Oxidation method and compositions therefor

a technology of oxidation method and composition, which is applied in the field of improved two-part oxidizing system, can solve the problems of affecting the efficiency of ph treatment, so as to achieve less water hardness ions, and less sodium acid sulfate

Inactive Publication Date: 2007-02-22
ALCIDE CORP
View PDF27 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016] Surprisingly, it has been discovered that sodium acid sulfate or a moiety which delivers the bisulfate ion (HSO4−) in solution is just as effective an acid activator as citric acid at forming metastable chlorous acid compositions with many of the same advantages of citric acid but without the disadvantages described above. This is extremely unexpected because sodium acid sulfate is a mineral acid which has been traditionally associated with the rapid formation of chlorine dioxide. First, sodium acid sulfate does not have negative effects on wastewater treatment or the environment. Specifically, sodium acid sulfate is not a sequestrant so it does not negatively react with a metal-containing coagulant. Further, less sodium acid sulfate needs to be used to generate chlorous acid so fewer ions are present in solution to harm the bacteria in a water treatment plant or the biota in the receiving s

Problems solved by technology

Disinfectants are widely used on farms where the difference between healthy and sick animals can mean the difference between profitability and loss.
However, organic acids, and citric acid in particular, have several undesirable side effects.
Most of the wastewater treatment costs in food processing facilities are associated with adding coagulants and flocculants to the water.
Citric acid is a sequestrant and interferes with the ability of the coagulant to work effectively because the cations of the coagulant (that is the metal ions) are tied up to the citric acid and is no longer free to neutralize the surface charges of the fats and oils in the water.
More coagulant must be added to neutralize the fats and oils which increases the operation costs of a plant.
The process quality goes down and the manpower needed to make the process work increases which means increased costs for the plant.
More flocculant must be added which also increases the operation costs for the plant.
However, sometimes the solids contain too many metal cations to be used as a feed additive.
However, depositing material in landfills is environmentally undesirable and not all states allow this practice.
In addition to increasing the solids, citric acid usage increases the turbidity of the wastewater.
High turbidity or high solids in the wastewater is undesirable because it creates places for bacteria to grow in the water.
Further high turbidity increases the COD or chemical oxygen demand of the wastewater which is undesirable.
Organics are undesirable because they provide a food for bacteria to grow.
Further, wastewater discharge rules limit the quantity of organics that can be in the effluent wastewater.
Finally

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
  • Oxidation method and compositions therefor
  • Oxidation method and compositions therefor
  • Oxidation method and compositions therefor

Examples

Experimental program
Comparison scheme
Effect test

example 1

Impact of Ferric Sulfate Addition on COD

[0127] As previously discussed, coagulants are often used in wastewater treatment to remove charges from particles in solution and make them more likely to form larger particles that can float to the top and be skimmed off and removed. However, when acidified sodium chlorite solutions are present in the wastewater, the type of acid used to make the acidified sodium chlorite solution can impact the wastewater treatment process. Example 1 tested the impact of a known coagulant, ferric sulfate, on the COD (chemical oxygen demand) when the acidified sodium chlorite solutions of Table 2 are present. For this example, the wastewater treatment test method was used. After wastewater samples were pulled, various levels of ferric sulfate were added to the samples. The samples were then subjected to the Jar Test Profile and the mg / L COD was recorded.

[0128]FIGS. 1 and 2 show the impact of acidified sodium chlorite compositions made with citric acid and ...

example 2

Impact of Ferric Sulfate Addition of Phosphorous Removal

[0129] Again, ferric sulfate is a known coagulant used in wastewater treatment that can react with acidified sodium chlorite solutions in the waste water. As previously discussed, phosphorous is one of many species present in the wastewater that must be removed. Example 2 tested the impact of ferric sulfate concentration on phosphorous level left in the wastewater when the acidified sodium chlorite solutions of Table 2 are present. For this example, the wastewater treatment test method was used. After wastewater samples were pulled, various levels of ferric sulfate were added to the samples. The samples were then subjected to the Jar Test Profile and the mg / L phosphorous was recorded.

[0130]FIG. 3 shows the impact of acidified sodium chlorite compositions made with citric acid and sodium acid sulfate on the phosphorous level in the wastewater. The sodium acid sulfate formula always has a lower level of phosphorous in the waste...

example 3

Impact of Ferric Sulfate on Turbidity

[0131] As previously discussed, high turbidity or a high solid concentration in wastewater is undesirable for several reasons. High turbidity creates places for bacteria to grow. High turbidity also increases COD which is undesirable for the reasons previously discussed in Example 1. Finally, high turbidity or high solid is aesthetically undesirable, particularly in drinking water. Example 3 tested the impact of ferric sulfate concentration on turbidity in the wastewater when the acidified sodium chlorite solutions of Table 2 are present. For this example, the wastewater treatment test method was used. After wastewater samples were pulled, various levels of ferric sulfate were added to the samples. The samples were then subjected to the Jar Test Profile and the turbidity was recorded.

[0132]FIG. 4 shows the impact of acidified sodium chlorite compositions made with citric acid and sodium acid sulfate on the turbidity of the wastewater. Initially...

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 present invention generally relates to an improved two-part oxidizing system, as well as oxidizing compositions and methods for making and using the same, and in a particular embodiment to a two-part oxidizing system that, when mixed, yields an oxidizing composition. The two-part oxidizing system includes a metal chlorite first part, and an acid second part where the acid is sodium acid sulfate or a derivative thereof.

Description

FIELD OF THE INVENTION [0001] The present invention generally relates to an improved two-part oxidizing system, as well as oxidizing compositions and methods for making and using the same, and in a particular embodiment to a two-part oxidizing system that, when mixed, yields an oxidizing composition. The two-part oxidizing system includes a metal chlorite first part, and an acid second part where the acid is sodium acid sulfate or a chemical moiety that provides the bisulfate ion in situ. BACKGROUND OF THE INVENTION [0002] Many diseases arise from the growth and spread of microorganisms that can affect all aspects of life, from human health, to animal health, to food and water safety, to the safety of the environments we live in. Oxidizers and disinfectants have found wide spread application in all these areas. Hospitals perform rigorous programs to disinfect and sterilize their environments. Consumer homes are replete with disinfectant hand cleaners, sprays, hard surface cleaners, ...

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): A23B4/14
CPCA01N59/00A23B4/24A01N59/02A01N2300/00
Inventor WARF, C. CAYCE JR.KOTROLA, NAHED M.
Owner ALCIDE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap