CN204911249U - A submergence formula ultrafiltration system for preparing normal water - Google Patents

A submergence formula ultrafiltration system for preparing normal water Download PDF

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Publication number
CN204911249U
CN204911249U CN201520347423.0U CN201520347423U CN204911249U CN 204911249 U CN204911249 U CN 204911249U CN 201520347423 U CN201520347423 U CN 201520347423U CN 204911249 U CN204911249 U CN 204911249U
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China
Prior art keywords
membrane cisterna
ultrafiltration system
automatic valve
purging
membrane
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CN201520347423.0U
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Chinese (zh)
Inventor
李星文
刘滢
张佥
许真瑞
常江曼
姜莹
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ZIGUANG ENVIRONMENTAL PROTECTION CO Ltd
Thunip Holdings Co Ltd
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ZIGUANG ENVIRONMENTAL PROTECTION CO Ltd
Thunip Holdings Co Ltd
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Abstract

The utility model relates to a submergence formula ultrafiltration system for preparing normal water, include: filter unit, back flush unit and sweep the unit, wherein, filter unit includes consecutive membrane cisterna, suction pump and tank, be equipped with the milipore filter subassembly in the membrane cisterna, the back flush unit includes the back flush pump, the one end of back flush pump with the tank is connected, the other end connect in the membrane cisterna with pipeline between the suction pump, sweep the unit including connect in the bottom of membrane cisterna sweep the fan. The ultrafiltration system, the energy consumption is low, easily wash, be the ultrafiltration system that the practicality is strong, be suitable for and use widely on a large scale.

Description

A kind of immersion ultrafiltration system for the preparation of middle water
Technical field
The utility model belongs to sewage treatment area, is specifically related to a kind of ultrafiltration system for the preparation of middle water.
Background technology
Treated sewage reusing refers to useless for life (dirt) water, industrial wastewater etc. to focus on, and after reaching the discharge standard of national regulation, then carries out advanced treating, reaches certain standard Reuse on Environment, industrial production etc., thus reach water-saving object.
Membrane filtration technique is the water technology be widely used at present in Treated sewage reusing advanced treatment process, and what usually adopt in the processing stage of the concentration of Treated sewage reusing is hyperfiltration technique.Ultrafiltration take pressure as one of the membrane separation technique of motive force.Ultrafiltration micropore is less than 0.1 micron, and the harmful substance such as bacterium, iron rust, colloid in the thorough filtering water of energy, retains original trace element and mineral matter in water.In ultra-filtration process, the aqueous solution, under pressure promotes, flows through film surface, be less than solvent (water) and the Small molecular solute water permeable membrane of fenestra, become scavenging solution (cleaner liquid), the solute larger than fenestra and solute group are trapped, discharge with current, become concentrate.Ultra-filtration process is dynamic filtration, and separation completes under flow regime.Solute is at film surface deposition, and membrane filtration pressure progressively rises, and can be recovered when reaching capacity by cleaning.
Now widely used is pressure type hyperfiltration technique, and pressure type ultrafiltration delivers in hyperfiltration membrane assembly with intake pump by former water, and pressure needs at more than 25kP, and therefore energy consumption is higher.Because water resource of reclaimed water water quality often there will be fluctuation, the water quality fashion time difference, when suspension of intaking is more than 20mg/L, easily pollute the film formula that impacts, cause operating pressure to raise, cleaning is frequent.Because pressure type milipore filter film silk is all filled in putamina, not easily pollutant is thoroughly removed during cleaning.Therefore pressure type ultrafiltration also exists the shortcomings such as cleaning is frequent, operation energy consumption is high, operational effect is unstable.
Utility model content
(1) technical problem that will solve
In the process of middle water, there is the defects such as cleaning is frequent, operation energy consumption is high, effect is unstable for existing pressure type hyperfiltration technique, the utility model provides a kind of immersion ultrafiltration system.
(2) technical scheme
Immersion ultrafiltration system described in the utility model, comprising: filter element, backwash unit and purging unit;
Wherein, described filter element comprises membrane cisterna connected successively, suction pump and tank, is provided with hyperfiltration membrane assembly in described membrane cisterna;
Described backwash unit comprises backwashing pump, and one end of described backwashing pump is connected with described tank, and the other end is connected to the pipeline between described membrane cisterna and described suction pump;
Described purging unit comprises the purging motor of the bottom being connected to described membrane cisterna.
Preferably, described filter element comprises one end and is connected with described membrane cisterna, and the other end connects the water inlet automatic valve of intake pump; Described filter element also comprises interconnective pressure transmitter and produces water automatic valve, and described pressure transmitter is connected with described membrane cisterna, and described product water automatic valve is connected with described suction pump.
Preferably, described backwash unit also comprises one end and is connected with described recoil pump, and the other end is connected to the backwash automatic valve between described pressure transmitter and described product water automatic valve.
Preferably, described purging unit also comprises the purging automatic valve be connected between described purging motor and described membrane cisterna.
Preferably, the bottom of described membrane cisterna is provided with exhaust-valve.
Preferably, described transfilter assembly is ZeeWeed500D, membrane module be specifically combined as each film case 64 films, every sheet membrane area is 34.4m 2.
Preferably, also chemical cleaning system is connected with between described water inlet automatic valve and membrane cisterna.When backwash can not make membrane flux return to normal condition time, need to use chemical cleaning system to clean film.Chemical cleaning adopts the liquor natrii hypochloritis of 500mg/L to clean the Organic Pollution on film silk surface, adopts the inorganic pollution on the citric acid solution cleaning film silk surface of 2000mg/L.
In ultrafiltration system preparation described in the utility model, the method for water, comprises the steps:
Former water is promoted by described intake pump, enters described membrane cisterna through described water inlet automatic valve; Described former water, under the swabbing action of described suction pump, filters through described hyperfiltration membrane assembly, and the clean water after filtration enters described tank through described product water from valve.In filter process, produce water pressure in-20 ~-35Kpa scope, initial operating stage suction is lower, about-20Kpa, and along with the accumulation of fouling membrane, suction raises gradually.
In the process of process, the pressure of pressure transmitter is generally-20 ~-35Kpa, when pressure exceedes-35KPa, shows that the pollution of milipore filter has run up to a certain degree, need carry out backwash to it.Comprise the steps:
Close described water inlet automatic valve and described product water automatic valve, open described backwashing pump and described backwash automatic valve, make the clean water of described tank from entering described membrane cisterna in the other direction, open described purging motor and described purging automatic valve, run after 20 ~ 40 seconds, close described backwashing system and described purging system, open described exhaust-valve, by emptying for described membrane cisterna.
In the utility model, when backwash can not make membrane flux return to normal condition time, need to carry out Chemical cleaning, comprise the steps: to open described intake pump and water inlet automatic valve, open described chemical cleaning system simultaneously, make liquid pass into described membrane cisterna with in described former water, medication immersion blister film combination, after 20 ~ 40 minutes, open described exhaust-valve, emptying membrane cisterna.
(3) beneficial effect
Ultrafiltration membrane system described in the utility model, has following beneficial effect:
(1) ultrafiltration system described in the utility model, all membrane modules are all immersed in membrane cisterna, by suction pump, clean water is extracted out in film silk, in this process, its pressure general control is at-25 ~-35KPa, compares with pressure type ultrafiltration, and its energy consumption is lower, sewage has the stop of certain hour in membrane cisterna, can play mixed uniformly effect, water quality is more stable, less to the percussion of film.The film of ZeeWeed500D is a kind of reinforced hollow fiber ultrafiltration membrane, has stronger water treatment capacity.
(2) ultrafiltration system film described in the utility model is not filled in putamina, therefore its flushing is more easily carried out, the flushing of impurity is more thorough, on the other hand, membrane filtration system of the present utility model further provided with special rinse-system and purging system, rinse-system is from the removal in the other direction film being carried out to impurity, and purging system purges the impurity adhering to film surface, the cleaning can facilitate, realized film ideally.
Accompanying drawing explanation
Fig. 1 is the ultrafiltration system for the preparation of middle water described in the utility model
1, intake pump; 2, water inlet automatic valve; 3, hyperfiltration membrane assembly; 4, pressure transmitter; 5, water automatic valve is produced; 6, suction pump; 7, tank; 8, backwashing pump; 9, backwash automatic valve; 10, membrane cisterna; 11, chemical cleaning system; 12, automatic valve is purged; 13, purging motor; 14, exhaust-valve.
Detailed description of the invention
Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
Embodiment 1
The present embodiment provides a kind of immersion ultrafiltration system preparing middle water, as shown in Figure 1, comprises unit for treating water, backwash unit and purges unit;
Wherein, described filter element comprises membrane cisterna 10 connected successively, suction pump 6 and tank 7, is provided with hyperfiltration membrane assembly 3 in described membrane cisterna;
Described backwash unit comprises the tank 7, backwashing pump 8, the described backwashing pump that are connected successively and is connected to pipeline between described membrane cisterna 10 and described suction pump 6;
Described purging unit comprises purging motor 13, and described purging motor 13 is connected to the bottom of described membrane cisterna 10 by pipeline.
Embodiment 2
The present embodiment provides a kind of immersion ultrafiltration system preparing middle water, compares with embodiment 1, and its difference is
Described filter element also comprises the intake pump 1 that connects successively and water inlet automatic valve 2 and the pressure transmitter 4 be connected successively and product water automatic valve 5, described water inlet automatic valve 2 is connected with described membrane cisterna 10, described pressure transmitter 4 is connected with described membrane cisterna 10, and described product water automatic valve 6 is connected with described suction pump 5.
Described backwash unit also comprises the backwash automatic valve 9 be connected with described recoil pump 8, and the other end of described flushing automatic valve 9 is connected between described pressure transmitter 4 and described product water automatic valve 5.
Described purging unit also comprises the purging automatic valve 12 be connected with described purging motor 13, and the other end of described purging automatic valve 12 is connected to the bottom of described membrane cisterna 10.
The bottom of the preferred described membrane cisterna of the ultrafiltration system described in this enforcement is provided with exhaust-valve 14.
In the present embodiment, described hyperfiltration membrane assembly is preferably ZeeWeed500D, membrane module be specifically combined as each film case 64 films, every sheet film 34.4m 2.
In the present embodiment, between described water inlet automatic valve and described membrane cisterna, be preferably connected with chemical cleaning system 11.
Although above done detailed description to the utility model with a general description of the specific embodiments, on the utility model basis, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements on the basis of not departing from the utility model spirit, all belong to the scope that the utility model is claimed.

Claims (8)

1. for the preparation of an immersion ultrafiltration system for middle water, it is characterized in that, comprising: filter element, backwash unit and purging unit;
Wherein, described filter element comprises membrane cisterna connected successively, suction pump and tank, is provided with hyperfiltration membrane assembly in described membrane cisterna;
Described backwash unit comprises backwashing pump, and one end of described backwashing pump is connected with described tank, and the other end is connected to the pipeline between described membrane cisterna and described suction pump;
Described purging unit comprises the purging motor of the bottom being connected to described membrane cisterna.
2. ultrafiltration system according to claim 1, is characterized in that, described filter element comprises one end and is connected with described membrane cisterna, and the other end connects the water inlet automatic valve of intake pump; Described filter element also comprises interconnective pressure transmitter and produces water automatic valve, and described pressure transmitter is connected with described membrane cisterna, and described product water automatic valve is connected with described suction pump.
3. ultrafiltration system according to claim 2, is characterized in that, described backwash unit also comprises one end and is connected with described recoil pump, and the other end is connected to the backwash automatic valve between described pressure transmitter and described product water automatic valve.
4. ultrafiltration system according to claim 1, is characterized in that, described purging unit also comprises the purging automatic valve be connected between described purging motor and described membrane cisterna.
5. ultrafiltration system according to claim 3, is characterized in that, described purging unit also comprises the purging automatic valve be connected between described purging motor and described membrane cisterna.
6. ultrafiltration system according to claim 1, is characterized in that, the bottom of described membrane cisterna is provided with exhaust-valve.
7. ultrafiltration system according to claim 1 or 5, it is characterized in that, described hyperfiltration membrane assembly is ZeeWeed500D, membrane module be specifically combined as each film case 64 films.
8. ultrafiltration system according to claim 2, is characterized in that, is connected with chemical cleaning system between described water inlet automatic valve and described membrane cisterna.
CN201520347423.0U 2015-05-26 2015-05-26 A submergence formula ultrafiltration system for preparing normal water Active CN204911249U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104959036A (en) * 2015-05-26 2015-10-07 浦华环保有限公司 Immersion ultrafiltration system for preparing reclaimed water, and application thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104959036A (en) * 2015-05-26 2015-10-07 浦华环保有限公司 Immersion ultrafiltration system for preparing reclaimed water, and application thereof

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