JP3347693B2 - Filtration device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross-flow type microfiltration or ultrafiltration apparatus which performs filtration while circulating an undiluted solution, or a whole filtration type which performs filtration without circulating an undiluted solution.

[0002]

2. Description of the Related Art A configuration of an example of a conventional filtering apparatus for purifying a large amount by a cross-flow type microfiltration or ultrafiltration apparatus using river water, lake water, groundwater or seawater as a stock solution will be described with reference to FIG. I do. In FIG. 14, the stock solution stored in a stock solution tank (not shown)
Filtration membrane module 10 composed of cross-flow type hollow fiber membranes connected in parallel by 101a and 101b, respectively.
After being supplied to the filtration membrane modules 10a and 102b, respectively,
The filtrate filtered through the inside of the hollow fiber membranes 2a and 102b from the outside to the inside flows through the inside of the hollow fiber membranes and is stored in a filtrate tank (not shown).

On the other hand, a part of the stock solution supplied to the filtration membrane modules 102a and 102b flows outside the hollow fiber membranes of the filtration membrane modules 102a and 102b as a circulating stock solution and is guided to a stock solution return pipe (not shown). Return to the stock solution tank.

[0004] Further, in order to remove suspended substances accumulated in the filtration membranes of the filtration membrane modules 102a and 102b, a backwashing device is provided, and the filtrate once stored in a filtrate tank (not shown) is backwashed. By operating the pumps 103a and 103b, the filtrate flows through the backwash pipe and is led to the filtrate pipe. The filtrate flows back inside the hollow fiber membranes of the filtration membrane modules 102a and 102b, and the backwash pumps 103a and 103b cause the filtrate to flow backward. When a predetermined pressure is applied, the filtrate is filtered by the filtration membrane modules 102a and 102b.
The suspended matter accumulated on the outer surfaces of the hollow fiber membranes of the filtration membrane modules 102a and 102b is physically peeled off by transmitting from the inside to the outside of the hollow fiber membranes.

Reference numeral 104 denotes a chemical tank for storing a chemical for cleaning such as NaClO (sodium hypochlorite) mixed with the filtrate supplied to the filtration membrane modules 102a and 102b by the backwash pumps 103a and 103b during the backwash. Numeral 105 denotes a chemical pump for injecting the chemical for cleaning from the chemical tank 104 into the backwash pipe.

[0006] In addition, N is added to the filtration membrane modules 102a and 102b.
A chemical supply device is provided for supplying a cleaning chemical such as aOH (sodium hydroxide), citric acid, oxalic acid, nitric acid, and hydrochloric acid. The chemical stored in the chemical tank 106 is filtered by a chemical pump 107. Membrane modules 102a, 102b
Is supplied and washed.

A pressure gauge for measuring the pressure of each of the stock solution supplied by the stock solution supply pumps 101a and 101b, the filtrate supplied by the backwash pumps 103a and 103b, and the chemical solution supplied by the chemical solution pumps 105 and 107, and measures the flow rate. The information detected by the flow meter, thermometer for measuring temperature, etc.
The control panel 108 controls the pressure regulator for adjusting the pressure, the flow regulator for adjusting the flow rate, the on-off valve and the like as appropriate to adjust the flow conditions of each liquid.

Power control of the stock solution supply pumps 101a and 101b, the backwash pumps 103a and 103b, the chemical solution pumps 105 and 107, etc. is also controlled by the control panel 108 collectively.

In the above-mentioned conventional filtration apparatus, the overall layout and specifications are individually designed in accordance with the desired performance.
101a, 101b, backwash pumps 103a, 103b, chemical pump 10
The height according to the pumping output of 5,107, the flow path resistance of each pipeline, and the like are calculated and set.

[0010]

However, in the above-described conventional example, since the entire layout and standards are individually designed according to the target performance, the entire design is started again from the beginning according to the layout. However, there is a problem that most of the existing devices must be disassembled and eliminated to newly design and implement.

When the number of filtration membrane modules 102a and 102b is increased in order to improve the filtration performance, it is necessary to design the whole again from the beginning, and the pressure of the undiluted solution, the filtrate, the chemical, etc. Control of flow conditions such as flow rate and temperature;
Stock solution supply pumps 101a, 101b, backwash pumps 103a, 103
b) There is a problem that since the power control of the chemical pump 105 and the like is performed by a single control panel 108, most of the existing devices including the control panel 108 must be disassembled and eliminated to newly design and construct .

The present invention has been made to solve the above problems, and
The purpose of the filter device is to configure the filter device as an independent unit for each element of the filter device, and to connect each unit to form the filter device, thereby facilitating layout changes and expansion. Is to be provided.

[0013]

To achieve the above object, a filtration apparatus according to the present invention is of a cross-flow type that performs filtration while circulating a stock solution or a total filtration type that performs filtration without circulating a stock solution. In a filtration or ultrafiltration apparatus, a stock solution supply unit having a stock solution supply pump for feeding a stock solution, a filtration membrane unit having a filtration membrane that circulates the stock solution and performs filtration, and supplies a filtrate to the filtration membrane A backwash unit having a backwash pump, a washing unit having a chemical solution pump for supplying a chemical solution for washing to the filtration membrane, a stock solution supplied by the stock solution supply pump, supplied by the backwash pump. Control means for adjusting flow conditions such as pressure, flow rate, and temperature of at least one of the filtrate and the chemical supplied by the chemical pump. The units are each configured as an independent unit, and the necessary units are appropriately selected from the stock solution supply unit, the filtration membrane unit, the backwash unit, the washing unit, and the control unit according to the application. The connected and selected units are configured such that they can be connected in combination of one or more as necessary.

According to the above construction, the stock solution supply unit, the filtration membrane unit, the backwashing unit, the washing unit, and the control unit are configured as independent units.
By configuring the filtration device by connecting each unit, it is possible to easily change the layout or add more.

A flow condition control unit for controlling adjusting means for adjusting flow conditions such as pressure, flow rate, and temperature of at least one of the stock solution, the filtrate, and the chemical solution; the stock solution supply pump and the backwash pump; When the power control unit for controlling at least one of the chemical liquid pumps is configured as an independent control unit, the stock solution supply unit, the filtration membrane unit, the backwash It can be used in combination with a unit, a washing unit, and a control unit as appropriate, so that layout change and expansion can be easily performed.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a filter device according to an embodiment of the present invention. FIG. 1 is a plan view showing a configuration of a filtering device according to the present invention, FIG. 2 is a diagram showing a configuration of a piping and a control system of the filtering device according to the present invention, and FIG. 3 is a control system block diagram of the filtering device according to the present invention. FIG. 4 is a front view showing a state where the control unit and the filtration membrane unit are connected.

FIG. 5 is a plan view showing the configuration of the stock solution supply unit, FIG. 6A is a front view showing the configuration of the control unit, FIG. 6B is a plan view showing the configuration of the control unit, and FIG. FIG. 6C is a left side view showing the configuration of the control unit, and FIG. 6D is a right side view showing the configuration of the control unit.

FIG. 7A is a front view showing the configuration of the filtration membrane unit, FIG. 7B is a left side view showing the configuration of the filtration membrane unit, and FIG. 8A is the configuration of the filtration membrane unit. FIG. 8B is a plan view of FIG.
Is a plan view showing the structure of the backwashing unit, FIG. 10 is a plan view showing the structure of the washing unit, FIG. 11 is a perspective explanatory view showing the structure of the connecting means, and FIGS. FIG. 3 is a plan view showing a configuration.

In FIGS. 1 and 2, reference numeral 1 denotes a cross-flow type filtration device for performing filtration while circulating the undiluted solution, and a filtration membrane module 2 suitable for microfiltration or ultrafiltration depending on the filtration accuracy. Apply

In this embodiment, an example of a cross-flow type filtration device that performs filtration while circulating the undiluted solution will be described. However, as another configuration, all the undiluted solution supplied without circulating the undiluted solution is passed through a filtration membrane. It may be applied to an all-filtration type filtration device that performs filtration by permeation, or a plurality of hollow fiber membranes may be used instead of the cartridge type filtration membrane module 2 in which one hollow fiber membrane is accommodated in one case. The present invention may be applied to a tank-type filtration device housed in one tank.

The filtration device 1 includes a stock solution supply unit 4 having a stock solution supply pump 3 for feeding stock solution, a filtration membrane unit 5 having a filtration membrane module 2 for circulating the stock solution and performing filtration, and a filtration membrane module 2 Backwashing unit 7 having a backwashing pump 6 for supplying a filtrate to the filter, cleaning unit 9 having a chemicals pump 8 for supplying a chemical solution for cleaning to the filtration membrane module 2, and a stock solution supply pump 3 A control unit 10 having adjusting means for adjusting flow conditions such as pressure, flow rate, temperature and the like of the supplied undiluted solution, the filtrate supplied by the backwash pump 6, and the chemical supplied by the chemical pump 8 is individually provided. It is configured as an independent unit.

Then, necessary units are appropriately selected and connected from the stock solution supply unit 4, the filtration membrane unit 5, the backwash unit 7, the washing unit 9, and the control unit 10 according to the application, and the selected unit is The configuration is such that one or a plurality of them can be connected as needed.

As shown in FIGS. 2 and 3, the control unit 10 controls the pressure of the undiluted solution, the filtrate, and the chemical solution.
A flow condition control unit 11 that controls adjusting means for adjusting flow conditions such as a flow rate and a temperature, and a power control unit 12 that controls the stock solution supply pump 3, the backwash pump 6, and the chemical solution pump 8 are individually and independently provided. It is configured as a control unit.

In the stock solution supply unit 4, as shown in FIGS. 2 and 5, a stock solution controlled by a power panel B1 from a stock solution tank 38 storing a stock solution such as river water, lake water, groundwater or seawater to be filtered. The stock solution is supplied to the control unit 10 by the supply pump 3.

As shown in FIGS. 2 and 6, the control unit 10 has a stock solution pressure sensor 13 for measuring the pressure of the stock solution supplied by the stock solution supply pump 3, and a stock solution flow control valve for controlling and adjusting the flow rate of the stock solution. 14. A temperature sensor 15 for measuring the temperature of the stock solution is provided.

The control unit 10 has a filtrate pressure sensor 16 for measuring the pressure of the filtrate, a filtrate flow rate sensor 17 for measuring the flow rate of the filtrate, and a filtrate flow rate control for controlling and adjusting the flow rate of the filtrate. A valve 18 is provided.

In the control unit 10, a chemical solution supplied from the chemical solution tank 23 by the chemical solution pump 8 is introduced into the undiluted solution piping 20 upstream of the filtration membrane unit 5.
And a chemical liquid return on / off valve 25 for opening and closing a chemical liquid return pipe 24 returning from the filtrate pipe 22 to the chemical tank 23 downstream of the filtration membrane unit 5.

The control unit 10 also includes a backwashing filtrate flow control valve 29 for controlling and adjusting the flow rate of the filtrate supplied from the filtrate tank 39 to the filtrate pipe 22 by the backwash pump 6, and an air bubbling. An air opening / closing valve that opens and closes an air pipe 26 that guides air to be performed to the filtration membrane unit 5
27, a drainage flow control valve 28 for draining from the undiluted pipe 20, a drainage flow control valve 3 for adjusting the drainage flow from the undiluted return pipe 30
1, a return concentrate on-off valve 32 for opening and closing the return concentrate which is guided from the concentrate return pipe 30 to the concentrate tank 38, and a return concentrate pressure sensor 36 for measuring the pressure of the return concentrate flowing through the concentrate return pipe 30
There is provided an adjusting means for adjusting flow conditions such as pressure, flow rate, temperature, etc. of a stock solution, a filtrate, a chemical solution, and the like.

Further, the control unit 10 is provided with a local control panel A1. Detection information detected by the various sensors provided in the control unit 10 is transmitted from the local control panel A1 to the main control panel M. Then, it is displayed on the display unit 37 also serving as a touch panel of the main control panel M.

The local control panel A1 operates the various flow control valves and the on-off valves provided in the control unit 10 according to control information instructed from the main control panel M. control unit
The undiluted solution whose flow conditions such as pressure, flow rate and temperature are adjusted by 10 is supplied to the filtration membrane unit 5.

As shown in FIG. 2, FIG. 4, FIG. 7, and FIG. 8, the filtration membrane unit 5 of the present embodiment comprises a plurality of filtration membrane modules 2 each composed of a cross-flow type hollow fiber membrane in a stock solution pipe 20. The undiluted solution supplied to the filtration membrane module 2 through the undiluted solution pipe 20 through the undiluted solution pipe 20 is given a predetermined pressure by the action of the undiluted solution supply pump 3 controlled by the power panel B1, and the filtration membrane is filtered. The filtrate is filtered by permeating from the outside to the inside of the hollow fiber membrane of the module 2, and the filtrate filtered by the filtration membrane module 2 flows through the inside of the hollow fiber membrane and is led to the filtrate pipe 22, and the filtrate tank
Stored at 39.

On the other hand, a part of the stock solution supplied to the filtration membrane module 2 through the stock solution pipe 20 circulates outside the hollow fiber membrane of the filtration membrane module 2 as a circulating stock solution, and is guided to the stock solution return pipe 30. It returns to the stock solution tank 38.

As another configuration of the filtration membrane module 2, the undiluted solution supplied to the filtration membrane module 2 through the undiluted solution pipe 20 is filtered by passing from the inside to the outside of the hollow fiber membrane. The filtrate filtered by the filter 2 flows through the outside of the hollow fiber membrane, is led to the filtrate pipe 22, is stored in the filtrate tank 39, and is supplied to the filtration membrane module 2 through the concentrate pipe 20. A configuration may be adopted in which the part circulates inside the hollow fiber membrane of the filtration membrane module 2 as a circulation return stock solution, is guided to the stock solution return pipe 30, and returns to the stock solution tank.

As shown in FIGS. 2 and 9, the backwashing unit 7 for physically flushing out and removing suspended substances accumulated in the filtration membrane of the filtration membrane module 2 is a filter stored in a filtrate tank 39. The liquid is supplied to the filtrate pipe 22 by the backwash pump 6 controlled by the power panel C1.

At this time, the filtrate flows back inside the hollow fiber membrane of the filtration membrane module 2 and a predetermined pressure is applied by the backwash pump 6 so that the filtrate flows from the inside of the hollow fiber membrane of the filtration membrane module 2. The suspended matter accumulated on the outer surface of the hollow fiber membrane of the filtration membrane module 2 is physically separated by permeating to the outside.

Reference numeral 33 denotes NaClO mixed with the filtrate supplied to the filtration membrane module 2 by the backwash pump 6 during backwashing.
A chemical tank for storing a chemical for cleaning such as (sodium hypochlorite), etc., and a chemical 34 controlled by a power panel C1 for injecting the chemical for cleaning from the chemical tank 33 to the backwash pipe 35. It is a pump. The backwashing step by the backwashing unit 7 is performed relatively daily at a rate of about 10 seconds to 5 minutes once every 10 minutes to 2 hours.

The washing unit 9 for chemically decomposing and removing suspended substances accumulated in the filtration membrane of the filtration membrane module 2 by a chemical solution is stored in a chemical solution tank 23 as shown in FIGS. Cleaning chemicals such as NaOH (sodium hydroxide), citric acid, oxalic acid, nitric acid, and hydrochloric acid are supplied from the chemical liquid pipe 21 to the undiluted liquid pipe 20 by the chemical liquid pump 8 controlled by the power panel D1.

In the washing step by the washing unit 9, the filtration device 1 is once stopped, and the inside of the filtration membrane module 2 and various pipes are washed with water, and then the above-mentioned washing with the chemical is performed. At this time, a low pressure is applied by the chemical liquid pump 8, and the chemical liquid comes into contact with the hollow fiber membrane of the filtration membrane module 2, and the suspended substance accumulated in the hollow fiber membrane is chemically decomposed.

Next, rinsing by water washing is performed. At this time,
The suspended substance that has been chemically decomposed flows through the outside of the hollow fiber membrane, is washed away, and is drained.

Here, when passing through the inside of the hollow fiber membrane of the filtration membrane module 2 from the outside, the chemical solution is filtered, and only the filtrate flows through the inside of the hollow fiber membrane of the filtration membrane module 2.

The cleaning by the cleaning unit 9 is performed by microfiltration (M
F) When a membrane module and an ultrafiltration (UF) membrane module are used, they are used relatively frequently because they are performed once every several months to one year.

Washing by air bubbling performed with the undiluted solution applied to the filtration membrane module 2 is performed for 10 minutes to 3 minutes.
It is performed once a day for about 10 seconds to 5 minutes.

Since the viscosity of the undiluted solution, the filtrate, the chemical, and the like changes depending on the temperature, the flow rate may change due to the temperature difference due to season, weather, and the like. Therefore, a heater for adjusting the temperature of the stock solution, the filtrate, the chemical, or the like according to the temperature information of the stock, the filtrate, the chemical, or the like flowing through the stock pipe 20 detected by the temperature sensor 15 may be provided.

In the present embodiment, as shown in FIGS. 2 and 3, the local control panel A1 provided in the control unit 10 controls the flow conditions such as the pressure, flow rate, and temperature of the undiluted solution, filtrate, chemical solution or air. While controlling and adjusting, the stock solution supply pump 3 is controlled by a power panel B1 provided in the stock solution supply unit 4, the backwash pump 6 is controlled by a power panel C1 provided in the backwash unit 7,
The chemical pump 8 is a power panel provided in the cleaning unit 9.
The flow condition control unit 11 and the power control unit are controlled by D1.
12 are configured as individually independent control units.

Here, the stock solution supply unit 4 and the control unit 10 are added in accordance with the addition of the filtration membrane unit 5, and the local control panels A1, A2,
... An, power panels B1, B2, ... Bn are also added.

For example, if the number of filtration membrane units 5 is about five, one backwashing unit 7 and one washing unit 9 may be used in a switching manner, but five filtration membrane units 5 may be used. In the above case, the switching operation is troublesome, so that the backwashing unit 7 and the washing unit 9 are also increased in accordance with the addition of the filtration membrane unit 5, and the power panels C1, C2,. Panels D1, D2, ... Dn are also added. When one backwashing unit 7 and one washing unit 9 are used in a switching manner, the number of filtration membrane units 5 may be other than five depending on each design.

The output of the stock solution supply pump 3, the backwash pump 6, and the chemical solution pumps 8 and 34 is adjusted by adjusting the power panels B1, B2, and B2 provided in the stock solution supply unit 4, the backwash unit 7, and the washing unit 9, respectively. , Bn, power panels C1, C2,... Cn, and power panels D1, D2,... Dn, by changing the frequency of the applied voltage applied to the three-phase AC motor that is the driving source of each pump. This is done by changing the rotation speed of the motor.

For example, in a filtration operation state in which the undiluted solution is filtered, the flow rate of the filtrate flowing through the filtrate pipe 22 is detected by the filtrate flow sensor 17, and this detection information is transmitted via the local control panel A 1 of the control unit 10. The data is sent to the main control panel M, and is stored as needed in a memory provided in the main control panel M.

The stock solution supply pump 3 is controlled by a CPU (Central Processing Unit) provided in the main control panel M in accordance with a control program stored in a memory in advance.
Is transmitted to the power panel B1 provided in the stock supply unit 4 via the local control panel A1 of the control unit 10, and the output of the stock pump 3 is adjusted by the inverter provided in the power panel B1. Thus, the flow rate of the filtrate flowing through the filtrate pipe 22 is maintained constant.

Similarly, the drive information of the backwash pump 6 and the chemical solution pump 34 of the backwash unit 7 is also transmitted from the main control panel M to the local control panel A1 provided in the control unit 10 and the power panel B1 provided in the stock solution supply unit 4. Are sequentially sent to the power panel C1 provided in the backwash unit 7 and the inverter provided in the power panel C1 adjusts the output of the backwash pump 6 and the chemical solution pump 34, thereby filtering at the time of backwash. The flow rate of the liquid or the chemical is controlled.

Similarly, the drive information of the chemical pump 8 of the cleaning unit 9 is transmitted from the main control panel M to the local control panel A1 provided in the control unit 10 and the power panel B provided in the stock solution supply unit 4.
1. The power is supplied to the power panel D1 provided in the washing unit 9 via the power panel C1 provided in the backwash unit 7 in order, and the output of the chemical pump 8 is adjusted by the inverter provided in the power panel D1. This controls the flow rate of the chemical during cleaning.

The control system shown in FIG. 2 is an example in which a main control panel M, a local control panel A1, a power panel B1, a power panel C1, and a power panel D1 are sequentially linked.

FIG. 11 shows connection means for easily connecting the individual pipes of the undiluted solution supply unit 4, the filtration membrane unit 5, the backwash unit 7, the washing unit 9, the control unit 10 and the like as described above. And a pair of housings 42, 43 and pipes 44, 45 to be connected.
It has a rubber ring 46 and the like interposed therebetween.

The outer peripheral surfaces of the ends of the tubes 44, 45
Convex portions 44a, 45a which can be engaged with tapered surfaces 47 provided on both inner peripheral portions of 43 are formed. A rubber ring 46 is interposed between tubes 44, 45, and tapered surfaces of housings 42, 43 are formed. 47 tube
The housing 4 is engaged with the projections 44a, 45a of the housing 44, 45.
Bolt holes 42 provided in flange portions 42a, 43a of 2, 43
b and 43b, and insert a bolt 48 into the bolt 48 and a nut 49.
The housings 42 and 43 are tapered by screwing
The convex portions 44a, 45a of the tubes 44, 45 move in the direction of approach along the tube 47, and the end surfaces of the tubes 44, 45 are pressed against the both side surfaces of the rib 46a projecting from the inner wall surface of the rubber ring 46. , 45 are connected in a watertight or airtight manner via a rubber ring 46.

The bolt 48 has a hexagonal locking portion 48b for rotation prevention formed in two steps inside a hexagonal head portion 48a for tightening, and a bolt hole formed of a long hole formed in the flange portion 43a of the housing 43. A hexagonal locking portion 48b is fitted and locked on the short diameter side of 43b to prevent the rotation of the bolt 48, and the nut 49 is bolted.
Prevents the bolt 48 from rotating together when tightening to 48.

In addition, instead of the convex portions 44a, 45a of the tubes 44, 45, concave portions which can be engaged with the tapered surfaces 47 of the housings 42, 43 are formed by tube 4.
4 and 45, with the rubber ring 46 interposed and the tapered surfaces 47 of the housings 42 and 43 engaged with the recesses.
Bolt holes 42 provided in flange portions 42a, 43a of 42, 43
b, 43b, and insert a bolt 49 into the bolt 48.
May be screwed, fastened and connected.

The connection between the pipes is made by the joint member described above.
If connection is made using 41, the deflection of the piping will be
To some extent because it is easy to route piping in a narrow space, and oblique piping design and the like can be performed, so that connecting pipes and joints can be reduced, and the joint members 41 are attached to connect the piping. The workability at the time is also good and efficient.

Instead of the joint member 41, the pipes may be connected to each other by a conventional configuration in which flanges provided at the pipe ends are brought into contact with each other and bolted at a plurality of locations.

FIGS. 12 and 13 show an example in which the stock solution supply unit 4, the filtration membrane unit 5, the backwash unit 7, the washing unit 9 and the control unit 10 are arranged in various numbers and in various layouts.

According to the above configuration, the stock solution supply unit 4,
Filtration membrane unit 5, backwash unit 7, washing unit 9,
By configuring the control unit 10 as an independent unit and connecting the respective units to configure the filtration device 1, it is possible to easily change the layout or add an additional unit. Can be replaced and maintained.

A control unit 10 controls a flow condition controller 11 for controlling adjusting means for controlling flow conditions such as pressure, flow rate, and temperature of a stock solution, a filtrate, and a chemical solution, a stock solution supply pump 3, a backwash pump 6, Since the power control unit 12 for controlling the chemical liquid pump 8 and the like are each configured as an independent control unit, the stock solution supply unit 4, the filtration membrane unit 5, the backwash unit 7, the cleaning unit It can be used in combination with the unit 9 and the control unit 10 as appropriate, and the layout can be easily changed or added.

Further, the stock solution supply pump 3, the backwash pump 6,
Since the pumping output of each pump such as the chemical liquid pump 8 changes depending on the installation height, it is not easy to change the layout from an existing design to a place having a different height as in the conventional example. Power control unit 12 for controlling pumps such as stock solution supply pump 3, backwash pump 6, and chemical solution pump 8.
Unit is made independent from the distribution condition control unit 11, so that even if the layout is changed to a place with a different height, it can be controlled by changing to a unit with different performance for each unit. And the filtering device 1 can be hierarchized for each unit.

Further, as in the conventional example shown in FIG. 14 and described above, a single control panel 108 controls the flow conditions such as the pressure, flow rate, and temperature of the stock solution, the filtrate, and the chemical solution, and controls the stock solution supply pump.
101a, 101b, backwash pumps 103a, 103b, chemical pump 10
When the power control of 5,107 and the like is controlled collectively, electric cables and the like must be individually routed from various parts of the filter device having a relatively large installation area to the control panel 108, so that the drawing operation is complicated and the There were many cables.

However, in this embodiment, the flow condition control unit 11 for controlling the adjusting means for adjusting the flow conditions such as the pressure, flow rate and temperature of the stock solution, the filtrate and the chemical solution, the stock solution supply pump 3 and the backwash pump 6 Since the power control unit 12 for controlling the chemical liquid pump 8 and the power control unit 12 are individually configured as independent control units, it is only necessary to route electric cables and the like between the control units, and the routing work is easy, and The number can be reduced.

Further, a stock solution supply unit 4 which is always used,
The filtration membrane unit 5, the backwash unit 7, and the control unit 10 can be set as a set unit, and the less frequently used washing unit 9 can be sold separately as an optional unit. Furthermore, the less frequently used washing unit 9 can be rented. Thus, the burden on equipment costs and maintenance and inspection can be reduced.

[0066]

Since the present invention has the above-described structure and operation, the stock solution supply unit, the filtration membrane unit, the backwash unit, the washing unit, and the control unit are configured as individually independent units. By configuring the filtration device by connecting the devices, it is possible to easily change the layout or add a new one.

A flow condition control unit for controlling adjusting means for adjusting flow conditions such as pressure, flow rate and temperature of at least one of the stock solution, the filtrate and the chemical solution, a stock solution supply pump, a backwash pump and a stock solution When the power control unit for controlling at least one of the pumps is configured as an independent control unit, the stock solution supply unit, the filtration membrane unit, the backwash unit, and the cleaning unit are separately provided for each of the independent control units. It can be used in combination with a unit and a control unit as appropriate, and the layout can be easily changed or added.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of a filtration device according to the present invention.

FIG. 2 is a diagram showing a configuration of a piping and a control system of the filtration device according to the present invention.

FIG. 3 is a control system block diagram of the filtration device according to the present invention.

FIG. 4 is a front view showing a state where a control unit and a filtration membrane unit are connected.

FIG. 5 is a plan view showing a configuration of a stock solution supply unit.

6A is a front view showing the configuration of the control unit, FIG. 6B is a plan view showing the configuration of the control unit, FIG. 6C is a left side view showing the configuration of the control unit, and FIG. It is a right view which shows the structure of.

FIG. 7A is a front view showing a configuration of a filtration membrane unit,
(B) is a left side view showing the configuration of the filtration membrane unit.

FIG. 8A is a plan view showing a configuration of a filtration membrane unit,
(B) is an EE view of FIG. 7 (a).

FIG. 9 is a plan view showing a configuration of a backwash unit.

FIG. 10 is a plan view illustrating a configuration of a cleaning unit.

FIG. 11 is an explanatory perspective view illustrating a configuration of a connection unit.

FIG. 12 is a plan view showing a configuration of a filtering device provided with various layouts.

FIG. 13 is a plan view showing a configuration of a filtering device provided with various layouts.

FIG. 14 is a diagram illustrating a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Filtration apparatus 2 ... Filtration membrane module 3 ... Stock solution supply pump 4 ... Stock solution supply unit 5 ... Filtration membrane unit 6 ... Backwashing pump 7 ... Backwashing unit 8 ... Chemical solution pump 9 ... Washing unit 10 ... Control unit 11 ... Distribution conditions Control unit 12 ... Power control unit 13 ... Stock solution pressure sensor 14 ... Stock solution flow control valve 15 ... Temperature sensor 16 ... Filtrate solution pressure sensor 17 ... Filtrate solution flow sensor 18 ... Filtrate solution flow control valve 19 ... Chemical solution on-off valve 20 ... Stock solution piping 21… Chemical liquid pipe 22… Filtrate liquid pipe 23… Chemical liquid tank 24… Chemical liquid return pipe 25… Chemical liquid return open / close valve 26… Air pipe 27… Air open / close valve 28… Drainage flow rate control valve 29… Backwash filtrate flow rate control valve 30 … Undiluted liquid return pipe 31… drain liquid flow control valve 32… undiluted liquid on-off valve 33… chemical liquid tank 34… chemical liquid pump 35… backwash pipe 36… return raw liquid pressure sensor 37… display unit 38… undiluted liquid tank 39… filtrate liquid tank 41… Joint members 42, 43… Housing 42a, 43a Flange 42b, 43b Bolt hole 44, 45 Tube 44a, 45a Convex 46 Rubber ring 46a Rib 47 Tapered surface 48 Bolt 48a Hex head 48b Hex lock 49 ... Nuts A1, A2, ... An ... Local control panels B1, B2, ... Bn ... Power panels C1, C2, ... Cn ... Power panels D1, D2, ... Dn ... Power panels M ... Main control panel

Claims (2)

(57) [Claims] Claims: 1. A cross-flow-type microfiltration or ultrafiltration apparatus for performing filtration while circulating a stock solution or performing filtration without circulating a stock solution, comprising a stock solution supply pump for feeding a stock solution. An undiluted solution supply unit, a filtration membrane unit having a filtration membrane that circulates the undiluted solution and performs filtration, a backwash unit having a backwash pump for supplying a filtrate to the filtration membrane, A cleaning unit having a chemical solution pump for supplying a chemical solution; and a raw solution supplied by the raw solution supply pump, a filtrate supplied by the backwash pump, and a liquid solution supplied by the chemical solution pump. Pressure, flow rate,
A control unit having an adjusting means for adjusting a flow condition such as a temperature, and the like are each configured as an independent unit, and the stock solution supply unit, the filtration membrane unit, the backwash unit, the cleaning A filtering apparatus characterized in that a required unit is appropriately selected and connected from the unit and the control unit, and the selected unit can be connected to one or a plurality of units as needed. 2. At least one of a stock solution, a filtrate, and a chemical solution.
A flow condition control unit that controls adjustment means that adjusts flow conditions such as pressure, flow rate, and temperature of the two liquids; and power control that controls at least one of the raw liquid supply pump, the backwash pump, and the chemical liquid pump. The filtering device according to claim 1, wherein each of the units and is configured as an independent control unit.