍に延ばすことができるという利点がある。なお、上記移送ポンプ６７により最上流浄化処理室４内の排水を排水貯留槽６６内に強制的に移送するようにした上記実施形態に代え、最上流浄化処理室４内の排水をオーバフローさせることにより、上記排水貯留槽６６内に上記排水を移送させるように構成してもよい。
【００５６】
また、図１２に示すように、トイレから排出された汚水、または生ゴミをディスポーザにより微粉砕することによりされた生成された雑排水等の汚泥成分を含有する排水を段階的に浄化する複数の浄化処理室４〜８と、その最下流部に位置する最下流浄化処理室８から導出された浄化水を貯留する浄化水貯留室９を有する浄化処理槽１と、この浄化水処理槽１の最下流部に連設された浄化水浄化水貯留槽２と、上記浄化水処理槽１の最上流部に位置する最上流浄化処理室４と並列に設置された汚泥処理槽７０と、上記最上流浄化処理室４内に収容された排水を汚泥分解槽に移送する移送管等からなる移送手段７１とを備え、この移送手段７１を介して上記汚泥分解槽７０に移送された排水中の汚泥成分を嫌気分解処理する嫌気分解室７２と、この嫌気分解室７２から導出された処理水を好気分解処理する好気分解室７３と、この好気分解室７３から導出された処理水を沈殿分離処理する沈殿分離室７４とを上記汚泥分解槽７０に設けた構造としてもよい。
【００５７】
上記嫌気分解室７２には、移送手段７１を介して最上流浄化処理室４内からオーバフローまたは強制的に移送された排水中の汚泥成分を構成する有機物を嫌気条件下で分解してメタンガスを生成するメタン菌が収容されている。また、上記好気分解室７３には、嫌気分解室７２から導出された処理水中の残存有機成分の分解およびアンモニアの硝化等を行う好気性生物が収容されている。そして、上記好気生分解室７３により分解処理されて沈殿分離室７４に導出された処理水は、この沈殿部隣室７４内において沈殿処理された後、散水または放水され、あるいは防火水等として再利用される。
【００５８】
また、上記嫌気分解室７２には、その内部に収容された排水の一部を循環させる循環パイプ７５が設けられている。この循環パイプ７５には、ボイラ７６から供給される廃熱または蒸気によって上記循環パイプ７５内を循環する排水中の汚泥成分を７０°Ｃ以上に加熱することにより、汚泥成分中の繊維質や角質の分解を促進するとともに、上記嫌気分解室７２内の温度を、３５°Ｃ〜３７°Ｃ程度のメタ発酵菌による中温発酵に適した温度、または５３°Ｃ〜５６°Ｃ程度のメタ発酵菌による高温発酵に適した温度に加熱する加熱器７７からなる加熱手段が設けられている。上記ボイラ７６は、嫌気分解室７２において生成されたメタンガスを燃料とし、上記浄化水貯留槽２内の浄化水を加熱することにより蒸気を生成するように構成されている。
【００５９】
上記の構成によれば、最上流浄化処理室４内から汚泥分解槽７０に移送手段７１を介して移送された排水中の汚泥成分を、上記嫌気分解室７２、好気分解室７３および沈殿分解室７４内において段階的に浄化処理することにより、上記汚泥成分を効率よく分解処理することができるため、上記浄化処理槽１の処理能力を超えた排水が供給された場合においても、これを容易に浄化処理することができ、しかも上記嫌気分解室７２において生成されたメタンガス等のバイオガスをボイラ７６等の燃料として有効に利用することができるという利点がある。
【００６０】
また、上記実施形態では、移送手段１７を介して汚泥分解槽７０の嫌気分解室７２に移送された排水中の汚泥成分を７０°Ｃ以上に加熱することにより、汚泥成分中の繊維質や核質の分解を促進する加熱手段７７を設けたため、汚泥分解槽７０の嫌気分解室７２に移送された排水中の汚泥成分を所定温度に加熱して上記繊維質や核質の分解を促進することができるとともに、嫌気分解室７５の内部をメタン菌の発酵作用に適した温度に加熱することにより、上記排水をさらに効果的に浄化処理できるという利点がある。
【００６１】
【発明の効果】
以上説明したように、本発明は、トイレから排出された汚水等の汚泥成分を含有する排水を段階的に浄化する複数の浄化処理室と、その最下流部に位置する最下流浄化処理室から導出された浄化水を貯留する浄化水貯留室とを備えた排水浄化装置において、最上流部に位置する最上流浄化処理室に貯留水の吸引口を設けるとともに、上記最上流浄化処理室の下流側に配設された浄化処理室内の処理水を最上流浄化処理室内に還流させる還流手段と、上記浄化水貯留室内の浄化水を最上流浄化処理室内に供給する浄化水供給手段とを設けたため、バキュームカー等に設けられた排水吸引手段により最上流浄化処理室内の排水を外部に導出した後、上記浄化水供給手段から供給される洗浄水によって最上流浄化処理室の内壁面に付着した汚泥成分等を除去することにより、最上流浄化処理室の内部に収容された排水の導出と、上記内壁面の洗浄とを効果的に行うことができるという利点がある。
【００６２】
また、本発明は、トイレから排出された汚水等の汚泥成分を含有する排水を段階的に浄化する複数の浄化処理室と、その最下流部に位置する最下流浄化処理室から導出された浄化水を貯留する浄化水貯留室とを備えた排水浄化装置において、最上流部に位置する最上流浄化処理室と並列に設置された汚泥処理槽と、上記最上流浄化処理室内に収容された排水を汚泥分解槽に移送する移送手段とを備え、上記汚泥分解槽に、移送手段により移送された排水中の汚泥成分を嫌気分解処理する嫌気分解室と、この嫌気分解室から導出された処理水を好気分解処理する好気分解室と、この好気分解室から導出された処理水を沈殿分離処理する沈殿分離室とを設けたため、上記浄化処理室の処理能力を超えた排水が供給された場合においても、これを容易に浄化処理することができる。
【図面の簡単な説明】
【図１】本発明に係る排水浄化装置の実施形態を示す説明図である。
【図２】上記排水浄化装置の構成を示す平面図である。
【図３】貝殻接触材を構成する貝殻の断面図である。
【図４】貝殻の真珠層を除去した状態を示す断面図である。
【図５】最下流浄化処理室に設けられた循環手段の具体的構成を示す斜視図である。
【図６】還流通路の具体的構成を示す正面図である。
【図７】本発明に係る排水浄化装置の別の実施形態を示す平面図である。
【図８】活性炭収容体の設置例を示す説明図である。
【図９】活性炭収容体の別の設置例を示す説明図である。
【図１０】本発明に係る排水浄化装置のさらに別の実施形態を示す平面図である。
【図１１】本発明に係る排水浄化装置のさらに別の実施形態を示す平面図である。
【図１２】本発明に係る排水浄化装置のさらに別の実施形態を示す平面図である。
【符号の説明】
１浄化処理槽
２浄化水貯留槽（浄化水貯留室）
４最上流浄化処理室
５第１中流浄化処理室
６第２中流浄化処理室
７第３中流浄化処理室
８最終浄化処理室
９浄化水貯留室
２８給水手段（浄化水供給手段）
３５還流通路（還流手段）
３６，３７開閉弁（還流手段）
４７浄化水供給手段
４８制御手段
５８浄化水供給手段
６６排水貯留槽
７０汚泥分解槽
７１嫌気分解室
７２好気分解室
７３沈殿分離室
７７加熱手段[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a wastewater purifying apparatus capable of quickly and highly purifying wastewater composed of human wastewater and the like discharged from a toilet and easily cleaning the inside of a purification treatment chamber as needed. .
[0002]
[Prior art]
Conventionally, as shown in Patent Literature 1, for example, a first aeration chamber for aeration treatment of sewage using oyster shells as a contact material, and contacting the overflow of the first aeration chamber with a porous artificial haze material. An anaerobic filter bed for anaerobic decomposition treatment, a second aeration chamber for inflowing sewage purified in the anaerobic filter floor and aeration using oyster shell as a contact material, and a purification in the second aeration chamber A wastewater treatment plant is equipped with a finishing treatment chamber that performs advanced treatment of decolorization and deodorization by flowing the separated water into contact with activated carbon. A contact aeration chamber, and a sedimentation chamber for storing the wastewater contacted and aerated in the contact aeration chamber and sending the wastewater to the first aeration chamber as a chamber for pretreatment of the wastewater flowing into the first aeration chamber. Advanced treatment septic tanks are known.
[0003]
[Patent Document 1]
Japanese Patent No. 2756657
[0004]
[Problems to be solved by the invention]
As shown in Patent Document 1, wastewater purification comprising an advanced treatment purification tank provided with a sedimentation separation chamber, a contact aeration chamber, a first aeration chamber, an anaerobic filter floor chamber, a second aeration chamber, and a finishing treatment chamber According to the device, the wastewater composed of sewage and the like discharged from the toilet can be treated stepwise so that the wastewater can be quickly and highly purified. However, when performing periodic inspections of the above-mentioned wastewater purifying apparatus, or when relocating a temporarily installed wastewater purifying apparatus at the time of an event or the like, each of the purification treatment chambers including the sedimentation separation chamber and the contact aeration chamber, etc. Since it is necessary to wash each of the wastewater sequentially and then to clean them individually, there is a problem that the work is extremely complicated and the time required for the cleaning work is unavoidably increased.
[0005]
The present invention has been made in view of the above points, and an object of the present invention is to provide a wastewater purification apparatus having a plurality of purification treatment chambers that can facilitate a cleaning operation.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 is derived from a plurality of purification processing chambers for gradually purifying wastewater containing sludge components such as sewage discharged from a toilet, and a most downstream purification processing chamber located at the most downstream portion thereof. And a purified water storage chamber for storing purified water, wherein a suction port for the stored water is provided in the most upstream purification processing chamber located at the most upstream portion, and a downstream side of the most upstream purification processing chamber. A recirculation means for circulating the treated water in the disposed purification treatment chamber into the most upstream purification treatment chamber; and a purified water supply means for supplying the purified water in the purified water storage chamber to the most upstream purification treatment chamber. is there.
[0007]
According to the above configuration, at the time of periodic inspection of the wastewater purifying apparatus or the like, the wastewater is sucked by inserting the suction hose or the like of the drainage suction means into the suction port of the most upstream purification processing chamber, thereby obtaining the most upstream purification processing chamber. The wastewater is sequentially led out to the outside, and the treated water in the purification treatment chamber including the middle purification treatment chamber and the most downstream purification treatment chamber is returned to the most upstream purification treatment chamber by the above-mentioned recirculation means and sucked. The treated water is sequentially led to the outside, and sludge components and the like attached to the inner wall surface of the uppermost stream purification treatment chamber are effectively washed by the washing water supplied from the purified water supply means.
[0008]
According to a second aspect of the present invention, in the wastewater purifying apparatus according to the first aspect, an abnormality detecting unit that detects an abnormality of the purified water stored in the purified water storage chamber, and the abnormality is detected by the abnormality detecting unit. And a transmission unit for transmitting an abnormality detection signal to the management unit in the event that the error occurs.
[0009]
According to the above configuration, it is appropriately determined whether or not the wastewater stored in each of the purification processing chambers is in a state in which the wastewater should be led out to the outside, in accordance with the abnormality detection signal transmitted from the abnormality detection unit to the management unit. Will be.
[0010]
According to a third aspect of the present invention, in the drainage purification device according to the first or second aspect, a drainage storage tank is installed in parallel with the most upstream purification chamber, and the wastewater accommodated in the most upstream purification chamber is drained. A transfer means for transferring the wastewater into the drainage storage tank is provided.
[0011]
According to the above configuration, when a large amount of wastewater flows into the uppermost stream purification processing chamber, or when the wastewater stored in the uppermost stream purification processing chamber is in a state in which the wastewater is to be extracted to the outside, etc., via the transfer means By transferring the wastewater in the uppermost purification treatment chamber into the wastewater storage tank, it is possible to reduce the number of operations for drawing the wastewater in the uppermost purification treatment chamber to the outside while maintaining the purification function of the wastewater. Become.
[0012]
According to a fourth aspect of the present invention, there is provided the wastewater purifying apparatus according to the third aspect, wherein abnormality detecting means for detecting an abnormality of the purified water stored in the purified water storage chamber, and abnormality of the purified water by the abnormality inspecting means. And control means for controlling the transfer of the wastewater stored in the uppermost stream purification chamber to the wastewater storage tank by the transfer means when is detected.
[0013]
According to the above configuration, after the wastewater is purified by the plurality of purification processing chambers, when an abnormality such as the storage amount of the purified water stored in the purified water storage chamber being equal to or larger than the reference value is detected, By transferring the wastewater in the uppermost stream purification processing chamber into the drainage storage tank via the transfer means, the function of purifying the wastewater by the plurality of purification processing chambers is maintained.
[0014]
The invention according to claim 5 is derived from a plurality of purification processing chambers for gradually purifying wastewater containing sludge components such as sewage discharged from a toilet and a most downstream purification processing chamber located at the most downstream portion thereof. A wastewater purification device having a purified water storage chamber for storing purified water, wherein a sludge treatment tank installed in parallel with the most upstream purification treatment chamber located at the most upstream part, Transfer means for transferring waste water to a sludge decomposition tank, wherein the sludge decomposition tank is provided with an anaerobic decomposition chamber for anaerobically decomposing sludge components in the waste water transferred by the transfer means, and is derived from the anaerobic decomposition chamber. It is provided with an aerobic decomposition chamber for aerobically decomposing the treated water, and a sedimentation separation chamber for sedimenting and separating the treated water derived from the aerobic decomposition chamber.
[0015]
According to the above configuration, the wastewater in the uppermost stream purification treatment chamber is transferred to the sludge decomposition tank via the transfer means, so that the sludge component in the wastewater is converted into the anaerobic decomposition chamber, the aerobic decomposition chamber, and the precipitation decomposition chamber. The purification process is performed stepwise.
[0016]
According to a sixth aspect of the present invention, in the wastewater purifying apparatus according to the fifth aspect, the sludge component in the wastewater transferred to the anaerobic decomposition chamber of the sludge decomposition tank is heated to 70 ° C. or more, whereby the sludge component is removed. And a heating means for promoting the decomposition of fibrous and nuclear materials.
[0017]
According to the above configuration, since the sludge component in the wastewater transferred to the anaerobic decomposition chamber of the sludge decomposition tank is heated to a predetermined temperature, the decomposition of the fibrous and nuclear materials in the sludge component is promoted. The wastewater transferred via the means is effectively purified in the sludge decomposition tank.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 show an embodiment of a waste water purification device according to the present invention. This wastewater purification apparatus includes a purification tank 1 made of a steel plate material, an aluminum alloy material, a stainless steel material, a plastic material, a PC (prestressed concrete) material, a reinforced concrete material, an FRP (fiber reinforced plastic) material, a plastic material, or the like. It has a purified water storage tank 2 for storing purified water derived from the purification treatment tank, and is used in a state where the purification treatment tank 1 and the purified water storage tank 2 are buried underground or erected on the ground. Things.
[0019]
The purification processing tank 1 includes a most upstream purification processing chamber 4 including a sedimentation separation chamber located at the most upstream part, a first middle flow purification processing chamber 5 including a contact aeration processing chamber located downstream thereof, and a downstream thereof. A second middle-stream purification processing chamber 6 composed of a settling chamber on the side, a third middle-stream purification processing chamber 7 composed of a contact filtration chamber downstream thereof, and a sedimentation filtration chamber located at the most downstream portion of each of the purification processing chambers 4 to 8. And a purified water storage chamber 9 for decolorizing and storing treated water derived from the most downstream purification treatment chamber 8.
[0020]
The uppermost stream purification treatment chamber (sedimentation separation chamber) 4 is a sludge component such as sewage discharged from a toilet (not shown) through the discharge pipe 3 or gray water generated by finely pulverizing garbage with a disposer. After sedimentation and separation of sludge components such as paper and coarse foreign matter in the wastewater containing water, the separated water overflows to the first middle flow purification treatment chamber 5 and is drawn out. The baffle plate 10 is configured to prevent the suspended matter from flowing away. The solid content precipitated in the uppermost stream purification processing chamber 4 is periodically (for example, every year) sucked out and processed.
[0021]
The first midstream purification chamber 5 (contact aeration chamber) is filled with a conventionally known plastic contact material 11, and an air diffuser 12 for discharging air supplied from a blower (not shown) is formed of the plastic medium. It is arranged below the contact member 11. Then, the treated water introduced into the first middle-stream purification processing chamber 5 by overflowing from the upper part of the uppermost-stream purification processing chamber 4 is stirred by the air released from the air diffuser 12 while the plastic contact material is being stirred. The sludge component in the separated water is decomposed by microorganisms that have adhered to and lived on the separated water.
[0022]
A communication passage 13 is provided at a lower end between the first middle flow purification processing chamber 5 and the second middle flow purification processing chamber 6, and the treated water purified in the first middle flow purification processing chamber 5 is provided therein. By being introduced into the second middle flow purification processing chamber 6 (sedimentation chamber) through the communication passage 13, the sedimentation processing is performed. The treated water subjected to the precipitation treatment in the second middle flow purification processing chamber 6 is introduced by overflowing into the third middle flow purification processing chamber 7 through the outlet pipe 14.
[0023]
In the third middle-stream purification treatment chamber (contact filtration chamber) 7, oysters, scallops, clams, pearl clams, clams, clams, clams, blue goats, crows, sazae, mill shells or mesh shells A shell shell made of fossil shells or a shell / coral contact material 15 containing a dead and whitened coral is filled, and an air diffuser 16 for discharging air supplied from a blower is provided below the shell / coral contact material 15. Have been.
[0024]
As shown in FIG. 3, the shell is composed mainly of calcium carbonate and contains trace components such as calcium phosphate and magnesium carbonate. The outer shell layer a, the inner nacre layer b, And the prism layer c. And as shown in FIG. 4, the said contact material 15 is comprised by being accommodated in a bag body with the nacre layer b of the said shell removed.
[0025]
As a method for removing the nacre b of the shell, a method of peeling the nacre b using an appropriate tool, a method of allowing the nacre b to naturally erode by leaving the shell left for about one year at the shore of a beach, hydrochloric acid, Or a method of dissolving the nacre b using a chemical such as the above, or a method of agitating a large number of shells with a stirrer and bringing the shells into contact with each other to peel off the nacre b. When the pearl layer b is removed by the natural erosion or the stirring method, a part of the shell layer a is removed together with the pearl layer b.
[0026]
The treated water introduced from the second middle-stream purification chamber 6 into the third middle-stream purification chamber 7 adheres to the shell / coral contact material 15 while being stirred by the air released from the air diffuser 16. The sludge components in the above treated water are decomposed by microorganisms that live in a degraded state. In addition, the treated water overflowed from the lower end of the second middle-stream purification processing chamber 6 and introduced into the third middle-stream purification processing chamber 7 is agitated by the air discharged from the air diffuser 16, while being treated by the shell / shell. The sludge component in the treated water is further decomposed by microorganisms that live in a state of being attached to the coral contact material 15.
[0027]
The treated water purified in the third middle-stream purification processing chamber 7 is led out to the most downstream purification processing chamber 8 from its lower end. The most downstream purification processing chamber (sedimentation filtration chamber) 8 has a filter body 17 containing a zeolite made of a porous body, and precipitates impurities in the treated water derived from the third midstream purification processing chamber 7. And separated into waste water and supernatant water, and fine impurities in the supernatant water are filtered by the filter 17 to generate purified water. The purified water generated in the most downstream purification processing chamber 8 overflows into the purified water storage chamber 9 and is led out.
[0028]
Further, as shown in FIG. 5, the purified water storage chamber 9 has an adsorption column 21 in which a plurality of partition plates 19 and 20 having a plurality of through-holes are formed, and a partition plate in the adsorption column 21. Circulating means having an activated carbon container 22 disposed between 19 and 20 and a circulating pump 23 and a circulating pipe 24 for sucking the treated water in the purified water storage chamber 9 and discharging it to a lower portion of the activated carbon container 22 25 are provided. The activated carbon container 22 is formed by filling a bag made of cloth or the like with coal-based activated carbon. The treated water discharged to the lower part of the activated carbon container 22 by the circulating means 25 circulates in the purified water storage chamber 9 through the adsorption tube 21, and at that time, the water in the activated carbon container 22 The pigment component is adsorbed by the coal-based activated carbon and is effectively decolorized.
[0029]
As shown in FIG. 2, the purified water decolorized in the purified water storage chamber 9 is partially supplied to a water supply tank (not shown) of a toilet by a water supply means 28 having a water supply pump 26 and a water supply pipe 27. At the same time, the remainder is led out and stored in the purified water storage tank 2 through the outlet pipe 30. The purified water in the purified water storage chamber 9 is supplied to the water supply pipe 27 from the upper portions of the first and third middle-stream purification processing chambers 5 and 7 and the most downstream purification processing chamber 8 as necessary. Cleaning pipes 31 to 33 for cleaning the inner wall surfaces of the respective purification processing chambers 5 to 8 by supplying the cleaning water into the chambers 5 to 8 are provided in series.
[0030]
As shown in FIGS. 2 and 6, the uppermost-stream purification processing chamber 4, the first and third middle-stream purification processing chambers 5 and 7 located on the downstream side, and the most-downstream purification processing chamber 8 The tanks 1 are connected to each other via a reflux passage 35 provided at a lower portion of the side surface. The recirculation passage 35 is provided with first and second on-off valves 36 and 37 for opening and closing the recirculation passage 35, and by opening the first on-off valve 36 located on the upstream side of the recirculation passage 35. The uppermost stream purification processing chamber 4 is connected to the first middle stream purification processing chamber 5 and the second middle stream purification processing chamber 6. By maintaining the first on-off valve 36 in an open state and opening the second on-off valve 37 on the downstream side of the first on-off valve 36, the uppermost stream purification processing chamber 4, the third middle stream purification processing chamber 7, The lowermost purification processing chamber 8 is configured to be in communication.
[0031]
Openings 40 to 43 for cleaning or inspection are provided above the uppermost stream purification chamber 4, the first to third middle stream purification chambers 5 to 7, the most downstream purification chamber 8 and the purified water storage chamber 9, respectively. Is formed. The opening 40 formed in the uppermost stream purification processing chamber 4 is used as a suction port into which the suction hose of the drainage suction means is inserted. In a normal state, a closing lid (not shown) for closing the openings 40 to 43 so as to be able to open and close is provided. Further, the above-mentioned wastewater purification apparatus supplies purified water stored in the purified water storage chamber composed of the purified water storage tank 2 as cleaning water into the most upstream purification processing chamber 4 to thereby provide the most upstream purification processing chamber. There is provided a purified water supply means 47 having a water supply pump 45 and a water supply pipe 46 for cleaning the inner wall surface of the pump 4.
[0032]
As described above, the wastewater purification apparatus according to the present invention is derived from the plurality of purification processing chambers 4 to 8 that purify the wastewater discharged from the toilet stepwise and the most downstream purification processing chamber 8 located at the most downstream part thereof. Since it is provided with a purified water storage chamber 9 for storing purified water that has been purified and a purified water storage tank 2 for storing purified water derived from the purified water storage chamber 9, the purified water is discharged from the toilet through the discharge pipe 3. After the separated sludge components such as paper and coarse foreign matter in the waste water are separated and settled in the uppermost stream purification processing chamber 4, the first to third middle stream purification processing chambers 5 to 7 and the lowermost stream are separated from the uppermost stream purification processing chamber 4. In a state where the sludge component in the treated water sequentially led to the purification treatment chamber 8 is purified stepwise by the action of microorganisms, the purified water is led into the purified water storage chamber 9 and the purified water storage tank 2 and stored. can do. Therefore, the purified water stored in the purified water storage chamber 9 can be effectively used by supplying the purified water to the water supply tank of the toilet by the water supply means 28 or the like.
[0033]
An opening (suction port) 40 for sucking waste water is provided in the most upstream purification processing chamber 4 located at the most upstream part of the waste water purification apparatus, and is disposed downstream of the most upstream purification processing chamber 4. A recirculation means having a recirculation passage 35 for recirculating the treated water in the first to third middle-stream purification processing chambers 5 and 7 and the most downstream purification processing chamber 8 into the most upstream purification processing chamber; And a purified water supply means 47 for supplying purified water stored in a purified water storage chamber comprising the purified water into the most upstream purification treatment chamber 4, so that the suction hose of the drainage suction means provided in the vacuum car or the like is connected to the most upstream. After being inserted into the opening 40 of the purification chamber 4 and sucking the wastewater therein, the wastewater and treated water contained in each of the purification chambers 4 to 9 are sequentially led out to the outside. The walls can be cleaned.
[0034]
That is, after the wastewater accommodated in the uppermost stream purification processing chamber 4 is led out to the outside by the wastewater suction means, the first and second opening / closing valves (opening / closing means) 36, 37 provided in the reflux passage 35 are sequentially turned on. In the open state, by continuing the work of sucking the treated water introduced into the uppermost stream purification processing chamber 4 and leading it to the outside, the first to third middle stream purification processing chambers 5 to 7 and the most downstream purification are performed. The treated water refluxed from the inside of the processing chamber 8 into the most upstream purification processing chamber 4 via the above-mentioned reflux passage 35 can be sequentially led out. The cleaning water supplied from the purified water supply means 47 removes sludge components and the like adhering to the inner wall surface of the uppermost stream purification processing chamber 4 and also removes the sludge components and the like from the uppermost stream purification processing chamber 4 and the first and second middle stream purification processing. The chambers 5 and 6 can be filled with the cleaning water composed of the purified water.
[0035]
Therefore, complicated operations such as inserting the suction hoses in order into the openings 40 to 43 formed at the upper end portions of the respective purification processing chambers 4 to 8 to individually discharge the internal drainage or treated water to the outside. , The inside of each of the purification processing chambers 4 to 8 can be quickly and easily emptied. Therefore, at the time of holding an event such as an outdoor concert or at the time of occurrence of a disaster, it is possible to easily and properly perform the work of removing the drainage purification device temporarily installed at a predetermined location.
[0036]
Also, at the time of periodic inspection or repair of a drainage purification device for a public toilet regularly installed in a park or the like, the respective purification treatment chambers 4 to 8 are emptied, and the purification treatment tank 1 By cleaning the inside of each of the provided purification treatment chambers 4 to 8, there is an advantage that the periodic inspection work, the repair work, and the like can be easily performed. After the drainage and the treated water are derived, the purified water storage tank 4 is filled with purified water so that the inside of the uppermost stream purification chamber 4 and the first and second middle stream purification chambers 5 and 6 can be filled with the purified water. It is desirable to set the capacity of the second chamber 2 to a value substantially equal to the total capacity of the uppermost upstream purification chamber 4 and the first and second middle purification chambers 5 and 6.
[0037]
In the above-described embodiment, the purified water stored in the purified water storage chamber 9 of the purification tank 1 is supplied to the first and third middle-stream purification processing chambers 5 and 7 and the cleaning water from the upper part of the most downstream purification processing chamber 8. Since the purified water supply means including the water supply means 28 provided with the cleaning pipes 31 to 33 to be supplied respectively is provided, the treated water in the first to third midstream purification treatment chambers 5 to 7 and the most downstream purification treatment chamber 8 is provided. When the wastewater is refluxed into the uppermost stream purification processing chamber 4 and is sequentially led out to the outside, the sludge components and the like adhering to the inner wall surfaces of the respective purification processing chambers 5 to 8 are washed water supplied from the purified water supply means. Has the advantage that it can be more effectively removed.
[0038]
Further, in the above embodiment, at least the inner nacre b is removed and the porous prismatic layer c is exposed as the shell / coral contact material 15 filled in the third midstream purification treatment chamber 7 of the wastewater purifier. Since the used oyster shells and the like are used, the affinity between the shell / coral contact material 15 and the microorganisms that degrade sludge components in the treated water introduced into the third middle-stream purification treatment chamber 7 is increased, and It can be suitably propagated. Therefore, the sludge component in the treated water can be effectively decomposed and treated by the microorganisms propagated in the porous prismatic layer c to efficiently purify the wastewater. Moreover, since the function of decomposing the microorganisms can be exhibited from the beginning of the installation of the wastewater purification device, environmental pollution occurs when purified water purified by the wastewater purification device is discharged to the outside. This can be effectively prevented, and there is an advantage that water resources can be effectively used by using the purified water as toilet flush water.
[0039]
Further, when the treated water is acidified by aeration of the wastewater in the first middle-stream purification chamber 5 and the third middle-stream purification chamber 7, calcium carbonate (CaCO 2) is removed from the shells and corals. ₂ ) Can be rapidly dissolved to neutralize the treated water. In other words, the shell from which the nacre b has been removed has the property that the dissolution proceeds easily, and therefore there is an advantage that the acidified treated water can be effectively neutralized.
[0040]
In addition, since the treated water is neutralized in the third middle-stream purification treatment chamber 7 as described above, a large amount of protozoa such as solar worms and coelenterates can be generated and propagated. Therefore, bacteria such as Escherichia coli present in the treated water are extinct by feeding on the protozoa and the like, thereby effectively mixing bacteria into the purified treated water derived from the wastewater purifying apparatus. Can be prevented.
[0041]
Further, when the treated water contains a phosphorus component, the Ca ion released from the calcium carbonate and the phosphorus ion (HPO ₄ ), The treated water is quickly neutralized and calcium phosphate (Ca (OH) (PO4) ₃ ) Can be generated. And the above calcium phosphate (Ca (OH) (PO4) ₃ ) Is adsorbed on the activated carbon in the activated carbon container 22 disposed in the purified water storage chamber 9 and collected, so that it can be used as a fertilizer or the like.
[0042]
5Ca + 3HPO ₄ → Ca (OH) (PO ₄ ) ₃ + 3H ₂ O
The calcium phosphate (Ca (OH) (PO) ₄ ) ₃ ) Partially precipitates in the most downstream purification treatment chamber 8 and is adsorbed by the filter 17, and the remainder is adsorbed by activated carbon in the activated carbon adsorption chamber 22. In order to remove a trace amount of phosphorus components remaining in the treated water, it is desirable to have a structure in which a phosphorus adsorption cylinder filled with shells such as oyster shells is disposed in the activated carbon adsorption chamber 22.
[0043]
Further, in the above embodiment, the circulating means 25 as shown in FIG. 5 is provided, and the treated water in the purified water storage chamber 9 is sucked and discharged to the lower part of the activated carbon container 22 to thereby store the purified water. Since the treatment water is circulated in the chamber 9, the pigment component in the treatment water can be effectively adsorbed by the coal-based activated carbon contained in the activated carbon container 22 to improve the decolorizing effect. There are advantages.
[0044]
Further, in the above-described embodiment, the first middle flow purification processing chamber 5 in which the plastic contact material 12 is filled on the upstream side of the third middle flow purification processing chamber 7, and the treated water treated in the first middle flow purification processing chamber 5. A second middle-stream purification treatment chamber 6 composed of a precipitation chamber for precipitating impurities and the like is provided, and the wastewater is supplied to the third middle-stream purification treatment chamber 7 in a state where the wastewater has been purified to some extent. There is an advantage that shells such as oyster shells disposed in the processing chamber 7 can be effectively prevented from being soiled at an early stage, and that the shells are dissolved and disappear.
[0045]
In the above embodiment, the purified water storage tank 2 formed separately from the purified water storage chamber 9 provided at the most downstream portion of the purification treatment tank 1 is provided. Although the example in which the purified water derived through 30 is stored in the purified water storage tank 2 has been described, by connecting the purified water storage tank 2 to the purified water storage chamber 9, An integrated structure may be adopted, or a structure in which the purified water storage tank 2 is omitted by increasing the capacity of the purified water storage chamber 9 may be adopted.
[0046]
Further, a purified water supply means 47 for supplying purified water stored in the purified water storage tank 2 into the uppermost purification treatment chamber 4 is provided, and purified water stored in the purified water storage chamber 9 is supplied to the purified water storage chamber 9. 1, a purified water storage chamber 9 is provided instead of the above-described embodiment in which the water supply means 28 has cleaning pipes 31 to 33 for supplying cleaning water into the third middle-stream purification processing chambers 5 and 7 and the most downstream purification processing chamber 8. Purified water supply means for supplying purified water stored in the uppermost purification treatment chamber 4 and purified water stored in the purified water storage tank 2 to the first and third middle flow purification processing chambers 5, 7 Alternatively, a structure may be provided in which purified water supply means for supplying the purified water to the most downstream purification processing chamber 8 and the like is provided.
[0047]
Further, instead of the reflux means having the reflux passage 35 for returning the treated water in the first and third middle-stream purification processing chambers 5 and 7 into the uppermost-stream purification processing chamber 4, a treated water transfer pump or an air lift (air during compression) is used. , The treated water may be forcibly recirculated into the uppermost stream purification processing chamber 4.
[0048]
As shown in FIG. 7, a first suction pipe 51 for sucking purified water stored in the purified water storage chamber 9 and a second suction pipe for sucking purified water stored in the purified water storage tank 2. Purification having a pipe 52, a water supply pump 53 disposed upstream of a junction of the two suction pipes 51, 52, and cleaning pipes 54 to 57 for supplying cleaning water into the respective purification processing chambers 4 to 8. By providing the water supply means 58 and closing the open / close valves 55 and 56 provided on the suction pipes 51 and 52 and opening the other, the water supply pump 53 is operated to store the purified water. By sucking purified water in the chamber 9 or the purified water storage tank 2 and selectively supplying the purified water into the respective purification processing chambers 4 to 8, sludge components and the like attached to the inner wall surfaces of the respective purification processing chambers 4 to 8 May be sequentially removed.
[0049]
Further, as shown in FIG. 8, a plurality of activated carbon containers 22 a to 22 c are installed in a purified water storage chamber 9 provided at the most downstream portion of the purification tank 1, and the processing discharged from the circulation pump 23 is performed. Branch pipes 24a to 24c for discharging water to the lower portions of the activated carbon containers 22a to 22c, respectively, are provided. The activated carbon containers 22a to 22c to be used may be sequentially switched by controlling the opening and closing of the automatic opening and closing valves 62a to 62c provided in each of the branch pipes 24a to 24c.
[0050]
That is, by operating the circulating pump 23 in a state where the automatic open / close valve 62a provided in the branch pipe 24a is opened and the other automatic open / close valves 62b and 62c are closed, the treated water is measured by the pressure gauge 61. While supplying the treated water to the first activated carbon container 22a. When the processing capacity of the first activated carbon container 22a is reduced due to clogging or the like, the detection pressure of the pressure gauge 61 increases. Accordingly, the opening / closing control of the automatic opening / closing valves 62a to 62c is correspondingly performed. Is executed, the activated carbon containers 22a to 22c to be used are sequentially switched. With such a configuration, there is an advantage that the running cost can be reduced by appropriately setting the use time and frequency of each activated carbon container 22a to 22c.
[0051]
A plurality of activated carbon containers 22a to 22c are installed in the purified water storage chamber 9, and as shown in FIG. 9, treated water is supplied to and circulated below the activated carbon containers 22a to 22c, respectively. The circulating means 25a to 25c having a plurality of circulating pumps 23a to 23c and circulating pipes 24a to 24c may be separately provided, or each activated carbon container may be provided by a single large circulating pump (not shown) You may comprise so that treated water may be simultaneously supplied to the lower part of 22a-22c.
[0052]
Further, as shown in FIG. 10, the abnormality of the purified water stored in the purified water storage chamber including the purified water storage tank 2, that is, the amount of the purified water stored in the purified water storage tank 2 becomes equal to or more than the reference value. The lever 2 becomes full, or the quality of the stored purified water deteriorates, and abnormalities occur such as any of ph, chromaticity (turbidity), and residual chlorine concentration becoming lower than the reference value. An abnormality detection means 63 for detecting whether or not an error has occurred, and a transmission means 65 for transmitting an abnormality detection signal to the management unit 64 when an abnormality is detected by the abnormality detection means 63 may be provided. In the case of such a configuration, the purification function of the wastewater by the respective purification treatment chambers 4 to 8 provided in the purification treatment tank 1 is reduced, or a large amount of wastewater is introduced into the wastewater treatment tank 1 at a time. Accordingly, the administrator can properly recognize that the inspection work and the repair work and the like are necessary because the purification function of the wastewater by each of the purification processing chambers 4 to 8 is insufficient.
[0053]
As shown in FIG. 11, a drainage storage tank 66 is provided in parallel with the upstream-most purification processing chamber 4 of the purification processing tank 1, and the wastewater stored in the uppermost-stream purification processing chamber 4 is stored in the wastewater storage tank 66. By providing a transfer means 69 provided with a transfer pump 67 and a transfer pipe 68 for transferring the wastewater, the wastewater in the uppermost-stream purification treatment chamber 4 may be transferred to the wastewater storage tank 66 as necessary. .
[0054]
For example, the purified water storage tank 2 is filled with purified water according to the detection signal of the abnormality detection means 63 for detecting the abnormality of the purified water stored in the purified water storage tank 2, or the most upstream purification processing chamber. When it is detected that a large amount of wastewater has flowed into the pump 4 and an abnormality such as a decrease in the quality of the purified water has occurred, the control means 48 outputs the transfer pump 67 operation command signal to output the transfer pump 67 After the wastewater in the uppermost-stream purification treatment chamber 4 is transferred into the wastewater storage tank 66 by operating the 67, an operation command signal is output from the control means 48 to the water supply pump 46 of the purified water supply means 45, and this water supply is performed. By operating the pump 46, the purified water in the purified water storage tank 2 may be supplied to the inside of the most upstream purification treatment chamber 4 or the like of the purification treatment tank 1. In FIGS. 10 and 11, reference numeral 47a denotes a three-way switching valve for switching the supply direction of the purified water supplied to the purification processing chambers 4 to 6 by the purified water supply means 47.
[0055]
In the case of the above-described configuration, since the operation of sucking waste water and drawing it out to the outside can be performed at the same time, the cycle of performing inspection work and repair work of the purification tank 1 is approximately doubled. There is an advantage that it can be extended. In addition, instead of the above-described embodiment in which the wastewater in the uppermost-stream purification processing chamber 4 is forcibly transported into the wastewater storage tank 66 by the transfer pump 67, the wastewater in the uppermost-stream purification processing chamber 4 is caused to overflow. Thereby, the wastewater may be transferred into the wastewater storage tank 66.
[0056]
Further, as shown in FIG. 12, a plurality of wastewater containing sludge components such as generated wastewater or the like generated by finely pulverizing sewage discharged from a toilet or garbage with a disposer are purified in stages. A purification treatment tank 1 having purification treatment chambers 4 to 8, a purified water storage chamber 9 for storing purified water derived from the most downstream purification treatment chamber 8 located at the most downstream position, A purified water purified water storage tank 2 connected to the most downstream part, a sludge treatment tank 70 installed in parallel with the most upstream purification treatment chamber 4 located at the most upstream part of the purified water treatment tank 1, Transfer means 71 comprising a transfer pipe or the like for transferring the wastewater accommodated in the upstream purification treatment chamber 4 to the sludge decomposition tank, and the sludge in the wastewater transferred to the sludge decomposition tank 70 via the transfer means 71. An anaerobic decomposition chamber 72 for anaerobic decomposition of components, An aerobic decomposition chamber 73 for aerobically decomposing treated water derived from the anaerobic decomposition chamber 72 and a sedimentation separation chamber 74 for precipitating and separating the treated water derived from the aerobic decomposition chamber 73 The structure provided in the tank 70 may be adopted.
[0057]
The anaerobic decomposition chamber 72 decomposes, under anaerobic conditions, organic substances constituting the sludge component in the wastewater overflowed or forcibly transferred from the uppermost stream purification processing chamber 4 via the transfer means 71 to generate methane gas. Contain methane bacteria. The aerobic decomposition chamber 73 accommodates aerobic organisms that decompose residual organic components in the treated water derived from the anaerobic decomposition chamber 72 and nitrify ammonia. The treated water that has been decomposed by the aerobic biodecomposition chamber 73 and led out to the sedimentation separation chamber 74 is subjected to sedimentation treatment in the sedimentation section adjacent room 74, and then sprinkled or discharged, or is re-used as fire water or the like. Used.
[0058]
Further, the anaerobic decomposition chamber 72 is provided with a circulation pipe 75 for circulating a part of the drainage housed therein. By heating the sludge component in the wastewater circulating through the circulation pipe 75 to 70 ° C. or more by the waste heat or steam supplied from the boiler 76, the fiber or keratin in the sludge component is supplied to the circulation pipe 75. The temperature in the anaerobic decomposition chamber 72 is increased to a temperature suitable for medium-temperature fermentation by meta-fermentation bacteria of about 35 ° C to 37 ° C, or to about 53 ° C to 56 ° C. A heating means including a heater 77 for heating to a temperature suitable for high-temperature fermentation by the heat treatment is provided. The boiler 76 is configured to generate steam by heating purified water in the purified water storage tank 2 using methane gas generated in the anaerobic decomposition chamber 72 as fuel.
[0059]
According to the above configuration, the sludge component in the wastewater transferred from the uppermost stream purification treatment chamber 4 to the sludge decomposition tank 70 via the transfer means 71 is converted into the anaerobic decomposition chamber 72, the aerobic decomposition chamber 73, and the sedimentation decomposition. Since the sludge component can be efficiently decomposed by performing the purification treatment stepwise in the chamber 74, even if wastewater exceeding the treatment capacity of the purification treatment tank 1 is supplied, this can be easily performed. This has the advantage that the biogas such as methane gas generated in the anaerobic decomposition chamber 72 can be effectively used as fuel for the boiler 76 or the like.
[0060]
Further, in the above embodiment, the sludge component in the wastewater transferred to the anaerobic decomposition chamber 72 of the sludge decomposition tank 70 via the transfer means 17 is heated to 70 ° C. or more, so that the fibrous or nuclear components in the sludge component are heated. Since the heating means 77 for promoting the decomposition of the substance is provided, the sludge component in the wastewater transferred to the anaerobic decomposition chamber 72 of the sludge decomposition tank 70 is heated to a predetermined temperature to promote the decomposition of the fibrous and nuclear substances. By heating the inside of the anaerobic decomposition chamber 75 to a temperature suitable for the fermentation action of methane bacteria, there is an advantage that the wastewater can be more effectively purified.
[0061]
【The invention's effect】
As described above, the present invention relates to a plurality of purification treatment chambers for gradually purifying wastewater containing a sludge component such as sewage discharged from a toilet, and a most downstream purification treatment chamber located at the most downstream portion thereof. In a wastewater purification device having a purified water storage chamber for storing the derived purified water, a suction port for the stored water is provided in the most upstream purification processing chamber located at the most upstream portion, and the downstream of the most upstream purification processing chamber is provided. And a purified water supply means for supplying the purified water in the purified water storage chamber into the most upstream purification treatment chamber. The sludge adhering to the inner wall surface of the most upstream purification processing chamber by the washing water supplied from the above purified water supply means after the wastewater in the uppermost purification processing chamber is drawn out to the outside by the drain suction means provided in the vacuum car or the like. component By removing the advantage that the derivation of the waste water contained inside the most upstream cleaning process chamber, it is possible to perform the cleaning of the inner wall surface effectively.
[0062]
Further, the present invention provides a plurality of purification treatment chambers for gradually purifying wastewater containing sludge components such as sewage discharged from a toilet, and a purification treatment chamber derived from the most downstream purification treatment chamber located at the most downstream part thereof. In a wastewater purification device having a purified water storage chamber for storing water, a sludge treatment tank installed in parallel with the most upstream purification treatment chamber located at the most upstream part, and a wastewater accommodated in the above most upstream purification treatment chamber Transfer means for transferring the wastewater to the sludge decomposition tank, an anaerobic decomposition chamber for anaerobically decomposing sludge components in the wastewater transferred by the transfer means, and treated water derived from the anaerobic decomposition chamber. An aerobic decomposition chamber for performing aerobic decomposition processing and a sedimentation separation chamber for performing sedimentation separation processing of the treated water derived from the aerobic decomposition chamber are provided, so that wastewater exceeding the treatment capacity of the purification processing chamber is supplied. In case It is possible to purification treatment to.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an embodiment of a wastewater purification device according to the present invention.
FIG. 2 is a plan view showing a configuration of the wastewater purification device.
FIG. 3 is a sectional view of a shell constituting a shell contact material.
FIG. 4 is a sectional view showing a state in which a nacre of a shell is removed.
FIG. 5 is a perspective view showing a specific configuration of a circulating means provided in the most downstream purification processing chamber.
FIG. 6 is a front view showing a specific configuration of a return passage.
FIG. 7 is a plan view showing another embodiment of the waste water purification device according to the present invention.
FIG. 8 is an explanatory diagram showing an installation example of an activated carbon container.
FIG. 9 is an explanatory view showing another installation example of the activated carbon container.
FIG. 10 is a plan view showing still another embodiment of the wastewater purification device according to the present invention.
FIG. 11 is a plan view showing still another embodiment of the wastewater purification device according to the present invention.
FIG. 12 is a plan view showing still another embodiment of the wastewater purification device according to the present invention.
[Explanation of symbols]
1 Purification tank
2 Purified water storage tank (purified water storage room)
4 Upstream purification chamber
5 First midstream purification chamber
6 2nd midstream purification treatment room
7 Third midstream purification chamber
8 Final purification treatment room
9 Purified water storage room
28 Water supply means (purified water supply means)
35 Reflux passage (reflux means)
36, 37 on-off valve (reflux means)
47 Purified water supply means
48 control means
58 Purified water supply means
66 Drainage storage tank
70 Sludge decomposition tank
71 Anaerobic decomposition chamber
72 Aerobic decomposition chamber
73 Sedimentation separation chamber
77 heating means

Claims

A plurality of purification treatment chambers that gradually purify wastewater containing sludge components such as sewage discharged from toilets, and purified water that stores purified water derived from the most downstream purification treatment chamber located at the most downstream position. In the wastewater purification apparatus provided with a storage chamber, the suction port of the stored water is provided in the most upstream purification processing chamber located at the most upstream part, and the inside of the purification processing chamber disposed downstream of the most upstream purification processing chamber is provided. A wastewater purifying apparatus comprising: a recirculation means for circulating treated water into a most upstream purification processing chamber; and a purified water supply means for supplying purified water in the purified water storage chamber to the most upstream purification processing chamber.

Abnormality detecting means for detecting an abnormality of the purified water stored in the purified water storage chamber; and transmitting means for transmitting an abnormality detection signal to the management unit when the abnormality is detected by the abnormality detecting means. The wastewater purification device according to claim 1, wherein

The drainage storage tank is provided in parallel with the upstream-most purification chamber, and a transfer means for transferring wastewater contained in the upstream-most purification chamber into the wastewater storage tank is provided. The wastewater purifying device according to the above.

A storage amount detecting means for detecting the storage amount of the purified water stored in the purified water storage chamber, and it is detected that the stored amount of the purified water is equal to or more than a reference value according to a detection signal of the storage amount inspection means. The wastewater purifying apparatus according to claim 3, further comprising control means for controlling the transfer of the wastewater stored in the uppermost stream purification chamber to the wastewater storage tank by the transfer means.

A plurality of purification treatment chambers that gradually purify wastewater containing sludge components such as sewage discharged from toilets, and purified water that stores purified water derived from the most downstream purification treatment chamber located at the most downstream position. In a wastewater purification device having a storage chamber, a sludge treatment tank installed in parallel with the most upstream purification treatment chamber located at the most upstream part, and the wastewater stored in the most upstream purification treatment chamber is transferred to a sludge decomposition tank. And an anaerobic decomposition chamber for performing anaerobic decomposition of sludge components in the wastewater transferred by the transfer means, and an aerobic decomposition process for treated water derived from the anaerobic decomposition chamber. A wastewater purifying apparatus comprising: an aerobic decomposition chamber; and a sedimentation separation chamber for performing sedimentation separation of treated water derived from the aerobic decomposition chamber.

A heating means is provided for heating the sludge component in the wastewater transferred to the anaerobic decomposition chamber of the sludge decomposition tank to 70 ° C. or more to promote the decomposition of fibrous and nuclear materials in the sludge component. The drainage purification device according to claim 5, wherein