JP3137332B2 - Sewage treatment equipment - Google Patents
Sewage treatment equipmentInfo
- Publication number
- JP3137332B2 JP3137332B2 JP15907790A JP15907790A JP3137332B2 JP 3137332 B2 JP3137332 B2 JP 3137332B2 JP 15907790 A JP15907790 A JP 15907790A JP 15907790 A JP15907790 A JP 15907790A JP 3137332 B2 JP3137332 B2 JP 3137332B2
- Authority
- JP
- Japan
- Prior art keywords
- water tank
- sewage
- treated water
- treatment
- treated
- 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
-
- 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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Activated Sludge Processes (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
本発明は、畜舎や食品工場等から排出される汚水をバ
ッチ式で処理する汚水処理装置に関する。The present invention relates to a sewage treatment apparatus for treating sewage discharged from a barn, a food factory, or the like in a batch manner.
従来、比較的小量の高濃度有機性廃水や間欠的に排出
される汚水は、連続的に処理可能な大型の汚水処理装置
で処理すると処理コストが高くなるため、比較的小型の
バッチ式の汚水処理装置で処理されることが多い。 従来のバッチ式の汚水処理装置は、処理水槽を複数有
していて、一方の処理水槽で曝気処理している間に他方
を沈殿槽として用い、各処理水槽の処理機能を交互に変
換するようにしている。Conventionally, relatively small amounts of high-concentration organic wastewater and wastewater discharged intermittently are treated with a large-scale wastewater treatment equipment that can be treated continuously, which increases the treatment cost. It is often treated in sewage treatment equipment. A conventional batch-type sewage treatment apparatus has a plurality of treatment water tanks, and while performing aeration treatment in one treatment water tank, uses the other as a sedimentation tank, and alternately converts the treatment function of each treatment water tank. I have to.
しかしながら、上記従来のバッチ式の汚水処理装置
は、複数の処理水槽の処理機能を交互に行なうようにし
ているため、連続式に比べ小型ではあるが、複数の処理
水槽を必要とし、また、各処理水槽に曝気器等の機器を
備えなければならず、処理コストを大巾に低減させるこ
とができなかった。 そこで、本発明は、上記の問題点を解決するためにな
されたものであって、単一の処理水槽に曝気器及び混合
撹拌機の機能を有することのできる水流発生器を設け
て、低コストでバッチ式で処理することのできる汚水処
理装置を提供することを目的としている。However, the above-mentioned conventional batch type sewage treatment apparatus is configured to alternately perform the treatment functions of a plurality of treatment water tanks, but is smaller than a continuous type, but requires a plurality of treatment water tanks, and Equipment such as an aerator must be provided in the treated water tank, and the treatment cost cannot be reduced significantly. In view of the above, the present invention has been made to solve the above-described problems, and a single treatment water tank is provided with a water flow generator capable of having the functions of an aerator and a mixing stirrer. It is an object of the present invention to provide a sewage treatment apparatus that can be treated in a batch system.
本発明に係る汚水処理装置は、上記の目的を達成する
ために、畜舎あるいは食品工場等から排出される汚水を
処理水槽に受け入れて生物学的に処理したのち、該処理
水槽内で沈殿処理し、上澄水を処理水として得るバッチ
式の汚水処理装置であって、前記処理水槽内に、下部の
内壁に邪魔板を有するコーン部材の設けられている筒状
のケーシングを垂直状に設けるとともに、そのケーシン
グの上下にモータによって回転駆動される、上部の羽根
数が下部の羽根数より多い一対の羽根車を有する水流発
生器を設けたことを特徴としている。 さらに、前記水流発生器は、生物学的処理時に酸素ま
たは酸素含有ガスを汚水に溶解させる曝気手段として機
能し、沈殿処理時に化学品を汚水に混合させる混合撹拌
手段の機能を有することを特徴としている。 そして、前記処理水槽の内壁には、処理水層底部から
上方に伸びる導水路が垂直状に設けられていることを特
徴としている。The sewage treatment apparatus according to the present invention, in order to achieve the above-mentioned object, biologically treats sewage discharged from a livestock barn or a food factory by receiving the sewage in a treated water tank, and then performs sedimentation treatment in the treated water tank. A batch-type sewage treatment apparatus for obtaining supernatant water as treated water, wherein a vertical cylindrical casing provided with a cone member having a baffle plate on a lower inner wall is provided in the treated water tank, A water flow generator having a pair of impellers, the number of upper blades being larger than the number of lower blades, which is rotationally driven by a motor, is provided above and below the casing. Furthermore, the water flow generator functions as aeration means for dissolving oxygen or an oxygen-containing gas in sewage during biological treatment, and has a function of mixing and stirring means for mixing chemicals into sewage during precipitation. I have. Further, a water conduit extending upward from the bottom of the treated water layer is provided vertically on the inner wall of the treated water tank.
上記構成において、一対の羽根車がモータにより回転
駆動されると、ケーシング内に水流が発生し、この水流
によって処理水槽内の汚水が流動化撹拌される。 上部の羽根車の羽根数が下部の羽根数よりも多いの
で、これら羽根車の回転によりケーシング内の水圧は高
まり、したがって、汚水はケーシング下部から邪魔板付
のコーン部材の内壁に向けて激しく噴出される。そし
て、その汚水中に酸素または酸素含有ガスが含まれてい
るときは、その酸素を汚水中に効果的に溶解させるとと
もに、汚水中の固形物はそのコーン部材に衝突して微細
化され、より生物処理を受けやすいように変化される。
また、汚水中に化学品が添加されたときは、その化学品
を汚水中に効果的に混合させる。 そして、導水路は、処理水槽底部の汚水を上方へ導
き、処理水槽内の汚水循環を助長させる。In the above configuration, when the pair of impellers is driven to rotate by the motor, a water flow is generated in the casing, and the water flow fluidizes and agitates the wastewater in the treated water tank. Since the number of blades in the upper impeller is larger than the number of blades in the lower portion, the rotation of these impellers increases the water pressure in the casing. You. When oxygen or an oxygen-containing gas is contained in the sewage, the oxygen is effectively dissolved in the sewage, and the solids in the sewage collide with the cone member and are miniaturized. It is changed to be susceptible to biological treatment.
When a chemical is added to the sewage, the chemical is effectively mixed into the sewage. Then, the water guide channel guides the sewage at the bottom of the treated water tank upward, and promotes the sewage circulation in the treated water tank.
以下、本発明の一実施例装置を図面に基づいて説明す
る。 第１図は実施例装置の縦断面図及び第２図は第１図の
II−II線断面図である。 処理水槽１は、下部が逆円錐形をしたFRP製の円筒状
容器で、半地下式に設けられている。なお、図示しない
が、処理水槽１はその外周に補強のためのバンド部材及
び処理水槽１を垂直に設立するためのスタンド部材が設
けられている。 導水路２は、処理水槽１の内壁1aに垂直状に設けら
れ、その上部は処理水槽１に汚水が所定量供給されたと
きの水位L1よりも下方に位置し、その下部は処理水槽１
の底部に位置している。この導水路２は、断面コ字状ま
たは半円状の鋼材あるいは合成樹脂製からなり、内壁1a
の円周を等間隔に区分するように複数本（図示の例は４
本）設けられる。 水流発生器３は、処理水槽１の内部の上部で、かつ処
理水槽１内に所定の汚水が供給されたときの水位L1より
も下方に設けられ、垂直状に設けられた筒状のケーシン
グ４と、このケーシング４の上下に設けられた一対の羽
根車5a,5bと、これら羽根車5a,5bを回転駆動されるモー
タＭとから構成されている。 なお、ケーシング４は、処理水槽１の上部に設けられ
ているフランジ1bに図示しない支持部材で保持されてい
る。また、モータＭもこのフランジ1bに取付けられてい
て、その駆動軸６がケーシング４の軸心上に位置してい
る。 各羽根車5a,5bの傾きは、駆動軸６が所定方向に回転
したとき、下向きの水流が発生するように設定されてお
り、また、上部の羽根車5aの羽根数が下部の羽根車5bよ
り多く設定されている。したがって、羽根車5a,5bが例
えば3000rpmというような高速で回転されると、ケーシ
ング４の内部は高圧となり、下部の羽根車5bから汚水が
高速で噴出されることとなる。 両羽根車5a,5b間の駆動軸６には、複数本のカッター6
a,6a…が設けられている。したがって、駆動軸６が高速
で回転されると、高圧に維持されているケーシング４内
で固形物が切断されて微細化され、後述のコーン部材の
作用と相俟って生物処理効果を一段と高めることができ
る。 ケーシング４の下部には、内壁に邪魔板７を有するコ
ーン部材８が取付けられている。したがって、羽根車5b
から高速で噴出されてくる汚水はこのコーン部材８に衝
突し、その汚水に酸素または酸素含有ガスが含まれてい
るときは、そのガスを微細化して汚水への溶解を促進さ
せることができるとともに、その汚水中の固形物を微細
化して生物処理を受けやすくすることができる。 図中、９は酸素または酸素含有ガスを供給するガス供
給管であって、一端が上部の羽根車5aの上方に位置し、
他端は図示しないガス発生器に連結されている。なお、
供給されるガスはオゾンから生成される酸素や、その他
の酸素富化ガスが好ましいが、空気であってもよい。 図中、10は凝集剤，凝集助剤等の化学品を供給する薬
品供給管であって、一端は上記ガス供給管９と同様に、
羽根車5aの上方に位置し、他端は図示しない薬液タンク
へ連結されている。なお、添加される化学品としては、
周知の凝集材等でもよいが、本出願人が別途提案した各
種無機塩等を含んだ化学処理剤（商標「ミラクル」）が
好適である。このミラクルは、含有するマルチミネラル
イオンの遷移金属イオンによる触媒作用により、遊離の
活性酸素が生成し、マルチミネラルイオンの触媒作用に
より、水溶不可視物質を水中又は物質中に溶存する酸素
を活性化し、有機性物質を酸化反応促進させて分解し、
凝集させ、さらにマルチ酸素による、加水分解作用の相
互効果により、汚水処理を行うことができる。 図中、11は原水槽で、処理水槽１と同様に半地下式に
設置され、畜舎からの汚水あるいは食品工場等からの汚
水を一時貯留する容積を有している。 次に、本実施例装置の処理動作について説明する。 先ず、処理水槽１の下方に設けられているバルブＶが
閉められる。したがって、処理水槽１にはバッチ処理の
２回目以降は、このバルブＶの設けられている処理水取
出管12の取付位置によって規定される水位L2の処理水
（汚水）が貯留されている。 そして、原水槽11からの汚水がスクリーン13で除塵さ
れたのち、原水供給管14からポンプ（図示せず）を介し
て処理水槽１へ供給される。この処理水槽１へ供給され
る汚水の水位は、処理水槽１の上方で、かつ少なくとも
上部の羽根車5aよりも上方に開口しているオーバーフロ
ー管15によって規制される水位L1である。 所定量の汚水が処理水槽１へ供給されたら、ガス供給
管９から酸素含有ガスを供給し、モータＭを回転駆動さ
せて生物学的処理（以下、生物処理という）が所定時間
行なわれる。 この際、上述したように、各羽根車5a,5bは高速回転
させられるため酸素の溶解効率が高く、また汚水中の固
形物も微細化されるために生物処理が効果的に行なわれ
るとともに、導水路２を介して図示の矢印方向の槽内流
動が起り、均一な処理が行なわれる。なお、この生物処
理時に発泡が生じるが、この泡はオーバーフロー管15を
介して原水槽11へ排出される。この泡には多少のSS成分
も付着して排出される。 所定時間生物処理を行なったのち、ガス供給管９から
のガスの供給を止めるとともに、薬剤供給管10から所定
量の薬品が添加される。この薬品添加時には、まだモー
タＭが回転駆動しているので、添加された薬品は生物処
理された汚水と均一に混合される。 この薬品混合が終了したら、モータＭの回転を止め、
所定時間、沈殿処理を行なう。沈殿処理後、処理水槽１
の底部に設けられている排泥管16から濃縮した汚泥を所
定量排出する。なお、排出した汚泥は上記スクリーン13
のし渣とともに天日乾燥等の周知の脱水処理が施され
る。 排泥処理後、バルブＶが開かれ、上澄水が処理水とし
て処理水排出管12から排出される。 本発明者の実験によれば、BOD3000ppmの汚水を20時間
生物処理したのち、本出願人の提案した「ミラクル」を
添加し、３時間沈殿処理したときの処理水BODは50ppmと
なり、十分な処理水水質を得ることができた。 本実施例に係る汚水処理装置は、処理水槽１にケーシ
ング４の上下に羽根車5a,5bを有する水流発生器３を設
け、この水流発生器を生物処理時には曝気器として、ま
た薬品添加時には混合撹拌機として機能させるようにし
たので、単一の処理水槽で完全なバッチ処理を行なうこ
とができ、したがって設備費が安く、処理コストを低下
させることができる。 また、上部の羽根車の羽根数が下部よりも多いので、
ケーシング４内の水圧は高まり、下部の羽根車5bから邪
魔板７の付いたコーン部材８へ汚水を激しく衝突させる
ことができるので、酸素ガスや固形物を微細化でき生物
処理を効率よく行なわせることができる。 さらに、導水路２を設けたので、処理水槽１内の流動
を助長させて均一化でき、処理効率をより高めることが
できる。Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of the embodiment device, and FIG.
FIG. 2 is a sectional view taken along line II-II. The treated water tank 1 is a cylindrical container made of FRP with a lower part having an inverted conical shape, and is provided in a semi-underground type. Although not shown, the treated water tank 1 is provided with a band member for reinforcement and a stand member for vertically establishing the treated water tank 1 on the outer periphery thereof. Headrace 2 is provided in a vertical shape to the inner wall 1a of the treatment water tank 1, the upper is located below the water level L 1 when the sewage treatment water tank 1 is a predetermined amount supplied, the lower the treatment water tank 1
Located at the bottom of the. The water conduit 2 is made of steel or synthetic resin having a U-shaped or semicircular cross section, and has an inner wall 1a.
(E.g., 4
Book) is provided. Water generator 3, inside the upper part of the treatment water tank 1, and the process provided below the water level L 1 when a predetermined sewage is supplied to the water tank 1, cylindrical casing which is provided in a vertical shape 4, a pair of impellers 5a, 5b provided above and below the casing 4, and a motor M for rotating the impellers 5a, 5b. Note that the casing 4 is held by a support member (not shown) on a flange 1b provided above the treated water tank 1. The motor M is also mounted on the flange 1b, and its drive shaft 6 is located on the axis of the casing 4. The inclination of each impeller 5a, 5b is set so that a downward water flow is generated when the drive shaft 6 rotates in a predetermined direction, and the number of blades of the upper impeller 5a is lower than that of the lower impeller 5b. More are set. Therefore, when the impellers 5a and 5b are rotated at a high speed of, for example, 3000 rpm, the pressure inside the casing 4 becomes high, and sewage is spouted from the lower impeller 5b at a high speed. A plurality of cutters 6 are mounted on the drive shaft 6 between the impellers 5a and 5b.
a, 6a ... are provided. Therefore, when the drive shaft 6 is rotated at a high speed, solids are cut and miniaturized in the casing 4 maintained at a high pressure, and the biological treatment effect is further enhanced in combination with the operation of the cone member described later. be able to. A cone member 8 having a baffle plate 7 on the inner wall is attached to a lower portion of the casing 4. Therefore, the impeller 5b
The sewage spouted at high speed collides with the cone member 8, and when the sewage contains oxygen or an oxygen-containing gas, the gas can be refined to promote dissolution in the sewage. The solids in the sewage can be made finer to facilitate biological treatment. In the figure, 9 is a gas supply pipe for supplying oxygen or an oxygen-containing gas, one end of which is located above the upper impeller 5a,
The other end is connected to a gas generator (not shown). In addition,
The gas supplied is preferably oxygen generated from ozone or other oxygen-enriched gas, but may be air. In the figure, reference numeral 10 denotes a chemical supply pipe for supplying chemicals such as a flocculant, a flocculant, and the like.
It is located above the impeller 5a, and the other end is connected to a chemical solution tank (not shown). In addition, as chemicals to be added,
A well-known coagulant may be used, but a chemical treating agent (trademark “Miracle”) containing various inorganic salts and the like separately proposed by the present applicant is preferable. In this miracle, free active oxygen is generated by the catalysis of the transition metal ion of the contained multimineral ion, and the catalysis of the multimineral ion activates the oxygen dissolved in the water or invisible substance in water or in the substance, Decompose organic substances by accelerating the oxidation reaction,
The sewage treatment can be performed by coagulation and further by the mutual effect of hydrolysis action by multi-oxygen. In the figure, reference numeral 11 denotes a raw water tank, which is installed in a semi-underground manner like the treated water tank 1 and has a capacity for temporarily storing sewage from livestock pens or food factories. Next, a processing operation of the apparatus of this embodiment will be described. First, the valve V provided below the treatment water tank 1 is closed. Thus, the second and subsequent batching the treatment water tank 1, treated water in the water level L 2 defined by the mounting position of the treated water take-out pipe 12 which is provided with the valve V (sewage) is stored. After the sewage from the raw water tank 11 is dust-removed by the screen 13, the waste water is supplied from the raw water supply pipe 14 to the treated water tank 1 via a pump (not shown). The water level of the sewage supplied to the process water tank 1, above the treating tank 1, and a water level L 1, which is regulated by an overflow tube 15 which is open upward from at least the upper impeller 5a. When a predetermined amount of sewage is supplied to the treated water tank 1, an oxygen-containing gas is supplied from the gas supply pipe 9, and the motor M is rotated to perform biological treatment (hereinafter referred to as biological treatment) for a predetermined time. At this time, as described above, each of the impellers 5a and 5b is rotated at a high speed, so that the dissolution efficiency of oxygen is high, and the solid matter in the wastewater is also finely divided, so that biological treatment is effectively performed. The flow in the tank in the direction of the arrow shown in the figure occurs via the water conduit 2, and uniform processing is performed. In addition, foaming occurs during the biological treatment, and the foam is discharged to the raw water tank 11 through the overflow pipe 15. Some SS components adhere to this foam and are discharged. After performing the biological treatment for a predetermined time, the supply of gas from the gas supply pipe 9 is stopped, and a predetermined amount of chemical is added from the chemical supply pipe 10. At the time of this chemical addition, since the motor M is still rotating, the added chemical is uniformly mixed with the biologically treated sewage. When the chemical mixing is completed, the rotation of the motor M is stopped,
Precipitation is performed for a predetermined time. After settling, treated water tank 1
A predetermined amount of concentrated sludge is discharged from a sludge pipe 16 provided at the bottom of the tank. The discharged sludge is screen 13
A well-known dehydration treatment such as sun drying is performed together with the residue. After the sludge treatment, the valve V is opened, and the supernatant water is discharged from the treated water discharge pipe 12 as treated water. According to the experiment of the present inventor, after biological treatment of 3,000 ppm of BOD wastewater for 20 hours, "Miracle" proposed by the present applicant was added, and the treated water BOD when settling treatment was performed for 3 hours was 50 ppm. Water quality was obtained. In the sewage treatment apparatus according to the present embodiment, a water flow generator 3 having impellers 5a and 5b is provided above and below a casing 4 in a treatment water tank 1, and this water flow generator is used as an aerator for biological treatment and mixed when chemicals are added. Since it is made to function as an agitator, complete batch processing can be performed in a single processing water tank, so that equipment costs are low and processing costs can be reduced. Also, since the upper impeller has more blades than the lower one,
The water pressure in the casing 4 increases, and sewage water can be violently collided with the cone member 8 with the baffle plate 7 from the lower impeller 5b, so that oxygen gas and solids can be miniaturized and biological treatment can be performed efficiently. be able to. Further, since the water conduit 2 is provided, the flow in the treatment water tank 1 can be promoted and uniformized, and the treatment efficiency can be further improved.
本発明に係る汚水処理装置は、処理水槽にケーシング
の上下に羽根車を有する水流発生器を設け、この水流発
生器を生物処理時には曝気器として、また薬品添加時に
は混合撹拌機として機能させるようにしたので、単一の
処理水槽で完全なバッチ処理を行なうことができ、した
がって設備コストが安くでき、処理コストを低下させる
ことができる。 また、上部の羽根車の羽根数が下部よりも多くしてい
るので、ケーシング内の水圧を高めることができ、下部
の羽根車から邪魔板付のコーン部材へ汚水を激しく衝突
させて酸素ガスや固形物を微細化し生物処理を効率よく
行なわせることができる。 さらに、導水路を設けたときは、処理水槽内の流動を
助長させて均一化でき、処理効率をより高めることがで
きる。The sewage treatment apparatus according to the present invention is provided with a water flow generator having impellers above and below a casing in a treated water tank, and this water flow generator functions as an aerator during biological treatment and as a mixing and stirring device during chemical addition. Therefore, complete batch processing can be performed in a single processing water tank, so that equipment costs can be reduced and processing costs can be reduced. Also, since the number of blades in the upper impeller is larger than that in the lower part, the water pressure inside the casing can be increased, and the lower impeller impinges sewage violently on the cone member with baffle plates, causing oxygen gas and solid The object can be made finer and biological treatment can be performed efficiently. Further, when the water conduit is provided, the flow in the treated water tank can be promoted and uniformized, and the treatment efficiency can be further improved.
第１図は本発明の一実施例装置の縦断面図、第２図は第
１図のII−II線断面図である。 １……処理水槽、 ２……導水路、 ３……水流発生器、 ４……ケーシング、 5a、5b……羽根車、 ７……邪魔板、 ８……コーン部材。FIG. 1 is a longitudinal sectional view of an apparatus according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. DESCRIPTION OF SYMBOLS 1 ... Treatment water tank, 2 ... Headrace channel, 3 ... Water flow generator, 4 ... Casing, 5a, 5b ... Impeller, 7 ... Baffle plate, 8 ... Cone member.
Claims (3)
水を処理水槽に受け入れて生物学的に処理したのち、該
処理水槽内で沈殿処理し、上澄水を処理水として得るバ
ッチ式の汚水処理装置であって、 前記処理水槽内に、下部の内壁に邪魔板を有するコーン
部材の設けられている筒状のケーシングを垂直状に設け
るとともに、そのケーシングの上下にモータによって回
転駆動される、上部の羽根数が下部の羽根数より多い一
対の羽根車を有する水流発生器を設けたことを特徴とす
る汚水処理装置。1. A batch type sewage treatment in which sewage discharged from a livestock barn or a food factory is biologically treated by receiving it in a treated water tank, and then settled in the treated water tank to obtain supernatant water as treated water. An apparatus, wherein in the treated water tank, a cylindrical casing provided with a cone member having a baffle plate on a lower inner wall is vertically provided, and the upper and lower parts of the casing are rotatably driven by a motor. A water flow generator having a pair of impellers whose number of blades is larger than that of lower blades.
または酸素含有ガスを汚水に溶解させる曝気手段として
機能し、沈殿処理時に化学品を汚水に混合させる混合撹
拌手段の機能を有する請求項１に記載の汚水処理装置。2. The water flow generator functions as aeration means for dissolving oxygen or an oxygen-containing gas in sewage during biological treatment, and has a function of mixing and stirring means for mixing chemicals into sewage during precipitation. Item 2. A sewage treatment apparatus according to item 1.
ら上方に伸びる導水路が垂直状に設けられている請求項
１又は２に記載の汚水処理装置。3. The sewage treatment apparatus according to claim 1, wherein a water conduit extending vertically from a bottom of the treated water tank is provided on an inner wall of the treated water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15907790A JP3137332B2 (en) | 1990-06-18 | 1990-06-18 | Sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15907790A JP3137332B2 (en) | 1990-06-18 | 1990-06-18 | Sewage treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0448996A JPH0448996A (en) | 1992-02-18 |
| JP3137332B2 true JP3137332B2 (en) | 2001-02-19 |
Family
ID=15685718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15907790A Expired - Fee Related JP3137332B2 (en) | 1990-06-18 | 1990-06-18 | Sewage treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3137332B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114394694A (en) * | 2022-01-21 | 2022-04-26 | 江苏津宜水工业装备有限公司 | Zero discharge equipment for advanced treatment and cyclic utilization of industrial wastewater |
| CN115583701B (en) * | 2022-10-13 | 2023-11-17 | 江苏钲清环保科技有限公司 | High-efficient integrated clarifier |
-
1990
- 1990-06-18 JP JP15907790A patent/JP3137332B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0448996A (en) | 1992-02-18 |
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