CA1120409A - Vertical flow inclined plate clarifier - Google Patents
Vertical flow inclined plate clarifierInfo
- Publication number
- CA1120409A CA1120409A CA000313598A CA313598A CA1120409A CA 1120409 A CA1120409 A CA 1120409A CA 000313598 A CA000313598 A CA 000313598A CA 313598 A CA313598 A CA 313598A CA 1120409 A CA1120409 A CA 1120409A
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- clarifier
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Abstract
Abstract of the Disclosure An inclined plate clarifier, adapted for generally vertical flow of liquid to be clarified through inclined flow passages formed by parallel spaced apart plates, includes flow regulating channel means arranged at either or both inclined ends of the flow passages to assist in regulating liquid flow in the passages. Influent for the clarifier is preferably introduced through a separate influent chamber which is in communication with a sediment collection chamber to permit settled solids at the bottom of the influent chamber to pass directly into the sediment collection chamber, inclined plates also being arranged within the influent chamber to facilitate flow distribution and the settling of solids therein. Slave plates are also disclosed for insertion between relatively fixed clarifier plates in order to provide an increased number of narrower inclined flow passages.
Description
Back~round of the Xnvention The present invention relates to clarifiers of a type wherein inclined flow passages are ~ormed by a plurality of parallel, spaced apart plates and rnore particularly to such clarifiers wherein liquid ~o be clarified flows generally - vertically through the inclined flow passac~es.
Various types of clariiers have been developed for use in place of large settling basins, tanks or the like where liquid is held over prolon~ed periods of time until clarifica-tion occurs because of normal sedimentation and phase separation phenomena. Inclined plate clarifiers have beerl found to be particularly efective in such applications, particularly in industrial and municipal water treatment ~acilities, because of increasingly rigid requirements for high effluent quality.
L5 Inclined plate clarifiers are commonly characterized by a n~er of inclined flow passages for~ed by parallel, spaced apart plates. The concept of employing a series of inclined passages in close proximlty to each other has been found to be particularly effective since the settling area '0 per unit volume is greatly incre2sed while, at the same time, the overall size and cost for the cla~ifier or settling unit may be reduced~
Within an inclined plate clarifier, liquid to be clarified flows along the flow passages between the plates !5 and is sub~ect ~o phase separation or the se~tling of solids under conventi~nal principles of operation~ Inclined plate clarifiers may generally be divided into classes adapted respectively for generally vertical flow or for cross-flow
Various types of clariiers have been developed for use in place of large settling basins, tanks or the like where liquid is held over prolon~ed periods of time until clarifica-tion occurs because of normal sedimentation and phase separation phenomena. Inclined plate clarifiers have beerl found to be particularly efective in such applications, particularly in industrial and municipal water treatment ~acilities, because of increasingly rigid requirements for high effluent quality.
L5 Inclined plate clarifiers are commonly characterized by a n~er of inclined flow passages for~ed by parallel, spaced apart plates. The concept of employing a series of inclined passages in close proximlty to each other has been found to be particularly effective since the settling area '0 per unit volume is greatly incre2sed while, at the same time, the overall size and cost for the cla~ifier or settling unit may be reduced~
Within an inclined plate clarifier, liquid to be clarified flows along the flow passages between the plates !5 and is sub~ect ~o phase separation or the se~tling of solids under conventi~nal principles of operation~ Inclined plate clarifiers may generally be divided into classes adapted respectively for generally vertical flow or for cross-flow
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where liquid to b~ clari~ied flow~ generally horizontally through the flow passa~es. Vertical flow clari~iexs m~y be adapted fox operation eith~x in an "upflo~" and/or "down-' flow" mode of operation with relatively heavy and/or light phase material being removed as the liquid flows along'the inclined passa~es.
The~present invention particularly contemplates a vertical flow clarifier in which liquid to be clarified ~lows generally vertically through the inclined flow passages formed lD by the spaced apart plates. Thus, inl'et and outlet means for the clarifier are in communication with the ~low passages generally adjacent their inclined ends.
It is often a particular prob]em to uniformly distri~
bute influent liquid across each of the flow passages in vertical flow clarifiers. Without such unionn distribution, excessive settling may tend to occur within pOXtiOllS of the flow passages ana may even result in settled so~ids tending to block or plug - the flow passages. A related problem involves solids which initially settle while the liquid is being introduced into the flow passages. Buildup of-these initially settled solids may also tend to cause undesirable blockage. Accordingly, it is particularly important to assure that any such initially settled solids may pass into a suitable sediment chamber and are not allowed to remain in the flow passayes.
It is also particularly desirable to adapt such clari-fiers for operation under widely varying conditions. For example, in some applications, liquids to be clarified may have varying amounts of suspPnded solids ranging from hea~y material tending to settie out very rapidly to lic3h~ material which is dificult to separate and may in some instances require the use of floc-culating agents. Liguids to be clarified may also require ~he removal of a relat:ively low density phase such as Dils suspended S in water. The liquid may al50 be either aqueous or non~aqueous and, in some instances, may include both solids subject to settling under the effects of gravity as well as one or more low density phases which must be separated in order to produce a clarified liquid of satisfactory quality.
~10 In summary, various clarifiers in the pri~r art have demonstrated an ability to operate satisfActorily in selected applisations. However, a need has been found to remain for a vertical flow clarifier which is adaptable to a variety of operating conditions and which may be employed to produce a high 1~ qu~lity effluent.
Summary of the Invention Accordingly, it is an object of the present invention to provide a vertical flow inclined plate clarifier adapted to overcome one or more problems of the type discussed above.
~0 More specifically, it is an object of the invention to provide a vertical flow clarifier including flow regulating channel means for effectively regulating liquid communication at the inclined ends of the flow passages. In particular, such a flow regulating channe] means is contemplated for intro-'5 d~cing liquid tc be clarified adjacent one end of each inclined flow passage and to unifonmly distribute the ~iquid throughout the respective passage.
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where liquid to b~ clari~ied flow~ generally horizontally through the flow passa~es. Vertical flow clari~iexs m~y be adapted fox operation eith~x in an "upflo~" and/or "down-' flow" mode of operation with relatively heavy and/or light phase material being removed as the liquid flows along'the inclined passa~es.
The~present invention particularly contemplates a vertical flow clarifier in which liquid to be clarified ~lows generally vertically through the inclined flow passages formed lD by the spaced apart plates. Thus, inl'et and outlet means for the clarifier are in communication with the ~low passages generally adjacent their inclined ends.
It is often a particular prob]em to uniformly distri~
bute influent liquid across each of the flow passages in vertical flow clarifiers. Without such unionn distribution, excessive settling may tend to occur within pOXtiOllS of the flow passages ana may even result in settled so~ids tending to block or plug - the flow passages. A related problem involves solids which initially settle while the liquid is being introduced into the flow passages. Buildup of-these initially settled solids may also tend to cause undesirable blockage. Accordingly, it is particularly important to assure that any such initially settled solids may pass into a suitable sediment chamber and are not allowed to remain in the flow passayes.
It is also particularly desirable to adapt such clari-fiers for operation under widely varying conditions. For example, in some applications, liquids to be clarified may have varying amounts of suspPnded solids ranging from hea~y material tending to settie out very rapidly to lic3h~ material which is dificult to separate and may in some instances require the use of floc-culating agents. Liguids to be clarified may also require ~he removal of a relat:ively low density phase such as Dils suspended S in water. The liquid may al50 be either aqueous or non~aqueous and, in some instances, may include both solids subject to settling under the effects of gravity as well as one or more low density phases which must be separated in order to produce a clarified liquid of satisfactory quality.
~10 In summary, various clarifiers in the pri~r art have demonstrated an ability to operate satisfActorily in selected applisations. However, a need has been found to remain for a vertical flow clarifier which is adaptable to a variety of operating conditions and which may be employed to produce a high 1~ qu~lity effluent.
Summary of the Invention Accordingly, it is an object of the present invention to provide a vertical flow inclined plate clarifier adapted to overcome one or more problems of the type discussed above.
~0 More specifically, it is an object of the invention to provide a vertical flow clarifier including flow regulating channel means for effectively regulating liquid communication at the inclined ends of the flow passages. In particular, such a flow regulating channe] means is contemplated for intro-'5 d~cing liquid tc be clarified adjacent one end of each inclined flow passage and to unifonmly distribute the ~iquid throughout the respective passage.
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At thc same tirne, it is a related object of the invention to provide similar flow regulating channel means eff~ctive to direct separated phase matexial toward an appro~
priate portion of the clarifier. For example, with relatively heavy suspended solids being removed from a liquid passing upwardly through the flow passages, the fLow regulatiny channel means arranged adjacent the lower ends of the inclined flow passages uniformly distribute liquid to be clarified throughout the flow passages for travel in an upward dixection while assurin~ that initially settled solids pass directly to a suitable sediment cha~ber.
It is even further contemplated that the flow regu-lating channel means are provided at either the lower or upper ends of the inclined flow passages depending upon whether the lS clari~ier is contemplated for upflow or downflo~ operation.
In addition, similar flow regulating channel means may be employed at both inclined ends of the flow passages under certain condi~ions which will be made more apparent in the following description.
It is also an object of thP invention to provide a separate influent chamber within an inclined plate clarifier, the influent chamber being in communication with a suitable sediment chamber so that solids settling within the influent chamber may directly pass into the sediment chamber without ~5 fouling or overloading passages communicat;ing the influent chamber wi~h ~he f1QW PaSSage5.
It is yet another related object of the inventiorl to provide a separate influent chamber which is formed ~ith inclined spaced apart plates to facilitate initial settling of solids within the influen-t chamber. Solids which settle within the influent chamber may -then pass directly to the sediment collection chamber as noted above.
It is yet another object oE the invention to provide a vertical flow clarifier wherein inclined flow passages are formed by parallel, spaced apart clarifier plates, -the clarifier further being adapted for the selected installation of inclined slave plates between relatively fixed clarifier plates in order to provide an increased number of flow channels having an effectively reduced width or settling dimension.
An even further object of the invention is to provide a unique interface arrangement at the upper ends of the inclined flow passages for an upflow clarifier, the interface comprising a plurality of interface plates having surfaces which incline upwardly and toward each other -to form restric-ted passages for regulating the flow of liquid toward the upper ends of the flow passages, the inclined surfaces tending to facilitate the upward passage of relatively low densi-ty material so that it may properly escape from the clarifier.
Generally, therefore, the present invention is described as an improvement in a clarifier having inclined flow passages formed by a plurality oE spaced apart and inclined parallel plates mounted within a housingt the clarifier being adapted for upflow operation with the housing forming a sediment chamber below the inclined plates and collection means at the upper end of the plates for receiving effluent. The improvement comprises a separate influent chamber formed by -the housing, a portion of the housing forming openings adjacent the lower ends of the inclined plates and a plurality of flow regulating channel assernblies for regulating -the flow of influent into the lower inclined ends of the respective flow ws/., ~L~LZ~
passac3es. The openings formed by -the housing are in respective comrnunication wi-th -the flow regulatincJ channel assemblies.
The flow regula-tiny channel assemblies :include flow restricting passage means for distributing inEluent Erom the influent ehamber uniformly across the respective flow passages. Flow regulating passacJe means are provided for providing limited communication from a lower por-tion of the influent chamber into the sediment chamber and are selected to permit settled solids at the bottom of the influent ehamber to pass direetly into the sediment ehamber while inEluent tends to flow through the openings into the inelined flow passages.
Additional objeets and advantages of the present invention are made apparent in the following description having reference to the accompanying drawings.
Brief Deseription oE the Drawings FIGURE 1 is an end view, with parts in section, of an inelined plate clarifier eonstructed in accordance with the present invention.
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FIGURE 2 is a view takcn aloncJ section line II-II of FIGURE 1.
FIGURE 3 is an enlarged fragmentary view of a portion of the clarifier of FIGURE 2 to more clearly illus-trate the flow regulating channel assembly construction at the inclined ends of the flow passages within the clarifier.
FIGURE 4 is an end view, with parts in section, of another embodiment of an inclined plate clarifier constructed in accordance with the present invention.
FIGURE 5 is a plan view of the inclined plate clarifier of FIGURE 4.
FIGURE 6 is a view taken along section line VI-VI
of FIGURE 4.
FIGURE 7, located on the drawing containiny FIGURE 1, is an end view, with par-ts in sectiont of another ernbodiment of an inclined plate clarieier constructed in accordance with the present invention.
FIGURE 8, located on the drawing containing FIGURE 4, is a view of the inclined plate calrifier taken along section line VIII-VIII of FIGURE 7.
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FIGURE 9, located on the drawing containing FIGURE 4, is also an end view/ with parts in section, of still another embodiment of an inclined plate clarifier constructed in accordance with the present invention.
FIGURE 10, loca-ted on the drawing containing E'IGURE 4, is a centrally sectioned side view oE an inclined plate clarifier generally similar to the clarifier of FIGURE 4 while illustrating three different variations of slave plates selectively inserted between the standard parallel, spaced apart clarifier plates in order to adjust the number and size of flow passages within the clarifier.
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Descript~on of the Preferred ~odiTnents __ As was indic2ted abovP, the present invention relates t~ a clarifier of the type represented ~y ~he various embodi-ments in ~IGURES 1-10, each including a number of inclined flow passages formed by parallel~ spaced apart plates and charactexized by features particularly con~emplated ~o adapt the clarifier or use under various conditions while enhancin~
the rate and~or quality of clarification.
The present clarifier is particulary adapted for vertical flow operatîon. As will ~e made more apparent in the following description, certain o the clarifiers described ,below may be operated in either or both an upflow and downflow mode of operation. In this connection; the term "upflow"
indicates that the major direction o~ flow of liquid to be ~5 clarified within the clarifier takes place in an upward direc-tion at least through the inclined flow passages formed by the parall~l spaced apart plates. Similarly, ~he term "down-flow" indicates ~hat the major direction of flow for li~uid to be clarified ~akes place in a downward direction at least through the inclined flow passages.
The various novel features of the clarifier of the present invention are each illustrated in one or more of FIGURES 1-10. These novel features are summarized immediately below prior ~o a more detailed description o~ the drawings~
~5 The clarifier of FIGURES 1 and 2 includes a novel flow regulating channel assembly for regulating flow in each of a pluraltiy of inclinea flow passages~ Such a flow regu-,~ lating channel means may be employed to dis~ribute effluent .
into each of the inclined ~low passages at either the lower or upper ends of the passayes dependiny upon whether the clarifier is contPmplated for upflow or downflow operation .
respecti~ely.
Within the embodiment of FIGURES 1 and 2, flow regu~
lating channel means are emp]oyed at hoth the lower and upper ends of each inclined flow passage. With the clarifier being adaptedfor operation in an upflow mode, the flow regulating channel means at the lower ends of the flow passages serve to in~roduce influen~ to the flow passages while the flow regulating channel means at the upper ends of the inclined flow passages serve to remove clarified effluen~ from the flow passages and direct it toward a suitable ou~tle~
It will be apparent from the detailed description ~15 of the embodiment of FIGURES 1 and 2, as set forth below, that the clarifier may also be operated in a downflow mode with the flow regulatin~ channel means at the upper ends of the flow passages serving to distribute influent throughout the flow passages with or without similar flow regulating channel means at the lower ends of the flow passages serving to remove clar-ifier effluent. The flow regulating channel means at the ends of the inclined flow passages are illustrated in greater detail within FIGURE 3.
The clarifier of FIGURE 1 also includes a separate region which serves an an influPnt cha~er with the clarifier being operated in an upflow modeO The influent chamber is particularly contemplated for use where liquid to be clarified contains solids which tend ~o settle out rapidly. As may be _g _ best secn in FIGU~E 1, the bottom of the influ~it chamber is in communication Wit21 a sediment chamber in a lower poxtion of the clarifiex.
Communication between the in1uent ch~ber and the sediment chamber is limited so that liquid from the influent chamber tends to flow into ~3e inclined flow pass~ges with only settled s~lids ~ending to pass in~o the sediment ~hamber.
A modification of the influent chamber is illustrated in FIGURE 4 with an in~erted V-shaped plate regulating communi-cation hetween the influent chamber and the sedimen~ co:Llection chamber. The legs ~f the V-shaped plate extend downwardly into the sediment collection chamber substantially below the lower ends of the inclined plates in order to reduce the like:Lihood of settled solids being carried upwardly into the inclined L5 flow passages between the plates.
The clarifier of FI~URES 4-6 also illustrates the use of additional spaced apart parallel plates within the in-fluent chamber in order to improve flow distribution and to increase the initial settling of solids therein prior to !0 passage of the influent into the inclined ~low passages between the clarifier plates. In this manner, a substantial portion of suspended solids may pass directly into the sediment chamber and thus reduce the likelihbod of the flow passages becoming plugged or impeded.
'5 The clarifier of FIGURES 4-6 also includes an inter-face arrangement of V-shaped troughs above the upper ends of the inclined plates in order to better regulate flow within the clarifier, particularly when it is being operated in an upflow mode.
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g The clari~ier of ~GU~S 7 and 8 i5 modified to the extent that a singlc assembly of inclined clarifier plates is employed with a similar influent chal~er being formed along one side wall of the clarifier housing. Otherwise, the influent chamber is similarly in direct communication with a sèdiment collection chamber, flow regulatin~ channel means being employed to distribute liquid from the influent chamber throughout the lower ends of the inclined flow passages. Similar flow regu-lating channel means are also employed at the upper ends of the inclined flow passages to recei~e effluent.
FIGURE g illustrates yet another embodiment of a clar-ifier which is similar to that o~ FIG~RES 7 and 8 except that flow regulating channel means are not employed at the upper ends of the inclined flow passages. Rather, the upper ends of the flow passages are open with effluent being received in a separation chamber ormed above the inclined clarifier plates.
As was indicated above, the clarifier of FIGURE 10 is generally similar ~o the clarifier of FIGURES 4-6. The clarifier of FIGURE 10 illustrates three different variations of slave plates which may be selectively inserted between the fixed inclined cIarifier plates in ~rder to adjust the number and size of inclined flow passages within the clarifier de-pending upon the particular operating conditions being encountered, A more de~ailed description of the various embodiments illustrated in FIÇURES 1-10 is set ~orth belowO
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~20~ 3 Th~ Embodiment of FIGURE5 1-3 .
Referring now to the drawings and particularly to FIGURES 1 and 2 a ver~ical flow inclined plate clarifier of ~he type contemplated by the present invention is gener-ally indicated at 10. The clarifier 10 includes a housing 1~
having a separation section 14 of trapezoidal shape in cross-sec~ion wherPin a plurality of inclined flvw passages 16 are ~' formed ~y clarifier plates 18 mounted in parallel spaced apart relation wi'thin the housing. An upper section 20 of the ~0 clarifier housing includes outlet means through which clarifier effluent and relatively low density material may exit the clarifier.
Referring particularly to FIG~RE 1, the clarifier ~ housing also fonms a centrally arranged influent chamber 22 L5 through which influent is introduced into the clarifier, par-ticularly when the clarifier 10 is operated in an upflow mode.
The bottom of the'influ~nt chamber 22 is open so that settled solids may pass directly out of the influent chamber. The bottom of the influent cha~ber is partial~y olosed by an in-: 20 verted V-shaped flow limiting plate 24 which allows settled solids to pass from the bottom of the~influent chamber 2~ while liquid from the influent chamber'22 tends to be directed into the lower ends of the inclined flow passages 16 through openings 26 formed by side walls 28 and 30 of the housing.
~5 The clarifier 10 also includes flow regulating channel means 32 at the lower end of each of the inclined flow passages 16 for receiving influent from the openings 26 and uniformly distributing the influent throughout the respecti~e flow passages. In addition, the flow regulating channel means ~2 serve to communicate any solids settled ~herein directly to a sediment chamber in a lower por~ion of the clarifier ~ls described in greater detail below.
Similar flow regulating channel means 34 are also provided at ~he upper ends of the inclined flow passages 16 for two reasons within the emhodiment of FIGURES 1 and 2.
Initially, with the clarifier operating in an upflow mode,-the flow regulating channel means 34 serve to collect clari-- fied effluent and direct it to a central co]lectlon reservoir L0 36 which is in communication with an effluent conduit 3~. Low densi~y material such as oil or the like may rise into separa-tion chambers 40 and ~2 formed on opposite sides of the reservoir 36 within the upper housing section 20. Low density material from the separation chamb~rs 40 and 42 may pass over a weir 44 and out of the clarifier through a conduit 46. The height of the weir 44 must be maintained in carefully selected relation to the effluent conduit 38 to assure proper operation of the clarifier. The construction and operation of thPse portions of the clarifier are described in greater detail below.
The clarifier housing 12 also includes a tapered portion 48 forming a sediment chamber 50 bene~th the inclined clarifer plates 18 and the influent chamber 22. The tapered housing portion 48 may be formed as an integral portion of the entire clariier housing 12 or as a separate structure which may be ~5 combined with the rest of the clarifier 10 during installation.
The sediment chamber may also be formed by a floor or supporting structure upon which the clarifier 10 is mounted. In any event, the sediment chamber 50 is equipped with means (nct shown~ for ~13-S~
periodically or con~inuously ~moving sediment which collects.in the char~er 50 during operatioll o the clarifier.
.Referring also to FIGV~ 3, each of the ~low reyulating channel means 32 at the lower ends of the inclined flow passages . 16 is ~ormed basically by an elong~ted plate 52 which is spaced apart from the lower surface of an adjacent clarifier plate 18 to form an enclosed region S4 extendilly across the-leng~h of each of the inclined flow passages 16. An upper eclge 56 of each of the el~n~ated plates 52 is bent inwardly toward the adjacent D inclined clarifier plate 18 in order to form a flow restriction ~or liquid passing out of the enclosed region 540 Simi.larly, a lip 58 extends downwardly ~rom the respecti~e inclined clari-fier plate 18 to form another flow restriction for limiting liquid flow downwardly from the enclosed region 54. In this manner, liquid entering ~ach of the enclosed regions 54 through one of the openi~gs 26 tends to be distributed along the length ; of the enclosed region for even pas.sage into the respective in-clined flow passages.
The relative flow restrictions formed by the upper edge 56 and the lip 58 are sized so that flow caused within the clari-fier by a hydrostatic or hydrodynamic head tends ~o pass upwardly from the en~losed region 54 through the respective inclined flow passages 16 rather than downwardly toward the sediment c:hambex 50. . The opening formed between the lip 58 and the elongated plate 52 allows solids which settle wi~hin the enclosed region 54 to pass directly into the sediment colleckion chamber 50.
Thus, the flow regulating channel means 32 serve to distribute influen~ uniformly throughout ~he inclined flow passages 16 while allowing any initially settled solids to pass directly O into the sediment collection chamber 50 V~
The flow regulating channel means 34 arranged at the . upper ends of the inclined flow passayes 16 are o~ similar . construction except that the cornporlents o~ the flow regulating channel means 3~ are rotated 180 re].ative to the co~nponents of the flow xegula~ing channel means 32. Accordingly, each of the upper flow regulating channel means 34 is similarly foxmed from an elongated plate indicated at 62 to define an enclosed region 64 and having a similar bent lower edge 66 with a lip 6~ extending upwardly from the upper surface of the adjacent inclined clarifier plate 18.
Referring particularly to FIGURE 1, it ma~ be seen that the two side walls 28 and 30 for ~e influent chamber 22 extend upwardly through the upper housing portion 20 to form the effluent reservoir 36. The influerlt chamber 22 and the effluent reservoir 36 are separated by a plate 70. Above the plate 70, the side walls 28 and 30 form openings 72 which communicate the respective enclosed regions 64 with the effluent reservoir 36.
As will be more apparent from the following operational descrip-tion for the clarifier 10, clarified effluent tends to be col-2~ lected within the reservoir 36 while low density material is collected within the separation chambers 40 and 42. A baffle 74 ext~nds along the length of the effluent reservoir 36 ln order to assist in maintaining more uniform flow through the openings 72.
~S In operation of the clarifier 10 in an upflow mode, liquid to be clarified is introduced into the influent chamher 22 through an inlet conduit 76. The influent tends to flow downwardly through the chamber 22~ So~ids which set~le rom . .
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the influent within the inlet char~er 22 pass dixectly into the scdiment chamber 50 past the V-shaped plate 24. It may he seen in FI~UR~ l that the inclined clarifier plates 18 are supported by side beams 78 and 80 as well as spaced apart centel- beams 82 and 84 which are arranged adjacent the inverted ~-shaped plate 24. The downwardly depending legs of the V-shaped plate 24 may be adjusted to v~ry theopenings fo~ned with the respective beams . 82 and 84 depending upon the amount of solids tending to settle within ~he in1uent chamber 22. Prefexably, the openings at the .0 bott~m of the influent chamber permit any settled ~olids to pass directly in~o the se~iment collection chamber 50 while the in-fluent liquid flows pxedominantly through the openings 26.
The influent flowing through the openings 26 enters the respective enclosed regions 54 and passes upwardl.y through .5 the respective inclined flow passages 16 as described above.
Any additional solids which tend to settle out within the enclosed region 54 pass downwardly and airectly enter the sediment chamber 50. Thus, a substantial portion of solids within the influent may be communicated into the sediment cham-!0 ber 50 even before the influent enters the respective inclined flow passages 16. This serves to redu~ce the amoun~ of settling required within the flow passages and produces a better quality effluent while also tending to prevent the possibility of solids becoming plugged within any portion of the inclined ~low passages.
!S ~s liquid from the enclosed regions 54 of the flow xegulating channel means 32 passes upwardly throush the respec-tive inclined flow passages 16, solids tend to settle out on the upper inclined surfacPs of th~ plates 18 and to slide down-wardly toward the sediment chamber S0 under the influence of :lO gravity~
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At the same time, ~Iny rel.ati.vely low density material such as oil, tends to collect upon a lower inclined sur~ace of - each of the clarifiex plates 18. ~his low density material tend~ to pass upwardly out of the open upper ends of the in-S clined flow passages 16 into th~ separation chambers 40 ~nd 42, The low density material from the separation chambers may then pass over the weir 44 and out of the clari.fier through the . . conduit 46.
: At the same time, clarified effluent approaching the D upper ends of the respective inclined flow passages 16 tends to enter the enclosea regions 64 of the respective flow regu-lating channel means 34 and to pass through the openings 72 into the effluent reservoir 36. T.he effluent may of course . exit the reservoir 36 through the outlet conduit 38, Any low ~D density material tending to separate from the efflùent within the upper enclosed region 64 may pass upwardly through the restricted openings formed between the plates 62 and the l.ips ; 68. Thus, the upper flow regulating channel means 3~.serve to collect clarified effluent and direct it to the reservoir ) 35. At the same ~ime, the restricted openings along the upp~r edges of their enclosed regions 64 per~it any separated low density materials therein to p~ss into the separation chambers : 40 and 42. In addition, these openings serve to prevent th~
. upper flow regulating channel means 34 from becoming air-locked.
i Before pxooeeding to a description of the other mbodi-ments, it is also noted that the clarifier 10 of FIGURES 1-3 may be operated in re~erse with liquid.to be ~larified entering :, ' .-17-through the conduit 3~ and b~ing directed through the opc!nings 72 into the flow regula~ing channel meanS 34. In tnis event, the 10w regulating chanllel means 3~ serve a similar function as described above for the flow regulating channel means 32 in that they uniformly distribute the infl~ent throughout the respective inclined flow passages 16. Thereafter, the influent liguid passes downwardly through the passages 16 with the solids again entering the sediment collection chamber 50.
Clarifiea effluent is collected by the Llow regulating channel .
.0 means 32 and directed through the openings 26 and chamber 22 for exi.t from the clarifier through the conduit 76. ~ow density material such as oil would again tend to be collected within the separation chambers 40 and 42 for removal from the clarifer in the same manner described ah~ve.
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.5 Tne Embodiment of FIGURES 4-6 . Anothex emobidment of a clarifier according to the present in~ention is indicated a~ 110 in FIGURES 4-6.. Many components of the clarifier 110 are similar to those described above for the clarifier 10 of FIGURES 1 and 2. Accordingly, 0 similar components in the clarifier 1~0 are identified by the same numerical labels as for the clarifier 10 while being ~; preceded by the numeral !'1". Accordingly, the housin~ 112 for the clarifier 110 is similar to the housing 12 for the clarifier 10. A number of modifications ancl additional features are included within the clarifier 110.
Initially, the influent chamber 122 is open at the top since the clarifier 110 does not include an effluent ~18 reservoir similar to that indicated at 36 in FIGURE. 1.
Similarly, th~re are no flow regula~irlg channel means at the upper ends of the flow passages such as those indicated at 34 in FIGURE 1. ~ather, effluent from the clarifier 110 collects within .the separation chambers 140 and 1~2. Effluent in the separation chambers 140 and 1~2 passes over the weir 144 and exits the clarifier through the-effluent outlet con-duit 146.
An ad~itional feature is provided wi~lin the influent L0 chamber 122 for faciIitating rapid separation of solids. As - may be best seen in FIGURE 6, a plurality of relatively widely spaced inclined plates 186 are arranged within the influent chambex 122 and.act in generally conventional fashion to promote flow distribution and the separation of solids within L5 the influent chamber. Thus, a greater percentage of solids is removed within the influent chamber so that a higher quality effluent may be produced within the inclined flow passages 116.
Referring particularly to FIGURE 4, the inverted eo V-shaped plate l24 which limits communication from the in-fluent chamber 122 into the sediment ~ollection chamber 15Q
extends substantially downwardly into the sediment collec-tion chamber~ Solids sliding down the upper surfaces of the plate 124 ~re thus carried lower in~o the sediment collection . e5 chamber 150 before falling freely from the edges of the in-clined V-shaped plate. Thus, there is less likelihood of the solids being carried upwardly into ~he inclined flow passages 116.
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Influent from the ch~mber 122 passes throu~h ~he openings 126 and is di.stributed throughout the inclined flow passayes 116 by ~he ~low reyulating channel means 132 which .
operate in the same manner as described above for the flow regu-lating channel means 32 of FIGURES 1 and 2. Vnifo~m flow within the flow passages 116is urther promoted by an interfacP assembly 1~0 comprisiny a plurality of V-shaped troughs 192. Each trough is formed with a pair of inclined surfaces 194 and 1~6~ The V-shaped troughs 192 are spaced apart in order to form openings 198 which extend trans~ersely throughout the clarifier relative to th~ inclined flow passages 116. The inclined surfaces o~ the troughs 192 prevent the inter~ace assembly from trapping any material while the openings 198 reyulate.the flow of effluent from the inclined flow passayes 116 into the chambers 140 and :15 142. Thus, the interface assem~ly serves to promote more uniform :~ flow of liquid upwardly through the inclined flow passages 116 Otherwise, the clarifier of FIGURES 4-6 operates i.n generally the same manner as was describPd above for the clari-fier 10 of FIGURES 1-3~
~:.20 The Embodiment of FIGURES 7 and 8 ~ ' : Yet another clarifier constructed in accordance with .
the present invention is indicated at 210 in FIGURES 7 and 8.
The clarifier 210 includes generally the same features and operates in essentially the same manner as the clariier 10 of FI~VRES 1-3. However, the clarifier 210 includes only a single array of inclined clarifier plates with an influent chamber being f~rmed along one lateral side of the clarifier housing.
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Referring particularly to ~IGV~ 7, the clarifier 21~ i.ncludes a housi.ng 212 fonning a separation section 214.
Inclined flow passages 216 ar~ ~ormed by parallel, spaced apart clarifier plates 218.
S An upper housing sec~ion 220 forms separate means for receiving effluent and low density material from the clarifier. An influent chamber 222 is formed along one lateral side of the clarifier housing 212 with a side wall 2~8 for the influent chamber forming openings 226 for conmlunicating influ-L0 ent from the chamber 22~ into the flow reyula~ing channel means 232 corresponding ~o those indicated at 32 in FIGURES
1 and 2.
An adjustable plate 224 is moun~ed a~. the open lower end of the influent chamber 222 in order to regulate the pas~
sage of settled solids from the influent cham~er 222 into the sediment chamber 250 in the same manner described above for the flow limiting plate 24 of FIGURES 1 and 2.
The flow regulatiny channel means 232 serve substan- .
tially the same purpose as the flow regulating channel means 32 of FIGURES 1 and 2. Normal separation takes place as liquid flows upwardly through the inclined flow passages 216. Flow regulating channel means 234 are arranged at the upper ends of the inclined flow passages 216 and conform wi~h the flow regula-ting channel means 34 of FIGU~ES 1 and 2. Clarifier effluen~
received by the flow regulating channel means 234 is communicated through openings 272 into an effluent reservoir 236 from which it exits the clarifier through an outlet conduit 238. ~low from the upper flow regulating channel means 234 may be further adjus~ed ~y a baffle 290 mounted at thP bottom of ~he effluent reservoir.
The baffle 290 may be adjusted in order to regulate the rate o~
effluent flow throut3h the openings ~72. Low density material being separated within the inclined flow passages 216 collects within a separation chamher ~40 from where it may exit the clariier by means of an outlPt conduit 2~6.
Influent liquid is introduced into the clarifiex 210 through an inlet conduit 27S. Thereafter, the ~arious components of the clarifier 210 operate in substantially the : . .
same fashion described a~ove for the clariEier 10 of ~IGURE5 1 and 2. The clarifier 210 is also preferably adapted for oper-ation in an upflow mode. However, il- is also possible to oper ate the clarifier 210 in a downflow mode with influent being introduced through ~he conduit 238. In 5uch a mode of operation, the baf1e 290 may be removed or may be adjusted in order to regulate the flow of influent into the clarifier.
The Embodiment of FIGURE 9 . .
Yet another clarifier constructed in accordance with the present invention is indicated at 310 in FIGURE 9. The ~; overall configuration of the clarifier 31~ is similar ~o that of the clarifier 210 in FIGURES 7 and 8. However, like the clarifier 110 of FIGURE5 4 and 6, the clarifier 310 does not employ flow reyulating channel means at the upper ends of the inclined flow passages corresponding to those indicated at 34 in FIGURES 1 a~d 2. Accordingly, the clarifier 310 does not employ an effluent reservoir such as indicated at 236 in FIGURE 7~ Rather, effluent from the inclined flow passages enters the separation chamber 340 aboYe the inclined clarifier plates and flows over a we~r 386 to exit ~he clarifier through ~he outlet conduit 346.
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L~ ~3~31 The clarifier 310 is also provided with suyplcmental inclined plates t one of which is indicated at 390 in FIG~J~E 9.
Inclined plates such as those indicated at 3~0 in FIGU~E 9 could also be employed within the influent chambex 222 Ior the clarifier ~10 of FIGU~S 7 and ~. .
Otherwise, the clarifier 310 of FIGU~' 9 operat:es in substantially the same manner as describea above for ~he preceding clarifiers.
The ~mbodiment of FI~URE 10 Referring now to FIGURE 10, yet another embodiment of a clarifier constructed in accordance with the present invention is indicated at 410. The clarifier 410 of FIGURE
10 is of suhstantially the same construc~ion as the clarifier 110 in FIGUR~S 4-6. However, the clarifier 410 does not in~
clude an interface assembly such as that indicated at 190 in FIGURES 4-6. Otherwise, basic components of the clarifler 410 are ~abeled similarly as for the clarifier 110 except that the labels are preceded by the number 4 instead of the number 1.
The clarlfier 410 of PIGURE 10 is adapted to selec-tively receive inclined slave plates which are designed to vary the number and dimension.of inclined flow passages within the clarifier. Three different arrangernents of slave plates are illustxated at A, B and C~ Note that in sections A and B
of the clarifier 410, no flow regulating channel means are pro-vided at the upper ends of the flow p.~ssages~ Within the clar-ifier section C, flow regulaking channel means are pro~ided as indicated at 434 and are constructed and operated in substan tially the same manner as the flow reyulating channel means 34 vf ~IGURES 1 and 2.
The slave plate arrange~ents in the various clarifier sections A, ~ and C are described below.
Referring initially to ~he clarifier section A, the single clarifier plates 510 are arranyed between each adjacent set of inclined clarifier plates 41B. The slave plates 510 are of about the same width as the clarifier plates 41~ in order to extend completely across the flow passages 416, The upper ends of the slave plates terminate at approximately the same level as the upper ends of the inclined clarifier plates 418~ E~ow-ever, the lower ends 512 of the slave plates 510 terminate substantially ahove the flow regulating channel means 4~2.
This spacing is necessary since, as suspended solids settle on the upper surfaces of the slave plates 512, the solids slide downwardly and at the 10~7er ends of the slave plates 512 must pass to the upper surface of the respecti~e clarifier plates 418. Thus, the aboven~ted spacing is necessary so that the solids from the slave platPs 512 may drop to the clarifier plates 41S without being disrupted by the upward flow of liquid from the 10w regula,ting channel means 432.
The slave plates 512 are intended to generally divide the flow passages 416 evenly and are accordingly supported by sp2cers indieated at 514 adjacent the lower ends of the sl~ve plates~ Similar spacer means could be employed at the upper ends ~f the slave plates as well. However~ ~he upper ends of 24- ' q3~
the slave plates are preferahly supported by hangers 516 which secure the upper end of each slave plate 512 to an adjacent clarifier plate 418. In this manner, the hangers 516 serve to locate the slave plate vertically within the flow passages 416 as well as maintaining their spacing relative to the ad~acent clarifier plates 418.
Referring now to section B of the clarifier 410, similar slave plates 520 are arranged within.the flow passages 416 except that two of the slave plates 520 are arranged in evenly -L0 sp~eed apart relation within each o the flow passages 416.Otherwise, the slave plates 520 include generally similar spacer means 524 and hanger means 526 for maintaining their position between the clarifier plates 418.
In secti~n C of the clarifier 410, similar slave plates L5 530 are arranged individually within each o the inclined flow passages 416. However, with the flow regulating channel means 434 being employed at the upper ends of the flow passages 416, the slave plates 530 are termina~ed substan~ially therebelow.
The end spacing between the slave plates 530 and the flow regu-eo lating channel means 434 is for the same purpos~ described abovein connection with the spacing between the lower ends of the slave plates 512 and the flow regulating channel means 432 Accordingly, the slave plates 530 include spacer means 534 arranged at both their upper and lower ends. Hanger means 536 similarly engage the upper ends of the adjacent clarifier plates 418 and extend downwardly through the inclined flow passages for engagement with the slave plates 530.
Various embodiments o~ upflow and downflow clarifiers have thus been described above in accordallce with the present invention. It will be obvious that numerous additional modi-~ fications and variations are possible within the scope of the ; 5 present invention. Accordinglyl the scope of the present invention is defined only by the following appended claims.
, -
At thc same tirne, it is a related object of the invention to provide similar flow regulating channel means eff~ctive to direct separated phase matexial toward an appro~
priate portion of the clarifier. For example, with relatively heavy suspended solids being removed from a liquid passing upwardly through the flow passages, the fLow regulatiny channel means arranged adjacent the lower ends of the inclined flow passages uniformly distribute liquid to be clarified throughout the flow passages for travel in an upward dixection while assurin~ that initially settled solids pass directly to a suitable sediment cha~ber.
It is even further contemplated that the flow regu-lating channel means are provided at either the lower or upper ends of the inclined flow passages depending upon whether the lS clari~ier is contemplated for upflow or downflo~ operation.
In addition, similar flow regulating channel means may be employed at both inclined ends of the flow passages under certain condi~ions which will be made more apparent in the following description.
It is also an object of thP invention to provide a separate influent chamber within an inclined plate clarifier, the influent chamber being in communication with a suitable sediment chamber so that solids settling within the influent chamber may directly pass into the sediment chamber without ~5 fouling or overloading passages communicat;ing the influent chamber wi~h ~he f1QW PaSSage5.
It is yet another related object of the inventiorl to provide a separate influent chamber which is formed ~ith inclined spaced apart plates to facilitate initial settling of solids within the influen-t chamber. Solids which settle within the influent chamber may -then pass directly to the sediment collection chamber as noted above.
It is yet another object oE the invention to provide a vertical flow clarifier wherein inclined flow passages are formed by parallel, spaced apart clarifier plates, -the clarifier further being adapted for the selected installation of inclined slave plates between relatively fixed clarifier plates in order to provide an increased number of flow channels having an effectively reduced width or settling dimension.
An even further object of the invention is to provide a unique interface arrangement at the upper ends of the inclined flow passages for an upflow clarifier, the interface comprising a plurality of interface plates having surfaces which incline upwardly and toward each other -to form restric-ted passages for regulating the flow of liquid toward the upper ends of the flow passages, the inclined surfaces tending to facilitate the upward passage of relatively low densi-ty material so that it may properly escape from the clarifier.
Generally, therefore, the present invention is described as an improvement in a clarifier having inclined flow passages formed by a plurality oE spaced apart and inclined parallel plates mounted within a housingt the clarifier being adapted for upflow operation with the housing forming a sediment chamber below the inclined plates and collection means at the upper end of the plates for receiving effluent. The improvement comprises a separate influent chamber formed by -the housing, a portion of the housing forming openings adjacent the lower ends of the inclined plates and a plurality of flow regulating channel assernblies for regulating -the flow of influent into the lower inclined ends of the respective flow ws/., ~L~LZ~
passac3es. The openings formed by -the housing are in respective comrnunication wi-th -the flow regulatincJ channel assemblies.
The flow regula-tiny channel assemblies :include flow restricting passage means for distributing inEluent Erom the influent ehamber uniformly across the respective flow passages. Flow regulating passacJe means are provided for providing limited communication from a lower por-tion of the influent chamber into the sediment chamber and are selected to permit settled solids at the bottom of the influent ehamber to pass direetly into the sediment ehamber while inEluent tends to flow through the openings into the inelined flow passages.
Additional objeets and advantages of the present invention are made apparent in the following description having reference to the accompanying drawings.
Brief Deseription oE the Drawings FIGURE 1 is an end view, with parts in section, of an inelined plate clarifier eonstructed in accordance with the present invention.
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FIGURE 2 is a view takcn aloncJ section line II-II of FIGURE 1.
FIGURE 3 is an enlarged fragmentary view of a portion of the clarifier of FIGURE 2 to more clearly illus-trate the flow regulating channel assembly construction at the inclined ends of the flow passages within the clarifier.
FIGURE 4 is an end view, with parts in section, of another embodiment of an inclined plate clarifier constructed in accordance with the present invention.
FIGURE 5 is a plan view of the inclined plate clarifier of FIGURE 4.
FIGURE 6 is a view taken along section line VI-VI
of FIGURE 4.
FIGURE 7, located on the drawing containiny FIGURE 1, is an end view, with par-ts in sectiont of another ernbodiment of an inclined plate clarieier constructed in accordance with the present invention.
FIGURE 8, located on the drawing containing FIGURE 4, is a view of the inclined plate calrifier taken along section line VIII-VIII of FIGURE 7.
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FIGURE 9, located on the drawing containing FIGURE 4, is also an end view/ with parts in section, of still another embodiment of an inclined plate clarifier constructed in accordance with the present invention.
FIGURE 10, loca-ted on the drawing containing E'IGURE 4, is a centrally sectioned side view oE an inclined plate clarifier generally similar to the clarifier of FIGURE 4 while illustrating three different variations of slave plates selectively inserted between the standard parallel, spaced apart clarifier plates in order to adjust the number and size of flow passages within the clarifier.
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Descript~on of the Preferred ~odiTnents __ As was indic2ted abovP, the present invention relates t~ a clarifier of the type represented ~y ~he various embodi-ments in ~IGURES 1-10, each including a number of inclined flow passages formed by parallel~ spaced apart plates and charactexized by features particularly con~emplated ~o adapt the clarifier or use under various conditions while enhancin~
the rate and~or quality of clarification.
The present clarifier is particulary adapted for vertical flow operatîon. As will ~e made more apparent in the following description, certain o the clarifiers described ,below may be operated in either or both an upflow and downflow mode of operation. In this connection; the term "upflow"
indicates that the major direction o~ flow of liquid to be ~5 clarified within the clarifier takes place in an upward direc-tion at least through the inclined flow passages formed by the parall~l spaced apart plates. Similarly, ~he term "down-flow" indicates ~hat the major direction of flow for li~uid to be clarified ~akes place in a downward direction at least through the inclined flow passages.
The various novel features of the clarifier of the present invention are each illustrated in one or more of FIGURES 1-10. These novel features are summarized immediately below prior ~o a more detailed description o~ the drawings~
~5 The clarifier of FIGURES 1 and 2 includes a novel flow regulating channel assembly for regulating flow in each of a pluraltiy of inclinea flow passages~ Such a flow regu-,~ lating channel means may be employed to dis~ribute effluent .
into each of the inclined ~low passages at either the lower or upper ends of the passayes dependiny upon whether the clarifier is contPmplated for upflow or downflow operation .
respecti~ely.
Within the embodiment of FIGURES 1 and 2, flow regu~
lating channel means are emp]oyed at hoth the lower and upper ends of each inclined flow passage. With the clarifier being adaptedfor operation in an upflow mode, the flow regulating channel means at the lower ends of the flow passages serve to in~roduce influen~ to the flow passages while the flow regulating channel means at the upper ends of the inclined flow passages serve to remove clarified effluen~ from the flow passages and direct it toward a suitable ou~tle~
It will be apparent from the detailed description ~15 of the embodiment of FIGURES 1 and 2, as set forth below, that the clarifier may also be operated in a downflow mode with the flow regulatin~ channel means at the upper ends of the flow passages serving to distribute influent throughout the flow passages with or without similar flow regulating channel means at the lower ends of the flow passages serving to remove clar-ifier effluent. The flow regulating channel means at the ends of the inclined flow passages are illustrated in greater detail within FIGURE 3.
The clarifier of FIGURE 1 also includes a separate region which serves an an influPnt cha~er with the clarifier being operated in an upflow modeO The influent chamber is particularly contemplated for use where liquid to be clarified contains solids which tend ~o settle out rapidly. As may be _g _ best secn in FIGU~E 1, the bottom of the influ~it chamber is in communication Wit21 a sediment chamber in a lower poxtion of the clarifiex.
Communication between the in1uent ch~ber and the sediment chamber is limited so that liquid from the influent chamber tends to flow into ~3e inclined flow pass~ges with only settled s~lids ~ending to pass in~o the sediment ~hamber.
A modification of the influent chamber is illustrated in FIGURE 4 with an in~erted V-shaped plate regulating communi-cation hetween the influent chamber and the sedimen~ co:Llection chamber. The legs ~f the V-shaped plate extend downwardly into the sediment collection chamber substantially below the lower ends of the inclined plates in order to reduce the like:Lihood of settled solids being carried upwardly into the inclined L5 flow passages between the plates.
The clarifier of FI~URES 4-6 also illustrates the use of additional spaced apart parallel plates within the in-fluent chamber in order to improve flow distribution and to increase the initial settling of solids therein prior to !0 passage of the influent into the inclined ~low passages between the clarifier plates. In this manner, a substantial portion of suspended solids may pass directly into the sediment chamber and thus reduce the likelihbod of the flow passages becoming plugged or impeded.
'5 The clarifier of FIGURES 4-6 also includes an inter-face arrangement of V-shaped troughs above the upper ends of the inclined plates in order to better regulate flow within the clarifier, particularly when it is being operated in an upflow mode.
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g The clari~ier of ~GU~S 7 and 8 i5 modified to the extent that a singlc assembly of inclined clarifier plates is employed with a similar influent chal~er being formed along one side wall of the clarifier housing. Otherwise, the influent chamber is similarly in direct communication with a sèdiment collection chamber, flow regulatin~ channel means being employed to distribute liquid from the influent chamber throughout the lower ends of the inclined flow passages. Similar flow regu-lating channel means are also employed at the upper ends of the inclined flow passages to recei~e effluent.
FIGURE g illustrates yet another embodiment of a clar-ifier which is similar to that o~ FIG~RES 7 and 8 except that flow regulating channel means are not employed at the upper ends of the inclined flow passages. Rather, the upper ends of the flow passages are open with effluent being received in a separation chamber ormed above the inclined clarifier plates.
As was indicated above, the clarifier of FIGURE 10 is generally similar ~o the clarifier of FIGURES 4-6. The clarifier of FIGURE 10 illustrates three different variations of slave plates which may be selectively inserted between the fixed inclined cIarifier plates in ~rder to adjust the number and size of inclined flow passages within the clarifier de-pending upon the particular operating conditions being encountered, A more de~ailed description of the various embodiments illustrated in FIÇURES 1-10 is set ~orth belowO
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~20~ 3 Th~ Embodiment of FIGURE5 1-3 .
Referring now to the drawings and particularly to FIGURES 1 and 2 a ver~ical flow inclined plate clarifier of ~he type contemplated by the present invention is gener-ally indicated at 10. The clarifier 10 includes a housing 1~
having a separation section 14 of trapezoidal shape in cross-sec~ion wherPin a plurality of inclined flvw passages 16 are ~' formed ~y clarifier plates 18 mounted in parallel spaced apart relation wi'thin the housing. An upper section 20 of the ~0 clarifier housing includes outlet means through which clarifier effluent and relatively low density material may exit the clarifier.
Referring particularly to FIG~RE 1, the clarifier ~ housing also fonms a centrally arranged influent chamber 22 L5 through which influent is introduced into the clarifier, par-ticularly when the clarifier 10 is operated in an upflow mode.
The bottom of the'influ~nt chamber 22 is open so that settled solids may pass directly out of the influent chamber. The bottom of the influent cha~ber is partial~y olosed by an in-: 20 verted V-shaped flow limiting plate 24 which allows settled solids to pass from the bottom of the~influent chamber 2~ while liquid from the influent chamber'22 tends to be directed into the lower ends of the inclined flow passages 16 through openings 26 formed by side walls 28 and 30 of the housing.
~5 The clarifier 10 also includes flow regulating channel means 32 at the lower end of each of the inclined flow passages 16 for receiving influent from the openings 26 and uniformly distributing the influent throughout the respecti~e flow passages. In addition, the flow regulating channel means ~2 serve to communicate any solids settled ~herein directly to a sediment chamber in a lower por~ion of the clarifier ~ls described in greater detail below.
Similar flow regulating channel means 34 are also provided at ~he upper ends of the inclined flow passages 16 for two reasons within the emhodiment of FIGURES 1 and 2.
Initially, with the clarifier operating in an upflow mode,-the flow regulating channel means 34 serve to collect clari-- fied effluent and direct it to a central co]lectlon reservoir L0 36 which is in communication with an effluent conduit 3~. Low densi~y material such as oil or the like may rise into separa-tion chambers 40 and ~2 formed on opposite sides of the reservoir 36 within the upper housing section 20. Low density material from the separation chamb~rs 40 and 42 may pass over a weir 44 and out of the clarifier through a conduit 46. The height of the weir 44 must be maintained in carefully selected relation to the effluent conduit 38 to assure proper operation of the clarifier. The construction and operation of thPse portions of the clarifier are described in greater detail below.
The clarifier housing 12 also includes a tapered portion 48 forming a sediment chamber 50 bene~th the inclined clarifer plates 18 and the influent chamber 22. The tapered housing portion 48 may be formed as an integral portion of the entire clariier housing 12 or as a separate structure which may be ~5 combined with the rest of the clarifier 10 during installation.
The sediment chamber may also be formed by a floor or supporting structure upon which the clarifier 10 is mounted. In any event, the sediment chamber 50 is equipped with means (nct shown~ for ~13-S~
periodically or con~inuously ~moving sediment which collects.in the char~er 50 during operatioll o the clarifier.
.Referring also to FIGV~ 3, each of the ~low reyulating channel means 32 at the lower ends of the inclined flow passages . 16 is ~ormed basically by an elong~ted plate 52 which is spaced apart from the lower surface of an adjacent clarifier plate 18 to form an enclosed region S4 extendilly across the-leng~h of each of the inclined flow passages 16. An upper eclge 56 of each of the el~n~ated plates 52 is bent inwardly toward the adjacent D inclined clarifier plate 18 in order to form a flow restriction ~or liquid passing out of the enclosed region 540 Simi.larly, a lip 58 extends downwardly ~rom the respecti~e inclined clari-fier plate 18 to form another flow restriction for limiting liquid flow downwardly from the enclosed region 54. In this manner, liquid entering ~ach of the enclosed regions 54 through one of the openi~gs 26 tends to be distributed along the length ; of the enclosed region for even pas.sage into the respective in-clined flow passages.
The relative flow restrictions formed by the upper edge 56 and the lip 58 are sized so that flow caused within the clari-fier by a hydrostatic or hydrodynamic head tends ~o pass upwardly from the en~losed region 54 through the respective inclined flow passages 16 rather than downwardly toward the sediment c:hambex 50. . The opening formed between the lip 58 and the elongated plate 52 allows solids which settle wi~hin the enclosed region 54 to pass directly into the sediment colleckion chamber 50.
Thus, the flow regulating channel means 32 serve to distribute influen~ uniformly throughout ~he inclined flow passages 16 while allowing any initially settled solids to pass directly O into the sediment collection chamber 50 V~
The flow regulating channel means 34 arranged at the . upper ends of the inclined flow passayes 16 are o~ similar . construction except that the cornporlents o~ the flow regulating channel means 3~ are rotated 180 re].ative to the co~nponents of the flow xegula~ing channel means 32. Accordingly, each of the upper flow regulating channel means 34 is similarly foxmed from an elongated plate indicated at 62 to define an enclosed region 64 and having a similar bent lower edge 66 with a lip 6~ extending upwardly from the upper surface of the adjacent inclined clarifier plate 18.
Referring particularly to FIGURE 1, it ma~ be seen that the two side walls 28 and 30 for ~e influent chamber 22 extend upwardly through the upper housing portion 20 to form the effluent reservoir 36. The influerlt chamber 22 and the effluent reservoir 36 are separated by a plate 70. Above the plate 70, the side walls 28 and 30 form openings 72 which communicate the respective enclosed regions 64 with the effluent reservoir 36.
As will be more apparent from the following operational descrip-tion for the clarifier 10, clarified effluent tends to be col-2~ lected within the reservoir 36 while low density material is collected within the separation chambers 40 and 42. A baffle 74 ext~nds along the length of the effluent reservoir 36 ln order to assist in maintaining more uniform flow through the openings 72.
~S In operation of the clarifier 10 in an upflow mode, liquid to be clarified is introduced into the influent chamher 22 through an inlet conduit 76. The influent tends to flow downwardly through the chamber 22~ So~ids which set~le rom . .
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the influent within the inlet char~er 22 pass dixectly into the scdiment chamber 50 past the V-shaped plate 24. It may he seen in FI~UR~ l that the inclined clarifier plates 18 are supported by side beams 78 and 80 as well as spaced apart centel- beams 82 and 84 which are arranged adjacent the inverted ~-shaped plate 24. The downwardly depending legs of the V-shaped plate 24 may be adjusted to v~ry theopenings fo~ned with the respective beams . 82 and 84 depending upon the amount of solids tending to settle within ~he in1uent chamber 22. Prefexably, the openings at the .0 bott~m of the influent chamber permit any settled ~olids to pass directly in~o the se~iment collection chamber 50 while the in-fluent liquid flows pxedominantly through the openings 26.
The influent flowing through the openings 26 enters the respective enclosed regions 54 and passes upwardl.y through .5 the respective inclined flow passages 16 as described above.
Any additional solids which tend to settle out within the enclosed region 54 pass downwardly and airectly enter the sediment chamber 50. Thus, a substantial portion of solids within the influent may be communicated into the sediment cham-!0 ber 50 even before the influent enters the respective inclined flow passages 16. This serves to redu~ce the amoun~ of settling required within the flow passages and produces a better quality effluent while also tending to prevent the possibility of solids becoming plugged within any portion of the inclined ~low passages.
!S ~s liquid from the enclosed regions 54 of the flow xegulating channel means 32 passes upwardly throush the respec-tive inclined flow passages 16, solids tend to settle out on the upper inclined surfacPs of th~ plates 18 and to slide down-wardly toward the sediment chamber S0 under the influence of :lO gravity~
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At the same time, ~Iny rel.ati.vely low density material such as oil, tends to collect upon a lower inclined sur~ace of - each of the clarifiex plates 18. ~his low density material tend~ to pass upwardly out of the open upper ends of the in-S clined flow passages 16 into th~ separation chambers 40 ~nd 42, The low density material from the separation chambers may then pass over the weir 44 and out of the clari.fier through the . . conduit 46.
: At the same time, clarified effluent approaching the D upper ends of the respective inclined flow passages 16 tends to enter the enclosea regions 64 of the respective flow regu-lating channel means 34 and to pass through the openings 72 into the effluent reservoir 36. T.he effluent may of course . exit the reservoir 36 through the outlet conduit 38, Any low ~D density material tending to separate from the efflùent within the upper enclosed region 64 may pass upwardly through the restricted openings formed between the plates 62 and the l.ips ; 68. Thus, the upper flow regulating channel means 3~.serve to collect clarified effluent and direct it to the reservoir ) 35. At the same ~ime, the restricted openings along the upp~r edges of their enclosed regions 64 per~it any separated low density materials therein to p~ss into the separation chambers : 40 and 42. In addition, these openings serve to prevent th~
. upper flow regulating channel means 34 from becoming air-locked.
i Before pxooeeding to a description of the other mbodi-ments, it is also noted that the clarifier 10 of FIGURES 1-3 may be operated in re~erse with liquid.to be ~larified entering :, ' .-17-through the conduit 3~ and b~ing directed through the opc!nings 72 into the flow regula~ing channel meanS 34. In tnis event, the 10w regulating chanllel means 3~ serve a similar function as described above for the flow regulating channel means 32 in that they uniformly distribute the infl~ent throughout the respective inclined flow passages 16. Thereafter, the influent liguid passes downwardly through the passages 16 with the solids again entering the sediment collection chamber 50.
Clarifiea effluent is collected by the Llow regulating channel .
.0 means 32 and directed through the openings 26 and chamber 22 for exi.t from the clarifier through the conduit 76. ~ow density material such as oil would again tend to be collected within the separation chambers 40 and 42 for removal from the clarifer in the same manner described ah~ve.
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.5 Tne Embodiment of FIGURES 4-6 . Anothex emobidment of a clarifier according to the present in~ention is indicated a~ 110 in FIGURES 4-6.. Many components of the clarifier 110 are similar to those described above for the clarifier 10 of FIGURES 1 and 2. Accordingly, 0 similar components in the clarifier 1~0 are identified by the same numerical labels as for the clarifier 10 while being ~; preceded by the numeral !'1". Accordingly, the housin~ 112 for the clarifier 110 is similar to the housing 12 for the clarifier 10. A number of modifications ancl additional features are included within the clarifier 110.
Initially, the influent chamber 122 is open at the top since the clarifier 110 does not include an effluent ~18 reservoir similar to that indicated at 36 in FIGURE. 1.
Similarly, th~re are no flow regula~irlg channel means at the upper ends of the flow passages such as those indicated at 34 in FIGURE 1. ~ather, effluent from the clarifier 110 collects within .the separation chambers 140 and 1~2. Effluent in the separation chambers 140 and 1~2 passes over the weir 144 and exits the clarifier through the-effluent outlet con-duit 146.
An ad~itional feature is provided wi~lin the influent L0 chamber 122 for faciIitating rapid separation of solids. As - may be best seen in FIGURE 6, a plurality of relatively widely spaced inclined plates 186 are arranged within the influent chambex 122 and.act in generally conventional fashion to promote flow distribution and the separation of solids within L5 the influent chamber. Thus, a greater percentage of solids is removed within the influent chamber so that a higher quality effluent may be produced within the inclined flow passages 116.
Referring particularly to FIGURE 4, the inverted eo V-shaped plate l24 which limits communication from the in-fluent chamber 122 into the sediment ~ollection chamber 15Q
extends substantially downwardly into the sediment collec-tion chamber~ Solids sliding down the upper surfaces of the plate 124 ~re thus carried lower in~o the sediment collection . e5 chamber 150 before falling freely from the edges of the in-clined V-shaped plate. Thus, there is less likelihood of the solids being carried upwardly into ~he inclined flow passages 116.
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.
Influent from the ch~mber 122 passes throu~h ~he openings 126 and is di.stributed throughout the inclined flow passayes 116 by ~he ~low reyulating channel means 132 which .
operate in the same manner as described above for the flow regu-lating channel means 32 of FIGURES 1 and 2. Vnifo~m flow within the flow passages 116is urther promoted by an interfacP assembly 1~0 comprisiny a plurality of V-shaped troughs 192. Each trough is formed with a pair of inclined surfaces 194 and 1~6~ The V-shaped troughs 192 are spaced apart in order to form openings 198 which extend trans~ersely throughout the clarifier relative to th~ inclined flow passages 116. The inclined surfaces o~ the troughs 192 prevent the inter~ace assembly from trapping any material while the openings 198 reyulate.the flow of effluent from the inclined flow passayes 116 into the chambers 140 and :15 142. Thus, the interface assem~ly serves to promote more uniform :~ flow of liquid upwardly through the inclined flow passages 116 Otherwise, the clarifier of FIGURES 4-6 operates i.n generally the same manner as was describPd above for the clari-fier 10 of FIGURES 1-3~
~:.20 The Embodiment of FIGURES 7 and 8 ~ ' : Yet another clarifier constructed in accordance with .
the present invention is indicated at 210 in FIGURES 7 and 8.
The clarifier 210 includes generally the same features and operates in essentially the same manner as the clariier 10 of FI~VRES 1-3. However, the clarifier 210 includes only a single array of inclined clarifier plates with an influent chamber being f~rmed along one lateral side of the clarifier housing.
, ~:~Z~3~
Referring particularly to ~IGV~ 7, the clarifier 21~ i.ncludes a housi.ng 212 fonning a separation section 214.
Inclined flow passages 216 ar~ ~ormed by parallel, spaced apart clarifier plates 218.
S An upper housing sec~ion 220 forms separate means for receiving effluent and low density material from the clarifier. An influent chamber 222 is formed along one lateral side of the clarifier housing 212 with a side wall 2~8 for the influent chamber forming openings 226 for conmlunicating influ-L0 ent from the chamber 22~ into the flow reyula~ing channel means 232 corresponding ~o those indicated at 32 in FIGURES
1 and 2.
An adjustable plate 224 is moun~ed a~. the open lower end of the influent chamber 222 in order to regulate the pas~
sage of settled solids from the influent cham~er 222 into the sediment chamber 250 in the same manner described above for the flow limiting plate 24 of FIGURES 1 and 2.
The flow regulatiny channel means 232 serve substan- .
tially the same purpose as the flow regulating channel means 32 of FIGURES 1 and 2. Normal separation takes place as liquid flows upwardly through the inclined flow passages 216. Flow regulating channel means 234 are arranged at the upper ends of the inclined flow passages 216 and conform wi~h the flow regula-ting channel means 34 of FIGU~ES 1 and 2. Clarifier effluen~
received by the flow regulating channel means 234 is communicated through openings 272 into an effluent reservoir 236 from which it exits the clarifier through an outlet conduit 238. ~low from the upper flow regulating channel means 234 may be further adjus~ed ~y a baffle 290 mounted at thP bottom of ~he effluent reservoir.
The baffle 290 may be adjusted in order to regulate the rate o~
effluent flow throut3h the openings ~72. Low density material being separated within the inclined flow passages 216 collects within a separation chamher ~40 from where it may exit the clariier by means of an outlPt conduit 2~6.
Influent liquid is introduced into the clarifiex 210 through an inlet conduit 27S. Thereafter, the ~arious components of the clarifier 210 operate in substantially the : . .
same fashion described a~ove for the clariEier 10 of ~IGURE5 1 and 2. The clarifier 210 is also preferably adapted for oper-ation in an upflow mode. However, il- is also possible to oper ate the clarifier 210 in a downflow mode with influent being introduced through ~he conduit 238. In 5uch a mode of operation, the baf1e 290 may be removed or may be adjusted in order to regulate the flow of influent into the clarifier.
The Embodiment of FIGURE 9 . .
Yet another clarifier constructed in accordance with the present invention is indicated at 310 in FIGURE 9. The ~; overall configuration of the clarifier 31~ is similar ~o that of the clarifier 210 in FIGURES 7 and 8. However, like the clarifier 110 of FIGURE5 4 and 6, the clarifier 310 does not employ flow reyulating channel means at the upper ends of the inclined flow passages corresponding to those indicated at 34 in FIGURES 1 a~d 2. Accordingly, the clarifier 310 does not employ an effluent reservoir such as indicated at 236 in FIGURE 7~ Rather, effluent from the inclined flow passages enters the separation chamber 340 aboYe the inclined clarifier plates and flows over a we~r 386 to exit ~he clarifier through ~he outlet conduit 346.
O
L~ ~3~31 The clarifier 310 is also provided with suyplcmental inclined plates t one of which is indicated at 390 in FIG~J~E 9.
Inclined plates such as those indicated at 3~0 in FIGU~E 9 could also be employed within the influent chambex 222 Ior the clarifier ~10 of FIGU~S 7 and ~. .
Otherwise, the clarifier 310 of FIGU~' 9 operat:es in substantially the same manner as describea above for ~he preceding clarifiers.
The ~mbodiment of FI~URE 10 Referring now to FIGURE 10, yet another embodiment of a clarifier constructed in accordance with the present invention is indicated at 410. The clarifier 410 of FIGURE
10 is of suhstantially the same construc~ion as the clarifier 110 in FIGUR~S 4-6. However, the clarifier 410 does not in~
clude an interface assembly such as that indicated at 190 in FIGURES 4-6. Otherwise, basic components of the clarifler 410 are ~abeled similarly as for the clarifier 110 except that the labels are preceded by the number 4 instead of the number 1.
The clarlfier 410 of PIGURE 10 is adapted to selec-tively receive inclined slave plates which are designed to vary the number and dimension.of inclined flow passages within the clarifier. Three different arrangernents of slave plates are illustxated at A, B and C~ Note that in sections A and B
of the clarifier 410, no flow regulating channel means are pro-vided at the upper ends of the flow p.~ssages~ Within the clar-ifier section C, flow regulaking channel means are pro~ided as indicated at 434 and are constructed and operated in substan tially the same manner as the flow reyulating channel means 34 vf ~IGURES 1 and 2.
The slave plate arrange~ents in the various clarifier sections A, ~ and C are described below.
Referring initially to ~he clarifier section A, the single clarifier plates 510 are arranyed between each adjacent set of inclined clarifier plates 41B. The slave plates 510 are of about the same width as the clarifier plates 41~ in order to extend completely across the flow passages 416, The upper ends of the slave plates terminate at approximately the same level as the upper ends of the inclined clarifier plates 418~ E~ow-ever, the lower ends 512 of the slave plates 510 terminate substantially ahove the flow regulating channel means 4~2.
This spacing is necessary since, as suspended solids settle on the upper surfaces of the slave plates 512, the solids slide downwardly and at the 10~7er ends of the slave plates 512 must pass to the upper surface of the respecti~e clarifier plates 418. Thus, the aboven~ted spacing is necessary so that the solids from the slave platPs 512 may drop to the clarifier plates 41S without being disrupted by the upward flow of liquid from the 10w regula,ting channel means 432.
The slave plates 512 are intended to generally divide the flow passages 416 evenly and are accordingly supported by sp2cers indieated at 514 adjacent the lower ends of the sl~ve plates~ Similar spacer means could be employed at the upper ends ~f the slave plates as well. However~ ~he upper ends of 24- ' q3~
the slave plates are preferahly supported by hangers 516 which secure the upper end of each slave plate 512 to an adjacent clarifier plate 418. In this manner, the hangers 516 serve to locate the slave plate vertically within the flow passages 416 as well as maintaining their spacing relative to the ad~acent clarifier plates 418.
Referring now to section B of the clarifier 410, similar slave plates 520 are arranged within.the flow passages 416 except that two of the slave plates 520 are arranged in evenly -L0 sp~eed apart relation within each o the flow passages 416.Otherwise, the slave plates 520 include generally similar spacer means 524 and hanger means 526 for maintaining their position between the clarifier plates 418.
In secti~n C of the clarifier 410, similar slave plates L5 530 are arranged individually within each o the inclined flow passages 416. However, with the flow regulating channel means 434 being employed at the upper ends of the flow passages 416, the slave plates 530 are termina~ed substan~ially therebelow.
The end spacing between the slave plates 530 and the flow regu-eo lating channel means 434 is for the same purpos~ described abovein connection with the spacing between the lower ends of the slave plates 512 and the flow regulating channel means 432 Accordingly, the slave plates 530 include spacer means 534 arranged at both their upper and lower ends. Hanger means 536 similarly engage the upper ends of the adjacent clarifier plates 418 and extend downwardly through the inclined flow passages for engagement with the slave plates 530.
Various embodiments o~ upflow and downflow clarifiers have thus been described above in accordallce with the present invention. It will be obvious that numerous additional modi-~ fications and variations are possible within the scope of the ; 5 present invention. Accordinglyl the scope of the present invention is defined only by the following appended claims.
, -
Claims (14)
- Claim 1. In a clarifier having inclined flow passages formed by a plurality of spaced apart, inclined parallel plates mounted within a housing, the clarifier being adapted for upflow operation with the housing forming a sediment chamber below the inclined plate and means at the upper end of the plates for receiving effluent, the improvement comprising, a flow regulating channel assembly for regulating flow of influent into the respective flow passages from a separate influent chamber formed by the housing, a portion of the housing forming openings adjacent the lower ends of the inclined plates for respectively com-municating the influent chamber with each inclined flow passage, each flow regulating channel assembly including an elongated plate spaced apart from the lower inclined surface of each clarifier plate adjacent its lower inclined end, the elongated plate forming an enclosed region together with the lower inclined surface of the spaced apart clarifier plate, the enclosed region being in communication with the influent chamber through one of said openings, upper and lower flow restricting passage means being arranged above and below the elongated plate and extending substantially along the length of the elongated plate to limit flow from the upper and lower ends respectively of the enclosed region while communicating the enclosed region with both the respective flow passage and sediment chamber, the amount of flow limitation produced by the upper and lower flow restrictions being selected so that influent liquid entering the enclosed region from the separate influent chamber tends to he distributed uniformly across the respective flow passages and to flow upwardly from the enclosed region while suspended solids settling out of the influent liquid within the enclosed region tend to pass downwardly through the lower flow restriction toward the sediment chamber.
- Claim 2. The clarifier of Claim 1 further comprising similar flow regulating channel assemblies formed adjacent an upper inclined surface at the upper inclined end of the respective clarifier plates, effluent collection means being formed by an upper portion of the clarifier housing in communication with said similar flow regulating channel assemblies, a separation chamber also being formed above the upper inclined ends of the flow passages to receive relatively low density material tending to separate within the inclined flow passages.
- Claim 3. The clarifier of Claim 1 wherein a lower end portion of the influent chamber is in limited communication with the sediment chamber to allow solids settling within the influent chamber to pass directly to the sediment chamber.
- . Claim 4. The clarifier of Claim 3 further comprising additional inclined, spaced apart plates arranged within the influent chamber to promote settling of the suspended solids therein.
- Claim 5. In a clarifier having inclined flow passages formed by a plurality of spaced apart and inclined parallel plates mounted within a housing, the clarifier being adapted for upflow operation with the housing forming a sediment chamber below the inclined plates and collection means at the upper end of the plates for receiving effluent, the improvement comprising, a separate influent chamber formed by the housing, a portion of the housing forming openings adjacent the lower ends of the inclined plates, a plurality of flow regulating channel assemblies for regulating flow of influent into the lower inclined ends of the respective flow passages, the openings formed by the housing being in respective communication with the flow regulating channel assemblies, the flow regulating channel assemblies including flow restricting passage means for distributing influent from the influent chamber uniformly across the respective flow passages, and flow regulating passage means providing limited communication from a lower portion of the influent chamber into the sediment chamber, the flow regulating passage means being selected to permit settled solids at the bottom of the influent chamber to pass directly into the sediment chamber while influent liquid tends to flow through the openings into the inclined flow passages.
- Claim 6. The clarifier of Claim 5 wherein each of the flow regulating channel assemblies includes additional flow restricting passage means for allowing initially settled solids to pass directly into the sediment chamber.
- Claim 7. The clarifier of Claim 5 further comprising a plurality of spaced apart inclined parallel plates arranged within the influent chamber.
- Claim 8. The clarifier of Claim 5 further comprising an inlet for introducing influent liquid into the influent chamber, the inlet being arranged adjacent the upper inclined ends of the parallel plates in the influent chamber.
- Claim 9. The clarifier of claim 5, further including a plurality of inclined, spaced apart plates being arranged within the influent chamber to assist in the settling of solids from liquid therein.
- Claim 10. The clarifier of Claim 9 wherein the influent chamber includes an inlet conduit for admitting influent to the influent chamber, the influent conduit being located adjacent the inclined ends of the spaced apart plates within the influent chamber opposite from the openings for communicating the influent chamber with the respective flow regulating channel means.
- Claim 11. The clarifier of claim 5, further including a plurality of slave plates being selectively arranged between and parallel with the inclined plates forming the flow passages in order to effectively reduce the dimensions of the flow passages and enhance clarifying operation under selected conditions, an inclined end of each slave plate terminating in spaced apart relation from the inclined ends of the inclined clarifier plates adjacent the inlet means for permitting liquid from the inlet means to enter all inclined passages formed between the inclined clarifier plates and the slave plates, each slave plate having a width approximately equal to the width of the parallel spaced apart plates in the clarifier and a length approximately equal to the length of the parallel spaced apart clarifier plates, and means for supporting the slave plates between the adjacent clarifier plates, said supporting means being adapted to permit selective insertion of said slave plates into the clarifier in order to form a plurality of inclined flow passages of generally equal area and reduced width between said inclined plates and said slave plates, said supporting means further being adapted to permit selective removal of said slave plates in order to provide flow passages of increased width formed between said inclined plates.
- Claim 12. The clarifier of Claim 11 wherein two slave plates are arranged between each adjacent pair of clarifier plates and further comprising means for supporting the two slave plates in generally even spaced apart relation relative to each other and the adjacent clarifier plates.
- Claim 13. The clarifier of Claim 5 further comprising interface means arranged above said inclined plates to form elongated transverse openings above the inclined plates for restricting communication between said inclined flow passages and said collection chamber.
- Claim 14. The clarifier of Claim 13 wherein said interface means comprises a plurality of inclined interface plates extending transversely above said inclined clarifier plates, adjacent and oppositely inclined interface plates forming restricting transverse passages above said inclined flow
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000313598A CA1120409A (en) | 1978-10-17 | 1978-10-17 | Vertical flow inclined plate clarifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000313598A CA1120409A (en) | 1978-10-17 | 1978-10-17 | Vertical flow inclined plate clarifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1120409A true CA1120409A (en) | 1982-03-23 |
Family
ID=4112620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000313598A Expired CA1120409A (en) | 1978-10-17 | 1978-10-17 | Vertical flow inclined plate clarifier |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1120409A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3929044A1 (en) * | 1989-09-01 | 1991-03-14 | Stephan Dipl Ing Winkelhorst | Oil separator - to separate oil from oil-water mixts. in inclined-plate separator, for removal of solid material deposits |
| US7527726B2 (en) | 2006-01-25 | 2009-05-05 | Q'max Solutions Inc. | Fluid treatment apparatus |
-
1978
- 1978-10-17 CA CA000313598A patent/CA1120409A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3929044A1 (en) * | 1989-09-01 | 1991-03-14 | Stephan Dipl Ing Winkelhorst | Oil separator - to separate oil from oil-water mixts. in inclined-plate separator, for removal of solid material deposits |
| US7527726B2 (en) | 2006-01-25 | 2009-05-05 | Q'max Solutions Inc. | Fluid treatment apparatus |
| US7964101B2 (en) | 2006-01-25 | 2011-06-21 | Q'max Solutions Inc. | Fluid treatment process |
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| MKEX | Expiry |