CN223385955U - A purified water pretreatment system - Google Patents
A purified water pretreatment systemInfo
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- CN223385955U CN223385955U CN202422711587.9U CN202422711587U CN223385955U CN 223385955 U CN223385955 U CN 223385955U CN 202422711587 U CN202422711587 U CN 202422711587U CN 223385955 U CN223385955 U CN 223385955U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
本申请公开一种纯化水预处理系统，包括管式超滤罐、原水进水管路、浓水出水管路、产水出水管路、正洗管路和反洗管路，所述管式超滤罐填充有管式超滤膜，管式超滤罐一端为原水进水口，管式超滤罐另一端设有浓水出水接口，浓水出水接口与浓水出水管路连通，管式超滤罐的所述另一端侧壁设置有产水口，与所述产水出水管路连接，产水出水管路上连接有清洗水箱入口管路，清洗水箱入口管路连接至清洗水箱，从清洗水箱中分支出正洗管路连接至原水进水管路上。本申请无需砂滤、碳滤作为前段预处理，相对于传统的砂滤加中空纤维过滤工艺可节省50％占地。
The present application discloses a purified water pretreatment system, comprising a tubular ultrafiltration tank, a raw water inlet pipeline, a concentrate outlet pipeline, a produced water outlet pipeline, a forward wash pipeline, and a backwash pipeline. The tubular ultrafiltration tank is filled with a tubular ultrafiltration membrane, one end of the tubular ultrafiltration tank is a raw water inlet, the other end of the tubular ultrafiltration tank is provided with a concentrate outlet interface, the concentrate outlet interface is connected to the concentrate outlet pipeline, the other end sidewall of the tubular ultrafiltration tank is provided with a water outlet, connected to the produced water outlet pipeline, the produced water outlet pipeline is connected to a cleaning water tank inlet pipeline, the cleaning water tank inlet pipeline is connected to the cleaning water tank, and a forward wash pipeline branches from the cleaning water tank and is connected to the raw water inlet pipeline. The present application does not require sand filtration or carbon filtration as a front-end pretreatment, and can save 50% of land compared to the traditional sand filtration plus hollow fiber filtration process.
Description
Technical Field
The utility model belongs to the technical field of water treatment, and particularly relates to a purified water pretreatment system.
Background
The purified water device is one of important devices indispensable in the production of pharmaceutical industry, medical industry, food industry, chemical industry and the like, and the pretreatment system is used as an important component of the purified water device, and the function and principle of the pretreatment system have important functions for guaranteeing the stable operation of the purified water device and producing high-quality purified water.
The pretreatment system in the purified water equipment generally consists of a multi-medium filter, an activated carbon filter, a hollow fiber ultrafiltration membrane and the like, and is mainly used for removing impurities, suspended matters, organic matters, heavy metal ions and the like in raw water and providing qualified water quality for subsequent purification treatment.
The multi-medium filter is used for physically intercepting raw water by mainly utilizing filter materials with different particle sizes, removing suspended matters, colloid and other impurities in the raw water and improving the transparency of water quality. The activated carbon filter mainly utilizes the adsorption performance of activated carbon to remove organic matters, residual chlorine and other harmful substances in raw water, reduces the Total Organic Carbon (TOC) and Chemical Oxygen Demand (COD) of the water, and provides a good foundation for subsequent treatment. The hollow fiber membrane mainly uses the ultrafiltration filter aperture to remove bacterial microorganisms, suspended matters, particulate matters and organic macromolecular substances in water, prevents the reverse osmosis membrane from fouling and scaling, and prolongs the service life of the membrane.
The pretreatment system is used as a primary link of water purification equipment, and the effluent quality directly influences the efficiency of subsequent purification treatment and the service life of a membrane component. The qualified pretreated effluent can lighten the burden of subsequent treatment and improve the overall performance and the water production quality of the purified water equipment. Meanwhile, the pretreatment system can also protect the reverse osmosis membrane from pollution and damage, and reduce the replacement frequency and maintenance cost of the membrane assembly. Therefore, the rational configuration and optimization of the pretreatment system is one of the keys for the stable operation of the purified water device.
The traditional pure water pretreatment process generally adopts sand filtration, multi-medium filtration and hollow fiber membrane treatment, the process line is long, the equipment occupation is large, the filter material needs to be replaced periodically, the hollow fiber membrane is a self-supporting membrane, the structure is loose, the compressive strength is low, and the normal use is influenced by broken wires during the use. The hollow fiber membrane requires a sludge concentration of <6000ppm, and in the hollow fiber membrane filtration process, the influent water is required to have higher clarity and low suspended matter content.
In view of the above, a method for reducing the floor space as much as possible and improving the strength of the filter membrane has been desired.
Disclosure of utility model
The technical scheme adopted by the utility model is as follows:
A purified water pretreatment system, which comprises a tubular ultrafiltration tank, a raw water inlet pipeline, a concentrated water outlet pipeline, a produced water outlet pipeline, a forward washing pipeline and a reverse washing pipeline,
The tubular ultrafiltration tank is cylindrical, a tubular ultrafiltration membrane is filled in the tubular ultrafiltration tank, one end of the tubular ultrafiltration tank is a raw water inlet and is communicated with the water outlet of the raw water inlet pipeline, the other end of the tubular ultrafiltration tank is provided with a concentrated water outlet interface, the end part of each tubular ultrafiltration membrane is connected to the concentrated water outlet interface, the concentrated water outlet interface is communicated with the concentrated water outlet pipeline, the side wall of the other end of the tubular ultrafiltration tank is provided with a water producing port which is connected with the water producing outlet pipeline,
The raw water inlet pipeline is sequentially provided with a raw water inlet manual valve MV110, a raw water inlet check valve ZV101, a raw water inlet pneumatic valve AV104, a circulating pump WP1002 and a water inlet pressure gauge, raw water enters the tubular ultrafiltration tank through the raw water inlet pipeline,
A water production pressure meter, a water production and electricity flowmeter, a water production and electricity discharge pneumatic valve AV103 and a water production and electricity discharge manual valve MV109 are sequentially connected on the water production and electricity outlet pipeline, a cleaning water tank inlet pipeline is connected between the water production and electricity flowmeter and the water production and electricity discharge pneumatic valve AV103, the cleaning water tank inlet pipeline is connected to a cleaning water tank SX101, a water supplementing pneumatic valve AV106 is arranged on the cleaning water tank inlet pipeline,
A forward washing pipe branching from the washing water tank SX101 is connected to a pipe between the intake air valve AV104 and the raw water intake check valve ZV101, and a forward washing manual valve MV103 is installed on the forward washing pipe.
Optionally, a backwash pipeline is also branched from the cleaning water tank and connected to a pipeline between a water production pressure gauge and a water production flowmeter of the water production outlet pipeline, and a backwash manual valve MV101, a backwash pneumatic valve AV101, a backwash pump WP1001 and a backwash flowmeter are sequentially arranged on the backwash pipeline.
Optionally, the backwash pipeline and the normal washing pipeline and the cleaning water tank discharge pipeline and the cleaning water tank water outlet are respectively connected to four interfaces of the four-way valve.
Optionally, two discharge pipelines are further branched from the downstream of the water inlet pressure gauge of the raw water pipeline, one discharge pipeline is provided with a tank emptying pneumatic valve AV102, and the other discharge pipeline is provided with a tank emptying manual valve MV102.
Optionally, the concentrated water outlet pipeline is sequentially connected with a concentrated water electromagnetic flowmeter, a concentrated water pressure meter, a concentrated water discharge pneumatic valve AV105 and a concentrated water discharge manual valve MV108, and an exhaust valve for air discharge is also connected at the upstream of the concentrated water electromagnetic flowmeter.
Optionally, a concentrated water return cleaning water tank pipeline is branched between the concentrated water pressure gauge and the concentrated water discharge pneumatic valve AV105, and a forward cleaning backwater manual valve MV105 is arranged on the concentrated water return cleaning water tank pipeline.
Optionally, a concentrated water return raw water pipeline is further branched between the concentrated water pressure gauge and the concentrated water discharge pneumatic valve AV105 and is connected to a pipeline between the circulating pump WP1002 and the water inlet pneumatic valve AV104, and a circulating water quantity adjusting manual valve MV107 and a circulating water check valve ZV102 are installed on the concentrated water return raw water pipeline.
Optionally, the tubular ultrafiltration membrane is made of PVDF, and the filtration pore diameter is 30nm.
Optionally, the circulating pump and the backwash pump are variable frequency centrifugal pumps.
The utility model has the following beneficial effects:
(1) The purified water pretreatment system overcomes the requirement of the hollow fiber membrane on the quality of the inflow water, the concentration of the activated sludge of the tubular ultrafiltration membrane can be relatively high, and the pretreatment requirement on the feed liquid of the inflow membrane is low in the pressure filtration process of the tubular membrane, so that the purified water pretreatment system can be directly used for softening surface water, underground water, mine water, reclaimed water circulating water and the like. Therefore, sand filtration and carbon filtration are not needed as pretreatment of the front section, and compared with the traditional sand filtration and hollow fiber filtration process, the method can save 50% of land.
(2) The purified water pretreatment system adopts a sand-free pure water ultrafiltration process, directly adopts an organic tubular ultrafiltration membrane as a filtration system, and adopts non-woven fabrics as a supporting layer, so that the mechanical strength of the tubular ultrafiltration membrane is better.
(3) The filter element is a tubular ultrafiltration membrane, the equipment is stable and reliable, and the device is easy to clean after blockage.
(4) The pneumatic butterfly valve and the manual butterfly valve are arranged on a plurality of pipelines, so that the pneumatic butterfly valve can not be normally opened or closed due to power failure and electric failure of equipment, wherein parallel valves are adopted in pipelines with low water quantity and easy blockage, for example, on pipelines which are only used for occasional discharging, the AV102 and the MV102 are two valves which are connected in parallel, and when one valve has blockage failure, the valve on the other pipeline can be used for controlling the discharging of raw water. The pipelines which are easy to cause valve leakage due to large water quantity adopt valves connected in series, for example, a concentrated water outlet pipeline, a produced water outlet pipeline and a raw water inlet pipeline all have large water quantity. For example, AV105 and MV108 on the concentrate outlet line 200 are connected in series, and when one valve fails in leakage, the leakage of the line is still not caused, but the on-off of the line can be controlled by the other valve.
Drawings
The above-mentioned features and technical advantages of the present utility model will become more apparent and readily appreciated from the following description of the embodiments thereof, taken in conjunction with the accompanying drawings.
Fig. 1 is a process flow diagram of a purified water pretreatment system according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a tubular ultrafiltration tank according to an embodiment of the present application.
[ Reference numerals ]
The system comprises a tubular ultrafiltration tank GT100, a raw water inlet pipeline 100, a concentrated water outlet pipeline 200, a produced water outlet pipeline 300, a forward washing pipeline 400, a backwashing pipeline 500, a raw water inlet manual valve MV110, a raw water inlet check valve ZV101, an inlet pneumatic valve AV104, a circulating pump WP1002, a water inlet pressure gauge P102, a produced water pressure gauge P101, a produced water electromagnetic flowmeter A102, a produced water discharge pneumatic valve AV103, a produced water discharge manual valve MV109, a cleaning water tank SX101, a water supplementing pneumatic valve AV106, a concentrated water electromagnetic flowmeter A101, a concentrated water pressure gauge P103, a concentrated water discharge pneumatic valve AV105, a concentrated water discharge manual valve MV108, an exhaust valve V101, a forward washing manual valve MV105, a circulating water quantity adjusting manual valve MV107, a circulating water check valve ZV102, a forward washing manual valve MV103, a backwashing manual valve MV101, a backwashing pneumatic valve AV101, a pump WP1001, a flowmeter A103, a water tank emptying manual valve MV106, a tank emptying pneumatic valve AV102, a tank emptying manual valve 103, a tank body emptying valve 103, a water inlet 101, a water inlet of the produced water GT101, a reverse washing machine water outlet port GT101 and a filter membrane interface.
Detailed Description
Embodiments of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art will recognize that the described embodiments may be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive in scope. Furthermore, in the present specification, the drawings are not drawn to scale, and like reference numerals denote like parts.
The embodiment provides a purified water pretreatment system, including purified water pretreatment filtration system and washing backwash system, filtration system is by the raw water entering organic tubular ultrafiltration jar through circulating pump pressurization, organic tubular ultrafiltration jar wholly is the barrel structure, internal pressure formula organic tubular ultrafiltration membrane is densely distributed in the barrel, jar body upper end flange seals, raw water is sent into from the bottom and is got into tubular ultrafiltration jar through circulating pump, produce water filters out and gathers and get into the water tank from jar body upper end outside water production pipeline outside head through the water conservancy diversion, concentrate flows out from jar body top, partly reentrant raw water pipeline through pipeline valve control, can be through circulating pump recirculation filtration with the raw water, another part concentrate is discharged through pipeline valve control. In order to lighten the influence of membrane pollution in the filtration operation process, a cleaning and backwashing system is required to be regularly carried out, a common water production tank is used as a cleaning and backwashing water tank, a water production tank control valve is opened during cleaning, produced water enters an ultrafiltration tank through a circulating pump to positively flush membrane pipes in the tank, the cleaning water enters a water production pipeline at the outer side of the ultrafiltration tank through a pipeline valve during backwashing, backwash water is injected into the outer side of an organic membrane tank of the tank body through a pipeline, the organic tubular membrane is backwashed through the action of water flow pressure, the operation is stopped after a period of backwashing, and the normal filtration operation state is switched again.
As shown in fig. 1, the purified water pretreatment system comprises a tubular ultrafiltration tank GT100, a raw water inlet pipeline 100, a concentrated water outlet pipeline 200, a produced water outlet pipeline 300, a forward washing pipeline 400 and a reverse washing pipeline 500.
The tubular ultrafiltration tank GT100 is of a stainless steel cylindrical barrel structure, a plurality of tubular ultrafiltration membranes, which can be organic tubular ultrafiltration membranes, are densely distributed in the barrel, the lower part of the barrel is a raw water inlet which is communicated with the water outlet of the raw water inlet pipeline 100, raw water enters the tubular ultrafiltration tank from the bottom and then is distributed into the organic tubular ultrafiltration membranes, and produced water and concentrated water are discharged through the filtration of the organic tubular ultrafiltration membranes.
Specifically, the raw water inlet pipeline 100 may be sequentially provided with a raw water inlet manual valve MV110, a raw water inlet check valve ZV101, an inlet pneumatic valve AV104, a circulating pump WP1002, and an inlet pressure gauge P102, and raw water may enter the tubular ultrafiltration tank through the raw water inlet pipeline 100. Raw water entering the tubular ultrafiltration tank further enters an organic tubular ultrafiltration membrane, and the raw water is filtered through the organic tubular ultrafiltration membrane.
The upper side wall of the tubular ultrafiltration tank GT100 is provided with a water producing port which is connected with a water producing and discharging pipeline 300. The water producing outlet pipeline 300 is connected to a water producing water tank (not shown), the water producing pressure gauge P101, the water producing electromagnetic flowmeter a102, the water producing and discharging pneumatic valve AV103 and the water producing and discharging manual valve MV109 are sequentially connected to the water producing outlet pipeline 300, a cleaning water tank inlet pipeline is connected between the water producing electromagnetic flowmeter a102 and the water producing and discharging pneumatic valve AV103, and the cleaning water tank inlet pipeline is connected to the cleaning water tank SX101. A water supplementing pneumatic valve AV106 is arranged on the inlet pipeline of the cleaning water tank, and the water supplementing pneumatic valve AV106 controls the amount of water entering the cleaning water tank (cleaning and backwashing water tank) SX101 in the produced water.
The concentrated water outlet is positioned at the central position of the upper end of the tubular ultrafiltration tank, the upper end parts of the organic tubular ultrafiltration membranes are connected to the concentrated water outlet at the upper end of the tubular ultrafiltration tank, and the concentrated water outlet is communicated with the concentrated water outlet pipeline 200. The concentrated water passing through the organic tubular ultrafiltration membrane flows to a concentrated water outlet port in the center of the upper end of the tubular ultrafiltration tank and enters the concentrated water outlet pipeline 200.
The concentrated water outlet port of the tubular ultrafiltration tank GT100 is connected with a concentrated water outlet pipeline 200, and the concentrated water outlet pipeline 200 is sequentially connected with a concentrated water flowmeter A101, a concentrated water pressure meter P103, a concentrated water discharge pneumatic valve AV105 and a concentrated water discharge manual valve MV108. Further, in particular, an exhaust valve V101 is also connected upstream of the concentrated water flowmeter a101 for air discharge. A concentrated water return cleaning water tank pipeline branches between the concentrated water pressure gauge P103 and the concentrated water discharge pneumatic valve AV105, and a forward washing backwater manual valve MV105 is arranged on the concentrated water return cleaning water tank pipeline. After the concentrated water enters the concentrated water outlet pipeline 200, a part of the concentrated water is discharged through the forward washing backwater manual valve AV105 and the concentrated water discharging manual valve MV108 according to the water production operation condition, and the other part of the concentrated water can return to the washing water tank pipeline through the concentrated water and enter the washing water tank SX 101. A concentrated water return raw water pipeline is also branched between the concentrated water pressure gauge P103 and the concentrated water discharge pneumatic valve AV105 and is connected to a pipeline between the circulating pump WP1002 and the intake pneumatic valve AV 104. The concentrated water return raw water pipeline is provided with a circulating water quantity adjusting manual valve MV107 and a circulating water check valve ZV102. The circulating water check valve ZV102 controls the quantity of the concentrated water returned into the raw water pipeline through the circulating water quantity adjusting manual valve MV107, and the concentrated water and the raw water are returned into the circulating pump for ultrafiltration and filtration operation.
In order to reduce the influence of membrane pollution in the filtration operation process, a cleaning and backwashing system is required to be regularly carried out, and a cleaning water tank SX101 is used as a water tank shared by cleaning and backwashing. A forward washing pipe branching from the washing water tank SX101 is connected to a pipe between the intake air valve AV104 and the raw water intake check valve ZV101, in order to realize forward washing automation by the intake air valve AV104 at the time of forward washing, and the raw water intake check valve ZV101 can prevent water from leaking. A forward-washing manual valve MV103 is installed on the forward-washing pipeline. The produced water in the cleaning water tank SX101 is pumped into the ultrafiltration tank by a circulating pump WP1002 for each batch of water to be treated or for a period of time to positively flush the organic film tube in the tank. When in cleaning, the forward washing hand valve MV103 at the outlet of the cleaning water tank SX101 is opened, produced water enters the circulating pump through a pipeline and enters the ultrafiltration tank to forward flush the membrane pipe in the tank under pressure, forward flushing concentrated water is output by the concentrated water pipe at the upper part of the ultrafiltration tank, the forward washing backwater manual valve MV105 is closed, and the concentrated water discharge pneumatic valve AV105 and the concentrated water discharge manual valve MV108 are opened to directly discharge the flushing concentrated water.
A backwash line is also branched from the flush tank SX101 and connected to the line between the produced water pressure gauge P101 and the produced water flowmeter a102 of the produced water outlet line 300. A backwash manual valve MV101, a backwash pneumatic valve AV101, a backwash pump WP1001 and a backwash flowmeter a103 are installed in this order on the backwash pipeline. During regular backwashing, a backwashing pneumatic valve AV101 and a backwashing manual valve MV101 at the outlet of the cleaning water tank SX101 are opened, produced water enters a backwashing pump WP101 through pipeline valve control, the cleaning water enters an ultrafiltration tank through a produced water outlet pipeline under pressurization of the backwashing pump, backwash water enters the inner side of the organic tubular ultrafiltration membrane from the outer side of the organic tubular ultrafiltration membrane, backwashing is carried out on the organic tubular ultrafiltration membrane under the action of water flow pressure, backwash produced water enters a concentrated water pipeline through a concentrated water pipeline at the top of the ultrafiltration tank, a normal washing backwater manual valve MV105 is closed, and a concentrated water discharge pneumatic valve AV105 and a concentrated water discharge manual valve MV108 are opened to directly discharge flushing concentrated water.
And the backwash pipeline, the normal washing pipeline, the cleaning water tank discharge pipeline and the cleaning water tank interface are respectively connected to four interfaces of the four-way valve. A tank drain manual valve MV106 is mounted on the purge tank drain line.
Two discharge lines are branched from the raw water line 100 downstream of the P102, one of which is provided with a tank-emptying pneumatic valve AV102, and the other of which is provided with a tank-emptying manual valve MV102.
The pneumatic butterfly valves and the manual butterfly valves are arranged on the pipelines, and the pneumatic butterfly valves mainly serve to prevent equipment from being opened and closed normally due to power failure and electrical failure, and the pipelines can be operated by adopting the manual valves. The parallel valves are used in pipelines with less water volume easy to be blocked, for example, the tank emptying pneumatic valve AV102 and the tank emptying manual valve MV102 are two valves in parallel, and when one valve fails to be blocked, the valve on the other pipeline can be used for controlling the discharge of raw water. The valves connected in series are used in pipelines in which the water quantity is easy to cause valve leakage, for example, the pneumatic valve AV105 for discharging the concentrated water and the manual valve MV108 for discharging the concentrated water on the water outlet pipeline 200 are connected in series, when one valve has leakage fault, the pipeline can not be leaked, and the on-off of the pipeline can be controlled through the other valve.
Optionally, the ultrafiltration tank is densely covered with an organic tubular ultrafiltration membrane as a filter element, the material of the organic tubular ultrafiltration membrane is PVDF (polyvinylidene fluoride), and the filter aperture is 30nm.
Optionally, the organic tubular ultrafiltration membrane used by the ultrafiltration tank is a special organic membrane tank capable of resisting negative 1KGF pressure.
Optionally, the circulating pump is a centrifugal pump, and the flow and the pressure can be adjusted in a variable frequency manner.
Optionally, the backwash pump is a high-flow low-pressure variable frequency centrifugal pump.
Alternatively, the wash tank may be used both as a produced water collection and for washing the backwash tank.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. A purified water pretreatment system is characterized by comprising a tubular ultrafiltration tank, a raw water inlet pipeline, a concentrated water outlet pipeline, a produced water outlet pipeline, a forward washing pipeline and a reverse washing pipeline,
The tubular ultrafiltration tank is cylindrical, a tubular ultrafiltration membrane is filled in the tubular ultrafiltration tank, one end of the tubular ultrafiltration tank is a raw water inlet and is communicated with the water outlet of the raw water inlet pipeline, the other end of the tubular ultrafiltration tank is provided with a concentrated water outlet interface, the end part of each tubular ultrafiltration membrane is connected to the concentrated water outlet interface, the concentrated water outlet interface is communicated with the concentrated water outlet pipeline, the side wall of the other end of the tubular ultrafiltration tank is provided with a water producing port which is connected with the water producing outlet pipeline,
The raw water inlet pipeline is sequentially provided with a raw water inlet manual valve (MV 110), a raw water inlet check valve (ZV 101), an inlet pneumatic valve (AV 104), a circulating pump (WP 1002) and an inlet pressure gauge, raw water enters the tubular ultrafiltration tank through the raw water inlet pipeline,
A water production pressure meter, a water production and electrolysis flowmeter, a water production and discharge pneumatic valve (AV 103) and a water production and discharge manual valve (MV 109) are sequentially connected on the water production and discharge pipeline, a cleaning water tank inlet pipeline is connected between the water production and electrolysis flowmeter and the water production and discharge pneumatic valve (AV 103), the cleaning water tank inlet pipeline is connected to a cleaning water tank (SX 101), a water supplementing pneumatic valve (AV 106) is arranged on the cleaning water tank inlet pipeline,
A forward washing pipeline branches from the washing water tank (SX 101) and is connected to a pipeline between the water inlet pneumatic valve (AV 104) and the raw water inlet check valve (ZV 101), and a forward washing manual valve (MV 103) is arranged on the forward washing pipeline.
2. The purified water pretreatment system according to claim 1, wherein a backwash line is branched from the purge water tank and connected to a line between a water pressure gauge and a water flow meter of the produced water outlet line, and a backwash manual valve (MV 101), a backwash pneumatic valve (AV 101), a backwash pump (WP 1001), and a backwash flow meter are sequentially installed on the backwash line.
3. The purified water pretreatment system according to claim 2, wherein the backwash piping and the forward wash piping and the wash tank discharge piping and the wash tank water outlet are connected to four ports of a four-way joint, respectively.
4. The purified water pretreatment system according to claim 1, wherein two discharge lines are branched from a downstream of the raw water inlet pressure gauge, one discharge line having a tank-draining pneumatic valve (AV 102) mounted thereon and one discharge line having a tank-draining manual valve (MV 102) mounted thereon.
5. The purified water pretreatment system according to claim 1, wherein a concentrated water flowmeter, a concentrated water pressure meter, a concentrated water discharge pneumatic valve (AV 105), a concentrated water discharge manual valve (MV 108) are connected in this order on the concentrated water outlet line, and an exhaust valve for air discharge is further connected upstream of the concentrated water flowmeter.
6. The purified water pretreatment system according to claim 5, characterized in that a concentrated water return purge tank line branches off between the concentrated water pressure gauge and the concentrated water discharge pneumatic valve (AV 105), and a forward wash backwater manual valve (MV 105) is provided on the concentrated water return purge tank line.
7. The purified water pretreatment system according to claim 5, further comprising a concentrated water return raw water line connected between the circulating pump (WP 1002) and the inlet air valve (AV 104) and branched between the concentrated water pressure gauge and the concentrated water discharge air valve (AV 105), wherein a circulating water amount adjusting manual valve (MV 107) and a circulating water check valve (ZV 102) are installed on the concentrated water return raw water line.
8. The purified water pretreatment system according to claim 1, wherein the tubular ultrafiltration membrane is made of PVDF, and has a filtration pore size of 30nm.
9. The purified water pretreatment system according to claim 2, wherein the circulation pump and the backwash pump are variable frequency centrifugal pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422711587.9U CN223385955U (en) | 2024-11-07 | 2024-11-07 | A purified water pretreatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422711587.9U CN223385955U (en) | 2024-11-07 | 2024-11-07 | A purified water pretreatment system |
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| CN223385955U true CN223385955U (en) | 2025-09-26 |
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