CN107879513A - A kind of device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity - Google Patents
A kind of device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity Download PDFInfo
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- CN107879513A CN107879513A CN201711235677.3A CN201711235677A CN107879513A CN 107879513 A CN107879513 A CN 107879513A CN 201711235677 A CN201711235677 A CN 201711235677A CN 107879513 A CN107879513 A CN 107879513A
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- reverse osmosis
- unit
- softening
- water
- high rigidity
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
Abstract
The present invention relates to a kind of full-automatic soft device of the reverse osmosis concentrated water process of high rigidity, belong to field of waste water treatment.The inventive system comprises first end reverse osmosis units, static mixer, softening reaction member, tube settler unit, dosing unit, clear water box unit and ultra filtration unit.Wherein, just the delivery port of end reverse osmosis units is connected by pipeline with the static mixer water inlet, the liquid outlet of dosing unit is connected also by pipeline with the static mixer water inlet, the delivery port of static mixer is connected to the water inlet of the softening reaction member, the delivery port of the softening reaction member is connected by pipeline with the water inlet of the tube settler unit, the water inlet that the delivery port of tube settler unit is led to clear water box unit by pipeline is connected, and the delivery port of filtered water tank is connected with the water inlet of the ultra filtration unit.Intelligent automation degree of the present invention is high, operation is convenient, hardness removal effect is good, has good application prospect in water treatment field.
Description
Technical field
The present invention relates to field of waste water treatment, in particular to the full-automatic softening of the reverse osmosis concentrated water process of high rigidity
Device.
Background technology
The water resource that China can develop largely has developed, and it is not that development difficulty is big to increase water source newly, is exactly opened
It is high to send out cost, water scarcity situation is increasingly severe.And the discharge of annual a large amount of industrial wastewaters and sanitary sewage, not only pollute
Environment, wastes valuable water resource.Therefore the cyclic utilization rate of water must be improved on the whole, reduced to gross amount of water resources
Demand, realize waste water reclaiming, improve membrane separation technique remanufacture, the tribute of recycling and industrial chain ecology extension etc.
Degree of offering.
Using bi-membrane method processing reclaimed water make up to reuse standard under existing situation it is more and more important, and in order to further
Economize on resources, many technological designs, which require, at present improves Treated sewage reusing rate, and this must just use multi-stage reverse osmosis.Water
Hardness has a very big impact to the operation stability of counter-infiltration, and the reverse osmosis concentrated draining of high rigidity is that reclaimed water is concentrated by reverse osmosis membrane
Afterwards rich in organic matter, the gray- water of inorganic matter.The mechanism of reverse osmosis membrane failure is that film fouling causes dirt stifled, and film fouling point
For organic fouling and inorganic salts fouling.Organic fouling can solve by modes such as adding of germicide.Inorganic salts fouling is main
It is due to difficulty soluble salt such as CaCO3, CaSO4, Mg (OH)2Deng inorganic miscellaneous in water removal caused by the deposition of film surface, is only gone
Matter, the risk of reverse osmosis membrane fouling can just substantially reduce.
Antisludging agent need to be often added between multistage reverse osmosis unit or softening process is set, to ensure that follow-up reverse osmosis membrane is normal
Operation.Add that antisludging agent is only effective when coming that the water hardness is not higher, and exist without the hardness of fundamentally reduction water, reverse osmosis membrane
Water is carried out after repeatedly concentrating, hardness is also corresponding to be doubled and redoubled, and can only now use softening process, can just prevent counter-infiltration
Film fouling.The most frequently used softening process is ion exchange, coagulating sedimentation etc. in bi-membrane method water process.But ion exchange is present
It is rapidly saturated, it is necessary to frequent regeneration, and caused waste water forms secondary pollution, very uneconomical environmental protection in ion regenerative process；
Coagulating sedimentation trivial operations, automaticity is low, it is necessary to labor intensive material resources, and the unstable difficulty of effluent quality reaches reverse osmosis membrane
Inflow requirement.
The content of the invention
The purpose of the present invention is on the basis of existing technology, there is provided a kind of reverse osmosis concentrated water process of high rigidity it is complete from
The device of dynamic softening, the end reverse osmosis membrane in multistage counter-infiltration can be prevented because water inlet excessive high hardness easily forms inorganic scale dirt
Dye, cause the compact conjunction of whole workshop section using the softening of lime soda ash, tube settling, full-automatic PLC interlockings and Ultra filtration membrane technology
Reason, excellent effect, the high management easy to operation of automaticity, and water outlet reaches reverse osmosis membrane inflow requirement.
Technical scheme is as follows：
A kind of device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity, it includes just end reverse osmosis units, static mixing
Unit, dosing unit, softening reaction member, tube settler unit, clear water box unit and ultra filtration unit, the just end counter-infiltration list
The delivery port of member is connected by pipeline with the static mixer water inlet, and the liquid outlet of the dosing unit is also by pipe
Road is connected with the static mixer water inlet, and the delivery port of the static mixer is connected to the softening reaction list
The water inlet of member, the delivery port of the softening reaction member are connected by pipeline with the water inlet of the tube settler unit, institute
The delivery port for stating tube settler unit is led to the water inlet connection of clear water box unit, the delivery port of the filtered water tank and institute by pipeline
State the water inlet connection of ultra filtration unit.
The present apparatus also includes end reverse osmosis units, and the delivery port of the ultra filtration unit passes through pipeline and end counter-infiltration list
The water inlet connection of member.
The present apparatus also includes slag disposal system, and the slag notch of the tube settler unit passes through deslagging conduit and Slag treatment system
System enters cinder notch connection.
First end reverse osmosis units in the present apparatus contain a PLC system.
Ultra filtration unit in the present apparatus also contains another PLC system.
Dosing unit in the present apparatus is used for stirring subtracting for medicament including the grug feeding jar for powder charge agent, in grug feeding jar
The measuring pump of fast mixer and control pharmaceutical quantities.Grug feeding jar can be alkali lye medicinal cupping.
Softening reaction member in the present apparatus includes softening retort, liquid level alarm, the second deceleration mixer and lifting
Pump.
Liquid level alarm is arranged in the middle part of the tank body of softening retort, the liquid level alarm and the just section reverse osmosis units
PLC system be connected by wire.
Second deceleration mixer is arranged on dense draining and the medicament for being used for stirring high rigidity in softening retort.Elevator pump is pacified
By pipeline conveying dense draining and medicament in softening retort.
Tube settler unit in the present apparatus includes tube settler pond, the funnel type collection mud installed in tube settler bottom
Groove and the spoil disposal conduit installed in tube settler bottom.
Tube settler pond is steel or Reinforced Concrete Structure, and inclined tube section is regular hexagon, 60 ° of inclined tube angle of inclination, incline direction
It should not be restricted by current to fling, flow velocity is 1 ~ 4 mm/s；Clear water zone is highly 1.0 ~ 1.5m at the top of inclined tube, and bottom water distributing area height is not
Less than 1.0m.
Clear water box unit in the present apparatus includes filtered water tank, online pH meter and online transmissometer.
Online pH meter is arranged in filtered water tank, and the online pH meter is connected by wire with the PLC system of the ultra filtration unit
Connect.
Online transmissometer is also mounted in filtered water tank, and the online transmissometer passes through wire and the PLC of the ultra filtration unit
System is connected.
The present apparatus can be included by PLC interlocked controls come timely adjustment dosing and water process situation, the PLC interlocked controls
The following aspects：(1) liquid level alarm softened in reaction member is arranged in the middle part of the tank body of softening retort, the liquid level
Alarm is connected with the PLC system of the just section reverse osmosis units by wire, is then become liquid level signal and is delivered to outside
Control room industrial computer, there is low liquid level warning and pipe, be advantageous to find and handle in time.(2) clear water box unit is online
Transmissometer is also mounted in filtered water tank, and the online transmissometer is connected by wire with the PLC system of the ultra filtration unit, together
When PLC by turbid ity signal become deliver to outside control room industrial computer, strict water production control turbidity ＜ 40NTU.When production water turbidity >=
Alarmed at once during 40NTU, prompt to need spoil disposal.(3) the online pH meter of clear water box unit is arranged in filtered water tank, the online pH
Meter is connected by wire with the PLC system of the ultra filtration unit, while the measuring pump of dosing unit is surpassed by wire with described
The PLC system of filter unit is connected, and the measuring pump of online pH meter and dosing unit is linked together, using produce the online pH of water as
Foundation, dose is precisely added automatically.It is chain by the PLC of each unit so that it is easy while soft to soften whole step operation management
Change effect stability is efficient, and hardness clearance is more than 75%.
First end reverse osmosis units in the present apparatus take cross-flow filtration method, the dense draining of discharge 25% ~ 40%.
Static mixer in the present apparatus can use SK type static mixers, horizontal positioned, allow alkali lye and dense draining
Mixing.
Ultra filtration unit in the present apparatus uses filtering accuracy to remove small suspension and glue for 0.01 ~ 0.1 μm of milipore filter
Body impurity, make water turbidity after ultrafiltration<0.2 NTU.
Inoranic membrane or organic film can be selected in milipore filter, and the membrane component of milipore filter is tubular type, hollow fiber form or board-like membrane element
Part.
Preferably, milipore filter is the external-compression type doughnut organic film that filtering accuracy is 0.03 μm.
The membrane flux of ultra filtration unit in the present apparatus can be 20 ~ 70L/m2H, the time ultra filtration unit cycle of operation be 40 ~
60min。
The cycle of operation of ultra filtration unit in the present apparatus includes：The filtering production water time be 40 ~ 60min, and the gas scouring time is
30 ~ 90s, backwash time are 30~60s, and it is 20 ~ 60s just to wash the time, add hydrochloric acid in backwash pipeline upslide during backwash, adjust backwash
Water pH value is 2 ~ 4.
The present invention can also automatically adjust added amount of chemical to adapt to different water quality.
It is as follows using technical scheme, advantage:
A kind of device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity provided by the invention, can prevent multistage counter-infiltration
In end reverse osmosis membrane easily form inorganic scale pollution because of water inlet excessive high hardness, automaticity is high, it is easy to operate, be easy to pipe
Reason.
The present invention automatically adjusts added amount of chemical to adapt to different water quality, excellent to the removal effect of water hardness, goes out
Water reaches reverse osmosis requirement, does not produce secondary pollution.
The present invention, which focuses on, utilizes lime soda ash tenderizer, tube settling, full automatic PLC interlockings and Ultra filtration membrane technology
So that whole workshop section compact and reasonable, economical convenient.
Brief description of the drawings
Fig. 1 is a kind of device flow chart of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity.
Embodiment
By following examples and with reference to accompanying drawing to a kind of the full-automatic soft of the reverse osmosis concentrated water process of high rigidity of the invention
The device of change is further described, but these embodiments do not form any restrictions to the present invention.
As shown in figure 1, a kind of device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity of the present invention, it is included just
Hold reverse osmosis units, static mixer, dosing unit, softening reaction member, tube settler unit, clear water box unit and ultrafiltration
Unit.
Wherein, just the delivery port of end reverse osmosis units is connected by pipeline with the static mixer water inlet, is added
The liquid outlet of prescription member is connected also by pipeline with the static mixer water inlet, and the delivery port of static mixer connects
The water inlet of the softening reaction member is connected to, the delivery port of the softening reaction member passes through pipeline and the tube settler list
The water inlet connection of member, the delivery port of tube settler unit are led to the water inlet connection of clear water box unit by pipeline, filtered water tank
Delivery port is connected with the water inlet of the ultra filtration unit.
The present apparatus also includes end reverse osmosis units, and the delivery port of ultra filtration unit passes through pipeline and end reverse osmosis units
Water inlet connects.
The present apparatus also includes slag disposal system, and the slag notch of the tube settler unit passes through deslagging conduit and Slag treatment system
System enters cinder notch connection.
Just end reverse osmosis units take cross-flow filtration method, the dense draining of discharge 25% ~ 40%.Just end reverse osmosis units contain
One PLC system.
Static mixer in the present apparatus can use SK type static mixers, horizontal positioned, allow medicament and dense draining
Mixing.
Dosing unit include for powder charge agent grug feeding jar, in grug feeding jar be used for stir medicament deceleration mixer and
Control the measuring pump of pharmaceutical quantities.The grug feeding jar can be alkali lye medicinal cupping.
Softening reaction member includes softening retort, liquid level alarm, the second deceleration mixer and elevator pump.Liquid level warning
Device is arranged in the middle part of the tank body of softening retort, the liquid level alarm with it is described at the beginning of section reverse osmosis units PLC system by leading
Line is connected.Second deceleration mixer is arranged on dense draining and the medicament for being used for stirring high rigidity in softening retort.Elevator pump
By pipeline conveying dense draining and medicament in softening retort.
Tube settler unit in the present apparatus includes tube settler pond, the funnel type collection mud installed in tube settler bottom
Groove and the spoil disposal conduit installed in tube settler bottom.Tube settler pond is steel or Reinforced Concrete Structure, and inclined tube section is positive six side
Shape, 60 ° of inclined tube angle of inclination, incline direction should not be restricted by current and fling, and flow velocity is 1 ~ 4 mm/s；Clear water zone height at the top of inclined tube
For 1.0 ~ 1.5m, bottom water distributing area is highly not less than 1.0m.
Clear water box unit in the present apparatus includes filtered water tank, online pH meter and online transmissometer.Online pH meter is arranged on clear
In water tank, the online pH meter is connected by wire with the PLC system of the ultra filtration unit.Online transmissometer is also mounted at clear water
In case, the online transmissometer is connected by wire with the PLC system of the ultra filtration unit.
The present apparatus can be included by PLC interlocked controls come timely adjustment dosing and water process situation, the PLC interlocked controls
The following aspects：(1) liquid level alarm softened in reaction member is arranged in the middle part of the tank body of softening retort, the liquid level
Alarm is connected with the PLC system of the just section reverse osmosis units by wire, is then become liquid level signal and is delivered to outside
Control room industrial computer, there is low liquid level warning and pipe, be advantageous to find and handle in time.(2) clear water box unit is online
Transmissometer is also mounted in filtered water tank, and the online transmissometer is connected by wire with the PLC system of the ultra filtration unit, together
When PLC by turbid ity signal become deliver to outside control room industrial computer, strict water production control turbidity ＜ 40NTU.When production water turbidity >=
Alarmed at once during 40NTU, prompt to need spoil disposal.(3) the online pH meter of clear water box unit is arranged in filtered water tank, the online pH
Meter is connected by wire with the PLC system of the ultra filtration unit, while the measuring pump of dosing unit is surpassed by wire with described
The PLC system of filter unit is connected, and the measuring pump of online pH meter and dosing unit is linked together, using produce the online pH of water as
Foundation, dose is precisely added automatically.It is chain by the PLC of each unit so that it is easy while soft to soften whole step operation management
Change effect stability is efficient, and hardness clearance is more than 75%.
First end reverse osmosis units in the present apparatus take cross-flow filtration method, the dense draining of discharge 25% ~ 40%.
Ultra filtration unit in the present apparatus uses filtering accuracy as 0.01~0.1 μm of milipore filter, remove small suspension and
Colloidal impurity, make water turbidity after ultrafiltration<0.2 NTU.Inoranic membrane or organic film, the membrane component of milipore filter can be selected in the milipore filter
For tubular type, hollow fiber form or board-like membrane component.
Preferably, the milipore filter is the external-compression type doughnut organic film that filtering accuracy is 0.03 μm.
The membrane flux of ultra filtration unit in the present apparatus can be 20 ~ 70 L/m2H, the time ultra filtration unit cycle of operation be 40 ~
60 min。
The cycle of operation of ultra filtration unit in the present apparatus includes：The filtering production water time be 40~60min, and the gas scouring time is
30 ~ 90s, backwash time are 30 ~ 60s, and it is 20 ~ 60s just to wash the time, add hydrochloric acid in backwash pipeline upslide during backwash, adjust backwash
Water pH value is 2 ~ 4.
The present invention can also automatically adjust added amount of chemical to adapt to different water quality.
The running of the present apparatus is as follows：Raw water enters just end reverse osmosis units by pipeline and carries out reverse-osmosis treated, from
Just the delivery port of end reverse osmosis units enters static mixer, and the medicament of dosing unit enters also by the liquid outlet of dosing unit
Enter static mixer, enter softening reaction member after static mixer mixes with raw water.Raw water and pharmaceutical mixture are again
Enter tube settler unit from the delivery port of softening reaction member, after being settled in the tube settler pond of tube settler unit, sink
The salt slurry in drop bottom of pond portion enters slag disposal system, dense draining the going out from tube settler unit on settling tank top by spoil disposal conduit
The mouth of a river enters clear water box unit, and the delivery port through clear water box unit enters ultra filtration unit and carries out hyperfiltration treatment, finally by soft
End reverse osmosis units are entered by pipeline with the production water of low turbidity and carry out reverse-osmosis treated.
Embodiment 1：
The biochemical second pond tail water for starching papermaking integration firm using the large-scale woods in Shandong at present is entered as raw water using membrane separation technique
Row Treated sewage reusing pilot plant test.The characteristics of enterprises in pulp and paper industry waste water, is water is big, content of organics is high, the fiber in waste water hangs
Float is more, hardness is high, and contains divalent sulfur, and has thio-alcohol foul odour.Full-automatic softening process is arranged on one section of counter-infiltration
Between two sections of counter-infiltrations.One section of reverse osmosis concentrated draining hardness is 2000 ~ 2200mg/L, and waste water water is 2m3/h, and pH value is
7.0~7.5.Alkali lye medicament uses lime-soda process, and dense draining and alkaline reaction time are 30min.It is oblique using PLC interlocked controls
Pipe settling tank water outlet pH value is 10.9 ~ 11.2.Milipore filter uses material as external pressure that Kynoar, filtering accuracy are 0.10 μm
Formula doughnut organic film, ultrafiltration membrane flux are set to 50 L/m2H, the filtering production water time be 45min, and the gas scouring time is
60s, backwash time are 50s, and it is 40s just to wash the time.Backwash water pH value is set to 2.5, gas scrub pressure 0.10Mpa, air inflow 9
Nm3/ h/ branch films.Device systems are stable, the NTU of milipore filter delivery turbidity ＜ 0.20, and the clearance to hardness is 78% ~ 80%,
The long-time steady operation of follow-up reverse osmosis membrane is ensure that, reduces reverse osmosis membrane cleaning frequency.Specific water sample detection index is shown in Table
1。
The water sample detection index of table 1
Embodiment 2：
Xuzhou large chemical complex is saving water resource, and embrane method Treated sewage reusing is carried out to biochemical second pond tail water.Technique uses
Two sections of reverse osmosis membrane systems, the counter-infiltration rate of recovery are respectively 75% and 60%.Reverse osmosis concentrated water is just held because hardness is higher, can not be direct
Into end counter-infiltration, enter end counter-infiltration after being handled using medicament tenderizer, avoid counter-infiltration fouling dirty stifled.Just end is anti-
Infiltration high rigidity concentrated water amount is 15m3/h, and COD contents are 200 ~ 300 mg/L, the μ s/cm of conductance 5000 ~ 6000, hardness 1600 ~
1900mg/L, pH are 7.0 ~ 7.6.The alkali lye medicament used in softening is white lime solution and sodium carbonate liquor.Tube settler pond
Online pH meter and online transmissometer are assigned in water production pipeline, is 10.6 ~ 11.2 by PLC chain control settling tank water outlets pH value.
Milipore filter uses Kynoar material external-compression type doughnut organic film, and filtering accuracy is 0.03 μm, and ultrafiltration membrane flux is 30
L/m2H, device systems are stable, the NTU of milipore filter delivery turbidity≤0.10, and the clearance to hardness is more than 75%, is
End feed water by reverse osmosis water quality provides guarantee.Specific water sample detection index is shown in Table 2.
The water sample detection index of table 2
Claims (10)
1. a kind of device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity, it is characterised in that it includes just end counter-infiltration
Unit, static mixer, dosing unit, softening reaction member, tube settler unit, clear water box unit and ultra filtration unit, institute
The delivery port for stating just end reverse osmosis units is connected by pipeline with the static mixer water inlet, the dosing unit
Liquid outlet is connected also by pipeline with the static mixer water inlet, and the delivery port of the static mixer is connected to
The water inlet of the softening reaction member, the delivery port of the softening reaction member pass through pipeline and the tube settler unit
Water inlet is connected, and the delivery port of the tube settler unit is led to the water inlet connection of clear water box unit, the clear water by pipeline
The delivery port of case is connected with the water inlet of the ultra filtration unit.
2. the device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity according to claim 1, it is characterised in that
It also includes end reverse osmosis units and slag disposal system, and the delivery port of the ultra filtration unit passes through pipeline and the end reverse osmosis
The water inlet connection of saturating unit；The slag notch of the tube settler unit is connected by the cinder notch that enters of deslagging conduit and slag disposal system
Connect.
3. the device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity according to claim 1, it is characterised in that
The just end reverse osmosis units contain a PLC system；The ultra filtration unit also contains another PLC system.
4. the device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity according to claim 1, it is characterised in that
The dosing unit is used for stirring deceleration mixer and the control of medicament including the grug feeding jar for powder charge agent, in grug feeding jar
The measuring pump of pharmaceutical quantities.
5. the device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity according to claim 3, it is characterised in that
The softening reaction member includes softening retort, liquid level alarm, the second deceleration mixer and elevator pump.
6. the device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity according to claim 5, it is characterised in that
The liquid level alarm is arranged in the middle part of the tank body of softening retort, the liquid level alarm and the just section reverse osmosis units
PLC system is connected by wire；The second deceleration mixer, which is arranged in softening retort, to be used for stirring the dense of high rigidity
Draining and medicament；The elevator pump is arranged in softening retort by pipeline conveying dense draining and medicament.
7. the device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity according to claim 1, it is characterised in that
The tube settler unit includes tube settler pond, the funnel type mud-collecting slot installed in tube settler bottom and installed in inclined tube
The spoil disposal conduit of sedimentation basin bottom；The tube settler pond is steel or Reinforced Concrete Structure, and inclined tube section is regular hexagon, and inclined tube tilts
60 ° of angle.
8. the device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity according to claim 1, it is characterised in that
The clear water box unit includes filtered water tank, online pH meter and online transmissometer；The online pH meter is arranged in filtered water tank, is somebody's turn to do
Line pH meter is connected by wire with the PLC system of the ultra filtration unit；The online transmissometer is arranged in filtered water tank, described
Online transmissometer is connected by wire with the PLC system of the ultra filtration unit.
9. the device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity according to claim 1, it is characterised in that
The ultra filtration unit contains the milipore filter that filtering accuracy is 0.01 ~ 0.1 μm, and the milipore filter is used for removing small suspension and glue
Body impurity, make water turbidity after ultrafiltration<0.2 NTU；The membrane component of the milipore filter is tubular type, hollow fiber form or board-like membrane element
Part；The milipore filter is the external-compression type doughnut organic film that filtering accuracy is 0.03 μm.
10. the device of the full-automatic softening of the reverse osmosis concentrated water process of high rigidity according to claim 1, it is characterised in that
The membrane flux of described ultra filtration unit can be 20 ~ 70 L/m2H, the time ultra filtration unit cycle of operation are 40 ~ 60 min；It is described
The cycle of operation of ultra filtration unit includes：The filtering production water time is 40 ~ 60min, and the gas scouring time is 30 ~ 90s, and the backwash time is 30
~ 60s, it is 20 ~ 60s just to wash the time, adds hydrochloric acid in backwash pipeline upslide during backwash, regulation backwash water pH value is 2 ~ 4.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607830A (en) * | 2018-12-28 | 2019-04-12 | 新疆环境工程技术有限责任公司 | A kind of high rigidity waste water chemistry-film coupling softening method |
| CN112645498A (en) * | 2020-12-31 | 2021-04-13 | 维尔利环保科技集团股份有限公司 | Treatment method of reverse osmosis concentrated solution of high-magnesium landfill leachate |
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