JP3268385B2 - Phosphorus-containing organic wastewater treatment equipment - Google Patents
Phosphorus-containing organic wastewater treatment equipmentInfo
- Publication number
- JP3268385B2 JP3268385B2 JP11186997A JP11186997A JP3268385B2 JP 3268385 B2 JP3268385 B2 JP 3268385B2 JP 11186997 A JP11186997 A JP 11186997A JP 11186997 A JP11186997 A JP 11186997A JP 3268385 B2 JP3268385 B2 JP 3268385B2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- phosphorus
- containing organic
- treatment
- carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、食品工場、養豚
場、公共下水場等、リン含有有機性廃水などの有機性の
汚水を処理する、リン含有有機性汚水処理装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phosphorus-containing organic wastewater treatment apparatus for treating organic wastewater such as phosphorus-containing organic wastewater in a food factory, a pig farm, a public sewage plant, and the like.
【０００２】[0002]
【従来の技術】従来より、リン含有有機性汚水の処理方
法としては、凝集沈殿法あるいは凝集濾過法などが知ら
れている。これらの方法は、高度処理施設として古くか
らもちいられている。その他の汚水処理方法としては、
晶析法、土壌処理法等があり、特殊なものとしては吸着
法、限外濾過法等がある。これらの方法による脱リン技
術は、生物化学的酸素要求量（ＢＯＤ）が大きい等、経
費面および維持の管理が難しく、薬剤の供給構造と制御
機構を簡素化する必要があった。2. Description of the Related Art Conventionally, a coagulation sedimentation method or a coagulation filtration method has been known as a method for treating phosphorus-containing organic wastewater. These methods have long been used as advanced treatment facilities. Other sewage treatment methods include:
There are a crystallization method and a soil treatment method, and special methods include an adsorption method and an ultrafiltration method. The dephosphorization techniques by these methods are difficult to manage in terms of cost and maintenance, such as a large biochemical oxygen demand (BOD), and have to simplify the drug supply structure and control mechanism.
【０００３】この問題を解決する方法の一つとして、電
気化学的に金属を溶解し、凝集イオンを発生させる電解
法が案出された。しかしながらこの電解法は、ｐＨの調
節、電極素材等に関して、いまだ解決すべき問題があっ
た。As one of the methods for solving this problem, an electrolysis method has been devised in which a metal is dissolved electrochemically to generate aggregated ions. However, this electrolysis method still has problems to be solved with respect to pH adjustment, electrode material and the like.
【０００４】[0004]
【発明が解決しようとする課題】本発明はこの点に鑑み
てなされたものであり、ｐＨの調節、電極素材等に問題
がなく、しかもＢＯＤの少ないリン含有有機性汚水処理
装置を提供しようとするものである。DISCLOSURE OF THE INVENTION The present invention has been made in view of this point, and aims to provide a phosphorus-containing organic sewage treatment apparatus which has no problems in pH adjustment, electrode materials and the like and has a small BOD. Is what you do.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記課題を解
決するための手段として、請求項１に記載された発明で
は、リン含有有機性汚水を貯留してほぼ均一な成分に調
整する調整槽と、該調整槽で調整された後の有機性汚水
を浮遊微生物もしくは固定床担体あるいは半固定床担体
に付着した微生物により活性汚泥処理をする処理槽と、
該処理槽で処理された水から混入している浮遊物を沈降
分離する沈殿槽からなるリン含有有機性汚水処理装置に
おいて、前記処理槽の槽内水面下にカキ殻等の沈降性担
体を充填したろ床部と幕状多孔質担体を垂下したろ床部
とを、隔壁により区画し、幕状多孔質担体を垂下したろ
床部に原水流入口および処理水流出口を設けると共に、
前記カキ殻等の沈降性担体のろ床部の下方部に酸素含有
ガスの散気装置を配備したことを特徴とする。According to the present invention, as a means for solving the above-mentioned problems, according to the first aspect of the present invention, there is provided a method for storing phosphorus-containing organic sewage to adjust it to a substantially uniform component. A tank, and a treatment tank for performing an activated sludge treatment on the organic sewage after being adjusted in the adjustment tank with suspended microorganisms or microorganisms attached to a fixed bed carrier or semi-fixed bed carrier.
In a phosphorus-containing organic sewage treatment apparatus comprising a sedimentation tank for sedimenting and separating suspended matters mixed in from the water treated in the treatment tank, a sedimentable carrier such as an oyster shell is filled under the water surface in the treatment tank. A filter bed portion and a filter bed portion from which the curtain-shaped porous carrier is hung are partitioned by partition walls, and a raw water inlet and a treated water outlet are provided on the filter bed portion from which the curtain-shaped porous carrier is hung,
An oxygen-containing gas diffusing device is provided below the filter bed of the sedimentable carrier such as the oyster shell.
【０００６】また請求項２に記載された発明では、請求
項１に記載されたものにおいて、前記処理槽の底部と散
気装置の中間部に金属マグネシウム電極を使用した電解
装置を設置すると共に、処理槽下部に設けた返送汚泥用
配管から小口径の枝管を処理槽下端の少し上部に接続
し、その先端を処理槽の内壁に沿うように曲げたことを
特徴とする。According to a second aspect of the present invention, in the first aspect, an electrolytic apparatus using a metal magnesium electrode is installed between the bottom of the processing tank and an intermediate portion of the diffuser. A small-diameter branch pipe is connected to a slightly upper portion of the lower end of the processing tank from the return sludge pipe provided at the lower part of the processing tank, and the tip thereof is bent along the inner wall of the processing tank.
【０００７】原水であるリン含有有機性汚水は、幕状多
孔質担体の間を垂下した外槽に流入し、幕状多孔質担体
の間を流下する。その間、上層部では、好気性微生物に
より、下層になるに従って嫌気性微生物によって有機物
が分解されながら底部に至る。分解された有機化合物中
のリン酸イオンは電解装置から溶出したマグネシウム−
イオンと反応して不溶性のリン化合物となって沈降す
る。[0007] The phosphorus-containing organic sewage, which is raw water, flows into an outer tank that hangs down between the curtain-shaped porous carriers, and flows down between the curtain-shaped porous carriers. Meanwhile, in the upper part, the organic matter is decomposed by the anaerobic microorganisms toward the bottom part by the aerobic microorganisms in the lower part and reaches the bottom part. Phosphate ions in the decomposed organic compound are magnesium-eluted from the electrolytic device.
Reacts with ions to form an insoluble phosphorus compound and precipitates.
【０００８】残余の有機物を含んだ汚水は、カキ殻等を
充填した内槽の上向流に入り、溶存酸素が多く、好気性
微生物及び原生動物が多く付着生息している沈降性担体
の間を通過しながら残余の有機物が分解される。その過
程のなかで有機窒素化合物は亜硝酸、硝酸を経て窒素分
子となり、空中に飛散して系外に出る。上部に到って再
度外槽に還流し循環する。その間に当該汚水は次第に浄
化される。浄化された水は処理槽の上部より溢流して沈
殿槽に導入され、浮遊汚泥等が沈降し、上澄液は放流さ
れる。The sewage containing residual organic matter enters the upward flow of an inner tank filled with oyster shells and the like, and contains a large amount of dissolved oxygen and a large amount of aerobic microorganisms and protozoa. The remaining organic matter is decomposed while passing through. In the process, the organic nitrogen compound is converted into nitrogen molecules via nitrous acid and nitric acid, and is scattered in the air and goes out of the system. After reaching the upper part, it is returned to the outer tank and circulated again. Meanwhile, the wastewater is gradually purified. The purified water overflows from the upper part of the treatment tank and is introduced into the sedimentation tank, where suspended sludge and the like settle, and the supernatant liquid is discharged.
【０００９】処理槽の底部に沈降している汚泥は、処理
槽に接続されている沈殿槽からの返送汚泥用配管から小
口径の枝管を引き出し、これにポンプを連結し、処理槽
下部に別途配管した注入口よりポンプによって加圧噴射
して処理槽内部の沈殿汚泥を攪拌し、リン酸イオンとマ
グネシウムイオンの反応を促進させる。[0009] Sludge settling at the bottom of the treatment tank is drawn out of a small-diameter branch pipe from the return sludge pipe from the sedimentation tank connected to the treatment tank. The sludge inside the treatment tank is agitated by pressurized injection from a separately injected injection port by a pump to promote the reaction between phosphate ions and magnesium ions.
【００１０】[0010]
【発明の実施の形態】以下、本発明の実施の形態を図１
について説明する。１はリン含有有機性汚水の生物活性
汚水処理工程に置ける調整槽であり、下部が漏斗状に形
成されているものである。調整槽１の上部には工場廃水
を受ける原水配管２が開口しており、調整槽１は、この
原水配管２から導入された工場廃水をほぼ均一な成分に
調整する。調整槽１の底部近傍には揚水ポンプ３が設け
られており、その部分の水を吸入して、配管４を通じて
調整槽１に併設された処理槽５の原水流入口６に送水す
る。調整槽１の最下端はバルブ７を介して汚泥移送用の
配管８に接続されている。FIG. 1 is a block diagram showing an embodiment of the present invention.
Will be described. Reference numeral 1 denotes a regulating tank in a biologically active sewage treatment step for phosphorus-containing organic sewage, the lower part of which is formed in a funnel shape. A raw water pipe 2 for receiving factory wastewater is opened in an upper part of the adjustment tank 1, and the adjustment tank 1 adjusts the factory wastewater introduced from the raw water pipe 2 to a substantially uniform component. A pump 3 is provided in the vicinity of the bottom of the adjustment tank 1. The pump 3 sucks the water from the pump and sends the water to a raw water inlet 6 of a processing tank 5 attached to the adjustment tank 1 through a pipe 4. The lowermost end of the adjustment tank 1 is connected to a pipe 8 for transferring sludge via a valve 7.
【００１１】処理槽５も下部が漏斗状に形成されている
が、その上方の同一太さの部分（漏斗状でない部分）に
垂直方向の隔壁９が設けられて、その内側の内槽（ろ床
部）１０と外側の外槽（ろ床部）１１に区画している。
隔壁９の下部には保持体１２が取付けられ、その上に、
カキ殻等からなる沈降性担体１３が充填されている。The lower portion of the processing tank 5 is also formed in a funnel shape, but a vertical partition wall 9 is provided in a portion having the same thickness (a portion not having a funnel shape) above the processing tank 5, and an inner tank (filter) inside the processing tank 5 is provided. (Floor part) 10 and an outer tank (filter floor part) 11 on the outside.
A holding body 12 is attached to a lower portion of the partition wall 9, and on the holding body 12,
The sedimentable carrier 13 made of oyster shell or the like is filled.
【００１２】保持体１２は網または孔を有する板で形成
されており、その下部には散気装置１４が配設され、配
管１５からの酸素を含有したガスが内槽１０に供給され
るようになっている。外槽１１の内部には幕状多孔質担
体１６が垂直方向に設けられており、前述の原水流入口
６は、その上部に開口している。処理槽５の一部（図に
おける右側）には障壁１７が設けられ、処理槽５の内壁
と幕状多孔質担体１６とを区画している。そしてその区
画された部分の上端部に処理水流出口１８が設けられて
いる。The holding body 12 is formed of a plate having a net or a hole, and an air diffuser 14 is provided below the holding body 12 so that a gas containing oxygen from a pipe 15 is supplied to the inner tank 10. It has become. A curtain-shaped porous carrier 16 is provided in the outer tank 11 in a vertical direction, and the raw water inlet 6 is open at an upper portion thereof. A barrier 17 is provided on a part (right side in the figure) of the processing tank 5, and separates the inner wall of the processing tank 5 from the curtain-shaped porous carrier 16. A treated water outlet 18 is provided at the upper end of the section.
【００１３】処理槽５の底部に近いところにはマグネシ
ウムを放電極とした電解装置１９が設けられ、電線２０
により直流電源２１に接続されている。電解装置１９の
下部には余剰汚泥２２が溜るようになっている。処理槽
５の最下端はバルブ２３を介して配管８に接続されてい
る。処理槽５の最下端より少し上の部分には、加圧水を
処理槽５の壁面に向けて噴射できるように曲げた枝管２
４の一端が接続されている。この枝管２４の他端は配管
８に接続されているが、その中間部分には加圧注入ポン
プ２５とバルブ２６が接続されている。図示はしない
が、枝管２４の先端は、処理槽５の内壁に沿うように曲
げてある。An electrolyzer 19 using magnesium as a discharge electrode is provided near the bottom of the processing tank 5.
Is connected to the DC power supply 21. Excess sludge 22 accumulates in the lower part of the electrolyzer 19. The lowermost end of the processing tank 5 is connected to the pipe 8 via a valve 23. At a portion slightly above the lowermost end of the processing tank 5, a branch pipe 2 bent so that pressurized water can be sprayed toward the wall surface of the processing tank 5.
4 is connected to one end. The other end of the branch pipe 24 is connected to the pipe 8, and a pressurized injection pump 25 and a valve 26 are connected to an intermediate portion thereof. Although not shown, the distal end of the branch pipe 24 is bent along the inner wall of the processing tank 5.
【００１４】処理槽５の処理水出口１８には配管２７の
上端が接続されている。そしてこの配管２７の下端は、
処理槽５に近接して設けられた沈殿槽２８の中間より低
い部分に設けられた処理水受入口２９に接続されてい
る。沈殿槽２８も下部が漏斗状に形成されており、その
部分には沈降汚泥３０が溜るようになっている。そして
最下端はバルブ３１を介して配管８に接続されている。
沈殿槽２８の上部には放流口３２が設けられており、こ
こに接続された配管３３から、処理後の水を放流するよ
うになっている。An upper end of a pipe 27 is connected to a treated water outlet 18 of the treatment tank 5. And the lower end of this pipe 27
It is connected to a treated water receiving port 29 provided at a lower portion than the middle of a settling tank 28 provided close to the processing tank 5. The sedimentation tank 28 also has a funnel-shaped lower part, in which sedimentation sludge 30 accumulates. The lowermost end is connected to the pipe 8 via the valve 31.
A discharge port 32 is provided in the upper part of the sedimentation tank 28, and the treated water is discharged from a pipe 33 connected to the discharge port 32.
【００１５】バルブ７、バルブ２３およびバルブ３１を
介して調整槽１、処理槽５および沈殿槽２８の最下端に
接続された管路８には、余剰汚泥貯留槽３４が接続され
ている。An excess sludge storage tank 34 is connected to the pipeline 8 connected to the lowermost ends of the adjusting tank 1, the processing tank 5 and the settling tank 28 via the valves 7, 23 and 31.
【００１６】このように構成された装置は、有機性汚水
を浮遊微生物もしくは固定床担体あるいは半固定床担体
に付着された微生物により活性汚泥処理をするのに使用
する。The apparatus thus constructed is used to treat organic wastewater with activated sludge by floating microorganisms or microorganisms attached to a fixed bed carrier or semi-fixed bed carrier.
【００１７】上記装置を使用して行う水処理の作用を説
明する。食品工場等から排出されるリン含有有機性汚水
は、原水配管２から調整槽１内に導かれ、ここでほぼ均
一な成分に調整される。調整され成分が均一になった処
理水は、調整槽１の底部近傍に設けられた揚水ポンプ３
によって吸入され、配管４から処理槽５の原水流入口６
に流れ、処理槽５の外槽（ろ床部）１１に入る。The operation of the water treatment performed using the above apparatus will be described. Phosphorus-containing organic sewage discharged from a food factory or the like is guided from the raw water pipe 2 into the adjustment tank 1 where it is adjusted to a substantially uniform component. The treated water whose components have been adjusted to be uniform is supplied to a pump 3 provided near the bottom of the regulating tank 1.
From the pipe 4 to the raw water inlet 6 of the treatment tank 5
And enters the outer tank (filter bed) 11 of the processing tank 5.
【００１８】外槽１１に入った処理水は、処理槽５内に
垂下された幕状多孔質担体１６の間を通過しながら流下
して隔壁９の下端に至り散気装置１４からの曝気によっ
て上向き流の生じている内槽（ろ床部）１０に流入し、
矢印Ａで示すように反転して上昇し、内槽１０の上端に
到り、矢印Ｂで示すように再度外槽１１に還流して循環
を繰り返す。The treated water entering the outer tank 11 flows down while passing between the curtain-shaped porous carriers 16 suspended in the treating tank 5 to reach the lower end of the partition wall 9 and is aerated by the air diffuser 14. It flows into the inner tank (filter floor) 10 where the upward flow has occurred,
As shown by an arrow A, it reverses and rises, reaches the upper end of the inner tank 10, returns to the outer tank 11 again as shown by an arrow B, and repeats circulation.
【００１９】リン含有有機性汚水は、まず、外槽１１に
流入するが、この外槽１１は曝気されないため、上層部
より処理槽５の底部に至るほど、溶存酸素の量は減少し
て嫌気状態を呈している。そのため、垂下した幕状多孔
質担体１６に生息する微生物群も上層部では担体表面に
は好気性微生物が増殖し、担体内部には嫌気性微生物が
増殖しているが、下層になるほど溶存酸素が欠乏するた
め、担体表面の好気性微生物群の生存割合が減少し、代
わって嫌気性微生物群の生存割合が増加してくる。よっ
て外槽３を通過する汚水は、始め好気性微生物によって
消化され、次に嫌気性微生物により消化分解除去され
る。The organic sewage containing phosphorus first flows into the outer tank 11, but since the outer tank 11 is not aerated, the amount of dissolved oxygen decreases from the upper layer to the bottom of the treatment tank 5 so that it becomes anaerobic. State. Therefore, in the upper layer, aerobic microorganisms grow on the surface of the carrier and anaerobic microorganisms grow inside the carrier in the upper layer, but dissolved oxygen grows lower in the lower layer. Due to the deficiency, the survival rate of the aerobic microorganism group on the carrier surface decreases, and the survival rate of the anaerobic microorganism group increases instead. Therefore, the sewage passing through the outer tank 3 is first digested by aerobic microorganisms, and then digested, decomposed and removed by anaerobic microorganisms.
【００２０】その状態で槽内下部に到り、汚水中のＳＳ
（懸濁物質）と剥離脱落した微生物等は沈殿して汚水中
から分離され、処理槽５の底部に溜って嫌気性微生物に
より分解される。外槽１１を通過した、残余の有機物を
含んだ当該汚水は内槽１０に流入し、散気装置１４から
の曝気により溶存酸素の豊富な条件が保たれ、好気性微
生物および原生動物等により効率よく消化分解される。
このとき、有機物中の窒素も分解され、窒素ガスとして
系外に揮散する。かくして、リン含有有機性汚水は効率
良く分解される。In this state, the water reaches the lower part of the tank, and
The (suspended matter) and the microorganisms that have separated and fallen off settle out and are separated from the sewage, collect at the bottom of the treatment tank 5, and are decomposed by the anaerobic microorganisms. The sewage containing residual organic matter that has passed through the outer tank 11 flows into the inner tank 10, and the aeration from the air diffuser 14 keeps the dissolved oxygen-rich condition, and is more efficient by aerobic microorganisms and protozoa. Well digested and decomposed.
At this time, nitrogen in the organic matter is also decomposed and volatilizes out of the system as nitrogen gas. Thus, the phosphorus-containing organic wastewater is efficiently decomposed.
【００２１】浄化された水は、隔壁１７に沿って上昇
し、上端部の処理水出口１８から溢流して沈殿槽２８に
送られ、混入しているＳＳ等の浮遊物を沈降分離後、放
流口３２から放流される。沈降した沈降汚泥３０は配管
８を通じて余剰汚泥貯留槽３４に送られ、一部は処理槽
５に返送され、沈降汚泥２２の攪拌および活性汚泥（微
生物）源として使用される。The purified water rises along the partition wall 17, overflows from the treated water outlet 18 at the upper end, is sent to the sedimentation tank 28, and sedimentation and separation of suspended matters such as SS are discharged. It is discharged from the mouth 32. The settled sludge 30 is sent to the surplus sludge storage tank 34 through the pipe 8, and a part of the settled sludge is returned to the treatment tank 5, where the settled sludge 22 is stirred and used as an activated sludge (microorganism) source.
【００２２】生物処理された汚水中には有機物の分解で
できたリン酸がイオンの状態で存在している。従来は嫌
気性処理槽にマグネシウム化合物、鉄化合物等を注入し
てリンを補足し沈降処理していたが、本発明において
は、処理槽５の下部に電解装置１９を設けて金属マグネ
シウムを陽極とし、陰極にはマグネシウムより貴なる金
属、たとえば鉄、銅などを用いる。この電解装置１９に
直流電源２１から直流電流を流すと、マグネシウムは電
解され水中に溶け出す。そして水中に存在するリンと反
応して不溶性のリン酸化合物となって沈降し、余剰汚泥
とともに系外に排出される。Phosphoric acid formed by the decomposition of organic matter is present in the biologically treated sewage in the form of ions. Conventionally, a magnesium compound, an iron compound, or the like is injected into an anaerobic treatment tank to capture phosphorus and perform a sedimentation treatment. However, in the present invention, an electrolytic device 19 is provided below the treatment tank 5 to use metal magnesium as an anode. For the cathode, a metal noble than magnesium, such as iron or copper, is used. When a DC current is supplied from the DC power supply 21 to the electrolytic device 19, magnesium is electrolyzed and melts in water. Then, it reacts with the phosphorus present in the water to form an insoluble phosphate compound, precipitates, and is discharged out of the system together with excess sludge.
【００２３】この余剰汚泥は凝集剤として、鉄、亜鉛、
アルミニウム等、植物に有害な金属を使用していないた
め、乾燥して苦土（マグネシウム）リン含有の有機質肥
料として有効に活用することができる。The excess sludge is used as a coagulant such as iron, zinc,
Since no harmful metals such as aluminum are used for plants, it can be dried and effectively used as an organic fertilizer containing magnesium (magnesium) phosphorus.
【００２４】処理槽５の底部に溜った沈降汚泥２２は、
嫌気性微生物によって分解されるが、底部より少し上部
に接続された枝管２４を通じて加圧注入ポンプ２５によ
り、沈殿槽２８の沈降汚泥３０を含有した汚水を間欠的
に加圧噴射し、攪拌してリンを拡散させ、マグネシウム
と反応させることで、より効果的に水中のリンを除去す
ることができる。この方法は、沈降汚泥３０を再処理す
るとともに、排出汚泥の減量も兼ねている。The settled sludge 22 accumulated at the bottom of the treatment tank 5 is
Although decomposed by anaerobic microorganisms, the wastewater containing the settled sludge 30 in the settling tank 28 is intermittently pressurized and injected by the pressure injection pump 25 through the branch pipe 24 connected slightly above the bottom and stirred. By diffusing phosphorus and reacting with magnesium, phosphorus in water can be more effectively removed. This method reprocesses the settled sludge 30 and also reduces the amount of discharged sludge.
【００２５】図１に符号７，２３，２６および３１で示
すバルブは、必要に応じて自動的に、あるいは手動操作
によって適宜開閉する。The valves indicated by reference numerals 7, 23, 26 and 31 in FIG. 1 are opened and closed automatically as needed or by manual operation.
【００２６】[0026]
【実施例】以下、図１の装置を用いて行った本発明の実
施例を説明するが、本発明はこれに限定されるものでは
ない。使用した汚水は缶詰工場の魚類関係廃水であり、
その水質は、表１の調整槽原水を用いた。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention performed using the apparatus shown in FIG. 1 will be described below, but the present invention is not limited to this. The wastewater used was fish-related wastewater from a canning factory,
The quality of the water used was the water from the regulating tank shown in Table 1.
【００２７】[0027]
【表１】 [Table 1]
【００２８】沈降性担体にはカキ殻を、幕状多孔質担体
にはフエルトを使用した。また電解装置１９の電極には
陽極にマグネシウム板、陰極に銅板を用いた。内容積１
０リットルの処理槽５に、１５日間、微生物を培養し、
十分に担体に付着させた時点で槽内の水を抜き取り、資
料原水を注入した。処理水の滞留時間を８時間、水温２
１〜２５℃で実施したところ、表１のの結果を得た。Oyster shell was used as the sedimentable carrier, and felt was used as the curtain-shaped porous carrier. In addition, a magnesium plate was used as an anode and a copper plate was used as a cathode for the electrodes of the electrolysis apparatus 19. Inner volume 1
Microorganisms are cultivated for 15 days in 0 liter processing tank 5,
At the time when it was sufficiently attached to the carrier, the water in the tank was drained, and the raw material water was injected. Retention time of treated water is 8 hours, water temperature 2
When carried out at 1 to 25 ° C., the results shown in Table 1 were obtained.
【００２９】[0029]
【比較例】比較例として実施例と同じ内容積１０リット
ルの処理槽５に、通常行われている沈降性担体を充填し
たろ床を設置し、気温２０〜２５℃、滞留時間８時間、
活性汚泥をＭＬＳＳとして３０００ｐｐｍ，ＳＶ30１
０．５％で７日間培養してから資料原水を２１ｍｌ／ｍ
ｉｎのレートで連続注入して処理したところ、１６時間
後（資料原水２回分に相当）に採水して水質分析を行っ
た結果、表１のの結果を得た。COMPARATIVE EXAMPLE As a comparative example, a filter bed filled with a sedimentable carrier, which is generally used, was installed in a treatment tank 5 having an internal volume of 10 liters as in the example.
3000ppm the activated sludge as MLSS, SV 30 1
After culturing at 0.5% for 7 days, the raw material water is 21 ml / m
Injection was performed continuously at an in rate, and after 16 hours (corresponding to two times of raw material water), water was sampled and the water quality was analyzed.
【００３０】表１には、実施例と比較例が示されている
が、実施例は比較例と比べ、ＢＯＤが６０７ｍｇ／Ｌと
有機物の分解がよく、総窒素量（Ｔ−Ｎ）も２．３ｍｇ
／Ｌ、リンの処理能力も総リン量（Ｔ−Ｐ）が０．１ｍ
ｇ／Ｌと９９％の除去率であった。Table 1 shows Examples and Comparative Examples. In Examples, the BOD was 607 mg / L, the decomposition of organic substances was good, and the total nitrogen amount (TN) was 2 in comparison with Comparative Examples. 0.3mg
/ L, phosphorus processing capacity is 0.1m in total phosphorus (TP)
g / L and a removal rate of 99%.
【００３１】[0031]
【発明の効果】本発明は、以上説明したように構成され
たリン含有有機性汚水処理装置であるから、従来のリン
含有有機性汚水の生物処理方法に、沈降性担体と幕状多
孔質担体を併用することになるので、これらを使用しな
い従来のものに比べてＢＯＤが著しく減少する。The present invention is an apparatus for treating phosphorus-containing organic sewage constructed as described above. Therefore, the conventional method for biological treatment of phosphorus-containing organic sewage can be applied to a sedimentable carrier and a curtain-shaped porous carrier. Is used in combination, so that the BOD is significantly reduced as compared with the conventional one not using these.
【００３２】また、上記装置において前記処理槽の底部
と散気装置の中間部に金属マグネシウム電極を使用した
電解装置を設置したことにより、金属マグネシウムをイ
オン化することで、吸着剤を注入する装置が不要にな
り、労力の省力化が可能となる。Further, in the above apparatus, an electrolysis apparatus using a metal magnesium electrode is installed between the bottom of the processing tank and an intermediate part of the air diffuser, so that an apparatus for injecting an adsorbent by ionizing metal magnesium is provided. This is unnecessary, and labor can be saved.
【００３３】また、処理槽の沈殿汚泥の攪拌に、先端を
処理槽の内壁に沿うように曲げた小口径の枝管を設けた
ことにより、この枝管により沈殿槽の沈降汚泥水を利用
することができるので、特別に攪拌装置を設置すること
なく、沈降汚泥を攪拌することが可能となった。In addition, a small-diameter branch pipe whose tip is bent along the inner wall of the processing tank is provided for stirring the settling sludge in the processing tank. Therefore, it is possible to stir the settled sludge without installing a special stirrer.
【００３４】さらに、廃棄汚泥にはアルミニウムや鉄な
どの植物に対する有害物質が含まれていないので、乾燥
させて有機肥料として利用することができる。Further, since waste sludge does not contain harmful substances to plants such as aluminum and iron, it can be dried and used as an organic fertilizer.
【図１】本発明の実施の形態を示す系統図である。FIG. 1 is a system diagram showing an embodiment of the present invention.
１ 調整槽 ２ 原水配管 ３ 揚水ポンプ ５ 処理槽 ６ 原水流入口 ９ 隔壁 １０ 内槽 １１ 外槽 １２ 保持体 １３ 沈降性担体 １４ 散気装置 １６ 幕状多孔質担体 １７ 障壁 １８ 処理水流出口 １９ 電解装置 ２４ 枝管 ２５ 加圧注入ポンプ ２８ 沈殿槽 ２９ 処理水受入口 ３２ 放流口 ３４ 余剰汚泥貯留槽 DESCRIPTION OF SYMBOLS 1 Adjustment tank 2 Raw water piping 3 Pump 5 Pumping tank 6 Raw water inlet 9 Partition wall 10 Inner tank 11 Outer tank 12 Holder 13 Sedimentable carrier 14 Air diffuser 16 Curtain-shaped porous carrier 17 Barrier 18 Treatment water outlet 19 Electrolyzer 24 Branch pipe 25 Pressure injection pump 28 Settling tank 29 Treated water receiving port 32 Discharge port 34 Excess sludge storage tank
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ０２Ｆ 3/34 １０１ (56)参考文献 特開 昭59−142897（ＪＰ，Ａ) 特開 昭57−12892（ＪＰ，Ａ) 特開 昭54−132359（ＪＰ，Ａ) 特開 昭53−146466（ＪＰ，Ａ) 実開 昭55−111597（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) C02F 3/02 - 3/10 C02F 3/30 C02F 3/34 101 C02F 1/46 ──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 7 Identification code FI C02F 3/34 101 (56) References JP-A-59-142897 (JP, A) JP-A-57-12892 (JP, A) JP-A-54-132359 (JP, A) JP-A-53-146466 (JP, A) Japanese utility model application Sho 55-111597 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) C02F 3/02-3/10 C02F 3/30 C02F 3/34 101 C02F 1/46
Claims (2)
な成分に調整する調整槽と、該調整槽で調整された後の
有機性汚水を浮遊微生物もしくは固定床担体あるいは半
固定床担体に付着した微生物により活性汚泥処理をする
処理槽と、該処理槽で処理された水から混入している浮
遊物を沈降分離する沈殿槽からなるリン含有有機性汚水
処理装置において、前記処理槽の槽内水面下にカキ殻等
の沈降性担体を充填したろ床部と幕状多孔質担体を垂下
したろ床部とを、隔壁により区画し、幕状多孔質担体を
垂下したろ床部に原水流入口および処理水流出口を設け
ると共に、前記カキ殻等の沈降性担体のろ床部の下方部
に酸素含有ガスの散気装置を配備したことを特徴とする
リン含有有機性汚水処理装置。1. An adjusting tank for storing phosphorus-containing organic sewage and adjusting it to a substantially uniform component, and converting the organic sewage adjusted in the adjusting tank to suspended microorganisms, a fixed-bed carrier, or a semi-fixed-bed carrier. In a phosphorus-containing organic wastewater treatment apparatus comprising a treatment tank for performing activated sludge treatment by adhered microorganisms and a sedimentation tank for sedimenting and separating suspended matter mixed in water treated in the treatment tank, the treatment tank A filter bed filled with sedimentary carriers such as oyster shells below the inland water surface and a filter bed with the curtain-shaped porous carrier hanging down are partitioned by partition walls, and the filter bed with the curtain-shaped porous carrier hanging down is placed on the filter bed. A phosphorus-containing organic sewage treatment apparatus comprising a water inlet and a treated water outlet, and an oxygen-containing gas diffuser disposed below a filter bed of the sedimentable carrier such as the oyster shell.
金属マグネシウム電極を使用した電解装置を設置すると
共に、処理槽下部に設けた返送汚泥用配管から小口径の
枝管を処理槽下端の少し上部に接続し、その先端を処理
槽の内壁に沿うように曲げたことを特徴とする請求項１
に記載のリン含有有機性汚水処理装置。2. An electrolyzer using a metal magnesium electrode is installed at the bottom of the treatment tank and an intermediate part of the diffuser, and a small-diameter branch pipe is returned from a return sludge pipe provided at a lower part of the treatment tank. 2. A method according to claim 1, wherein the lower end is connected to a slightly upper part, and the end is bent along the inner wall of the processing tank.
2. The phosphorus-containing organic wastewater treatment apparatus according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11186997A JP3268385B2 (en) | 1997-04-14 | 1997-04-14 | Phosphorus-containing organic wastewater treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11186997A JP3268385B2 (en) | 1997-04-14 | 1997-04-14 | Phosphorus-containing organic wastewater treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10286583A JPH10286583A (en) | 1998-10-27 |
| JP3268385B2 true JP3268385B2 (en) | 2002-03-25 |
Family
ID=14572208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11186997A Expired - Fee Related JP3268385B2 (en) | 1997-04-14 | 1997-04-14 | Phosphorus-containing organic wastewater treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3268385B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8314340B2 (en) | 2008-09-30 | 2012-11-20 | Ibiden Co., Ltd. | Multilayer printed wiring board and method for manufacturing multilayer printed wiring board |
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|---|---|---|---|---|
| US6764600B2 (en) * | 2002-07-18 | 2004-07-20 | Environmental Vision 21, Ltd. | Lagoon for hog waste and the method of treatment thereof |
| CN101844858B (en) * | 2010-06-17 | 2011-11-09 | 北京交通大学 | Aerobic-anoxic-anaerobic integrated module type sewage fast denitrogenation reactor and treatment method thereof |
| CN103601335B (en) * | 2013-10-15 | 2015-01-21 | 常州思宇环保材料科技有限公司 | Device for removing nitrate from restaurant wastewater |
| JP6327718B2 (en) * | 2016-01-07 | 2018-05-23 | 国立研究開発法人農業・食品産業技術総合研究機構 | Microbial electrolysis cell |
| CN108715487B (en) * | 2018-06-11 | 2020-12-08 | 上海海洋大学 | Filter equipment of coupling air supporting function |
| CN109626561B (en) * | 2019-02-02 | 2023-05-09 | 重庆大学 | Integrated pre-hatching-aerobic granular sludge treatment device and method thereof |
-
1997
- 1997-04-14 JP JP11186997A patent/JP3268385B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8314340B2 (en) | 2008-09-30 | 2012-11-20 | Ibiden Co., Ltd. | Multilayer printed wiring board and method for manufacturing multilayer printed wiring board |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10286583A (en) | 1998-10-27 |
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