CN201424407Y - Reverse osmosis and nanofiltration system used in treating high-density organic wastewater - Google Patents
Reverse osmosis and nanofiltration system used in treating high-density organic wastewater Download PDFInfo
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- CN201424407Y CN201424407Y CN2009201075688U CN200920107568U CN201424407Y CN 201424407 Y CN201424407 Y CN 201424407Y CN 2009201075688 U CN2009201075688 U CN 2009201075688U CN 200920107568 U CN200920107568 U CN 200920107568U CN 201424407 Y CN201424407 Y CN 201424407Y
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Abstract
The utility model provides a reverse osmosis and nanofiltration system used in the treatment of high-density organic wastewater, which comprises a security filter, a high pressure pump, a first-segment reverse osmosis/nanofiltration unit, a booster pump, a second-segment reverse osmosis/nanofiltration unit, a circulating pump, a third-segment reverse osmosis/nanofiltration unit and a pipeline, wherein, the security filter is communicated with the first-segment reverse osmosis/nanofiltration unit through the pipeline and the high pressure pump, the first-segment reverse osmosis/nanofiltration unit is connected in sequence with the second-segment reverse osmosis/nanofiltration unit and the third-segment reverse osmosis/nanofiltration unit through the pipeline to form a tri-segment type reverse osmosis/nanofiltration processing unit, the booster pump is arranged between the first-segment reverse osmosis/nanofiltration unit and the second-segment reverse osmosis/nanofiltration unit, the circulating pump is arranged between the second-segment reverse osmosis/nanofiltration unit and the third-segment reverse osmosis/nanofiltration unit, the concentrated solution outlet of the third-segment reverse osmosis/nanofiltration unit is taken as a concentrated solution discharge outlet, and the water yield outlets of the three reverse osmosis/nanofiltration units are communicated with each other for serving as a recycle water outlet. The system is simple in structure, and can dispose high-density organic wastewater.
Description
Technical field
The utility model relates to sewage treatment area, relates in particular to a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater.
Background technology
Two sections reverse osmosis/nanofiltration system of standard one-level of the prior art are mainly used in fields such as boiler feedwater desalination, ultrapure water preparation, industrial water supply, sea water desaltination, reusing sewage.When water quality was used in the field preferably, reverse osmosis/nanofiltration membrane was polluted and gentlier or is not substantially had pollution, but in recent years because country is more and more higher to the requirement of energy-saving and emission-reduction, reusing sewage has become important applied field of reverse osmosis/nanofiltration.And at present in the reusing sewage field, even two sections reverse osmosiss of standard one-level/nanofiltration system adopts anti-pollution reverse-osmosis/nanofiltration membrane still to have the problem of film heavy contamination, have a strong impact on the steady running of equipment, also restricted the range of application of reverse osmosis/nanofiltration in the reusing sewage field.Particularly reach 100mg/L when above at COD, two sections reverse osmosis/nanofiltration system of standard one-level can't be moved substantially, and therefore present reverse osmosis/nanofiltration is difficult in the high Organic pollutants waste water and is applied.
Summary of the invention
Based on above-mentioned existing in prior technology problem, the utility model embodiment provides a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater, when high concentrated organic wastewater is handled, can alleviate film greatly and pollute, equipment steady running can be made, and the rate of recovery of system can be improved.
The utility model embodiment is achieved through the following technical solutions:
The utility model embodiment provides a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater, comprising:
Security personnel strainer, high-pressure pump, one section reverse osmosis/nano-filtration unit, topping-up pump, two sections reverse osmosis/nano-filtration unit, recycle pump, three sections reverse osmosis/nano-filtration unit and pipeline;
Described security personnel's strainer by the road, high-pressure pump is communicated with one section reverse osmosis/nano-filtration unit, described one section reverse osmosis/nano-filtration unit is cascaded into syllogic reverse osmosis/nanofiltration processing unit with two sections reverse osmosis/nano-filtration unit, three sections reverse osmosis/nano-filtration unit by the road successively, wherein, on the pipeline that is connected between described one section reverse osmosis/nano-filtration unit and the two sections reverse osmosis/nano-filtration unit topping-up pump is set, on the pipeline that is connected between described two sections reverse osmosis/nano-filtration unit and the three sections reverse osmosis/nano-filtration unit recycle pump is set; The concentrated solution outlet of described three sections reverse osmosis/nano-filtration unit is as the concentrated solution discharge outlet, and the product water out of described three reverse osmosis/nano-filtration unit is communicated with the back mutually and exports as reuse water.
The technical scheme that is provided by the invention described above embodiment as can be seen, syllogic reverse osmosis/nanofiltration membrane treatment equipment that security strainer, high-pressure pump and three sections reverse osmosiss/nano-filtration unit cascade forms in the embodiment of the present invention cooperates formation one-level syllogic reverse osmosis/nanofiltration membrane treatment equipment, and on the pipeline that between one section reverse osmosis/nano-filtration unit and two sections reverse osmosis/nano-filtration unit, is connected topping-up pump is set, on the pipeline that between two sections reverse osmosis/nano-filtration unit and three sections reverse osmosis/nano-filtration unit, is connected recycle pump is set.The terminal concentrated stream amount of the putamina of every reverse osmosis/nano-filtration unit reaches certain set(ting)value in making every section, can improve every film surface velocity, reduced the membrane flux of single hop reverse osmosis/nano-filtration unit, thereby the film that can alleviate each section reverse osmosis/nano-filtration unit greatly pollutes, equipment steady running can be made, and the rate of recovery of system can be improved.This system architecture is simple, can handle the reverse osmosis/nanofiltration of carrying out of high concentrated organic wastewater, expand the range of application of reverse osmosis and nanofiltration system greatly, even can be applied in the percolate processing of COD up to 1000mg/L, it is effective to have treat effluent, and film pollutes little advantage.
Description of drawings
The reverse osmosis that Fig. 1 provides for prior art and the structural representation of nanofiltration system;
The reverse osmosis that Fig. 2 provides for the utility model embodiment and the structural representation of nanofiltration system;
Each label is among the figure: 1, security personnel's strainer; 2, high-pressure pump; 3, one section reverse osmosis/nanofiltration; 4, topping-up pump; 5, two sections reverse osmosis/nanofiltrations; 6, recycle pump; 7, three sections reverse osmosis/nanofiltrations; 8, one section reverse osmosis/nanofiltration water producing pipe road; 9, two sections reverse osmosis/nanofiltration water producing pipe roads; 10, three sections reverse osmosis/nanofiltration water producing pipe roads; 11, three sections reverse osmosis/nanofiltration concentrated solution return lines; 12, one section reverse osmosis/nanofiltration concentrated solution pipeline; 13, two sections reverse osmosis/nanofiltration concentrated solution pipelines; 14, concentrated solution discharge pipe; A, high concentrated organic wastewater; B, reuse water; C: discharging concentrated solution.
Embodiment
For ease of the understanding to embodiment of the present invention, the invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment
Present embodiment provides a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater, and as shown in Figure 2, this system comprises:
Security personnel strainer, high-pressure pump, one section reverse osmosis/nano-filtration unit, topping-up pump, two sections reverse osmosis/nano-filtration unit, recycle pump, three sections reverse osmosis/nano-filtration unit and pipeline;
Wherein, described security personnel's strainer by the road, high-pressure pump is communicated with one section reverse osmosis/nano-filtration unit, described one section reverse osmosis/nano-filtration unit is cascaded into syllogic reverse osmosis/nanofiltration processing unit with two sections reverse osmosis/nano-filtration unit, three sections reverse osmosis/nano-filtration unit by the road successively, wherein, on the pipeline that is connected between described one section reverse osmosis/nano-filtration unit and the two sections reverse osmosis/nano-filtration unit topping-up pump is set, on the pipeline that is connected between described two sections reverse osmosis/nano-filtration unit and the three sections reverse osmosis/nano-filtration unit recycle pump is set; The concentrated solution outlet of described three sections reverse osmosis/nano-filtration unit is as the concentrated solution discharge outlet, and the product water out of described three reverse osmosis/nano-filtration unit is communicated with the back mutually and exports as reuse water.In the reality, the concentrated solution outlet of three sections reverse osmosis/nano-filtration unit of this system can also be returned the inlet that is connected to recycle pump by the road, so that the concentrated solution outlet partial reflux of three sections reverse osmosis/nano-filtration unit discharges is to carrying out circular treatment, to improve the rate of recovery of the organic waste water of being handled to three sections reverse osmosis/nano-filtration unit.
In the said system, it specifically is that the concentrated solution outlet of one section reverse osmosis/nano-filtration unit is communicated with the organic waste water water-in of two sections reverse osmosis/nano-filtration unit by the road that described one section reverse osmosis/nano-filtration unit is cascaded into syllogic reverse osmosis/nanofiltration membrane treatment equipment with two sections reverse osmosis/nano-filtration unit, three sections reverse osmosis/nano-filtration unit by the road successively, makes the concentrated solution outlet of two sections reverse osmosis/nano-filtration unit be communicated with the syllogic reverse osmosis/nanofiltration processing unit that forms cascade with the organic waste water water-in of three sections reverse osmosis/nano-filtration unit by pipeline.
In the said system, topping-up pump is set specifically on the pipeline that is connected between described one section reverse osmosis/nano-filtration unit and the two sections reverse osmosis/nano-filtration unit: on the pipeline that is connected between the organic waste water water-in of the concentrated solution outlet of described one section reverse osmosis/nano-filtration unit and two sections reverse osmosis/nano-filtration unit, topping-up pump is set.Described topping-up pump supercharging scope is 2~5bar, and the mould that is used to compensate one section reverse osmosis/nano-filtration unit is fallen.
In the said system, recycle pump is set on the pipeline that is connected between described two sections reverse osmosis/nano-filtration unit and the three sections reverse osmosis/nano-filtration unit specifically is on the pipeline that is connected between the organic waste water water-in of the concentrated solution outlet of described two sections reverse osmosis/nano-filtration unit and three sections reverse osmosis/nano-filtration unit recycle pump is set.The mould that described recycle pump is used to compensate two sections reverse osmosis/nano-filtration unit is fallen and is carried out supercharging for the circulation concentrated solution, the supercharging scope of this recycle pump is 2~5bar, and flow range is the concentrated solution discharge of two sections reverse osmosis/nano-filtration unit and the circulating fluid flow rate sum of three sections reverse osmosis/nano-filtration unit.
In the said system, one section reverse osmosis/nano-filtration unit is used for coming water to handle, and is 22~18LMH according to its average film flux of the difference of coming water water quality, and the rate of recovery is about 30%~50%;
Two sections reverse osmosis/nano-filtration unit are used for the concentrated solution that one section reverse osmosis/nano-filtration unit is discharged is handled again, are 21~17LMH according to its average film flux of the difference of coming water water quality, and its rate of recovery is about 30%~50%;
Three sections reverse osmosis/nano-filtration unit are used for concentrated solution and backflow concentrated solution that two sections reverse osmosiss/nano-filtration unit is discharged are handled again, are 20~16LMH according to its average film flux of the difference of coming water water quality, and its rate of recovery is about 20%~40%.
The reverse osmosis of the utility model embodiment and nanofiltration system, compare with existing standard reverse osmosis/nanofiltration system, adopt to reduce the single hop membrane flux, increase and handle hop count and promptly change three sections of one-levels into and set up intersegmental topping-up pump and three sections modes of setting up recycle pump at two sections, make the terminal concentrated stream amount of every putamina in reverse osmosis/nano-filtration unit of every section reach certain set(ting)value, improve every film surface velocity, equipment steady running can be made, and the rate of recovery of system can be improved.
The flow process that this reverse osmosis and nanofiltration system are handled high concentrated organic wastewater is: come water its water outlet after security personnel's strainer filters to enter high-pressure pump, after the high-pressure pump pressurization, enter one section reverse osmosis/nano-filtration unit, the concentrated solution of one section reverse osmosis/nano-filtration unit discharge enters two sections reverse osmosis/nano-filtration unit after the topping-up pump supercharging, the concentrated solution of two sections reverse osmosis/nano-filtration unit discharges enters three sections reverse osmosis/nano-filtration unit behind recycle pump, the concentrated solution partial discharge of three sections reverse osmosis/nano-filtration unit, a part is back to recycle pump and enters three sections reverse osmosis/nano-filtration unit once more and handle one section, two sections, the product water of three sections reverse osmosis/nano-filtration unit is discharged as reuse water after mixing together.This system compares with nanofiltration system with the existing standard reverse osmosis, can reduce the membrane flux that single hop reverse osmosis/nanofiltration is handled by system being increased to syllogic reverse osmosis/nanofiltration membrane treatment; By setting up intersegmental topping-up pump two sections reverse osmosis/nano-filtration unit, the mould that can compensate one section reverse osmosis/nanofiltration is fallen, and improves the membrane flux of two sections reverse osmosis/nano-filtration unit; By setting up recycle pump three sections reverse osmosis/nano-filtration unit, the mould that can compensate two sections reverse osmosis/nano-filtration unit is fallen, improve the membrane flux of three sections reverse osmosis/nano-filtration unit, and before three sections partial concentration liquid can being back to the recycle pump of three sections parts, make the terminal concentrated stream amount of every putamina in every section reverse osmosis/nano-filtration unit reach certain set(ting)value, to improve every film surface velocity, the film that alleviates each section reverse osmosis/nano-filtration unit pollutes, and can improve the rate of recovery of system.Equipment steady running can be made, and the rate of recovery of system can be improved.The Organic pollutants waste water system rate of recovery of handling high density (COD is not less than the organic waste water of 100mg/L) in the reality can be up to 75-90%.
In sum, the reverse osmosis of the utility model embodiment and nanofiltration system adopt and reduce the single hop membrane flux, change three sections of one-levels into and set up intersegmental topping-up pump and three sections modes of setting up recycle pump at two sections, increased the hop count that reverse osmosis/nanofiltration is handled, make the terminal concentrated stream amount of every putamina in every section reverse osmosis/nano-filtration unit reach certain set(ting)value, and then improved every film surface velocity, thereby can alleviate film greatly pollutes, equipment steady running can be made, and the rate of recovery of system can be improved.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (10)
1, a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater is characterized in that, comprising:
Security personnel strainer, high-pressure pump, one section reverse osmosis/nano-filtration unit, topping-up pump, two sections reverse osmosis/nano-filtration unit, recycle pump, three sections reverse osmosis/nano-filtration unit and pipeline;
Described security personnel's strainer by the road, high-pressure pump is communicated with one section reverse osmosis/nano-filtration unit, described one section reverse osmosis/nano-filtration unit is cascaded into syllogic reverse osmosis/nanofiltration processing unit with two sections reverse osmosis/nano-filtration unit, three sections reverse osmosis/nano-filtration unit by the road successively, wherein, on the pipeline that is connected between described one section reverse osmosis/nano-filtration unit and the two sections reverse osmosis/nano-filtration unit topping-up pump is set, on the pipeline that is connected between described two sections reverse osmosis/nano-filtration unit and the three sections reverse osmosis/nano-filtration unit recycle pump is set; The concentrated solution outlet of described three sections reverse osmosis/nano-filtration unit is as the concentrated solution discharge outlet, and the product water out of described three reverse osmosis/nano-filtration unit is communicated with the back mutually and exports as reuse water.
2, a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater according to claim 1 is characterized in that the concentrated solution outlet of described three sections reverse osmosis/nano-filtration unit returns the inlet that is connected to recycle pump by the road.
3, a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater according to claim 1, it is characterized in that, described one section reverse osmosis/nano-filtration unit by the road successively with two sections reverse osmosis/nano-filtration unit, three sections reverse osmosis/nano-filtration unit are cascaded into syllogic reverse osmosis/nanofiltration processing unit and specifically comprise: the concentrated solution outlet of described one section reverse osmosis/nano-filtration unit is communicated with the organic waste water water-in of two sections reverse osmosis/nano-filtration unit by the road, and the concentrated solution outlet of described two sections reverse osmosis/nano-filtration unit is communicated with the organic waste water water-in of described three sections reverse osmosis/nano-filtration unit by pipeline.
4, a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater according to claim 1, it is characterized in that, on the pipeline that is connected between described one section reverse osmosis/nano-filtration unit and the two sections reverse osmosis/nano-filtration unit topping-up pump is set and specifically comprises: on the pipeline that is connected between the organic waste water water-in of the concentrated solution outlet of described one section reverse osmosis/nano-filtration unit and two sections reverse osmosis/nano-filtration unit, topping-up pump is set.
5, a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater according to claim 1 is characterized in that the supercharging scope of described topping-up pump is 2~5bar.
6, a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater according to claim 1, it is characterized in that, on the pipeline that is connected between described two sections reverse osmosis/nano-filtration unit and the three sections reverse osmosis/nano-filtration unit recycle pump is set and specifically comprises: on the pipeline that is connected between the organic waste water water-in of the concentrated solution outlet of described two sections reverse osmosis/nano-filtration unit and three sections reverse osmosis/nano-filtration unit, recycle pump is set.
7, a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater according to claim 1, it is characterized in that, the supercharging scope of described recycle pump is 2~5bar, and flow range is the concentrated solution discharge of two sections reverse osmosis/nano-filtration unit and the circulating fluid flow rate sum of three sections reverse osmosis/nano-filtration unit.
8, a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater according to claim 1 is characterized in that the average film flux of described one section reverse osmosis/nano-filtration unit is 22~18LMH.
9, a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater according to claim 1 is characterized in that the average film flux of described two sections reverse osmosis/nano-filtration unit is 21~17LMH.
10, a kind of reverse osmosis and nanofiltration system that is used to handle high concentrated organic wastewater according to claim 1 is characterized in that the average film flux of described three sections reverse osmosis/nano-filtration unit is 20~16LMH.
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101844843A (en) * | 2010-06-03 | 2010-09-29 | 友达光电股份有限公司 | Multistage wastewater treatment and recovery system |
CN102897944A (en) * | 2012-07-30 | 2013-01-30 | 北京伊普国际水务有限公司 | System for deeply processing difficultly degradable organic waste water |
CN103663762A (en) * | 2013-12-04 | 2014-03-26 | 南京中电环保股份有限公司 | Automatic anti-pollution reverse osmosis unit |
CN106946319A (en) * | 2017-03-31 | 2017-07-14 | 成都美富特膜科技有限公司 | Erythromycin thiocyanate extracts method of wastewater treatment and its equipment |
CN108191129A (en) * | 2017-12-22 | 2018-06-22 | 南京工业大学 | High salt waste water integrated processing system that contains of dicamba |
CN114057167A (en) * | 2021-12-15 | 2022-02-18 | 南通三圣石墨设备科技股份有限公司 | Sulfuric acid method titanium dioxide one-washing diluted waste acid film integrated recycling zero-discharge treatment method |
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2009
- 2009-04-27 CN CN2009201075688U patent/CN201424407Y/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101844843A (en) * | 2010-06-03 | 2010-09-29 | 友达光电股份有限公司 | Multistage wastewater treatment and recovery system |
CN102897944A (en) * | 2012-07-30 | 2013-01-30 | 北京伊普国际水务有限公司 | System for deeply processing difficultly degradable organic waste water |
CN103663762A (en) * | 2013-12-04 | 2014-03-26 | 南京中电环保股份有限公司 | Automatic anti-pollution reverse osmosis unit |
CN106946319A (en) * | 2017-03-31 | 2017-07-14 | 成都美富特膜科技有限公司 | Erythromycin thiocyanate extracts method of wastewater treatment and its equipment |
CN108191129A (en) * | 2017-12-22 | 2018-06-22 | 南京工业大学 | High salt waste water integrated processing system that contains of dicamba |
CN114057167A (en) * | 2021-12-15 | 2022-02-18 | 南通三圣石墨设备科技股份有限公司 | Sulfuric acid method titanium dioxide one-washing diluted waste acid film integrated recycling zero-discharge treatment method |
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