CN102580537B - Method for regenerating filter core of security filter - Google Patents
Method for regenerating filter core of security filter Download PDFInfo
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- CN102580537B CN102580537B CN201210055020.XA CN201210055020A CN102580537B CN 102580537 B CN102580537 B CN 102580537B CN 201210055020 A CN201210055020 A CN 201210055020A CN 102580537 B CN102580537 B CN 102580537B
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Abstract
The invention relates to a method for regenerating a filter core, and concretely relates to a method for regenerating performances of the filter core of a security filter in the sewage reuse. The method mainly comprises the following steps: 1, determining whether the filter core is polluted; 2, carrying out online sterilization by an bactericide; 3, carrying out online high-pressure flushing; 4, carrying out offline medicament solution immersion: selecting a sodium hypochlorite solution, a sodium hydroxide solution and a hydrochloric acid solution as cleaning medicaments; and 5, filling the regenerated filter core into the security filter for later use. The method which combines the online mode and the offline mode has the advantages of effective removal of filter core pollutants, realization of the reuse through the recovery of the performances of the filter core, system operation cost reduction, reduction of the pollution of waste and old filter cores to the environment, simple operation, and strong popularization.
Description
Technical field
The present invention relates to a kind of method of filter core regeneration, be specifically related to the method for filter core of security filter quality rebuilding in a kind of reusing sewage.
Background technology
Traditional desalination method generally adopts ion-exchange, electrodialysis etc., and in recent years along with scientific and technological development, the application of advanced reverse osmosis deaslination technology spreads all over the countries such as the U.S., Japan, France, Italy.China starts to introduce reverse osmosis unit in the water treatment in power plant the end of the seventies, the developing and become focus of the reverse osmosis membrane nineties, reverse osmosis technology is mainly used in the wastewater treatments such as desalinization, pure water and ultra-pure water preparation, city water processing, municipal sewage treatment and application, industrial electro waste electroplating and pulp and paper industry wastewater treatment, chemical wastewater treatment, food industry, medical industry now, and applies at present in more iron and steel enterprise's waste water desalting processing.
In all application reverse osmosis technology designs, all will design cartridge filter before counter-infiltration, as last one barrier of reverse osmosis membrane, effect is further to remove the molecule in anhydrating, and guarantees reverse osmosis water quality requirement.In the middle of actual motion, in sewage, not only there is residual fine particle shape material, but also have colloid, organic matter and microorgranic contaminant etc., so filter core of security filter in use for some time, filter core can be polluted and be stopped up, and aquifer yield can reduce, and the inlet outlet pressure differential of filter rises.In application when filter inlet outlet pressure differential be greater than when setting value should be in time renew cartridge more, filter core life cycle is relevant with filtering water situation and water temperature, general water after hyperfiltration treatment, the life cycle of security personnel's filter core is 3 months, summer, life cycle was shorter, the expense of annual more renew cartridge is very high, the easy contaminated environment of waste and old filter core of changing.
Filter core pollutes surface coverage pollution and the two kinds of forms of filter opening internal congestion pollution of mainly containing.Cartridge surface pollution layer is roughly double-decker, the unconsolidated formation that upper strata is larger particles, and lower floor is close on filter core face, is the fine and smooth layer of small particle diameter.Generally, unconsolidated formation can rinse out under the effect of flow shear, can not produce too much influence to the performance of filter core, one of principal element that the fine and smooth layer of filter core face is dirty stifled filter core.
Summary of the invention
In order to overcome above-mentioned deficiency, the present invention aims to provide a kind of method of regenerating filter core of security filter, and the filter core of having lost by strainability makes filter core quality rebuilding, and recycling reduces system operation cost, also reduces waste and old filter core contaminated environment.
The present invention adopts following technical scheme:
The way that renovation process adopts online (in water treatment procedure) and off-line (filter core is replaced, and throws off with water treatment system) to combine, mainly comprises the following steps:
(1) judge that filter core is contaminated: filter core is in daily product water process, and product discharge reduces gradually and water-in and water-out pressure reduction is greater than 0.1MPa, shows that filter core is contaminated;
(2) online bactericide sterilization: non-oxide microbicide solution is added in cartridge filter water inlet pipe with measuring pump, continue 1 hour;
(3) online high pressure washing: cartridge filter elevator pump frequency conversion frequency is heightened to 55Hz, improved hydraulic pressure to 0.5 ~ 0.6MPa, continue 40 minutes;
(4) off-line liquid soaks: filter core is put into regeneration case, and first, hydrogen injecting sodium hydroxide solution is soaked 48 hours, and every 4 hours during this time upset filter cores once; Then use demineralized water filter cartridge flushing, until rush the electricity of Xian Shui lead with former water with, be and rinse well; Rush Xian Wanhou, then toward regeneration, inject HCl solution in case and soak 48 hours, same every 4 hours upset filter cores once, and then use demineralized water filter cartridge flushing, until rush the electricity of Xian Shui, lead with former water together, are and rinse well; Then inject liquor natrii hypochloritis and soak 4 hours, finally with demineralized water, clean up, In Shade dry, can reuse; The volume of regeneration case is 1m
3;
(5) after regeneration, filter core packs in cartridge filter standbyly, first uses non oxidizing bactericide sterilization before use, and method is identical with method described in (2) step.
In such scheme, described non-oxide bactericide is bromine analog derivative bactericide.Described bromine analog derivative bactericide is preferably SW655 film bactericide specially.
In such scheme, the concentration of described non-oxide microbicide solution is 200 ppm, and consumption is 180 ~ 200L/h.
In such scheme, described liquor natrii hypochloritis is made into the solution that concentration is 5000ppm, and sodium hydroxide solution is made into the solution that concentration is 4000ppm, and hydrochloric acid is made into the solution that concentration is 7500ppm.
By analysis form and the material that filter core pollutes of ensuring public security, determine method targetedly.The form that security personnel's filter core pollutes is divided into covering pollution and filter opening internal congestion pollutes two kinds; Pollutant has colloid pollution, Organic Pollution and microbial contamination.
Summer, autumn water temperature higher, in water, microbial growth is fast, 3 non-oxide bactericide sterilizations are carried out weekly in the filter core microbial contamination that prevents from ensuring public security, and continue 1 hour at every turn.Not only protect cartridge filter but also can prevent the raw fouling of postorder reverse-osmosis membrane element, the method is on-line regeneration method.
For the regeneration way that covers pollution layer, can take weekly online high pressure washing once, continue 40 minutes at every turn.Method is with (3) step in such scheme: by promoting pump frequency conversion frequency before security personnel, heighten to 55Hz, improve hydraulic pressure to 0.5 ~ 0.6MPa.
The regeneration way of polluting for filter opening internal congestion is that off-line liquid soaks, and the material that uses the kind of liquid to pollute according to filter core is selected.Through long-term operation chemical analysis and observation, the pollution of filter core is that the plyability of colloid, Organic Pollution, microbial contamination pollutes, and rare absolutely single middle material pollutes.
Medicament kind is determined: NaClO solution is applicable to microbial contamination, and NaOH solution is applicable to Organic Pollution, and citric acid or hydrochloric acid are applicable to iron pollution, the dirty stifled and part colloid of carbonate crystallization.Owing to being that plyability pollutes, therefore above kind liquid all will be used.Medicament matched proportion density is determined: through test of many times, determine the solution that NaClO wiring solution-forming concentration is 5000ppm, NaOH solution concentration is 4000ppm, and the solution that hydrochloric acid wiring solution-forming concentration is 7500ppm is used three kinds of medicaments.
According to the common filter core of experience, after polluting, through regeneration, reuse after three times, just can scrap.
Beneficial effect of the present invention: pollution form and the polluter of (1) the present invention to filter core of security filter in reusing sewage analyzed, select targetedly rational regenerative agent and concentration, can effectively remove filter core pollutant, recover the performance of filter core, recycling; (2) the method has adopted online and two kinds of modes of off-line to combine, before having accomplished to pollute simultaneously prevention and pollute after regeneration, novelty is original, uses effective; (3) the method is described clearly, and method is simple, and the equipment, the facility that apply to are common, easy and simple to handle, therefore generalization is strong.
Below in conjunction with embodiment, the present invention will be further described.
the specific embodiment
Embodiment: the method for regenerating filter core of security filter:
Filter core is in daily product water process, and product discharge reduces gradually and water-in and water-out pressure reduction is greater than 0.1MPa, judges that filter core is contaminated, adopts following steps regeneration:
(1) online bactericide sterilization: the on-the-spot Tai meter Dun Luo measuring pump of installing, the non-oxide microbicide solution that is 200ppm by concentration, i.e. SW655 film bactericide specially, adds in cartridge filter water inlet pipe, continues 1 hour; Bactericide consumption calculates take separate unit: (the separate unit filter process water yield is 270-300m to 180-200L/h
3/ h, liquid is pure non-oxide bactericide), concentration is 200 ppm;
(2) online high pressure washing: cartridge filter elevator pump frequency conversion frequency is heightened to 55Hz, improved hydraulic pressure to 0.5 ~ 0.6MPa, continue 40 minutes;
(3) off-line liquid soaks: the filter core splitting out is put into 1m
3in regeneration case, first, the sodium hydroxide solution that implantation concentration is 4000ppm soaks 48 hours, and every 4 hours during this time upset filter cores once; Then use demineralized water filter cartridge flushing, until rush the electricity of Xian Shui lead with former water with, be and rinse well; Rush Xian Wanhou, then toward implantation concentration in regeneration case, being 7500ppm, HCl solution soaks 48 hours, same every 4 hours upset filter cores once, and then use demineralized water filter cartridge flushing, until rush the electricity of Xian Shui, lead with former water together, are and rinse well; Then implantation concentration is that 5000ppm liquor natrii hypochloritis soaks 4 hours, finally with demineralized water, cleans up, In Shade dry, can reuse;
(4) after regeneration, filter core packs in cartridge filter standbyly, first uses non oxidizing bactericide sterilization before use, and method is identical with method described in (1) step.
In Taiyuan Iron and Steel Co. energy source and power head factory, in the employing of water depth treating stations, water is water source, adopts two embrane methods to carry out advanced desalination processing, produces water and reaches demineralized water standard, and electricity is led below 70 us/cm, as Taiyuan Iron and Steel Co., produces the high-quality water that stainless steel is used.Wherein before counter-infiltration, be provided with cartridge filter, mode is operation one to one.10 of cartridge filters are installed, every in-built 5 diameter of filter the are 6 large flow folding type filter element of ", length be 40 ", initial operating stage filter core life cycle is 3 months, and every 3 lunar periodicities are changed a filter core, and consuming every year spare part expense is more than 100 ten thousand yuan.Invent after this renovation process, reduced the consumption of filter core, extended to 7-9 month by original 3 months the service life of filter core.Save spare part expense and reduce costs, reduce the pollution of industrial refuse to environment simultaneously, filter core usage quantity is reduced to original nearly 25%, and the expense of purchasing every year filter core is reduced to below 300,000 yuan.
Claims (1)
1. a method for regenerating filter core of security filter, adopts way online and that off-line combines, it is characterized in that: mainly comprise the following steps:
(1) judge that filter core is contaminated: filter core is in daily product water process, and product discharge reduces gradually and water-in and water-out pressure reduction is greater than 0.1MPa, shows that filter core is contaminated;
(2) online bactericide sterilization: non-oxide microbicide solution is added in cartridge filter water inlet pipe with measuring pump, continue 1 hour;
(3) online high pressure washing: cartridge filter elevator pump frequency conversion frequency is heightened to 55Hz, improved hydraulic pressure to 0.5 ~ 0.6MPa, continue 40 minutes;
(4) off-line liquid soaks: filter core is put into regeneration case, and first, hydrogen injecting sodium hydroxide solution is soaked 48 hours, and every 4 hours during this time upset filter cores once; Then use demineralized water filter cartridge flushing, until rush the electricity of Xian Shui lead with former water with, be and rinse well; Rush Xian Wanhou, then toward regeneration, inject HCl solution in case and soak 48 hours, same every 4 hours upset filter cores once, and then use demineralized water filter cartridge flushing, until rush the electricity of Xian Shui, lead with former water together, are and rinse well; Then inject liquor natrii hypochloritis and soak 4 hours, finally with demineralized water, clean up, In Shade dry, can reuse; The volume of regeneration case is 1m
3;
Described liquor natrii hypochloritis is made into the solution that concentration is 5000ppm, and sodium hydroxide solution is made into the solution that concentration is 4000ppm, and hydrochloric acid is made into the solution that concentration is 7500ppm;
(5) after regeneration, filter core packs in cartridge filter standbyly, first uses non oxidizing bactericide sterilization before use, and method is identical with method described in (2) step;
Described non-oxide bactericide is bromine analog derivative bactericide; The concentration of non-oxide microbicide solution is 200 ppm, and consumption is 180 ~ 200L/h;
Described bromine analog derivative bactericide is SW655 film bactericide specially.
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| CN201210055020.XA CN102580537B (en) | 2012-03-05 | 2012-03-05 | Method for regenerating filter core of security filter |
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| CN201210055020.XA CN102580537B (en) | 2012-03-05 | 2012-03-05 | Method for regenerating filter core of security filter |
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| CN102580537A CN102580537A (en) | 2012-07-18 |
| CN102580537B true CN102580537B (en) | 2014-04-16 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108079668A (en) * | 2016-11-22 | 2018-05-29 | 东莞新科技术研究开发有限公司 | The cleaning method of filter screen |
| CN109304128B (en) * | 2017-07-26 | 2024-01-23 | 上海至纯洁净***科技股份有限公司 | Liquid medicine preparation system with T-shaped liquid filter and cleaning method thereof |
| CN108786280A (en) * | 2018-06-13 | 2018-11-13 | 山西太钢不锈钢股份有限公司 | A kind of water treatment filter filter element cleaning system and cleaning method |
| CN109081506A (en) * | 2018-08-24 | 2018-12-25 | 盐城英贝吉环保科技有限公司 | A kind of chemical engineering sewage filter device and its method for cleaning |
| CN109052830A (en) * | 2018-08-24 | 2018-12-21 | 盐城英贝吉环保科技有限公司 | Chemical engineering sewage filter device and its method for cleaning |
| CN110327784B (en) * | 2019-05-23 | 2020-10-02 | 岳阳林纸股份有限公司 | Security filter and sterilization method of reverse osmosis membrane |
| CN111318086B (en) * | 2020-03-12 | 2020-11-06 | 山鹰国际控股股份公司 | Cleaning process of cartridge filter element |
| CN114307399A (en) * | 2021-12-31 | 2022-04-12 | 福建泉州闽光钢铁有限责任公司 | Method for cleaning filter element |
| CN115895789B (en) * | 2022-10-31 | 2024-06-25 | 华能济宁运河发电有限公司 | Universal cleaning agent for cleaning cartridge filter element of cartridge filter and online cleaning process |
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| CN100581641C (en) * | 2006-03-20 | 2010-01-20 | 天津化工研究设计院 | Bactericide for reverse osmosis membrane and method for preparing the same |
| CN101138704A (en) * | 2007-06-12 | 2008-03-12 | 山西太钢不锈钢股份有限公司 | Processing method of filter-core of osmosis- reverse system |
| CN102107118B (en) * | 2011-01-12 | 2013-02-27 | 杭州英普水处理技术有限公司 | Reverse osmosis safety filter with cleaning function and cleaning method thereof |
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