JPS5959286A - Treatment of solid used in treatment of dirty water - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Background Water softeners and deionizers filter particulate matter from feed water. These particles and trees themselves contain naturally occurring substances and organic substances such as lignins, tannins, humic acids, oils, greases, water-soluble or dispersed polymers, etc. It also absorbs
These can be excellent nutrients for bacteria;
Alternatively, they may themselves be direct contaminants. As bacteria multiply, bacterial slime, microorganisms, and their infestations can accumulate.

These factors have a negative impact on the performance of the ion exchange unit (11) before regeneration and during a short renewal period, reducing the fjLf of the resin and degrading the quality of the effluent water. Sometimes. Furthermore, microorganisms and their: iii =! Depending on the use of the water, treated water that contains
May cause health problems.

When used in combination with non-ionic surfactants and biodispersants, it eliminates microorganisms and their contaminants, as well as organic soils, oils and grease soils.
It has been discovered that gold can be removed from ion exchange resins and other water treatment solids.

Tests show that water quality is improved by cleaning with water softeners and deionization and biodispersants. The combination of these nonionic surfactants and biodispersants maintains the resin at maximum service neutrality when treating 1 ton of resin on a continuous and cyclical basis during backwash cycles used in regeneration. It can also be used for.

The combined treatment agents also continually remove organic anions that can significantly contaminate strongly basic anionic resins.

It has also been discovered that the products of these surfactant/biodispersant combinations have improved p1 scales with the addition of Ruru Udon microbicide.

Problem: Water softeners and deionizers, ion exchange resins, can remove various insoluble substances present in feed water that require treatment with these resins. These insoluble materials include insoluble iron salts, inorganic precipitates, silts, semicolloidal lignins, tannins, humates, natural and synthetic polymers, and the like, as well as oils or greases. These ion exchange resins and graded particles are also capable of adsorbing soluble organic substances.

Most of the organic material adsorbed onto the resin ultimately affects the resin's ability to perform ion exchange by reducing the rate of sulfur diffusion in and out of contaminated resin beads. The f/6 of the unit device did not affect the insects txvc.

In addition, organic matter that has been absorbed or passed away from water can be an excellent resource for microorganisms. When these enemy organisms proliferate, ion Microbiological contamination in the exchange HJ equipment occurs.Finger beads already stored with organic matter, bacterial slime and other microorganisms!IF
J's tti;l! 'The proboscis becomes more exposed, and this will further reduce the performance of the ion exchange unit. A short run of regeneration 1']8 and poor effluent quality are usually observed in i1+11. The use of inorganic rejuvenators and shearing agents in combination with salt or force pouring has not been successful in removing these contaminant mixtures.

- When the fNJ dirt, bacteria, micromacro slime and J4F dirt accumulates and settles, the formation of a large mass enveloping a large part of the ion exchange unit is found in the ion exchange unit. These lumps are the light on the floor;! Due to fi4 and groove formation, the effectiveness of the ion exchange units is reduced, which can lead to rapid leakage of ions, ie, a rapid loss of capacity of these resin units.

It is not unusual for field reports of a decrease in usage capacity to 25 to 50 inches of the original capacity.

Microorganisms are present in almost all water treatment resins, and their presence is not limited to specific resin types. It includes water softeners and cation and anion exchange resins used for water deionization. Bacteria are present in household water softeners used in chlorinated water, and on the resins of industrial and commercial water softeners and deionizers used to treat enriched water and DPO water. exist. Even relatively clean-looking resin samples obtained from field samples show bacteria in varying amounts. Additionally, it is desirable to avoid over-axillary growth of bacteria, given that heat-generating scale, i.e., bacterial PVf products (pyrogens), are discharged from these units into the treated feed water. If so, it's obvious.

There is a problem of contamination of two buildings. First, contamination of the surface of the beads or particles results in contamination, where the contaminant formula is absorbed onto the surface of the ion exchange material and a continuous layering of contamination occurs. Second is the contamination of the particles, where the contaminant Jt diffuses into the particles and binds to exchange sites inside the tree flit. While listed: r It is desirable for the operator of the ion exchange unit d to remove contaminants from the resin while watching the breath. An additional incentive to do so is, of course, the increased expense of operating contaminated ion desert units. For example, a unit reduced to 25% of its original operating capacity will require four times as much chemical regeneration, thereby increasing chemical and utilization costs.

A major advance in this field would be achieved if conditions of cleanliness could be maintained that continuously ensured optimal performance of the ion exchange m1IL unit.

Prior Art The following U.S. patents are listed and cited herein as disclosures of information discussing past attempts to solve the problems set forth above: I will add it to you.

U.S. Pat. No. 3,442,798, issued May 6, 1969, transfers organic combustible materials in wastewater to carbonaceous surface adsorbents such as lignin charcoal, bone, powdered coke, powdered coal, and activated Concentration on charcoal, activated carbon, etc. and subsequent oxidation of an aqueous dispersion of adsorbent containing adsorbed combustible rostate is described.

The use of activated carbon in the form of sand and chrysanthemum, and the recovery of activated carbon from water treated for human consumption are fully described.

U.S. Patent No. 3,373,085, March 12, 1968
Published by Japan, describes the recovery of phenol from coking wastewater by adsorption of phenol in the wastewater on coking coal.

U.S. Pat. No. 578,589, issued May 11, 1971, improves the cooling water system by incorporating a nonionic surfactant and an acrylic or methacrylic acid tetramer or bath salt thereof into the water flowing through the cooling water system. from scale, mud, /ruto, striped horns and other dirt,)
It states that 71 is to be removed.

U.S. Patent No. 3,748,285 M, Wiltsey
, + et af.

Published on July 24, 1973, treated ion father Kasukibet with sulfohyde detoxifier, and then treated it with t? It is described that 5-purified l5JI sentinel beads can be obtained.

No. 4,104,707, issued July 25, 1978, and U.S. Patent No. 4,045,244, 19
Published August 30, 1977, describes the production of pseudomorphs on a support in contact with an aqueous system by adding to the aqueous phase chemicals that have hydrogen bonding properties and include water-bathable acrylamide polymers and epoxy compounds. It is described that the proboscis is separated and dispersed.

U.S. Patent No. 3,996,131, December 7, 1976
Japanese Publication describes preventing fouling of reverse osmosis membranes and ultrafiltration membranes by coating them with an adsorbent with or without activated carbon.

U.S. Pat. No. 4,260,504, issued April 7, 1981, describes the prevention of deposit formation on heat exchanger walls, in which ethylene glycol/water is
By mixing with 5% W/W surfactant, the ethylene glycol/water is circulated and the surfactant is mixed with ethylene oxide and 1,2-propylene oxide or monohydric alcohol, water, The compound is an addition product with a triol, and 60 to 90 of the fixed oxides are oxyethylene groups.

SUMMARY OF THE INVENTION The present invention is a novel method for improving, restoring, and maintaining the performance of water treatment solids that are or become contaminated with organic matter, microorganisms, and their excreta. The new method consists of cyclically treating the water treatment solid with effective amounts of a nonionic surfactant and a biodispersant.

The method of the present invention is improved by the use of a blocide in conjunction with a nonionic surfactant and a biodispersant. The biocide used with the interfacial filter/biodispersant can be selected from a group consisting of aliphatic quaternary ammonium salt biocides, bromonitrile biocides, isothiazolines, and biocide biocides. . Aliphatic quaternary ammonium salt biocides are best represented by alkyldimethylbenzylammonium chloride biocide compounds. .

Bromonitrilo IIIt is best exemplified by Nobromonitriloprobionamide. Intiazoline biocide is manufactured by Rohm & )
6L of commercial biocide packed with the company's products DIC-
76-3, May 1977 = self-published,
KATHON 886 can be used manually. K-forming biocides are best exemplified by chemicals such as knitting yarn, filament, hypochlorite or its derivatives, and hypobromite or its derivatives. There are also potential benefits to using these oxidizing biocides. That is, using the oxidizing power of chemicals such as chlorine or sodium hypochlorite, the molecular weight of hydrophobic compounds such as biological degradation products and biological waste products can be reduced by an oxidative mechanism. , which can make these products more hydrophilic or water-dispersible.

The method of the invention can be applied to water treatment solids such as ion exchange resins, carbon adsorption packings, gravel and sand bed filters, ion exchange membranes, reverse osmosis membranes, etc. Each of the separation of solids for water treatment includes organic substances, soluble or insoluble iron, microorganisms and their #! f! The water treatment solids of the present invention become contaminated with natural organic substances derived from the water used to supply the water treatment solids of the present invention. The solids are ion exchange resins used to remove ion pollutants from contaminated feedwater before being used for steam generation and other utility applications.

These ion exchange resins can be selected from dull cation resins, dull anion resins, macroporous cation resins, and macroporous anion resins. These methods improve the performance of these ion exchange trees by two methods or a combination of these methods;
It can be used to recover and maintain.

Additionally, the present invention provides for a recovery agent (revlt) to be present in the backwash cycle for the first 50 cycles of the backwash operation.
An improved method for backwashing ion exchange resins is provided, which consists of carrying out the backwash operation in the presence of an ion exchange resin. The present invention includes carrying out the backwashing process within the use zone of the tree and, if necessary, elsewhere.

That is, the backwash process can be completed during normal resin usage, or can be completed in a separate operation when the resin is not immediately returned to usage mode.

EXAMPLE A method of preserving, restoring, and maintaining the performance of ion exchange resins and other water treatment solids includes the use of a combination of an effective amount of a nonionic surfactant and a biodispersant to remove organic materials, microorganisms, and The feather 1: Resin that has become contaminated with
− Can be done.

This patch method uses about 50 to about 2500 ppm' (2
The active formulation (based on one bed volume) is added to this dirty resin bed (based on one bed volume), preferably at an elevated temperature and at least 24
It consists of adding time. These concentrations are based on twice the volume of the resin bed or ion exchange bed being treated. The preferred range is from 200 to about 1000 ppm active ingredient, and the preferred treatment is from 100 to 180' F.
37.8~82.2℃) τ is approximately 20~24 degrees
Use time sparging, air jets or rapid water circulation for mixing and contacting purposes.

When using this batch system to treat water treatment solids to remove fouling contaminants, it can be added together with and simultaneously with an aliphatic quaternary amine biocide such as an alkyldimethylbenzylammonium salt. This quaternary amine biocide is used in conjunction with surfactants and dispersants to provide 1-50% of the combined surfactant/dispersant formulation.
can be present in amounts of The biocide is preferably
10 to 30 polydispersants are used based on the total mixture of the three biocide/surfactant/biodispersant components. Biocide can be used as an effective biocide with the KATHON 886 p surfactant/dispersant formulation described above.

As previously explained, the addition of oxidizing biocides to the treatment mixture can cause a combination of hydrophobic contaminants and microorganisms. promotes a decrease in the molecular weight of substances. The oxidizing action of these biocides renders hydrophobic contaminants hydrophilic and facilitates their dissolution or dispersion. This action facilitates the removal of these materials during washing and pampering cycles.

Before putting the resin back into use, the resin bed is thoroughly washed with water to remove the last traces of the surfactant, biodispersant, and any combination of biocides and rejuvenating agent. . This is usually completed during the remainder of the backwash cycle and during the regeneration step.

The second method, which is the preferred method, is a continuous cycle treatment using the chemicals described above and below in the following method. Each ion exchange resin goes through a typical cycle. Initially, new fresh resin is fed to the resin bed (secondary), wetted, and regenerated with regeneration chemicals.

These chemicals are rinsed with a water wash solution, followed by ion exchange for the purpose of removing undesirable ionic species from the feed water subjected to treatment, prior to use of the treated water in steam generation or other utility applications. Arranging the floor for use. After a defined period of time, these ion exchange resins lose their ability to remove the required amount of contaminant ionic species. At this point, the volume of the resin bed is expanded by about 50 Jft% with water flowing upward through the resin bed in order to drain the light density dispersed contaminating insoluble effluent from the resin bed. Backwash the resin. This backwash cycle typically covers 1 to 5 gallons (3,000 m3) of resin contained in the resin bed.
8-191) obtained with an upwardly flowing water flow rate of 7 minutes.

After this backwash cycle, the resin bed is allowed to settle, rejuvenation chemicals are added, flushed through the resin bed, and subsequently flushed from the resin bed before the resin bed is returned to service.

A preferred method of the present invention comprises adding the aforementioned cleaning chemical gold, as described more fully below, prior to the addition of the rejuvenating chemical.
In addition to the backwash cycle. A preferred method is to add these treatment chemicals to at least the first 10 volumes, but no more than the first 50 volumes, of the volume used for cleaning the resin. Preferably, these treatment chemicals and cleaning solutions are added during the first 25 to 40 seconds of this backwash cycle. In practice, this means that there is a relatively constant metered flow in the backwash water, at a relatively constant backwash flow rate, during the first 10-50% of the time allotted for backwashing the resin. treatment chemicals with nonionic surfactants and biodispersants, and optionally biocides. The last 50 to 9 ochi l of Gyakukojo! J, no longer add chemical feed and use the remainder of the backwash water to flush process chemicals and contaminant residues from the system.

Add treatment chemicals and flush from the RIJilr floor.

After dehydration, the so-treated wood is then subsequently regenerated using standard regeneration chemicals and techniques.

When processing resin in this preventive maintenance mode, chemical usage can be reduced with respect to the aforementioned patch concentrations. A combination product comprising a nonionic surfactant and a biodispersant, with or without the addition of the aforementioned biocide, is added to the backwash cycle at about 10 to about 200 ppm based on the volume of backwash water. It can be added at a concentration range of .

If this concentration range is maintained in each and every subsequent backwash cycle, the benefits of the present invention will be obtained. from about 5 to about 200 ppm of the aforementioned biocides, preferably from about 10 to about 1 o o ppm of one of these biocides.
The addition of additional species or more can improve the effectiveness of the surfactant/biodispersant treatment in many cases.

Nonionic surfactant The nonionic surfactant of the present invention preferably has a molecular weight of 6 to 14
It has an HLB of HLB stands for current hydrophobic balance and is described in McCutcheon's publication “Cleaning Agents and ?
Detergor+ts and-Emu
lslfiers+ North America
Edition and International
nal Editlon+ 1974Annual
s+ publlshed by McCutcheo
n'5Dlvlslon, A11ured Publl
ghing Corporation.

45 N, 13road St, +Ridgewood
+New Jrsey+USA). These nonionic surfactants are preferably nonionic ethylene oxide adducts of alkylated phenols, nonionic ethylene oxide adducts of fatty alkyl alcohols, nonionic sorbitan esters, and nonionic alkylaryldiethylenes. Selected from phases consisting of glycol ethers. A preferred nonionic surfactant is an ethylene oxide adduct of an alkylated phenol having a lLB of 6 to 14. The most preferred nonionic surfactant is ethoxylated nonylphenol containing about 9 moles of ethylene oxide.

Biodispersant The biodispersant of the present invention preferably has an HLB of 4 to 10.
and ethylene oxide condensation product of adducts of 1000 to 50000 molecular weight total 5000 lyethylene glycol and glopylene oxide, nonionic polyethoxylated linear alcohol, triscyanoethylated coco-shaped diamine, polyoxyethylene sorbicun ester/acid, nonionic Sex N, N
- selected from the group consisting of trimethylstearamide, nonionic amine polyglycol condensates, and nonionic ethoxylated alcohols. Table I shows the types of chemicals that have been shown to have biodispersible properties.

Margin table below 1 Hydrophobic pace (Globi with propylene glycol 6
Nonionic (polyol) condensate of ethylene oxide with 64% ren oxide condensate) Nonionic polyethoxylated linear alcohol
585 Titris cyanoethylcoconoamine
473% aliphatic and t4? Polyoxyethylene rubitan ester (non-ionic) of a blend of 458% phonate and alkylaryl sulfate Cationic ethylene mexito condensation product of Duomesn T* 35.8% non-smelling N,N-trimethylstearin Released amide 341% monoamine (cationic) (cocomonitrile) 313% molecular stitched polyacrylate (molecular weight 1000-10,000)
31.1% non-lotus-amine polyglycol condensate
300% cationic-cocotami=y
25.6% nonionic ethoxylated alcohol 21.2%*DuomeenT
= N-tallow-trimethylenezoamine Change in biomass in Table 1 The slime mass grown in advance and deposited on the surface was immersed in clean circulating water at about 100°C (37.8°C). It was measured by The water contained 10 ppm of each biodispersant indicated and it was recirculated for 1 hour at that temperature. At the end of that period, published in December 2006, and published in U.S. Patent No. 3.35,
76 of du Pont Company described in No. 9,973.
Biofluid evaluation was performed on water collected in a regular container using a 0-luminescence biometer.

This table shows the percentage of biomass aggregates dispersed by treatment with 10 ppm of the indicated dispersant. This data is not shown because other dispersants with 20 orders of magnitude less effectiveness were tested, but dispersants with 20 orders of magnitude less effectiveness were found not to function properly in the present invention in these tests. .

The ratio of surfactant to dispersant in the treatment mixture is from about 0.1:10 to 1/biodispersant formulation.
Can vary between about 10=1, preferably about 1
=2~C:l. A ratio of 1:1 was found to be particularly effective.

When a quaternary amine biocide is used with a surfactant and a dispersant, it can be used in an amount of 1 to 50 ilr, preferably 10 to 30 ilr, based on the total mixture mass. It is possible to exist. These cationic biocides are preferably not used when cleaning cation exchange resins.

Biocides The biocides of the present invention are selected from the group of fatty alkyl Section 4 biocides, nonionic bromonitrilotU ++globionamides, isothiazolines, and oxidizing biocides. 1 Fatty alkyl quaternary salt biocides are exemplified by, and are preferred, alkylpennolammonium chloride brown tetraammonium salt biocides. The non-ionic biocide may preferably be dibromonitriloglobionamide, but this material is not stable under basic to moderate neutrality and its effective use is therefore limited to neutral to mildly acidic conditions. Limited to conditions. Isothiazolines are KATHO
Best described as N 886, primarily Rohm
& Manufactured by Haas. These biocides are listed in the above-cited product bulletin, of which it forms a part.

Oxidizing biocides are chlorine, bromine, hypochlorous acid, hypobromous acid, and alkali metal salts of hypochlorous acid and hypobromous acid. Here, the alkali metal salt means one containing sodium, potassium, ammonium, and rubidium cations.

Describe patching and continuous cycle preventative maintenance methods;
Having described the nonionic surfactants and biodispersants of the present invention and preferred biocides that can be used in combination with the nonionic surfactants and biodispersants of the present invention, organic matter, microorganisms, and The application of these chemicals in methods of improving, restoring, and maintaining the performance of water treatment solids soiled with loincloth is illustrated by the following examples.

In the margins below Example 1, Effect of the present invention on the performance of contaminated cation exchange resins. The effectiveness of the invention was observed in these tests. Two resins had a very large amount of sticky gelatinous mass covering the particles and in the form of green-gray floes, and one resin contained a smaller amount of dirt. The first two resins had a dirty odor, while the third resin had a slight but still unpleasant odor. The materials used to clean these resins were a surfactant, i.e., ethoxylated nonylphenol (9 moles), and a biodispersant, i.e., I-lyoxypropylene mole. lyoxyethylene condensate (cloud point 32° C.), and a quaternary amine, namely alkyldimethylpene zolammonium chloride. In part, quaternary amines can act as surfactant stabilizers.

In order to determine the effectiveness of the method of the present invention in removing organic matter, bacteria, and bacterial contaminants from resins, the chemical properties and reaction waiting times selected were greater than actually needed.

Test A1, Strong Acid Cation Resin This resin contained a substantial amount of large and medium sized greenish-gray flocs and the beads were fairly uniformly coated with a gelatinous type mass that was slime-like in texture.

Test conditions: 300m7! 1 inch of eyelid resin (2,54 cr++
) of Lucite tube l=slowly added to minimize water during addition of each sample portion. This ensured that the slime-like flocs were evenly mixed throughout the column of resin. The total floor height was 22.5 inches (57,2's). The resin was then allowed to stand for 4 days. After this time, the resin was lifted by backwashing. The solid cylindrical mass pistoned upward and only about 30-40 inches of total resin beads were separated from the solid mass. After 15 minutes, attempts to backwash the resin were discontinued. The water removed by backwashing was so me. This water is Orion EagIcult Dip 5tic.
ks).

The total number of bacterial orders was 106~lQ'7fnl.

Test water total hardness 30! 9pg (Gray Cold Keronlu I (0,5
1 Vl') of test water was added to 62.6 g of anhydrous CaC42.
, 70, 2y of MgSO4.7II20, and 28.
Prepared by adding 35g of Na)ICO3 to 50 gallons (1891) of deionized water. Then the final drainage, total hardness 526 ppm, 2/3 calcium to 1/3 magnesium ratio, and 150 ppm N
This test water containing aHCO3 was placed in a unit device at a depth of 8 cm.
Shimin, i.e. 2gp Soil Feet Resin (0,76
97m3・m), hardness 19yg at i&- flow velocity
It was allowed to pass until a leakage of (0,0179/l) was obtained.

Test 1 - Backwashing of A1 Resin Only then Opening with 6 lbs (2,27 kg) of NaC 4' cubic feet (0,028 m'') or 270 m
Regenerated in an amount equal to tD10 salt solution/300ml resin. Tree j11 was then washed with one bed volume of excess water at a rate equal to the regenerant flow. At this point, hard water was passed through at 80 mV min.

Hardness leakage and pressure drop data are shown in Table 1. The average pressure drop across the resin unit was 4.5 pal.

Test 1-B A flow rate that drains the water above the resin used in Test 1-A to bed level and barely maintains 225 inches (57,2 cm) in a 55 inch (14°,) long tube. Then, compressed air was used to inject air for about 3 minutes. The resin was then backwashed with deionized water at a rate to obtain a "normal" expansion of the resin of 50% until the effluent was free of residue. This required approximately 35 minutes of backwashing. During this time, a significant amount of fluffy brown and green material washed out. The particles were about 0.5 to 2 cubes in size. The volume backwashed was approximately 50ml. The particles felt very sticky. Microscopic examination showed mainly translucent particles.

The test water was then passed through the unit as in Test 1-A.

The results are shown in Table 1. The average pressure drop across the unit was 1.5 pal (105 g/crn2).

Test 1-01 Surfactant, Biodispersant Treated Trees The resins used in Tests 1-A and 1-B were backwashed for 10 minutes and then treated with 10007+19 ethoxylated nonylphenol (9 moles), 1000m9 polyoxyfluoride, and 0ropylene polyoxyethylene condensate (cloudy point 32
11 of a mixture of 500 FIG.
-54.4°C) for 1 hour. The solution was reheated and passed again for 1 hour. The final portion of this solution was left in the resin unit for a period of 48 hours. The resin was then backwashed for 45 minutes, ie, until the backwash effluent became clear. The residue removed during this time was particles of very small size and light enough to require approximately 2 hours to settle into the collection vessel. Microscopic examination of these particles, which were pale yellow-brown in color, revealed translucent gelatinous particles of various shapes and thicknesses. The (NE) was then regenerated and cleaned as described in Tests 1-A and 1-B. No pressure drop could be detected with the pressure needle used.

The results for leakage and capacity are shown in FIG.

As can be seen in the curves of Figure 1, by treatment with surfactants, biodispersants and biocides,
Significant improvements in leakage capacity and hardness were obtained.

When the resin was backwashed and dried, it was found that the resin was loose and no lumps were present. The beads were well separated. The backwash effluent has a moderate f+' (approximately 3
ml') showing small yellow-brown flocs. Some fluid (1 ml) remained on top of the resin along with some fibers that originally came with this customer's sample.

A clear sample of this sample showed zero guctilia when treated with the Orion Ethycult Dip 0 Stick.

Test Thickness 2, Water Softener Resin This resin is always contaminated with loose, large flocs of water, and the resin beads are coated with a gelatinous-looking coating that is slime-like to the touch! It had been overturned. The coating was greenish-gray.

Test conditions A volume of 300 ml of this resin and loose contaminants was
inch (2.54 crn) tube and a minimum amount of water was added between each resin portion addition. As a result, the slime-like flocs were uniformly mixed with the resin. The resin was left in the unit for 4 days. After this time, backwashing of the resin was attempted. The resin was moved upwards through the tube in a single piece, and was not tampered with by alternately starting and stopping the flow of water.

Test 2-A1 Air Shot and Backwash The water was drained to floor level and the floor was air blasted for approximately 5 minutes while the thin plastic tube used to introduce the air was moved up and down repeatedly. The resin was then backwashed for 45 minutes until the solution was clear. The first 500 m/s of backwash water was measured with the Orion Ecicalt dip stick method and showed a total bacterial count of 107.

The total amount of backwashed solids was approximately 35ml.

This material settled to approximately 25 ml in two weeks. The resin volume decreased by approximately 5 ml to a total of 325 ml. Microscopic examination of the green-gray flocs removed by backwashing revealed translucent gelatinous particles that were non-uniform in shape and size. The resin was regenerated with 298 m/104 NaCt or 6 lbs (z, 7 ok) of NaC4/ft3 (0,028 m'') of resin. The resin was then rinsed with water and the test water was allowed to dry as described in the experiment in Test 1. passed.

Capacity and leakage are shown in Figure 2.

The average pressure drop in a unit unit is 0.5 psl (3
5 and 2) were overseas.

The resin used in Test 2-A was mixed with 50 (1 & ethoxylated nonylphenol (9 moles EO), 500 ml
500 m/! of a solution containing a polyoxypropylene polyoxyethylene condensate (cloud point 32°C) of li', a hexagram and 250 m9 of alkyldimethylbenzylammonium chloride (as a 50% solution of a quaternary amine). The solution was repeatedly treated at 110-130° C. (43.3-54.4° C.) for 3 hours by reheating the solution and flowing it through the resin. One bed volume of this solution was The resin was then backwashed for 45 minutes until the effluent was clear and expanded to 50 inches.

Approximately 20-25 ml of pale brown material was removed in the form of fine flocs. The flocs were less than one pharynx in diameter.

The resin supernatant showed zero .9 cutia when tested with an Orion Ethyscult Dip Stick.

The resin was then regenerated as in Test 2-A. The used regenerant was collected and exhibited a light yellow to yellowish brown color. Foaming of the regenerant effluent was also observed. Next, apply 330mA to the resin! of deionized water at a flow rate of regenerant, followed by a rapid rinse with test water. The test water was then applied to the resin under the same conditions as used in Test 2-A (29prrV
/ft”) (0.76 gΔ-·m).

Capacity and leakage data are shown in FIG.

The pressure drop could not be measured with a manometer.

The foaming of the effluent was determined by 10.2 bed volumes of test water, i.e.
Until 3.51 J was allowed to pass through the resin.

At this point, there was also no odor of any kind noticed. In this test, the resin was backwashed by alternately lifting and settling the resin. The resin still showed some lumpiness, but it was much less so. However, while this test achieved significant cleaning, it did not remove all of the contaminants.

This resin is apparently very contaminated and requires more vigorous cleaning or repeated cleaning. Microscopic examination showed a stuffiness, difference in the appearance of the resin.

That is, the cleaning removed most of the original contaminants.

This is also demonstrated by the improvement in resin width θ and hardness leakage, as shown in FIG.

Test A3, Water Softener Resin This resin was only slightly contaminated with some coating of loose, light brown flocs and beads.

Test Conditions 250 ml of resin and a small amount of flocculant contaminants were placed in a 1 inch (2,54 c1n) tube and a 20.5 inch (
A floor height of 52,1 cm) was obtained. This resin was left in the unit for 4 days. The resin was then lifted off by a simple backwash. Some small lumps were observed that were not broken up as the resin settled through the water to the bottom of the tube.

The water was drained to bed level and the resin was air jetted for 5 minutes by simultaneously moving a thin air tube up and down through the resin bed. The resin was then backwashed for 35 minutes, ie, until the effluent was clear.

The mound of very small fluffy material was about 7 ml when freshly collected. This amount settled to 4-5 ml after one week. The first 500 ml of backwashing should be 1
Total bacterial counts from 05 to 1o6 are shown.

The resin was regenerated with 225 ml of 10% NaCl solution, i.e. 6 lbs (2,7 okp) of NaCt/ft3 (0,028 m") of resin. The resin was then regenerated as the same as used in all previous experiments. Washed with test water under conditions and exhausted.

The obtained kettle θ and leakage are shown in FIG.

There was not enough pressure drop to measure with the pressure gauge used.

The resin used in Test 3-A was composed of 5 oom2 ethoxylated nonylphenol (9 mol), 5 oomyz lyoxypropylene polyoxyethylene sulfate (cloud point 32°C), L and 250 m9 alkylzmethylbenzyl ammonium, chloride 110-13 in 500 ml of a solution containing
The solution was repeatedly reheated for 3 hours at 0"F (43.3-54.4C) and processed by flowing downward through the resin. As in Test 2-C,
The bed volume of the solution was then backwashed until the backwash solution was clear, which took about 45 minutes. The total amount of yellow-brown cohesive fluff removed was approximately 3 ml.

Microscopic examination showed translucent gelatin particles of small particle size and of various shapes and thicknesses. The resin supernatant was free of bacteria as determined by the Orion Ecicalt Dip Steck test. The resin was then regenerated, washed, and exhausted with test water under the same conditions as all previous tests. The used regenerant exhibited a pale yellow color.

The resulting capacity and leakage are shown in diagram f43.

Foaming of the effluent ceased at approximately 2.51° or the equivalent of 11 bed volumes of test water passing through.

The air-injected and backwashed resin o*=t approached the effective bE0 for this particular resin sample. That is, about 23
．． 071! The test water was softened by 225 ml of resin. Therefore, chemical treatment with surfactants, biodispersants, and quaternary amines provided little improvement in θ (approximately 11 additional test waters were treated). However, the improvement in water quality was significant. On average,
From a total hardness of 6 ppm obtained using fresh resin, to 4 ppm using chemically treated resin.
The decrease to pm can be seen in FIG. The resin was fairly new (10 months old) and had only relatively small amounts of bacteria and various organic debris in the form of loose material coating the resin and in the supernatant. In view of this, the results obtained with this resin are of particular interest.

In the test described below in Margin Test 4, a commercial deionization system with a history of rapid t6 loss of used kn was treated according to the present invention. Reducing the amount of resin required frequent replacement of the resin, which added major operating costs. The cationic resin had to be replaced every three years, the weak base resin every 11 months, and the strong base resin every 18 months. The reduced resin life was due to rapid fouling with natural organic matter, bacteria, algae, and synthetic polymers. The adverse effects of surface contaminants on carbon and weak base resin units were particularly evident.

The purpose of the test was to determine whether the combination of biodispersant and nonionic surfactant could remove enough fouling material to restore the system to useful strength.

In this test, water from a collected swamp with Na0ct as the oxidizer, stabilizer, and inorganic oxidizing biocide was sent to a water treatment plant where 1-5 ppm of synthetic-rimer flocculant was added.

Add water to the filtration unit to remove particulate matter, then
It passes through a deionizing agent system consisting of two deionizing trains, each train containing 400 cubic feet (11,3 m') of cationic resin, 225 cubic feet (6,3 m3) of weakly basic resin, and 150 cubic feet (6,3 m') of weakly basic resin. 4.2 m'') of strong base resin. Replacement of two resins in four trains was planned for reduced capacity. These two trains were processed according to the invention in the following manner.

Dosage: 1) 2500 ppm mixture of surfactant and biodispersant. The surfactant was nonionic liquid nonylphenoxy polyethoxyethanol with an HLB of 13.3. Biodispersant is 7
．． It was a liquid nonionic block co-remer of zoropyrene oxide and ethylene oxide with a TILn of 0.

2) 250 ppm C62 added as bleach;
i.e. 2.5 gallons (9.5 l) of 18% Na0
C1/Unit device.

Air was passed through the unit through a backwash line every hour for 4 hours, and then left undisturbed overnight. No foaming occurred.

This is probably a Q pot (G) between 7N and δ.

This is also due to abnormally large granular material. The next morning, the unit was backwashed at 300 gallons (1°1 m3) for 7 minutes for 2 hours. At this point the effluent was clear.

Foaming was no longer observed after 30 hours. Small particulate matter still came out in large quantities. The surface coating of 01 fat particles is
Alclan Blue dye was received to the extent that about 1/4 of most particles were coated with dyed material. This indicated the presence of a polysaccharide, ie, biological 4''&ffJI.

Hereinafter J; Self 2, Train boiled 1 weak salt Kyogai Shin X Hiro C Kunimata) Administration vomiting: 1
) 2500 ppm of said mixture, 2 bed volumes, i.e. 4
Gallons (151)/unit device.

2) 250 ppm C42 added as bleach, or 1.4 gallons (5,31) of 18% NaCL/
Unit device.

Air was again passed through the unit every hour for 4 hours. Moderate foaming occurred and air passage was stopped when foaming reached the top of the unit.

The unit was left undisturbed overnight and then backwashed for 1 hour and 45 minutes until no more particles or foaming was observed in the effluent. The backwash water was much cleaner than the cation unit. That is, fewer particles were removed.

This unit did not contain any particles, and foamed during air passage and backwashing.

The addition of chemical quenchers to wastewater has been very effective in preventing foaming in sewer pipes.

4. All resin unit equipment train A1 of tray = / flat 2
The conditions described for were used to treat train A2, and the same amounts of chemicals were used.

However, the detergent reaction time was maintained at 4 hours. The cation unit was more fouled than that of train A1. Thus, a 2.5 hour backwash rinse was required versus 2 hours for the cation unit in train A1.

Example 1 20% of a surfactant and dispersant mixture used in a test on preventive maintenance treatment of deionizer train A1
ppm preventive maintenance was provided in the backwash water for approximately the first 10 minutes of each backwash cycle of the cation, weak base, and strong base units. Product appears to be flushed from the unit during the remaining backwash run, ie, an additional 20 minutes, and normal regeneration and regenerant rinses.

The "final" rinse water, taken during the last 2 minutes of the rinse, exhibited a surface tension equal to the raw effluent water.

After several backwash cycles using this program of preventive maintenance, the defouling treatment restored the trains to their maximum useful condition. The operating length of train A1 is 485,
000 gallons (1840m”) to 1,070,000
gallon (4060m3) and train A2
About 870,000 (3300) rt3) to 1
,050,000 gallons (4000 m3).

Analysis of the resin showed only 81% of the original resin remaining. That is, all of the effective 1p of the used resin was recovered.

The data collected after 5 months of operation indicates that
did. That is, the preventive maintenance treatment of train A1 results in a nearly slight reduction in running length of 12-15 inches, while train plane 2 reduces the running length, i.e., the relative amount of water treated;
showed a rapid decrease of 45 inches.

This study reveals that preventive maintenance grograms are the most effective. The deionizing agent Trane 1 is
It was first cleaned and treated with a 1:1 mixture of surfactant and biodispersant and chlorine. It is then treated continuously and cyclically with the same mixture of nonionic surfactants and biodispersants to achieve optimal usage capacity and extremely low leakage, typical of clean deionized resins. Characteristics were obtained. In contrast, the deionizing agent Trane 2, which effectively patch cleaned Ib but was not further treated in a cyclical prevention and maintenance program, showed a decrease in its usage characteristics.

Success in removing surface contaminants was probably due, in part, to the combination of surfactants, dispersants, and oxidative biocides. Still, chlorine interacts with the contaminant polymer song at the branching site, and 7J? The remer chains can be broken, resulting in the formation of lower molecular weight M- and more water-soluble polymer residues. In addition to the use of bleach, alkalinity may be beneficial in converting the cleaved chilimer to its more water-soluble sodium salt form.

Example 2 2. Improvement of the Performance of Contaminated Strong Base Anion Exchange Resins The following experiments were conducted to investigate whether the performance properties of soiled anionic resins could be improved by use of: Ultimately, promoting maintenance of anionic resins at peak usage conditions means that the resins become fouled, the operating costs of the unit equipment are very high and the quality of the water produced is very poor, and the plant Instead of waiting until managers faced serious problems, we hoped to provide sufficient evidence of the usefulness of such ingredients in preventing organic buildup.

The recycled resin was a sample from a customer we had recently received. Customers experienced both poor water quality and high PH using this resin. This sample contained a moderate amount of yellow-brown floc-like particles of various shapes and sizes, and the resin itself was coated with a moderate amount of slime-like material.

The sample had a dirty odor, which is not characteristic of a new anion exchange resin. The water surrounding the resin particles had a total bacterial count of approximately 107, as measured by the Orion Ethycult test, indicating that the resin environment was microbiologically dirty and contaminated.

The sample exhibited only 79% of the original total capacity and only 67% of the original salt separation capacity.

It was contaminated with 10 inches of broken beads, 12 g of Fe and 26 g of Si/ft3 (0,028 m'') of resin, and was also fouled with a large amount of heavily colored organic material.

The leakage of 50 μM was quenched with water containing 50 μM of hydrochloric acid.

One sample (column A) showed an effluent with a conductivity of 10-21 micromho. The other sample (column B
) produced water with a conductivity of about 25-30 micromho, but at the end of the cycle it was observed that this sample contained slightly more residue than the first sample.

B, Capacity and Leakage After Chemical Treatment Column A contains 10 lbs (4,sskg) of NaCl and 1 lbs (0,4sskg) of NaCl supplied as a solution of 10 g.
55 kg) (il) NaOH/cubic foot (0,
028 m3) of resin was treated for 3 hours at 140° C. (60° C.), which is normally recommended. The actual amount used was 60m+! ! of solution/4 Q ml of resin.

Column B contains 50 to ethoxylated nonylphenols (
9 mole), 50rn9? In a mixture of 6 Q ml of the above solution diluted to a total of 110 ml with an aqueous solution of polyoxypropylene polyoxyethylene condensate, cloud point 32° C., and 25 μl of alkyldimethylbenzyl ammonium chloride-1 quaternary amine biocide, Processed. The treatment time was 3 hours at 140° C. (60° C.).

Both columns were left overnight without heating, with each treatment solution well placed around the resin beads. The resin sample was then rinsed at 2 Nhr12, as in A.
It was then washed with water, regenerated, sanded with pampas grass, and handled with care. The accumulated process effluent was both hazy red-brown in color.

However, the quality of the water obtained was very different. Resins treated with surfactants, biodispersants, and biocides mixed with salts and alkalis produce water with approximately 5 to 10 micromhos less conductivity than columns treated with surfactants, etc. However, in contrast, the resin treated without the three additives produced a water quality of about 15-20 micromhos throughout most of the test, and about 8 micromhos for about 5 weeks of the run. Given the quality of the water.

The first third of the water treated with both resins had a pale yellow-brown color, with a darker color observed with the surfactant-treated resin. This substantiated the assessment that strong base resins that accumulate organic matter are likely never to be completely cleaned due to the low degree of transfer of large molecular weight organic matter.

You can't expect things to completely clear up in time. However, the positive improvements observed here justify the use of surfactants and biodispersants to facilitate the removal of organic matter from anionic resins that are otherwise difficult to remove from the resin. provide evidence of Additionally, these results further demonstrate that the components used are excellent candidates for preventing organic buildup on the anion exchange resin.

A total of four types of products were prepared. The product is a biodispersant (U.S. Pat. No. 2,674,619, incorporated herein by reference;
9) and a surfactant (ethoxylated nonylphenol [9 moles of EO
)) with or without a quaternary amine (alkali dimethylbenzylammonium chloride) biocide.

All products were formulated with a 50% solution in water.

The individual components were blended without difficulty at 60-65°C (below 140-150°C). At lower temperatures, mixing is somewhat difficult and the solution viscosity during mixing is such that a considerable amount of time is required to obtain a uniformly mixed solution. The preferred mixing order is water, surfactant, then dispersant, and finally quaternary amine biocide.

Dispersant B is of the same type as Dispersant A, except that it has a cloud point (32° C.) that is 8° higher than Dispersant A.

All products identified are colorless, transparent υ, and somewhat viscous solutions.

These CX No. 1 products were heated under 120°C (48.9°C).
, below 75 (23,9℃), 32C (0℃) and O”F
Stability tests were carried out at (-17.8°C). After 2 weeks, no changes were observed except that the product was frozen at O″F (-17,8°C). Upon thawing, it became completely frozen -
Recovery of melting was observed.

The following surfactants were successfully used in this method: Makon 10 - non-ionic, liquid alkylphenoxy polyoxyethylene ethanol.

5urfonlc N-85・=Nonionic, liquid nonylphenoxy polyethoxyethanol.

EXAMPLE 4 The effectiveness of a combination of nonionic surfactants and biodispersants of the present invention in maintaining the capacity of ion exchange resins was tested at a plant in the southern United States in 61 cationic deionization units and two The seed deionization unit was contaminated with water containing organic matter from natural sources and possibly also from upstream of a sewage treatment plant. The cation exchange resin showed a surface coating with unrevealed organic matter, bacterial slime and detected microorganisms.

The anion exchange resin was heavily contaminated with dark brown material believed to be lignins and tannins.

Also, a substance of the nature of grease was detected on the anion exchange resin, causing agglomerations of resin particles. All three units were treated with a combination of the preferred nonionic surfactants and biodispersants of the present invention and sodium hypochlorite (used both as an oxidizing agent and a biocide).

The water passing through the deionization unit was rated at 85 below (29
,4°C) to below about 95°C (35,0°C). The water contained substantial amounts of natural "organics" and effluents from upstream of the sewage treatment gland.

Although mass spectrometry was not performed to identify each of the organic contaminants, it can be reasonably assumed that these contaminants are
6 tons of tannins, lignins, fatty acids, microorganisms, and spiders! It contained things.

The cation exchange unit was fed with P@rmutit Q B and the total exchange negative Lh was tested to be equal to 1.55 meq/ml, about 77 h of the original ion exchange resin stage. DOWI to anion exchange unit 1
IIX 11 was supplied. DOWI! X 11 is 0.4
Salt-separated bonito p equal to 4 meq/ml or about 0.45 meq/ml compared to the absence of detectable weak basic groups on the new fresh resin, with approximately 34% of the original diagnostic power. /d
It was tested to have a weakly basic group of 0.8° and had a total ion exchange 6 (ρ) of 0.8°9 meq/ml, corresponding to about 68% of the original power.

Anion exchange resin unit ≠ 2, Rohm & Ha
IRA-402 from AS was supplied.
was tested to have a salt separation capacity of 0.38 meq/me, equal to about 29% of the original capacity. The weak base capacity of this resin is 0.71 meq/m7! However, weak base capacity is not detectable on fresh new resins. The total exchange p of this anion resin is 1
．． 0.9 milliequivalents, which was 84 pounds of the original fresh new resin capacity.

Cation exchange resin Alcian Blue Gui (Ale)
Treatment with ian Blu@Dye) showed the presence of polysaccharides, such as bacterial slime, wood sugars, and slime-forming patcheria.

As previously mentioned, the anionic resin was dark colored, formed small clumps, and had a white film that dissolved only on prolonged contact with thermodynamic alkali. Again, although no analysis was performed, this thermodynamic alkaline dissolution would be typical of silicate deposits.

Silicate deposits tend to form when soluble silicates are passed over acidic resins, such as resins having a high percentage of weakly basic groups.

Each of the three unit devices was initially treated with a patch treatment solution containing 2500 ppm of a combination product containing a preferred nonionic surfactant and biodispersant of the present invention.
Processed. Additionally, 250 ppm chlorine was added (as sodium hypochlorite) based on 2 bed volumes of water. Treatment of the anionic resin unit also included the addition of 1100 pp of quaternary amine biocide.

Open the unit and pour water approximately 6 inches (15,
2z) Drained at t and added the chemicals listed above. The water temperature should be approximately 85 below (2
9.4°C) to below 90°C (32.2°C). The unit was blasted with air immediately and then every hour for 4 hours. Foaming inside the unit was excessive and air injection was stopped when air bubbles appeared at the top of each resin bed unit.

Each unit was then allowed to backwash and overflow until the effluent contained particulate matter and little or no foaming was observed. This required approximately 45 minutes for the cation resin bed and approximately 75 minutes for each anion unit. Then, each of all three types of unit devices was regenerated in a conventional manner.

Immediately after patch cleaning of cation unit S1 and anion unit +1, preventive maintenance treatment was initiated. Anion unit unit S2 is left without any further processing so that the performance of this unit and anion unit +1 can be compared, thereby comparing two identical units and performing periodic maintenance processing. It is now possible to observe the effectiveness of patch cleaning versus the performance of a unit device that has only been subjected to patch cleaning treatment.

The preventive maintenance program consists of 80 pp of a 25% aqueous solution of a nonionic surfactant and biodispersant combination product.
m for the first 10 minutes of each backwash run, followed by a 20 minute backwash run with standard clean water, followed by regular regeneration. The data obtained from these outlined field tests are listed in Table H.

A careful look at the data in the margin table below shows the effectiveness of cleaning and the effectiveness of a preventive maintenance program.

It was necessary to monitor the endpoints of these units, ie silica leakage for the anionic units and reduction in free inorganic acidity for the cationic units.

Typically, the plant operated its deionization equipment with automatic water meter shutoffs. When a predetermined number of gallons of water have passed through the unit, the unit is automatically backwashed, regenerated, rinsed, and then flushed with the water that requires this treatment (''--exposed to the anion unit. In some cases, normal operation significantly exceeded the leakage of silica. According to the tests of the present invention, the anion unit did not lose any further capacity, but the cleaning in the method of the present invention There was no total increase.This is so much 1! Mi〈
That's not the point. This is because the data on the original resins showed that these resins had deteriorated significantly to the point where the continuation of this test was problematic.

However, the preventive maintenance program did demonstrate that the extent of soiling was reduced beyond that achieved using the patch cleaning method.

Moreover, this monovalent result indicates that the surface film that polluted the cationic resin was removed and that this resin (ctw't4
) throughput increased from 240,000 gallons (910 m3)/operation to 270,000 gallons (1020 m3)/operation. Continued application of preventive maintenance administrations of the present invention facilitates maintenance of this expanded throughput increase.

The ionically contaminated anion resin initially showed no change in throughput. However, even with these relatively short duration tests, these ionically fouled anionic resins did not further reduce serviceability and properties.

The entire preventive maintenance program lasted approximately 4 months. Over this period, the run length for heavily fouled, strongly based anionic resins was approximately 170,000 (6
40m3) to 227,000 gallons (9335m”)
was significantly improved and maintained at this level for the last 4 months of the 14-month period. The water quality in the maxim 1 deionizer train was also significantly improved.

Also, the observation that the chemical capacity, i.e., the ability to separate salts, did not decrease further, but rather increased to a small extent,
Worth paying attention to. Essentially, the tests presented in Section 4 demonstrate that the application of a program of preventive maintenance increases the life of the resin by at least 19 months and irreversibly fouls anionic resin beads. It was shown that the dirt was effectively removed. Interestingly, the Kongo replacement capacity of resins treated according to the present invention in a preventive maintenance program remained unchanged over the entire period of this test. As shown by this, the present invention inhibits and prevents further degradation of the resins to the alloy and inhibits and prevents additional loss of exchange capacity for these resins.

In summary, this field experimental comparison, particularly that of the two anion units, shows that the deionizer train is approximately 2
It showed a gradual reduction in capacity over a period of two or three years. This gradual decrease in efficacy is due to the deterioration of the resins and the natural organic contaminants and microorganisms and their support derived from upstream discharges of sewage treatment plants into the natural waters and waters supplied to these deionized fittings. This was attributed to excessive accumulation of complaints. Try this spot! The application of both patch cleaning using the chemicals of the present invention and preventive maintenance using the same chemicals to the anion and cation units that make up the train of deionization equipment in this production plan. I compared it. Although the patch wash or cleansing procedure showed essentially no measurable efficacy, a total of 31 experimental periods did in fact show a gradual increase.

After patch processing, connect the feed pump to the anion unit backwash water supply line 12 and during the first third of the total 30 minute backwash cycle performed before each regeneration. The chemicals of the invention were fed with backwash water 1:S. The chemical feed was 80 pprn based on the volume of zero total backwash water treated.

No other chemical treatments or services were applied to these units.

At the time the preventive maintenance program was initiated, the total capacity of the backwash system was 150,000 gallons (570 m3). The length of Jin's driving is the following 14
Over a period of 227,000 gallons (863 m3)
) slowly and gradually improved in total length.

It is also worth noting that the resin in this anion train had only 29% of its original salt separation capacity and 84% of its original total capacity at the beginning of this experiment. When re-tested after 13 months, the resin was found to have 32% of its original salt separation capacity, which represents an approximately 10% increase in total chemically effective exchange capacity. showed that. This indicates that continued preventative maintenance use of the chemicals of the present invention reduces further chemical degradation of these anionic resins. The chemicals used throughout this study were ethoxylated nonylphenol containing 9 moles of ethylene oxide, condensation of ethylene oxide with tetrapyrene oxide on boria'opyrene glycol, and a molecular weight of approximately 1500-50'OO. The entire product with HLB of 4-10 was a 1,1 blend with a biodispersant synthesized by producing.

Example 5 An oil refinery on the Gulf Coast has seven deionization trains and these trains have a history of ion exchange losses and extensive rinsing and regeneration. required. Fouling of the resin due to the accumulation of various types of natural and synthetic organic substances as well as microorganisms and microbial NH products was assumed to be the main cause of this poor usage history. A zero-patch cleaning process in which two trains of cationic and weak base anionic resins in this deionized system were batch cleaned using the chemicals of the present invention and then subjected to a preventive maintenance treatment in only one train Slightly improved train performance. Deionizer trains that did not receive any further preventive maintenance treatments remained at poor performance levels. Deionization unit train trains that underwent preventive maintenance treatment using the chemicals of the present invention showed consistent improvements across the board. This on-site testing at the Gull 7 Coast refinery showed that the deionization unit A complete comparison of the results obtained for TRACENA 1 versus deionization device 2 was constructed. Train≠1 was maintained under the refinery's standard practices for the extended period of this study.

Train 2 of the deionizer is the first lO of the backwash cycle but fails until less than 50% of the time.
A preventative maintenance program requiring the addition of JJ chemicals was followed by standard regeneration and rinsing techniques. Chemicals were added for approximately 9 months in each backwash.

Both deionizer trains were initially backwashed and cleaned using the full patch process described above and the chemistry of the present invention. Prior to this cleaning, the entire deionizer d system had been pre-cleaned of resin with alkali and rejuvenation chemicals by plant personnel approximately 2-3 months prior to commencing this on-site testing. was.

As a result of patch cleaning, which strictly followed this pre-cleaning of the resin by plant personnel, only slight improvements were observed in resin fA'ph, reclamation chemicals and water usage, as well as in water quality. Ta. However, this slight improvement was observed in the trains treated with the present invention.

However, the entire train undergoing the preventive maintenance, recovery, and restoration process of the present invention slowly and continually improves the overall performance of both cationic and anionic resins in this train of deionization equipment, and eventually these The resin recovered almost all of its initial capacity to treat water containing anionic species.

The plant has to date undergone a preventive maintenance recovery program. The results show that both the cationic and anionic resins contained in the train of this deionizer maintain maximum resin capacity, saline thermal capacity, and also that further resin degradation is inhibited by this process. Certify that the specific field test did not occur for at least 7 months. Continuous improvements in the operating life of this deionization train have been recorded at this Gulf Coast refinery. Tables ■, ■, ■, ■ and Section 5.6.7
．． Figures 8.9.1O111 and 12 show the results obtained from monitoring the resins during a preventive maintenance program used to restore, improve, and maintain the performance of these water treatment replacement resins. show.

Example 6: Finally, a test was conducted at a chemical plant in the Midwest of the United States. This plant uses standard ion exchange technology to
Two low-pressure boiler-based water softeners were in operation. The length of operation of this plant is approximately 51,000 gallons (1
93m''), but the resin capacity was 80cm higher than the initial capacity and 90cm lower than the initial capacity.

This field test shows that the preventive maintenance program itself restores, improves, and maintains the performance of these water treatment solids and ion exchange resins contaminated with iron, pollutants, microorganisms, and microbial s. The purpose was to prove that it could be done.

Operating procedures were not changed in any way during testing of this plant. This resin patch cleaning process has not been completed.
Simply started a preventive maintenance program. The preventive maintenance program consisted of cyclically treating the ion exchange resin within the water softening unit at this plant with effective amounts of the nonionic surfactant and biodispersant of the present invention.

The selected nonionic surfactant is
Ethylene oxide additives of alkylated phenols with IILB i of 3 to 14 were present. These range from ethylene oxide to 0Jiii. This biodispersant has a molecular seal of 1500-3000 and an IIL of 7-8.
It had B.

At this water softening level, the resin bed contains an anionic fat suppressor contained in the water, a real ionic surfactant in a 1:1 'M+'rrr ratio, and a biological component. 5ri 20pp
Processed by adding m. Perform the same number on the first third of the backwash cycle, then the second two-thirds of the backwash cycle: Rinse the bed, followed by standard regeneration techniques. did. Kachimen (
The pj fat was backwashed using 20 ppm of the above formulation plus an effective quaternary ammonium salt biocidal compound. Also, a cleaning solution containing a biocide and a nonionic surfactant and a biodispersant is added during the first third of the backwash cycle and then at the end of the backwash cycle. During the two-thirds period, a rinse of cleaning chemicals '+5V 51 was performed, followed by a standard regeneration chemical a3(!t?・Additional and rinsing techniques).

The results show that the total rotation length was 2 weeks;
) to nearly 69,00.0 gallons (260 m”). After the first month, the length of operation was approximately 69,000 gallons (260 m”).
Gallon (260 m”), and for the convenience of the operator of this chemical plant equipment, this system was converted into an automatic system with a constant 63,000 m.
(238 m”) operating length.
) was operated effectively and continuously for approximately 6 months, and showed no loss of capacity or iron separation capacity after this RL! As field trials have shown, preventive maintenance programs alone can be used effectively without requiring extensive patch cleaning procedures. Such a program would prevent deionization unit shutdowns, thereby reducing water generation downtime and chemical treatment plant outages.
It is possible to eliminate the time required to hold the bamboo for 11m.

'I%IA Example 7 If a system is started up with a freshly supplied ion exchange resin, and the system is treated in the manner described above in a preventive maintenance program using the chemicals of this invention. With the advantages of the present invention, it is anticipated that the system will be able to maintain optimum resin strength, optimum salt separation capacity and optimum gallon run length over a greatly improved period of time. Such a system can save significant amounts of money in water usage, reclamation chemical usage, downtime, resin conversion costs, and labor costs. Probably.

Example 8 A domestic softening equipment was heavily contaminated with accumulated residue, organic contaminants, microbial growth and its Ph>i products.

This household softener was not backwashed prior to use, but instead was subjected to TNN regeneration from use, then to a rinse cycle, and then used again.

A mixture of Example 1 was added side-by-side to the concentrated NaCL brine used to regenerate the water softening unit. The concentration was about 2000 ppm, and the chemical a of Example 1
A trace regeneration was performed using a brine containing the formulation, followed by a regular rinse cycle to remove excess brine and residual chemicals. Significant amounts of accumulated organic, inorganic and biological residues are used in this domestic water softener (removed from roux fat, non-ionic surfactants, non-ionic bioparticles, and aliphatic 10-200 ppm of formulations containing tetraamine salt biocide
When the treatment was continued between each cycle and the rinse cycle, the sesame in this unit maintained almost its original effectiveness.

Example 9 The formulation of Example 8 was found to be only moderately soluble in concentrated brine used in the regeneration of domestic water softening units. To improve the frame contact between the resin bed and the formulation of the invention,
Various coupling agents were used fi). Kowara coupling agents are high f having a TILB of about 12 to about 30.
fLB paulownia was encapsulated. Specifically, the addition of Compound 1 subsequent to @F appeared to improve the solubility of the formulation of Example 1.

Coupling agent 1, Rohm & ) (Triton from ASS)
DF-20° denaturation ≦ sylated alcohol, 2. Triton X from Rohm & Hams
-114, octylphenoxypolyethoxyethanol, 3, Diaaid 15 from Westvaco
50. Dident acid.

Combining the formulations of the present invention with coupling agents similar to those described above, the painting process may be contaminated with organic matter, biological growth, and its exfoliation.
Alternatively, it is expected to be effective in improving the properties of water treatment solids that tend to become dirty.

The method involves adding these formulations, with or without the aforementioned coupling agents, cyclically to each regeneration cycle or backwash cycle, when these are performed separately, followed by a rinse cycle. Remove the reinforcing agent and the compounds of the present invention, including the coupling agent, when the use of a coupling agent is found to be necessary for complete dissolution or dispersion in the regenerated prine solution. consists of doing, doing.

Treating the contaminated resin with the inventive surfactants and biodispersants of the present invention substantially improves the performance properties of the inventive resin. Compared to treatments currently used in industry, the difference in restoring the performance of ion exchange resins is very substantial.

Furthermore, the new treatment sharply reduces bacterial growth on the resin and reduces the likelihood that large amounts of bacteria will be discharged into the treated feed water. When particles and bacterial debris no longer accumulate and cause excessive pressure drops across the unit, the catastrophic breakdown of the resin is reduced.

The current operating method of the ion exchange unit device 1 is to operate the device in such a way that it is contaminating and the operational difficulties are so great that it becomes unfeasible to continue using this device. . If cleaning the resin does not show the desired budding, 41
Replace the oil. Ion exchange? Since the user of F6 has no other option, this method is included in F6 and is a blessing in disguise.

The present invention provides a means of: (1) Treating the KXian-supplied Lola oil with the nonionic surfactants and biodispersants of the present invention before or during each backwash and regeneration cycle. (2) a means for improving and maintaining the performance of these resins using the aforementioned cyclic treatments; and (3) a means for preventing the accumulation of organic and microbiological contaminants by And a means for recirculating the #fu on the side so that these 4 and 4 fats are not lost due to contamination during peeling.

Such a processing program provides the following advantages: (1) The resin can be molded into an excellent mold and used with reasonably low regenerant and operating costs, and (2) Resin part The breakage of resin beads is reduced by keeping dirt and debris from moss in the device to a minimum. For these reasons, the cost savings achieved in accordance with the present invention are substantial. In addition, the resin bed does not provide any nutrients to the bacteria, and the treated water has less bacterial contamination, which makes the treated water suitable for drinking water or industrial use. It is of particular importance when used in the food or beverage industry.

The use of activated carbon and other adsorbents in pretreatment of ion conversion coordinating devices is well accepted in practice. These are extracted from water before ion exchange treatment, including chlorine, organic matter, iron, etc.
and f-s particles. It has been found that the use of the present invention extends the effectiveness of these adsorbents over long periods of time and limits bacterial growth.

Application of the products and methods of the present invention is not limited to ion exchanger #+I fats or adsorbents. Organic matter, bacteria, and other bacteria can accumulate in the camphorium.

[Brief explanation of drawings]

Figures 1, 2, and M3 (y+ are trial engravings, respectively. 1. This is a graph showing the relationship between the processing pass strength and hardness leakage of Trial Vt! 2 and Trial Engraving 3. a... ``The 2 resins that were removed (pressure α (: 4.5 PSI below) b...
Pressure drop: 1.5 PSI) C: Treated with surfactant, biodistributor and biocide, and backwashed (pressure drop cannot be measured) d: Bulk injection and reverse Washing only e... ■ Figure 4 of the book treated with biocide, biodispersant and surfactant and backwashed. %? It is a graph showing the relationship between length and ability. A... Start of supply of #1 clothes washing liquid B... Length of measured experiment Figures 5 to 7 are graphs showing the relationship between the processing capacity of the cationic resin and the leakage of the hardness of the effluent in Example 5. There is (Figure 7,
Cation unit 5). C... Before cleaning D... After cleaning Figures 8 to 12 are graphs showing the relationship between the treated metal part of the slightly basic resin of Example 50 and the conductivity of the effluent. (Figure 9, E...unit 1.F...unit 3, after washing 4
Month. Figure 10, processing he. Figure 11, Na3 sample collection date G
...1st day, H...15th day,! ...31st day. Figure 12, final result. ) Below Isamu, White

Claims (1)

[Claims] 1. Cyclically treating one bottle of water treatment solid with an effective amount of an ionic surfactant and a biodispersant! A method of improving and maintaining the performance of certain water treatment solids that are soiled or tend to become soiled with organic matter, microorganisms, and their four contaminants. 2. The method of claim 1, wherein the biocide is used in conjunction with a nonionic surfactant and a biodispersant. 3. The method of claim 2, wherein the biocide is selected from the group consisting of aliphatic quaternary ammonium salt biocides, bromonitrilo-substituted biocides, inthiazolines, and inorganic oxidizing biocides. 4. The method according to claim 1, wherein the solid for water treatment is an ion exchange resin. 5. The method according to claim 2, wherein the solid for water treatment is an ion exchange resin. 6. The ion exchange resin is selected from the group consisting of a glue-type cation resin, a dull-type anion resin, a macroporous cation resin, and a macroporous anion OII resin;
The method according to claim 4. 7. The method according to claim 5, wherein the ion exchange resin is selected from the group consisting of a shell-type cation resin, a glue-type anion resin, a macroporous cation resin, and a macroporous anion resin. 8. The method according to claim 1, wherein the nonionic surfactant has an HLB of 6 to 14. 9, nonionic surfactant with HLB of 6 to 14,
The method according to claim 2. Has an HLB of 10.4-10 and 1500-500
Ethylene oxide compound of adducts of propylene glycol and propylene oxide in molecule f' of 2. The method of claim 1, wherein the polyglycol condensate is selected from the group consisting of polyglycolic N, N-dimethylstearamide, and a nonionic amine polyglycol condensate. ~500
Ethylene oxide condensate of the adduct of propylene glycol and propylene oxide with molecules 11 of 0, nonionic polyethoxylated linear alcohol, triscyanoethylated cocodiamine, polyoxyethylene sorbitan ester acid, nonionic N,N-dimethyl 3. The method of claim 2, wherein the method is selected from the group consisting of stearamide and nonionic amine polyglycol condensates. 12. Treating up to the first 50% of the backwash water used during each backwash cycle with an effective amount of a nonionic surfactant and a biodispersant, wherein the ion exchange resin is an organic Substances, microorganisms and their jlFI! ion exchange resins used to remove ions from aqueous systems that are soiled or have a tendency to become soiled, and where the ion exchange resins are subjected to backwashing and regeneration cycles. How to improve and maintain performance. 13. The method of claim 12, wherein a biocide is used together with a non-ionic active agent and a biodispersant. 14. The biocide is an aliphatic quaternary ammonium salt biocide;
14. The method of claim 13, wherein the method is selected from the group consisting of bromonitrile agents, isothiacylates, and inorganic oxidizing biocides. 15. Ion exchange garden ζJ1 cage type cation tree, dull type anion (creation idea, macroporous cation tt
Il! 13. The method of claim 12, wherein the method is selected from the group consisting of a macroporous anionic resin. 16. Ion exchange y + resin r, cell type cation resin, resin type anion resin, macroporous cation (Ω
1111≧the method of claim 13, wherein the nonionic surfactant has an HLB of 6 to 14. 12. The method of claim 13, wherein the nonionic surfactant has an LB of 6 to 14. 19. The nonionic surfactant has an IILB of 6 to 14. And 1500~50
Ethylene oxide condensate of the adduct of propylene glycol and propylene oxide with a molecular weight of 0.00, nonionic polyethoxylated linear alcohol, triscyanoethylated cocodiamine, polyoxyethylene sorbitan ester acid, nonionic N,N- 13. The method of claim 12, wherein υ is selected from the group consisting of dimethyl stearamide, and nonionic amine polyglycol condensates. Has an HLB of 20.4-10 and 1500-500
Ethylene oxide condensate of the adduct of propylene glycol and propylene oxide with a molecular weight of 0, nonionic polyethoxylated linear alcohol, triscyanoethylated cocodiamine, polyoxyethylene sorbitan ester acid, nonionic N,N-dimethylstearin 14. The method of claim 13, wherein the method is selected from the group consisting of acid amides and nonionic amine polyglycol condensates. 21. Enable ion exchange tree 1) I''1. nonionic surfactant and biodispersion'fill at 100-180°F (37.8-82.2°C) for at least 24 hours.
Organic substances, microorganisms, and their 11iEI! A method to restore the performance of ion exchange resins that have been contaminated with substances. 22. A) present in the backwash cycle during no more than the first 50 cycles of the backwash operation. An improved backwashing method for ion exchange resins is carried out in the presence of a nonionic surfactant in combination with a biodispersant. and during the regeneration cycle, treating the ion exchange resin with an effective number of non-ionic circadian activators and biodispersants; However, organic substances, sterile living things, and part 1
llll! How to prevent things from getting dirty. 24. An improvement in cleaning through an ion exchange resin, characterized in that during the first 50 cycles of the backwashing operation, the backwashing operation is carried out in the presence of a recovery agent present in the backwashing cycle. Law. 25. Carbon adsorption Jf! 1. Water treatment solids selected from the group consisting of: 1, gravel and sand urine filters, reverse osmosis membranes and ion exchange membranes are cyclically treated with effective amounts of nonionic surfactants and biodispersants. 1. A method for improving and maintaining the performance of water treatment solids that are soiled or tend to become soiled with organic substances, microorganisms and their derivatives, characterized in that: