CN111689589A - Sewage treatment agent - Google Patents
Sewage treatment agent Download PDFInfo
- Publication number
- CN111689589A CN111689589A CN202010467150.9A CN202010467150A CN111689589A CN 111689589 A CN111689589 A CN 111689589A CN 202010467150 A CN202010467150 A CN 202010467150A CN 111689589 A CN111689589 A CN 111689589A
- Authority
- CN
- China
- Prior art keywords
- citric acid
- treatment agent
- modified sisal
- sewage treatment
- sisal fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000010865 sewage Substances 0.000 title claims abstract description 47
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 243
- 244000198134 Agave sisalana Species 0.000 claims abstract description 121
- 239000000835 fiber Substances 0.000 claims abstract description 121
- 229920001661 Chitosan Polymers 0.000 claims abstract description 60
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 54
- 239000004005 microsphere Substances 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910001868 water Inorganic materials 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 23
- 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 claims abstract description 18
- 229920002472 Starch Polymers 0.000 claims abstract description 17
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000008107 starch Substances 0.000 claims abstract description 17
- 235000019698 starch Nutrition 0.000 claims abstract description 17
- 239000012991 xanthate Substances 0.000 claims abstract description 17
- 239000002253 acid Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 239000007864 aqueous solution Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 17
- 230000004913 activation Effects 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 238000004108 freeze drying Methods 0.000 claims description 14
- 239000000017 hydrogel Substances 0.000 claims description 14
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 14
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 14
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical group FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 claims description 12
- 229910001379 sodium hypophosphite Inorganic materials 0.000 claims description 12
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 10
- FPQQSJJWHUJYPU-UHFFFAOYSA-N 3-(dimethylamino)propyliminomethylidene-ethylazanium;chloride Chemical group Cl.CCN=C=NCCCN(C)C FPQQSJJWHUJYPU-UHFFFAOYSA-N 0.000 claims description 9
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- NQTADLQHYWFPDB-UHFFFAOYSA-N N-Hydroxysuccinimide Chemical compound ON1C(=O)CCC1=O NQTADLQHYWFPDB-UHFFFAOYSA-N 0.000 claims description 7
- 230000003213 activating effect Effects 0.000 claims description 7
- 230000032683 aging Effects 0.000 claims description 7
- 238000004132 cross linking Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 239000004310 lactic acid Substances 0.000 claims description 7
- 235000014655 lactic acid Nutrition 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 230000004048 modification Effects 0.000 claims description 7
- 238000012986 modification Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 238000004065 wastewater treatment Methods 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 6
- 108010052780 polyasparagine Proteins 0.000 claims description 6
- 108010094020 polyglycine Proteins 0.000 claims description 6
- 229920000232 polyglycine polymer Polymers 0.000 claims description 6
- SJZRECIVHVDYJC-UHFFFAOYSA-N 4-hydroxybutyric acid Chemical compound OCCCC(O)=O SJZRECIVHVDYJC-UHFFFAOYSA-N 0.000 claims description 5
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 5
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 5
- 229960004889 salicylic acid Drugs 0.000 claims description 5
- 239000011975 tartaric acid Substances 0.000 claims description 5
- 235000002906 tartaric acid Nutrition 0.000 claims description 5
- 108010020346 Polyglutamic Acid Proteins 0.000 claims description 4
- 229920002643 polyglutamic acid Polymers 0.000 claims description 4
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 8
- 230000005764 inhibitory process Effects 0.000 abstract description 7
- 229910021645 metal ion Inorganic materials 0.000 abstract description 5
- 230000002829 reductive effect Effects 0.000 abstract description 4
- 238000013329 compounding Methods 0.000 abstract description 2
- 230000002209 hydrophobic effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 150000001735 carboxylic acids Chemical class 0.000 abstract 2
- 229910001385 heavy metal Inorganic materials 0.000 description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal 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
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- -1 carboxylate ions Chemical class 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 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 2
- 241000894006 Bacteria Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- C02F5/14—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 containing phosphorus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
- B01J20/28021—Hollow particles, e.g. hollow spheres, microspheres or cenospheres
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/206—Manganese or manganese compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a sewage treatment agent, which comprises the following raw materials: organic carboxylic acid, modified sisal fiber porous microspheres, polyamino acid, starch xanthate and amino trimethylene phosphonic acid; the preparation method of the sewage treatment agent comprises the following steps: preparing modified sisal fiber porous microspheres; adding organic carboxylic acid and polyamino acid into the citric acid modified sisal fiber cross-linked chitosan porous microspheres, fully mixing uniformly, adding starch xanthate and amino trimethylene phosphonic acid, and fully mixing uniformly again to obtain a sewage treatment agent; the sewage treatment agent disclosed by the invention can capture various metal ions in a water body by compounding the raw materials and exerting a synergistic effect, and also has obvious corrosion and scale inhibition effects, so that the scaling and corrosion of a system can be effectively reduced, and the production cost is reduced; the treated sewage can reach the discharge standard, and the floc strength is high and the hydrophobic property is good; the treated water has no secondary pollution and other problems.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment agent.
Background
China is a country with shortage of water resources, and the water resources are distributed seriously unevenly, so that the problem of how to relieve the problems of water resource shortage, pollution and the like becomes an unbearable problem. In order to solve the problem of water shortage, pollution control is gradually one of the basic principles that China must insist for a long time except for source-opening throttling and comprehensive utilization.
At present, the methods for treating heavy metal wastewater are commonly classified into three types: the first kind is a method for removing heavy metal ions in the wastewater by chemical reaction, which comprises a neutralization precipitation method, a sulfide precipitation method, a ferrite coprecipitation method, a chemical reduction method, an electrochemical reduction method, a high-molecular heavy metal collector method and the like; the second type is a method for adsorbing, concentrating and separating heavy metals in wastewater under the condition of not changing the chemical forms of the heavy metals, and comprises adsorption, solvent extraction, evaporation and solidification, ion exchange, membrane separation and the like. The third category is a method for removing heavy metals in wastewater by the flocculation, absorption, accumulation, enrichment and the like of microorganisms or plants, wherein the method comprises biological flocculation, biochemical methods, plant ecological restoration and the like.
However, the existing heavy metal wastewater treatment agent has some problems, such as high treatment cost, secondary pollution, poor treatment effect and the like.
Disclosure of Invention
The invention aims to provide a sewage treatment agent, which solves the problems of high treatment cost, secondary pollution and poor treatment effect of heavy metal wastewater treatment agents in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
on one hand, the invention provides a sewage treatment agent, which comprises the following raw materials in parts by weight: 5-10 parts of organic carboxylic acid, 20-30 parts of modified sisal fiber porous microspheres, 5-10 parts of polyamino acid, 5-10 parts of starch xanthate and 1-5 parts of amino trimethylene phosphonic acid.
Further, the modified sisal fiber porous microspheres are citric acid modified sisal fiber crosslinked chitosan porous microspheres obtained by carrying out citric acid modification, activating agent activation and chitosan crosslinking on sisal fibers.
Further, the organic carboxylic acid is one or more of lactic acid, hydroxybutyric acid, salicylic acid and tartaric acid.
Further, the polyamino acid is polyglycine, polyasparagine or polyglutamic acid.
In another aspect, the present invention provides a method for preparing a wastewater treatment agent, comprising:
preparing modified sisal fiber porous microspheres:
dissolving sisal fibers in citric acid, adding a catalyst, carrying out hydrothermal reaction in a high-pressure kettle, centrifuging after the reaction is finished, taking a lower-layer precipitate, washing and drying to obtain citric acid modified sisal fibers;
dissolving the citric acid modified sisal fibers in water, and then adding an activating agent for activation to obtain an activated citric acid modified sisal fiber aqueous solution;
adding the activated citric acid modified sisal fiber aqueous solution into a chitosan aqueous solution, uniformly stirring, standing and aging to obtain citric acid modified sisal fiber crosslinked chitosan hydrogel;
freeze-drying the citric acid modified sisal fiber cross-linked chitosan hydrogel to obtain citric acid modified sisal fiber cross-linked chitosan porous microspheres;
mixing: and adding organic carboxylic acid and polyamino acid into the citric acid modified sisal fiber crosslinked chitosan porous microspheres, fully mixing uniformly, adding starch xanthate and amino trimethylene phosphonic acid, and fully mixing uniformly again to obtain the sewage treatment agent.
Further, the mole ratio of the sisal fibers to the citric acid to the catalyst is 1: 4-8: 0.01-0.2; the catalyst is sodium hypophosphite.
Furthermore, the hydrothermal reaction temperature of the high-pressure kettle is 100-140 ℃, and the reaction time is 4-6 h.
Further, the activating agent is 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride or N-hydroxysuccinimide; the activation time is 10-15 min.
Further, the mass ratio of the activated citric acid modified sisal fibers to the chitosan is 1: 2-5.
Further, the freeze drying system is liquid nitrogen/ethanol, the temperature is-60 to-100 ℃, and the time is 24 to 48 hours.
Starch xanthate (1SX) is a heavy metal high-efficiency remover and can generate a complex with a plurality of heavy metal ions.
The peptide bond on the main chain of the polyamino acid is easy to be broken by the action of microorganisms, fungi and the like, and the final degradation products are ammonia, carbon dioxide and water which are harmless to the environment, so the polyamino acid is an environment-friendly chemical with good biodegradability. The polyamino acid is a water-soluble polymer, is a novel green water treatment agent, and has the characteristics of no phosphorus, no toxicity, no public nuisance and complete biodegradation. Has strong chelating ability to ions, has double effects of corrosion inhibition and scale inhibition, and has good scale inhibition effect on scale forming salts such as calcium carbonate, calcium sulfate, barium sulfate, calcium phosphate and the like. The polyamino acid can replace phosphorus-containing water treatment agents so as to avoid eutrophication of water bodies and discharge secondary pollution. As a water treatment agent, it has the main functions of scale inhibition and/or dispersion and corrosion inhibition. The scale inhibitor is particularly suitable for inhibiting the formation of calcium carbonate scale, calcium sulfate scale, barium sulfate scale and calcium phosphate scale in cooling water, boiler water and reverse osmosis treatment.
The organic carboxylic acid is one or more of lactic acid, hydroxybutyric acid, tartaric acid and salicylic acid, is a linear compound containing hydroxyl, has double properties of alcohol and carboxylic acid, and is ionized after being dissolved in water to generate a molecular chain with negative charges. The molecular chains with negative charges can react with calcium scale, magnesium scale and the like on the metal surface to form compounds capable of being dissolved in water, so that the compounds can be stripped from the metal surface, and hydrogen bonds of hydroxyl groups can form a layer of compact film with the metal surface, and the compact film is adsorbed on the metal surface, is smooth, has strong corrosion resistance, is difficult to adhere to dirt, has a dirt resisting effect, and prevents corrosion or scaling of the metal surface. Meanwhile, the organic carboxylic acid contains hydroxyl and carboxyl, so that a hydrophilic chelate can be formed with metal cations through coordination bonds, the growth of iron-oxidizing bacteria is obviously inhibited, and the bactericidal effect is achieved.
The amino trimethylene phosphonic acid has good chelation, and the amino trimethylene phosphonic acid has stable chemical property in water, is not easy to hydrolyze, and can form a stable complex with various metal ions.
The modified sisal fiber porous microspheres (citric acid modified sisal fiber cross-linked chitosan porous microspheres) can be regenerated after absorbing heavy metals, and still have strong adsorption capacity after being regenerated; the modified sisal fiber porous microspheres (citric acid modified sisal fiber cross-linked chitosan porous microspheres) have carboxylate ions, the carboxylate ions are easily combined with metal ions through ionic bonds, and the combination force between the two is strong; the modified sisal fiber porous microspheres (citric acid modified sisal fiber crosslinked chitosan porous microspheres) are suitable for adsorbing heavy metal ions in an aqueous solution, and metal ions capable of combining with carboxylate radicals to form ionic bonds belong to the adsorption category.
Compared with the prior art, the invention has the beneficial effects that:
the sewage treatment agent disclosed by the invention can capture various metal ions in a water body by compounding the raw materials and exerting a synergistic effect, and also has obvious corrosion and scale inhibition effects, so that the scaling and corrosion of a system can be effectively reduced, and the production cost is reduced;
secondly, the sewage treatment agent of the invention is used for treating cadmium (Cd) in heavy metal sewage2+) Lead (Pb)2+) Copper (Cu)2+) Nickel (Ni)2 +) Zinc (Zn), zinc (Zn)2+) The removal rates are respectively more than 99.9%, more than 99.4%, more than 99.3%, more than 99.8% and more than 99.3%, the removal rates of chromium, manganese and mercury in heavy metal sewage are respectively more than 99.7%, more than 99.9% and more than 99.9%, and the treatment effect is good;
the sewage treatment agent has stable performance, good precipitation effect, good effluent quality and low treatment cost; after the medicament is added into sewage, suspended matters are immediately flocculated and quickly precipitated; the treated sewage can reach the discharge standard, and the floc strength is high and the hydrophobic property is good;
the sewage treatment agent disclosed by the invention has the advantages of high purity, no toxicity, no influence on operators, no secondary pollution of treated water and the like.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a sewage treatment agent comprises the following raw materials in parts by weight: 5 parts of lactic acid, 20 parts of modified sisal fiber porous microspheres, 5 parts of polyglycine, 5 parts of starch xanthate and 1 part of amino trimethylene phosphonic acid; the modified sisal fiber porous microspheres are citric acid modified sisal fiber crosslinked chitosan porous microspheres obtained by carrying out citric acid modification, 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride activation and chitosan crosslinking on sisal fibers.
A preparation method of a sewage treatment agent comprises the following steps:
preparing modified sisal fiber porous microspheres:
dissolving sisal fibers in citric acid, adding sodium hypophosphite, carrying out hydrothermal reaction in an autoclave at the hydrothermal reaction temperature of 100 ℃ for 4h, centrifuging after the reaction is finished, taking the lower layer of precipitate, washing and drying to obtain citric acid modified sisal fibers, wherein the molar ratio of the sisal fibers to the citric acid to the sodium hypophosphite is 1:4: 0.01;
dissolving the citric acid modified sisal fibers in water, and then adding 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride for activation for 10min to obtain an activated citric acid modified sisal fiber aqueous solution;
adding the activated citric acid modified sisal fiber aqueous solution into a chitosan aqueous solution, wherein the mass ratio of the activated citric acid modified sisal fibers to the chitosan is 1:2, uniformly stirring, standing and aging to obtain citric acid modified sisal fiber crosslinked chitosan hydrogel;
freeze-drying the citric acid modified sisal fiber cross-linked chitosan hydrogel at-60 ℃ for 24 hours by using liquid nitrogen/ethanol as a freeze-drying system to obtain the citric acid modified sisal fiber cross-linked chitosan porous microspheres;
mixing: and adding lactic acid and polyglycine into the citric acid modified sisal fiber cross-linked chitosan porous microspheres, fully mixing uniformly, adding starch xanthate and amino trimethylene phosphonic acid, and fully mixing uniformly again to obtain the sewage treatment agent.
Example 2:
a sewage treatment agent comprises the following raw materials in parts by weight: 6 parts of hydroxybutyric acid, 22 parts of modified sisal fiber porous microspheres, 6 parts of polyasparagine, 6 parts of starch xanthate and 2 parts of amino trimethylene phosphonic acid; the modified sisal fiber porous microspheres are citric acid modified sisal fiber crosslinked chitosan porous microspheres obtained by carrying out citric acid modification, N-hydroxysuccinimide activation and chitosan crosslinking on sisal fibers.
A preparation method of a sewage treatment agent comprises the following steps:
preparing modified sisal fiber porous microspheres:
dissolving sisal fibers in citric acid, adding sodium hypophosphite, carrying out hydrothermal reaction in an autoclave at the hydrothermal reaction temperature of 110 ℃ for 4.5 hours, centrifuging after the reaction is finished, taking the lower layer of precipitate, washing and drying to obtain citric acid modified sisal fibers, wherein the molar ratio of the sisal fibers to the citric acid to the sodium hypophosphite is 1:5: 0.05;
dissolving the citric acid modified sisal fibers in water, and then adding N-hydroxysuccinimide for activation for 11min to obtain an activated citric acid modified sisal fiber aqueous solution;
adding the activated citric acid modified sisal fiber aqueous solution into a chitosan aqueous solution, wherein the mass ratio of the activated citric acid modified sisal fibers to the chitosan is 1:2.5, uniformly stirring, standing and aging to obtain citric acid modified sisal fiber crosslinked chitosan hydrogel;
freeze-drying the citric acid modified sisal fiber cross-linked chitosan hydrogel at-70 ℃ for 30 hours by using liquid nitrogen/ethanol as a freeze-drying system to obtain the citric acid modified sisal fiber cross-linked chitosan porous microspheres;
mixing: and adding hydroxybutyric acid and polyasparagine into the citric acid modified sisal fiber crosslinked chitosan porous microspheres, fully mixing uniformly, adding starch xanthate and amino trimethylene phosphonic acid, and fully mixing uniformly again to obtain the sewage treatment agent.
Example 3:
a sewage treatment agent comprises the following raw materials in parts by weight: 7.5 parts of salicylic acid, 25 parts of modified sisal fiber porous microspheres, 7.5 parts of polyglutamic acid, 7.5 parts of starch xanthate and 3 parts of amino trimethylene phosphonic acid; the modified sisal fiber porous microspheres are citric acid modified sisal fiber crosslinked chitosan porous microspheres obtained by carrying out citric acid modification, 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride activation and chitosan crosslinking on sisal fibers.
A preparation method of a sewage treatment agent comprises the following steps:
preparing modified sisal fiber porous microspheres:
dissolving sisal fibers in citric acid, adding sodium hypophosphite, performing hydrothermal reaction in an autoclave at the hydrothermal reaction temperature of 120 ℃ for 5 hours, centrifuging after the reaction is finished, taking the lower layer of precipitate, washing and drying to obtain citric acid modified sisal fibers, wherein the molar ratio of the sisal fibers to the citric acid to the sodium hypophosphite is 1:6: 0.1;
dissolving the citric acid modified sisal fibers in water, and then adding 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride for activation for 12.5min to obtain an activated citric acid modified sisal fiber aqueous solution; the activating agent is 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride or N-hydroxysuccinimide;
adding the activated citric acid modified sisal fiber aqueous solution into a chitosan aqueous solution, wherein the mass ratio of the activated citric acid modified sisal fibers to the chitosan is 1:3.5, uniformly stirring, standing and aging to obtain citric acid modified sisal fiber crosslinked chitosan hydrogel;
freeze-drying the citric acid modified sisal fiber cross-linked chitosan hydrogel at-80 ℃ for 36 hours by using liquid nitrogen/ethanol as a freeze-drying system to obtain the citric acid modified sisal fiber cross-linked chitosan porous microspheres;
mixing: adding salicylic acid and polyglutamic acid into the citric acid modified sisal fiber cross-linked chitosan porous microspheres, fully mixing, adding starch xanthate and amino trimethylene phosphonic acid, and fully mixing to obtain the sewage treatment agent.
Example 4:
a sewage treatment agent comprises the following raw materials in parts by weight: 9 parts of tartaric acid, 28 parts of modified sisal fiber porous microspheres, 9 parts of polyglycine, 9 parts of starch xanthate and 4 parts of amino trimethylene phosphonic acid; the modified sisal fiber porous microspheres are citric acid modified sisal fiber crosslinked chitosan porous microspheres obtained by carrying out citric acid modification, N-hydroxysuccinimide activation and chitosan crosslinking on sisal fibers.
A preparation method of a sewage treatment agent comprises the following steps:
preparing modified sisal fiber porous microspheres:
dissolving sisal fibers in citric acid, adding sodium hypophosphite, performing hydrothermal reaction in an autoclave at the hydrothermal reaction temperature of 135 ℃ for 5.5 hours, centrifuging after the reaction is finished, taking the lower layer of precipitate, washing and drying to obtain citric acid modified sisal fibers, wherein the molar ratio of the sisal fibers to the citric acid to the sodium hypophosphite is 1:7: 0.15;
dissolving the citric acid modified sisal fibers in water, and then adding N-hydroxysuccinimide for activation for 14min to obtain an activated citric acid modified sisal fiber aqueous solution;
adding the activated citric acid modified sisal fiber aqueous solution into a chitosan aqueous solution, wherein the mass ratio of the activated citric acid modified sisal fibers to the chitosan is 1:4, uniformly stirring, standing and aging to obtain citric acid modified sisal fiber crosslinked chitosan hydrogel;
freeze-drying the citric acid modified sisal fiber cross-linked chitosan hydrogel at-90 ℃ for 42 hours by using liquid nitrogen/ethanol as a freeze-drying system to obtain the citric acid modified sisal fiber cross-linked chitosan porous microspheres;
mixing: and adding tartaric acid and polyglycine into the citric acid modified sisal fiber cross-linked chitosan porous microspheres, fully mixing uniformly, adding starch xanthate and amino trimethylene phosphonic acid, and fully mixing uniformly again to obtain the sewage treatment agent.
Example 5:
a sewage treatment agent comprises the following raw materials in parts by weight: 5-10 parts of lactic acid, 20-30 parts of modified sisal fiber porous microspheres, 5-10 parts of polyasparagine, 5-10 parts of starch xanthate and 1-5 parts of amino trimethylene phosphonic acid; the modified sisal fiber porous microspheres are citric acid modified sisal fiber crosslinked chitosan porous microspheres obtained by carrying out citric acid modification, 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride activation and chitosan crosslinking on sisal fibers.
A preparation method of a sewage treatment agent comprises the following steps:
preparing modified sisal fiber porous microspheres:
dissolving sisal fibers in citric acid, adding sodium hypophosphite, performing hydrothermal reaction in an autoclave at the hydrothermal reaction temperature of 140 ℃ for 6 hours, centrifuging after the reaction is finished, taking the lower layer of precipitate, washing and drying to obtain citric acid modified sisal fibers, wherein the molar ratio of the sisal fibers to the citric acid to the sodium hypophosphite is 1:8: 0.2;
dissolving the citric acid modified sisal fibers in water, and then adding 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride for activation for 15min to obtain an activated citric acid modified sisal fiber aqueous solution;
adding the activated citric acid modified sisal fiber aqueous solution into a chitosan aqueous solution, wherein the mass ratio of the activated citric acid modified sisal fibers to the chitosan is 1:5, uniformly stirring, standing and aging to obtain citric acid modified sisal fiber crosslinked chitosan hydrogel;
freeze-drying the citric acid modified sisal fiber cross-linked chitosan hydrogel at-100 ℃ for 48 hours by using liquid nitrogen/ethanol as a freeze-drying system to obtain the citric acid modified sisal fiber cross-linked chitosan porous microspheres;
mixing: adding lactic acid and polyasparagine into the citric acid modified sisal fiber cross-linked chitosan porous microspheres, fully mixing uniformly, adding starch xanthate and amino trimethylene phosphonic acid, and fully mixing uniformly again to obtain the sewage treatment agent.
Test example:
the sewage treatment agents prepared in examples 1 to 5 and comparative example 1 were used for heavy metal wastewater treatment, and the treatment effects are shown in table 1, unit: mg/L.
TABLE 1
As can be seen from Table 1, the sewage treatment agents prepared in examples 1 to 5 of the present invention contained cadmium (Cd) in heavy metal sewage2+) Lead (Pb)2+) Copper (Cu)2+) Nickel (Ni)2+) Zinc (Zn), zinc (Zn)2+) The removal rates are respectively more than 99.9%, more than 99.4%, more than 99.3%, more than 99.8% and more than 99.3%, the removal rates of chromium, manganese and mercury in heavy metal sewage are respectively more than 99.7%, more than 99.9% and more than 99.9%, and the treatment effect is good.
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.
Claims (10)
1. A sewage treatment agent is characterized in that: the composite material comprises the following raw materials in parts by weight: 5-10 parts of organic carboxylic acid, 20-30 parts of modified sisal fiber porous microspheres, 5-10 parts of polyamino acid, 5-10 parts of starch xanthate and 1-5 parts of amino trimethylene phosphonic acid.
2. A wastewater treatment agent according to claim 1, wherein: the modified sisal fiber porous microspheres are citric acid modified sisal fiber crosslinked chitosan porous microspheres obtained by carrying out citric acid modification, activating agent activation and chitosan crosslinking on sisal fibers.
3. A wastewater treatment agent according to claim 1, wherein: the organic carboxylic acid is one or more of lactic acid, hydroxybutyric acid, salicylic acid and tartaric acid.
4. A wastewater treatment agent according to claim 1, wherein: the polyamino acid is polyglycine, polyasparagine or polyglutamic acid.
5. A preparation method of a sewage treatment agent is characterized by comprising the following steps:
preparing modified sisal fiber porous microspheres:
dissolving sisal fibers in citric acid, adding a catalyst, carrying out hydrothermal reaction in a high-pressure kettle, centrifuging after the reaction is finished, taking a lower-layer precipitate, washing and drying to obtain citric acid modified sisal fibers;
dissolving the citric acid modified sisal fibers in water, and then adding an activating agent for activation to obtain an activated citric acid modified sisal fiber aqueous solution;
adding the activated citric acid modified sisal fiber aqueous solution into a chitosan aqueous solution, uniformly stirring, standing and aging to obtain citric acid modified sisal fiber crosslinked chitosan hydrogel;
freeze-drying the citric acid modified sisal fiber cross-linked chitosan hydrogel to obtain citric acid modified sisal fiber cross-linked chitosan porous microspheres;
mixing: and adding organic carboxylic acid and polyamino acid into the citric acid modified sisal fiber crosslinked chitosan porous microspheres, fully mixing uniformly, adding starch xanthate and amino trimethylene phosphonic acid, and fully mixing uniformly again to obtain the sewage treatment agent.
6. The method for preparing a sewage treatment agent according to claim 5, wherein: the mole ratio of the sisal fibers to the citric acid to the catalyst is 1: 4-8: 0.01-0.2; the catalyst is sodium hypophosphite.
7. The method for preparing a sewage treatment agent according to claim 5, wherein: the hydrothermal reaction temperature of the high-pressure kettle is 100-140 ℃, and the reaction time is 4-6 h.
8. The method for preparing a sewage treatment agent according to claim 5, wherein: the activating agent is 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride or N-hydroxysuccinimide; the activation time is 10-15 min.
9. The method for preparing a sewage treatment agent according to claim 5, wherein: the mass ratio of the activated citric acid modified sisal fibers to the chitosan is 1: 2-5.
10. The method for preparing a sewage treatment agent according to claim 5, wherein: the freeze drying system is liquid nitrogen/ethanol, the temperature is-60 to-100 ℃, and the time is 24 to 48 hours.
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| CN115159651A (en) * | 2022-07-26 | 2022-10-11 | 谢亮芽 | Preparation process of sewage treatment agent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641226A (en) * | 2013-12-26 | 2014-03-19 | 张�成 | Heavy metal sewage treating agent and preparation method thereof |
| US8975387B1 (en) * | 2010-03-22 | 2015-03-10 | North Carolina State University | Modified carbohydrate-chitosan compounds, methods of making the same and methods of using the same |
| CN107099049A (en) * | 2017-05-16 | 2017-08-29 | 东华大学 | A kind of beta-cyclodextrin cross-linked chitosan multi-porous sorbing material of citric acid-modified and its preparation and application |
| CN108059700A (en) * | 2017-12-30 | 2018-05-22 | 黄河科技学院 | A kind of modification imprinting polymer for improving adsorption capacity and preparation method thereof |
-
2020
- 2020-05-28 CN CN202010467150.9A patent/CN111689589A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8975387B1 (en) * | 2010-03-22 | 2015-03-10 | North Carolina State University | Modified carbohydrate-chitosan compounds, methods of making the same and methods of using the same |
| CN103641226A (en) * | 2013-12-26 | 2014-03-19 | 张�成 | Heavy metal sewage treating agent and preparation method thereof |
| CN107099049A (en) * | 2017-05-16 | 2017-08-29 | 东华大学 | A kind of beta-cyclodextrin cross-linked chitosan multi-porous sorbing material of citric acid-modified and its preparation and application |
| CN108059700A (en) * | 2017-12-30 | 2018-05-22 | 黄河科技学院 | A kind of modification imprinting polymer for improving adsorption capacity and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张辉等: "壳聚糖柠檬酸改性大麻织物结构与性能研究", 《西安工程大学学报》 * |
| 梁治齐: "《实用清洗技术手册》", 31 January 2000, 北京化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159651A (en) * | 2022-07-26 | 2022-10-11 | 谢亮芽 | Preparation process of sewage treatment agent |
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