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

Phosphorus-removing adsorbent and preparation method thereof

A phosphorus adsorbent and adsorbent technology, applied in the field of phosphorus removal in artificial wetland treatment of domestic sewage, to achieve the effects of cost reduction, easy availability of raw materials, and recycling of component resources

Active Publication Date: 2013-05-22
SOUTHWEST UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to propose a new phosphorus removal adsorbent and preparation method for the deficiencies of the existing urban domestic sewage phosphorus removal technology

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

[0025] The main components and weight percentages of phosphorus removal adsorbent are as follows:

[0026] Natural Zeolite 83.3%

[0027] Active Iron Oxide 16.7%

[0028] Prepare as follows:

[0029] 1. Preparation of ferric chloride solution

[0030] Under normal temperature and pressure, mix by ferric chloride: water weight ratio is 0.05: 1, and its preparation method is, under stirring condition, add ferric chloride to water, stir evenly;

[0031] 2. Make a mixture

[0032] In the prepared ferric chloride solution, add natural zeolite and stir and mix;

[0033] 3. Adjust the pH value of the mixture

[0034] Under stirring conditions, quickly add a sodium hydroxide solution with a mass concentration of 3% to the above mixed solution to make its pH value 7.0;

[0035] 4. Obtain phosphorus-removing zeolite with iron oxides on its surface

[0036] The fully reacted mixed solution is filtered and dried to produce the phosphorus-removing zeolite loaded with iron oxide.

Embodiment 2

[0038] The main components and weight percentages of phosphorus removal adsorbent are as follows:

[0039] Industrial by-product cinder 92.6%

[0040] Active Iron Oxide 7.4%

[0041] Prepare as follows:

[0042] 1. Preparation of ferric chloride solution

[0043] Under normal temperature and pressure, mix by ferric chloride: water weight ratio is 0.02: 1, and its preparation method is, under stirring condition, add ferric chloride to water, stir evenly;

[0044] 2. Make a mixture

[0045] In the prepared ferric chloride solution, add cinder and stir to mix;

[0046] 3. Adjust the pH value of the mixture

[0047] Quickly add a sodium hydroxide solution with a mass concentration of 1% to the above mixed solution under stirring conditions to make its pH value 7.0;

[0048] 4. Obtain phosphorus removal coal slag loaded with iron oxide on the surface

[0049] The fully reacted mixed solution is filtered and dried to produce phosphorus-removing coal slag loaded with iron oxid...

Embodiment 3

[0051] The main components and weight percentages of phosphorus removal adsorbent are as follows:

[0052] Gravel 61.5%

[0053] Active Iron Oxide 28.5%

[0054] Prepare as follows:

[0055] 1. Preparation of ferric chloride solution

[0056] Under normal temperature and pressure, mix by ferric chloride: water weight ratio is 0.2: 1, and its preparation method is, under stirring condition, add ferric chloride to water, stir evenly;

[0057] 2. Make a mixture

[0058] In the prepared ferric chloride solution, add gravel and stir to mix;

[0059] 3. Adjust the pH value of the mixture

[0060] Quickly add a sodium hydroxide solution with a mass concentration of 11% to the above mixed solution under stirring conditions to make its pH value 7.0;

[0061] 4. Obtain phosphorus removal gravel loaded with iron oxide on the surface

[0062] The fully reacted mixed solution is filtered and dried to produce phosphorus-removing gravel loaded with iron oxides.

[0063] Adopt the dep...

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 phosphorus-removing adsorbent and a preparation method thereof and particularly relates to the phosphorus-removing technique of sewage treatment. The phosphorus-removing adsorbent the following components in percentage by weight: 61.5 to 92.6 percent of natural minerals such as zeolite or industrial side products such as coal cinder, which are used as raw materials, and 7.4 to 28.5 percent of active iron oxide. The phosphorus-removing adsorbent has the advantages of low cost, simple components, waste utilization and the like. The preparation method is simple and avoids secondary pollution. During sewage treatment, through the adoption of the phosphorus-removing adsorbent, filling adsorption and chemical precipitation, phosphorus in the sewage can be removed effectively and TSS, BOD, COD and the like can be reduced. The phosphorus-removing adsorbent and the preparation method thereof can be widely applied to the sewage treatment, is particularly suitable for constructed wetlands to treat phosphorus-containing sewage.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a phosphorus removal technology for artificial wetland treatment of domestic sewage. Background technique [0002] Nitrogen and phosphorus are the main causes of water eutrophication. According to Liebig Law of the Minimum, phosphorus is often regarded as one of the main inducing factors of water eutrophication. Therefore, phosphorus removal in sewage is very important for controlling water eutrophication. is of great significance. [0003] At present, the phosphorus removal technologies of large-scale sewage treatment plants mainly include biological phosphorus removal and chemical precipitation phosphorus removal, but the cost is high and it is difficult to meet the discharge standards. Constructed wetland phosphorus removal process has the advantages of good phosphorus removal effect, low investment, low operating cost, simple maintenance and management, ...

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 Patents(China)
IPC IPC(8): B01J20/08B01J20/30C02F1/28C02F1/58
Inventor 黄玉明张文娟梁帮强何勇赵孝梨
Owner SOUTHWEST UNIV
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