KR100899657B1 - Reverse Pressure Pump for Disposing Waste Water by Reverse Osmosis - Google Patents

Abstract

The present invention discloses a reverse osmosis wastewater treatment backpressure pump that eliminates clogging of membranes that purify wastewater by reverse osmosis. Such a reverse osmosis wastewater treatment back pressure pump includes a valve housing provided with a discharge space through which product water of wastewater can be introduced and an outlet for discharging production water in a storage space formed on one side, And a pressure cylinder to which an end portion of the piston and the valve housing which reverses the produced water to the filter portion side while blocking the discharge port is connected and a rod is connected to the piston to linearly move the piston in the storage space. Therefore, the present invention can provide a water pressure capable of relieving the clogging of the membrane by pressing the produced water in the storage space by the operation of the pressurizing cylinder.

Membrane, valve housing, pressurized cylinder, rod, piston

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reverse osmotic pressure-

1 is a schematic diagram of a reverse osmosis wastewater treatment backpressure pump according to an embodiment of the present invention applied to a wastewater treatment facility.

2 is a cross-sectional view of a reverse osmosis wastewater treatment backpressure pump according to an embodiment of the present invention.

3 is an operational view of FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

100: filter unit 110: membrane

120: supply part 122: pressure pump

125: Check valve 127: Buffer tank

130: Pressure switch 140: Plunger pump

142: valve housing 143: retention space

145: exhaust port 150: piston

152: pressure cylinder 153: rod

155: oil seal 158: connecting plate

160: inlet plate 162: inlet

165: bolt 167: solenoid valve

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reverse osmosis wastewater treatment backpressure pump, and more particularly to a reverse osmosis wastewater treatment backpressure pump in which purified water produced from wastewater flows toward a filter portion.

Generally, wastewater treatment is a treatment of pollutants that collects dirty water including various pollutants generated in factories or mines in one place to physically remove pollutants and remove chemical pollutants by administering chemicals.

Specifically, wastewater generated from semiconductor processing, which mainly consists of heavy chemical industry facilities or chemical treatment processes, contains heavy metals and various organic pollutants. When heavy metals and various organic pollutants are discharged into the ecosystem as they are, serious environmental pollution .

Since wastewater containing heavy metals and various organic pollutants can not be purified by conventional sewage treatment facilities, it is necessary to collect the wastewater in a certain place and transfer it to a facility capable of treating heavy metals and various polluting chemicals.

Such wastewater treatment is mainly carried out in a wastewater treatment facility equipped with an R / O (REVERSE OSMOSIS) device using osmotic pressure, and the R / O device passes pure water through the concentration difference and blocks the passage of the remaining pollutants And a membrane (separation membrane).

However, in the conventional R / O device, the minute passage of the membrane through which the water can pass due to the long time wastewater being filtered is blocked by the contaminant which receives the flow pressure in the purified water direction due to the difference in concentration, , And the problem is pointed out that the water efficiency is returned to the original state by frequently exchanging the membranes in which the micro-channels are blocked.

Here, although a pressure pump capable of allowing backflow of purified water is used in the R / O device in case the membrane of the R / O device is clogged, it is suitable for a small capacity wastewater treatment facility having a very small wastewater treatment capacity. It was not possible to efficiently solve the clogging of the wastewater treatment facility, and it was not a suitable model for an increasingly large wastewater treatment facility.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a reverse osmosis wastewater treatment backpressure pump which is effectively applied to a wastewater treatment facility, This is the purpose.

According to an aspect of the present invention, there is provided a reverse osmosis wastewater treatment back pressure pump, comprising: a filter unit disposed at one side of the filter unit, A piston for pressurizing the water produced in the storage space of the valve housing and returning the produced water to the filter part while blocking the discharge port; And a pressurizing cylinder to which an end of the valve housing is coupled and a rod is connected to the piston to linearly move the piston in the retention space.

Hereinafter, preferred embodiments of a reverse osmosis wastewater treatment back pressure pump according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the following embodiments are not intended to limit the scope of the present invention, but merely as an example, and various embodiments may be implemented through the present invention.

Example

2 is a cross-sectional view of a reverse osmosis wastewater treatment backpressure pump according to an embodiment of the present invention, and Fig. 3 is a cross-sectional view of the reverse osmosis wastewater treatment backpressure pump according to an embodiment of the present invention. 2 is an operation diagram of FIG.

As shown in FIG. 1, the wastewater treatment facility includes a membrane 110 in which wastewater flows in from one side, and the wastewater is filtered by the concentration difference, and the wastewater flows into the region from the outside and the membrane And a supply unit 120 connected to one side of the filter unit 100 and supplying wastewater to the filter unit 100. The filter unit 100 includes a filter unit 100,

A storage space 143 through which purified wastewater flows while passing through the membrane 110 is formed in the other area of the filter unit 100 with reference to the membrane 110, And a piston 150 for returning the purified wastewater in the storage space 143 to the membrane 110 side while closing the discharge port 145 so that the membrane A reverse osmosis wastewater treatment back pressure pump 140 for eliminating the clogging of the washing tub 110 is connected.

At this time, the piston 150 of the reverse osmotic pressure wastewater treatment back pressure pump 140 is purified after passing through the membrane 110, and the produced water flowing into the storage space 143 can be pressurized and flow back to the membrane 110 side , The contaminants trapped in the micro-channel of the membrane 110 are pressurized by the produced water backwashed by the reverse osmotic pressure wastewater treatment back pressure pump 140 to be separated from the micro-channel into the area where the wastewater of the membrane 110 is present, Can flow into the area where the purified and high concentration wastewater is present and can be discharged together with the wastewater whose concentration of the pollutant is increased.

The supply unit 120 includes a pressurization pump 122 that pressurizes the wastewater to flow toward the membrane 110 side of the filter unit 100 and is connected downstream of the pressurization pump 122 to discharge the wastewater A check valve 125 which blocks the reverse flow of the reverse osmosis wastewater treatment backflow pump 140 and a shock of the wastewater which is connected to the downstream of the check valve 125 and is provided upstream of the filter unit 100 and is backwardly flowed by the operation of the reverse osmosis wastewater treatment back pressure pump 140 And includes a buffer tank 127 that attenuates.

At this time, the pressurizing pump 122 provides a high pressure to allow the pure water of the wastewater flowing into the filter unit 100 to pass through the membrane 110.

The buffer tank 127 can maintain the flow pressure of the wastewater fed to the filter unit 100 constant by the wastewater pressurized by the pressurizing pump 122 at a predetermined height, When the product water is backwashed to the filter unit 100 by the water pump 140, the wastewater flowing backward from the filter unit 100 to the pressure pump 122 side is introduced, And the filter unit 100 are absorbed.

The pressure of the wastewater flowing from the pressurizing pump 122 to the filter unit 100 is measured downstream of the pressurizing pump 122 to increase the clogging due to contaminants in the membrane 110 of the filter unit 100, Osmotic pressure wastewater treatment back pressure pump 140 to operate the reverse osmosis wastewater treatment back pressure pump 140 so as to eliminate the clogging of the membrane 110 when the pressure of the ozone layer 100 is increased A pressure switch 130 is provided.

That is, when the clogging due to the contaminant is generated in the membrane 110 of the filter unit 100 and the purified water amount of the membrane 110 is reduced, When the flow pressure of the wastewater becomes larger than that in the case where the flow rate of the wastewater is constant at the membrane 110, the reverse osmosis wastewater treatment backpressure pump 140 is operated so that the production water flows toward the membrane 110 Backflow.

2 and 3, the reverse osmosis wastewater treatment back pressure pump 140 provides a retention space 143 through which the production water of the wastewater filtered by the pollutant can be introduced through the membrane 110 And a valve housing 142 having a discharge port 145 for discharging the produced water in the storage space 143. The valve 145 is configured to press the product water in the storage space 143 of the valve housing 142, The piston 150 and the end of the valve housing 142 are coupled to the filter unit 100 while the rod 153 is connected to the piston 150 to connect the piston 150 to the storage space 143). ≪ / RTI >

Here, the pressurizing cylinder 152 may be provided with hydraulic pressure or pneumatic pressure to provide a pressure to push the piston 150 connected to the rod 153 so that the produced water can flow back to the filter unit 100 side.

A pressure equalizing hole 146 for introducing air into the valve housing 142 to remove a negative pressure generated inside the valve housing 142 by the movement of the piston 150 is formed at the end of the valve housing 142, .

When the piston 150 moves while pressurizing the production water in the storage space 143 inside the valve housing 142 toward the filter unit 100 side, the pressure equalization hole 146 is formed in the space where the piston 150 was located The negative pressure generated in the clearance of the piston 150 is removed by permitting the inflow of air and the discharge of the air pressurized by the piston 150 when the piston 150 returns to the original position is released to the outside of the valve housing 142 So that the piston 150 can be smoothly moved inside the valve housing 142.

An end of the valve housing 142 is closed at the end of the valve housing 142 so that the rod 153 of the pressurizing cylinder 152 is slidably engaged and the oil seal 155 is brought into close contact with the outer circumferential surface of the rod 153. [ And a connection plate 158 having a plurality of connection holes.

An inlet plate 160 is connected to the other end of the valve housing 142 to provide an inlet port 162 to the filter unit 100. The inlet plate 160 and the connecting plate 158 are connected to a plurality of bolts (Not shown). At this time, the inflow plate 160 is connected to the connection plate 158 by a plurality of bolts 165, thereby enduring the internal pressure of the produced water flowing into the storage space 143.

At this time, a solenoid valve 167 is provided at one side of the pressure cylinder 152 to block the flow of the produced water through the discharge port 145. The solenoid valve 167 applies pressure to the pressure cylinder 152, The flow of the produced water through the discharge port 145 is blocked before the movement of the piston 150 to prevent the loss of the pressure generated when the production water flows out from the storage space 143 to the discharge port 145, So that the production water in the storage space 143 can be stably backflowed to the filter unit 100.

On the other hand, a check valve 170 may be provided at one side of the pressure cylinder 152 to block the back flow of the produced water that has passed through the discharge port 145 of the valve housing 142.

The reverse osmosis wastewater treatment backpressure pump according to the present invention configured as described above is configured such that the piston is easily moved in the storage space of the valve housing by the operation of a pressurizing cylinder that receives pneumatic pressure or hydraulic pressure to overcome the water pressure applied to the filter portion, Thereby providing a pressure capable of easily reversing the production water.

Claims (4)

A valve housing provided at one side thereof with a discharge port for discharging produced water in the storage space; A piston for pressurizing production water in the storage space of the valve housing and returning the produced water to the filter portion side while blocking the discharge port; And A pressure cylinder coupled to an end of the valve housing and connected to the piston to linearly move the piston in the retention space, And a pressure equalizing hole for introducing air into the valve housing by the movement of the piston is formed on an end side of the valve housing. delete The method according to claim 1, Wherein the end of the valve housing is provided with a connecting plate having an end portion of the valve housing closed and an oil seal fitted to the outer circumferential surface of the rod and being slidably coupled with the rod of the pressurizing cylinder. Pump. The method according to claim 1 or 3, And an inflow plate coupled to the other end of the valve housing to provide an inlet connected to the filter portion in the storage space, wherein the inlet plate and the connecting plate are fastened by a plurality of bolts.

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