CN207659200U - Cross-flow loop ultrafiltration system - Google Patents
Cross-flow loop ultrafiltration system Download PDFInfo
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- CN207659200U CN207659200U CN201721631327.4U CN201721631327U CN207659200U CN 207659200 U CN207659200 U CN 207659200U CN 201721631327 U CN201721631327 U CN 201721631327U CN 207659200 U CN207659200 U CN 207659200U
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- ultrafiltration
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Abstract
The utility model discloses a kind of cross-flow loop ultrafiltration systems, including the self-cleaning filtering unit, a cross-flow loop ultrafiltration unit and a control unit being sequentially connected, wherein, self-cleaning filtering unit is connected to the sand filtering device of its upstream, and cross-flow loop ultrafiltration unit includes a circulating pump, a hyperfiltration membrane assembly, ultrafiltration production water pot and a backwash component.The cross-flow loop ultrafiltration system of the utility model realizes 2~3 times of circular flow by the design of internal circulation pump, to improve film surface flow velocity, reduce the pollution of organic matter, make system stable operation, in the case where influent COD is up to 600ppm, hyperfiltration membrane assembly therein still can stable operation 3 months or more.
Description
Technical field
The utility model belongs to hyperfiltration technique field, and in particular to a kind of cross-flow loop ultrafiltration system.
Background technology
In the prior art, partly pass through the COD higher of the raw water of sand coarse aggregate ratio part, or even up to 600ppm or more.Tradition
Ultrafiltration design can pollute serious, a series of problems, such as cleaning is frequent, and water yield is insufficient, film core reduced lifetime.
Utility model content
The purpose of the utility model is to overcome prior art defects, provide a kind of cross-flow loop ultrafiltration system.
The technical solution of the utility model is as follows：
A kind of cross-flow loop ultrafiltration system, including the self-cleaning filtering unit, the cross-flow loop ultrafiltration list that are sequentially connected
Member and a control unit, wherein self-cleaning filtering unit is connected to the sand filtering device of its upstream, and cross-flow loop ultrafiltration unit includes：
One circulating pump；
One hyperfiltration membrane assembly has a ultrafiltration water inlet, ultrafiltration production water out and concentrated water outlet；
Water pot is produced in one ultrafiltration, has a production water inlet；
Backwash dosing pump and a connection ultrafiltration with a backwash component, including one chemical agent is added produce the super of water pot
Filter backwashing pump；
The water inlet of above-mentioned circulating pump is connected to the water outlet of self-cleaning filtering unit by the first automatic valve, circulating pump
Water outlet is connected to the ultrafiltration water inlet of hyperfiltration membrane assembly, the production water of the ultrafiltration production water out and ultrafiltration production water pot of hyperfiltration membrane assembly
Import is connected to by the second automatic valve；The water inlet that the concentrated water outlet of hyperfiltration membrane assembly passes through a concentrate recirculation pipeline and circulating pump
Connection passes through one first by backwash discharge pipe and a concentrated water discharge pipeline connection secondary wastewater collecting pit in parallel one
It cleans return line and is connected to ultrafiltration cleaning case, wherein concentrate recirculation pipeline, upper backwash discharge pipe, concentrated water discharge pipeline and the
One cleaning return line is respectively equipped with third to the 6th automatic valve；Backwash dosing pump and hyperfiltration reverse-rinsing pump clean back by second
Flow tube road and the 7th automatic valve on the second cleaning return line are connected to ultrafiltration cleaning case；The ultrafiltration of hyperfiltration membrane assembly
Water inlet is connected to secondary wastewater collecting pit by backwash discharge pipe once, and it is automatic which is equipped with the 8th
Valve；Control unit is electrically connected with circulating pump, backwash dosing pump, hyperfiltration reverse-rinsing pump and the first to the 8th automatic valve respectively, is made described
A backwash is carried out after the filtering of 25~60min of cross-flow loop ultrafiltration system progress, and is passed through after carrying out 12~24 backwashes
The aqueous energy of production that chemical agent carries out soaking flushing to restore hyperfiltration membrane assembly is added in backwash dosing pump；Ultrafiltration therein is to come from
The raw water of self-cleaning filtering unit enters in hyperfiltration membrane assembly, and the concentrated water of first part is back to cycle by concentrate recirculation pipeline
The concentrated water of the water inlet of pump, second part enters secondary wastewater collecting pit by concentrated water discharge pipeline, the concentrated water of first part
Amount of the amount more than the concentrated water of second part；Backwash therein is to pump the ultrafiltration production water that water pot is produced from ultrafiltration by hyperfiltration reverse-rinsing
Enter from the ultrafiltration of hyperfiltration membrane assembly production water out, reversely film surface deposit therein is rinsed to restore membrane filterability
Energy.
In a preferred embodiment of the utility model, hyperfiltration reverse-rinsing pump by a backwash filter with it is described
7th automatic valve is connected to.
It is further preferred that described in the liquid pumped from backwash dosing pump and hyperfiltration reverse-rinsing is connected to by a pipe-line mixer
7th automatic valve.
In a preferred embodiment of the utility model, the ultrafiltration of the water outlet and hyperfiltration membrane assembly of the circulating pump
Pipeline among water inlet is equipped with one first check valve.
In a preferred embodiment of the utility model, the ultrafiltration membrane in the hyperfiltration membrane assembly is super for doughnut
Filter membrane.
In a preferred embodiment of the utility model, the caliber of the concentrate recirculation pipeline is the concentrated water discharge
3~4 times of the caliber of pipeline.
In a preferred embodiment of the utility model, it is all provided on the concentrated water discharge pipeline and concentrate recirculation pipeline
There is suspended body flowmeter.
Further include a ultrafiltration cleaning being electrically connected with control unit in a preferred embodiment of the utility model
Pump, is connected to by a chemical cleaning inlet pipeline with the ultrafiltration water inlet of the hyperfiltration membrane assembly, the chemical cleaning inlet pipeline
It is equipped with the 9th automatic valve being electrically connected with control unit.
In a preferred embodiment of the utility model, the ultrafiltration of the circulating pump and the hyperfiltration membrane assembly is intake
One compressed air line of pipeline connection between mouthful.
The beneficial effects of the utility model：
1, the cross-flow loop ultrafiltration system of the utility model realizes 2~3 times of circular flow by the design of internal circulation pump,
To improve film surface flow velocity, the pollution of organic matter is reduced so that system stable operation is up to the feelings of 600ppm in influent COD
Under condition, hyperfiltration membrane assembly therein still can stable operation 3 months or more.
2, to retain the possible remnants' of pre-treatment before the self-cleaning filtering unit of the utility model is set to hyperfiltration membrane assembly
The impurity such as bulk dross, solid particle prevent these impurity damage film layers.
3, the hyperfiltration membrane assembly of the utility model is run using cross-flow filtration mode, and production water enters ultrafiltration production water pot, concentrated water
Major part is back to pump entry, and the fine colloid pollution object contained in water is trapped within film wire outer surface.
4, the utility model whole system is designed as Automatic Control, and setting program carries out normal filtration, water backwashing,
EFM and offline chemical cleaning；The water that backwash and EFM are generated is discharged into existing biochemical system, can re-use, and reduces outer
Draining.
5, the utility model in rinsing membrane module, membrane module is unnecessary to separate apparatus body
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
The technical solution of the utility model is further detailed below by way of specific implementation mode combination attached drawing and
Description.
Embodiment 1
As shown in Figure 1, a kind of cross-flow loop ultrafiltration system, including be sequentially connected a self-cleaning filtering unit 1, a cross-flow
Loop ultrafiltration unit 2 and a control unit (not shown), wherein self-cleaning filtering unit 1 is connected to the sand filtration dress of its upstream
It sets, cross-flow loop ultrafiltration unit 2 includes a circulating pump 21, a hyperfiltration membrane assembly 22, ultrafiltration production water pot 23 and a backwash component
24。
Hyperfiltration membrane assembly 22 has a ultrafiltration water inlet 220, ultrafiltration production water out 221 and concentrated water outlet 222, therein
Ultrafiltration membrane is hollow fiber ultrafiltration membrane；
Water pot 23 is produced in ultrafiltration has a production water inlet 230；
Backwash component 24 is connected to ultrafiltration production water pot 23 the backwash dosing pump 241 of chemical agent is added including one with one
Hyperfiltration reverse-rinsing pump 242；
The water inlet of above-mentioned circulating pump 21 connects 201 by the first automatic valve with the water outlet of self-cleaning filtering unit 1 and leads to, and follows
The water outlet of ring pump 21 is connected to the ultrafiltration water inlet 220 of hyperfiltration membrane assembly 22, meanwhile, the water outlet and ultrafiltration membrane of circulating pump 21
Pipeline among the ultrafiltration water inlet 220 of component 22 is equipped with one first check valve 210, and circulating pump 21 and hyperfiltration membrane assembly 22
Ultrafiltration water inlet 220 between one compressed air inflatable drainage pipeline 211 of pipeline connection；In addition a ultrafiltration cleaning pump 212 is logical
It crosses a chemical cleaning inlet pipeline 213 to be connected to the ultrafiltration water inlet 220 of hyperfiltration membrane assembly 22, on the chemical cleaning inlet pipeline
The 9th automatic valve 209 being electrically connected with control unit equipped with one.
The ultrafiltration production water out 221 of hyperfiltration membrane assembly 22 and the production water inlet 230 of ultrafiltration production water pot 23 are automatic by second
Valve 202 is connected to；The concentrated water outlet 222 of hyperfiltration membrane assembly 22 is connected by the water inlet of a concentrate recirculation pipeline 223 and circulating pump 21
It is logical, secondary wastewater collecting pit 226 is connected to a concentrated water discharge pipeline 225 by backwash discharge pipe 224 in parallel one, is passed through
One first cleaning return line 227 is connected to ultrafiltration cleaning case 228, wherein concentrate recirculation pipeline 223, upper backwash discharge pipe
224, concentrated water discharge pipeline 225 and first cleans return line 227 and is respectively equipped with third to the 6th automatic valve 203~206, concentrated water
It is equipped with suspended body flowmeter on discharge pipe 225 and concentrate recirculation pipeline 223.Preferably, the caliber of concentrate recirculation pipeline 223 is
3~4 times of the caliber of the concentrated water discharge pipeline 225.
Backwash dosing pump 241 and hyperfiltration reverse-rinsing pump 242 are by the second cleaning return line 243 and set on second cleaning
The 7th automatic valve 207 on return line 243 is connected to ultrafiltration cleaning case 228, and hyperfiltration reverse-rinsing pump 242 passes through a backwash filter
244 are connected to the 7th automatic valve 207, wherein the liquid from backwash dosing pump 241 and hyperfiltration reverse-rinsing pump 242 passes through one
Pipe-line mixer 245 is connected to；
The ultrafiltration water inlet 220 of hyperfiltration membrane assembly 22 is connected to secondary wastewater collecting pit by backwash discharge pipe 229 once
226, which is equipped with the 8th automatic valve 208；
Control unit respectively with circulating pump 21, backwash dosing pump 241, hyperfiltration reverse-rinsing pump 242, ultrafiltration cleaning pump 212 and the
One to the 8th automatic valve 201~208 is electrically connected, and is carried out after so that the cross-flow loop ultrafiltration system is carried out the ultrafiltration of 25~60min
Backwash, and after carrying out 12~24 backwashes by backwash dosing pump 241 be added chemical agent (preferably NaClO, NaOH and
HCl the aqueous energy of production for) carrying out soaking flushing to restore hyperfiltration membrane assembly 22；Ultrafiltration therein is to come from self-cleaning filtering unit 1
Raw water enter in hyperfiltration membrane assembly 22, the concentrated water of first part by concentrate recirculation pipeline 223 be back to circulating pump 21 into
The concentrated water at the mouth of a river, second part enters secondary wastewater collecting pit 226 by concentrated water discharge pipeline 225, the concentrated water of first part
Amount of the amount more than the concentrated water of second part；Backwash therein is that the ultrafiltration production water that water pot 23 is produced from ultrafiltration is passed through hyperfiltration reverse-rinsing
Pump 242 enters from the ultrafiltration of hyperfiltration membrane assembly 22 production water out 221, is reversely rinsed film surface deposit therein to restore
Membrane filtration characteristic.
The operating process of the utility model is as follows：
(1) before ultrafiltration normally produces water, the exhaust of main line water-filling is first passed through, enters back into 22 water-filling of hyperfiltration membrane assembly row
Gas, 22 vent sequence of hyperfiltration membrane assembly are as follows：1, the gas in first both sides water inlet row's membrane tube；2, in unilateral water inlet discharge film wire
Gas, it is formal to enter production water program to ensure that the gas in hyperfiltration membrane assembly 22 is all discharged.
(2) when filter cycle or transmembrane pressure reach setting value, control unit control system automatically into backwash process,
Corresponding inlet valve and production water valve are closed, backwash inlet valve and backwash drain valve are opened, starts hyperfiltration reverse-rinsing pump 242, opens simultaneously
It is dynamic selected the backwash dosing pump 241 of sodium hypochlorite and sodium hydroxide (or hydrochloric acid) is added, backwash overall process terminates, system
Automatically into filter cycle, continue normal production water；
(3) when number of backwashes arrival setting value or fouling membrane are heavier, production water flow is relatively low, in last time backwash knot
Shu Shi first opens the 4th to the 8th automatic valve 204~208 automatically into dispersion cleaning process, starts hyperfiltration reverse-rinsing pump 242, together
Shi Qidong it is selected the backwash dosing pump 241 of sodium hypochlorite and sodium hydroxide (or hydrochloric acid) is added, to hyperfiltration membrane assembly 22
Interior dosing, after the completion of administration timing of drug, all valves of closing assembly impregnate film wire with medicament, after the completion of soaking time, then
Automatically a backwash process is carried out, into filter cycle, continues normal production water；
(4) when membrane module pollution is more serious, after conventional backwash and dispersion cleaning for several times, membrane flux recovery cannot still meet life
Production requires, and need to carry out offline chemical cleaning.Hyperfiltration membrane assembly 22 shutdown after, open for chemical cleaning the corresponding 9th from
Dynamic valve 209, third automatic valve 203 and the second automatic valve 202, prepare cleaning solution in ultrafiltration purge tank, start ultrafiltration cleaning pump
212 carry out wash cycles, are impregnated and recycled cleaning when necessary, and membrane flux is cleaned and restore to strengthen.
In summary it describes, it, generally can be according to the work shape residing for it when the ultrafiltration system in the utility model works
State is divided into：Operation, backwash, disperse chemical cleaning and offline chemical cleaning.Operation therein, backwash, disperse chemical cleaning are
On-line automatic progress, offline chemical cleaning manual operation.
The above, the only preferred embodiment of the utility model, therefore the utility model implementation cannot be limited according to this
Range all should still belong to this practicality that is, according to equivalent changes and modifications made by the utility model patent range and description
It is novel cover in the range of.
Claims (5)
1. cross-flow loop ultrafiltration system, it is characterised in that：It is super including the self-cleaning filtering unit that is sequentially connected, cross-flow cycle
Filter unit and a control unit, wherein self-cleaning filtering unit is connected to the sand filtering device of its upstream, cross-flow loop ultrafiltration unit packet
It includes：
One circulating pump；
One hyperfiltration membrane assembly has a ultrafiltration water inlet, ultrafiltration production water out and concentrated water outlet；
Water pot is produced in one ultrafiltration, has a production water inlet；
It is anti-to the ultrafiltration that the backwash dosing pump and a connection ultrafiltration production water pot of chemical agent is added with a backwash component, including one
Wash pump；
The water inlet of above-mentioned circulating pump is connected to the water outlet of self-cleaning filtering unit by the first automatic valve, the water outlet of circulating pump
Mouth is connected to the ultrafiltration water inlet of hyperfiltration membrane assembly, the production water inlet of the ultrafiltration production water out and ultrafiltration production water pot of hyperfiltration membrane assembly
It is connected to by the second automatic valve；The concentrated water outlet of hyperfiltration membrane assembly is connected by the water inlet of a concentrate recirculation pipeline and circulating pump
It is logical, it is clear by one first by backwash discharge pipe and a concentrated water discharge pipeline connection secondary wastewater collecting pit in parallel one
Wash return line connection ultrafiltration cleaning case, wherein concentrate recirculation pipeline, upper backwash discharge pipe, concentrated water discharge pipeline and first
Cleaning return line is respectively equipped with third to the 6th automatic valve；Backwash dosing pump and hyperfiltration reverse-rinsing pump are flowed back by the second cleaning
Pipeline and the 7th automatic valve on the second cleaning return line are connected to ultrafiltration cleaning case；The ultrafiltration of hyperfiltration membrane assembly into
The mouth of a river is connected to secondary wastewater collecting pit by backwash discharge pipe once, which is equipped with the 8th automatic valve；
Control unit is electrically connected with circulating pump, backwash dosing pump, hyperfiltration reverse-rinsing pump and the first to the 8th automatic valve respectively, makes the cross-flow
A backwash is carried out after the ultrafiltration of 25~60min of loop ultrafiltration system progress, and passes through backwash after carrying out 12~24 backwashes
The aqueous energy of production that chemical agent carries out soaking flushing to restore hyperfiltration membrane assembly is added in dosing pump.
2. cross-flow loop ultrafiltration system as described in claim 1, it is characterised in that：The hyperfiltration reverse-rinsing pump passes through a backwash
Filter is connected to the 7th automatic valve.
3. cross-flow loop ultrafiltration system as claimed in claim 2, it is characterised in that：It is pumped from backwash dosing pump and hyperfiltration reverse-rinsing
Liquid pass through a pipe-line mixer and be connected to the 7th automatic valve.
4. cross-flow loop ultrafiltration system as described in claim 1, it is characterised in that：Further include one being electrically connected with control unit
Ultrafiltration cleaning pump is connected to by a chemical cleaning inlet pipeline with the ultrafiltration water inlet of the hyperfiltration membrane assembly, the chemical cleaning
Inlet pipeline is equipped with the 9th automatic valve being electrically connected with control unit.
5. cross-flow loop ultrafiltration system as described in claim 1, it is characterised in that：The circulating pump and the hyperfiltration membrane assembly
Ultrafiltration water inlet between one compressed air line of pipeline connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721631327.4U CN207659200U (en) | 2017-11-29 | 2017-11-29 | Cross-flow loop ultrafiltration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721631327.4U CN207659200U (en) | 2017-11-29 | 2017-11-29 | Cross-flow loop ultrafiltration system |
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| Publication Number | Publication Date |
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| CN207659200U true CN207659200U (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721631327.4U Active CN207659200U (en) | 2017-11-29 | 2017-11-29 | Cross-flow loop ultrafiltration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975546A (en) * | 2018-09-25 | 2018-12-11 | 浙江金龙自控设备有限公司 | A kind of high temperature water filling fine filtration device |
-
2017
- 2017-11-29 CN CN201721631327.4U patent/CN207659200U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975546A (en) * | 2018-09-25 | 2018-12-11 | 浙江金龙自控设备有限公司 | A kind of high temperature water filling fine filtration device |
| CN108975546B (en) * | 2018-09-25 | 2024-05-28 | 浙江金龙自控设备有限公司 | Fine filtering device for high-temperature water injection |
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