CN103241859A - Method for eliminating bactericide crystals in water treatment - Google Patents
Method for eliminating bactericide crystals in water treatment Download PDFInfo
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- CN103241859A CN103241859A CN2013101345885A CN201310134588A CN103241859A CN 103241859 A CN103241859 A CN 103241859A CN 2013101345885 A CN2013101345885 A CN 2013101345885A CN 201310134588 A CN201310134588 A CN 201310134588A CN 103241859 A CN103241859 A CN 103241859A
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- bactericide
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Abstract
The invention provides a method for eliminating bactericide crystals in water treatment, which comprises steps as follows: 1. a decarbonated reverse osmosis water outlet pipeline is directly connected with a bactericide case valve, and outlet water is used as dilution water of the bactericide case to prevent the crystals from generation; and 2. the decarbonated reverse osmosis water outlet pipeline is connected with a mixing bed, and then connected with the bactericide case valve, and outlet water is used as dilution water of the bactericide case to prevent the crystals from generation. The reverse osmosis outlet water is decarbonated by a decarbonation blower to obtain the decarbonated reverse osmosis water, and 0.4-0.6 ton of water is consumed every day. The concentration of the bactericide liquor is 4-10%, and 10-30L of bactericide liquor is added every hour to prevent the bacteria in raw water from generation and propagation.
Description
Technical field
The present invention relates to the disposal to the sterilant crystallization, utilize and remove CO
2The reverse osmosis water outlet as diluent, the crystallization method of eliminating sterilant is extremely effective, has outstanding productivity effect and using value.
Background technology
In water treatment field, adding of former water pretreatment sterilant is unusual critical step, the quality of former water sterilization effect and the stable safety and economic operation that directly influences follow-up equipment, sterilization effect does not with great difficulty make the follow-up equipment breed bacteria, the quick growth of a large amount of bacteriums is blocked equipment, even jeopardize safe operation, deal with improperly and also can make equipment be in bad state for a long time.The steady and continuous operation of sterilant dosing pump normally adds, and also has the drug feeding pipeline of pump because the accumulation of xln makes dosing not smooth except the normal operation of pump, adds and removes CO
2Reverse osmosis water outlet (namely mix bed water inlet) as the sterilant dilution water, can make soup not have xln to generate, thereby ensure that the stable of sterilant normally adds in the former water, with original technology not remove CO
2The reverse osmosis water outlet be easy to generate xln relatively as the sterilant dilution water, effect is very obvious.
Generally adopt at sterilant soup crystallisation problems, 1) add the two-pass reverse osmosis water outlet as diluent, dilution mixing post crystallization situation still can, but can not thoroughly solve, can only keep about three weeks the wash water valve termination of pumping recoil that utilizes drug feeding pipeline to set up by the dosing pump outlet then.2) take the termination of pumping maintenance to fail and lead to, dismounting dosing pump internal pipeline element, to solve except the mode of decrystallizing, the termination of pumping maintenance frequency is very high with acid soak, and the while is because of the termination of pumping maintenance, and stand-by pump also has latch up phenomenon, the sterilant dosing stops, and influences sterilization effect.3) method of the pure adding sterilant stoste of employing generally is used in adding in the circulating water pool.Original technology is to add 10cm sterilant stoste under the sterilant medicine-chest liquid level during to 30cm to add and utilize the sterilant dosing pump to squeeze into raw water pipeline behind the 60cm reverse osmosis water outlet mixing to carry out sterilization, medicine-chest adds sterilant stoste and after the about week of reverse osmosis water outlet, the xln of one deck yellowing look is arranged at the medicine-chest bottom, the dosing pump internal pipeline has crystallization to generate and makes the dosing pump drug not smooth, changes sterilant stoste and the reverse osmosis water outlet proportioning situation trend that do not take a turn for the better substantially.
The present invention is directed to original sterilant dilutes with reverse osmosis water, reverse osmosis water is not handled through removing carbon dioxide, free carbon dioxide soluble in water is that carbonic acid is diprotic acid, generation is insoluble in the carbonate deposition crystallization of water and separates out, thorny problem is stated in the dosing of obstruction dosing pump etc., the laying pipeline as thinner, directly adds the technique effect that the sterilant medicine-chest has been realized the prevention crystallization with two sections water of removing carbonic acid gas, shows technical progress.
Summary of the invention
Order of the present invention is: the prevention crystallization method that provides, be will remove carbonic acid gas the reverse osmosis water outlet as thinner, add the technique effect that the sterilant medicine-chest has been realized the prevention crystallization, scrap build is simple, and is workable, has important practical value.
The object of the present invention is achieved like this: a kind of method of eliminating sterilant crystallization in the water treatment comprises pretreatment system, ultrafiltration system, reverse osmosis system, mixed-bed system;
The reverse osmosis water outlet pipeline that step 1 will be removed carbonic acid gas directly is connected with sterilant medicine-chest valve, with the dilution water of its drainage water as the sterilant medicine-chest, in case xln generates;
The reverse osmosis water outlet pipeline that step 2 will be removed carbonic acid gas connects mixed bed, is connected with sterilant medicine-chest valve after bed is disposed through mixing, with the dilution water of its drainage water as the sterilant medicine-chest, in case the xln generation;
Wherein the water outlet of reverse osmosis unit is removed carbonic acid gas through the removing carbon dioxide blower fan, must remove the reverse osmosis water of carbonic acid gas, every day water 0.4-0.6 ton; The concentration of sterilant soup is 5%-10%, and per hour dosage is 10L-30L, in case the growing and spread of bacterium in the former water.
The principle of the invention and effect: at the defeated logical sterilant dosing pump of maintenance because xln stops up internal pipeline when causing the not smooth fault of dosing, by careful observation analysis, judge that xln is the carbonate nucleus, when occurring the carbonate deposition xln in the solution during carbonate supersaturation easily.Original technology sterilant medicine-chest dilution reverse osmosis water outlet, the reverse osmosis water outlet is not handled through removing carbon dioxide, free carbon dioxide soluble in water is that carbonic acid is diprotic acid, it reacts with the non-carbonate hardness in the water, generation is insoluble in the carbonate deposition of water, the carbonate deposition crystallization is separated out, be attached to medicine-chest bottom or dosing pump internal pipeline, the dosing of blocking dosing pump, at above-mentioned thorny problem, the present invention lay pipeline with two sections water of removing carbonic acid gas as thinner, directly add the technique effect that the sterilant medicine-chest has been realized the prevention crystallization, show technical progress.
Description of drawings
The present invention is described further by reference to the accompanying drawings.
Accompanying drawing is the process flow diagram of present method:
--more medium filter--ultrafiltration-reverse osmosis unit-de-carbon blower fan--reverse osmosis water--mix bed---desalination-boiler as shown in the figure: former water; Wherein connect to mix on the pipeline of bed at the reverse osmosis water tank, lay by-pass line, connect the sterilant medicine-chest, simultaneously mix bed and sweet-water tank be connected on the pipeline, lay by-pass line, connection sterilant medicine-chest.
Embodiment
The present invention will be described further in conjunction with the embodiments.
Embodiment
Treated water is as gas blower station, newly developed area and coke dry quenching boiler moisturizing.
Major equipment: 6 more medium filters, 3 cover ultrafiltration systems, 3 overlap reverse osmosis units, 3 mixed beds.
1) more medium filter is for the suspended substance of removing water and colloid partial organic substances etc., and filtrate adopts hard coal and quartz sand.
2) ultra-filtration membrane employing material is the tubular fibre of PVDF, and the external-compression type design has good separating power to colloid, suspended particle, colourity, turbidity, bacterium, larger molecular organics.
3) reverse osmosis system is mainly removed dissolved salts in the water, removes small-particle that some macromole and last stage do not remove etc. simultaneously, and major function is to coming water to carry out desalination through pretreated.
4) mixed-bed system, enters mixed bed again and carries out smart desalination processing after the pre-desalting treatment of former water process reverse osmosis for the smart desalination processing of reverse osmosis water outlet, can further remove the zwitterion in the water, guarantees that effluent quality reaches product water water quality requirement.
5) system's dosing comprises the oxygenant (sterilant) that prevents ultra-filtration membrane microbial contamination; Prevent the reductive agent that reverse osmosis membrane is oxidized; The Scale inhibitors of the dense water side deposition of inhibition reverse osmosis membrane, flocculation agent, cleaning agent etc.Chemicals dosing plant is made up of with corresponding volume pump the molten medicine-chest of soup, is used for quantitatively adding soup to corresponding water.
6) the de-carbon blower fan is used for removing carbonic acid gas soluble in water, reduces and mixes the bed burden.
Important equipment improvement:
1) lays arm from removing the mixed bed of a carbonic acid gas connection back with water inlet line, connect the sterilant medicine-chest, as dilution water.
2) lay water pipe from the mixed bed water outlet pipeline of removing carbonic acid gas and introduce the sterilant medicine-chest as dilution water.
The reverse osmosis water outlet of removing carbonic acid gas of above-mentioned twice use, all be that the reverse osmosis water outlet is through the removing carbon dioxide blower fan, remove the water of carbonic acid gas, every day, water was 0.5 ton, added sterilant medicine-chest dilution sterilant stoste, the sterilant soup was made into 5% or 8% or 10% concentration, utilize the sterilant dosing pump, per hour add the sterilant soup of 10L or 20L or 30L in the raw water pipeline, in case the growing of bacterium in the former water spread.The clorox sterilant of selecting for use is produced by safe chemical limited-liability company in the Xinjiang.
The checking of experimental data: see the following form.
| Sterilant stoste 2ml | Solution situation when adding reverse osmosis water outlet 8ml dilution | Add solution situation when mixing bed water inlet 8ml dilution | Add solution situation when mixing bed water outlet 8ml dilution |
| Solution situation after one day | Solution develops the color slightly | Solution is colourless | Solution is colourless |
| Solution situation two days later | 2ml showed faint yellow bottom the about 8ml in solution top developed the color slightly | Solution is colourless | Solution is colourless |
| Solution situation after three days | 1ml showed faint yellow intensification bottom the about 9ml in solution top developed the color slightly | Solution is colourless | Solution is colourless |
Learnt by last table data: after sterilant stoste adds reverse osmosis water outlet dilution, have precipitation to generate.All not having precipitation after sterilant stoste adds the reverse osmosis water outlet (namely mixing the bed water inlet) of removing carbonic acid gas or better mixes the bed water outlet generates.
Present method effect: after improvement project in 2012 was implemented, sterilant medicine-chest and sterilant dosing pump did not all have the crystallization generation so far, and economic benefit is as follows:
1) saved 96 hours than originally during the check man;
2) change reverse osmosis front end security personnel filter element, need to change 6 times former every year, and improving the back needs to change 25920 yuan of annual cost savings 4 times every year;
3) reverse osmosis matting between turn(a)round, chemical consumption takes by being down to 3600 yuan 4800 yuan of original every year.
Claims (1)
1. a method of eliminating sterilant crystallization in the water treatment is characterized in that: comprise pretreatment system, ultrafiltration system, reverse osmosis system, mixed-bed system;
The reverse osmosis water outlet pipeline that step 1 will be removed carbonic acid gas directly is connected with sterilant medicine-chest valve, with the dilution water of its drainage water as the sterilant medicine-chest, in case xln generates;
The reverse osmosis water outlet pipeline that step 2 will be removed carbonic acid gas connects mixed bed, is connected with sterilant medicine-chest valve after bed is disposed through mixing, with the dilution water of its drainage water as the sterilant medicine-chest, in case the xln generation;
Wherein the water outlet of reverse osmosis unit is removed carbonic acid gas through the removing carbon dioxide blower fan, must remove the reverse osmosis water of carbonic acid gas, every day water 0.4-0.6 ton; The concentration of sterilant soup is 5%-10%, and per hour dosage is 10L-30L, in case the growing and spread of bacterium in the former water.
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| CN2013101345885A CN103241859A (en) | 2013-04-17 | 2013-04-17 | Method for eliminating bactericide crystals in water treatment |
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| CN2013101345885A CN103241859A (en) | 2013-04-17 | 2013-04-17 | Method for eliminating bactericide crystals in water treatment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59102492A (en) * | 1982-12-06 | 1984-06-13 | Mitsubishi Heavy Ind Ltd | Method for preventing deposition of scale in evaporation type seawater desalination apparatus |
| JPS62294484A (en) * | 1986-06-13 | 1987-12-21 | Shinko Fuaudoraa Kk | Reverse osmosis treatment of water containing silica at high concentration |
| CN1880238A (en) * | 2005-06-16 | 2006-12-20 | 国家海洋局杭州水处理技术开发中心 | Air purification cooling waste water treatment method for viscose glue fiber workshop |
| CN101798150A (en) * | 2010-02-11 | 2010-08-11 | 北京新源国能工程技术有限公司 | Treatment method of wastewater with high salt content and treatment device thereof |
| CN102897939A (en) * | 2011-07-28 | 2013-01-30 | 江苏晋煤恒盛化工有限公司 | Reverse osmosis process |
-
2013
- 2013-04-17 CN CN2013101345885A patent/CN103241859A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59102492A (en) * | 1982-12-06 | 1984-06-13 | Mitsubishi Heavy Ind Ltd | Method for preventing deposition of scale in evaporation type seawater desalination apparatus |
| JPS62294484A (en) * | 1986-06-13 | 1987-12-21 | Shinko Fuaudoraa Kk | Reverse osmosis treatment of water containing silica at high concentration |
| CN1880238A (en) * | 2005-06-16 | 2006-12-20 | 国家海洋局杭州水处理技术开发中心 | Air purification cooling waste water treatment method for viscose glue fiber workshop |
| CN101798150A (en) * | 2010-02-11 | 2010-08-11 | 北京新源国能工程技术有限公司 | Treatment method of wastewater with high salt content and treatment device thereof |
| CN102897939A (en) * | 2011-07-28 | 2013-01-30 | 江苏晋煤恒盛化工有限公司 | Reverse osmosis process |
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Application publication date: 20130814 |