Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Composite coagulant and preparation method and application thereof

A coagulant and composite technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water pollutants, etc., can solve the problems of poor wastewater treatment effect and poor adaptability, so as to achieve unbreakable and reduce Cost input, the effect of large particle size

Inactive Publication Date: 2021-06-01
CHINA ELECTRONICS INNOVATION ENVIRONMENTAL TECH CO LTD
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] What the present invention proposes is a kind of composite coagulant and its preparation method and application. 3+ The efficient settling performance and Al 3+ Excellent coagulation characteristics in one, solving the problems of poor treatment effect and poor adaptability of conventional single coagulant in the prior art for high-concentration (400mg / L) cerium oxide wastewater

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) configuration volume is 550mL, concentration is the sodium silicate nonahydrate solution of 0.15mol / L, joins in the sulfuric acid solution that 5mL volume fraction is 25% and adjusts the pH value of solution to be 2.5, polymerizes 30min at room temperature, obtains solution, record for solution A.

[0022] (2) Weigh 22g of anhydrous aluminum chloride and add it to the above solution A, stir at a rate of 250r / min for 10min to obtain a mixed solution, which is designated as solution B.

[0023] (3) Weigh 6.5g of anhydrous ferric sulfate solid and add it to solution B in step (2), stir at 250r / min until completely dissolved, and age for 12h to obtain a composite coagulant.

[0024] (4) Put the composite coagulant in step (3) into high-concentration (400mg / L) cerium oxide wastewater, and the dosage is 20mg / L. After 30s of input, obvious aggregation phenomenon occurs. After 35min of treatment, the cerium oxide is removed. The rate can reach 99.3%.

Embodiment 2

[0026] (1) Configure a sodium silicate nonahydrate solution with a volume of 500 mL and a concentration of 0.1 mol / L, add it to 4.5 mL of a sulfuric acid solution with a volume fraction of 25%, adjust the pH value of the solution to 3, and polymerize at room temperature for 35 minutes to obtain a solution, Denoted as solution A.

[0027] (2) Weigh 13g of anhydrous aluminum chloride and add it to the above solution A, stir at a rate of 200r / min for 15min to obtain a mixed solution, which is designated as solution B.

[0028] (3) Weigh 4g of anhydrous ferric sulfate solid and add it to solution B in step (2), stir at 200r / min until completely dissolved, and age for 16h to obtain a composite coagulant.

[0029] (4) Put the composite coagulant in step (3) into high-concentration cerium oxide (400mg / L) wastewater, the dosage is 40mg / L, and obvious coagulation occurs after 30s of input, and after 35min of treatment, the cerium oxide is removed The rate can reach 99.5%.

Embodiment 3

[0031] (1) configuration volume is 450mL, concentration is the sodium silicate nonahydrate solution of 0.05mol / L, joins in the sulfuric acid solution that 4mL volume fraction is 25% and adjusts the pH value of solution to be 3.5, polymerizes 40min at room temperature, obtains solution, record for solution A.

[0032] (2) Weigh 6g of anhydrous aluminum chloride and add it to the above solution A, stir at a rate of 250r / min for 20min to obtain a mixed solution, which is designated as solution B.

[0033] (3) Weigh 1.8 g of anhydrous ferric sulfate solid and add it to solution B in step (2), stir at 250 r / min until completely dissolved, and age for 24 hours to obtain a composite coagulant.

[0034] (4) Put the composite coagulant in step (3) into high-concentration cerium oxide (400mg / L) wastewater, the dosage is 60mg / L, and obvious coagulation occurs after 30s of input, and after 35min of treatment, the cerium oxide is removed The rate can reach 99.2%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a composite coagulant and a preparation method and application thereof. The composite coagulant is prepared from the following raw materials: sodium silicate nonahydrate, anhydrous aluminum chloride and anhydrous ferric sulfate in a molar ratio of 5: 10: 1. The preparation method comprises the following steps: (1) adding a sodium silicate nonahydrate solution into a sulfuric acid solution, and carrying out polymerization reaction to obtain a solution A; (2) dissolving anhydrous aluminum chloride in the solution A, and stirring to obtain a solution B; and (3) adding anhydrous ferric sulfate into the solution B, stirring and aging. The composite coagulant is applied to high-concentration cerium oxide wastewater treatment. The composite coagulant has the advantages that bridging adsorption of Si, high-efficiency sedimentation performance of Fe < 3 + > and excellent coagulation characteristic of Al < 3 + > are integrated, the cerium oxide wastewater treatment efficiency is improved, the treatment load of a sedimentation tank in the later period is reduced, and the investment is reduced. The purification efficiency of the cerium oxide wastewater reaches 99% or above. The generated flocculating constituent is large in particle size, firm, not easy to break, good in settling performance, and good in acid and alkali resistance and heat resistance. The removal rate of cerium oxide is superior to that in the prior art under the same dosage.

Description

technical field [0001] The invention relates to a composite coagulant and its preparation method and application, belonging to the technical field of coagulant preparation. Background technique [0002] The electronic panel industry will use polishing powder to polish the cut and ground glass. In this process, the sponge brush of the edge polishing machine dipped in a high concentration of polishing agent (milky white liquid) is used to grind the glass surface to improve product integration. The main component of polishing powder is cerium oxide. In order to improve the polishing effect of the product, a certain amount of suspending agent will be added to the polishing agent during the polishing process to improve the suspension characteristics of the polishing powder. However, the addition of suspending agent greatly increases the difficulty in the treatment of high-concentration cerium oxide wastewater in the later stage. [0003] At present, the common treatment method ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F101/20
CPCC02F1/5236C02F2101/20
Inventor 唐立朋张业栋张琴李晓波王文文湛洪彭勇
Owner CHINA ELECTRONICS INNOVATION ENVIRONMENTAL TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com