JPH0445895A - Waste water treating equipment - Google Patents
Waste water treating equipmentInfo
- Publication number
- JPH0445895A JPH0445895A JP2154641A JP15464190A JPH0445895A JP H0445895 A JPH0445895 A JP H0445895A JP 2154641 A JP2154641 A JP 2154641A JP 15464190 A JP15464190 A JP 15464190A JP H0445895 A JPH0445895 A JP H0445895A
- Authority
- JP
- Japan
- Prior art keywords
- packed tower
- liquid
- sludge
- reaction tank
- supplied
- 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
- 239000002351 wastewater Substances 0.000 title description 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 47
- 239000010802 sludge Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000000108 ultra-filtration Methods 0.000 claims description 26
- 239000012141 concentrate Substances 0.000 claims description 25
- 238000004065 wastewater treatment Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 abstract description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 238000005273 aeration Methods 0.000 abstract description 7
- 238000012856 packing Methods 0.000 abstract description 7
- 230000007423 decrease Effects 0.000 abstract description 4
- 239000000706 filtrate Substances 0.000 abstract description 3
- 230000008719 thickening Effects 0.000 abstract 5
- 239000012528 membrane Substances 0.000 description 24
- 244000005700 microbiome Species 0.000 description 11
- 238000000926 separation method Methods 0.000 description 9
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- 239000005708 Sodium hypochlorite Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000010782 bulky waste Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 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)
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、好気性生物処理用の反応槽と、反応槽から
出た混合液を汚泥濃縮液と処理水に分離する限外濾過装
置とを組み合わせて構成せられた排水処理装置に関する
。[Detailed Description of the Invention] [Field of Industrial Application] This invention comprises a reaction tank for aerobic biological treatment, an ultrafiltration device that separates the mixed liquid discharged from the reaction tank into sludge concentrate and treated water. The present invention relates to a wastewater treatment device configured by combining the following.
［従来技術および解決すべき課題］
上記の如くバイオリアクターと分離膜による固液分離と
を組み合わせたメンブレンバイオリアクターによる排水
処理は、分離膜の性能の向上により広い分野で実用化さ
れつつある。排水処理分野においても、再生利用を目的
としたビル排水の処理、し尿処理などに適用され、成果
を上げつつある。[Prior Art and Problems to be Solved] As described above, wastewater treatment using a membrane bioreactor that combines a bioreactor and solid-liquid separation using a separation membrane is being put into practical use in a wide range of fields due to improvements in the performance of separation membranes. In the field of wastewater treatment, it is being applied to the treatment of building wastewater for recycling purposes, human waste treatment, etc., and results are being achieved.
一般的なメンブレンバイオリアクターにょろり１水処理
は、第２図に示すフローによって行われている。同図に
おいて、原水は原水調整槽（１）へ供給され、濾過器（
２）を経て反応槽（３）へ送られる。反応槽（３）は、
活性汚泥中の好気性微生物による浄化作用で原水を浄化
する働きをする。微生物の浄化作用は酸素を必要とし、
所要量の空気が散気装置（９）によって反応槽（３）へ
供給される。Typical membrane bioreactor Nyorori 1 water treatment is carried out according to the flow shown in Figure 2. In the figure, raw water is supplied to a raw water adjustment tank (1), and a filter (
2) and sent to the reaction tank (3). The reaction tank (3) is
It works to purify raw water through the purification action of aerobic microorganisms in activated sludge. The purifying action of microorganisms requires oxygen,
The required amount of air is supplied to the reaction tank (3) by a diffuser (9).
反応槽（３）から出た活性汚泥混合液は、循環ポンプ（
４）で限外濾過装置（５）へ送られ、これによって汚泥
濃縮液と処理水に分離される。限外濾過装置（５）にお
いて分離がなされる時、汚泥などによって間膜の目詰ま
りが生じて膜性能が低下しないように、膜面流速を高く
する必要がある。そのため、濾過量に対し通常１０〜２
０倍の量の汚泥濃縮液を反応槽（３）へ循環する必要が
ある。The activated sludge mixture discharged from the reaction tank (3) is passed through the circulation pump (
4), it is sent to an ultrafiltration device (5), where it is separated into sludge concentrate and treated water. When separation is performed in the ultrafiltration device (5), it is necessary to increase the flow velocity at the membrane surface so that the intermembrane membrane is not clogged with sludge and the like and the membrane performance is not degraded. Therefore, the amount of filtration is usually 10 to 2
It is necessary to circulate 0 times the amount of sludge concentrate to the reaction tank (3).
限外濾過装置（５）へ供給された活性汚泥混合液のうち
濾過されない汚泥濃縮液すなわち循環液は、循環ライン
（１１）によって反応槽（３）へ直接返送される。Of the activated sludge mixture supplied to the ultrafiltration device (5), the unfiltered sludge concentrate, that is, the circulating liquid, is directly returned to the reaction tank (3) via the circulation line (11).
限外濾過膜が目詰まりを生じて膜性能が低下した場合、
洗浄槽（７）の次亜塩素酸ナトリウム溶液で膜を循環洗
浄し、膜性能を回復させる。If the ultrafiltration membrane becomes clogged and the membrane performance decreases,
The membrane is circulated and cleaned with the sodium hypochlorite solution in the cleaning tank (7) to restore membrane performance.
限外濾過装置（５）で濾過された濾液すなわち処理液は
、処理水槽（６）へ移送された後、ポンプ（１０）で雑
用水として給水される。The filtrate, that is, the treated liquid filtered by the ultrafiltration device (5) is transferred to the treated water tank (6), and then supplied as miscellaneous water by the pump (10).
このタイプの排水処理は、原理的には以下に示すメリッ
トを持った優れた技術である。In principle, this type of wastewater treatment is an excellent technology with the following advantages:
■汚泥の性状に関係なく完全な固液分離ができるため、
反応槽内に高濃度の微生物を保持できる。したがって、
反応槽の容積を小さくできる。■Complete solid-liquid separation is possible regardless of the properties of the sludge, so
A high concentration of microorganisms can be maintained in the reaction tank. therefore,
The volume of the reaction tank can be reduced.
■微生物フロックの沈降性が固液分離に影響しないので
、運搬管理が容易であると同時に、常に安定した処理水
質を保持し得る。■Since the sedimentation of microbial flocs does not affect solid-liquid separation, transportation management is easy, and at the same time stable treated water quality can be maintained at all times.
■処理水は清澄であるうえに、大腸菌群なども除去され
るので再利用に適する。■The treated water is not only clear but also free of coliform bacteria, making it suitable for reuse.
■余剰汚泥の発生量が少ない。■The amount of surplus sludge generated is small.
しかし、膜分離装置は、限外濾過膜表面への汚泥による
目詰まりに起因する膜性能（透過流束ρ／ ｍ ２ ・
ｈの単位で示される）の低下を防止するように、膜面流
速を高くする必要があり、そのため限外濾過装置から反
応槽へ多量の循環液を直接返送させる循環ポンプ動力と
して多大なエネルギーを消費している。However, membrane separation equipment has a low membrane performance (permeation flux ρ/m 2 ・
It is necessary to increase the membrane surface flow velocity to prevent a decrease in the flow rate (expressed in units of h). Therefore, a large amount of energy is required to power the circulation pump that returns a large amount of circulating liquid directly from the ultrafiltration device to the reaction tank. is consuming.
また、活性汚泥槽では、活性汚泥と汚濁物質の混合接触
、および汚濁物質の酸化分解のために、曝気が必要であ
り、曝気動力として多大なエネルギーを消費している。Furthermore, in activated sludge tanks, aeration is required for mixing and contacting activated sludge and pollutants and for oxidative decomposition of pollutants, and a large amount of energy is consumed as aeration power.
かくの如くで、メンブレンバイオリアクターは、原理的
には優れた技術ではあるが、エネルギー消費量が多いた
め、一部のビル排水の再利用目的で実用化されているぐ
らいで、下水処理場における水処理への全面的な適用は
未だなされていない。As described above, membrane bioreactors are an excellent technology in principle, but because they consume a lot of energy, they have only been put into practical use for the purpose of reusing wastewater from some buildings; Full application to water treatment has not yet been achieved.
本発明は、上記の如きメンブレンバイオリアクターの問
題を解決することを目的とし、エネルギー消費量の低減
を達成し得る排水処理装置を提供するものである。The present invention aims to solve the problems of membrane bioreactors as described above, and provides a wastewater treatment device that can reduce energy consumption.
［課題の解決手段］
本発明は、上記目的を達成すべく工夫されたものであっ
て、好気性生物処理用の反応槽と、反応槽から出た汚泥
混合液を汚泥濃縮液と処理水に分離する限外濾過装置と
を備え、かつ汚泥濃縮液を限外濾過装置から反応槽へ返
送する循環ラインを有する排水処理装置において、上記
循環ラインに充填塔が設けられていることを特徴とする
排水処理装置である。[Means for solving the problems] The present invention has been devised to achieve the above object, and includes a reaction tank for aerobic biological treatment, and a sludge mixture discharged from the reaction tank into a sludge concentrate and treated water. A wastewater treatment device comprising an ultrafiltration device for separation and a circulation line for returning sludge concentrate from the ultrafiltration device to a reaction tank, characterized in that the circulation line is provided with a packed tower. This is a wastewater treatment device.
充填塔には、ポールリング、アシヒリングなどの充填物
が充填されている。充填物としては、微生物の発生など
により閉塞しないようなある程度の大きさの空間を持っ
たものが好ましい。The packed tower is filled with packing materials such as Pall rings and Aschig rings. It is preferable that the filling has a certain size of space so that it will not become clogged due to the growth of microorganisms.
充填、塔の設置位置としては、限外濾過装置の操作圧力
の残圧により充填塔上部へ供給された汚泥濃縮液が他の
動力を必要とせず反応槽へ返送できるように、反応槽の
上部が望ましい。The filling and tower installation location is at the top of the reaction tank so that the sludge concentrate supplied to the top of the packed tower due to the residual operating pressure of the ultrafiltration device can be returned to the reaction tank without the need for other power. is desirable.
［作 用コ
本発明による排水処理装置では、汚泥濃縮液を反応槽へ
返送する循環ラインに充填塔が設けられているので、充
填塔を通る汚泥濃縮液は同塔内の充填物の表面を分散流
下する間に気液接触により酸素を吸収する。そのため、
散気装置によって反応塔に供給すべき空気量は減少せら
れる。[Function] In the wastewater treatment apparatus according to the present invention, a packed tower is provided in the circulation line for returning the sludge concentrate to the reaction tank, so the sludge concentrate passing through the packed tower does not cover the surface of the packing in the column. Oxygen is absorbed by gas-liquid contact during the dispersed flow. Therefore,
The amount of air to be supplied to the reaction column is reduced by the aeration device.
また、汚泥濃縮液が充填塔を通る間に、充填物表面に成
長生息する微生物が汚濁物質の浄化反応を生起する。Furthermore, while the sludge concentrate passes through the packed tower, microorganisms that grow and live on the surface of the packed material cause a reaction to purify pollutants.
さらに、汚泥濃縮液は、外濾過装置の操作圧力の残圧を
利用し、限外濾過装置から充 塔上部へ送られる。Furthermore, the sludge concentrate is sent from the ultrafiltration device to the upper part of the packing tower using the residual pressure of the operating pressure of the ultrafiltration device.
［実 施 例］
つぎに、本発明を図示の実施例によって具体的に説明す
る。[Example] Next, the present invention will be specifically explained with reference to illustrated examples.
第２図において、厨房排水、雑排水など原水は、粗大ゴ
ミを取り除いた後、原水調整槽（１）へ供給される。原
水調整槽（１）は原水の経時的な負荷変動を緩和し、安
定した量を処理工程に送る働きがある。原水調整槽（１
）に受けられた原水は、濾過器（２）で懸濁粒子を除去
した後、反応槽（３）へ送られる。反応槽（３）は、活
性汚泥中の好気性微生物による浄化作用で原水を浄化す
る働きをする。微生物の浄化作用は酸素を必要とする。In FIG. 2, raw water such as kitchen wastewater and gray water is supplied to a raw water adjustment tank (1) after bulky waste is removed. The raw water adjustment tank (1) has the function of alleviating load fluctuations over time of raw water and sending a stable amount of raw water to the treatment process. Raw water adjustment tank (1
) The raw water received in the reactor is sent to the reaction tank (3) after removing suspended particles in the filter (2). The reaction tank (3) functions to purify raw water by the purification action of aerobic microorganisms in activated sludge. The purifying action of microorganisms requires oxygen.
一般には所要量の空気を散気装置（９）によって反応槽
（３）へ供給するが、本装置では後述するように充填塔
（８）において気液接触による酸素供給が行なわれるの
で、不足分のみを散気装置（９）で供給するだけでよい
。反応槽（３〉においては、ＭＬＳＳ（曝気槽内の混合
液中の浮遊物質ＳＳを示し、主として活性汚泥で混合液
中に存在する微生物量を間接的に示すもの）濃度を６，
０００〜１０． ＯＯＯｍｇ／ ／と高く維持して運
転を行なうことにより、処理速度が早く容量が小さくな
る。Generally, the required amount of air is supplied to the reaction tank (3) by the aeration device (9), but in this device, oxygen is supplied by gas-liquid contact in the packed tower (8) as described later, so the shortage is It is only necessary to supply only the air with the air diffuser (9). In the reaction tank (3), the MLSS (indicates suspended solids SS in the mixed liquid in the aeration tank, which indirectly indicates the amount of microorganisms present in the mixed liquid mainly in activated sludge) concentration is 6,
000-10. By operating at a high OOOmg/ /, the processing speed becomes faster and the capacity becomes smaller.
反応槽（３）から出た活性汚泥混合液は、循環ポンプ（
４）で限外濾過装置（５）へ送られ、これによって汚泥
濃縮液と処理水に分離される。限外濾過装置（５）に使
用される膜としては、ポリアミド、ポリスルホン、ポリ
アクリロニトリルなどの限外濾過膜がある。限外濾過装
置（５〉において分離がなされる時、汚泥などによって
間膜の目詰まりが生じて前述の膜性能が低下しないよう
に、膜面流速を高くする必要がある。そのため、濾過量
に対し１０〜２０倍の量の汚泥濃縮液を反応槽（３）へ
循環する必要がある。The activated sludge mixture discharged from the reaction tank (3) is passed through the circulation pump (
4), it is sent to an ultrafiltration device (5), where it is separated into sludge concentrate and treated water. Examples of the membrane used in the ultrafiltration device (5) include ultrafiltration membranes made of polyamide, polysulfone, polyacrylonitrile, and the like. When separation is performed in the ultrafiltration device (5), it is necessary to increase the flow rate at the membrane surface to prevent the aforementioned membrane performance from decreasing due to clogging of the membrane by sludge, etc. It is necessary to circulate 10 to 20 times the amount of sludge concentrate to the reaction tank (3).
本発明の排水処理装置では、限外濾過装置（５）から反
応槽（３）へ汚泥濃縮液を返送する循環ライン（１１）
に充填塔が設けられている。In the wastewater treatment device of the present invention, the circulation line (11) returns the sludge concentrate from the ultrafiltration device (5) to the reaction tank (3).
A packed tower is installed.
限外濾過装置（５）へ供給された活性汚泥混合液のうち
濾過されない汚泥濃縮液すなわち循環液は、限外濾過装
置（５）の操作圧力の残圧によってまず充填塔（８）へ
送られ、ついでここから反応槽（３）へ返送される。充
填塔（８）は、塔内に充填物が充填されている。充填物
としては、ポールリング、ラシヒリングなどの充填物が
充填されている。充填物としては、微生物の発生などに
より閉塞しないようなある程度の大きさの空間を持った
ものが好ましい。したがって塩ビ管を数Ｑｍ〜数１０ｃ
ｍの間で切ったものを充填物として使用することもでき
る。充填塔（８）の上部へ送られた汚泥濃縮液は、充填
塔（８）内の充填物の表面を分散流下し、反応槽（３）
へ送られる。汚泥濃縮液は充填塔（８）を流下する間に
気液接触により酸素を吸収する。Of the activated sludge mixture supplied to the ultrafiltration device (5), the unfiltered sludge concentrate, that is, the circulating fluid, is first sent to the packed tower (8) by the residual pressure of the operating pressure of the ultrafiltration device (5). , from where it is returned to the reaction tank (3). The packed column (8) is filled with packing materials. As the filling material, a material such as a Paul ring or a Raschig ring is used. It is preferable that the filling has a certain size of space so that it will not become clogged due to the growth of microorganisms. Therefore, the PVC pipe is several Qm to several 10c.
It is also possible to use pieces cut between m as fillings. The sludge concentrate sent to the upper part of the packed tower (8) is dispersed and flows down the surface of the packing in the packed tower (8), and then flows into the reaction tank (3).
sent to. The sludge concentrate absorbs oxygen through gas-liquid contact while flowing down the packed tower (8).
充填塔（８）の主な働きは、上記のように、汚泥濃縮液
すなわち循環液に酸素を供給することであるが、充填物
表面に成長生息する微生物による汚濁物質の浄化反応も
生起する。As mentioned above, the main function of the packed tower (8) is to supply oxygen to the sludge concentrate, that is, the circulating liquid, but a purification reaction of pollutants by microorganisms growing and living on the surface of the packing also occurs.
充填塔（８）の設置位置としては、限外濾過装置（５）
の操作圧力の残圧により充填塔上部へ供給された汚泥濃
縮液が他の動力を必要とせず反応槽（３）へ返送できる
ように、反応槽（３）の上部が望ましい。The installation position of the packed tower (8) is the ultrafiltration device (5)
The upper part of the reaction tank (3) is preferable so that the sludge concentrate supplied to the upper part of the packed column due to the residual pressure of the operating pressure of can be returned to the reaction tank (3) without requiring any other power.
洗浄槽（７）には次亜塩素酸ナトリウム溶液が入れてあ
り、限外濾過膜が目詰まりを生じて膜性能が低下した場
合、この溶液で膜を循環洗浄し、膜性能を回復させる。The cleaning tank (7) contains a sodium hypochlorite solution, and when the ultrafiltration membrane becomes clogged and its performance deteriorates, the membrane is circulated and cleaned with this solution to restore the membrane performance.
限外濾過装置（５）で濾過された濾液すなわち処理液は
、処理水槽（６）へ移送された後、ポンプ（１０）で水
洗トイレ用水などの雑用水として給水される。The filtrate, that is, the treated liquid filtered by the ultrafiltration device (5) is transferred to the treated water tank (6), and then supplied by the pump (10) as miscellaneous water such as water for flushing toilets.
［発明の効果］
本発明の排水処理装置によれば、汚泥濃縮液を反応槽へ
返送する循環ラインに充填塔が設けられているので、充
填塔を通る汚泥濃縮液は同塔内の充填物の表面を分散流
下する間に気液接触により酸素を吸収する。そのため、
散気装置によって反応塔に供給すべき空気量を減少させ
ることができるので、曝気動力としてのエネルギーを大
幅に削減することができる。[Effects of the Invention] According to the wastewater treatment apparatus of the present invention, the packed tower is provided in the circulation line that returns the sludge concentrate to the reaction tank, so the sludge concentrate passing through the packed tower is mixed with the packed material in the column. Oxygen is absorbed by gas-liquid contact while dispersing and flowing down the surface. Therefore,
Since the air diffuser can reduce the amount of air to be supplied to the reaction tower, the energy required for aeration power can be significantly reduced.
また、上記のように汚泥濃縮液が充填塔を通る間に、充
填物表面に成長生息する微生物が汚濁物質の浄化反応を
生起する。そのため、反応処理速度を促進させ、反応塔
の容量を小さくすることかできる。Further, as described above, while the sludge concentrate passes through the packed tower, the microorganisms that grow and live on the surface of the packed material cause a reaction to purify pollutants. Therefore, the reaction processing speed can be accelerated and the capacity of the reaction column can be reduced.
さらに、汚泥濃縮液は、外温過装置の操作圧力の残圧を
利用し、限外濾過装置から充填塔上部へ送ることができ
る。このため充填塔を設けたことによるポンプ動力の上
昇は全く必要ない。Furthermore, the sludge concentrate can be sent from the ultrafiltration device to the upper part of the packed column by using the residual pressure of the operating pressure of the external heating device. Therefore, there is no need to increase the pump power by providing a packed tower.
かくして、本発明によれば、エネルギー消費量の低減を
達成することができると共に、反応処理速度の促進およ
び反応塔の容量の縮小を達成することができる。Thus, according to the present invention, it is possible to achieve a reduction in energy consumption, as well as to accelerate the reaction processing rate and reduce the capacity of the reaction column.
第１図は本発明の実施例を示すフローシートであり、第
２図は従来技術を示すフローシートである。
（３）・・・反応槽、（５）・・・限外濾過装置、（８
）・・・充填塔、（１１）・・・循環ライン。
以 上FIG. 1 is a flow sheet showing an embodiment of the present invention, and FIG. 2 is a flow sheet showing a conventional technique. (3)...Reaction tank, (5)...Ultrafiltration device, (8
)... Packed tower, (11)... Circulation line. that's all
Claims (1)
液を汚泥濃縮液と処理水に分離する限外濾過装置とを備
え、かつ汚泥濃縮液を限外濾過装置から反応槽へ返送す
る循環ラインを有する排水処理装置において、上記循環
ラインに充填塔が設けられていることを特徴とする排水
処理装置。Equipped with a reaction tank for aerobic biological treatment and an ultrafiltration device that separates the sludge mixture discharged from the reaction tank into sludge concentrate and treated water, and returns the sludge concentrate from the ultrafiltration device to the reaction tank. What is claimed is: 1. A wastewater treatment device having a circulation line, characterized in that the circulation line is provided with a packed tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2154641A JPH082439B2 (en) | 1990-06-13 | 1990-06-13 | Wastewater treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2154641A JPH082439B2 (en) | 1990-06-13 | 1990-06-13 | Wastewater treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0445895A true JPH0445895A (en) | 1992-02-14 |
| JPH082439B2 JPH082439B2 (en) | 1996-01-17 |
Family
ID=15588657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2154641A Expired - Fee Related JPH082439B2 (en) | 1990-06-13 | 1990-06-13 | Wastewater treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH082439B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020087670A (en) * | 2001-05-15 | 2002-11-23 | 김원빈 | water-screen air cleaner. |
| JP2004358372A (en) * | 2003-06-05 | 2004-12-24 | Kuniyoshi Higuchi | Method of treating grease-trap waste solution |
| CN100378007C (en) * | 2006-04-30 | 2008-04-02 | 湖南大学 | Method for treating cadmium-containing waste water by intensified ultrafiltration of hollow fiber ultrafiltration membrane and foam floatation |
| JP2017109195A (en) * | 2015-12-18 | 2017-06-22 | メタウォーター株式会社 | Waste water treatment system |
-
1990
- 1990-06-13 JP JP2154641A patent/JPH082439B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020087670A (en) * | 2001-05-15 | 2002-11-23 | 김원빈 | water-screen air cleaner. |
| JP2004358372A (en) * | 2003-06-05 | 2004-12-24 | Kuniyoshi Higuchi | Method of treating grease-trap waste solution |
| CN100378007C (en) * | 2006-04-30 | 2008-04-02 | 湖南大学 | Method for treating cadmium-containing waste water by intensified ultrafiltration of hollow fiber ultrafiltration membrane and foam floatation |
| JP2017109195A (en) * | 2015-12-18 | 2017-06-22 | メタウォーター株式会社 | Waste water treatment system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH082439B2 (en) | 1996-01-17 |
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