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

Application of high-basicity polyaluminum chloride in reduction of residual aluminum content of drinking water

A polyaluminum chloride and salinity technology, applied in the field of water treatment, can solve problems such as uncommon application, and achieve the effects of low economic cost and strong aluminum reduction effect.

Inactive Publication Date: 2012-02-29
深圳市中润水工业技术发展有限公司 +1
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it can also be expressed by the molecular ratio (molar ratio) of OH to Al, B=OH / Al=m / n, but it is not widely used

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Application of high-basicity polyaluminum chloride in reduction of residual aluminum content of drinking water
  • Application of high-basicity polyaluminum chloride in reduction of residual aluminum content of drinking water
  • Application of high-basicity polyaluminum chloride in reduction of residual aluminum content of drinking water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] [Example 1] Effects of different coagulants on residual aluminum in purified water

[0040] In this example, different coagulants were used to carry out precipitation tests to study the influence of different coagulants on the residual aluminum content in purified water. The technical specifications of the coagulant used in the test are shown in Table 3. The test results of residual aluminum content are shown in Table 4. See Table 8 and Table 9 for economic costing and comparison.

[0041] Table 3 Test coagulant technical indicators

[0042]

[0043] Table 4 Effect of different coagulants on residual aluminum in purified water

[0044]

[0045] Raw water for the test: water from Shanghai Qingcaosha Reservoir, turbidity: 7.25NTU, alkalinity: 96mg / L, pH: 8.11, water temperature 23°C (indoor), GT value: 41304, stirring: 8 minutes, sedimentation: 15 minutes.

[0046] It can be seen from Table 4 that PAC, AC and AS coagulants all have the effect of reducing the r...

Embodiment 2

[0047] [Example 2] The impact of PAC with different salinity on residual aluminum in purified water

[0048] In this example, coagulation and sedimentation tests were further carried out with PACs of different basicity to study the effect of the basicity of PAC on the residual aluminum content of purified water. See Table 5 for the technical specifications of the coagulant used for the test, and Table 6 for the results. See Table 8 for economic costing and comparison.

[0049] Table 5 Technical index of coagulant used in test

[0050]

[0051] Table 6 Effect of PAC with different salinity on residual aluminum in purified water

[0052]

[0053] Raw water for the test: Dongjiang water distribution, turbidity: 17.4NTU, alkalinity: 38.0mg / L, pH: 8.32, water temperature 26°C, GT value: 35280, stirring: 8 minutes, precipitation: 10 minutes.

[0054] As can be seen from Table 6 and Table 8, compared with PAC with a basicity of 97.0% and a PAC with a basicity of 82.8%, the...

Embodiment 3

[0055] [Example 3] The influence of different raw water pH on residual aluminum in purified water

[0056] This embodiment further uses PAC with a basicity of 97.0% as a coagulant, and adjusts the raw water to different pHs with 0.5mol / L hydrochloric acid and 0.5mol / L sodium hydroxide aqueous solution to carry out coagulation and sedimentation tests to study the effect of the pH value of raw water on the residual water in purified water. The effect of aluminum content, the results are shown in Table 7.

[0057] Table 7 Effect of different raw water pH on residual aluminum in purified water

[0058]

[0059] Raw water for the test: Dongjiang water distribution, turbidity: 14.2NTU, alkalinity: 78.0mg / L, pH: 8.25, water temperature 26°C, GT value: 35280, stirring: 8 minutes, precipitation: 10 minutes.

[0060] It can be seen from Table 7 that the pH of raw water has an impact on the residual aluminum content of purified water, and as the pH increases, the residual aluminum ...

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 application of polyaluminum chloride with basicity of more than or equal to 85 percent in reduction of residual aluminum content of drinking water. The polyaluminum chloride with basicity of more than or equal to 85 percent is added into raw water, the adding amount of the polyaluminum chloride serving as a coagulating agent is 1.0 to 5.0mg / L based on Al2O3, the turbidity of sedimentation water is controlled at 1.0 to 3.0NTU, the turbidity of the filtered water is controlled at less than or equal to 1.0NTU, and the residual aluminum content of the purified drinking water can be reduced to be less than 0.20mg / L and accords with the aluminum content limiting standard of national domestic drinking water. The invention also discloses application of aluminum chloride in reduction of residual aluminum content of drinking water.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to the application of high salinity polyaluminum chloride in reducing the residual aluminum content of drinking water. Background technique [0002] Aluminum is the third largest element in the earth's crust, and the human body absorbs aluminum into the human body every day through food, beverages and drinking water. For a long time, because the acute toxicological effect of aluminum has not been found, the harm of aluminum to the human body has never been paid attention to. It was not until the 1970s that there was a surprising discovery in the medical field that when aluminum accumulated to a certain extent in the human body, it would cause harmful Severe damage to the kidneys, cardiovascular system, and especially the brain and nervous system, causing diseases such as Alzheimer's disease. [0003] Since there are water-soluble small molecular aluminum ions in drinking water, its b...

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
IPC IPC(8): C02F1/52C02F101/10
Inventor 李润生李凯
Owner 深圳市中润水工业技术发展有限公司
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