JPH01130776A - Treatment of organic waste water - Google Patents
Treatment of organic waste waterInfo
- Publication number
- JPH01130776A JPH01130776A JP28911787A JP28911787A JPH01130776A JP H01130776 A JPH01130776 A JP H01130776A JP 28911787 A JP28911787 A JP 28911787A JP 28911787 A JP28911787 A JP 28911787A JP H01130776 A JPH01130776 A JP H01130776A
- Authority
- JP
- Japan
- Prior art keywords
- waste water
- water
- flocculant
- wastewater
- suspended solids
- 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 26
- 239000010815 organic waste Substances 0.000 title description 3
- 239000002351 wastewater Substances 0.000 claims abstract description 36
- 229920000642 polymer Polymers 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 15
- 238000005188 flotation Methods 0.000 claims description 11
- 239000003002 pH adjusting agent Substances 0.000 claims description 5
- 238000004065 wastewater treatment Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 13
- 239000000126 substance Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 235000012149 noodles Nutrition 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 206010062717 Increased upper airway secretion Diseases 0.000 description 1
- 241000269821 Scombridae Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 235000020640 mackerel Nutrition 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 208000026435 phlegm Diseases 0.000 description 1
- 229920000314 poly p-methyl styrene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 206010063401 primary progressive multiple sclerosis Diseases 0.000 description 1
- 235000014102 seafood Nutrition 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Physical Water Treatments (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は有機排水からＢＯＯＳＣ，０ＤＳＮ−Ｈ（ノル
マルヘキサン可溶性物質即ち油脂性物質）及び浮遊固形
物質（ＳＳ：５ｕｓｐｅｎｄｅｄ ５ｏｌｉｄ） （下
文において７゜ツクと称することもある）を除去する有
機排水の処理法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is directed to extracting organic wastewater from organic wastewater such as BOOSC, 0DSN-H (n-hexane soluble substances, oily substances) and suspended solid substances (SS: 5uspended 5solids) (7° in the following text). This invention relates to a method for treating organic wastewater that removes organic waste (sometimes referred to as phlegm).
排水の浄化のために従来行われている方法としては化学
的処理法と生物学的処理法（活性汚泥法）並びに該二者
を併用したものが殆どである。高濃度の８００． Ｃ０
ＤＳＮ−Ｈ，、フロック（浮遊固形物質）等を含む原排
水の処理に当っては先ず薬注処理により多量の夾雑物を
除いた後に生物学的処理を行うのが通常である。この化
学的処理による分離方法には浮上又は沈殿の二法があり
、前者は主に有機物、後者は主に無機物の場合に用いら
れている。Most conventional methods for purifying wastewater include chemical treatment methods, biological treatment methods (activated sludge methods), and combinations of the two. High concentration of 800. C0
When treating raw wastewater containing DSN-H, flocs (suspended solids), etc., it is usual to first remove a large amount of impurities by chemical injection treatment and then perform biological treatment. There are two separation methods using this chemical treatment: flotation and precipitation; the former is mainly used for organic substances, and the latter is mainly used for inorganic substances.
しかも有機排水の分離の多くは薬注によりフロックを生
成させ凝集せしめた後に加圧水を注入するか又は空気を
積極的に注入して浮上分離させるのが通例である。Moreover, in most cases of separation of organic wastewater, it is customary to generate and coagulate flocs by chemical injection, and then inject pressurized water or actively inject air to float and separate the flocs.
上記の従来法における欠点として次の諸事項が挙げられ
る：
（１） フロックの浮上速度が遅く、浮上分離までに
通常の場合に４〜５分間を要するので処理能力が低い；
（２）多量の加圧水（原水に対し３０〜４０％）を使用
するから生物学的処理装置の容積の増大を招くと共に加
工木製造装置を備える必要がある；例えば原水１００ト
ンの処理のために３０％の加圧水を使用すると合計１３
０トンという大量を扱うこととなるし、加圧水で原水を
押し上げるとフロックは９５％以上の水分を含有するも
のとなって処理を妨げ易くなる；
（３）空気の積極的注入による方法では生成フロック及
び（又は）夾雑物の大きさにより浮上能力が左右され一
部大きいフロックは沈殿する場合があり、分離能力に問
題がある。即ち大きいフロックを浮上させるためには注
入時の空気量を多くするか又は空気通人圧力を増加する
必要があり、従って撹拌の状態を招くからフロックが浮
上し難く分離し難くなる；
（４） 浮上分離したフロックの水分含有量は一般に
多（（９５％以上）従って後処理に不便である。The disadvantages of the above conventional methods include the following: (1) The flotation speed of flocs is slow, and it usually takes 4 to 5 minutes to float and separate, resulting in low throughput; (2) Large amounts of Since pressurized water (30-40% of raw water) is used, the volume of the biological treatment equipment increases and it is necessary to install a processed wood manufacturing equipment; for example, to treat 100 tons of raw water, 30% pressurized water is used. Total 13 when used
A large amount of 0 tons is handled, and if the raw water is pushed up with pressurized water, the flocs will contain more than 95% water, which will easily interfere with the treatment; (3) In the method of actively injecting air, the generated flocs And/or the flotation ability is affected by the size of the impurities, and some large flocs may settle, causing problems in the separation ability. That is, in order to float large flocs, it is necessary to increase the amount of air at the time of injection or to increase the air pressure, which results in a state of agitation, which makes it difficult for the flocs to float and separate; (4) The water content of the floated flocs is generally high (95% or more) and is therefore inconvenient for post-treatment.
以上のように浮上処理を行う必要のある有機排水就中食
品工場排水について本発明者は先に高速撹拌方式による
水産物工場排水の処理方法に関して特許（特許第１０１
９６４３号、特公昭５５−６４３５号公報）を取得した
がこの方法の欠点は大量処理する場合の装置に問題が残
ることにある。Regarding organic wastewater, especially wastewater from food factories, which requires flotation treatment as described above, the present inventor previously patented a method for treating wastewater from seafood factories using a high-speed stirring method (Patent No. 101).
No. 9643, Japanese Patent Publication No. 55-6435), but the disadvantage of this method is that problems remain with the equipment when processing a large amount.
本発明者は従前技術及び上記特許の方法の改良について
種々実験を重ねた結果ジェット方式により満足すべき成
果を得ることができた。The present inventor has repeatedly conducted various experiments to improve the prior art and the method disclosed in the above-mentioned patent, and as a result, was able to obtain satisfactory results using the jet method.
本発明の特徴とする点は下記の通りである：（１）
予めｐＨ値が調整され、及び（又は）凝集剤が添加され
ている有機排水からＢＯＤ、 Ｃ０ＤＳＮ−Ｈ及び浮遊
固形物質を除去する有機排水の処理方法において、被処
理排水を約２ｍ以上の高さからジェットニジフタ−の中
へ加圧下に噴出させ、該噴出によって減圧状態を形成さ
せ、該状態下に空気吸入及び高分子凝集剤溶液の吸入を
伴いながら被処理排水を浮遊固形物質浮上分離手段の中
に落下させるか又は該手段の水面に落下させ、かように
して短時間内に浮遊固形物質を分離させる上記の方法。The features of the present invention are as follows: (1)
In a method for treating organic wastewater in which BOD, CODSN-H, and suspended solids are removed from organic wastewater whose pH value has been adjusted in advance and/or a coagulant has been added, the wastewater to be treated is raised to a height of about 2 m or more. The jet water is ejected under pressure into the jet nitrogen pipe, the ejection creates a reduced pressure state, and under this state, the wastewater to be treated is floated and separated by means of floating solid matter while inhaling air and the polymer flocculant solution. or onto the water surface of said means, thus separating the suspended solids within a short time.
（２）有機排水送給手段、ｐＨ調整剤及び（又は）凝集
剤送給手段、有機排水とｐＨ調整剤及び（又は）凝集剤
とを混合する混合手段、該手段により得られた混合液に
空気と高分子凝集剤溶液とを送給添加する送給手段及び
該送給添加後に浮遊固形物質を分離する分離手段を具備
する有機排水の処理装置において、混合手段と分篩手段
との中間に混合液を噴出させ落下させるためのジェット
エジェクターを設けると共に該エジェクターの減圧状態
形成箇所へ空気と高分子凝集剤とを吸入させることによ
って送給する送給口を設けた上記の装置。(2) An organic wastewater supply means, a pH adjuster and/or flocculant supply means, a mixing means for mixing the organic wastewater and the pH adjuster and/or flocculant, and a mixed liquid obtained by the means. In an organic wastewater treatment apparatus comprising a feeding means for feeding and adding air and a polymer flocculant solution, and a separating means for separating suspended solids after the feeding and addition, an organic wastewater treatment device is provided between the mixing means and the sieving means. The above-mentioned device is provided with a jet ejector for spouting and dropping the mixed liquid, and a feeding port for feeding air and polymer flocculant by sucking the air and polymer flocculant into a part of the ejector where a reduced pressure state is formed.
以下に図面を参照して本発明の詳細な説明する。The present invention will be described in detail below with reference to the drawings.
有機排水特に食品工場からの排水をポンプ（Ｐ）の使用
下に流量調整槽（Ｌ）を介して一定の流量を保つ速度で
混合槽（１）又は（２）へ送る。操業をバッチ式或いは
連続式又は両者併用方式で行い得る。混合槽内の被処理
排水へポンプ（Ｐ）使用下に、ｐＨ調整剤例えば苛性ソ
ーダ水溶液又は排水処理に常用される化学物質（消石灰
、塩酸など）を調整剤貯槽（５）からポンプ（Ｐ）を介
して加え、ｐＨメーター使用下に混和してフロックを生
成させる。Organic waste water, especially waste water from a food factory, is sent to a mixing tank (1) or (2) at a rate that maintains a constant flow rate through a flow rate regulating tank (L) using a pump (P). The operation can be carried out batchwise or continuously or in a combination of both. Using the pump (P), a pH adjuster such as a caustic soda aqueous solution or chemicals commonly used in wastewater treatment (slaked lime, hydrochloric acid, etc.) is pumped into the wastewater to be treated in the mixing tank from the adjuster storage tank (5). Add via a pH meter and mix using a pH meter to form a floc.
ｐＨ調整と同時に又は別個に或いはｐＨ調整せずに硫酸
バンド又はＰＡＣ（ポリ塩化アルミニウムの略称；本発
明では多木化学株式会社製のものを用いた）等の凝集剤
を凝集剤貯槽（５）からポンプ（Ｐ）を介し混合槽へ添
加混合してフロックを生成させてもよい。かように予備
処理した混合液（被処理水）をジェットエジェクターへ
送入する場合には約 ２．０〜７．０気圧の圧力を必要
とするので通常は多投式タービンポンプ（図示せず）を
使用する。A flocculant such as sulfate band or PAC (abbreviation for polyaluminum chloride; in the present invention, one manufactured by Taki Chemical Co., Ltd. was used) is added to the flocculant storage tank (5) simultaneously with pH adjustment, separately, or without pH adjustment. The flocs may be generated by adding and mixing them into a mixing tank via a pump (P). When sending the pretreated mixed liquid (water to be treated) to the jet ejector, a pressure of about 2.0 to 7.0 atmospheres is required, so a multi-throw turbine pump (not shown) is usually used. ).
本発明においてもジェットエジェクターにセットした該
タービンポンプの使用下に高さ約２ｍ以上のところから
約２．０気圧以上の加圧下にジェットエジェクターの人
口（８）からノズル（９）を通って混合液を落下させる
。この場合に従前技術におけるような加圧水の添加を行
うことなく混合液のみを落下させる。その際落下水は機
内に減圧状態を形成すると共に空気の吸入により気泡を
保持して落下水からのフロックの浮上分離を容易にする
。In the present invention, the turbine pump set in the jet ejector is used to mix the mixture from the jet ejector's port (8) through the nozzle (9) under a pressure of about 2.0 atmospheres or more from a height of about 2 m or more. Let the liquid fall. In this case, only the mixed liquid is dropped without adding pressurized water as in the prior art. At this time, the falling water creates a reduced pressure state inside the machine, and the suction of air retains air bubbles, making it easier to float and separate the flocs from the falling water.
吸入による空気供給のための該供給口（６−Ａ）に調整
バルブを設けて機内の減圧度を一定に保たせる。同時に
高分子凝集剤溶液貯槽（３）から高分子凝集剤溶液をジ
ェットエジェクターの中へ機内の減圧の利用によって供
給口（６−Ｂ）を経て送り込み混合液と混和しながら落
下させる。供給口（６−Ｂ）に調整バルブと流量計とを
設けて高分子凝集剤溶液の添加量を調整する。高分子凝
集剤としては市販の各種製品を使用し得るが本発明にお
いて好適に用いられるものは例えば日本純薬＠！！商標
名アロンビス、栗田工業■製商標名クリフロック、多水
化学■製商標名タキフロック、三井すイアナミツド面製
商標名アコフロック等である。高分子凝集剤の添加量は
常法に従い被処理排水に対し５〜６０ＰＰＭ、平均３Ｑ
ＰＰＭ前後である。An adjustment valve is provided at the supply port (6-A) for supplying air by suction to maintain a constant degree of vacuum inside the machine. At the same time, the polymer flocculant solution is sent from the polymer flocculant solution storage tank (3) into the jet ejector via the supply port (6-B) by utilizing the reduced pressure inside the machine, and is dropped while being mixed with the liquid mixture. A regulating valve and a flow meter are provided at the supply port (6-B) to adjust the amount of polymer flocculant solution added. As the polymer flocculant, various commercially available products can be used, but the one preferably used in the present invention is, for example, Nippon Junyaku@! ! These include the trade name Alonbis, the trade name Cliff Flock manufactured by Kurita Kogyo ■, the trade name Takifloc manufactured by Tasui Kagaku ■, and the trade name Acofloc manufactured by Mitsui Suiana Mitsume. The amount of polymer flocculant added is 5 to 60 PPM to the wastewater to be treated according to the usual method, average 3Q.
It is around PPM.
落下水はジェットエジェクターの吐出口（１２）から浮
上分離槽（７）の中に落下すると短時間１０秒前後でフ
ロックを浮上分離する。分離液はこれを常法に従って分
離し排出させる。When the falling water falls from the discharge port (12) of the jet ejector into the flotation separation tank (7), the flocs are floated and separated in a short period of about 10 seconds. The separated liquid is separated and discharged according to a conventional method.
本発明によるフロック浮上分離の短時間１０秒前後にお
ける達成に際し考えられる分離条件は下記の通りである
：
（１） ジェットエジェクターへ送給する被処理排水
に対する圧力を一定にすること；
（２） ジェットエジェクターの吸入口即ち送給口か
らの空気及び高分子凝集剤溶液の送給量をフロックの浮
上分離が１０秒前後となるように調整すること；
（３）混合液調整に凝集剤を使用する場合にもフロック
の浮上分離が所期の短時間に達成される量で該凝集剤を
使用すること。The possible separation conditions for achieving the floc flotation separation according to the present invention in a short time of around 10 seconds are as follows: (1) Keeping the pressure constant on the wastewater to be treated to be sent to the jet ejector; (2) Jet Adjust the amount of air and polymer flocculant solution fed from the ejector's inlet or feed port so that floatation and separation of flocs takes about 10 seconds; (3) Use flocculant to adjust the mixed liquid. In any case, the flocculant should be used in such an amount that flotation separation of the flocs is achieved in the desired short time.
上記の諸条件の組合せの作用が本性を成功させると考え
られる。It is believed that the combination of the above conditions makes the nature successful.
実施例Ｉ
ＢＯＤ ５０００ＰＰＭＳＣｏｎ ３２００ＰＰＭ、浮
遊固形物質１８００ＰＰＭ 、 Ｎ−８５００ＰＰＭを
有する鯖の洗浄排水に対しＰＡＣを加えてｐｔ１５．０
付近に調整した後に毎時３０ｍ’／時の量で、三役ター
ビンポンプにより地上３ｍの高さに設置したマルチジェ
ットエジェクターの中へ該調整排水を直接落下せしめる
と共にその際生じる減圧度を利用して高分子凝集剤（商
標名アコフロックＣ４４７）の３０ＰＰＭを添加した所
浮上分離は瞬時（約１０秒以下）にして行われ、８００
約８０％が除去され、残留浮遊固形物質は１０ＰＰＭＳ
Ｎ−Ｈ・残存量はｔ ｐ Ｐ Ｍ以下であった。Example I Adding PAC to mackerel wash wastewater having BOD 5000PPMSCon 3200PPM, suspended solids 1800PPM, N-8500PPM pt 15.0
After adjusting the effluent to the vicinity, the regulated wastewater is directly dropped at a rate of 30m/hour into a multi-jet ejector installed at a height of 3m above the ground using a triple-role turbine pump, and the degree of decompression generated at that time is utilized. When 30 PPM of polymer flocculant (trade name Acofloc C447) was added, flotation separation was instantaneous (about 10 seconds or less) and
Approximately 80% removed and residual suspended solids are 10 PPMS
The residual amount of N-H was less than tpPM.
実施例２
８００１８００ＰＰＭ ５Ｃｏｎ ８６０ＰＰＭＳＮ−
Ｈ６０ＰＰＭ 、浮遊固形物質３５０ＰＰＭを有する麺
類製造工場からの排水を消石灰でｐＨ８，５としてから
ＰＡＣ３００ＰＰＭを加えた後に充分に混和して前記と
同様にジェットエジェクターを用いて浮上分離せしめた
結果、フロックの浮上分離、分離時間は実施例１におけ
ると全く同様であった。なお製麺工場排水の場合には消
石灰の使用で被処理水をアルカリ側にｐＨ調整した後に
通常処理を行う方がフロック形成が良好であり、従って
浮上分離も容易となる。Example 2 8001800PPM 5Con 860PPMSN-
H60PPM, wastewater from a noodle manufacturing factory containing 350PPM of suspended solids was adjusted to pH 8.5 with slaked lime, then PAC300PPM was added, thoroughly mixed, and floated and separated using a jet ejector in the same manner as above, resulting in the floating of flocs. The separation and separation time were exactly the same as in Example 1. In the case of noodle factory wastewater, floc formation is better when the pH of the water to be treated is adjusted to the alkaline side using slaked lime and then the normal treatment is carried out, and therefore flotation separation becomes easier.
本発明の効果は従来法におけるような空気の積極的注入
によることなく、又は加圧水を使用することなく瞬時（
１０秒前後）にしてフロックを浮上分離させ、分離した
フロックの含水量も従来法におけるものよりかなり低く
８５〜９０％程度であり、且つ大量処理設備は簡易であ
り、費用も極めて低廉である点に゛ある。The effects of the present invention can be achieved instantly (without the need for active injection of air or the use of pressurized water as in conventional methods).
The flocs are separated by flotation (approximately 10 seconds), and the moisture content of the separated flocs is about 85 to 90%, which is considerably lower than that in the conventional method, and the mass processing equipment is simple and the cost is extremely low. There is.
添付図面の第１図は本発明の装置及び各手段の配置の概
要を示す。第２図は本発明で使用するジェットエジェク
ターの一例を示す。
１及び２・・・・混合槽、
３・・・・高分子凝集剤液貯槽、
４・・・・アルカリ液貯槽、 ５・・・・ＰＡＣ液貯槽
、６・・・・ジェットエジェクター、
６Ａ・・・・空気送給口、
６Ｂ・・・・高分子凝集剤液送給口、
７・・・・分離槽、 ８・・・・加圧された混合液人口
、９・・・・ノズル、１０・・・・スロート、１１・・
・・テ′イフ二−ザー、１２・・・・吐出口、Ｌ・・・
・流量調整槽、 Ｐ・・・・ポンプ、ＰＨ・・・・ｐ
Ｈ値測定器、 Ｍ・・・・撹拌機、Ｆ・・・・浮上フ
ロック、 Ｔ・・・・処理水。FIG. 1 of the accompanying drawings schematically shows the arrangement of the apparatus and means of the present invention. FIG. 2 shows an example of a jet ejector used in the present invention. 1 and 2... Mixing tank, 3... Polymer flocculant liquid storage tank, 4... Alkaline liquid storage tank, 5... PAC liquid storage tank, 6... Jet ejector, 6A. ... Air supply port, 6B ... Polymer flocculant liquid feed port, 7 ... Separation tank, 8 ... Pressurized mixed liquid population, 9 ... Nozzle, 10... Throat, 11...
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・…
・Flow rate adjustment tank, P...pump, PH...p
H value measuring device, M... Stirrer, F... Floating floc, T... Treated water.
Claims (2)
加されている有機排水からＢＯＤ、ＣＯＤ、Ｎ−Ｈ及び
浮遊固形物質を除去する有機排水の処理方法において、
被処理排水を約２ｍ以上の高さからジェットエジェクタ
ーの中へ加圧下に噴出させ該噴出によって減圧状態を形
成させ、該状態下に空気吸入及び高分子凝集剤溶液の吸
入を伴いながら被処理排水を浮遊固形物質浮上分離手段
の中に落下させるか又は該手段の水面に落下させ、かよ
うにして短時間内に浮遊固形物質を浮上分離させること
を特徴とする上記の方法。(1) A method for treating organic wastewater in which BOD, COD, N-H and suspended solids are removed from organic wastewater whose pH value has been adjusted in advance and/or a flocculant has been added,
The wastewater to be treated is ejected under pressure into a jet ejector from a height of approximately 2 m or more, the ejection creates a reduced pressure state, and under this state, the wastewater to be treated is ejected while inhaling air and the polymer flocculant solution. The above-mentioned method is characterized in that the suspended solids are allowed to fall into the means for flotation or on the water surface of the means, thereby flotating and separating the suspended solids within a short period of time.
剤送給手段、有機排水とｐＨ調整剤及び（又は）凝集剤
とを混合する混合手段、該手段により得られた混合液に
空気と高分子凝集剤溶液とを送給添加する送給手段及び
送給添加後に浮遊固形物質を分離する分離手段を具備す
る有機排水の処理装置において、混合手段と分離手段と
の中間に混合液を噴出させ落下させるジェットエジェク
ターを設けると共に該エジェクターの減圧状態形成箇所
へ空気と高分子凝集剤とを吸入させることによって送給
する送給口を設けたことを特徴とする上記の装置。(2) An organic wastewater supply means, a pH adjuster and/or flocculant supply means, a mixing means for mixing the organic wastewater and the pH adjuster and/or flocculant, and a mixed liquid obtained by the means. In an organic wastewater treatment apparatus equipped with a feeding means for feeding and adding air and a polymer flocculant solution and a separating means for separating suspended solids after the feeding and addition, a mixed liquid is placed between the mixing means and the separating means. The above-mentioned device is characterized in that it is provided with a jet ejector for ejecting and dropping air and a polymer flocculant, and a feeding port for feeding air and a polymer flocculant by sucking it into a place where a reduced pressure state is formed in the ejector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28911787A JPH07121387B2 (en) | 1987-11-16 | 1987-11-16 | Organic wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28911787A JPH07121387B2 (en) | 1987-11-16 | 1987-11-16 | Organic wastewater treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01130776A true JPH01130776A (en) | 1989-05-23 |
| JPH07121387B2 JPH07121387B2 (en) | 1995-12-25 |
Family
ID=17739000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28911787A Expired - Lifetime JPH07121387B2 (en) | 1987-11-16 | 1987-11-16 | Organic wastewater treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07121387B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0699167A (en) * | 1992-09-17 | 1994-04-12 | Idec Izumi Corp | Flotation separation method for floating particles in liquid and device therefor |
| JP2011521780A (en) * | 2008-05-28 | 2011-07-28 | ブイダブリュエス・ウエストガース・リミテッド | Fluid processing apparatus and fluid processing method |
| KR20190119651A (en) * | 2017-04-28 | 2019-10-22 | 엘지전자 주식회사 | Method for reporting channel state information in wireless communication system and apparatus therefor |
-
1987
- 1987-11-16 JP JP28911787A patent/JPH07121387B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0699167A (en) * | 1992-09-17 | 1994-04-12 | Idec Izumi Corp | Flotation separation method for floating particles in liquid and device therefor |
| JP2529174B2 (en) * | 1992-09-17 | 1996-08-28 | 和泉電気株式会社 | Method and device for floating separation of suspended particles in liquid |
| JP2011521780A (en) * | 2008-05-28 | 2011-07-28 | ブイダブリュエス・ウエストガース・リミテッド | Fluid processing apparatus and fluid processing method |
| KR20190119651A (en) * | 2017-04-28 | 2019-10-22 | 엘지전자 주식회사 | Method for reporting channel state information in wireless communication system and apparatus therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07121387B2 (en) | 1995-12-25 |
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