CN115557617A - Reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water and preparation method thereof - Google Patents
Reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water and preparation method thereof Download PDFInfo
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- 230000007797 corrosion Effects 0.000 title claims abstract description 122
- 238000005260 corrosion Methods 0.000 title claims abstract description 122
- 239000003112 inhibitor Substances 0.000 title claims abstract description 110
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000011574 phosphorus Substances 0.000 title claims abstract description 40
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 40
- 239000012528 membrane Substances 0.000 title claims abstract description 39
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 39
- 238000004064 recycling Methods 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims description 16
- 239000007864 aqueous solution Substances 0.000 claims abstract description 57
- 229920001577 copolymer Polymers 0.000 claims abstract description 47
- 150000007942 carboxylates Chemical class 0.000 claims abstract description 32
- CAJXHCZGSUCGGY-UHFFFAOYSA-N 3-benzyl-4-oxo-4-sulfanylbutanoic acid Chemical compound OC(=O)CC(C(S)=O)CC1=CC=CC=C1 CAJXHCZGSUCGGY-UHFFFAOYSA-N 0.000 claims abstract description 31
- 125000000542 sulfonic acid group Chemical group 0.000 claims abstract description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- SQIRRQNPAZGHCV-UHFFFAOYSA-N C(C1=CC=CC=C1)C(C(=O)O)(CC(=O)O)S(=O)(=O)O Chemical compound C(C1=CC=CC=C1)C(C(=O)O)(CC(=O)O)S(=O)(=O)O SQIRRQNPAZGHCV-UHFFFAOYSA-N 0.000 claims abstract description 13
- UENWRTRMUIOCKN-UHFFFAOYSA-N benzyl thiol Chemical compound SCC1=CC=CC=C1 UENWRTRMUIOCKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- MSJMDZAOKORVFC-UAIGNFCESA-L disodium maleate Chemical compound [Na+].[Na+].[O-]C(=O)\C=C/C([O-])=O MSJMDZAOKORVFC-UAIGNFCESA-L 0.000 claims abstract description 12
- 150000001734 carboxylic acid salts Chemical class 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims description 27
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 19
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 12
- 150000001336 alkenes Chemical class 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- 230000033228 biological regulation Effects 0.000 claims description 9
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 8
- 239000012964 benzotriazole Substances 0.000 claims description 8
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 7
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 7
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 5
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004021 humic acid Substances 0.000 claims description 4
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 3
- -1 carbonyl olefin Chemical class 0.000 claims description 3
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 3
- 239000011976 maleic acid Substances 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 3
- 159000000000 sodium salts Chemical class 0.000 claims description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 3
- 238000012851 eutrophication Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002689 soil Substances 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical class OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000012458 free base Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical class OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000012085 test solution Substances 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Chemical class OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical class OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 1
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 description 1
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 1
- 229920001202 Inulin Polymers 0.000 description 1
- 229920000805 Polyaspartic acid Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Chemical class [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- STNSYZSNIYTNMI-UHFFFAOYSA-N azane;[2-[bis(phosphonomethyl)amino]ethyl-(phosphonomethyl)amino]methylphosphonic acid Chemical compound N.OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O STNSYZSNIYTNMI-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 239000000174 gluconic acid Chemical class 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229940029339 inulin Drugs 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 108010064470 polyaspartate Proteins 0.000 description 1
- 229920001529 polyepoxysuccinic acid Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229940083542 sodium Drugs 0.000 description 1
- 235000015424 sodium Nutrition 0.000 description 1
- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical compound [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 229960001790 sodium citrate Drugs 0.000 description 1
- 235000011083 sodium citrates Nutrition 0.000 description 1
- 239000000176 sodium gluconate Substances 0.000 description 1
- 235000012207 sodium gluconate Nutrition 0.000 description 1
- 229940005574 sodium gluconate Drugs 0.000 description 1
- 239000001433 sodium tartrate Substances 0.000 description 1
- 229960002167 sodium tartrate Drugs 0.000 description 1
- 235000011004 sodium tartrates Nutrition 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000011975 tartaric acid Chemical class 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water, which comprises benzylthiosuccinic acid, a copolymer containing sulfonic acid groups, polyhydroxy carboxylate, a corrosion inhibitor and an aqueous solution; benzylthiosuccinic acid: sulfonic acid group-containing copolymer: polyhydroxy carboxylic acid salt: corrosion inhibitor: the mass ratio of the aqueous solution is (20-50): (10-32): (18-22): (5-10): (60-80), benzylthiosuccinic acid: sulfonic acid group-containing copolymer: polyhydroxy carboxylic acid salt: corrosion inhibitor: the mass ratio of the aqueous solution is 30:25:20:8:75, benzylsulfosuccinic acid including disodium maleate, benzylmercaptan and ethanol, disodium maleate: benzyl mercaptan: the mass ratio of the ethanol is (2-10): (1-12): (30-50). By arranging the scale and corrosion inhibitor, the invention avoids the problem that the scale and corrosion inhibitor pollutes the environment after being used, avoids water and soil eutrophication, greatly reduces the damage of the scale and corrosion inhibitor to the ecological environment and meets the requirement of environment-friendly production.
Description
Technical Field
The invention belongs to the technical field of scale and corrosion inhibitors, and particularly relates to a reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water and a preparation method thereof.
Background
The reclaimed water reuse is to treat domestic sewage or industrial wastewater by advanced technology to remove various impurities and remove toxic and harmful substances and certain heavy metal ions polluting water bodies, and further sterilize the water bodies to ensure that the water bodies are colorless, odorless and clear and transparent, and reach or exceed the national standard of the miscellaneous water, so that the reclaimed water reuse system is widely applied to enterprise production or residential life, and is suitable for watering greenbelts, sprinkling and sweeping sanitation, flushing roads, stations, platforms and warehouses of units such as hotels, restaurants, residential quarters, apartments, schools, hospitals, factory areas, organs and troops, landscape water, fire-fighting makeup water, water cooling circulation makeup water, flushing water and the like.
In the process of recycling reclaimed water, a reverse osmosis membrane is needed to remove impurities, but inorganic salt dirt is easily accumulated on the surface of the reverse osmosis membrane due to the fact that elements such as phosphorus are contained in the reclaimed water, and if the elements are not treated in time, the scaling phenomenon on the surface of the reverse osmosis membrane can occur, so that the normal use of the reverse osmosis membrane is influenced, and certain economic loss is brought to users.
At present, a scale and corrosion inhibitor is used in a reverse osmosis membrane scaling treatment method, and the scale and corrosion inhibitor is a water treatment agent with a composite proportion, has a synergistic effect, and can simultaneously reduce the formation of scale and prevent equipment corrosion. The existing scale and corrosion inhibitor is generally composed of organic phosphorus, copolymer, corrosion inhibitor and the like, has good chemical stability, is not easy to hydrolyze, has excellent corrosion inhibition performance on most metals, has excellent scale and corrosion inhibition dispersion performance on calcium carbonate, calcium phosphate and the like, and has good scale and corrosion inhibition performance.
However, the scale and corrosion inhibitor in the prior art is easy to pollute the environment when in use, namely, the phosphorus element can cause water eutrophication, and the water is randomly discharged, so that the ecological environment is easy to be damaged, and the requirements of environmental protection are not met.
Therefore, in order to solve the above technical problems, it is necessary to provide a reverse osmosis membrane scale and corrosion inhibitor for reuse of phosphorus-containing reclaimed water and a preparation method thereof.
Disclosure of Invention
The invention aims to provide a reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water and a preparation method thereof, which aim to solve the problem that the scale and corrosion inhibitor easily causes environmental pollution.
In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:
a reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises benzylthiosuccinic acid, a copolymer containing sulfonic acid groups, polyhydroxy carboxylate, a corrosion inhibitor and an aqueous solution;
wherein the benzylsulfosuccinic acid: sulfonic acid group-containing copolymer: polyhydroxy carboxylic acid salt: corrosion inhibitor: the mass ratio of the aqueous solution is (20-50): (10-32): (18-22): (5-10): (60-80).
Further, the benzylsulfosuccinic acid: sulfonic acid group-containing copolymer: polyhydroxy carboxylic acid salt: corrosion inhibitor: the mass ratio of the aqueous solution is 30:25:20:8:75.
further, the benzylsulfosuccinic acid comprises disodium maleate, benzyl mercaptan and ethanol, wherein the ratio of the disodium maleate: benzyl mercaptan: the mass ratio of the ethanol is (2-10): (1-12): (30-50).
Further, the disodium maleate: benzyl mercaptan: the mass ratio of ethanol is 1:1:8.
further, the sulfonic acid group-containing copolymer is a copolymer of carbonyl group-containing olefin and sulfonic acid group-containing olefin, and the carbonyl group-containing olefin is one of acrylic acid, maleic acid and maleic anhydride.
Further, the mol ratio of the sulfonic acid group-containing olefin structural unit is 8-30%, and the weight average molecular weight of the sulfonic acid group-containing copolymer is 1200-52000.
Further, the polyhydroxy carboxylate is one of potassium salt, sodium salt or potassium-sodium double salt of humic acid.
Further, the corrosion inhibitor comprises sodium dodecyl benzene sulfonate and benzotriazole, and the weight ratio of the sodium dodecyl benzene sulfonate to the benzotriazole is (6-13): 1.
further, the aqueous solution comprises water and phosphorus-free base salt, and the mass ratio of the water to the phosphorus-free base salt is (8-9): 2.
a preparation method of the reverse osmosis membrane scale and corrosion inhibitor for recycling the phosphorus-containing reclaimed water comprises the following steps:
s1, weighing benzylthiosuccinic acid, a copolymer containing sulfonic acid groups, polyhydroxy carboxylate, a corrosion inhibitor and an aqueous solution according to a mass ratio for later use;
s2, uniformly stirring benzylthiosuccinic acid, a copolymer containing sulfonic groups and polyhydroxy carboxylate, standing for 10 minutes, and heating for 10-20 minutes by using heating equipment at the temperature of 50-90 ℃ to obtain an initial agent;
s3, adding the initial agent into an aqueous solution with the mass ratio of 60-80%, and stirring for 5-10min by using a vacuum stirrer to obtain an aqueous solution;
and S4, adding a corrosion inhibitor into the aqueous solution, and stirring for 20-30min under the regulation of normal temperature to obtain the scale and corrosion inhibitor.
Compared with the prior art, the invention has the following advantages:
by arranging the scale and corrosion inhibitor, the invention avoids the problem that the scale and corrosion inhibitor pollutes the environment after being used, avoids water and soil eutrophication, greatly reduces the damage of the scale and corrosion inhibitor to the ecological environment and meets the requirement of environment-friendly production.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is also possible for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is an analysis table of an embodiment of a reverse osmosis membrane scale and corrosion inhibitor for reuse of phosphorus-containing reclaimed water according to an embodiment of the present invention;
FIG. 2 is a comparative example analysis table of a reverse osmosis membrane scale and corrosion inhibitor for reuse of phosphorus-containing reclaimed water according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.
The invention discloses a reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water, which comprises sulfo succinic acid, copolymer containing sulfonic group, polyhydroxy carboxylate, a corrosion inhibitor and aqueous solution.
Wherein, benzylthiosuccinic acid: sulfonic acid group-containing copolymer: polyhydroxy carboxylic acid salt: corrosion inhibitor: the mass ratio of the aqueous solution is (20-50): (10-32): (18-22): (5-10): (60-80).
Preferably, benzylthiosuccinic acid: sulfonic acid group-containing copolymer: polyhydroxy carboxylic acid salt: corrosion inhibitor: the mass ratio of the aqueous solution is 30:25:20:8:75.
in one embodiment of the invention, benzylsulfosuccinic acid can enable the scale and corrosion inhibitor to exert a scale inhibition effect in a high-temperature environment, and the sulfonic acid group-containing copolymer has extremely strong dispersibility, so that the scale and corrosion inhibition performance of the scale and corrosion inhibitor can be further improved.
Optionally, the salt of a polyhydroxycarboxylic acid is selected from at least one of potassium, sodium or potassium-sodium double salts of citric acid, tartaric acid, gluconic acid and humic acid.
Preferably, the polyhydroxy carboxylic acid salt is selected from at least one of sodium citrate, sodium tartrate, sodium gluconate and sodium humate.
Wherein, the corrosion inhibitor is concentrated mother liquor, and the preparation method of the corrosion inhibitor can be as follows: uniformly mixing carboxymethyl inulin, polyhydroxy carboxylate, polyaspartic acid and/or polyepoxysuccinic acid, zinc salt, heterocyclic compound and a proper amount of water to obtain the required composite scale and corrosion inhibitor.
In addition, benzylsulfosuccinic acid includes disodium maleate, benzylmercaptan and ethanol, disodium maleate: benzyl mercaptan: the mass ratio of the ethanol is (2-10): (1-12): (30-50).
Specifically, disodium maleate: benzyl mercaptan: the mass ratio of ethanol is 1:1:8.
in an embodiment of the present invention, a preparation process of benzylthiosuccinic acid includes: adding disodium maleate and benzylmercaptan into ethanol according to a 1:1 molar ratio, heating and refluxing for 5-15 hours to obtain benzylsulfosuccinic acid solution, and freeze-drying the benzylsulfosuccinic acid solution in a freeze dryer to obtain the benzylsulfosuccinic acid.
In addition, the sulfonic acid group-containing copolymer is a copolymer of a carbonyl group-containing olefin and a sulfonic acid group-containing olefin, and the carbonyl group-containing olefin is one of acrylic acid, maleic acid, and maleic anhydride.
In one embodiment of the present invention, the molar ratio of the sulfonic acid group-containing olefin structural unit is 8 to 30%, and the weight average molecular weight of the sulfonic acid group-containing copolymer is 1200 to 52000.
Preferably, the polyhydroxy carboxylate is one of potassium salt, sodium salt or potassium-sodium double salt of humic acid.
Wherein, the corrosion inhibitor comprises sodium dodecyl benzene sulfonate and benzotriazole, and the weight ratio of the sodium dodecyl benzene sulfonate to the benzotriazole is (6-13): 1.
specifically, sodium dodecyl benzene sulfonate in the corrosion inhibitor is used for cleaning and activating a metal surface and helping benzotriazole to form a film, a large amount of the corrosion inhibitor is needed to ensure that the metal surface is clean, the amount of the benzotriazole needed after the film is formed on the metal surface is relatively reduced, and only the loss amount of circulating water in the using process needs to be supplemented, so that the content of the corrosion inhibitor is relatively low.
In addition, the aqueous solution comprises water and non-phosphate salt, and the mass ratio of the water to the non-phosphate salt is (8-9): 2, the phosphorus-free base salt has little pollution to the environment, is suitable for being used in a large amount in treatment of industrial circulating water, and can effectively reduce the pollution to the environment after the wastewater is discharged.
A preparation method of reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises the following steps:
s1, weighing benzylthiosuccinic acid, a copolymer containing sulfonic acid groups, polyhydroxy carboxylate, a corrosion inhibitor and an aqueous solution according to a mass ratio for later use;
s2, uniformly stirring benzylthiosuccinic acid, sulfonic acid group-containing copolymer and polyhydroxy carboxylate, standing for 10 minutes, and heating for 10-20 minutes by using heating equipment at the temperature of 50-90 ℃ to obtain an initial agent;
s3, adding the initial agent into an aqueous solution with the mass ratio of 60-80%, and stirring for 5-10min by using a vacuum stirrer to obtain an aqueous solution;
and S4, adding a corrosion inhibitor into the aqueous solution, and stirring for 20-30min under the regulation of normal temperature to obtain the scale and corrosion inhibitor.
Example 1
A reverse osmosis membrane scale and corrosion inhibitor for reuse of phosphorus-containing reclaimed water comprises, by mass, 20% of benzylthiosuccinic acid, 10% of a copolymer containing a sulfonic group, 18% of a polyhydroxy carboxylate, 5% of a corrosion inhibitor and 60% of an aqueous solution.
A preparation method of reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises the following steps:
s1, weighing benzylthiosuccinic acid, a copolymer containing sulfonic acid groups, polyhydroxy carboxylate, a corrosion inhibitor and an aqueous solution according to a mass ratio for later use;
s2, uniformly stirring benzylthiosuccinic acid, a copolymer containing sulfonic groups and polyhydroxy carboxylate, standing for 10 minutes, and heating for 10 minutes by using heating equipment at the temperature of 50 ℃ to obtain an initial agent;
s3, adding the initial agent into an aqueous solution with the mass ratio of 60%, and stirring for 55min by using a vacuum stirrer to obtain an aqueous solution;
and S4, adding a corrosion inhibitor into the aqueous solution, and stirring for 20min under the regulation of normal temperature to obtain the scale and corrosion inhibitor.
Example 2
A reverse osmosis membrane scale and corrosion inhibitor for reuse of phosphorus-containing reclaimed water comprises, by mass, 25% of benzylthiosuccinic acid, 14% of a copolymer containing a sulfonic group, 19% of a polyhydroxy carboxylate, 7% of a corrosion inhibitor and 63% of an aqueous solution.
A preparation method of reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises the following steps:
s1, weighing benzylthiosuccinic acid, a copolymer containing sulfonic acid groups, polyhydroxy carboxylate, a corrosion inhibitor and an aqueous solution according to a mass ratio for later use;
s2, uniformly stirring benzylthiosuccinic acid, a copolymer containing sulfonic groups and polyhydroxy carboxylate, standing for 10 minutes, and heating for 12 minutes by using heating equipment at 53 ℃ to obtain an initial agent;
s3, adding the initial agent into a 63% aqueous solution by mass ratio, and stirring for 5min by using a vacuum stirrer to obtain an aqueous solution;
and S4, adding a corrosion inhibitor into the aqueous solution, and stirring for 24min under the regulation of normal temperature to obtain the scale and corrosion inhibitor.
Example 3
A reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises 36% of benzylthiosuccinic acid, 19% of copolymer containing sulfonic groups, 20% of polyhydroxy carboxylate, 7% of corrosion inhibitor and 69% of aqueous solution in percentage by mass.
A preparation method of reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises the following steps:
s1, weighing benzylsulfosuccinic acid, a copolymer containing sulfonic groups, polyhydroxy carboxylate, a corrosion inhibitor and an aqueous solution according to a mass ratio for later use;
s2, uniformly stirring benzylthiosuccinic acid, a copolymer containing sulfonic groups and polyhydroxy carboxylate, standing for 10 minutes, and heating for 15 minutes by using heating equipment at the temperature of 57 ℃ to obtain an initial agent;
s3, adding the initial agent into a 69% aqueous solution by mass, and stirring for 7min by using a vacuum stirrer to obtain an aqueous solution;
and S4, adding a corrosion inhibitor into the aqueous solution, and stirring for 24min under the regulation of normal temperature to obtain the scale and corrosion inhibitor.
Example 4
A reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises 44% of benzylthiosuccinic acid, 25% of copolymer containing sulfonic groups, 22% of polyhydroxy carboxylate, 8% of corrosion inhibitor and 71% of aqueous solution in percentage by mass.
A preparation method of reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises the following steps:
s1, weighing benzylthiosuccinic acid, a copolymer containing sulfonic acid groups, polyhydroxy carboxylate, a corrosion inhibitor and an aqueous solution according to a mass ratio for later use;
s2, uniformly stirring benzylthiosuccinic acid, a copolymer containing sulfonic groups and polyhydroxy carboxylate, standing for 10 minutes, and heating for 17 minutes by using heating equipment at 67 ℃ to obtain an initial agent;
s3, adding the initial agent into 71% aqueous solution by mass, and stirring for 6min by using a vacuum stirrer to obtain aqueous solution;
and S4, adding a corrosion inhibitor into the aqueous solution, and stirring for 22min under the regulation of normal temperature to obtain the scale and corrosion inhibitor.
Example 5
A reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises, by mass, 48% of benzylthiosuccinic acid, 30% of a copolymer containing sulfonic groups, 22% of polyhydroxy carboxylate, 9% of a corrosion inhibitor and 76% of an aqueous solution.
A preparation method of reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises the following steps:
s1, weighing benzylthiosuccinic acid, a copolymer containing sulfonic acid groups, polyhydroxy carboxylate, a corrosion inhibitor and an aqueous solution according to a mass ratio for later use;
s2, uniformly stirring benzylthiosuccinic acid, a copolymer containing sulfonic groups and polyhydroxy carboxylate, standing for 10 minutes, and heating for 19 minutes by using heating equipment at 75 ℃ to obtain an initial agent;
s3, adding the initial agent into a 76% aqueous solution by mass ratio, and stirring for 8min by using a vacuum stirrer to obtain an aqueous solution;
and S4, adding a corrosion inhibitor into the aqueous solution, and stirring for 27min under the regulation of normal temperature to obtain the scale and corrosion inhibitor.
Example 6
A reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises 50% of benzylthiosuccinic acid, 32% of copolymer containing sulfonic groups, 22% of polyhydroxy carboxylate, 10% of corrosion inhibitor and 80% of aqueous solution in percentage by mass.
A preparation method of reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water comprises the following steps:
s1, weighing benzylthiosuccinic acid, a copolymer containing sulfonic acid groups, polyhydroxy carboxylate, a corrosion inhibitor and an aqueous solution according to a mass ratio for later use;
s2, uniformly stirring benzylthiosuccinic acid, a copolymer containing sulfonic groups and polyhydroxy carboxylate, standing for 10 minutes, and heating for 20 minutes by using heating equipment at 90 ℃ to obtain an initial agent;
s3, adding the initial agent into an aqueous solution with the mass ratio of 80%, and stirring for 10min by using a vacuum stirrer to obtain an aqueous solution;
and S4, adding a corrosion inhibitor into the aqueous solution, and stirring for 30min under the regulation of normal temperature to obtain the scale and corrosion inhibitor.
Comparative example 1
The ATMP on the market is selected.
Comparative example 2
And selecting HEDP on the market.
Comparative example 3
Commercially available EDTMPS was selected.
Data testing
Scale inhibition test: the scale inhibition performance is evaluated according to the national standard GB/T16632-2019 calcium carbonate deposition method for measuring the scale inhibition performance of a water treatment agent, namely, a scale and corrosion inhibitor is placed in a clean conical flask, the flask is immersed in a constant-temperature water bath at the temperature of (80 +/-1) ° C (the liquid level of a test solution is not higher than that of the water bath), the flask is placed for 10 hours at constant temperature, 25mL of filtrate is dried and filtered by medium-speed quantitative filter paper while hot, after the filtrate is cooled, the filtrate is weighed and placed in a 250mL conical flask, water is added to about 80mL, 5mL of potassium hydroxide solution and about 0.1g of calcium carboxylic acid indicator are added, the standard titration solution of disodium ethylenediamine tetraacetate is titrated until the solution is changed from purple to bright blue, namely the end point, and the mass concentration of calcium ions in the test solution is calculated according to P = VcM/V.
And (3) corrosion inhibition test: the corrosion rate is calculated by comparing the change of weight of a metal test piece before and after corrosion, an experimental water sample is tap water, the metal test piece is an iron test piece, the experimental temperature is 25 ℃, the experimental time is 48 hours, 9 metal test pieces are taken, weighing record data are taken, 250ml of the experimental water sample is taken, 10mg of scale and corrosion inhibitor is added into the experimental water sample, the 9 metal test pieces are immersed and kept stand for 48 hours in the experimental water sample after being uniformly mixed, the metal test pieces are taken out, the metal test pieces are wiped by absorbent paper and accurately weighed record data are obtained, the weight loss is obtained by the average value of the mass difference of the test pieces before and after reaction, and the weight loss is divided by the weight before reaction to calculate the corrosion inhibition efficiency.
The data in the table show that the scale and corrosion inhibitor in example 1 has the highest scale and corrosion inhibition rate, the scale and corrosion inhibitors in example 4 have the highest corrosion and corrosion inhibition rate, and the effects of the scale and corrosion inhibitors in examples 1-6 are more than 90% compared with the scale and corrosion inhibitors on the market, and in addition, the elements such as phosphorus and the like are not contained in examples 1-6, so that water eutrophication is not caused, pollution caused by random discharge is avoided, and the scale and corrosion inhibitor can be used for protecting the ecological environment.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the specification has been described in terms of embodiments, not every embodiment includes every single embodiment, and such description is for clarity purposes only, and it will be appreciated by those skilled in the art that the specification as a whole can be combined as appropriate to form other embodiments as will be apparent to those skilled in the art.
Claims (10)
1. A reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water is characterized by comprising the following components: benzylthiosuccinic acid, sulfonic acid group-containing copolymer, polyhydroxy carboxylate, corrosion inhibitor and aqueous solution;
wherein the benzylsulfosuccinic acid: sulfonic acid group-containing copolymer: polyhydroxy carboxylic acid salt: corrosion inhibitor: the mass ratio of the aqueous solution is (20-50): (10-32): (18-22): (5-10): (60-80).
2. The reverse osmosis membrane scale and corrosion inhibitor for reuse of phosphorus-containing reclaimed water as claimed in claim 1, wherein the benzylsulfosuccinic acid: sulfonic acid group-containing copolymer: polyhydroxy carboxylic acid salt: corrosion inhibitor: the mass ratio of the aqueous solution is 30:25:20:8:75.
3. the reverse osmosis membrane scale and corrosion inhibitor for phosphorus-containing reclaimed water recycling according to claim 1, wherein the benzylsulfosuccinic acid comprises disodium maleate, benzyl mercaptan and ethanol, the ratio of the disodium maleate: benzyl mercaptan: the mass ratio of the ethanol is (2-10): (1-12): (30-50).
4. The reverse osmosis membrane scale and corrosion inhibitor for phosphorus-containing reclaimed water recycling according to claim 3, wherein the ratio of disodium maleate: benzyl mercaptan: the mass ratio of ethanol is 1:1:8.
5. the reverse osmosis membrane scale and corrosion inhibitor for reuse of phosphorus-containing reclaimed water according to claim 1, wherein the copolymer containing sulfonic groups is a copolymer containing carbonyl olefin and sulfonic group-containing olefin, and the carbonyl-containing olefin is one of acrylic acid, maleic acid and maleic anhydride.
6. The reverse osmosis membrane scale and corrosion inhibitor for reuse of phosphorus-containing reclaimed water according to claim 5, wherein the molar ratio of the sulfonic acid group-containing olefin structural unit is 8-30%, and the weight average molecular weight of the sulfonic acid group-containing copolymer is 1200-52000.
7. The reverse osmosis membrane scale and corrosion inhibitor for reuse of phosphorus-containing reclaimed water as claimed in claim 1, wherein the polyhydroxy carboxylate is one of potassium salt, sodium salt or potassium-sodium double salt of humic acid.
8. The reverse osmosis membrane scale and corrosion inhibitor for reuse of phosphorus-containing reclaimed water according to claim 1, wherein the corrosion inhibitor comprises sodium dodecyl benzene sulfonate and benzotriazole, and the weight ratio of the sodium dodecyl benzene sulfonate to the benzotriazole is (6-13): 1.
9. the reverse osmosis membrane scale and corrosion inhibitor for recycling of phosphorus-containing reclaimed water as claimed in claim 1, wherein the aqueous solution comprises water and non-phosphorus-based salt, and the mass ratio of the water to the non-phosphorus-based salt is (8-9): 2.
10. the preparation method of the reverse osmosis membrane scale and corrosion inhibitor for recycling phosphorus-containing reclaimed water according to any one of claims 1 to 9, characterized by comprising the following steps:
s1, weighing benzylthiosuccinic acid, a copolymer containing sulfonic acid groups, polyhydroxy carboxylate, a corrosion inhibitor and an aqueous solution according to a mass ratio for later use;
s2, uniformly stirring benzylthiosuccinic acid, a copolymer containing sulfonic groups and polyhydroxy carboxylate, standing for 10 minutes, and heating for 10-20 minutes by using heating equipment at the temperature of 50-90 ℃ to obtain an initial agent;
s3, adding the initial agent into an aqueous solution with the mass ratio of 60-80%, and stirring for 5-10min by using a vacuum stirrer to obtain an aqueous solution;
and S4, adding a corrosion inhibitor into the aqueous solution, and stirring for 20-30min under the regulation of normal temperature to obtain the scale and corrosion inhibitor.
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