US3875060A - Flow mixer - Google Patents

Flow mixer Download PDF

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Publication number
US3875060A
US3875060A US47957174A US3875060A US 3875060 A US3875060 A US 3875060A US 47957174 A US47957174 A US 47957174A US 3875060 A US3875060 A US 3875060A
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Prior art keywords
plate member
cylindrical hollow
liquid medium
sleeve
opening
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English (en)
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Shigeki Noma
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Sun Engineering Co Inc
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Sun Engineering Co Inc
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1284—Mixing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281—Installations for water purification using chemical agents
    • 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

Definitions

  • ABSTRACT A flow mixer for stirring or mixing liquid medium by the current of the liquid medium passing through the flow mixer, which may be referred to as a floculator.
  • the flow mixer comprises a substantially drum-shaped housing, within which a sleeve of a substantially splitring shaped section having a clearance is provided in alignment with the longitudinal axis of the drumshaped housing Two sets of alternately radially outwardly and inwardly extending barriers are respectively secured to the outer peripheral surface of the sleeve and the inner peripheral surface of the housing.
  • Liquid medium to be stirred or mixed enter the hollow of the sleeve and then the space between the sleeve and the housing through the clearance. Due to a particular arrangement of the barriers, the liquid medium within the space therebetween undergoes alternate expansion and contraction thereby being severely stirred or mixed.
  • the present invention relates in general to a device for stirring liquid medium as it passes therethrough under pressure.
  • the present invention also pertains to a flow mixer for mixing liquid medium with an additive, which may be liquid, solid or gas or a mixture thereof, by the current of the liquid medium passing through the flow mixer under pressure.
  • an additive which may be liquid, solid or gas or a mixture thereof
  • the present invention has a wide range of application in many fields of industry.
  • the device according to the present invention may be advantageously used in sewage disposal and, therefore. description of the present invention will now be made as applied in the process of sewage disposal.
  • the sewage disposing process essentially requires the sewage to be mixed with such a chemical additive as one or a mixture of coagulant, disinfectant, neutralizer, catalyst and/or others, which may be liquid, solid or gas or a mixture thereof, before the sewage to be disposed is fed to a settling or thickening tank or any other subsequent process, though the type of such chemical additive is selected depending on the type of the sewage to be disposed.
  • a chemical additive as one or a mixture of coagulant, disinfectant, neutralizer, catalyst and/or others, which may be liquid, solid or gas or a mixture thereof, before the sewage to be disposed is fed to a settling or thickening tank or any other subsequent process, though the type of such chemical additive is selected depending on the type of the sewage to be disposed.
  • a mixer for mixing the sewage with the chemical additive, a mixer has generally been employed ofa type comprising a rotary blade assembly.
  • this conventionally employed mixer so far as the sewage is processed by the addition oflime and aluminum surfate so as to nucleate or agglomerate impurities or contaminations that form the sewage together with water and by the subsequent addition of high polymer coagulant to render the agglomerated impurities or contaminations to separate from the water and subsequently to form a flock thereof floating on or near the surface of the body of the separated water, it has well experienced that the agglomeration of impurities or contaminations, that is taking place or has already taken place is hampered or destroyed as the sewage is fed through the rotary blade mixer. This is particularly considerable when the rotary blade assembly of the mixer is operated at a relatively high speed and, therefore. continuous, but reliable sewage disposal is often hampered, substantially reducing a sewage disposal efficiency.
  • flow mixer of cyclone type designed such as to permit the sewage to enter a mixing chamber of the flow mixer in a tangential direction and to permit the sewage, mixed with a coagulant, to emerge from an outlet formed at the center of the top of the mixing chamber.
  • the stirring speed is so low that satisfactory mixing of the sewage with the coagulant is hardly achieved and, therefore, in order to purify the sewage satisfactorily, one or more flow mixers of the same or different structure or a blade stirrer or agitator have to be connected in series with the cyclone-type flow mixer.
  • the conventional cyclone-type flow mixer requires a relatively complicated assemblage and a relatively high cost of maintenance and does not operate to produce the sewage satisfactorily mixed with the chemical additive.
  • an essential object of the present invention is to provide an improved flow stirrer which does not employ any movable part such as a rotary blade assembly and which can satisfactorily stir a liquid medium even through the latter flows therethrough at a relatively low speed, thereby substantially eliminating the disadvantages and inconveniences inherent in the conventional devices for a similar purpose.
  • Another object of the present invention is to provide an improved flow stirrer of the type referred to above, which can be manufactured in such a compact size that no largespace for installation is required and which is serviceable for a substantially long period of time with no trouble and with maintenance inexpensive.
  • Another related object of the present invention is to provide a tower assembly of a plurality of vertically stacked flow mixers so that liquid medium to be disposed is sequentially mixed with different kinds of material to be added or mixed thereto at different stages.
  • a flow stirrer which comprises a substantially drum-shaped housing composed of a cylindrical hollow body and a pair of closure members secured on both ends of the cylindrical hollow body.
  • a sleeve extends between the closure members in alignment with the longitudinal axis of the cylindrical hollow body and has a split portion communicating between the hollow of the sleeve and a space defined by the closure members between the sleeve and the cylindrical hollow body.
  • a partition plate Adjacent the split portion, a partition plate having both ends terminating in contact with the associated closure members extends between the sleeve and the cylindrical body with both edges secured to said sleeve and cylindrical body, respectively.
  • a first one of the closure members is formed at its center with an opening communicated to the hollow of the sleeve and the other closure member is formed adjacent the periphery thereof with an opening that is communicated to a portion of the space on one side of the partition plate remote from the split portion.
  • two sets of a plurality of barriers are alternately connected to the cylindrical body and the sleeve so as to radially inwardly and outwardly extend at alternate intervals, thereby forming a zig-zag shaped flow path around the sleeve.
  • Either ofthe openings in the respective closure members may serve as an inlet for liquid medium to be stirred while the other opening as an outlet.
  • the device of the above construction is particularly effective in dealing with the liquid medium that has been mixed or added with an additive prior to entering the flow stirrer.
  • this liquid medium under pressure has entered the flow stirrer of the above construction through, for example, the opening leading to the hollow of the sleeve, the liquid medium flows through the split portion into the space between the cylindrical body and the sleeve.
  • the liquid medium thus fed into the space flows towards the other opening, travelling in a substantially zig-zag manner guided by the alternately arranged barriers and finally deflected by the partition plate towards the other opening through which it is discharged.
  • the liquid medium can be severely stirred to permit particles of the added coagulant to be uniformly dispersed in the liquid medium even though the flow speed of the liquid medium passing through the stirrer is relatively low. This is possible because the liquid medium flowing in the zig-zag manner within the space between the cylindrical body and the sleeve alternately undergoes expansion and contraction, thereby creating a turbulent or eddy current each time it is expanded.
  • an additive for example. powdery coagulant
  • FIG. 1 is a longitudinal sectional view of a flow stirrer according to one preferred embodiment of the present invention
  • FIG. 2 is a cross sectional view taken along the line ll-ll in FIG. 1,
  • FIG. 3 is an exploded view of a flow mixer according to another preferred embodiment of the present invention.
  • FIG. 4 is a longitudinal section] view of the flow mixer shown in FIG. 3,
  • FIG. Si is an elevational view of a flow mixer assembly according to a further preferred embodiment of the present invention.
  • FIG. 6 is a longitudinal sectional view ofa portion of the flow mixer assembly of FIG. 5, showing the lowermost or first stage thereof.
  • a flow stirrer according to the present invention, generally indicated by 10, comprises a cylindrical hollow body 11 having both ends integrally formed with radially outwardly extending annular flanges 11a and 11b.
  • a pair of opposed closure discs 12 and 13 are respectively secured to the flanges 11a and 11b of the cylindrical body 11 by any suitable means, for example, by means of rivetting as at 140 and 14b.
  • the cylindrical body 11 accommodates therein a sleeve 15 ofa length substantially equal to the length of said cylindrical body 11 and extending between the closure discs 12 and 13 in alignment with the longitudinal axis of said cylindrical body 11, at least one end of which is welded to either of the opposed closure discs 12 or 13.
  • the sleeve 15 may have a sectional shape similar to the contour of a split ring and has a split portion or clearance 15a extending in a lengthwise direction of the sleeve 15.
  • a partition plate 16 having both ends terminating at the adjacent closure discs 12 and 13 extends between the cylindrical body 11 and the sleeve 15 in a radial direc tion with both side edges respectively secured to the cylindrical body 11 and to the sleeve 15 adjacent one of the opposed edges thereof which define the clearance 15a.
  • the closure disc 12 is formed therein an opening 12a, which is, in the instance as shown, substantially segmentally shaped.
  • the position of this opening 120 in the closure disc 12 should be selected such as to be adjacent the periphery of said disc 12 and above one side of the partition plate 16 that is remote from the clearance 150 so that liquid medium flowing from the clearance 150 or entering the opening 12a can be deflected towards the opening 12a or towards the clearance 15a, respectively, by the partition plate 16.
  • the closure disc 13 is formed with an opening 13a in alignment with the longitudinal axis of the cylindrical body 11, which opening 13a communicates to the hollow of the sleeve 15.
  • Either of the openings 12a and 13a respectively formed in the opposed closure discs 12 and 13 may serve as an inlet for the liquid medium to be stirred while the other as an outlet for the same.
  • the opening 13a is assumed as adapted to be connected to a source of the liquid me dium through a suitable pumping device while the other opening adapted to be connected to such a reservoir as a settling or thickening tank or a container which may be selected depending on the use of the flow stirrer shown in FIGS. 1 and 2.
  • These barriers 17 and 18 are positioned such as to alternately inwardly and outwardly extends in a radial direction of the cylindrical body, each of either set of the barriers 17 or 18 substantially terminating in between the adjacent couple of the barriers 18 of the other set or 17.
  • the liquid medium under pressure flows into the hollow of the sleeve 15 through the opening 13a.
  • the liquid medium in the hollow of the sleeve 15 then flows through the clearance 15a into a substantially circularly extending stirring chamber defined between the cylindrical body 11 and the sleeve 15 with the closure discs 12 and 13 mounted on both ends of said cylindrical body 11.
  • the liquid medium within the stirring chamber flows towards the other opening 120. travelling in a substantially zig-zag manner guided by the alternately arranged barriers 17 and 18, and is finally deflected by the partition plate 16 towards the opening 12a through which it is discharged.
  • the liquid medium undergoes substantial vermiculation, that is, alternate expansion and contraction, due to the fact that a substantially circular passage for the flow of the liquid medium which constitutes the stirring chamber and which extends between the clearance a and the opening 120 varies in width by the reason as hereinbefore described.
  • Alternate expansion and contraction of the liquid medium flowing within the stirring chamber results in formation of a turbulent or eddy current and, therefore, the liquid medium can be severely stirred even through the flow rate is relatively low.
  • closure discs 12 and 13 may be of a diameter substantially equal to the inner or outer diameter of the cylindrical body 11 without being provided with the flanges 11a and 11b. In this case, the closure discs may be fillet-welded to the corresponding ends of the cylindrical body.
  • FIGS. 3 and 4 Shown in FIGS. 3 and 4 is a flow mixer, rather than a flow stirrer, because it can be used for mixing an additive to a liquid medium as the latter passes therethrough.
  • This flow mixer shown in FIGS. 3 and 4 comprises a pair of stirring and mixing chambers, the stirring chamber thereof being of substantially the same construction as that shown in FIGS. 1 and 2.
  • a slight difference resides in that a cylindrical body 11 employed in this embodiment is longer than that 11 employed in the foregoing embodiment while the closure disc 12 employed in the foregoing embodiment serves as a partition disc 12' dividing the hollow of the cylindrical body 11' into the stirring chamber and the mixing chamber positioned thereabove.
  • An additional closure disc 23 is provided which is adapted to be rigidly mounted on the flange ll'a of the cylindrical body 11'. which is of the same construction as the closure disc 13 secured to the flange 11'! thereof.
  • stirring chamber is substantially the same as that in the foregoing embodiment, reference will now be made to the mixing chamber for the sake of brevity.
  • a substantially helically sloping duct 19 having a slope surface 19a is rigidly mounted on the partition disc 12'.
  • the sloping duct 19 has a flattened, closed end positioned adjacent the opening l2'a in the partition disc 12' and an open end positioned so as to cover the opening 12a, the slope surface 19a substantially upwardly convoluting about the longitudinal axis of the cylindrical body 11' from the flattened, closed end, one side edge of which slope surface 19a is rigidly secured to the inner surface of the cylindrical body 11' while the opposite side edge is equally spaced from the outer peripheral surface of a guide tube 23b downwardly extending from the closure disc 23 in alignment with the opening 23a.
  • a supply port ll'c is formed which opens into a portion of the sloping duct 19 adjacent the open end thereof.
  • a coupler rigidly secured to the cylindrical body 11' in alignment with the supply port ll'c is adapted to be connected to a source of fluid additive to be mixed with the liquid medium fed through the mixer.
  • the liquid medium fed to the opening l2'a in the partition disc 12' in the manner as hereinbefore described in connection with the embodiment of FIGS. 1 and 2 flows into the duct 19 and is then oriented towards the open end of the duct 19, since the opening 12'a locates inside the duct 19 and rearwardly of the open end of said duct 19.
  • the liquid front emerging from the open end of the duct 19 commences to e1- evate riding on the slope surface thereby forming a substantially swivelling current around and in substantially spaced relation to the tube 23b that is downwardly extending from the closure disc 23.
  • the liquid front after having reached the inner surface of the closure disc 23 turns downwards flowing towards the partition disc 12' in a direction substantially parallel to the longitudinal axis of the tube 23b and again turns backwards flowing up through the tube 23b.
  • the liquid medium flowing up through the tube 23b is thereafter discharged to the reservoir (not shown) such as a settling or thickening tank or any other suitable container.
  • the fluid additive supplied through the coupler 20 and then fed into the mixing chamber through the port llc impinges against the flow of the liquid medium travelling from the opening l2'a towards the open end of the sloping duct 19 and is uniformly mixed into the fluid medium during substantially swivelling motion of the fluid medium within the mixing chamber. It should be noted that the liquid medium flowing from the opening 12'a towards the open end of the sloping duct 19 will not flow in part'into the coupler 20 because the fluid additive is made to be fed under pressure greater than the pressure imposed on the flow of the liquid medium.
  • a number of the flow mixer of the construction shown in FIGS. 3 and 4 may be used in a vertically stacked arrangement as shown in FIG. 5.
  • the closure disc 13 is preferrably provided with a downwardly extending tube 13b in alignment with the opening 13a, thereby enabling the closure disc 13 to be used as an upper closure disc, similar to the closure disc 23, for the mixer unit positioned next to and below the upper mixer unit.
  • FIG. 5 a six-stage flow mixer assembly is shown as supported above the ground by means of a bench structure B. While a mixer unit of the lowermost stage T is constructed as hereinafter described, the other mixer units of the second to last or uppermost stages T, to T are each constructed in substantially the same as shown in FIGS. 3 and 4. These units are preferrably vertically stacked one above another by the use of annular rubber packings each firmly held between the adjacent pair of the units.
  • the unit of the lowermost stage T comprises a cylindrical hollow body 21 having both ends integrally formed with a pair of radially outwardly extending flanges 21a and 21b, as shown in FIG. 6, and the cylindrical body 21 so far described may be similar in shape to the cylindrical body 11 or 11'.
  • a bottom disc 22 formed with an opening as at 22a is rigidly mounted within the hollow of the cylindrical body 21 and provided with a drain tube 24 downwardly extending therefrom in alignment with the opening 220.
  • a lower end portion of the cylindrical body 21 below the plane of the bottom disc 22 serves as a mounting leg together with the flange 21b adapted to be secured to the bench structure B by any suitable method, for example, by the use of rivets (not shown).
  • the drain tube 24 is adapted to communicate through a valve V to any suitable location or a source of liquid medium to be processed,
  • valve V being adapted to open only when liquid medium remaining in the multi-stage mixer assembly is to be drained for any purpose, for example, of cleaning or repairment or of preventing any of the units from being damaged by freezing.
  • a cap assembly 30 Mounted above the unit of the uppermost stage T is a cap assembly 30 having an observatory window 31 and formed with an outlet coupler 32.
  • This cap assembly 30 may not be employed, in which case the outlet coupler 32 should be connected to the upper closure disc 23 in alignment with the opening 23a.
  • the outlet coupler 32 is in turn communicated to a valve V leading to the atmosphere through a line L, and also to the reservoir through a line L It should be noted that when the liquid medium remaining in the mixer assembly is to be drained through the drain tube 24, the valve V should be set to complete a circuit between the outlet coupler 32 and the line L,.
  • the cylindrical body 21 of the lowermost, mixer unit T is formed with an intake port 21c which is aligned with a coupling flange 25.
  • the coupling flange 25 is in turn connected to the source of liquid medium S through a valve V and a pumping device P so that liquid medium to be processed can be supplied into the hollow of the cylindrical body 21 under pressure.
  • the coupling flange 25 and the intake port 21c are designed such that the liquid medium fed from the source S thereof through the pumping device P flows into the cylindrical body 2] in a direction substantially parallel to the tangential direction of the cross sectional contour of the cylindrical body 2].
  • the couplers 20 of the mixer units of the second, third and fifth stages T T and T are respectively connected to sources of fluid additives, for example, 5 percent lime solution, 5 per cent aluminum sulfate solution and 0.05 percent high polymer coagulant, through valves V V and V,,- and then pumping devices P P and P,
  • the couplers 20 of the mixer units of the fourth and sixth stages T, and T are, in this instance, closed by any suitable plugs (not shown].
  • liquid medium fed into the lowermost unit through the intake port 21c under pressure flows in a substantially similar manner as in the mixing chamber of the flow mixer of FIGS. 3 and 4 and then flows up through the downwardly extending tube 13b in the closure disc 13 of the unit of the next stage T
  • the liquid front thus fed into the stirring chamber of the unit of the next stage T successively flows upwards through the other units of the subsequent stages T to T in substantially the same manner as hereinbefore described with reference to FIG. 1 and 2 and FIGS, 3 and 4 and is finally discharged to the reservoir through the outlet coupler 32.
  • a device for stirring liquid medium by the flow of the liquid medium passing therethrough under pressure which comprises a cylindrical hollow body having both ends closed by first and second plate members, respectively, a sleeve stationarily housed within said cylindrical hollow body in alignment with the longitudinal axis of said cylindrical hollow body and having both ends terminating at the first and second plate members, said sleeve further having a clearance extending in parallel to the longitudinal axis of said sleeve, said clearance communicating between the hollow of said sleeve and a space that is defined between said sleeve and said cylindrical body, a first opening formed in said first plate member adjacent the periphery of said first plate member and communicating between said space and the outside of said device, a second opening formed in said second plate member and communicating between said hollow of said sleeve and the outside of said device, a partition wall rigidly housed within said space with both ends thereof terminating at said first and sec ond plate members, one side edge of which is secured to one of the opposite edges of said clearance and the other side edge
  • said guiding means comprises two sets of alternately outwardly and inwardly extending barriers in a radial direction of said cylindrical hollow body, said barriers of one set secured to said cylindrical body and said barriers of the other set secured to said sleeve, each of said barriers of both sets having both ends substantially terminating at said first and second plate members.
  • a device as claimed in claim I wherein said first opening serves as an outlet for the liquid medium and said second opening serves as an inlet for the same,
  • a device as claimed in claim 2 further comprising a cylindrical hollow extension coaxial with said cylindrical hollow body and situated on one side of and above said first plate member remote from said second plate member, said cylindrical hollow extension having one end rigidly connected to said cylindrical hollow body, a third plate member secured to the other end of said cylindrical hollow extension and having an opening formed therein at the center thereof in alignment with the longitudinal axis of said cylindrical hollow extension, a guide tube having one end secured to said third plate member in alignment with said opening in said third plate member and the other end extending into the hollow of said cylindrical hollow extension to a position adjacent said first plate member, a supply port formed in the wall of said cylindrical hollow extension at a position adjacent said first mentioned end thereof and adapted to supply therethrough a material to be mixed with the liquid medium entering said hollow of said cylindrical hollow extension through said first opening in said first plate member, and means for orienting the flow of the liquid medium, that has entered said hollow of said cylindrical hollow extension through said first opening in said first plate member, in the circumferential direction of said cylindrical hollow extension whereby the front of said liquid medium
  • said orienting means comprises a substantially helically extending slope having one end secured to said second plate member adjacent said first opening in said first plate member and the other end situated above said first opening.
  • a device as claimed in claim 4 further comprising a guide tube having one end connected to said second plate member in alignment with said second opening in said second plate member, said guide tube together with said second plate member serving as said guide tube together with said first plate member when said device is vertically connected above another unit of said device.
  • a floculator assembly which comprises in combination:
  • a plurality of vertically stacked floculator units each of which except for the lowermost unit comprises a cylindrical hollow body having both ends closed by upper and lower plate members, said upper and lower plate members being formed with respective openings at the center thereof in alignment with the longitudinal axis of said cylindrical hollow body,
  • first and second guide tubes downwardly extending respectively from said upper and lower plate members in alignment with said openings in said plate members
  • said upper plate member adapted to serve as the lower plate member for the cylindrical hollow body of either of said lowermost floculator unit and any one of the other floculator units positioned immediately below said each of said floculator units except for the lowermost floculator unit and said lower plate member adapted to serve as the upper plate member for the cylindrical hollow body of any one of said floculator units including the lowermost floculator unit,
  • a partition plate member stationarily housed within said cylindrical hollow body for dividing the hollow of said cylindrical hollow body into stirring and mixing chambers,
  • a sleeve stationarily housed within said stirring chamber in alignment with the longitudinal axis of said cylindrical hollow body and having both ends terminating at said lower plate member and said partition plate member, the hollow of said sleeve being communicated to said second guide tube, said sleeve further having a clearance extending in parallel to the longitudinal axis of said sleeve, said clearance communicating between the hollow of said sleeve and a space that is defined between said sleeveand said cylindrical body within said stirring chamber,
  • a partition wall rigidly housed within said stirring chamber with both ends thereof terminating at said lower plate member and said partition plate member, respectively, one side edge of which is secured to one of the opposite edges of said clearance and the other side edge of which is secured to the cylindrical hollow body,
  • a supply port formed in the wall of said cylindrical hollow body and opening into said mixing chamber at a position immediately above said partition plate member, said supply port being adapted to supply therethrough a material to be mixed with the liquid medium entering said mixing chamber through said through hole in said partition plate member, and
  • the opening in the upper plate member of the cylindrical hollow body for the uppermost floculator unit being adapted to be connected to a suitable reservoir where said liquid maxims is disposed
  • the lowermost floculator unit comprising a cylindrical hollow receptacle having a lower end closed by a closure plate and an upper end adapted to be closed by the lower plate member for the cylindrical body of the floculator unit positioned immediately thereabove with the guide tube extending into the hollow of said cylindrical receptacle and substantially terminating adjacent said closure plate and an inlet port communicating between a source of the liquid medium to be disposed and the hollow of said cylindrical receptacle through a suitable pumping means, drain means communicating between the hollow of said cylindrical hollow receptacle and a suitable location for discharging a portion of the liquid medium remaining within said floculator assembly, and means for connecting the floculator units in a substantially vertically stacked arrangement.
  • said guiding means comprises two sets of alternately outwardly and inwardly extending barriers in a radial di-

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
US47957174 1974-01-11 1974-06-14 Flow mixer Expired - Lifetime US3875060A (en)

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Cited By (7)

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US4073622A (en) * 1974-03-25 1978-02-14 Libero Luppi Blood oxygenator with heat exchanger
EP0046313A1 (de) * 1980-08-20 1982-02-24 Multireaktor B.V. Vorrichtung und Verfahren für die Abwasserreinigung
US4572786A (en) * 1983-08-11 1986-02-25 Yks Co., Ltd. Oily water separating apparatus for the ship
EP0914861A2 (de) * 1997-08-05 1999-05-12 Owens-Corning Composites S.P.R.L. Vorrichtdung zum kontinuierlichen Herstellen einer Mischung zum Schlichten von Glasfasern
US20040130967A1 (en) * 2002-10-17 2004-07-08 Christian Wolf Mixing element
CN103406037A (zh) * 2013-08-28 2013-11-27 天津市华水自来水建设有限公司 一种静态导流型支管加药式管道加药混合器
WO2023049114A1 (en) * 2021-09-22 2023-03-30 Ica Trinova, Llc Coaxial tubular fluid treatment device and system

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DE19927556C2 (de) * 1999-06-16 2003-05-08 Inst Mikrotechnik Mainz Gmbh Statischer Mikromischer und Verfahren zum statischen Mischen zweier oder mehrerer Edukte

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US2532973A (en) * 1942-04-09 1950-12-05 Wallentin Ake Henning Apparatus for proportioning metaphosphate to a liquid
US3002922A (en) * 1959-01-29 1961-10-03 Raymond F Baddour Apparatus and methods for continuous ion exchange
US3185447A (en) * 1963-03-25 1965-05-25 Hach Chemical Co Analyzer mixing apparatus
US3417967A (en) * 1966-07-20 1968-12-24 Bristol Aeroplane Plastics Ltd Fluid mixing devices
US3697230A (en) * 1969-04-21 1972-10-10 Asahi Chemical Ind Apparatus for polymerizing liquids to polymers

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073622A (en) * 1974-03-25 1978-02-14 Libero Luppi Blood oxygenator with heat exchanger
EP0046313A1 (de) * 1980-08-20 1982-02-24 Multireaktor B.V. Vorrichtung und Verfahren für die Abwasserreinigung
WO1982000633A1 (en) * 1980-08-20 1982-03-04 B Eertink Device and method for cleaning waste water
US4572786A (en) * 1983-08-11 1986-02-25 Yks Co., Ltd. Oily water separating apparatus for the ship
EP0914861A2 (de) * 1997-08-05 1999-05-12 Owens-Corning Composites S.P.R.L. Vorrichtdung zum kontinuierlichen Herstellen einer Mischung zum Schlichten von Glasfasern
EP0914861A3 (de) * 1997-08-05 1999-05-26 Owens-Corning Composites S.P.R.L. Vorrichtdung zum kontinuierlichen Herstellen einer Mischung zum Schlichten von Glasfasern
US6405759B1 (en) 1997-08-05 2002-06-18 Owens Corning Composites Sprl Apparatus for the continuous preparation of glass fiber sizing compositions
US20020117218A1 (en) * 1997-08-05 2002-08-29 Isabelle Boeye Apparatus for the continuous preparation of glass fiber sizing compositions
EP1256557A1 (de) * 1997-08-05 2002-11-13 Owens Corning Composites S.P.R.L. Vorrichtung zum kontinuierlichen Herstellen und Aufbringen von Glasfaser-Schlichtezusammensetzungen
US20040130967A1 (en) * 2002-10-17 2004-07-08 Christian Wolf Mixing element
CN103406037A (zh) * 2013-08-28 2013-11-27 天津市华水自来水建设有限公司 一种静态导流型支管加药式管道加药混合器
WO2023049114A1 (en) * 2021-09-22 2023-03-30 Ica Trinova, Llc Coaxial tubular fluid treatment device and system

Also Published As

Publication number Publication date
DE2438044A1 (de) 1975-07-17
GB1415619A (en) 1975-11-26
CA999849A (en) 1976-11-16
JPS50101956A (de) 1975-08-12

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