KR20160092878A - Moving pretreatment filtering intake device and intake system for water production using of the same - Google Patents

Abstract

The present invention relates to a mobile pretreatment filtering intake device and an intake system for water production using the same which can pretreat and remove a large foreign substance or a floating material to reduce a subsequent filtering load and maximize filtering efficiency, and allow direct use of water for living when needed. According to a proper embodiment of the present invention, the mobile pretreatment filtering intake device is deployed in raw water to be used, and comprises: a filter casing of a box shape having inflow holes formed in a diameter smaller than a filtering material and distributed on a surface thereof, and an inner suction pipe connection hole formed in the middle of a wall on one side thereof; an inner suction pipe provided with a plurality of flow holes distributed on an outer circumferential surface thereof, and fixed and installed in the filter casing to close one end thereof and connect the other end thereof to the inner suction pipe connection hole; an outer filter pipe provided with a filtering hole formed in a diameter smaller than the flow holes and larger than a particle size of the filtering material, and coaxially installed on an outer diameter of the inner suction pipe; disconnection prevention spacers installed between the inner suction pipe and the outer filter pipe at regular intervals in a longitudinal direction to prevent an abrupt pressure change of a filter fluid and a suction disconnection by creating a prescribed gap therebetween; and the filtering material filled in the filter casing around the outer filter pipe to form a filer layer.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving pretreatment filtration intake system and a water intake system using the same,

The present invention relates to a mobile pretreatment filtration water intake apparatus and a water intake system for water production using the same, in particular, it is possible to remove a pretreatment of a large foreign matter or suspended matter, thereby reducing the subsequent filtration load and maximizing the filtration efficiency. The present invention relates to a mobile pretreatment filtration water intake system and a water intake system for water production using the same.

The development status of domestic and foreign mobile water production equipment for emergency water supply such as flood or dry season has been activated by various types of mobile filtration devices using a container type or a mobile type, . Portable and military water purification plant equipment of General Electric GE Mobile Water Solutions, Veolia, Gloval Water Group, Container-type water treatment facility of China BIC, TRUNZ Water Systems of Switzerland, Mobile water purification vehicle of EX_Cuorier Water of Japan etc. Is known.

In Korea, there are SYNOPEX mobile water treatment system SMDT and DaeHyun Hi-Tech mobile water purification system. However, SYNOPEX is not proven to be available due to lack of domestic performance and has a disadvantage that the influent water needs to be around 1NTU for the use of membrane filter. In the case of Daehyun Hi-Tech, it is not a normal business at present. In the case of domestic companies, the mobile filtering device is inactivated due to the abolishment of business or lack of earnings.

The existing mobile water production system is equipped with its own generator (diesel) for the purpose of the alternative water supply in case of emergency, and the water production amount is about 20㎥ / hr, which is possible by combination of equipment according to production scale.

The water treatment process of domestic mobile water production equipment consists of raw water (ground water) → primary treatment pretreatment filter (multilayer filter) → membrane (RO) → UV (sterilization treatment) → treated water (drinking water). This is a general drinking water production process. In the case of membrane filter (RO SYSTERM), it is difficult to use it as a clogging membrane unless the influent water is about 1NTU clean water. Therefore, in general water treatment plants, it is necessary to treat chemicals such as flocculation, sedimentation, . In existing companies, there is a limit to use ground water as raw water. In case of disaster, the water quality of raw water is not constant, and it is difficult to utilize existing facilities if the pollution degree is high.

Therefore, the portable water production system can solve the water shortage problem by enabling long distance supply, and it is possible to secure various water supply sources (rivers, reservoirs, dams, ground water, etc.) It is necessary to be able to use it as a multi-use facility (river purification, algae removal, road cleaning, landscaping, etc.) with filtration equipment for domestic water and drinking water, and to be able to produce water in emergency by environmentally friendly energy .

As a background of the present invention, Korean Registration Registration No. 20-0445428 (portable water supply and water purification system) has been proposed. This is a portable heavy water and water purification system installed in a vehicle, and includes a water intake part for taking in sewage, rainwater, river and ground water; A pretreatment device for removing the solid matter of the collected water and administering the medicament, a water treatment device equipped with at least one filter, and a first sterilizing device equipped with an ultraviolet lamp; A drinking water section including a highly purified water treatment device for physically and biologically purifying the water treated in the water treatment section, a post treatment device for chemically cleaning the water treatment device, and a second sterilizing device equipped with an ultraviolet lamp; And a water supply part for separating and supplying the heavy water and the drinking water treated in the middle water part and the drinking water part. Therefore, this system is designed to produce water such as toilet water or bathroom water, or odd water such as odd water for laundry, in addition to drinking water which is highly pure water treated by taking river or rainwater.

However, in the background art, the preprocessing apparatus is applied with a mesh-type filter, and there is no solution for the contamination or clogging of the filter, so that the replacement cycle is fast and the maintenance cost can not be reduced.

Korean Patent Registration No. 10-1190031 (Membrane and System Protection Device of Portable Water Treatment System) has been proposed as another technology to be a background of the present invention. It is installed at disaster places where water supply is not possible or construction sites where water purification facilities are insufficient, and it takes water from underground water and river water to be purified water through a pretreatment filter, a microfilter, a membrane system, a post treatment system, a final filter, Is a system that can produce. However, the latter background technology has a problem in that the efficiency of the pretreatment filter as multi-layer filtration is not good and the filtration performance is deteriorated.

Korean Registered Utility Registration No. 20-0445428 (Portable Heavy Water and Water Purification System) Korean Patent Registration No. 10-1190031 (Membrane and System Protection Device of Portable Water Treatment System)

The present invention relates to a portable pre-filtration water intake apparatus capable of removing a pre-treatment of a large foreign matter or suspended matter, thereby maximizing a filtration efficiency and a downstream filtration load, The system has a purpose to provide.

According to a preferred embodiment of the present invention, the mobile pre-

A mobile pretreatment filtration water intake apparatus used by being put in raw water,

A filter casing in the form of a box having an inlet hole punctured at a surface thereof with a smaller diameter than the filter medium and having an inner suction pipe connecting hole formed at a center of one side wall;

An inner suction pipe fixed to the inside of the filtration casing and having one end closed and the other end connected to the inner suction pipe connection hole side;

An outer filtration tube having a diameter smaller than that of the filter and larger than the diameter of the filter medium, the filtration pipe being installed concentrically with the outer diameter of the inner suction pipe;

A short-circuiting spacer provided between the inner suction pipe and the outer filter pipe at predetermined intervals in the longitudinal direction to prevent sudden pressure fluctuation and suction short-circuiting of the filtration fluid due to mutual clearances; And

And a filter medium filled in the outer periphery of the outer filtration tube to form a filtration layer.

In addition, a plurality of supporters for stopper are fixedly installed in the circumferential direction by selecting a position of the short-circuit preventive spacer so that the inner suction pipe and the outer filter pipe are integrally positioned at the center of the filtration casing.

In addition, the inner suction pipe is made of HDPE (High Density Poly Ethylene) which is less susceptible to corrosion.

Further, the ratio of the total area of the perforations to the inner diameter cross-sectional area of the inner suction pipe is 400% or more.

In addition, the holes are arranged at intervals of 90 degrees in the circumferential direction for each interval.

Further, the holes are formed at intervals of 36 degrees or 45 degrees in the circumferential direction for each of the intervals, and are arranged to be divided into one upper hole and the other side hole symmetrical with respect to the upper hole, And has a relatively larger diameter than the hole.

In the meantime, the water intake system for water production using the mobile pre-filtration water intake system according to the present invention,

A backwashing wastewater chamber and a pretreatment chamber divided by a wall-partitioning bulkhead, a water treatment enclosure having a suction pipe connected to the lower portion of the pretreatment chamber and connected to the lower portion of the pretreatment chamber;

A movable pretreatment filtration water take-out device according to any one of claims 1 to 8 arranged in the pretreatment chamber and connected to the take-out suction pipe;

A strainer having a plate-like shape and disposed on an upper portion of the mobile pretreatment filtration water intake device and fixed to a pretreatment chamber;

A flow rate sensor for measuring the flow rate of the flow rate sensor provided between the intake port of the intake amount adjusting valve and the inlet of the inner suction pipe, A backwash water control valve connected to the backwash pump and an air control valve connected to a pneumatic source are connected to the pipe connecting the inner suction pipe and the flow rate sensor and a water intake pump is connected to the outlet of the water intake amount control valve And the backwashing wastewater chamber is provided with a backwashing wastewater control valve for controlling the discharge amount of the backwashing wastewater.

According to the mobile pretreatment filtration water intake system of the present invention and the water intake system for water production using the same, not only moving and transporting can be carried out on a movable vehicle, but also the water is introduced into a reservoir, a dam or a river, Thanks to the double pipe structure, it is possible to quickly remove large foreign matter or suspended matter by pretreatment by showing continuous filtering power without short circuit.

In addition, it is possible to easily backwash the filter material by supplying the backwash water to the inner suction pipe side, thereby preventing deterioration of the filtration performance, and can prevent the loss and leakage of the filter material by the strainer during backwashing, Lt; / RTI > In addition, since the raw water is introduced into the backwashing wastewater chamber, and the raw water is supplied to the filtration chamber through the overflow barrier, the low noise operation is possible.

As a result, it can be used as a pretreatment filtration facility and has an advantage that it can be used for taking in various kinds of living water, fire-fighting water, or landscaping water immediately when necessary.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
1 is a perspective view of a mobile pretreatment filtration water intake apparatus according to an embodiment of the present invention;
Fig. 2 is a front sectional view of Fig. 1; Fig.
3 is an enlarged cross-sectional view taken along line AA of Fig.
4 is a perspective view of a mobile pretreatment filtration water intake apparatus according to another embodiment of the present invention.
FIG. 5 is a view showing various arrangements of the inner suction port holes according to the present invention. FIG.
FIG. 6 is a use state diagram of a mobile pretreatment filtration water intake apparatus according to an embodiment of the present invention; FIG.
7 is a schematic view of a water intake system for water production using a mobile pretreatment filtration tank according to the present invention.
8 is a sectional view taken along line BB of Fig.
9A is a view showing a pretreatment filtration process of a pretreatment filtration water take-in facility for water production according to the present invention.
FIG. 9B is a view illustrating a back washing process of the pre-treatment filtration water intake system for water production according to the present invention. FIG.
10 is a graph showing an average intake flow rate according to a change in porosity of an inner suction pipe applied to the present invention.
11 is a graph showing an average intake flow rate according to a change in length of an inner suction pipe applied to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

1 to 3, the mobile pretreatment filtration water intake apparatus 10 of the present invention includes a filtration casing 12. As shown in FIG. The filter casing 12 is provided with an inlet hole 121 having a smaller diameter than that of the filter member 18 to be described later on the front surface or a predetermined portion of the surface of the filter casing 12. An inner suction pipe connecting hole 122 is formed in the center of one side wall . The filtration casing 12 can be configured, for example, as a rectangular box of FIG. 1 or as a cylindrical box of FIG. Although the inlet holes 121 are formed only in the longitudinal direction of the filtration casing 12, the inlet holes 121 may be selectively formed on the front and rear surfaces of the filtration casing 12 or may be formed on both sides of the filtration casing 12.

An inner suction pipe (14) connected to the inner suction pipe connecting hole (122) is provided in the filtration casing (12). One end of the inner suction pipe 14 is closed and the other end is connected to the inner suction pipe connection hole 122 side. Further, the inner suction pipe 14 has a plurality of distributed perforations 142 on the outer circumferential surface thereof. At this time, the other end of the inner suction pipe 14 may be connected to the inner suction pipe connection hole 122 side with a flange for bonding. As shown in FIG. 5 (A), the perforations 142 may be arranged at intervals of 90 degrees in the circumferential direction at intervals of each interval. 5 (B) and 6 (C), the holes 142 may be formed at intervals of 36 degrees or 45 degrees in the circumferential direction at intervals of each interval. At this time, the perforations 142 may be divided into one upper perforation 142a and the remaining side perforations 142b symmetrical with respect to the upper perforations 142a, and the upper perforations 142a may be arranged with respect to the side perforations 142b It can have a relatively large diameter.

In the present embodiment, when the average flow rate of the inner suction pipe 14 is measured according to the change of the tide and the porosity, as shown in FIG. At this time, the inner suction pipe 14 was 50 mm in diameter and the filter was 0.3 m in length. Here, the 'porosity ratio' means a ratio of the total area of the perforations to the inner diameter cross-sectional area of the inner suction pipe 14. The term "tidal" refers to the level of a reservoir, a dam, or a river point into which the filtration casing 12 is introduced. In addition, when the average flow rate along the length of the inner suction pipe 14 was measured, it can be seen that when the pipe length is as short as 0.5 m as shown in FIG. 11, the flow difference according to the porosity rate shows a large change. Is 2.0 m, it is not influenced by the variation of porosity. Therefore, the length of the inner suction pipe 14 is preferably at least 2.0 m or more. Here, raw water means water resources stored in river water, ground water or reservoirs and dams.

Meanwhile, it is preferable that the inner suction pipe 14 is made of HDPE (High Density Poly Ethylene) which is less susceptible to corrosion.

An outer filtration tube (16) is provided concentrically on the outer diameter portion of the inner suction pipe (14). The outer filtration tube 16 is formed with a filtration hole 161 having a diameter smaller than the diameter of the filter medium 18 and smaller than the diameter of the filter medium 18.

A short-circuit prevention spacer 17 may be further provided between the inner suction pipe 14 and the outer filtration pipe 16. The short-circuit preventive spacers 17 are provided at regular intervals in the longitudinal direction to generate a constant clearance between the inner suction pipe 14 and the outer filtration pipe 16, thereby preventing abrupt pressure fluctuation and suction short-circuiting of the filtration fluid. The short-circuit prevention spacer 17 is formed in a circular ring shape in the present embodiment, but it is not limited thereto.

Around the outer filtration tube (16), a filter medium (18) for forming a filtration layer is filled in the filtration casing (12). The filter material 18 constitutes a physical filtration layer. For example, it can be a 0.2 mm silica sand which can retain a large amount of suspended solids in the filtration layer for a long time and reduce the loss head.

A plurality of supporters (15) can be fixedly installed on the filtration casing (12) to prevent the outer filtration tube (16) from sagging and to secure the installation. A plurality of supporters (15) can be installed in the circumferential direction by selecting the position of the short-circuit preventing spacer (17).

The mobile pretreatment filtration water intake apparatus 10 constructed as described above can be used in connection with the filtration facility 2 mounted on the movable vehicle 1 (for example, a trailer) as shown in FIG. That is, the suction port of the inner suction pipe 14 is connected to the filtration facility 2 through the hose 3 and used. At this time, the filtration casing 12 is put into a reservoir and immersed in water, for example.

A suction force is generated in the inner suction pipe 14 by the suction force generated by the suction pump () on the filtration facility (2), so that the incoming reservoir water flows through the inflow hole (121) of the filtration casing And passes through the filtration hole 161 of the outer filtration pipe 16 and the hole 142 of the inner suction pipe 14 sequentially after passing through the filter medium 18 layer. In this process, the water in the reservoir is pre-filtered through the micro-pores of the filter medium 18, and the filtrate is pretreated with a high concentration of sludge and foreign substances such as suspended solids and suspended solids contained in the reservoir water.

At this time, due to the constant clearance space generated by the short-circuit prevention spacer 17 provided between the inner suction pipe 14 and the outer filtration pipe 16, abrupt pressure fluctuation and suction short-circuit of the filtration fluid can be prevented.

By preliminarily performing the physical filtration pretreatment in order to produce the living water or the drinking water from the reservoir water, the load of the filtration facility which is operated in the filtration facility 2 of the mobile trailer 1 which is subjected to the first or more subsequent treatment can be reduced. As a matter of course, filtration pretreatment water can be directly used as living water, fire-fighting water or landscape water.

On the other hand, the present invention can also constitute a water intake system for water production as shown in Figs. 7 and 8 by using the mobile pretreatment filtration water intake apparatus 10.

That is, as shown in Figs. 7 and 8, the mobile pretreatment filtration water intake apparatus 10 is installed inside the water treatment enclosure 13. Fig.

The water treatment enclosure 13 is provided with a wall partitioning wall 132 having a flange introduction pipe 131 at its upper portion, a backwashing wastewater chamber 133 divided by the wall partitioning wall 132, a preprocessing chamber 134, And a take-out suction pipe 135 connected to the lower portion of the preprocessing chamber 134 and connected thereto. The backwashing wastewater chamber 133 is relatively smaller in volume than the pretreatment chamber 134.

Therefore, the raw water introduced through the flange introduction pipe 131 flows into the backwashing wastewater chamber 133 as shown in FIG. 9A, and then flows over the wall partitioning wall 132 to be supplied to the pretreatment chamber 134.

At this time, the mobile pretreatment filtration water intake apparatus 10 is disposed in the pretreatment chamber 134 and connected to the extraction suction pipe 135. Therefore, the pretreatment chamber 134 has a volume sufficient to accommodate at least the length of the inner suction pipe 14. [

In addition, a plate-like strainer 20, which is fixed to the pretreatment chamber 134, is disposed above the mobile pretreatment filtration water intake apparatus 10. The strainer 20 can be configured in a plate-like shape or a box shape. The strainer 20 has a washing water inflow groove 201 for taking stability of the filter medium during backwash and for guiding the floated washing foreign matter to the backwashing wastewater chamber 133 and a water inflow hole 201 formed on the side of the washing water inflow groove 201, (202).

Here, 'backwashing' means that air or washing water is forced from the outlet side to the inner suction pipe 14 (to be described later) in order to remove foreign matters or pollutants (substances causing blocking the filtration pores) Means a treatment operation in which foreign substances or contaminants are removed by injection.

A raw water inflow amount control valve 51 for controlling the inflow amount of the raw water is connected to the flange introduction pipe 128 and a withdrawing suction pipe 135 is connected to the intake port side of the inner suction pipe 14 Lt; / RTI > And a flow rate regulator 54 for adjusting the opening and closing amount of the intake amount regulating valve 52 is installed on the basis of the flow rate measurement value of the flow rate sensor 53 provided between the intake amount regulating valve 52 and the inlet side of the inner suction pipe 14. [

A backwash water control valve 55 connected to the backwash pump 57 and an air control valve 56 connected to the pneumatic source 58 are connected to the pipe connecting the inner suction pipe 14 and the flow rate sensor 53, A backwashing wastewater control valve 60 is provided in the backwashing wastewater chamber 133 for controlling the amount of backwashing wastewater discharged during backwashing.

The operation of the water intake system for water production using the mobile pretreatment filtration water intake apparatus 10 constructed as described above will be described below.

7 and 9A, the raw water flowing through the raw water inflow amount control valve 51 flows into the backwashing wastewater chamber 133 in the water treatment enclosure 13, (134). At this time, the inlet of the raw water inflow amount control valve 51 may be connected to the unshown supply pump through the hose by sucking raw water.

The inflow direction of the raw water introduced into the backwashing wastewater chamber 133 not only avoids the preheating chamber 134 but also flows into the flow volume already filled in the backwashing wastewater chamber 133, ) Layer can be stabilized.

And then passes through the strainer 20 by its own weight to reach the water level of a certain height after filling the inside of the inner suction pipe 14 with the layer of the filter material 18.

In this state, when the water intake amount regulating valve 52 is opened and the water intake pump 59 is driven, a suction force is generated in the inner suction pipe 14, whereby the incoming water flows through the filter medium 18, the outer filtration pipe 16, And the through hole 142 of the inner suction pipe 14 in this order. In this process, the raw water is subjected to preliminary filtration treatment through the micro-pores of the filter material layer 18, such as aquatic plants contained in the raw water, foreign substances such as suspended substances, and sludge having a high concentration.

At this time, due to the constant clearance space generated by the short-circuit prevention spacer 17 provided between the inner suction pipe 14 and the outer filtration pipe 16, abrupt pressure fluctuation and suction short-circuit of the filtration fluid can be prevented.

In this way, the physical filtration pretreatment is preferentially performed in order to produce the living water or the drinking water from the raw water, thereby reducing the load on the filtration equipment which is subsequently subjected to the first-order over treatment. Of course, filtration pretreatment can be used directly as drinking water.

On the other hand, if the filtration efficiency of the filter material 18 is lowered, the backwashing process can be performed as shown in FIG. 9B.

This can be done by alternately supplying the backwash water of the backwash pump 57 or the inflow of the backwash air to the pneumatic source 58 in a state where the inflow of raw water is stopped and the water intake control valve 52 is closed. At this time, the backwashing wastewater control valve 60 opens the predetermined amount of pipeline.

For example, when the backwash pump 57 is operated, the backwash water passes through the air hole 142 of the inner suction pipe 14, the filtration hole 161 of the outer filtration pipe 16, and the layer of the filter material 18 And is discharged through the strainer 20 to the backwashing wastewater chamber 133 and then through the backwash wastewater control valve 60.

At this time, the strainer 20 discharges backwashing wastewater through the inflow / outflow opening 202, and then introduces the backwashing wastewater into the backwashing wastewater chamber 133 through the washing water inflow groove 201. Also, in this process, the strainer 20 suppresses excessive floating of the filter material 18 and prevents leakage, thereby achieving a stable filtration layer. Further, the backwash water flowing backward through the filter material layer 18 is attached to the filter material 18 or removes foreign matter present in the filtration space 18, thereby having the original filtration performance.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

12: Filtration casing
13: Water treatment enclosure
14: Inner suction pipe
15: Supporters for government
16: Outer filtration tube
18: Filter medium
19: Short spacer
20: Strainer
131: Flange introduction pipe
132: barrier wall
133: Backwashing wastewater chamber
142:
142a:
142b: side air hole

Claims (7)

In a mobile pretreatment filtration water intake apparatus (10) which is used by putting it in raw water,
A filtration casing (12) having an inlet hole (121) punctured with a smaller diameter than a filter medium on a surface thereof and having an inner suction pipe connection hole (122) formed at the center of one side wall;
An inner suction pipe (14) fixed to the inside of the filtration casing (12) and having one end closed and the other end connected to the inner suction pipe connection hole (122) side with a plurality of distributed pores (142) on an outer peripheral surface;
An outer filtration pipe (16) having a diameter smaller than the pore (142) and having a diameter larger than that of the filter medium (18) and being installed concentrically on an outer diameter portion of the inner suction pipe (14);
A short-circuit prevention spacer 17 installed between the inner suction pipe 14 and the outer filtration pipe 16 at predetermined intervals in the longitudinal direction to prevent sudden pressure fluctuation and suction short-circuiting of the filtration fluid due to mutual clearances; And
And a filter medium (18) filling the inside of the filtration casing (12) around the outer filtration pipe (16) to form a filtration layer. The method according to claim 1,
The position of the short-circuit preventing spacer 17 is selected in order to locate the inner suction pipe 14 and the outer filter pipe 16 in the center of the filtration casing 12, and a plurality of supporters 15 for the pipes are arranged in the circumferential direction, Wherein the filter is fixedly installed. The method according to claim 1,
Wherein the inner suction pipe (14) is made of HDPE (High Density Poly Ethylene) material which is less susceptible to corrosion. The method according to claim 1,
Wherein the ratio of the total area of the perforations to the inner diameter cross-sectional area of the inner suction pipe (14) is 400% or more. The method according to claim 1,
Wherein the perforations (142) are arranged at intervals of 90 degrees in the circumferential direction at intervals of each interval. The method according to claim 1,
The perforations 142 are formed at intervals of 36 degrees or 45 degrees in the circumferential direction for each of the intervals, and at the same time, one upper hole 142a and the other side hole 142b symmetrical with respect to the upper hole 142a , And the upper hole (142a) has a larger diameter than the side hole (142b). The backwashing wastewater chamber 133 and the pre-treatment chamber 134 divided by the wall-partitioning partition wall 132, the pre-treatment chamber 134 and the pre-treatment chamber 134, which are partitioned by the wall- A water treatment enclosure (13) having a suction pipe (135) for blowout connected to the lower portion and connected thereto;
A mobile pretreatment filtration water intake apparatus (10) according to any one of claims 1 to 8 arranged in the pretreatment chamber (134) and connected to the extraction suction pipe (135);
A strainer 20 of a plate type disposed on an upper portion of the mobile pretreatment filtration water intake apparatus 10 and fixed to a pretreatment chamber 134;
A water intake control valve 51 is connected to the flange introduction pipe 128 and a water intake control valve 52 is connected to a suction port side of the inner suction pipe 14 and a water intake control valve 52 and an inner suction pipe 14 are connected, A flow rate regulator 54 for adjusting the opening and closing amount of the intake amount regulating valve 52 is provided on the basis of the flow rate measurement value of the flow rate sensor 53 provided between the inlet side of the intake pipe 14 and the flow rate sensor 53, A backwash water control valve 55 connected to the backwash pump 57 and an air control valve 56 connected to the pneumatic source 58 are connected to the pipe for the water intake control valve 52. A water intake pump 59 is connected to the outlet of the water intake control valve 52, And a backwashing wastewater regulating valve (60) for regulating the amount of backwashing wastewater discharged is installed in the backwashing wastewater chamber (133).

Images