JP2741197B2 - Liquid separation method and equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to, for example,
Liquid (or mud) containing grains, fibrous substances, glue
Liquid) or coagulation of sediment, sedimentation filtration, drainage, concentration, drainage
It is suitable for outgoing and transporting, and relates to simplification and high efficiency. (Prior art) In a filter using a filter medium, a cake is conventionally formed and the original cake is formed.
It was separated and taken out of the liquid. Therefore separated
Make sure that the undiluted solution and the cake do not come in contact with the place where the cake is peeled.
I was Pulsating to reduce the moisture content of the cake
There is also a filtration method that completes dehydration while crushing the cake. This
An example of this is shown in JP-B 32-6695. Buchner funnel type
There is also. If the filtration surface becomes blocked and the filtration resistance increases, switch the valve.
Backwash the filtrate back to the filtration surface to eliminate clogging,
The filter residue is removed as needed (Jikken 46-19809),
(Jikken 47-1505).
Using a filter membrane, backwashing for about 40-120 seconds when clogged
(Japanese Patent Laid-Open No. 55-34128)
There is one that has an over-pressing foot (actually open sho 53-87481). (Problems to be Solved by the Invention) In these filtration methods, fluid hydrates are sufficiently provided on the filtration surface.
Must be served and take out the cake
For this reason, the equipment was complicated and expensive. Liquidity
Although it is scarce, it has been difficult to automate filtration dehydration. Also set
Suitable for treating large amounts of waste liquid and waste mud due to relatively expensive equipment
Often have to transport goods with high water content.
This has hindered processing and disposal. Also, leave a small amount of muddy water untreated for work and environmental cleanup.
There was a problem from the point of view of the shift. When looking at conventional filtration methods technically, especially the slurry concentration
, The time required for cake removal increases,
Not only decreases the filter performance, but also
The disadvantage was that the speed was reduced. Even smaller granularity
If it is bentonite or clay mud, clogging is severe
Therefore, the dewatering cost was high. Poor sedimentation
It was rate. The present invention eliminates these disadvantages and has poor fluidity
The purpose is to easily dehydrate or dewater mud.
I do. (Means for Solving the Problem) The present invention provides a method for removing a liquid by suction and blowing a formed cake.
Filtration, dehydration (or
Liquid, the same shall apply hereinafter).
Performed in a state or position or / and vibration (eg
(For example, about 1 to 200 Herz)
Supplying, distributing, promoting filtration, peeling and discharging cake
Thus, the efficiency is improved by using the vibration together. dilute
Conventional suspensions exist in a thin layer on thick mud
Although the recovery was not easy, according to the present invention, the thick mud
Can be easily separated by suction with water. In that case, the cake layer
Since the formation is slow, the duration of the suction can be long.
If the suspension is fine, pass a small amount through the filter medium and mix with the filtrate.
However, it ignores this point and causes
There is one feature of Akira. The filtrate is separated by another filtration device (the device according to the invention).
If it is filtered, it hardly contains solid components.
High-speed filtration is now possible. Alternatively, it may be applied to a separate sedimentation device, and the concentration may be low and dry.
Sedimentation is fast because it is no longer sedimentation.
Become a part. The sediment separated here is returned and reprocessed.
It can be applied to well-known microfiltration, etc.
No. This is the cake layer or thin filter on which the invention is formed.
Even if it is a layer, regardless of the
Operable with as little particle leakage as possible
Has been found to be able to collect a high proportion of
It has become possible. Also, in the prior art, is there fluidity such as mud or sludge?
Dehydration of the poor was difficult. This is the filter media side
That it was difficult and difficult to distribute
This is for forming an obstructive cake. In the present invention, the filtration surface is placed downward on the
Suction and / or subject the workpiece to vibration
To prevent clogging by giving fluidity
Can be dehydrated. In the present invention, one cycle is a suction period of 2 seconds or more,
The period is the time required for cake peeling (almost instant, 0.01 seconds
Degree of suction)
10 seconds depending on the particle size distribution of the mold,
A length of about 40 seconds or less is appropriate. Including many solid components
For water mud, about 30 seconds is most suitable. This is
Valve operation with immersion or vacuum (or differential pressure) detector
Can be done with The ratio of the suction period and the blow period is the former
The larger, the shorter the cycle, the greater the ability. But the cycle
It is too short to reach a sufficient vacuum from the start of suction.
Conversely, as the percentage of dead time increases, the ability decreases. Reverse blow
Use gas or liquid to be separated
I do. Air is usually used as a gas because it is convenient and pressurized.
But use carbon dioxide or other gas to improve the filterability.
Is also good. Conventionally, if the liquid itself is used as the reverse blow fluid,
Although it was not used because it increases the liquid content of the key, in the present invention
High filtration capacity, and
Blowing in physical material and short blow time
Can be used due to the combined effect of
It is a thing. If mud is in the sedimentation tank, or
If so, the solid portion is less at the top. Filtration using the present invention
Float the body near the surface of the water and perform water separation with the filtration surface down.
If the flow resistance due to cake formation is small,
To increase the solid concentration and increase flow resistance
As the amount of water to be treated becomes smaller,
Greater water separation capacity. Conventional Buchner funnel-type filter
In excess, the reverse is true.
Is 1: 1.5 to 1:10. Depending on the conditions, the difference
Can be large. That is, whether it is economically established in the past
Wastewater treatment has become economical and effective use of by-products
This makes it possible to dispose of the chair in an advantageous manner. Suction upwards, diagonally upwards, or to the side
This is advantageous for separating the filter from the filter surface. This is the ratio of solids
When the weight is heavier than the liquid, for example muddy water such as earth and sand,
The sediment separates and new suspension is supplied to the filtration surface.
And Continue the separation operation when the filter is in place
And the cake is deposited at the bottom of it and the natural circulation stops
In this case, forced cake movement or removal is required,
Take out the cake container below or remove the cake
Scraping machine, belt conveyor, screw conveyor
Move using a vibrator or other means of transportation, or
Take out. The position of the filter can be automatically or manually shifted.
Movement may be performed. In this way, the solid matter is concentrated and dehydrated and becomes less fluid.
Cover the filter body
It is appropriate to let. If the liquidity is poor, shake
The fluidity can be given by the movement and fills the filtration surface.
It is effective for To apply vibration, if the tank is small and lightweight, install a vibrator in the tank.
Can be installed. Vibrating body (may be a plate or stick
) May be vibrated and brought into contact with the object to be processed. Ma
By attaching a vibrator to the filter itself,
Supply, desorption and dispersion of cake, and discharge. Filtration and backwash
Combined with short period of vibration is vacuum (or reduced pressure) filtration
To obtain a cake removal rate comparable to pressure filtration
Useful, this is the suction force (and the liquid column pressure, low pressure compression force)
May be added) or due to the gravitational and exciting forces
It is speculated that the particles are likely to approach the closest packed state.
It is. Separation between the filter surface and cake by backwashing
Surfaces, cracks in cakes, new workpieces are quickly supplied and new
Flow promotion by vibration is effective for forming a
You. These cannot be achieved by simple pressurization or pulsation. Also, suction from both sides of the cake does not change the suction phase on the opposite surface.
By doing so, the filtration speed can be increased. This
This is because the permeation resistance of the cake increases in the final stage of filtration,
When the vibration is applied to the filtration surface,
This is because the liquid easily remains on the opposite side. Install a filter at the bottom, and filter the liquid downward with the filtration surface facing upward.
In the case of suction, in the present invention, blowing is performed with gas, and only
By dividing the cake by increasing the stirring effect,
A passage for supplying the object to be filtered to the filtration surface can be opened,
Highly efficient dewatering can be continued. For the progress of liquid consolidation
Accordingly, the filter body can be pulled upward. In the present invention, it is more efficient that the cake is divided. this
When the cake becomes a large plate, suck it in a short cycle
Again, the cake is adsorbed on the filtration surface and interferes with the operation
It is. The present invention relates to a method for removing clay or base which has a low dehydration rate by a conventional filtration method.
Even in the case of tonton mud, efficiency is good. These are dehydrated
When tied, the baby nodules are hard to absorb water, so every time the cake is peeled off
This is because there is no need to pull out of the water. Conventional filtration method
Then I couldn't take advantage of this point. Conventionally, the filtration requirement is that fine particles do not leak into the filtrate.
However, in the present invention, leakage of a small amount of fine particles is inconvenient.
If so, re-filtration or re-sedimentation process or reuse process
By doing so, the efficiency was improved. In a settling pond with a large tank compared to the filter, a vibration trough is provided at the bottom.
To collect mud at the location of the filter.
Can be. For a relatively small device, the transport screen is located at the bottom of the tank.
To move the sludge or to move the dewatered cake and concentrated mud.
Movement, stirring and discharge can be performed. Skewers and
Agitating (or scraping) wings, rotating instead of vibrating equipment
Turntables, moving platforms, conveyors with lifting wings, etc.
Transfer (or ejection) means can be used. Discharge
The present invention is further applied to the later mud or sludge for processing.
When it is so effective. Book for pretreatment of other dehydrators
Use efficiency can be improved by using the invention. This
As described above, the present invention is easy to constitute alone or in combination.
It has certain advantages. Also, the present invention provides a pump having a filtering capability.
Can be configured as
It takes advantage of these advantages. Cake or fluid
Install a concentrated sludge discharge line that can separate
If it is configured to return to, sediments such as tanks, vessels and ponds, floating
Material or sludge can be taken out with high efficiency.
Can be easily purified. In this case, activated carbon or other water treatment
A filler may be filled. Treat kitchen disposer drainage or sludge
In this case, compression dehydration may be used in combination. Further processing staff or
Heating can be performed before and after that. Book before heating
It goes without saying that performing dehydration according to the invention saves heat.
not. Withstands sterilization at 50 ° C, especially 60 ° C or higher when heating
The composition of the material is possible and is achieved by a simple structure like the present invention.
Is done. After heating, the water evaporates and the dried cake becomes
To remove the residue, while evaporating water is
Or heat storage using a heat storage element (a latent heat storage element is convenient)
Then you can construct a system that is clean and does not lose heat. Next, the present invention will be described with reference to the drawings. The figure shows an example of a device suitable for carrying out the invention and
Is also easy. Fig. 1 shows the cross section of the filter body of the filtration device and the pipe system for operating it.
And a control system. Filtration surface is cylindrical as shown in Fig. 2.
(Or a part of a cylinder)
It may be another curved surface, a spherical surface, or another rotating curved surface
It may be hot. Also, planes, aggregates of planes, aggregates of curved surfaces
May be used. This is small, high capacity, new
Takes advantage of less installation space restrictions due to operation method and structure
Is what you do. Vacuum which may be on the suction side of the blower
Pump 11, compressor or blow 13 is a known one
Can be used, but a blower or
It is convenient to use a pump. High-performance self-priming pon
Pump or liquid ring vacuum pump (or
Blower, vacuum pump). The valve is a two-way valve
Or multi-way valve, used by solenoid valve, electric valve, pneumatic valve
it can. Use manual valves, orifices, or other
It can be simplified by using a lifting mechanism, a switching mechanism, and a check valve.
it can. The parts exemplified above are attached to the filter, or
If built-in, transportation and use are simplified. Such filtration equipment
There is no example. Filter media is filter cloth, non-woven fabric, perforated film, perforated plate, filler
Mentions, wire coils, thin slit grids are suitable,
In other words, something that is difficult is good. This can be easily selected by testing.
Can be. Material is synthetic polymer, glass, metal, ceramic
Materials selected from Tsuku etc. are suitable, but any conventional materials
It can be selected from the fee depending on the conditions of use. The most convenient timer is the so-called twin timer.
You. This system can be used alone, but the sequence circuit, flow rate
Optimal calculation control with manual or automatic control with measuring system
Becomes easier. This has a short operation cycle and is easy
It takes advantage of the features of the invention that can be modified. At a certain time
The length of one cycle and the time
Determines the ratio, for example, when using sequence control
Automatically switches between two or more twin timers
What is necessary is just to build a program that selects the combination that maximizes the amount.
This can also respond to changes in separation conditions,
Can be implemented by making a program that repeats the selection
You. In FIG. 1, when water containing suspended particles is sucked, the particles
The water is caught on the filter cloth surface and the water passes through the eyes of the filter medium,
Material 3 and filter plate 2 (floating body or liquid retaining part, filter body or
Formed between the tank wall and the lid wall)
Flow path (space formed by spacers, blowing of blow fluid)
Space formed by pipes or suction pipes, filter plate convex and concave, etc.
Through fabric processing or space with additional material as spacer)
Through a liquid collecting port 6 and a suction pipe 7 to enter a liquid retaining 9 for gas-liquid separation.
The gas phase is sucked by the suction pump 11 through the valves 10 and 20.
Released to the atmosphere. The filter plate may be a perforated plate,
May have a small number of holes. At the end of the suction period, valves 10 and 20
Is closed, the pneumatic valve 12 from 13 is opened, the liquid stopper 9, the suction pipe 7,
The compressed air flows through the liquid collection port 6 and the flow path 5 and is adsorbed on the filtration surface 19.
The cake 23 is peeled off by blowing. This is
Can be done almost instantly. Air pressure and filter cloth foot required
Can be provided separately by a cake divider.
The shortest possible time while preventing the
It is preferable for efficiency to enter the suction period again after blowing. Ke
Blow time is almost instantaneous, depending on the condition of peeling
So it can be practically continuous
Conventional liquid separation with little cake resistance
It becomes advantageous compared to the machine. Release valve 14 for liquid retaining 9 when blowing
Opens and releases liquid. Use the liquid level detector 18
For example, by providing valves 24, 25 and bypass 26
It is no longer necessary to exhaust the air inside 9
The power can be further increased. Valve 20 is suctioned at the beginning of suction by manual valve 21 or squeezing
Automatic opening / closing valve that adjusts the flow rate.
Alternatively, it may be a control valve. Liquid separation operation even if omitted
Can. 68 and 69 are vacuum control system and pressure control system respectively.
is there. These are useful for preventing particle leakage or filter media breakage
It is. 68 can be a suction and blow valve switching transmission system.
Use the volume of the conduit or filter instead of the liquid stopper 9
be able to. All or part of the space surrounded by the filter plate
Use for holding liquids, buoyant bodies or equipment
To make it compact and convenient for transportation and use
be able to. Vibrator 8 can be electromagnetic, electric, or pneumatically driven, as with valves.
No. Useful for fluidizing muddy water and mud mass with poor fluidity
Supply of material, close contact with the filtration surface, transfer of cake and cake,
It is effective for getting out. Vibrator with adjustable frequency and output
It is preferable to change according to the properties of the mud. Again
Continual use is convenient. Curving the filtration surface is vibration
Useful for power savings and weight savings. This reduces the weight of the filter plate
Not only possible, but also use tension of filter medium presser if convex
Can be used on the concave surface,
In any case, it is lightweight and strengthened. And blow resistance
To increase the strength, to blow uniformly and strongly, and to finish in a short time
It is advantageous. Put the filter body down and heavy muddy material on top
If you want to put a filter cake or mud,
It is easy to put aside. Large tanks or pits
In many cases, the side wall is also flat, and the side wall should have a filtering surface.
A flat filtering surface is also advantageous for the bonding. Of the present invention
For convenience, prepare both types and combine as necessary
Is most effective. Figure 2 shows a curved board
It is a three-dimensional figure in the case of comprising a filter body stretched on the surface. Axial direction
If there is no or small inclination in the bending direction when
It is preferable that only the bottom surface is a filtration surface from the viewpoint of cake peeling.
New When the inclination is large and the vibrator is a filter or filtration
When attached to a surface, both surfaces can be used as filtration surfaces.
FIG. 3 shows a filter body in which the leaves of a curved plate are erected and arranged. Filtration
Can be reinforced by body and side covers. cover
16 covers below the filter media 19, keeping the gap with the tank bottom
While sucking the object to be processed, or while applying vibration,
When the space between the filter plates is filled, the gap may be closed. Such treatment
The supply of physical material is provided by a closeable supply pipe (or supply port).
Can also be done. Fig. 4 shows the cross section of the filter leaf of Fig. 3.
An example is shown, but cylindrical filtration as shown in Fig. 5 (plan view)
It is the same as the cross section of a body arranged in plurals. 27 for reinforcement
It is also a liquid collection tube. The filter as shown in Fig. 5 is thick muddy water and mud
It is suitable for putting the filter surface inside from above. Mosquito
Those with bars 16 sink by suction. Cover
If you attach a vibrator 8 to something shallow or no,
It will be easy to get in and out. The height of the cylindrical filter is
May be lower. If the height is high,
When the water level drops, air may be sucked in.
Create compartments, aspirate each compartment, and inhale air
It is preferable to adopt a structure for stopping suction. FIG. 3, FIG.
The same applies to the examples shown in FIGS. FIG. 6 shows a filter body consisting of one cylinder, which is suctioned and liquid
Discharge and blow are performed by one rotary pump.
Show. Blowing uses pressurized water, but its own
Discharge pressure can be used. Water at this time is supplied from outside the filter.
It is appropriate to use water supply. The device in Fig. 6 is a small number
In the case of, it is suitable for treating small tank pits and sediment. Fig. 7 Filters both sides by making the board a curved surface with a gentle curvature
The surface is shown as inclined and assembled in a shelf shape. Vibrator and
By using air blow together, the release cake on both sides of the filtration surface can be removed.
You can drop it. Open side wall 32 and shake while blowing
Give movement and discharge. A large area filtration surface inside the small tank 31
Can accommodate. FIG. 8 shows a tank that can be lifted by a suspension ring 32.
An example in which a filtering surface is provided in 31 will be described. Next to turn 33
It has a side wall 32 that can be opened. Suspension in tank 31 by pump
The cake is stored by filtration and dewatering while supplying the tank, and the tank is filled.
Stop the liquid supply and increase the degree of dehydration. Vibration machine after dehydration
The side wall 32 is opened while driving the cake 8, and the cake is discharged. internal
Drives vibrator 8 when multi-tube type filter body prevents discharge
After lifting the filter using ring 37 while draining, discharge work
do. FIG. 9 is a plan view of FIG. Figure 10 shows a pong
This is an example of a filter body having a filter action. Figure 11 shows a cone or corner
It is a filter with a conical surface. The device is up and down as already mentioned
Can be used in reverse. However, liquid discharge position, blow
It is necessary to change the position. Both for easy switching
It is convenient to have a mechanism that can switch the exhaust port in advance.
is there. However, the device according to the present invention is different from the conventional filter.
It is easy to change the working posture, so it is easy to respond. Cone
For the pyramidal filtration unit, a plurality of small filtration units may be arranged. Fig. 12 shows a relatively large settling tank 40
Has feed tank 43 (vibration trough, screw, paddle, etc.)
1 shows a sedimentation or liquid separation device. Filter body 19 is 21 (floating body)
And supported by a depth-adjustable support 35.
You. Agglomeration of sediment produced by suction-blow
The cake pieces settle down and the hopper 45 of the unloader 44 below
And enters the receiver 53 from the exit 48. SCREW on unloader
When using the hopper, screw in the cylindrical case
It is convenient to provide a filter surface 19 on the surface. Filtering aid on filtration surface 19
(May be circulating coarse particles), coagulant supply pipe 36, or
With stirring or feeder 43 (may be the tip of 43)
You. 34 is a suction and blow system drive for the filter or filter surface.
Reference numeral 52 denotes a connection and control device. FIG. 13 shows a liquid separation tank having a movable wall 32 for removal.
The moving means 43 laterally moves the coagulum or cake 57 by the wings 60.
To the upper surface where the fluidity 58 with high water content is filtered.
To be introduced. The vibrator 8 is inserted into the bottom plate 63 and the side plate 31 in the tank.
Attached to the vibrating body 43
Helps to discharge mud and cake. 61 indicates an elastic material. (Example) Example 1 A piece of a plastic flat plate having a thickness of 9 mm and a diameter of 80 mm.
A stainless wire mesh of wire diameter 1mm, 5mm is fixed to the surface, 0.25mm thick
Gently attach a thin synthetic filter cloth at the end and draw a line on the surface.
1mm and 15mm diameter wire mesh doubles as filter cloth foot and cake divider
The filter body was attached. This was filtered as shown in FIG.
A small filtration device was assembled using it instead of a surface. Disk center
Open a 6mm diameter through hole and insert a suction tube with an outer diameter of 6mm.
And glued. Aspiration was used for suction. Thailand
The timer can be set from 1 to 3600 seconds for both ON time and OFF time
It was a twin timer. Flowable 66% water discharged from civil engineering
Clay mud (including silt and bentonite)
Take 200mL and blow time minimum (instantaneously, about 0.01 seconds), suction
The time was set to 60 seconds, and a dehydration operation was performed for 30 minutes. 50 mL of water
Released and the cake moisture was 41%. In 10 minutes of operation time
The water content was 46%. Example 2 The device of Example 1 was used in a Buchner funnel type
However, almost the same results as in Example 1 were obtained. Example 3 In Example 1, a layer of 100 mL of water was placed on the muddy water.
First, start the operation near the water surface, and when the water surface
Accordingly, the filtration surface is lowered, and the filter is floating on the surface of the sedimentation layer.
The same operation was performed. The water content at the 10th minute is 48%, and the water content of the cake after 30 minutes is Example 1.
Was the same as The results are the same even if turbid water is used instead of water.
It was the same. Example 4 In Example 2, the same operation as in Example 3 was performed.
Was. After 10 minutes operation, the mud is still fluid and after 30 minutes
Moisture was 46%. Example 5 In Example 4, the filtration surface was stirred with a stirring bar.
The turbid water in the upper layer was sucked in and the filtration speed increased.
It was recognized from the liquid volume. The water content after operation for 30 minutes is 44%
Was. Blow to increase filtration speed when not stirring
The time was increased to 2 seconds. Effective but causes mud blowing
Was. Example 6 Vibration was applied to the non-fluid mud mass obtained in each example.
It becomes fluid at the place of girder.
Water separation into the upper layer was observed. Example
Operation from above can easily separate this water. Control Example In the conventional filtration without blowing in Example 2, the same mud was applied.
As a result of the test used, the filtration speed up to the first 30 seconds
Relatively large, post-filtration volume drops sharply and mud with similar moisture content
It takes 4 ~ 10 culture aspiration time of the present invention to obtain a lump
Has become clear. This is improved by stirring
It was not done. In the present invention, the horizontal filtration surface is the same as in the above embodiment.
Results are obtained and taken out like a conventional
There is no need to scrape the keys. (Action) As described above, the thickness of the separated cake or the condensate increases.
Blow through the workpiece before the water resistance increases significantly.
And start a new filtration cycle with high efficiency.
Is repeated. Those that have separated will sink or float and accumulate,
Eliminated continuously or batchwise (or collected
). Give the sediment a stirring or vibration force to dehydrate
Encouraging replacement and contact with the filtration surface, even though it has become difficult to flow
High, despite peeling while contacting the liquid
Dehydration rate is reached quickly. This is similar to a conventional filter.
Even if you operate with, the cake is moved to another place every time
This is because time for transportation can be saved. Once the filtration chamber or filtration tank is filled with cake,
After breaking contact with the physical material, it is
it can. However, depending on the conditions and requirements of the liquid removal,
The process can be omitted. To increase the degree of drainage, remove the filter plate (or filter medium)
Movable holding or structure with reduced spacing, flexible structure
Alternatively, the material is effective. This is due to the progress of drainage
Cake volume shrinks, but deformation shrinks due to cake flow
Because it becomes difficult. Therefore, at least in one direction
Preferably, it can shrink. It expands the filter plate itself
It may be hot. On the other hand, forced sedimentation was performed at places where sedimentable particles were removed from the suspension,
The coagulation and solidification are performed simultaneously. More minutes
When returning the separated liquid to remove the sedimentable substance,
Acts as a water or liquid purifier and has a high capacity
You. In such a case, the amount of sediment is small, so the suction time may be longer.
It can be used as a clarifying filtration device. Therefore, the present invention
If the device is used twice or installed in series,
Fast clarification filtration becomes possible. Small devices can be used as pumps for liquids containing large amounts of sediment.
I can. Transfer cake by gravity or mechanical force with multiple filtration surfaces
What moves is equivalent to performing a multi-stage liquid removal operation.
You. (Effects of the Invention) The present invention is a simple operation and apparatus, and a liquid which has conventionally been expensive.
Separation or dewatering is performed at low cost.
Is sucked through the filter medium, and condensate or
Peel off the cake and quickly update the contact surface with the workpiece
Filter capacity to increase filtration capacity while lowering filtration resistance.
It has been increased in width. This is a timer suction valve,
Simple and reliable switching operation of the blow valve with relatively short cycle
It can be done without any skill,
An over-differential pressure detector or detection end can also be used. Combine these
If used, the optimal control becomes simple. Conventional use in this way
Expensive dewatering equipment (for example, automatic filter
S), instead of belt filters, etc. that are not suitable for the target object
Easy to use. Includes a simple filter of the projection type
This includes conventionally cumbersome sediments.
Liquid and slurry transport, stabilized mud in civil engineering work, waste
Mud treatment, sewage and puddle, kitchen disposer drainage
It is difficult to implement because of the high cost of conventional dehydrators such as treatment
Enables processing of what was done. In addition, the land area of the equipment is limited as in the case of sedimentation and natural drying.
Replace or replace treatment methods that have become widely inefficient
It can be used for efficiency as an aid.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1, 4, 6, 7, 8, 10, 11, 12 and 13 are longitudinal sectional views of the apparatus, FIGS.
The figure is a plan view. DESCRIPTION OF SYMBOLS 1 ... Filter body, 2 ... Filter plate, 3 ... Filter medium, 7 ... Suction tube or blow tube, 11 ... Vacuum pump or ejector, discharge pump, 65 ... Flange or screw.

Claims (1)

(57) [Claims] When performing suction filtration or dewatering of muddy water or muddy substances using a thin filter medium, vibrating the object to be processed,
A liquid separation method comprising repeating cake removal by suction and blowing alternately and in a short cycle while contacting an object to be processed, and performing filtration or dewatering while moving the cake layer formed. 2. Muddy water or mud is a suspension of inorganic or organic particles,
The liquid separation method according to claim 1, wherein the liquid separation method is mud or sludge. 3. 2. The liquid separation method according to claim 1, wherein the vibration of the object is temporarily or continuously performed by one or a combination selected from a filter, a container, and a vibrator. 4. 3. The liquid separation method according to claim 2, wherein the filter is floated or held on the surface of the object to be treated and sucked. 5. 3. The liquid separation method according to claim 2, wherein the filter body is automatically or manually fed into, and floated or moved into, an object to be treated at a location selected from a tank, a pond, a lake or a waterway. 6. A thin or thin suction side flow path filter body, a vibration device, a flow path switching valve, and a valve switching timer in which a spacer is arranged between a thin filtration surface having a cake dividing part also serving as a surface holding member and a thin plate-like surface. Filtration or drainage device consisting of a circuit. 7. A tank having an inclined tank or an inclined bottom, a vibration mechanism attached to a vibrating body at the tank or the tank bottom, a filter of the same type or a different type arranged at a plurality of locations and individually controlled, and provided at the bottom or side surface 7. The filtering or dewatering device according to claim 6, comprising a tank comprising a door. 8. 7. The filtration or dewatering device according to claim 6, wherein a float is not attached to or attached to the filter.