JP2006075685A - Inclined flow channel module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inclined flow channel module capable of keeping the separation efficiency of a suspended substance to be treated high by optimizing the height of an inclined flow channel corresponding to the kind of the suspended substance to be treated or the concentration, flow rate or flow velocity of a suspension and capable of easily altering the height of the inclined flow channel. <P>SOLUTION: The inclined flow channel module 1 is sunk in a suspension separation tank and constituted so as to separate the suspended substance to be treated from the suspension to take out a clarified liquid and has a housing 2 and a large number of inclined plates 3 are attached to the housing 2 in a vertically laminated state to form a large number of inclined flow channels. The inclined plates 3 are connected through bellows 4 to freely alter the mutual intervals between the inclined plates 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an inclined channel module for separating a suspended substance suspended in a suspension from a dispersion medium, such as solid-liquid separation or oil-water separation, and in particular, depending on the difference in the concentration of the suspension The present invention relates to an inclined channel module capable of adjusting the angle.

  Conventionally, a method using gravity separation is widely known as a method for removing suspended substances from a suspension, particularly in water treatment (see, for example, Non-Patent Document 1). Inclined sedimentation separators are widely used in the field of water treatment. The inclined sedimentation separator is based on the principle that when an inclined plate or horizontal plate is inserted into the settling tank, the clarified liquid grows on the lower surface of the plate, the sedimentation area increases by the insertion area, and the clarified liquid grows faster. Used. The inclined sedimentation separator can increase the separation area in proportion to the insertion area of the plate, and can reduce the water area load, so that suspended particles having a low sedimentation speed can be separated.

  Conventional inclined sedimentation separators can be broadly classified into three types: a transverse flow type, a longitudinal flow type, and a conical counter flow type. A lateral flow type inclined sedimentation separator is one in which an inclined plate (or inclined tube) is inserted into a flow of a dispersion medium in a horizontal direction (for example, see Patent Documents 1 to 3). A vertical flow type inclined settling device inserts an inclined plate (or inclined tube) into the flow of a dispersion medium in the vertical direction (see, for example, Patent Documents 4 to 6). In the conical counterflow type, a conical multistage inclined plate is provided, and the dispersion medium is discharged or introduced along the conical axis (see, for example, Patent Documents 7 to 10).

  Among these, in the conical counterflow type, since the flow path through which the suspension flows is conical, the flow velocity in the flow path between the inclined plates increases as the position is closer to the conical axis. Therefore, since it is difficult to make the flow of the dispersion medium uniform, the separation efficiency by gravity separation is inferior to the other two methods. For this reason, in a water treatment facility such as a normal sewage treatment plant, a lateral flow type or vertical flow type inclined sedimentation separation apparatus is mainly used.

  Longitudinal flow type inclined sedimentation separators have been put into practical use since the earliest. This method is less susceptible to the adverse effects of the bottom flow phenomenon due to the density flow because the suspension flow is directed upward. Moreover, although sedimentation sludge accumulates in the bottom part of a sedimentation separation tank, since this sedimentation sludge is easy to guide | induced to one place, mud collection is easy. However, although the water area load is smaller than that of a normal natural sedimentation separator (which does not use an inclined plate; see Non-Patent Document 1), the water area load is larger than that of a lateral flow type. Therefore, an installation area proportional to the amount of processing liquid is required.

  The lateral flow type inclined sedimentation separator can reduce the water area load by stacking inclined plates in multiple stages in the vertical direction. However, in this method, when the inflowing suspension has high turbidity, the bottom flow phenomenon due to the density flow becomes remarkable, and there is a problem that the load is concentrated on the lower separation flow path. In this case, there is a problem that the amount of the suspension that is not sufficiently clarified flows out in a short circuit through the lower separation channel, and it is difficult to obtain a sufficient separation effect. Usually, in order to suppress the generation of density flow, measures are taken to make the flow uniform by providing inflow and outflow rectifying walls.

  Also in the lateral flow type inclined sedimentation separator, a system in which a plurality of multi-stage inclined plates are arranged in multiple stages along the transverse flow (Patent Document 1), and multi-stage inclined plates are arranged on the left and right of the outlet of the dispersion medium. Several methods, such as a method (patent documents 2 and 3), have been devised.

  The inventor of the present invention has proposed a suspension separation device in which a settling channel module having a large number of inclined plates is set in a settling tank (Patent Document 11).

  FIG. 6 is a diagram showing a configuration of a lateral flow type inclined sedimentation separation apparatus in which an assembly of a plurality of multistage inclined plates is arranged in multiple stages along a lateral flow (see Patent Document 1). In the inclined sedimentation separation apparatus 101 of this system, a suspension that is a liquid to be treated for sedimentation separation (herein, since the dispersion medium is water, hereinafter referred to as “suspended water”) is input to the floc formation pond 103. The In the flock formation pond 103, the suspension water is gently stirred by a flocculator (slow stirring device) 102. In this process, flocs (aggregates) of suspended substances in the suspension water grow and settling speed increases. Next, the suspended water flows into the settling separation tank 105 through the upstream flow straightening wall 104. In the settling tank 105, the suspended water is separated into water and floc and clarified. The clarified water passes through the inclined plate assemblies 106 arranged in four stages, and then flows into the outflow tank 108 through the downstream rectifying wall 107. The water flow is rectified by the upstream rectifying wall 104 and the downstream rectifying wall 107, and the generation of density flow is suppressed. The water in the outflow tank 108 is discharged from the upper part of the outflow tank 108 to the intake channel 109.

  As shown in FIG. 6B, the inclined plate assembly 106 has a configuration in which a large number of inclined plates 110 are vertically stacked at intervals. With this configuration, in the flow path 111 formed between the inclined plates 110, the floc settled distance is shortened, so that the growth of clarified water is accelerated. The floc accumulated on the bottom surface of the channel 111 flows along the inclined plate and is discharged below the channel 111. The discharged floc settles at the bottom of the sedimentation tank 105.

  Here, the principle of sedimentation separation in which the clear water and the suspended solids are separated by gravity sedimentation in the flow path 111 between the inclined plates 110 will be described.

FIG. 7 is a cross-sectional view showing a case where a suspension is passed through a flow path in a horizontally placed tube. Let the suspension flow through the channel at a constant flow rate. In general, the flow velocity is different between the vicinity of the tube wall and the center, but for the sake of simplicity, the effect near the tube wall is ignored, and the suspension flows uniformly at an average flow velocity u ₀ . The Reynolds number of the suspension R is sufficiently smaller than the critical Reynolds number R _c, the suspension flow is assumed to be parallel laminar flow.

In the case of an ideal suspension (a suspension in which the force between particles is only a rigid body repulsion), buoyancy and gravity act on the suspended particles in the suspension. Here, the case where gravity is larger than buoyancy is considered. In this case, the suspended particles settle while receiving the resistance of the dispersion medium, and eventually settle at a constant sedimentation rate (terminal sedimentation rate). The terminal settling velocity of suspended particles and w _0. The terminal sedimentation velocity w ₀ [cm / sec] is expressed as (Equation 1) depending on the magnitude of the Reynolds number. Here, g is the acceleration of gravity [cm / sec ² ], ρ _s , ρ is the density of suspended particles and dispersion medium [g / cm ³ ], d is the particle diameter [cm], μ is the viscosity of water [g / cm (cm · sec)], R (= dw ₀ ρ / μ) is the Reynolds number.

  It is assumed that suspended particles at the uppermost portion (point A) at the inflow end of the flow channel settle while flowing and reach the flow channel bottom surface at point C at the end of the flow channel. Let L be the length of the channel. Let H be the height of the channel. At this time, (Equation 2) holds.

  The suspended particles below the uppermost portion (point A) of the inflow end of the flow channel reach the bottom surface of the flow channel before point C. Accordingly, the clarified liquid gradually grows in the flow path from the inflow side to the outflow side. And all the suspended particles are separated on the outflow side of the flow path, and only the clarified liquid flows out.

On the other hand, _let W _d be the width of the flow path. The amount Q of the inflowing suspension is expressed by (Equation 3).

The area S when the channel is viewed in plan is S = W _d · L. Therefore, the water area load Q / S is as shown in (Expression 4).

  (Equation 4) indicates that when a suspension having a constant sedimentation rate is processed, the processing amount is proportional to the area S of the precipitation tank. Therefore, in order to increase the processing amount, it is necessary to increase the area S of the precipitation tank.

Next, the inclined channel will be described. FIG. 8 is a cross-sectional view showing the case where the suspension is passed through the flow path between the separation plates placed at an inclination. As illustrated in FIG. 8A, the separation plate AD and the separation plate BC are disposed to be inclined at the elevation angle θ. Both separation plates AD and BC are arranged in parallel at a distance d, and a flow path is formed therebetween. The length of the flow path is L ^* . The suspension flows into the channel at a constant flow velocity u ₀ , and a parallel laminar flow is formed inside the channel. For ease of consideration, the flow path of FIG. 4A is rotated clockwise by an angle θ as shown in FIG. 8B. In this case, it can be considered in the same manner as in FIG. 3 except that the sedimentation direction of the suspended particles is inclined by an angle θ with respect to the vertical direction. Therefore, (Formula 5) and (Formula 6) are obtained in the same manner as (Formula 2).

(Equation 6) is the basic formula for sedimentation separation in the inclined channel. U ₀ d = q on the right side of (Expression 6) represents the amount of suspended water treated per unit width in this inclined channel. The denominator represents the projected area (per unit width) of the inclined channel onto the horizontal plane.

Therefore, as shown in FIG. 6, by forming the inclined plate aggregate 106 by laminating the inclined plates 110 in the vertical direction, a sedimentation operation is performed such that the processing efficiency per unit area reaches 10 times or more. Can be done.

Japanese Patent Laid-Open No. 62-163713 Japanese Examined Patent Publication No. 52-41507 Japanese Patent Publication No.55-35962 JP-A-8-112505 US Pat. No. 4,305,819 Japanese Patent Publication No.55-37927 Japanese Examined Patent Publication No. 44-623 Japanese Utility Model Publication No. 52-22373 Japanese Utility Model Publication No. 44-5491 Japanese Utility Model Publication No. 56-46806 Japanese Patent Application No. 2004-240106 Water Treatment Management Handbook Editorial Committee, “Water Treatment Management Handbook”, first edition, Japan, Maruzen, September 30, 1998, pp. 131-132.

  As shown in FIG. 6, in the transverse flow type inclined sedimentation separation apparatus 101, an inclined plate aggregate 106 in which a large number of inclined plates 110 are stacked in the vertical direction at equal intervals in a sedimentation separation tank 105. 105 are arranged from upstream to downstream.

  On the other hand, the floc in the suspension water flowing in the sedimentation separation tank 105 settles and separates by gravity sedimentation from the upstream side to the downstream side, so the floc concentration in the suspension flowing in the sedimentation separation tank 105 is upstream. It gradually decreases from the side toward the downstream side. The floc density also changes in the depth direction. In general, the shallower the water, the smaller the flock concentration, and the smaller the water depth, the smaller the flock concentration.

  Moreover, since an actual suspension is not an ideal suspension, mutual interference occurs between particles. Therefore, as the floc concentration increases, the interfering action between the flocs becomes stronger and the sedimentation of the flocs becomes slower.

In order to obtain a high-quality clear solution, all flocs must reach the bottom of the channel before the suspension reaches the outlet of the inclined channel. In addition, the sedimentation speed of floc needs to satisfy the relationship of (Equation 6). That is, it is necessary to change the flow velocity u ₀ of the suspension in the inclined channel or the height d of the inclined channel in accordance with the settling velocity w ₀ . On the other hand, if the flow rate of the suspension in the inclined flow path is decreased in accordance with the decrease in the sedimentation speed, there arises a problem that the processing capacity of the suspension separator is reduced.

Eventually, in order to efficiently obtain a high-quality clarified liquid, it is necessary to change the height of the inclined channel in accordance with the decrease in the sedimentation speed.
However, it has been difficult to optimally design and manufacture the heights of the inclined channels installed in the sedimentation separation tank.

  Also, the suspension concentration and flow rate may vary with time, such as during a flood. Also, in the factory wastewater treatment equipment, the amount and nature of the wastewater change due to changes in the products to be manufactured and the busyness of operations. In addition, in a portable inclined sedimentation separator that is temporarily installed at a civil engineering site, the properties of the suspension vary greatly depending on the installation location. In such a case, there is a demand for optimizing the height of the inclined channel.

  If the inclined channel assembly is modularized and a large number of modules with different inclined channel heights are prepared and the modules are replaced as necessary, the above-mentioned problems are solved somewhat. Considering the cost of manufacturing, storage and management, it was not a practical method.

  Therefore, the object of the present invention is to optimize the height of the inclined flow path according to the type of suspended substance to be treated, the concentration of the suspended liquid, the flow rate / flow velocity, and increase the efficiency of sedimentation and separation of suspended substances. An object of the present invention is to provide an inclined channel module that can be maintained and can easily change the height of the inclined channel.

  The first configuration of the inclined channel module according to the present invention is a tilted channel module that is set in a suspension separation tank, separates suspended substances from the suspension, and extracts a clarified liquid. The apparatus includes a plurality of inclined plates that are stacked and attached to the casing in a vertical direction to form a plurality of inclined flow paths, and includes a change mechanism that freely changes the height of the inclined flow paths. To do.

  According to this configuration, since the interval between the inclined plates can be freely changed, the inclined flow path height can be set in accordance with the floc settling speed or the ascending speed. For this reason, the efficiency of separation of suspended substances is improved.

  The second configuration of the inclined channel module according to the present invention is characterized in that, in addition to the first configuration, the inclined plate is connected via a bellows.

  According to this configuration, since the suspension in the inclined channel does not flow to other inclined channels, the efficiency of separation of suspended substances is improved.

  According to a third configuration of the inclined channel module according to the present invention, in addition to the first or second configuration, a hole is formed in a side plate of the housing, and a fastening means is inserted into the hole to arbitrarily use the inclined plate. It fixes to the said housing | casing with the height of.

  According to this configuration, since the interval between the inclined plates can be individually adjusted, the optimum inclined channel height can be set according to the water depth when the sedimentation speed or the rising speed of the flock changes depending on the water depth. . For this reason, the efficiency of separation of suspended substances is improved.

  A fourth configuration of the inclined channel module according to the present invention is characterized in that, in addition to the first configuration, a plurality of grooves are provided in the housing, and the inclined plate is inserted into and fixed to the arbitrary grooves. And

  According to this configuration, since the inclined channel height can be changed by increasing or decreasing the inclined plate or changing the position, an inclined channel module that is simple in structure and inexpensive can be realized.

  According to a fifth configuration of the inclined channel module of the present invention, in addition to the first to fourth configurations, a suction pipe connected to a terminal end of each inclined channel and the inclined channel flows into the inclined channel. A suction means for individually sucking and discharging the liquid from the suction pipe for each inclined flow path.

  According to this configuration, since the suction means for sucking and discharging the liquid flowing into the inclined flow path is provided for each inclined flow path, the suspension according to the floc settling speed or the rising speed of each inclined flow path is provided. The liquid flow rate can be set. For this reason, the efficiency of separation of suspended substances is further improved.

  As described above, according to the present invention, by changing the interval between the inclined plates, the height of the inclined channel can be set to a height corresponding to the settling speed or the rising speed of the floc. This has the effect of improving the efficiency of sedimentation separation.

  In addition, when the present invention is applied to a sewage treatment plant, even if the concentration and flow rate of the suspension fluctuate with time, such as during floods, Therefore, the suspended solids can be sufficiently removed regardless of fluctuations in the concentration and flow rate of the suspension, which greatly contributes to environmental conservation.

  In addition, when this invention is applied to a factory wastewater treatment device, even if the amount and nature of wastewater changes due to changes in the products to be manufactured and the busyness of operations, the height of the inclined flow path can be kept optimal according to the changes. Therefore, the suspended solids can be removed sufficiently, which greatly contributes to the purification of industrial wastewater.

  In addition, the nature of the muddy water generated at the site of civil engineering works greatly depending on the environment of the site, etc., but when this invention is applied to a portable inclined sedimentation separation device temporarily installed at the site of civil engineering work, Depending on the environment of the installation location, an optimized inclined sedimentation separator can be installed, which greatly contributes to the preservation of the surrounding environment such as civil engineering work sites.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  1A and 1B are external views of an inclined channel module according to Embodiment 1 of the present invention, where FIG. 1A is a front view and FIG. 1B is a side view. In FIG. 1, reference numeral 1 denotes an inclined channel module. The inclined channel module 1 is a module arranged in a sedimentation tank instead of the inclined plate assembly 106 of the inclined sedimentation apparatus 101 shown in FIG.

  The inclined channel module 1 includes a housing 2, a plurality of inclined plates 3, and a bellows 4 that connects the inclined plates 3 to each other.

  The housing 2 includes a bottom plate 21 and left and right side plates 22 and 23, and a long hole 24 extending in the height direction of the housing 2 is formed in the left and right side plates 22 and 23.

  The inclined plate 3 is fixed to the side plates 22 and 23 with bolts 31 and nuts 32. As the material of the inclined plate 3, an appropriate material can be selected from various metals, synthetic resins, or composite materials thereof according to the application. The shape of the inclined plate 13 is not limited to a flat plate. It may be a corrugated plate or may be provided with reinforcing ribs.

  The bolt 31 passes through the long holes 24 of the side plates 22 and 23, protrudes to the outside of the side plates 22 and 23, and is screwed to the nut 32 on the outside of the side plates 22 and 23. When the nut 32 is loosened, the bolt 31 can move up and down in the elongated hole 24, so that the inclined plate 3 can be moved in the height direction of the housing 2.

  In the present embodiment, as a fastening means for fixing the inclined plate 3 to the side plates 22 and 23 of the housing 2, the bolt 31 fixed to the inclined plate is tightened from the outside of the side plates 22 and 23 with the nut 32. The fastening means is not limited to this. For example, a screw hole may be formed in the side end of the inclined plate 3 and a bolt may be inserted from the outside of the side plates 22 and 23. Alternatively, fastening means other than screws (for example, a fastener using a wedge or a spring) may be used. Moreover, the hole which inserts a fastening means is not restricted to a long hole. A large number of round holes or square holes may be formed, and the fastening means may be inserted into holes having a desired height.

  FIG. 2 is a perspective view showing details of the inclined plate and the bellows of FIG. 1, and among the many inclined plates 3 and bellows 4 stacked one above the other, the two inclined plates 3 and the bellows 4 connecting them. It is the figure which took out and was seen from the upper right diagonally backward.

  The space between the two inclined plates 3 arranged at intervals in the vertical direction is closed by the bellows 4 on both side surfaces and the rear surface to form independent inclined channels. The rear surface of the bellows 4 is provided with an opening 41 for connecting a suction pipe (not shown). The suction pipe serves as a suction means (pump or the like) (not shown) for sucking and discharging the liquid in the inclined flow path at a desired flow rate. Connected. The liquid to be processed flows into the inclined channel from the front and is sucked and discharged from the opening 41. If the suction means is provided independently for each inclined channel, the flow velocity of the inclined channel can be adjusted independently. Note that two bolts 31 described above are implanted in each side end of the inclined plate 3.

  The bellows 4 is made of rubber or a flexible synthetic resin material, and has a crease so as to expand and contract in the vertical direction. Therefore, the interval between the two inclined plates 3 can be freely changed.

  3A and 3B are external views showing a state in which the interval between the inclined plates of the inclined channel module of FIG. 1 is narrowed, (a) is a front view, and (b) is a side view.

When the floc particle size or concentration in the liquid to be treated changes and the sedimentation speed of the floc decreases, the inclined channel module 1 is pulled up from the sedimentation separation tank, and the interval between the inclined plates 3 is narrowed. To do. Specifically, the nut 32 is loosened to make the inclined plate 3 movable in the vertical direction, the bellows 4 is contracted, the interval between the inclined plates 3 is narrowed, and the nut 32 is tightened again to fix the inclined plate 3. That's fine.

Although FIG. 3 shows an example in which the intervals between the plurality of inclined plates 3 are equal, the height of the inclined plate 3 can be arbitrarily determined. You may make it a space | interval wide as it goes to.
Further, if the interval between the inclined plates 3 is narrowed, the upper space of the housing 2 is vacant. Therefore, a group of inclined plates 3 connected by the bellows 4 may be separately prepared and additionally assembled to the space. .

  4A and 4B are side views of the inclined channel module according to the second embodiment of the present invention, in which FIG. 4A shows a state where the interval between the inclined plates is widened to increase the inclined channel height, and FIG. The state which narrowed the space | interval of an inclination board and lowered the inclination flow path height is shown. In FIG. 4, the casing and the bellows are omitted for convenience of explanation. In FIG. 4, reference numeral 1 'denotes an inclined channel module, which is configured by attaching a plurality of inclined plates 3' to a housing (not shown).

  Of the plurality of inclined plates 3 ′, the lowermost inclined plate 3 ′ is fixed to the casing, and the other inclined plates 3 ′ are guided by the casing so as to move only in the vertical direction in the figure. Movement in the direction of is restricted.

  The plurality of inclined plates 3 ′ are connected via a link 33. The link 33 is formed by combining a plurality of rods so as to be rotatable at each node to form a plurality of parallelograms, and constitutes a mechanism called “lazy tongs”.

  In this way, since the plurality of inclined plates 3 ′ are connected via the link 33, when the uppermost inclined plate 3 ′ of the plurality of inclined plates 3 ′ is moved up and down, another inclined plate 3 ′. Is also linked. Further, the intervals of all the inclined plates 3 'are increased or decreased while maintaining the same state by the action of the lazy tong mechanism. Therefore, as in the first embodiment, all the inclined plates 3 'can be fixed by making a long hole in the case and fixing only the uppermost inclined plate 3' to the case with bolts and nuts. can do. Therefore, the operation for changing the interval between the inclined plates 3 ′ is simplified.

  Alternatively, a mechanism may be employed in which the uppermost inclined plate 3 ′ is suspended from the upper part of the housing with a wire or the like, and the uppermost inclined plate 3 ′ is moved up and down by winding or lowering the wire or the like. . Alternatively, the uppermost inclined plate 3 ′ may be moved up and down by an actuator (for example, a hydraulic / barometric cylinder, a ball screw, a rack and pinion mechanism or the like).

  FIGS. 5A and 5B are external views of an inclined channel module showing Example 3 of the present invention, in which FIG. 5A is a front view and FIG. 5B is a side view. In FIG. 5, reference numeral 1 ″ denotes an inclined channel module, which includes a housing 2 ″ and a plurality of inclined plates 3 ″.

  The housing 2 "is composed of a bottom plate 21" and left and right side plates 22 ", 23", and the left and right side plates 22 ", 23" have a large number of grooves 25 arranged in the height direction of the housing 2 ". The width of the groove 25 is a size obtained by adding a slight margin to the thickness of the inclined plate 3 ″, and the inclined plate 3 ″ is inserted into the groove 25 from the front end of the housing and held.

  Since the inclined plate 3 ′ is inserted into the arbitrary groove 25, the attachment position of the inclined plate 3 ′ can be arbitrarily selected in units of the pitch of the groove 25. Further, the number of inclined plates 3 ′ attached to the housing 2 ′ can be arbitrarily selected. Accordingly, the interval between the inclined plates 3 ′ can be arbitrarily adjusted in pitch units of the grooves 25.

  The groove 25 can be formed by any method as long as the inclined plate 3 ″ is inserted and supported and fixed. The side plates 22 ″ and 23 ″ are cut and engraved to form the recess. Alternatively, various structures and work methods can be selected, such as attaching a large number of crosspieces to the side plates 22 ", 23".

  As described above, in the first to third embodiments, the inclined channel module used for sedimentation separation has been described. However, the present invention is not intended only for sedimentation separation, and if the slope of the inclined plate is reversed, Needless to say, it can be used as an inclined channel module for floating separation for separating suspended substances having a light specific gravity.

It is an external view of the inclined flow path module which concerns on Example 1 of this invention. It is a perspective view which shows the detail of the inclination board and bellows of FIG. It is an external view which shows the state which narrowed the space | interval of the inclination board of the inclination channel module of FIG. It is a side view of the inclination channel module concerning Example 2 of the present invention. It is a side view of the inclined flow path module which concerns on Example 3 of this invention. It is a figure showing the structure of the horizontal flow type inclination sedimentation separation apparatus which has arrange | positioned the assembly of a several multistage inclination board in multistage along the horizontal flow. It is sectional drawing showing the case where a suspension is made to pass through the flow path between the separation plates placed horizontally. It is sectional drawing showing the case where a suspension is made to pass through the flow path between the separating plates placed in inclination.

Explanation of symbols

1, 1 ', 1 "inclined channel module 2, 2' housing 21, 21" bottom plate 22, 22 "right side plate 23, 23" left side plate 24 long hole 25 groove 3, 3 ', 3 "inclined plate 31 bolt 32 Nut 33 Link

Claims (5)

In an inclined channel module that is set in a suspension separation tank and separates suspended substances from a suspension and extracts a clarified liquid, a casing and a plurality of stacks are attached to the casing in a vertical direction. An inclined channel module comprising a plurality of inclined plates forming an inclined channel and a change mechanism for freely changing the height of the inclined channel. The inclined channel module according to claim 1, wherein the inclined plates are connected via a bellows. The inclined flow according to claim 1 or 2, wherein a hole is made in a side plate of the casing, and a fastening means is inserted into the hole to fix the inclined plate to the casing at an arbitrary height. Road module. A housing, and a plurality of inclined plates that are stacked and attached to the housing in a vertical direction to form a plurality of inclined flow paths, the housing is provided with a plurality of grooves, and the inclined plate The inclined channel module according to claim 1, wherein the inclined channel module is fixed by being inserted into a groove. A suction pipe connected to the end of each inclined flow path; and suction means for individually sucking and discharging the liquid flowing into the inclined flow path from the suction pipe for each inclined flow path. The inclined channel module according to any one of claims 1 to 4, wherein the inclined channel module is provided.

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