CN217148774U - A filtration equipment and filtration system for handling waste water - Google Patents

Abstract

The application relates to the technical field of water treatment and provides a filtering equipment and filtration system for handling waste water, wherein, the filtering equipment for waste water includes: one end of the first pipeline is connected with a water outlet of the original water tank, and the other end of the first pipeline is connected with a water inlet of the circulating pump; one end of the second pipeline is connected with a water outlet of the circulating pump, and the other end of the second pipeline is connected with a water inlet of the ultrafiltration membrane; one end of the third pipeline is connected with a filtered water outlet of the ultrafiltration membrane, and the other end of the third pipeline is connected with a water inlet of the first water production tank; one end of the fourth pipeline is connected with a water outlet of the first water production tank, and the other end of the fourth pipeline is connected with a water inlet of the second water production tank; one end of the cleaning pipeline is connected to the first pipeline, and the other end of the cleaning pipeline is connected with a cleaning system; and water of the cleaning system flows through the cleaning pipeline, part of the first pipeline, the circulating pump and the second pipeline and enters the ultrafiltration membrane. Through the optimization to the pipeline, cleaning system can wash the milipore filter, and effectual reduction maintains the frequency, and then reduces the maintenance cost.

Description

A filtration equipment and filtration system for handling waste water

Technical Field

The present application relates to the field of water treatment technology, for example to a filtration apparatus and filtration system for treating wastewater.

Background

Currently, membranes are materials with selective separation functions. The processes of separation, purification, concentration and the like of feed liquid are realized by utilizing selective separation of a membrane, but the separation process is different from the traditional filtration, wherein the membrane can carry out separation within a molecular range, and the process is also a physical process and does not need to add an auxiliary agent for reaction or phase change. In the related art, the pore diameter of the membrane is generally in the micron order, and the membrane can be classified into a microfiltration membrane, an ultrafiltration membrane, a nanofiltration membrane, a reverse osmosis membrane and the like according to the difference of the pore diameter (or called as cut-off molecular weight).

However, in any membrane structure, the membrane is contaminated in the operation process, namely, the membrane is adsorbed by certain components in the feed liquid and deposited on the membrane surface; or enter into the membrane pores and even possibly block the membrane pores, so that the permeation resistance of the membrane is greatly increased. In the process, the degree of membrane surface pollution is influenced by physical, chemical or biological effects of the feed liquid, and is also related to the concentration, charge, pH value and the like of components in the feed liquid.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

above-mentioned membrane structure needs the manual work to watch on at in-process of in-service use, changes filter core and adds medicine washing membrane structure according to the operational aspect, and high turbidity waste water especially, the cleaning frequency is higher.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a filtering device and a filtering system for treating wastewater, so as to solve the problem of high cleaning frequency.

In some embodiments, the filtration apparatus for wastewater comprises: one end of the first pipeline is connected with a water outlet of the original water tank, and the other end of the first pipeline is connected with a water inlet of the circulating pump; one end of the second pipeline is connected with a water outlet of the circulating pump, and the other end of the second pipeline is connected with a water inlet of the ultrafiltration membrane; one end of the third pipeline is connected with a filtered water outlet of the ultrafiltration membrane, and the other end of the third pipeline is connected with a water inlet of the first water production tank; one end of the fourth pipeline is connected with a water outlet of the first water production tank, and the other end of the fourth pipeline is connected with a water inlet of the second water production tank; one end of the cleaning pipeline is connected to the first pipeline, and the other end of the cleaning pipeline is connected with a cleaning system; and water of the cleaning system flows through the cleaning pipeline, part of the first pipeline, the circulating pump and the second pipeline and enters the ultrafiltration membrane.

In some embodiments, the cleaning system includes a cleaning tank, and the cleaning circuit includes: one end of the first cleaning branch is connected with a water outlet of the cleaning water tank, and the other end of the first cleaning branch is connected with a water inlet of the circulating pump; and one end of the second cleaning branch is connected with a water outlet for cleaning the water tank, and the other end of the second cleaning branch is connected with a water inlet of a reverse osmosis membrane.

In some embodiments, a second filter and a reverse osmosis membrane are arranged on the fourth pipeline, and the tail end of the fourth pipeline is connected with a second water production tank; wherein, still be connected with the branch road of filtering on reverse osmosis membrane and the pipeline of second product water tank, the end-to-end connection of filtering the branch road has concentrated water tank.

In some embodiments, the filtering apparatus for wastewater further comprises: and one end of the cleaning water return path is connected with a water outlet of the ultrafiltration membrane, and the other end of the cleaning water return path is connected with a cleaning water tank.

In some embodiments, the first conduit comprises: one end of the first branch is connected with a water outlet of the ultrafiltration membrane, and the other end of the first branch is connected with a first water inlet of the first filter; and one end of the second branch is connected with the water outlet of the first filter, and the other end of the second branch is connected with the water outlet of the circulating pump.

In some embodiments, the filtering apparatus for wastewater further comprises: and one end of the first flushing pipeline is connected with a water outlet of the first water production tank, and the other end of the first flushing pipeline is connected with a water inlet of the original water tank and a second water inlet of the first filter respectively.

In some embodiments, the filtering apparatus for wastewater further comprises: one end of the second flushing pipeline is connected with a water outlet of the ultrafiltration membrane, and the other end of the second flushing pipeline is connected to the second branch pipeline respectively; and the liquid in the second flushing pipeline flows through part of the second branch pipeline, the circulating pump and the second pipeline and enters the ultrafiltration membrane.

In some embodiments, the filtering apparatus for wastewater further comprises: the box, its inside mounting bracket that is provided with, reverse osmosis membrane and milipore filter all transversely set up on the mounting bracket, and reverse osmosis membrane and milipore filter set up side by side.

In some embodiments, the first water producing tank and the second water producing tank are arranged in the box body, and a dosing port communicated with the first water producing tank is arranged on the box body.

In some embodiments, the filtration system comprises the filtration apparatus for wastewater as set forth in the preceding embodiments.

The filtering equipment and the filtering system for treating wastewater provided by the embodiment of the disclosure can realize the following technical effects:

through the position relation adjustment of each device and the optimization of the pipelines, water of the cleaning system can flow through the cleaning pipeline, part of the first pipeline, the circulating pump and the second pipeline to enter the ultrafiltration membrane, the ultrafiltration membrane is cleaned, the membrane pollution condition is avoided, the maintenance frequency is effectively reduced, and the maintenance cost is further reduced; meanwhile, aiming at high-turbidity wastewater, the frequency of replacing filter elements of the filter and the frequency of adding chemicals can be reduced.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic diagram of an apparatus for filtering wastewater according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram I of the internal structure of a filtering apparatus for wastewater according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of an internal structure of a filtering apparatus for wastewater according to an embodiment of the present disclosure.

Reference numerals:

100: a raw water tank; 101: a first filter; 200: ultrafiltration membranes; 201: a circulation pump; 300: a first water production tank; 301: a second filter; 302: a medicine adding port; 400: a reverse osmosis membrane; 500: a second water production tank; 600: cleaning the system; 601: cleaning the water tank; 700: a concentrated water tank; 701: filtering the branch; 800: a box body; 801: a mounting frame;

10: a first pipeline; 11: a first branch; 12: a second branch circuit; 20: a second pipeline; 30: a third pipeline; 40: a fourth pipeline; 50: cleaning a pipeline; 51: a first cleaning branch; 52: a second cleaning branch; 53: cleaning a water return path; 60: a first flushing line; 70: a second flushing line.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be internally connected between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

As shown in connection with fig. 1, a first aspect of an embodiment of the present disclosure provides a filtering apparatus for wastewater, including: a first line 10, a second line 20, a third line 30, a fourth line 40 and a purge line 50. Wherein, one end of the first pipeline 10 is connected with a water outlet of the raw water tank 100, and the other end is connected with a water inlet of the circulating pump 201; one end of the second pipeline 20 is connected with a water outlet of the circulating pump 201, and the other end of the second pipeline is connected with a water inlet of the ultrafiltration membrane 200; one end of the third pipeline 30 is connected with a filtered water outlet of the ultrafiltration membrane 200, and the other end is connected with a water inlet of the first water production tank 300; a fourth pipeline 40, one end of which is connected with the water outlet of the first water production tank 300 and the other end of which is connected with the water inlet of the second water production tank 500; a cleaning pipeline 50, one end of which is connected to the first pipeline 10 and the other end of which is connected to a cleaning system 600; the water of the washing system 600 flows through the washing line 50, part of the first line 10, the circulation pump 201 and the second line 20 to enter the ultrafiltration membrane 200.

Through the position relation adjustment of each device and the optimization of the pipelines, water in the cleaning system 600 can flow through the cleaning pipeline 50, part of the first pipeline 10, the circulating pump 201 and the second pipeline 20 to enter the ultrafiltration membrane 200, and the ultrafiltration membrane 200 is cleaned, so that the membrane pollution condition is avoided, the maintenance frequency is effectively reduced, and the maintenance cost is further reduced; meanwhile, aiming at high-turbidity wastewater, the frequency of replacing filter elements of the filter and the frequency of adding chemicals can be reduced. Therefore, the remote monitoring of the small-sized equipment can be realized, and unattended management can be performed.

The ultrafiltration membrane in the related technology needs to control the inlet water turbidity to be 50NTU (nephelometric turbidity unit), COD (Chemical Oxygen Demand) to be less than 200mg/L and SS (suspended matter) to be less than 100mg/L, has a narrow application range, and needs to carry out pretreatment for removing COD and SS on water quality to enter the membrane.

In some embodiments of the present application, by the arrangement of the first pipeline 10, the second pipeline 20, the third pipeline 30, the fourth pipeline 40 and the cleaning pipeline 50, water with SS less than 2500 and 50000mg/L, COD less than 500mg/L can be filtered, and the application range is wide.

The pipes mentioned in this application are all provided with valves including, but not limited to, a first pipe 11, a first branch 11, a second branch 12, a second pipe 20, a third pipe 30, a fourth pipe 40, a cleaning pipe 50, a first cleaning branch 51, a second cleaning branch 52, a cleaning return water circuit 53, a first flushing pipe 60, a second flushing pipe 70 and pipe connections on the device connected thereto. Ensuring that the cleaning and filtering cannot interfere with each other; on the other hand, the device or the pipeline mentioned in the application is also provided with a water pump for providing power for the circulating water.

In some embodiments of the present application, when the corresponding valve is opened, the raw water tank 100 delivers water to the first pipeline 10 through the water pump, and then flows through the circulation pump 201, the circulation pump 201 delivers wastewater to the water inlet of the ultrafiltration membrane 200, and then the water outlet of the ultrafiltration membrane 200 delivers water to the second water production tank 500 through the third pipeline 20, thereby completing the filtration of water. At this time, if the ultrafiltration membrane 200 needs to be washed, the water in the cleaning system 600 is conveyed to the cleaning pipeline 50, part of the first pipeline 10, the circulating pump 201 and the second pipeline 20 to enter the ultrafiltration membrane 200, and the circulating pump 201 continuously washes the surface of the ultrafiltration membrane 200 to finish the membrane cleaning.

Optionally, electromagnetic flow meters are disposed on the first pipeline 10 and the third pipeline 20 to monitor the flow rate and the flow velocity of the water flowing through in real time, and then adjust the flow rate and the flow velocity of the water in due time.

In some embodiments, the washing system 600 includes a washing water tank 601, and the washing line 50 includes: one end of the first cleaning branch 51 is connected with a water outlet of the cleaning water tank 601, and the other end is connected with a water inlet of the circulating pump 201; one end of the second cleaning branch 52 is connected with a water outlet of the cleaning water tank 601, and the other end of the second cleaning branch is connected with a water inlet of the reverse osmosis membrane 400.

In some embodiments of the present application, the washing system 600 includes a washing water tank 601, a corresponding valve is opened, water is delivered to the first washing branch 51 or the second washing branch 52 through a washing water pump in the washing water tank 601, wherein the ultrafiltration membrane 200 can be washed while being delivered to the first washing branch 51; when conveyed into the second cleaning branch 52, the reverse osmosis membrane 400 may be cleaned; the membranes are chemically cleaned by the cleaning action of the cleaning system 600 to restore the filtration performance of the membranes.

Optionally, a liquid level meter is further provided on the washing water tank 601 to monitor the volume of the washing liquid in the washing water tank 601 in real time. Optionally, the cleaning water tank 601 is a square water tank made of stainless steel, so that the occupied space is saved.

In some embodiments, the fourth pipeline 40 is provided with a second filter 301 and a reverse osmosis membrane 400, and the tail end of the fourth pipeline is connected with a second water production tank 500; wherein, the pipelines of the reverse osmosis membrane 400 and the second water production tank 500 are also connected with a filtering branch 701, and the tail end of the filtering branch 701 is connected with a concentrated water tank 700.

In some embodiments of the present application, the corresponding valve is opened, and the first water production tank 300 delivers water to the fourth pipeline 40 through the water pump, and then the water is filtered through the second filter 301 and the reverse osmosis membrane 400, and finally flows into the second water production tank 500, completing the water filtration. At this time, if the reverse osmosis membrane 400 needs to be washed, the water of the cleaning system 600 is sent to the second cleaning branch 52, and the cleaning of the membrane is completed.

Optionally, a filtering branch 701 is further connected to the pipeline of the reverse osmosis membrane 400 and the second water production tank 500, and a concentrated water tank 700 is connected to the end of the filtering branch 701 and is used for collecting waste materials and the like of the second filter 301 and the reverse osmosis membrane 400, wherein the second filter 301 is a cartridge filter.

In some embodiments, the filtration apparatus for wastewater further comprises: and one end of the cleaning water return path 53 is connected with the water outlet of the ultrafiltration membrane 200, and the other end is connected with a cleaning water tank 601. After the cleaning liquid for cleaning the water tank 601 passes through the ultrafiltration membrane 200, the cleaning liquid is conveyed back to the cleaning water tank 601 through the water outlet of the ultrafiltration membrane 200, so that the cleaning liquid can be effectively recovered, and resources are saved.

In this embodiment, the filtered water outlet of the ultrafiltration membrane 200 is used for delivering filtered wastewater, and the water outlet of the ultrafiltration membrane 200 is used for delivering unfiltered liquid.

In some embodiments, the first conduit 10 comprises: one end of the first branch 11 is connected with a water outlet of the raw water tank 100, and the other end is connected with a first water inlet of a first filter 101; one end of the second branch 12 is connected to the water outlet of the first filter 101, and the other end is connected to the water outlet of the circulation pump 201.

In some embodiments of the present application, the raw water tank 100 delivers water to the first branch 11 by means of a water pump, flows through the first filter 101, flows into the second branch 12, and finally flows through the circulation pump 201. Optionally, an external discharge valve is disposed in the first filter 101, and when the pressure in the first filter 101 reaches a certain value, the corresponding valve is opened, and through the improved nozzle, the suspended matter in the first filter 101 is flushed to the drainage ditch by using high-speed water.

In some embodiments, the filtration apparatus for wastewater further comprises: one end of the first flushing pipeline 60 is connected with a water outlet of the ultrafiltration membrane 200, and the other end of the first flushing pipeline is respectively connected with a water inlet of the raw water tank 100 and a second water inlet of the first filter 101.

In some embodiments of the application, ordinary filter needs artifical clearance filter screen after the pollutant reaches a definite value, through the first flushing line 60 that sets up, can utilize milipore filter 200's flying water to flow into first filter 101 from first flushing line 60, carries out the recoil to first filter 101's filter screen, and then reduces the number of times of artifical clearance. Meanwhile, the other end of the first flushing pipeline 60 is connected with the water inlet of the raw water tank 100, so that the operation energy consumption and the investment cost can be reduced to a certain extent.

In some embodiments, the filtration apparatus for wastewater further comprises: one end of the second flushing pipeline 70 is connected with a water outlet of the first water production tank 300, and the other end of the second flushing pipeline is connected to the second branch pipeline 12 respectively; the liquid in the second flushing line 70 flows through part of the second branch 12, the circulation pump 201 and the second line 20 into the ultrafiltration membrane 200. The ultrafiltration membrane 200 is cleaned by the filtrate collected by the first water production tank 300, so that the reverse osmosis membrane 400 can be effectively cleaned, and meanwhile, the cleaning liquid resource can be saved.

As shown in connection with fig. 2 and 3, in some embodiments, the filtering apparatus for wastewater further comprises: the box body 800 is internally provided with an installation rack 801, the reverse osmosis membrane 400 and the ultrafiltration membrane 200 are transversely arranged on the installation rack 801, and the reverse osmosis membrane 400 and the ultrafiltration membrane 200 are arranged side by side.

In some embodiments of the application, the traditional ultrafiltration membrane and the reverse osmosis membrane are vertically installed, so that the whole installation height is high and limited by the height, and part of small plants cannot be used; therefore, the reverse osmosis membrane 400 and the ultrafiltration membrane 200 are transversely arranged on the mounting frame 801, and compared with the traditional ultrafiltration membrane, the vertical space is effectively saved.

In some embodiments, the first water producing tank 300 and the second water producing tank 500 are disposed in the tank 800, and the tank 800 is provided with a dosing port 302 communicated with the first water producing tank 300.

In some embodiments of the present application, the device of the present filtering apparatus is installed in the box 800 in an integrated manner, and the drug adding pump is used to add the drug into the first water production tank 300 through the drug adding port 302, the drug and the wastewater are mixed, and the mixed wastewater passes through the second filter 301 to remove large suspended matters, so that the first water production tank 300 does not need to be stirred by a stirrer, thereby reducing the maintenance and repair costs of the device, and simultaneously facilitating the operation and transportation.

A second aspect of embodiments of the present disclosure also provides a filtration system comprising the filtration apparatus for wastewater of the preceding embodiments. Through the position relation adjustment of each device and the optimization of the pipeline, the water of the cleaning system 600 can clean the ultrafiltration membrane 200, so that the membrane pollution condition is avoided, the maintenance frequency is effectively reduced, and the maintenance cost is further reduced; meanwhile, aiming at high-turbidity wastewater, the frequency of replacing filter elements of the filter and the frequency of adding chemicals can be reduced. Therefore, the remote monitoring of the small-sized equipment can be realized, and unattended management can be performed.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and illustrated in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A filter apparatus for waste water, comprising:

one end of the first pipeline (10) is connected with a water outlet of the original water tank (100), and the other end of the first pipeline is connected with a water inlet of the circulating pump (201);

one end of the second pipeline (20) is connected with a water outlet of the circulating pump (201), and the other end of the second pipeline is connected with a water inlet of the ultrafiltration membrane (200);

one end of the third pipeline (30) is connected with a filtered water outlet of the ultrafiltration membrane (200), and the other end of the third pipeline is connected with a water inlet of the first water production tank (300);

one end of the fourth pipeline (40) is connected with a water outlet of the first water production tank (300), and the other end of the fourth pipeline is connected with a water inlet of the second water production tank (500);

a cleaning pipeline (50), one end of which is connected to the first pipeline (10), and the other end of which is connected with a cleaning system (600); and water of the cleaning system (600) flows through the cleaning pipeline (50), part of the first pipeline (10), the circulating pump (201) and the second pipeline (20) and enters the ultrafiltration membrane (200).

2. A filter device according to claim 1, wherein the washing system (600) comprises a washing water tank (601), and the washing line (50) comprises:

one end of the first cleaning branch (51) is connected with a water outlet of the cleaning water tank (601), and the other end of the first cleaning branch is connected with a water inlet of the circulating pump (201);

and one end of the second cleaning branch (52) is connected with a water outlet of the cleaning water tank (601), and the other end of the second cleaning branch is connected with a water inlet of the reverse osmosis membrane (400).

3. The filtering apparatus according to claim 2, wherein a second filter (301) and the reverse osmosis membrane (400) are arranged on the fourth pipeline (40), and the tail end of the fourth pipeline is connected with the second water production tank (500); the reverse osmosis membrane (400) and the second water production tank (500) are further connected with a filtering branch (701) on the pipeline, and the tail end of the filtering branch (701) is connected with a concentrated water tank (700).

4. The filtering apparatus of claim 2, further comprising:

and one end of the cleaning water return path (53) is connected with the water outlet of the ultrafiltration membrane (200), and the other end of the cleaning water return path is connected with the cleaning water tank (601).

5. A filtering device according to any one of claims 1 to 4, characterized in that said first circuit (10) comprises:

one end of the first branch (11) is connected with a water outlet of the raw water tank (100), and the other end of the first branch is connected with a first water inlet of a first filter (101);

and one end of the second branch (12) is connected with the water outlet of the first filter (101), and the other end of the second branch is connected with the water outlet of the circulating pump (201).

6. The filtering apparatus of claim 5, further comprising:

and one end of the first flushing pipeline (60) is connected with a water outlet of the ultrafiltration membrane (200), and the other end of the first flushing pipeline is respectively connected with a water inlet of the raw water tank (100) and a second water inlet of the first filter (101).

7. The filtering apparatus of claim 6, further comprising:

one end of the second flushing pipeline (70) is connected with a water outlet of the first water production tank (300), and the other end of the second flushing pipeline is connected to the second branch pipeline (12) respectively; and the liquid of the second flushing pipeline (70) flows through a part of the second branch pipeline (12), the circulating pump (201) and the second pipeline (20) and enters the ultrafiltration membrane (200).

8. The filtering apparatus of claim 2, further comprising:

the box body (800) is internally provided with an installation rack (801), the reverse osmosis membrane (400) and the ultrafiltration membrane (200) are transversely arranged on the installation rack (801), and the reverse osmosis membrane (400) and the ultrafiltration membrane (200) are arranged side by side.

9. The filtering apparatus according to claim 8, wherein the first water producing tank (300) and the second water producing tank (500) are disposed in the tank body (800), and a dosing port (302) communicating with the first water producing tank (300) is disposed on the tank body (800).

10. A filtration system comprising a filtration apparatus for wastewater according to any of claims 1 to 9.

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