Check patentability & draft patents in minutes with Patsnap Eureka AI!

Production process of sewage treatment composite dephosphorizing agent

A compound dephosphorization agent and production process technology, applied in the direction of adsorption water/sewage treatment, other chemical processes, chemical instruments and methods, etc., to achieve the effect of increasing viscosity and enriching the comparison area

Active Publication Date: 2020-12-08
SDIC XINKAI WATER ENVIRONMENT INVESTMENT CO LTD +1
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum slag is used in this invention patent, and the aluminum slag is recycled, but iron salt and calcium aluminate powder are still added

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

[0020] A production process of composite phosphorus removal agent for sewage treatment, prepared by the following method:

[0021] (1) After the coal cinder is broken, cross a 60 mesh sieve, add the 60 purpose coal cinder powder to a concentration of 10wt% in the sodium hydroxide solution, and the quality of the sodium hydroxide solution and the mass ratio of the coal cinder are 2:1, stirring and reacting, then Pass carbon dioxide into the reaction solution under stirring until no precipitation is generated, filter and collect the filter cake; the coal cinder is purchased from Yuantong Coal Cinder;

[0022] (2) adding the obtained filter cake to a sulfuric acid solution with a concentration of 30 wt%, and the ratio of the mass of the sulfuric acid solution to the mass of the filter cake was 2:1, left to stand for 2 hours, and freeze-dried to obtain mixture A;

[0023] (3) The glutinous rice flour was hydrolyzed for 0.5 h under acidic conditions with a pH of 5, and the reaction...

Embodiment 2

[0026] A production process of composite phosphorus removal agent for sewage treatment, prepared by the following method:

[0027] (1) After the coal cinder is broken, cross a 60 mesh sieve, add the 60 purpose coal cinder powder to a concentration of 10wt% in the sodium hydroxide solution, and the quality of the sodium hydroxide solution and the mass ratio of the coal cinder are 2:1, stirring and reacting, then Pass carbon dioxide into the reaction solution under stirring until no precipitation is generated, filter and collect the filter cake; the coal cinder is purchased from Yuantong Coal Cinder;

[0028] (2) adding the obtained filter cake into a sulfuric acid solution with a concentration of 30 wt%, and the ratio of the mass of the sulfuric acid solution to the mass of the filter cake is 2:1, standing for 3 hours, and freeze-drying to obtain mixture A;

[0029] (3) The glutinous rice flour was hydrolyzed for 0.7 h under acidic conditions with a pH of 5.5, and the reaction ...

Embodiment 3

[0032] A production process of composite phosphorus removal agent for sewage treatment, prepared by the following method:

[0033] (1) After the coal cinder is broken, cross a 60 mesh sieve, add the 60 purpose coal cinder powder to a concentration of 10wt% in the sodium hydroxide solution, and the quality of the sodium hydroxide solution and the mass ratio of the coal cinder are 2:1, stirring and reacting, then Pass carbon dioxide into the reaction solution under stirring until no precipitation is generated, filter and collect the filter cake; the coal cinder is purchased from Yuantong Coal Cinder;

[0034] (2) adding the obtained filter cake into a sulfuric acid solution with a concentration of 30 wt%, and the ratio of the mass of the sulfuric acid solution to the mass of the filter cake is 2:1, standing for 3 hours, and freeze-drying to obtain mixture A;

[0035] (3) The glutinous rice flour was hydrolyzed for 1 hour under acidic conditions with a pH of 6, and the reaction t...

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 discloses a sewage treatment composite phosphorus removal agent production process, which comprises: (1) crushing coal cinder, adding coal cinder powder to a sodium hydroxide solution, carrying out a stirring reaction, introducing carbon dioxide to the reaction liquid while stirring until no precipitate is generated, filtering the solution and collecting the filter cake; (2) adding the obtained filter cake into a sulfuric acid solution, standing the mixture for 2-3 hours, and freeze-drying the mixture to obtain a mixture A; (3) carrying out hydrolysis reaction on the glutinous rice flour for 0.5-1 hour at the reaction temperature of 40-50 DEG C under the acidic condition that the pH value is 5-6, and cooling and drying the product, washing the productwith purified water untilthe glutinous rice flour is neutral, and drying the product again to obtain a mixture B; and (4) adding the mixture A, the mixture B and glutinous rice flour into water, heating the mixtures to 60-70DEG C, carrying out ultrasonic treatment for 2-3 hours, and drying the mixtures to obtain the composite phosphorus removal agent. According to the phosphorus removal agent, coal slag and waste are utilized, chemical reagents such as aluminum sulfate, ferric sulfate and aluminum chloride are not additionally added, and new pollution caused by enrichment of iron ions and aluminum ions in water is avoided.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a production process of a composite phosphorus removal agent for sewage treatment. Background technique [0002] In recent years, with the rapid increase of population and rapid industrial growth, environmental pollution has become increasingly serious. Exceeding the standard of phosphorus in water will accelerate the eutrophication of the water body, cause algal blooms, a large drop in dissolved oxygen in the water body, and deterioration of water quality, which has brought great harm to industry, aquaculture, agriculture, and tourism. Therefore, how to effectively reduce the concentration of phosphorus in sewage is of great significance to eliminate pollution and protect the environment. At present, the commonly used phosphorus removal agents are mostly prepared from pure chemical reagents. Although the production process of this phosphorus removal agent is simple, ...

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): C02F1/28B01J20/24B01J20/30
CPCC02F1/28B01J20/0248B01J20/0229B01J20/0281B01J20/045B01J20/10B01J20/22B01J20/24
Inventor 侯锋卢先春邵彦青庞洪涛李彰鑫宋亚宁赵颖出
Owner SDIC XINKAI WATER ENVIRONMENT INVESTMENT CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com