CN105032195A - Scale inhibitor for reverse osmosis membrane and preparation method of scale inhibitor - Google Patents
Scale inhibitor for reverse osmosis membrane and preparation method of scale inhibitor Download PDFInfo
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- CN105032195A CN105032195A CN201510370446.8A CN201510370446A CN105032195A CN 105032195 A CN105032195 A CN 105032195A CN 201510370446 A CN201510370446 A CN 201510370446A CN 105032195 A CN105032195 A CN 105032195A
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Abstract
The invention discloses a scale inhibitor for a reverse osmosis membrane and a preparation method of the scale inhibitor. The scale inhibitor is prepared from acrylic acid, polyaspartic acid, acrylic acid-2-acrylamide-2-methyl acrylic acid copolymer, polyaminopolyether methylenephosphonic acid, distilled water, 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid, sodium hypophosphite, maleic anhydride, potassium persulfate, sodium hydroxide and p-styrenesulfonic acid. The usage amount of the scale inhibitor is less and is only 2 to 8 mg/L; after the scale inhibitor is placed for one month at 60 to 80 DEG C, the scale inhibiting ratio is 96 to 100 percent; salts of calcium, magnesium, copper, iron, zinc and the like are effectively controlled, and the cleaning frequency of a reverse osmosis system is reduced.
Description
Technical field
The application belongs to environmental protection reagent process field, particularly relates to a kind of environmental protection, antisludging agent for osmosis-reverse membrane that corrosion inhibition is good and preparation method thereof.
Background technology
Antisludging agent (scaleinhibitor): be the slightly solubility inorganic salts had in energy disperse water, prevention or the precipitation of interference slightly solubility inorganic salts in metal surface, fouling function, and maintain the class medicament that hardware has good heat-transfer effect.Cold exchange device antiseptic corrosion inhibitor is with epoxy resin and specific amino resin for base-material, and it is formulated to add the appropriate various auxiliary agent such as various antirust, anticorrosion, is one pack system.It has excellent shielding, impervious, rustless property, good scale inhibition, thermal conductivity, the performances such as excellent weak acid resistant, highly basic, organic solvent, its strong adhesion, and rete is bright, pliable and tough, fine and close, hard.
The result of peptizaiton stops into dirt interparticlely contact with each other and condense, thus can stop the growth of dirt.Becoming dirty particle can be calcium, magnesium ion, can also be dust, silt or other water-insolubles.Dispersant is the polymer with certain relative molecular mass (or degree of polymerization), and the height of dispersive property is closely related with the size of relative molecular mass (or degree of polymerization).The degree of polymerization is too low, then few by the population of absorption dispersion, dispersion efficiency is low; The degree of polymerization is too high, then too much by the population of absorption dispersion, water body becomes muddy, even forms flco (effect is now close with flocculant).Compared with chelation, peptizaiton is efficient.In middle high hardness water, the divergent function of antisludging agent plays a major role.
Antisludging agent for osmosis-reverse membrane is the antisludging agent being specifically designed to counter-infiltration (RO) system, can extend the cleaning systems cycle, makes membrane lifetime extend and reduce costs, and can ensure that system is normally run according to design aquifer yield.Large, medium and small boiler stops fouling and corrosion, and chemical treatment method in useable stove, adds antiseptic corrosion inhibitor in boiler feed water, reduces boiler water hardness demineralized water, and reduce fouling and corrosion, this method is simple and practical, receives praises from customers.
Reverse osmosis antisludging agent is the antisludging agent being specifically designed to counter-infiltration (RO) system and nanofiltration (NF) and ultrafiltration (UF) system, can prevent face fouling, can improve aquifer yield and produce water quality, reducing operating cost.Effective control inorganic matter fouling in very large concentration range, do not condense with iron-aluminium oxide and silicon compound and form insoluble matter, effectively can suppress polymerization and the deposition of silicon, dense water side SiO2 concentration can reach 290, can be used for counter-infiltration CA and TFC film, NF membrane and milipore filter, splendid dissolubility and stability are all effective within the scope of 5-10 to water ph value.
Effective control calcium carbonate, calcium sulfate, strontium sulfate fouling, the LSI of calcium carbonate is up to+3.0 still unlikely foulings, for all main reverse osmosis membranes, dispersion is blocked particulate and is maintained reverse osmosis membrane surface clean, the pH scope of water still belongs in effective range from 5-9, direct interpolation or dilution use, compatible to relevant flocculant, can be used for controlling diaphragm piece-rate system fouling precipitation and reduce particles holography.
Be applicable to the material of various film pipe, be applicable in various different water quality, still have the scale prevention ability of high effect, reduce the cleaning frequency of film pipe, the demand of acid adding can be replaced, prevent acid adding cause possible etching problem, addition is extremely low, there is splendid thresholding effect simultaneously, the scale inhibition that can obtain optimum economic benefit controls, to iron, effect that the metal ions such as manganese all have good chelating stable, prevent it from producing dirt on film pipe, product efficacy and stability are all much better than the antisludging agent of calgon or straight polymer type, reverse osmosis membrane system can be allowed to operate in higher producing water ratio.
Reverse osmosis technology principle is under the effect higher than solution osmotic pressure, these materials and water can not be separated according to other materials through pellicle.The membrane aperture of reverse osmosis membrane is very little, therefore, it is possible to effectively remove dissolved salts, colloid, microorganism, organic matter etc. in water.System have water quality good, consume energy low, pollution-free, technique is simple, the advantage such as easy and simple to handle.And universal along with humanity concept, and the formation of novel harmonious society, designs a kind of nontoxic, odorless, environmental protection and good antisludging agent for osmosis-reverse membrane of corrosion inhibition and preparation method thereof is very important.
Summary of the invention
the technical problem solved:
The application, for above-mentioned technical problem, provides a kind of antisludging agent for osmosis-reverse membrane and preparation method thereof, solve existing Scale Inhibitors for Water cost high, have the technical problems such as pollution, poor heat stability and slowly-releasing poor performance to water body.
technical scheme:
A kind of antisludging agent for osmosis-reverse membrane, the raw materials by weight portion proportioning of described antisludging agent for osmosis-reverse membrane is as follows: acrylic acid 5-45 part; Poly-aspartate 1-20 part; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 5-25 part; Multiple-β transistor 1-5 part; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 0.5-2.5 part; Sodium hypophosphite 40-60 part; Maleic anhydride 20-40 part; Potassium peroxydisulfate 1-20 part; NaOH is 0.5-4.5 part; Styrene sulfonic acid 10-30 part.
As a preferred technical solution of the present invention: the raw materials by weight portion proportioning of described antisludging agent for osmosis-reverse membrane is as follows: 15 parts, acrylic acid; Poly-aspartate 5 parts; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 10 part; Multiple-β transistor 2 parts; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 1 part; Sodium hypophosphite 45 parts; Maleic anhydride 25 parts; Potassium peroxydisulfate 5 parts; NaOH is 1.5 parts; Styrene sulfonic acid 15 parts.
As a preferred technical solution of the present invention: the raw materials by weight portion proportioning of described antisludging agent for osmosis-reverse membrane is as follows: 35 parts, acrylic acid; Poly-aspartate 15 parts; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 20 parts; Multiple-β transistor 4 parts; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 2 parts; Sodium hypophosphite 55 parts; Maleic anhydride 35 parts; Potassium peroxydisulfate 15 parts; NaOH is 3.5 parts; Styrene sulfonic acid 25 parts.
As a preferred technical solution of the present invention: the raw materials by weight portion proportioning of described antisludging agent for osmosis-reverse membrane is as follows: 25 parts, acrylic acid; Poly-aspartate 10 parts; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 15 parts; Multiple-β transistor 3 parts; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 1.5 parts; Sodium hypophosphite 50 parts; Maleic anhydride 30 parts; Potassium peroxydisulfate 10 parts; NaOH is 2.5 parts; Styrene sulfonic acid 20 parts.
As a preferred technical solution of the present invention: the preparation method of described antisludging agent for osmosis-reverse membrane, comprises the steps:
The first step: take acrylic acid, poly-aspartate, acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer, multiple-β transistor, distilled water, 2-phosphonobutane-1 according to parts by weight proportioning, 2,4-tricarboxylic acids, sodium hypophosphite, maleic anhydride, potassium peroxydisulfate, NaOH and styrene sulfonic acid;
Second step: add potassium peroxydisulfate and distilled water in the four-hole boiling flask that electric mixer, dropping funel, thermometer and reflux condensing tube are housed, be heated to 65-85 DEG C, stir 35-55min, drip styrene sulfonic acid and poly-aspartate, be warming up to 90-110 DEG C, reaction 4-6h;
3rd step: add ethylenediamine, maleic anhydride, acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer and NaOH, be warming up to 115-135 DEG C, reaction 3-5h;
4th step: be warming up to 135-155 DEG C, add surplus stock, stirs 95-115min, obtains antisludging agent for osmosis-reverse membrane.
beneficial effect:
A kind of antisludging agent for osmosis-reverse membrane of the present invention and preparation method thereof adopts above technical scheme compared with prior art, there is following technique effect: 1, the extensive fouling on reverse osmosis membrane such as control of product calcium carbonate, calcium sulfate, barium sulfate, to suspensions such as mud, there is certain dispersibility, prolonging service lifetime of film, reduces equipment operating cost; 2, each component synergistic function, substantially increases the result of use of composite drug, improves antisludging agent to the lower bound scale-inhibiting properties of reverse osmosis concentrated water, is applicable to multiple types reverse osmosis membrane, low-phosphorous, nontoxic, pollution-free, uses simple; 3, antisludging agent use amount is few, is only 2-8mg/L, saves use cost, is applicable to high pH, high alkalinity, the various complex conditions water quality such as high rigidity; 4, effect is lasting, and place one month for 60-80 DEG C, scale inhibition performance 96-100%, effectively controls the salts such as calcium, magnesium, copper, iron, zinc, reduces counter-infiltration system cleaning frequency, the widespread production not division of history into periods can replace current material.
Detailed description of the invention
embodiment 1:
5 parts, acrylic acid is taken according to parts by weight proportioning; Poly-aspartate 1 part; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 5 parts; Multiple-β transistor 1 part; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 0.5 part; Sodium hypophosphite 40 parts; Maleic anhydride 20 parts; Potassium peroxydisulfate 1 part; NaOH is 0.5 part; Styrene sulfonic acid 10 parts.
In the four-hole boiling flask that electric mixer, dropping funel, thermometer and reflux condensing tube are housed, add potassium peroxydisulfate and distilled water, be heated to 65 DEG C, stir 35min, drip styrene sulfonic acid and poly-aspartate, be warming up to 90 DEG C, reaction 4h.
Add ethylenediamine, maleic anhydride, acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer and NaOH, be warming up to 115 DEG C, reaction 3h, is warming up to 135 DEG C, adds surplus stock, stirs 95min, obtains antisludging agent for osmosis-reverse membrane.
The extensive foulings on reverse osmosis membrane such as control of product calcium carbonate, calcium sulfate, barium sulfate, have certain dispersibility to suspensions such as mud, prolonging service lifetime of film, reduce equipment operating cost; Each component synergistic function, substantially increases the result of use of composite drug, improves antisludging agent to the lower bound scale-inhibiting properties of reverse osmosis concentrated water, is applicable to multiple types reverse osmosis membrane, low-phosphorous, nontoxic, pollution-free, uses simple; Antisludging agent use amount is few, is only 8mg/L, saves use cost, is applicable to high pH, high alkalinity, the various complex conditions water quality such as high rigidity; Effect is lasting, and place one month for 60 DEG C, scale inhibition performance 96%, effectively controls the salts such as calcium, magnesium, copper, iron, zinc, reduces counter-infiltration system cleaning frequency.
embodiment 2:
45 parts, acrylic acid is taken according to parts by weight proportioning; Poly-aspartate 20 parts; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 25 parts; Multiple-β transistor 5 parts; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 2.5 parts; Sodium hypophosphite 60 parts; Maleic anhydride 40 parts; Potassium peroxydisulfate 20 parts; NaOH is 4.5 parts; Styrene sulfonic acid 30 parts.
In the four-hole boiling flask that electric mixer, dropping funel, thermometer and reflux condensing tube are housed, add potassium peroxydisulfate and distilled water, be heated to 85 DEG C, stir 55min, drip styrene sulfonic acid and poly-aspartate, be warming up to 110 DEG C, reaction 6h.
Add ethylenediamine, maleic anhydride, acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer and NaOH, be warming up to 135 DEG C, reaction 5h, is warming up to 155 DEG C, adds surplus stock, stirs 115min, obtains antisludging agent for osmosis-reverse membrane.
The extensive foulings on reverse osmosis membrane such as control of product calcium carbonate, calcium sulfate, barium sulfate, have certain dispersibility to suspensions such as mud, prolonging service lifetime of film, reduce equipment operating cost; Each component synergistic function, substantially increases the result of use of composite drug, improves antisludging agent to the lower bound scale-inhibiting properties of reverse osmosis concentrated water, is applicable to multiple types reverse osmosis membrane, low-phosphorous, nontoxic, pollution-free, uses simple; Antisludging agent use amount is few, is only 6mg/L, saves use cost, is applicable to high pH, high alkalinity, the various complex conditions water quality such as high rigidity; Effect is lasting, and place one month for 65 DEG C, scale inhibition performance 97%, effectively controls the salts such as calcium, magnesium, copper, iron, zinc, reduces counter-infiltration system cleaning frequency.
embodiment 3:
15 parts, acrylic acid is taken according to parts by weight proportioning; Poly-aspartate 5 parts; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 10 part; Multiple-β transistor 2 parts; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 1 part; Sodium hypophosphite 45 parts; Maleic anhydride 25 parts; Potassium peroxydisulfate 5 parts; NaOH is 1.5 parts; Styrene sulfonic acid 15 parts.
In the four-hole boiling flask that electric mixer, dropping funel, thermometer and reflux condensing tube are housed, add potassium peroxydisulfate and distilled water, be heated to 65 DEG C, stir 35min, drip styrene sulfonic acid and poly-aspartate, be warming up to 90 DEG C, reaction 4h.
Add ethylenediamine, maleic anhydride, acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer and NaOH, be warming up to 115 DEG C, reaction 3h, is warming up to 135 DEG C, adds surplus stock, stirs 95min, obtains antisludging agent for osmosis-reverse membrane.
The extensive foulings on reverse osmosis membrane such as control of product calcium carbonate, calcium sulfate, barium sulfate, have certain dispersibility to suspensions such as mud, prolonging service lifetime of film, reduce equipment operating cost; Each component synergistic function, substantially increases the result of use of composite drug, improves antisludging agent to the lower bound scale-inhibiting properties of reverse osmosis concentrated water, is applicable to multiple types reverse osmosis membrane, low-phosphorous, nontoxic, pollution-free, uses simple; Antisludging agent use amount is few, is only 5mg/L, saves use cost, is applicable to high pH, high alkalinity, the various complex conditions water quality such as high rigidity; Effect is lasting, and place one month for 70 DEG C, scale inhibition performance 98%, effectively controls the salts such as calcium, magnesium, copper, iron, zinc, reduces counter-infiltration system cleaning frequency.
embodiment 4:
35 parts, acrylic acid is taken according to parts by weight proportioning; Poly-aspartate 15 parts; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 20 parts; Multiple-β transistor 4 parts; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 2 parts; Sodium hypophosphite 55 parts; Maleic anhydride 35 parts; Potassium peroxydisulfate 15 parts; NaOH is 3.5 parts; Styrene sulfonic acid 25 parts.
In the four-hole boiling flask that electric mixer, dropping funel, thermometer and reflux condensing tube are housed, add potassium peroxydisulfate and distilled water, be heated to 85 DEG C, stir 55min, drip styrene sulfonic acid and poly-aspartate, be warming up to 110 DEG C, reaction 6h.
Add ethylenediamine, maleic anhydride, acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer and NaOH, be warming up to 135 DEG C, reaction 5h, is warming up to 155 DEG C, adds surplus stock, stirs 115min, obtains antisludging agent for osmosis-reverse membrane.
The extensive foulings on reverse osmosis membrane such as control of product calcium carbonate, calcium sulfate, barium sulfate, have certain dispersibility to suspensions such as mud, prolonging service lifetime of film, reduce equipment operating cost; Each component synergistic function, substantially increases the result of use of composite drug, improves antisludging agent to the lower bound scale-inhibiting properties of reverse osmosis concentrated water, is applicable to multiple types reverse osmosis membrane, low-phosphorous, nontoxic, pollution-free, uses simple; Antisludging agent use amount is few, is only 4mg/L, saves use cost, is applicable to high pH, high alkalinity, the various complex conditions water quality such as high rigidity; Effect is lasting, and place one month for 75 DEG C, scale inhibition performance 98%, effectively controls the salts such as calcium, magnesium, copper, iron, zinc, reduces counter-infiltration system cleaning frequency.
embodiment 5:
25 parts, acrylic acid is taken according to parts by weight proportioning; Poly-aspartate 10 parts; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 15 parts; Multiple-β transistor 3 parts; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 1.5 parts; Sodium hypophosphite 50 parts; Maleic anhydride 30 parts; Potassium peroxydisulfate 10 parts; NaOH is 2.5 parts; Styrene sulfonic acid 20 parts.
In the four-hole boiling flask that electric mixer, dropping funel, thermometer and reflux condensing tube are housed, add potassium peroxydisulfate and distilled water, be heated to 75 DEG C, stir 45min, drip styrene sulfonic acid and poly-aspartate, be warming up to 100 DEG C, reaction 5h.
Add ethylenediamine, maleic anhydride, acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer and NaOH, be warming up to 125 DEG C, reaction 4h, is warming up to 145 DEG C, adds surplus stock, stirs 105min, obtains antisludging agent for osmosis-reverse membrane.
The extensive foulings on reverse osmosis membrane such as control of product calcium carbonate, calcium sulfate, barium sulfate, have certain dispersibility to suspensions such as mud, prolonging service lifetime of film, reduce equipment operating cost; Each component synergistic function, substantially increases the result of use of composite drug, improves antisludging agent to the lower bound scale-inhibiting properties of reverse osmosis concentrated water, is applicable to multiple types reverse osmosis membrane, low-phosphorous, nontoxic, pollution-free, uses simple; Antisludging agent use amount is few, is only 2mg/L, saves use cost, is applicable to high pH, high alkalinity, the various complex conditions water quality such as high rigidity; Effect is lasting, and place one month for 80 DEG C, scale inhibition performance 100%, effectively controls the salts such as calcium, magnesium, copper, iron, zinc, reduces counter-infiltration system cleaning frequency.
Composition all components in above embodiment all can business be bought.
Above-described embodiment is just for setting forth content of the present invention, instead of restriction, and any change therefore in the implication suitable with claims of the present invention and scope, all should think to be included in the scope of claims.
Claims (5)
1. an antisludging agent for osmosis-reverse membrane, is characterized in that the raw materials by weight portion proportioning of described antisludging agent for osmosis-reverse membrane is as follows: acrylic acid 5-45 part; Poly-aspartate 1-20 part; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 5-25 part; Multiple-β transistor 1-5 part; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 0.5-2.5 part; Sodium hypophosphite 40-60 part; Maleic anhydride 20-40 part; Potassium peroxydisulfate 1-20 part; NaOH is 0.5-4.5 part; Styrene sulfonic acid 10-30 part.
2. a kind of antisludging agent for osmosis-reverse membrane according to claim 1, is characterized in that described antisludging agent for osmosis-reverse membrane raw materials by weight portion proportioning is as follows: 15 parts, acrylic acid; Poly-aspartate 5 parts; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 10 part; Multiple-β transistor 2 parts; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 1 part; Sodium hypophosphite 45 parts; Maleic anhydride 25 parts; Potassium peroxydisulfate 5 parts; NaOH is 1.5 parts; Styrene sulfonic acid 15 parts.
3. a kind of antisludging agent for osmosis-reverse membrane according to claim 1, is characterized in that the raw materials by weight portion proportioning of described antisludging agent for osmosis-reverse membrane is as follows: 35 parts, acrylic acid; Poly-aspartate 15 parts; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 20 parts; Multiple-β transistor 4 parts; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 2 parts; Sodium hypophosphite 55 parts; Maleic anhydride 35 parts; Potassium peroxydisulfate 15 parts; NaOH is 3.5 parts; Styrene sulfonic acid 25 parts.
4. a kind of antisludging agent for osmosis-reverse membrane according to claim 1, is characterized in that the raw materials by weight portion proportioning of described antisludging agent for osmosis-reverse membrane is as follows: 25 parts, acrylic acid; Poly-aspartate 10 parts; Acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer 15 parts; Multiple-β transistor 3 parts; Distilled water 100 parts; 2-phosphonobutane-1,2,4-tricarboxylic acids 1.5 parts; Sodium hypophosphite 50 parts; Maleic anhydride 30 parts; Potassium peroxydisulfate 10 parts; NaOH is 2.5 parts; Styrene sulfonic acid 20 parts.
5. a preparation method for antisludging agent for osmosis-reverse membrane described in claim 1, is characterized in that, comprises the steps:
The first step: take acrylic acid, poly-aspartate, acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer, multiple-β transistor, distilled water, 2-phosphonobutane-1 according to parts by weight proportioning, 2,4-tricarboxylic acids, sodium hypophosphite, maleic anhydride, potassium peroxydisulfate, NaOH and styrene sulfonic acid;
Second step: add potassium peroxydisulfate and distilled water in the four-hole boiling flask that electric mixer, dropping funel, thermometer and reflux condensing tube are housed, be heated to 65-85 DEG C, stir 35-55min, drip styrene sulfonic acid and poly-aspartate, be warming up to 90-110 DEG C, reaction 4-6h;
3rd step: add ethylenediamine, maleic anhydride, acrylic acid-2-acrylamide-2-methyl propane sulfonic copolymer and NaOH, be warming up to 115-135 DEG C, reaction 3-5h;
4th step: be warming up to 135-155 DEG C, add surplus stock, stirs 95-115min, obtains antisludging agent for osmosis-reverse membrane.
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| CN105597550A (en) * | 2015-12-18 | 2016-05-25 | 潍坊源洁环保科技有限公司 | Reverse osmosis membrane composite anti-scaling bactericide |
| CN107954525A (en) * | 2017-11-29 | 2018-04-24 | 无锡昊瑜节能环保设备有限公司 | A kind of preparation method of the environmentally friendly corrosion inhibiting and descaling agent of sewage disposal |
| CN108715485A (en) * | 2018-05-29 | 2018-10-30 | 苏州佑君环境科技有限公司 | A kind of resistance carbonate scale antisludging agent and preparation method thereof |
| CN109592746A (en) * | 2018-12-28 | 2019-04-09 | 上海丰信环保科技有限公司 | Over-expense chain reverse osmosis antisludging agent of reticular structure and preparation method thereof and application |
| CN112023711A (en) * | 2019-06-04 | 2020-12-04 | 福州源洁环保科技有限公司 | RO reverse osmosis membrane treating agent and preparation method thereof |
| CN114768542A (en) * | 2022-03-04 | 2022-07-22 | 山东天庆科技发展有限公司 | High-silicon water reverse osmosis scale inhibitor and preparation method thereof |
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