JPH01171698A - Purification process of organic waste water - Google Patents
Purification process of organic waste waterInfo
- Publication number
- JPH01171698A JPH01171698A JP62330984A JP33098487A JPH01171698A JP H01171698 A JPH01171698 A JP H01171698A JP 62330984 A JP62330984 A JP 62330984A JP 33098487 A JP33098487 A JP 33098487A JP H01171698 A JPH01171698 A JP H01171698A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- water
- suspended
- sludge
- septic tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000000746 purification Methods 0.000 title abstract description 21
- 239000010815 organic waste Substances 0.000 title description 4
- 239000002351 wastewater Substances 0.000 claims abstract description 31
- 238000011001 backwashing Methods 0.000 claims abstract description 11
- 239000010802 sludge Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 19
- 239000008187 granular material Substances 0.000 abstract description 19
- 239000000378 calcium silicate Substances 0.000 abstract description 12
- 229910052918 calcium silicate Inorganic materials 0.000 abstract description 12
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 abstract description 12
- 244000005700 microbiome Species 0.000 abstract description 9
- 239000000843 powder Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005273 aeration Methods 0.000 abstract description 4
- 210000002700 urine Anatomy 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract 5
- 241001465754 Metazoa Species 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 238000007790 scraping Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 20
- 238000004062 sedimentation Methods 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000000126 substance Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 244000144972 livestock Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010797 grey water Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
Description
【発明の詳細な説明】
発明の目的
（産業上の利用分野）
本発明は家畜尿汚水、生活雑排水、下水等の有機性排水
を浄化する浄化処理方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a purification method for purifying organic wastewater such as livestock urine wastewater, gray water, and sewage.
（従来の技術及び発明が解決しようとする問題点）本発
明者等は、すでに前記各種有機性排水の浄化処理方法と
して、第２図に示すように、第１沈澱槽１、ケイ酸カル
シウム水和物を主成分とする多孔質粒状体が充填された
浄化槽２、及び第２沈澱槽３に、有機性排水りを順次通
すとともに、前記両沈澱槽１，３に堆積した汚泥Ｍを汚
泥沈澱槽４に導き、その後汚泥処理する方法を提案した
。(Problems to be Solved by the Prior Art and the Invention) The present inventors have already developed a method for purifying the various types of organic wastewater, as shown in FIG. The organic wastewater is sequentially passed through the septic tank 2 filled with porous granules mainly composed of silica and the second settling tank 3, and the sludge M deposited in both the settling tanks 1 and 3 is subjected to sludge sedimentation. We proposed a method in which the sludge is introduced into tank 4 and then treated as sludge.
この方法によれば、浄化槽２に充填した前記多孔質粒状
体の表面に生物膜が形成され、その生物膜と同多孔質粒
状体とから？容出するカルシウムイオン等の化学的作用
によって、有機性排水り中の打機物質、窒素、リン等が
ｔｌｉ捉されるので、有機性排水りの浄化に優れた効果
を発揮する。According to this method, a biofilm is formed on the surface of the porous granules filled in the septic tank 2, and is formed from the biofilm and the porous granules. Due to the chemical action of the ejected calcium ions, etc., the batter substances, nitrogen, phosphorus, etc. in the organic waste water are captured, resulting in an excellent effect in purifying the organic waste water.
しかしながら、この方法をある程度の間開継続して行う
と、多孔質粒状体間に有機性排水り中の浮遊物質や微生
物の死骸が付着し、これらが多孔質粒状体の空隙を閉塞
する。その結果、多孔質粒状体の浄化性能が低下するの
で、常法に従って前記浄化槽２の下部から新鮮な水を導
入して、浄化槽２のいわゆる逆洗を行う必要がある。こ
のとき用いる逆洗水としては、前記第２沈澱槽３により
処理及び排出された処理水Ｗ１の一部を再利用し、同処
理水Ｗ１を前記浄化槽２に戻している。However, if this method is continued for a certain period of time, suspended matter in organic waste water and dead microorganisms adhere between the porous granules, and these clog the voids in the porous granules. As a result, the purification performance of the porous granules decreases, so it is necessary to introduce fresh water from the lower part of the septic tank 2 according to a conventional method to perform so-called backwashing of the septic tank 2. As the backwash water used at this time, a part of the treated water W1 treated and discharged by the second settling tank 3 is reused, and the treated water W1 is returned to the septic tank 2.
前記のようにして浄化槽２内に戻されて逆洗が行われた
後、同浄化槽２から排出される懸濁水Ｗ２には、多孔質
粒状体間に付着していた浮遊物質や微生物の死骸が混入
している。そのため、通常は前記懸濁水Ｗ２を汚泥沈澱
槽４に導いて前記汚泥Ｍとともに処理している。After being returned to the septic tank 2 and backwashed as described above, the suspended water W2 discharged from the septic tank 2 contains suspended solids and dead microorganisms that have adhered between the porous particles. It's mixed in. Therefore, the suspended water W2 is normally introduced into the sludge settling tank 4 and treated together with the sludge M.
ところで、前記従来法においては、有機性排水り中を浮
遊する浮遊物質が、第１沈澱槽１によって十分除去され
ないまま浄化槽２へ流入しているので、その浄化槽２内
の多孔質粒状体間において目づまりが生じ、浄化能力が
低下してしまう。そのため、浄化能力を維持するには、
第１沈澱槽１の容計を大きくするか、逆洗回数を増やし
て汚泥沈°澱槽４を太き（しなければならないという問
題がある。By the way, in the conventional method, the suspended solids floating in the organic wastewater flow into the septic tank 2 without being sufficiently removed by the first settling tank 1. This will cause clogging and reduce purification ability. Therefore, to maintain purification ability,
There is a problem that the sludge settling tank 4 must be made thicker by increasing the capacity of the first settling tank 1 or by increasing the number of times of backwashing.
そこで、本発明者等は前記問題点を解決するため鋭意研
究した結果、逆洗後の懸濁水Ｗ２中にケイ酸カルシウム
水和物の微粉が含まれていることから、この懸濁水Ｗ２
を前記第１沈澱槽１に返還すれば、その微粉により前記
浮遊物質が捕捉され、第１沈澱槽１内で同浮遊物質の沈
降が促進されるという事実を見出し、本発明に到達した
。Therefore, as a result of intensive research to solve the above problem, the present inventors found that the suspension water W2 after backwashing contained fine powder of calcium silicate hydrate.
The present invention was achieved by discovering the fact that when the suspended solids are returned to the first sedimentation tank 1, the suspended solids are captured by the fine powder, and the sedimentation of the suspended solids is promoted within the first sedimentation tank 1.
従って、本発明の目的は逆洗後の懸濁水に含まれるケイ
酸カルシウム水和物を利用して、第１沈澱槽内の浮遊物
質の沈降を促進することができ、ひいては浄化槽内の多
孔質粒状体に付着する浮遊物質の量を低減して、浄化槽
での浄化効率を高めることができる有機性排水の浄化処
理方法を提供することにある。Therefore, an object of the present invention is to use calcium silicate hydrate contained in the suspended water after backwashing to promote the settling of suspended solids in the first settling tank, and to improve the porous structure in the septic tank. An object of the present invention is to provide a method for purifying organic wastewater, which can reduce the amount of suspended solids adhering to granules and improve purification efficiency in a septic tank.
発明の構成
（問題点を解決するための手段）
そこで、前記目的を達成すべく本発明は、第１沈澱槽、
ケイ酸カルシウム水和物を主成分とする多孔質粒状体が
収容された浄化槽及び第２沈澱槽に、有機性排水を順次
通すとともに、前記両沈澱槽に堆積した汚泥を汚泥沈澱
槽に導いて汚泥処理することからなる有機性排水の浄化
処理方法において、前記浄化槽を逆洗した後、該浄化槽
から排出される懸”濁水を前記第１沈澱槽に導入する有
機性排水の浄化処理方法をその要旨とするものである。Structure of the Invention (Means for Solving Problems) Therefore, in order to achieve the above object, the present invention comprises a first settling tank,
Organic wastewater is sequentially passed through a septic tank and a second settling tank in which porous granules containing calcium silicate hydrate as a main component, and the sludge accumulated in both settling tanks is guided to the sludge settling tank. A method for purifying organic wastewater comprising sludge treatment, which comprises backwashing the septic tank and then introducing suspended turbid water discharged from the septic tank into the first sedimentation tank. This is a summary.
（作用）
浄化槽を逆洗すると、その逆洗水により同浄化槽内に充
填されたケ・イ酸カルシウム永和物の表面が削りとられ
る。そして、このとき削りとられたケイ酸カルシウム水
和物の微粉は、浄化槽から排出されるＱ、 Ｅ＋氷水中
含有された状態で第１沈澱槽に導入される。この導入さ
れた懸濁水は、第１沈澱槽における有機性排水中の浮遊
物質を捕捉し、これを沈降させる。(Function) When a septic tank is backwashed, the surface of the calcium silicate permanent material filled in the septic tank is scraped off by the backwash water. Then, the fine powder of calcium silicate hydrate scraped off at this time is introduced into the first sedimentation tank while being contained in Q, E + ice water discharged from the septic tank. This introduced suspension water traps suspended solids in the organic wastewater in the first settling tank and causes them to settle.
（実施例）
以下、本発明を具体化した一実施例を図面に基づいて説
明する。(Example) Hereinafter, an example embodying the present invention will be described based on the drawings.
本実施例における有機性排水りは家畜尿排水からなり、
浮遊物質（ＳＳ）、リン、窒素等を含有したものである
。この有機性排水りは第１図に示すように、スクリーン
５を介して第１沈澱槽ｌに流入される。前記スクリーン
５は通常２〜４インチの大きさの網目を有する金網から
なり、有機性排水り中の比較的大きな固形物を除去して
、これらが第１沈澱槽１内へ入り込むのを防止している
。The organic wastewater in this example consists of livestock urine wastewater,
It contains suspended solids (SS), phosphorus, nitrogen, etc. This organic wastewater flows into the first settling tank 1 through a screen 5, as shown in FIG. The screen 5 usually consists of a wire mesh having a mesh size of 2 to 4 inches, and is used to remove relatively large solids in the organic wastewater and prevent them from entering the first settling tank 1. ing.
第１沈澱槽１内へ流入した有機性排水りのうち、比較的
比重の大きな成分はその自重により沈降し、汚泥Ｍとな
って堆積する。この汚泥Ｍは汚泥沈澱槽４へ導かれる。Among the organic wastewater that has flowed into the first settling tank 1, components with relatively high specific gravity settle due to their own weight, and are deposited as sludge M. This sludge M is guided to a sludge settling tank 4.
また、汚泥Ｍが除去された有機性排水りは、調整槽６で
ｐＨや水温が調整されて浄化槽２内へ流入される。Further, the organic wastewater from which the sludge M has been removed has its pH and water temperature adjusted in the adjustment tank 6, and then flows into the septic tank 2.
ｎ：ｊ記浄化槽２内には粒径５〜１０ｍ１、比重０．５
、空隙率５０〜９０％のケイ酸カルシウム水和物を主成
分とする多孔質粒状体が充填されている。この多孔質粒
状体はけい石、けい砂等のケイ酸質原料及び石灰質原料
を主原料としてこれらを１弱合した後、適量の水及び気
泡剤等を加えて発泡させ、約１８０℃の飽和水蒸気でオ
ートクレーブ養生して形成したものである。このように
して形成された多孔質粒状体はその表面に大きな凹凸を
有し、同凹凸に微生物が付着しやすくなっている。また
、同多孔質粒状体はｐＨ緩衝能を備えていて有機性排水
のｐＨを８前後に維持することが可能である。In the septic tank 2, n: j has a particle size of 5 to 10 m1 and a specific gravity of 0.5.
, is filled with porous particles mainly composed of calcium silicate hydrate with a porosity of 50 to 90%. This porous granular material is made from silicic acid raw materials such as silica stone and silica sand, and calcareous raw materials, which are mixed together to a certain extent, then foamed by adding an appropriate amount of water and a foaming agent, etc., to a saturated temperature of about 180°C. It is formed by autoclave curing with steam. The porous granules thus formed have large irregularities on their surfaces, and microorganisms tend to adhere to the irregularities. Furthermore, the porous granules have a pH buffering ability and can maintain the pH of organic wastewater at around 8.
前記浄化槽２内には多数の微生物が培養されており、こ
れらの微生物は前記多孔質粒状体の表面に付着して生物
膜を形成し、浄化槽２内に流入してくる有機性排水り中
の有機物質等を生分解する。A large number of microorganisms are cultured in the septic tank 2, and these microorganisms adhere to the surface of the porous granules to form a biofilm, which absorbs the organic wastewater flowing into the septic tank 2. Biodegrades organic substances, etc.
また、前記浄化槽２下部にはエアポンプが接続されてお
り、同浄化槽２内へ空気を強制的に送って、すなわち曝
気を行って前記微生物による生分解を促進するようにし
ている。Further, an air pump is connected to the lower part of the septic tank 2 to forcefully send air into the septic tank 2, that is, perform aeration to promote biodegradation by the microorganisms.
前記浄化槽２において微生物によって処理された有機性
排水りは第２沈澱槽３へ送られ、同有機性排水り中の生
物学的に活性な微生物フロックは沈降し、汚泥Ｍとして
堆積する。この汚泥Ｍは前記第１沈澱槽１内に堆積した
汚泥Ｍとともに汚泥沈澱槽４へ導かれる。汚泥Ｍが除去
されたほぼ透明な処理水Ｗ１は消毒槽７に送られ、同処
理水Ｗｌ中の大腸菌などが消毒された後、河川等に放流
される。The organic wastewater treated with microorganisms in the septic tank 2 is sent to the second settling tank 3, where biologically active microbial flocs in the organic wastewater settle and accumulate as sludge M. This sludge M is guided to the sludge settling tank 4 together with the sludge M deposited in the first settling tank 1. The almost transparent treated water W1 from which the sludge M has been removed is sent to the disinfection tank 7, and after E. coli and other bacteria in the treated water W1 are disinfected, it is discharged into a river or the like.
また、前記第２沈澱槽３から排出されて消毒槽７へ送ら
れる処理水Ｗ１の一部は前記浄化槽２の下部に移送され
、逆洗水として同浄化槽２内へ流入可能となっている。Further, a part of the treated water W1 discharged from the second sedimentation tank 3 and sent to the disinfection tank 7 is transferred to the lower part of the septic tank 2, and can flow into the septic tank 2 as backwash water.
そのため、浄化槽２内に充填した多孔質粒状体を、この
処理水Ｗ１によって適宜逆洗することができる。そして
、前記のように逆洗を行うことにより生じた懸濁水Ｗ２
は、同浄化槽２の上部から排出され前記第１沈澱槽１へ
導かれる。Therefore, the porous granules filled in the septic tank 2 can be appropriately backwashed with the treated water W1. Then, the suspended water W2 generated by backwashing as described above
is discharged from the upper part of the septic tank 2 and guided to the first settling tank 1.
なお、第１沈澱槽１及び第２沈澱槽３内にそれぞれ堆積
した汚泥Ｍは汚泥沈澱槽４に導かれ、汚泥濃縮槽８で濃
縮処理された後、脱水、焼却処理される。Note that the sludge M deposited in the first settling tank 1 and the second settling tank 3 is led to the sludge settling tank 4, concentrated in the sludge thickening tank 8, and then dehydrated and incinerated.
ところで、本実施例の浄化処理方法をある程度の期間′
ｍ続して行うと、浄化槽２内に充填された多孔質粒状体
間に浮遊物質が付着して、その浄化処理能力が低下する
。この場合には、従来の浄化処理方法と同様にして第２
沈澱槽３から排出される処理水Ｗ１の一部を用いて逆洗
を行い、多孔質粒状体を洗浄する。このときには浄化処
理装置の通常運転時よりも多くのエア量で曝気を行う。By the way, the purification method of this example was applied for a certain period of time.
If this process is repeated for m consecutive times, suspended solids will adhere between the porous particles filled in the septic tank 2, reducing its purification performance. In this case, the second purification treatment method can be
Backwashing is performed using a portion of the treated water W1 discharged from the settling tank 3 to wash the porous granules. At this time, aeration is performed using a larger amount of air than during normal operation of the purification treatment apparatus.
すると、前記多孔質粒状体の表面に付着していた有機物
質、微生物の死骸等が同多孔質粒状体から分離するとと
もに、逆洗時の激しい曝気によって、多孔質粒状体を構
成しているケイ酸カルシウム水和物の表面部分が若干量
削りとられる。このように、分離された有機物質や削り
とられたケイ酸カルシウム水和物の微粉は、懸濁水Ｗ２
中に含有された状態で浄化槽２から排出され、第１沈澱
槽１へ移送される。Then, organic substances, dead microorganisms, etc. that had adhered to the surface of the porous granules are separated from the porous granules, and the silica that makes up the porous granules is removed by intense aeration during backwashing. A small amount of the surface of the calcium acid hydrate is scraped off. In this way, the separated organic substances and the scraped fine powder of calcium silicate hydrate are collected in the suspension water W2.
It is discharged from the septic tank 2 while being contained therein and transferred to the first sedimentation tank 1.
前記第１沈澱槽１内へ移送された懸濁水Ｗ２中のケイ酸
カルシウム水和物の微粉は、第１沈澱槽１内で浮遊して
いる微細でかつ沈澱しに（い浮遊物質を捕捉し、両者が
一体となって沈降する。The fine powder of calcium silicate hydrate in the suspension water W2 transferred to the first settling tank 1 is used to capture fine and unprecipitated suspended substances floating in the first settling tank 1. , the two settle together.
なお、本実施例の効果を確認するため、浄化槽２から排
出された懸濁水Ｗ２を第１沈澱槽ｌへ導いた場合（Ａ）
の調整槽６へ流入するＢＯＤ、浮遊物質、窒素、リンの
それぞれの量と、同じく浄化槽２から排出された懸濁水
Ｗ２を第１沈澱槽１ではなく、汚泥沈澱槽４へ導いた場
合（Ｂ）の各成分の量とを測定した。この実験において
は、有機性排水りとして豚舎排水を用い、浄化槽２に対
し、通常の浄化処理装置運転時の６倍量のエアで５分間
曝気しなから逆洗を行い、その後、懸濁液を全て取り出
した状態で懸濁水Ｗ２を第１沈澱槽１又は汚泥沈澱槽４
へ導いた。その測定結果を次表に示す。In addition, in order to confirm the effect of this example, when the suspended water W2 discharged from the septic tank 2 was guided to the first settling tank 1 (A)
The respective amounts of BOD, suspended solids, nitrogen, and phosphorus flowing into the adjustment tank 6, and the case where the suspended water W2 discharged from the septic tank 2 are led to the sludge settling tank 4 instead of the first settling tank 1 (B ) were measured. In this experiment, pigsty wastewater was used as the organic wastewater, and the septic tank 2 was aerated for 5 minutes with six times the amount of air used in normal septic treatment equipment operation, and then backwashed. The suspended water W2 is transferred to the first sedimentation tank 1 or the sludge sedimentation tank 4 with all the suspended water W2 taken out.
led to. The measurement results are shown in the table below.
表
この測定結果から、浄化槽２から排出される懸濁水Ｗ２
を第１沈澱槽１へ導いた方が、汚泥沈澱槽４へ導いた場
合に比べて、ＢＯＤ、浮遊物質、窒素、リンのいずれの
成分に関してもこれらが多く除去されていることがわか
る。Table From this measurement result, suspended water W2 discharged from septic tank 2
It can be seen that a greater amount of BOD, suspended solids, nitrogen, and phosphorus were removed when the sludge was introduced into the first settling tank 1 than when it was led into the sludge settling tank 4.
このように、本実施例の浄化処理方法によれば、浄化槽
２から排出された処理水Ｗｌを汚泥沈澱槽４に導いた従
来の浄化処理方法とは異なり、有機性排水りにともなっ
て第２沈澱槽３まで到達する浮遊物質の量が少なくなる
。また、本実施例では浮遊物質が第１沈澱槽１において
多く沈澱するので、浄化槽２へ送られる浮遊物質の量は
従来の浄化処理方法におけるそれよりも少なくなり、従
って、多孔質粒状体への付着量も少なくなり浄化処理効
率が向上する。As described above, according to the purification treatment method of this embodiment, unlike the conventional purification treatment method in which the treated water Wl discharged from the septic tank 2 is led to the sludge settling tank 4, the second The amount of suspended solids reaching the settling tank 3 is reduced. In addition, in this example, since a large amount of suspended solids is settled in the first settling tank 1, the amount of suspended solids sent to the septic tank 2 is smaller than that in the conventional purification treatment method, and therefore, the amount of suspended solids sent to the septic tank 2 is smaller than that in the conventional purification treatment method. The amount of adhesion is also reduced and the purification efficiency is improved.
なお、本発明は前記実施例の構成に限定されるものでは
なく、例えば次のように発明の趣旨から逸脱しない範囲
で任意に変更して具体化することもできる。It should be noted that the present invention is not limited to the configuration of the above-mentioned embodiments, and can be modified and embodied as desired without departing from the spirit of the invention, for example, as follows.
（１）本実施例の浄化処理方法は家畜尿汚水以外にも、
生活雑排水、下水等の各種有機性排水の浄化処理に具体
化することができる。(1) The purification method of this example can be applied to other than livestock urine wastewater.
It can be applied to the purification treatment of various organic wastewater such as gray water and sewage.
（２）前記実施例では第２沈澱槽３から排出される処理
水Ｗ１の一部を逆洗水として浄化槽２へ戻したが、浄化
槽２から排出される排水を逆洗水として用いることもで
きる。(2) In the above embodiment, a part of the treated water W1 discharged from the second settling tank 3 was returned to the septic tank 2 as backwash water, but the waste water discharged from the septic tank 2 can also be used as backwash water. .
発明の効果
以上詳述したように、本発明によれば逆洗後の懸濁水に
含まれるケイ酸カルシウム水和物を利用して、第１沈澱
槽内の浮遊物質の沈降を促進することができ、ひいては
浄化槽内の多孔質粒状体に付着する浮遊物質の量を低減
して浄化槽での浄化効率を高めることができるという優
れた効果を奏する。Effects of the Invention As detailed above, according to the present invention, calcium silicate hydrate contained in the suspended water after backwashing can be used to promote the settling of suspended solids in the first settling tank. This has the excellent effect of reducing the amount of suspended solids adhering to the porous particles in the septic tank and increasing the purification efficiency in the septic tank.
第１図は本発明を具体化した有機性排水の浄化処理方法
を示すブロック図、第２図は従来技術を示すブロック図
である。
■・・・第１ａ：澱槽、２・・・浄化槽、３・・・第２
沈澱槽、４・・・汚泥沈澱槽、Ｄ・・・有機性排水、Ｍ
・・・汚泥、Ｗ２・・・懸濁水。FIG. 1 is a block diagram showing a method for purifying organic wastewater embodying the present invention, and FIG. 2 is a block diagram showing a conventional technique. ■... 1st a: Slag tank, 2... Septic tank, 3... 2nd
Sedimentation tank, 4...Sludge settling tank, D...Organic wastewater, M
...Sludge, W2...Suspended water.
Claims (1)
分とする多孔質粒状体が収容された浄化槽（２）及び第
２沈澱槽（３）に、有機性排水（Ｄ）を順次通すととも
に、前記両沈澱槽（１、３）に堆積した汚泥（Ｍ）を汚
泥沈澱槽（４）に導いて汚泥処理することからなる有機
性排水の浄化処理方法において、 前記浄化槽（２）を逆洗した後、該浄化槽（２）から排
出される懸濁水（Ｗ２）を前記第１沈澱槽（１）に導入
することを特徴とする有機性排水の浄化処理方法。[Scope of Claims] 1. The organic In a method for purifying organic wastewater, the method comprises sequentially passing the organic wastewater (D) and guiding the sludge (M) deposited in the settling tanks (1, 3) to the sludge settling tank (4) for sludge treatment. , A method for purifying organic wastewater, characterized in that after backwashing the septic tank (2), suspended water (W2) discharged from the septic tank (2) is introduced into the first settling tank (1). .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62330984A JPH0675712B2 (en) | 1987-12-26 | 1987-12-26 | Purification method of organic wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62330984A JPH0675712B2 (en) | 1987-12-26 | 1987-12-26 | Purification method of organic wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01171698A true JPH01171698A (en) | 1989-07-06 |
| JPH0675712B2 JPH0675712B2 (en) | 1994-09-28 |
Family
ID=18238535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62330984A Expired - Fee Related JPH0675712B2 (en) | 1987-12-26 | 1987-12-26 | Purification method of organic wastewater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0675712B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0399000U (en) * | 1990-01-24 | 1991-10-15 | ||
| CN113480083A (en) * | 2021-04-29 | 2021-10-08 | 内蒙古兴田水环境科学技术研究院 | Adopt AO and MBR's domestic sewage treatment plant |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285576A (en) * | 2017-08-18 | 2017-10-24 | 马鞍山市顺达环保设备有限公司 | A kind of buried sewage purification processing system |
-
1987
- 1987-12-26 JP JP62330984A patent/JPH0675712B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0399000U (en) * | 1990-01-24 | 1991-10-15 | ||
| CN113480083A (en) * | 2021-04-29 | 2021-10-08 | 内蒙古兴田水环境科学技术研究院 | Adopt AO and MBR's domestic sewage treatment plant |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0675712B2 (en) | 1994-09-28 |
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