CN102765819B - Self-draining water recycling process of water circulating system - Google Patents
Self-draining water recycling process of water circulating system Download PDFInfo
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- CN102765819B CN102765819B CN201210249675.0A CN201210249675A CN102765819B CN 102765819 B CN102765819 B CN 102765819B CN 201210249675 A CN201210249675 A CN 201210249675A CN 102765819 B CN102765819 B CN 102765819B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004064 recycling Methods 0.000 title abstract description 8
- 230000007797 corrosion Effects 0.000 claims abstract description 27
- 238000005260 corrosion Methods 0.000 claims abstract description 27
- 239000008234 soft water Substances 0.000 claims abstract description 26
- 239000003112 inhibitor Substances 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 claims description 10
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 10
- 239000011701 zinc Substances 0.000 claims description 10
- 229910052725 zinc Inorganic materials 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- 239000003352 sequestering agent Substances 0.000 claims description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- -1 bi-imidazoline quaternary ammonium salt Chemical class 0.000 claims description 8
- 239000011964 heteropoly acid Substances 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- 229920000592 inorganic polymer Polymers 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 5
- 238000000909 electrodialysis Methods 0.000 claims description 5
- 229910000073 phosphorus hydride Inorganic materials 0.000 claims description 5
- 150000003751 zinc Chemical class 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 239000003002 pH adjusting agent Substances 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- WKVMOQXBMPYPGK-UHFFFAOYSA-N 2-[bis(carboxymethyl)amino]acetic acid;sodium Chemical group [Na].OC(=O)CN(CC(O)=O)CC(O)=O WKVMOQXBMPYPGK-UHFFFAOYSA-N 0.000 claims description 3
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 3
- 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 claims description 3
- 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 claims description 3
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 3
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- MSYZZDUCMHNXNY-UHFFFAOYSA-N molybdenum;phosphane Chemical compound P.[Mo] MSYZZDUCMHNXNY-UHFFFAOYSA-N 0.000 claims description 3
- DCEMCPAKSGRHCN-UHFFFAOYSA-N oxirane-2,3-dicarboxylic acid Chemical compound OC(=O)C1OC1C(O)=O DCEMCPAKSGRHCN-UHFFFAOYSA-N 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 239000004584 polyacrylic acid Substances 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000001648 tannin Substances 0.000 claims description 3
- 235000018553 tannin Nutrition 0.000 claims description 3
- 229920001864 tannin Polymers 0.000 claims description 3
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 claims description 3
- JSYPRLVDJYQMAI-ODZAUARKSA-N (z)-but-2-enedioic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)\C=C/C(O)=O JSYPRLVDJYQMAI-ODZAUARKSA-N 0.000 claims description 2
- WGJCBBASTRWVJL-UHFFFAOYSA-N 1,3-thiazolidine-2-thione Chemical compound SC1=NCCS1 WGJCBBASTRWVJL-UHFFFAOYSA-N 0.000 claims description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N 1H-imidazole Chemical compound C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 2
- KFJDQPJLANOOOB-UHFFFAOYSA-N 2h-benzotriazole-4-carboxylic acid Chemical compound OC(=O)C1=CC=CC2=NNN=C12 KFJDQPJLANOOOB-UHFFFAOYSA-N 0.000 claims description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 2
- SYMAIKWDBCFRMP-UHFFFAOYSA-N C(C=C)(=O)O.C(C=C)(=O)OCCCO.C(C=C)(=O)O Chemical compound C(C=C)(=O)O.C(C=C)(=O)OCCCO.C(C=C)(=O)O SYMAIKWDBCFRMP-UHFFFAOYSA-N 0.000 claims description 2
- RZXLPPRPEOUENN-UHFFFAOYSA-N Chlorfenson Chemical compound C1=CC(Cl)=CC=C1OS(=O)(=O)C1=CC=C(Cl)C=C1 RZXLPPRPEOUENN-UHFFFAOYSA-N 0.000 claims description 2
- UILQOQPESZMGDD-UHFFFAOYSA-N N1=CC=CC2=CC=CC=C12.CC=1N=CNC1 Chemical compound N1=CC=CC2=CC=CC=C12.CC=1N=CNC1 UILQOQPESZMGDD-UHFFFAOYSA-N 0.000 claims description 2
- 229920000805 Polyaspartic acid Polymers 0.000 claims description 2
- ABBQHOQBGMUPJH-UHFFFAOYSA-M Sodium salicylate Chemical compound [Na+].OC1=CC=CC=C1C([O-])=O ABBQHOQBGMUPJH-UHFFFAOYSA-M 0.000 claims description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 125000003342 alkenyl group Chemical group 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 claims description 2
- WPUMTJGUQUYPIV-JIZZDEOASA-L disodium (S)-malate Chemical compound [Na+].[Na+].[O-]C(=O)[C@@H](O)CC([O-])=O WPUMTJGUQUYPIV-JIZZDEOASA-L 0.000 claims description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical compound OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 claims description 2
- AMWVZPDSWLOFKA-UHFFFAOYSA-N phosphanylidynemolybdenum Chemical compound [Mo]#P AMWVZPDSWLOFKA-UHFFFAOYSA-N 0.000 claims description 2
- 108010064470 polyaspartate Proteins 0.000 claims description 2
- 229920001444 polymaleic acid Polymers 0.000 claims description 2
- 235000019265 sodium DL-malate Nutrition 0.000 claims description 2
- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical group [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 claims description 2
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims description 2
- 239000004299 sodium benzoate Substances 0.000 claims description 2
- 235000010234 sodium benzoate Nutrition 0.000 claims description 2
- 229960003885 sodium benzoate Drugs 0.000 claims description 2
- 239000001509 sodium citrate Substances 0.000 claims description 2
- 239000001394 sodium malate Substances 0.000 claims description 2
- 229960004025 sodium salicylate Drugs 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 239000001433 sodium tartrate Substances 0.000 claims description 2
- 229960002167 sodium tartrate Drugs 0.000 claims description 2
- 235000011004 sodium tartrates Nutrition 0.000 claims description 2
- MSXHSNHNTORCAW-GGLLEASOSA-M sodium;(2s,3s,4s,5r,6s)-3,4,5,6-tetrahydroxyoxane-2-carboxylate Chemical compound [Na+].O[C@H]1O[C@H](C([O-])=O)[C@@H](O)[C@H](O)[C@H]1O MSXHSNHNTORCAW-GGLLEASOSA-M 0.000 claims description 2
- ZTYOEHTVHXWFJT-YDALLXLXSA-M sodium;(4s)-4-[[4-[(2-amino-4-oxo-1h-pteridin-6-yl)methylamino]benzoyl]amino]-5-hydroxy-5-oxopentanoate Chemical compound [Na+].C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)N[C@@H](CCC(O)=O)C([O-])=O)C=C1 ZTYOEHTVHXWFJT-YDALLXLXSA-M 0.000 claims description 2
- WUWHFEHKUQVYLF-UHFFFAOYSA-M sodium;2-aminoacetate Chemical compound [Na+].NCC([O-])=O WUWHFEHKUQVYLF-UHFFFAOYSA-M 0.000 claims description 2
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 claims description 2
- 229940038773 trisodium citrate Drugs 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011575 calcium Substances 0.000 abstract description 4
- 229910052791 calcium Inorganic materials 0.000 abstract description 4
- 239000013505 freshwater Substances 0.000 abstract description 4
- 230000002829 reductive effect Effects 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 4
- 239000003814 drug Substances 0.000 abstract description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011777 magnesium Substances 0.000 abstract description 2
- 229910052749 magnesium Inorganic materials 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 229940079593 drug Drugs 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 description 11
- 238000010612 desalination reaction Methods 0.000 description 8
- 238000011033 desalting Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-L L-tartrate(2-) Chemical compound [O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O FEWJPZIEWOKRBE-JCYAYHJZSA-L 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- OVBPIULPVIDEAO-LBPRGKRZSA-N folic acid Chemical compound C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)N[C@@H](CCC(O)=O)C(O)=O)C=C1 OVBPIULPVIDEAO-LBPRGKRZSA-N 0.000 description 2
- 229950006191 gluconic acid Drugs 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229940095064 tartrate Drugs 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- OVBPIULPVIDEAO-UHFFFAOYSA-N N-Pteroyl-L-glutaminsaeure Natural products C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)NC(CCC(O)=O)C(O)=O)C=C1 OVBPIULPVIDEAO-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- CUBCNYWQJHBXIY-UHFFFAOYSA-N benzoic acid;2-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=CC=C1.OC(=O)C1=CC=CC=C1O CUBCNYWQJHBXIY-UHFFFAOYSA-N 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011724 folic acid Substances 0.000 description 1
- 229960000304 folic acid Drugs 0.000 description 1
- 235000019152 folic acid Nutrition 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- KRXWRLHWTAHWJN-UHFFFAOYSA-N phosphane;zinc Chemical compound P.[Zn] KRXWRLHWTAHWJN-UHFFFAOYSA-N 0.000 description 1
- DHRLEVQXOMLTIM-UHFFFAOYSA-N phosphoric acid;trioxomolybdenum Chemical compound O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.OP(O)(O)=O DHRLEVQXOMLTIM-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 235000019600 saltiness Nutrition 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 235000019263 trisodium citrate Nutrition 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Abstract
The invention provides a self-draining water recycling process of a water circulating system. The self-draining water recycling process comprises the steps of mixing soft water corrosion inhibitor and self-draining water for complete contact and reaction; settling a mixture of the soft water corrosion inhibitor and the self-draining water to obtain soft water and sludge containing calcium and magnesium; removing the basicity of the soft water; filtering the soft water without basicity; removing salinity of the filtered soft water, and then rejecting the filtered water without salinity into the water circulating system. According to the self-draining water recycling process, due to the scientific processing process, the recycled self-draining water of the water circulating system conforms to the requirement of the quality of circulating water, and the stable and safety operation of the water circulating system can be ensured. The recycling rate of the self-draining water of the water circulating system, which is processed by the self-draining water recycling process of the water circulating system, is more than 75%, the corrosion rate of the water circulating system is reduced by 30%-50%, the sewage discharging amount is reduced by more than 80%, 20%-40% of fresh water using amount is saved, and 30%-50% of drug is saved.
Description
Technical field
The present invention relates to energy-conserving and emission-cutting technology field, particularly relate to a kind of circulating water system from draining reuse technology.
Background technology
Shortage of water resources and water pollution problems have become the significant problem of restriction human social economy Sustainable development.The industries such as petrochemical complex, iron and steel, electric power are with water and draining rich and influential family, implement the important measures that sewage recycling is these industry water-saving and emission-reducings, also be the necessary trend of water treatment field development, to industry sustainable and healthy development, ensure that Water resources security is significant.
In recirculated water operational process, in order to ensure the water quality of recirculated water, need draining, moisturizing displacement.Because the self-draining water quality of circulating water system is consistent with recirculated water, turbidity and organic content low, harmful ion content is low, and pollutant kind is few, and water quality is more clean.Just after concentration, high from draining hardness, basicity, saltiness is comparatively large, and containing a small amount of water treatment agent, therefore recoverable is worth high.Generally, be back to use in circulating water system again after caning be passed through the process of the softening desalination such as membrane technology, ion exchange resin and go.But current reuse effect is not ideal, ubiquity the problems such as technique imperfection, equipment life is short, water quality inferiority, running cost are high.
Summary of the invention
The object of the present invention is to provide a kind of circulating water system from draining reuse technology, to solve technique imperfection, equipment life that prior art exists short, the problem such as water quality inferiority, running cost are high.
To achieve these goals, circulating water system provided by the invention comprises the following steps from draining reuse technology: by soft water inhibiter with from the abundant mixing and contacting reaction of draining; Sedimentation soft water inhibiter and self-draining mixture, obtain the body refuse of hard-off degree water and calcium-magnesium-containing; The basicity of removing hard-off degree water; Cross the hard-off degree water filtering basicity; Salt in hard-off degree water after removing filtration, is then recycled into circulating water system.
From upper analysis, the present invention, by the treatment process of science, can make reuse circulating water system meet circulating water quality requirement from draining, ensures the steady safe operation of circulating water system.
Embodiment
According to embodiment, the present invention is described in further details below.
The invention provides a kind of circulating water system from draining reuse technology, during enforcement, need to relate to multinomial equipment, comprise line mixer, reactor, settling tank, multi-functional fine filter, electrodialytic desalting equipment and regulate and distribute device.Basic step is: circulating water system enters line mixer from draining through pump or system pressure, adds soft water inhibiter and mixes; Then the mixture of the two enters reactor, enters settling tank by reactor outlet; Enter clean water basin by settling tank overflow, filter through fine filter and enter electrodialytic desalting equipment, after desalination, be back to use circulating water system.Wherein, regulate and distribute device can according to the conductivity adjustment of system from drainage sunk well amount, reuse circulating water system from the ratio of desalinization of drain treatment apparatus.
Wherein, circulating water system is from draining after circulating water system is discharged, and the dosage adding soft water inhibiter is that 50 ~ 500 mg/ rise from draining, and preferable amount is that 150 ~ 300 mg/ rise from draining, soft water inhibiter and sewer hybrid reaction time are 10 ~ 60min, and the preferred reaction time is 20 ~ 40min.Preferably, soft water inhibiter comprises sequestrant, precipitation agent, inhibiter and pH adjusting agent.Sequestrant is one of them or wherein multiple mixture of nitrilotriacetic acid sodium, aminodiacetic acid sodium, disodium ethylene diamine tetraacetate.Precipitation agent is one of them or wherein multiple mixture of polyacrylamide, Walocel MT 20.000PV, Sodium glycocollate.Inhibiter is one of them or wherein multiple mixture of 2-tetrahydroglyoxaline, bi-imidazoline quaternary ammonium salt, 4-methylimidazole quinoline, 17 alkenyl amine ethyl imidazol(e) hyamines.PH adjusting agent is one of them or wherein multiple mixture of sodium carbonate, sodium hydroxide, calcium hydroxide.During proportioning soft water inhibiter, according to the difference of the component such as hardness ions, basicity ion distribution in sewer, the proportioning of sequestrant, precipitation agent, inhibiter is corresponding with consumption also different, when hydrocarbonate content is lower, when hardness content is higher, the consumption of suitable increase sequestrant, precipitation agent, can obtain good bating effect.Owing to the addition of tetrahydroglyoxaline series inhibiter component in sequestrant, greatly reduce the corrodibility of sequestrant to relevant device in use, transport, storage.
Circulating water system after mixing enters reactor from draining through motorized valve, under meter, and the reaction times is preferably 10 ~ 60min, and further preferably, the reaction times controls at 20 ~ 40min.
Reacted circulating water system enters settling tank from draining, and the settling time is preferably 10 ~ 150min, and the preferred settling time is 60 ~ 120min further.
Settling tank water outlet is through acid adding, and such as sulfuric acid, after regulating basicity, enters multi-functional filter through tank.Water in clean water basin enters fine filter through high-pressure pump, the insolubles in filtered water.
The water outlet of fine filter enters electrodialytic desalting equipment, carries out desalting treatment.
Adopt the ratio regulating and distributing the device adjustment self-draining treatment capacity of circulating water system and recirculated water internal circulating load to be 1:100 ~ 1:1100, preferred ratio is 1:200 ~ 1:800, and the ratio of desalinization controlling above-mentioned treatment unit is 30% ~ 90%, and preferred ratio of desalinization is 50% ~ 90%.
Further, adopt the circulating water system corrosion caused from draining reuse from draining reuse anti-incrustation corrosion inhibitor controlled circulation water system, be that 10min ~ 100 mg/ rises recirculated water from draining reuse anti-incrustation corrosion inhibitor consumption, preferable amount is that 60mg ~ 90 mg/ rises recirculated water.Preferably, of the present inventionly to comprise containing phosphine heteropolyacid zinc salt inorganic polymer inhibiter, multi-hydroxy carboxy acid's salt organic inhibitor, Azole Corrosion Inhibitors and dirt dispersion agent from draining reuse anti-incrustation corrosion inhibitor.Containing one of them or wherein multiple mixture that phosphine zinc heteropolyacid salt inorganic polymer inhibiter is phosphato-molybdic heteropolyacid, phosphorus heteropoly tungstic acid, organic phosphine molybdenum heteroacid, organophosphono-heteropolytungstic acid, phosphorus molybdenum heteroacid zinc, phosphorus heteropoly tungstic acid zinc, organic phosphine molybdenum heteroacid zinc, organic tungsten heteropolyacid zinc.Multi-hydroxy carboxy acid's salt organic inhibitor is one of them or wherein multiple mixture of tartrate, citric acid, Whitfield's ointment, phenylformic acid, oxysuccinic acid, glyconic acid, folic acid, tannin, sodium tartrate, Trisodium Citrate, sodium salicylate, Sodium Benzoate, sodium malate, gluconic acid sodium salt, folic acid sodium salt, tannin sodium salt.Azole Corrosion Inhibitors is one of them or wherein multiple mixture of benzotriazole, methyl benzotriazazole, thyroidan, carboxy benzotriazole.Dirt dispersion agent is one of them or wherein multiple mixture of polyacrylic acid, polymaleic acid, poly-aspartic-acid, poly-epoxy succinic acid, maleic acid-acrylic acid copolymer, vinylformic acid-2-acrylamide-2-methyl propane sulfonic multipolymer, acrylic acid-acrylic ester-sulfonate, acrylic acid-acrylic acid hydroxypropyl acrylate.
The corrosive ion such as fouling tendency ion and sodium, potassium, chlorine, sulfate radical such as hardness ions, basicity ion of circulating water system containing high density in draining.These ions result in fouling and the etching problem of circulating water system.In softening-demineralising process, circulating water system adds soft water inhibiter in draining, sequestrant (its metalloid core ion has empty 3d track) wherein and hardness ions generation chelatropic reaction, pH value regulator regulates water pH value to promote that chelatropic reaction carries out in alkalescence.In settling process, the inner complex particle accumulation that the precipitation agent in soft water inhibiter is tiny by dispersion becomes larger granule thus accelerates the settling velocity of inner complex particle.That removes the hardness ions such as most of calcium, magnesium in water.In settling process, due to the continuity distribution character of settling particle particle diameter, more tiny particle precipitation is comparatively slow, and stable suspersion, in softening water, is removed by multi-functional filter, and residual basicity ion is removed by sulfuric acid reaction.Softening water after process filters further through fine filter, and enter electrodialysis appts and carry out desalination, the de-salted water after desalination is back to use circulating system.
Therebetween, the circulating water system corrosion caused from draining reuse anti-incrustation corrosion inhibitor control of sewage disposal Water circulation is adopted; Adopt and regulate and distribute the ratio that device regulates the self-draining quantity discharged of recirculated water and recirculated water internal circulating load, control ratio of desalinization.Organic compound major part is by softening-desalting system, be removed on a small quantity, and exist in polymer form containing phosphine heteropolyacid zinc salt inorganic polymer inhibiter, softening-salt-removal steps is to phosphorus, tungsten, zinc three kinds of components to remove ratio completely the same, be conducive to reusing and stability contorting of recirculated water Chinese medicine, containing phosphine heteropolyacid zinc salt inorganic polymer inhibiter, multi-hydroxy carboxy acid's salt organic inhibitor, the Synergistic inhibition of Azole Corrosion Inhibitors, Combination protective membrane can be formed in metallic surface, there is excellent corrosion mitigating effect, effectively can prevent aqueous corrosion, inhibiting point corrosion and strong brine corrosion.The conductance of producing water and recirculated water is detected by the conductivity meter regulating and distributing device, according to circulation electrical conductivity of water, produce water conductivity, water circulation control circulating water system from the size of drainage sunk well amount, circulating water system from the ratio of desalinization of draining recycling and processing equipment, make circulating water system basic consistent with moisturizing from draining specific conductivity, meet the operation standard of recirculated water.
When applying the present invention to a concrete situation, can following steps be adopted:
1, by system sewerage (its character is as table 1) and soft water inhibiter sodium carbonate, the sodium hydroxide of 60%, the Walocel MT 20.000PV of 5% of 10% (the nitrilotriacetic acid sodium of 10%, the 2-tetrahydroglyoxaline of 15%) pre-mixing, soft water inhibiter add-on is that 150mg/ rises from draining.
2, after line mixer fully stirs, react after 30 minutes in retort, gravity natural subsidence 1 hour in settling tank, can certainly by other industrial sedimentation utility appliance, and inner complex body refuse falls to bottom settling tank.In other embodiments, soft water inhibiter mixes with sewer and also can mix in stirred pot, line mixer or other commercial mixing apparatus.
3, settling tank top clear liquor filters through multi-functional filter, adds sulfuric acid removing basicity, entering electrodialytic desalting equipment, being then back to use circulating water system through regulating and distributing device.When filtering, batch filtration can be adopted, continous way is filtered, other mode such as aided filter means and combination thereof.The mediation of softening-de-salted water and recirculated water can be carried out in stirred pot, line mixer or other commercial mixing apparatus.
4, adopt and regulate and distribute device and regulate the quantity discharged of Wastewater Form Circulating Cooling Water and the ratio of recirculated water internal circulating load to be 1:500, regulate the ratio of desalinization of above-mentioned treatment unit to be 87%.
5, add in recirculated water from draining reuse anti-incrustation corrosion inhibitor (phospho-wolframic acid zinc: 15%; Tartrate: 20%; Methyl benzotriazazole: 3%; Polyacrylic acid: 40%; Water: 22%), anti-incrustation corrosion inhibitor can adopt impact type, continous way adds or adopt other power-equipment and mixing dosing method to add circulating water system.
Table 1: water quality before and after softening-desalination
| Index name | Sewer | Softening desalination water |
| Hardness | 860 | 40 |
| Basicity | 592 | 0 |
| Calcium | 625 | 25 |
| Conductance | 2200 | 335 |
| Chlorine root | 90 | 14 |
| Sulfate radical | 100 | 29 |
When applying the present invention to another concrete situation, can following steps be adopted:
1, by system sewerage (its character is as table 2) and soft water inhibiter sodium carbonate, the sodium hydroxide of 30%, the polyacrylamide of 4% of 30% (disodium ethylene diamine tetraacetate of 20%, the bi-imidazoline quaternary ammonium salt of 16%) pre-mixing, soft water inhibiter add-on is 200mg/ liter.
2, after line mixer fully stirs, react after 40 minutes in retort, gravity natural subsidence 1.5 hours in settling tank, inner complex body refuse falls to bottom settling tank.
3, settling tank top clear liquor is after multi-functional device of worrying too much filters, and after adding sulfuric acid removing basicity, entering electrodialytic desalting, being then back to use circulating water system through regulating and distributing device.
4, adopt the ratio regulating and distributing the device adjustment self-draining treatment capacity of circulating water system and recirculated water internal circulating load to be 1:650, regulate the ratio of desalinization of above-mentioned treatment unit to be 80%.
5, add in recirculated water from draining reuse anti-incrustation corrosion inhibitor (phospho-molybdic acid zinc: 20%; Gluconic acid: 20%; Benzotriazole: 2%; Poly-epoxy succinic acid: 35%; Water: 23%),
Table 2: water quality before and after softening-desalination
| Index name | Sewer | Softening desalination water |
| Hardness | 647 | 38 |
| Basicity | 425 | 0 |
| Calcium | 429 | 20 |
| Conductance | 1850 | 462 |
| Chlorine root | 134 | 35 |
| Sulfate radical | 113 | 34 |
In sum, when applying the reusing sewage after process of the present invention to circulating water system, the fresh water of 20% ~ 40% can be replaced, reduce by the blowdown of more than 80%, reduce circulating water system erosion rate 30% ~ 50%, save anti-incrustation corrosion inhibitor medicament 30% ~ 50%.Visible, present invention process is simple, reduced investment, process cost are low.Application the present invention, only need, by a small amount of equipment, just can utilize simple method that Substitute For Partial fresh water after reuse after Circulating water effluent Water warfare is back to use circulating water system.The magnitude of recruitment of fresh water can be reduced, reduce quantity of wastewater effluent, save the working cost of circulating water system, realize economic benefit, social benefit optimization.
As known by the technical knowledge, the present invention can be realized by other the embodiment not departing from its spirit or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Within the scope of the present invention all or be all included in the invention being equal to the change in scope of the present invention.
Claims (5)
1. circulating water system is from a draining reuse technology, it is characterized in that comprising the steps:
Soft water inhibiter with from draining through line mixer, the abundant mixing and contacting reaction of retort;
The sedimentation in settling bowl of said mixture material, obtain hard-off degree water on settling bowl upper strata, lower floor isolates the body refuse of calcium-magnesium-containing;
Fully contact, to remove basicity with above-mentioned hard-off degree water with sulfuric acid;
Adopt filter plant except the middle suspended substance that anhydrates;
Adopt salt in electrodialysis appts process water, be then recycled into circulating water system;
Adopt and regulate and distribute the ratio that device regulates the self-draining quantity discharged of circulating water system and recirculated water internal circulating load, control the ratio of desalinization of electrodialysis appts;
Adopt the circulating water system corrosion that special anti-incrustation corrosion inhibitor controls to cause from draining reuse, described soft water inhibiter consumption is that 50mg ~ 500mg/ rises from draining, described soft water inhibiter be 10min ~ 60min from the draining hybrid reaction time, the settling time is 10min ~ 150min; Described special anti-incrustation corrosion inhibitor consumption is that 10mg ~ 100mg/ rises recirculated water; The described device that regulates and distributes regulates the ratio of the self-draining quantity discharged of circulating water system and recirculated water internal circulating load to be 1:100 ~ 1:1100, and the ratio of desalinization regulating electrodialysis appts is 30% ~ 90%;
Described soft water inhibiter is made up of sequestrant, precipitation agent, inhibiter and pH adjusting agent, described sequestrant is nitrilotriacetic acid sodium, aminodiacetic acid sodium, disodium ethylene diamine tetraacetate or its mixture, described precipitation agent is polyacrylamide, Walocel MT 20.000PV, Sodium glycocollate or its mixture, described inhibiter is 2-tetrahydroglyoxaline, bi-imidazoline quaternary ammonium salt, 4-methylimidazole quinoline, 17 alkenyl amine ethyl imidazol(e) hyamines or its mixture, and described pH adjusting agent is sodium carbonate, sodium hydroxide, calcium hydroxide or its mixture;
Described special anti-incrustation corrosion inhibitor is by containing phosphine heteropolyacid zinc salt inorganic polymer inhibiter, multi-hydroxy carboxy acid's salt organic inhibitor, Azole Corrosion Inhibitors and dirt dispersion agent composition, described is phosphorus molybdenum heteroacid zinc containing phosphine heteropolyacid zinc salt inorganic polymer inhibiter, phosphorus heteropoly tungstic acid zinc, organic phosphine molybdenum heteroacid zinc or its mixture, described multi-hydroxy carboxy acid's salt organic inhibitor is sodium tartrate, Trisodium Citrate, sodium salicylate, Sodium Benzoate, sodium malate, gluconic acid sodium salt, folic acid sodium salt, tannin sodium salt or its mixture, described Azole Corrosion Inhibitors is benzotriazole, methyl benzotriazazole, thyroidan, carboxy benzotriazole or its mixture, described dirt dispersion agent is polyacrylic acid, polymaleic acid, poly-aspartic-acid, poly-epoxy succinic acid, maleic acid-acrylic acid copolymer, vinylformic acid-2-acrylamide-2-methyl propane sulfonic multipolymer, acrylic acid-acrylic ester-sulfonate, acrylic acid-acrylic acid hydroxypropyl acrylate or its mixture.
2. circulating water system according to claim 1 is from draining reuse technology, it is characterized in that:
Described soft water inhibiter be 20min ~ 40min from the draining hybrid reaction time; Settling time is 60min ~ 120min.
3. circulating water system according to claim 1 is from draining reuse technology, it is characterized in that:
Described soft water inhibiter consumption is that 150mg ~ 300mg/ rises from draining.
4. circulating water system according to claim 1 is from draining reuse technology, it is characterized in that:
Described special anti-incrustation corrosion inhibitor consumption is that 60mg ~ 90mg/ rises recirculated water.
5. circulating water system according to claim 1 is from draining reuse technology, it is characterized in that:
The described device that regulates and distributes regulates the ratio of the self-draining quantity discharged of circulating water system and recirculated water internal circulating load to be 1:200 ~ 1:800; The ratio of desalinization regulating electrodialysis appts is 50% ~ 90%.
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| CN103130359A (en) * | 2013-03-21 | 2013-06-05 | 柳州市盛鹏源环保科技有限公司 | Corrosion and scale inhibition method for soft water closed circulation system |
| CN103359839A (en) * | 2013-07-22 | 2013-10-23 | 首钢总公司 | High temperature resistant scale inhibitor for blast-furnace slag flushing water system |
| CN104628162B (en) * | 2013-11-11 | 2017-01-11 | 中国石油化工股份有限公司 | Biological slime stripping agent and method for stripping biological slime in circulating cooling water system |
| CN104528961A (en) * | 2014-12-29 | 2015-04-22 | 江苏健神生物农化有限公司 | Scale and corrosion inhibitor for oilfield reinjection water and preparation method thereof |
| CN109422356A (en) * | 2017-08-29 | 2019-03-05 | 中国石油化工股份有限公司 | Circulating cooling water containing sulfur composition for treating and its application |
| CN107698045A (en) * | 2017-09-27 | 2018-02-16 | 张艳军 | A kind of recirculated water water saving scale remover |
| CN114262072A (en) * | 2019-01-31 | 2022-04-01 | 陈建华 | Self-adaptive hardness-reducing type ash water scale inhibition and dispersion agent for coal gasification black ash water and application |
| CN112340923A (en) * | 2020-09-08 | 2021-02-09 | 大唐长山热电厂 | Treatment system and treatment method for circulating cooling water of power plant |
| CN114684930A (en) * | 2020-12-31 | 2022-07-01 | 中国石油化工股份有限公司 | Wastewater hardness removal agent and method for removing hardness in wastewater by using same |
| CN115140850A (en) * | 2022-07-01 | 2022-10-04 | 北京恒动环境技术有限公司 | Circulating cooling water descaling system and method |
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