CN101955245A

CN101955245A - Regeneration intermittent washing process for water treatment demineralizer

Info

Publication number: CN101955245A
Application number: CN 201010125219
Authority: CN
Inventors: 张汉
Original assignee: KELAMAYI BORUI TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: KELAMAYI BORUI TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2010-03-16
Filing date: 2010-03-16
Publication date: 2011-01-26

Abstract

The invention relates to a regeneration intermittent washing process for a water treatment demineralizer, which comprises the following steps of: primary washing, namely filling water into a primary tank, and emptying for three times; and secondary washing, namely opening inlet and outlet valves of the primary tank, filling water into a secondary tank, and emptying for three times. In the intermittent washing mode, for washing, a container is emptied, the water is filled into the container, the container is emptied again, and the integral processes of water inflow and drainage are performed for three times; therefore, a large volume of washing water is saved. The regeneration intermittent washing process has the advantages of reducing the pollution of salt sewage to peripheral environment, along with obvious water-saving and salt-saving benefit and short investment recovery period.

Description

A kind of water treating softener device regeneration intermittent type is just being washed technology

Technical field

The present invention relates to a kind of improvement of the technology of just washing when the ion exchange resin water softener was lost efficacy the back manipulation of regeneration, especially a kind of water treating softener device regeneration intermittent type is just being washed technology.

Background technology

In the known technology, industry or domestic use of water need to carry out softening water sometimes to be handled, and common boiler feed water must be removed calcium, magnesium ion, generally the water of removing calcium, magnesium ion is called soft water, and the device of removing calcium, magnesium ion is called softening agent.What load in the general softening agent is sodium ion exchange resin, there is a large amount of sodium ions on the surface of resin when containing calcium, when the hard water of magnesium ion flows through resin, the calcium ions and magnesium ions in the water and the sodium ion of resin surface exchange, at last, total calcium ions and magnesium ions has occupied resin surface, the sodium ion of resin surface then enters in the water, hard water just is softened and is processed into soft water like this, resin surface is occupied by calcium ions and magnesium ions fully after water softener moves for some time, resin surface has not had sodium ion, softening agent has been lost softening power, this state is called " inefficacy ", softening agent is carried out the manipulation of regeneration of restore funcitons, method is to use certain density salt solution, it is sodium chloride aqueous solution, enter softening agent, the sodium ion that high density is arranged in the salt solution, can be the calcium of resin surface, magnesium ion is changed, allow calcium ions and magnesium ions enter in the salt solution, and then having occupied the such softening agent of resin surface, the sodium ion in the salt solution had softening power, make regenerating softener, the sodium chloride aqueous solution that dissolves into calcium ions and magnesium ions is also referred to as regenerated liquid.

Softening agent is made of one-level jar and two jars of secondary jar of connecting through pipeline usually, and the regenerative process of softening agent generally comprises: backwash, advance salt, displacement, once just washing with secondary and operation such as just washing.Softening agent is after operation for some time, a large amount of water sees through resin with the resin compacting, flow resistance increases when causing resin to weaken gradually with contacting of water, and the suspended substance in the water deposits on resin layer top gradually, to be exactly water from softening pot bottom enter at last discharges from top in backwash, thus loose resin and sedimentary foreign material are discharged; Then, exactly certain density salt solution is entered from the secondary pot bottom, enter the one-level tank top from the secondary tank top again, discharge from the one-level pot bottom again, finish into salt operation; Be exactly the salt solution of secondary jar to be substituted into the one-level jar subsequently and replace, allow sodium ion in the salt solution and calcium, the magnesium ion on the resin in the one-level jar exchange with the softening water of other group softening agents; Afterwards, once just wash, after promptly the calcium ions and magnesium ions on mesohalobic sodium ion of one-level jar and the resin exchanged, the regenerated liquid that is produced came out with flushing with clean water; After once just washing, the process of using the water that comes out from the one-level jar that secondary jar regenerated liquid is rinsed well is called secondary and just washes.After these 5 steps are finished, had softening power again through functional regeneration process softening agent.

Once just washing in above process with the secondary the wash water all is to out while advancing, band is pressed flushing, till regenerated liquid being rinsed well always, with existing nearly 300 calculating of injection boiler, every day, water loss was about 8.5 ten thousand sides, wherein about water treatment regeneration and other supplement production waters 1.5 ten thousand sides, first and second water consumption of just washing two processes accounts for 7% of uphole steam generator water consumption.This is very big to water resource waste, effluxes a large amount of brine wastes simultaneously environment is also caused bigger pollution.

Comparatively speaking, just washing process technology scheme at above insufficient improvement does not see open.

Summary of the invention

The purpose of this invention is to provide and a kind ofly just washing technology guaranteeing just to wash the regenerating softener that requires to effectively reduce the water consumption under the prerequisite, promptly a kind of water treating softener device regeneration intermittent type is just being washed technology.The measure that realizes the object of the invention comprises that one-level is just washed: with the water inlet of one-level jar, emptying three times; Secondary is just washed: open the terminal valve of one-level jar, with the water inlet of secondary jar, emptying three times.

The invention has the advantages that: by intermittent type just the mode of washing be when just washing earlier vessel empty, intake then container filled, emptying again, whole process water inlet draining can achieve the goal for three times, thus a large amount of saving positive scouring water amount.Reduce positive scouring water 70%～75%, water-saving benefit and joint salt remarkable benefit, the payback period is short.Reduce of the pollution of salt sewage to environment on every side.

Embodiment

Embodiment 1: one-level is just washed: with the water inlet of one-level jar, emptying three times; Secondary is just washed: open the terminal valve of one-level jar, with the water inlet of secondary jar, emptying three times.

Backwash process only carries out back flushing to the one-level jar, after back flushing finishes with one-level jar, the emptying of secondary jar; Advance to close all blowdown blow-off valves in the salt process, advance the salt amount and demarcate at the scene; Earlier do not open wash water valve in the replacement process, the on-site proving metathetical time, stop into water then; After replacing water enters when advancing the salt immersion, soaked 5-10 minute, carry out emptying then, respectively the wash water valve of one-level jar and secondary jar, the vacuum pressure valves of abhiseca are opened simultaneously, emptying time is demarcated at the scene; Especially, one-level is just washed: with the water inlet of one-level jar, emptying twice, flooding time and emptying time are demarcated at the scene, according to the situation at scene, can increase certain soak time between water inlet and emptying, and regeneration effect can be better like this; Secondary is just washed: open the terminal valve of one-level jar, with the water inlet of secondary jar, emptying three times, the time of water inlet emptying is demarcated at the scene, according to the situation at scene, can increase certain soak time between water inlet and emptying, and regeneration effect can be better like this; Changing operation over to prepares: emptying finishes, and closeall vacuum pressure valves is only opened the secondary that the secondary wash water valve carries out standard and just washed process 3-5 minute, changes running status over to after the test water hardness is qualified.

Transform previous stage just the time of washing be approximately 30 minutes, water consumption is 8.68m ³, the secondary time of just washing also is about 30 minutes, water consumption is 4.87m ³, a regeneration period water consumption is greatly about 13.55m ³Transform the back one-level and just washing into water discharging three times, amounting to water consumption is 2.42m ³About, secondary is just being washed into water discharging three times, and amounting to water consumption is 1.39m ³About, a regeneration period water consumption is greatly about 3.81m ³About, just washing 4 minutes, and pressing 10m for three times ³Per hour calculate, water consumption is at 0.6m ³About, water consumption amounts to 4.41m during so just washing ³A regeneration period can economize on water greatly about 9.14m after tested ³About, water-saving rate 71.9%.

First grade discharging water and the difference of unboiled water chlorine root that enters one-level are less than 50mg/L; Secondary discharge water and the difference of unboiled water chlorine root that enters one-level are less than 25mg/L, and discharge water hardness is less than 0.25mg/L; Advancing the salt weaker concn is 10%; Displacement concentration is 1.5%.

Present embodiment is at the prior art deficiency, the technological improvement thinking is, when just washing beginning, water does not advance to soften earlier jar, but the regenerated liquid that will soften in the jar bleeds off, and with less water softening jar carried out three flushings then and just can clean regenerated liquid fully, because water inlet and draining are separately carried out, so water consumption seldom, so just reach the purpose of conserve water.

The advantage of present embodiment is: by intermittent type just the mode of washing be when just washing earlier vessel empty, intake then container filled, emptying again, whole process water inlet draining can achieve the goal for three times, thus a large amount of saving positive scouring water amount.Reduce positive scouring water 70%～75%, water-saving benefit and joint salt remarkable benefit, the payback period is short.Reduce of the pollution of salt sewage to environment on every side.

Claims

1. a water treating softener device regeneration intermittent type is just being washed technology, it is characterized in that one-level is just washed: with the water inlet of one-level jar, emptying three times; Secondary is just washed: open the terminal valve of one-level jar, with the water inlet of secondary jar, emptying three times.

2. a kind of water treating softener device regeneration intermittent type as claimed in claim 1 is just being washed technology, it is characterized in that backwash process only carries out back flushing to the one-level jar, after back flushing finishes with one-level jar, the emptying of secondary jar; Advance to close all blowdown blow-off valves in the salt process, advance the salt amount and demarcate at the scene; Earlier do not open wash water valve in the replacement process, the on-site proving metathetical time, stop into water then; After replacing water enters when advancing the salt immersion, soaked 5-10 minute, carry out emptying then, respectively the wash water valve of one-level jar and secondary jar, the vacuum pressure valves of abhiseca are opened simultaneously, emptying time is demarcated at the scene; Especially, one-level is just washed: with the water inlet of one-level jar, emptying twice, flooding time and emptying time are demarcated at the scene, according to the situation at scene, can increase certain soak time between water inlet and emptying, and regeneration effect can be better like this; Secondary is just washed: open the terminal valve of one-level jar, with the water inlet of secondary jar, emptying three times, the time of water inlet emptying is demarcated at the scene, according to the situation at scene, can increase certain soak time between water inlet and emptying, and regeneration effect can be better like this; Changing operation over to prepares: emptying finishes, and closeall vacuum pressure valves is only opened the secondary that the secondary wash water valve carries out standard and just washed process 3-5 minute, changes running status over to after the test water hardness is qualified.

3. a kind of water treating softener device regeneration intermittent type as claimed in claim 1 is just being washed technology, it is characterized in that, the difference of first grade discharging water and the unboiled water chlorine root that enters one-level is less than 50mg/L; Secondary discharge water and the difference of unboiled water chlorine root that enters one-level are less than 25mg/L, and discharge water hardness is less than 0.25mg/L; Advancing the salt weaker concn is 10%; Displacement concentration is 1.5%.