Introduction to Chlorine Dioxide Process for deodorization, disinfection and mold removal

I. Introduction to Chlorine Dioxide
Chlorine dioxide is recognized as a broad
spectrum, safe fourthgeneration A1 grade green

disinfectant deodorant. The molecular structure of chlorine dioxide consists of a chlorine atom and two oxygen atoms. The redox potential is 0.95V, which is highly oxidizing. It can undergo redox reactions with many organic and inorganic substances, including organic sulfides and organic compounds. Amines, phenols, aromatic hydrocarbons and unsaturated compounds. Oxidation of chlorine dioxide is derived from oxygen atoms and does not react with organic substances, so it does not produce a triad reaction (carcinogenic, teratogenic, mutagenic). Chlorine dioxide rapidly oxidizes and decomposes various odor molecules (ammonia, nitrogen, sulfide, etc.) by oxidizing properties, kills microorganisms such as bacteria, molds, viruses, etc., and can achieve disinfection and deodorization effects.

II.Chlorine dioxide deodorization
Chlorine dioxide can undergo redox reactions with many organic and inorganic substances,

including organic sulfides, organic amines, phenols, aromatic hydrocarbons and unsaturated compounds. Therefore, chlorine dioxide can oxidize and decompose odor molecules in the air.

Introduction to Chlorine Dioxide Process for deodorization, disinfection and mold removal

I. Introduction to Chlorine Dioxide
Chlorine dioxide is recognized as a broad
spectrum, safe fourthgeneration A1 grade green

disinfectant deodorant. The molecular structure of chlorine dioxide consists of a chlorine atom and two oxygen atoms. The redox potential is 0.95V, which is highly oxidizing. It can undergo

redox reactions with many organic and inorganic substances, including organic sulfides and organic compounds. Amines, phenols, aromatic hydrocarbons and unsaturated compounds. Oxidation of chlorine dioxide is derived from oxygen atoms and does not react with organic substances, so it does not produce a triad reaction (carcinogenic, teratogenic, mutagenic). Chlorine dioxide rapidly oxidizes and decomposes various odor molecules (ammonia, nitrogen, sulfide, etc.) by oxidizing properties, kills microorganisms such as bacteria, molds, viruses, etc., and can achieve disinfection and deodorization effects.

II.Chlorine dioxide deodorization
Chlorine dioxide can undergo redox reactions with many organic and inorganic substances,

including organic sulfides, organic amines, phenols, aromatic hydrocarbons and unsaturated compounds. Therefore, chlorine dioxide can oxidize and decompose odor molecules in the air.

Chlorine dioxide gas deodorization data

Testing equipment: It adopts a portable malodorous gas detector made in Korea and has three types of sensors: H2S (hydrogen sulfide), TVOCS (total volatile organic compounds), and OU (complex malodor).

Location and time of inspection: public toilet, summer in September

1. The value of malodor in the air changes before and after treatment of the public toilet with chlorine dioxide gas.

The chlorine dioxide liquid is used to flush the toilet (once per hour) and chlorine dioxide gas to deodorize the space. At this time, the concentration of chlorine dioxide in the air is 0.08ppm (0.24mg/m3) for the male toilet and 0.1ppm (0.3mg for the female toilet). /m3), public hall 0.11ppm (0.33mg/m3).

Male toilet Public foyer Female toilet

Item

Background average

Average value after use

OU 2.925 1.624

H2S 0.105 0.002

TVOC 0.324 0.215

OU 2.612 1.413

H2S 0.103 0.006

TVOC 0.302 0.166

OU 2.561 1.384

H2S 0.096 0.001

TVOC 0.275 0.166

Comparing the above data with the histogram, it can be found that the values of OU, H2S, TVOCs, etc. have all dropped significantly, especially H2S is almost 0, and the odor is almost unseen through the senses. It has been verified by experiments that the use of chlorine dioxide liquidgas integrated treatment of the toilet can significantly remove the odor.

III. Chlorine dioxide gas disinfection effect
The main functions of chlorine dioxide for disinfection are as follows: 1) by destroying the

peripheral protective structure of the attacking pathogen, causing the cell wall or cell membrane structure to be destroyed and losing activity; 2) destroying the pathogen by infiltrating the pathogen Metabolize the necessary enzyme system to make it inactivated; 3) Break through the pathogen, break the synthesis process of pathogen proteins, nucleic acids, coenzymes, etc., so that it cant grow normally.

1. The killing of bacterial propagules in the air by chlorine dioxide gas

The volume of the disinfection site is 10m3. Using the A200 chlorine dioxide gas disinfection machine, 10 pieces of chlorine dioxide disinfection tablets are placed in the high

wind, sterilization and swing wind mode, and the staphylococcus aureus, Staphylococcus aureus and copper green pseudomons in the experimental cabin. After the bacteria propagules were treated for 30 min, 60 min and 60 min respectively, the average killing rates were 99.97%, 99.99% and 99.99%, respectively.

Number of colonies before experiment (cfu/m3)

Number of colonies after experiment (cfu/m3)

Natural extinction rate (%)

Number of colonies before experiment (cfu/m3)

Number of colonies after experiment (cfu/m3)

Experimental strain

Staphylococcus aureus

staphylococcus aureus

Pseudomonas aeruginosa

Time of action (min)

30 60 60

1.11×105 1.08×105 9.18×104

26.94 23.43 35.95

1.09×105 1.11×105 9.57×104

Kill rate (%)

21 99.97 7 99.99 7 99.99

Control group

8.11×104 8.27×104 5.88×104

Experimental group

2. Disinfection of office space for chlorine dioxide gas

In the 80m3 unenclosed office, 5 pieces and 10 pieces of chlorine dioxide disinfection tablets were put into use, and the A200 chlorine dioxide gas disinfection machine was used to kill the air natural bacteria after 30 minutes in high wind, sterilization and swinging mode. The extinction rates were 92.61% and 98.21%, respectively.

In the 200m3 unenclosed office, 20 pieces of chlorine dioxide disinfection tablets were put into use, and the killing rate of air natural bacteria after using the A200 chlorine dioxide gas disinfection machine in high wind, sterilization and swinging mode for 60 minutes was 92.33. %.

Airborne 80 30 5 2.11×103 156 92.61

Strain

Office volume (m3)

Time of action (min)

Chlorine dioxide disinfection tablets (tablets)

Number of colonies before experiment (cfu/m3)

Number of colonies after experiment (cfu/m3)

Kill rate (%)

natural bacteria

Airborne natural bacteria Airborne natural bacteria

80 30 10

200 60 20

1.96×103 35

2.02×103 155

98.21

92.33

It can be seen that the use of chlorine dioxide gas to disinfect the air can significantly reduce the number of bacteria in the air and achieve the purpose of preventing the spread of epidemic diseases.

3. Chlorine dioxide gas mold removal effect

The air was sterilized using chlorine dioxide gas at a concentration of 10 mg/m3. The changes in the number of molds before and after disinfection were as shown in the table below.

Mold 60 10 1.81×103 171 90.55

The above data shows that the amount of bacteria and fungi is significantly reduced when chlorine dioxide gas is sterilized against air. A good mold removal effect can be achieved by using chlorine dioxide gas.

4. Chlorine dioxide gas kills viruses in the air

The air was sterilized using chlorine dioxide gas at a concentration of 10 mg/m3, and the change in the number of virus droplets after the disinfection was as shown in the following table.

Strain

Time of action (min)

Chlorine dioxide disinfection concentration (mg/m3)

Number of colonies before experiment (cfu/m3)

Number of colonies after experiment (cfu/m3)

Kill rate (%)

Virus name

Time of action (min)

Logarithmic value of inactivated virus droplets (TCID50)

Respiratory syncytial

60

>4.00

virus(RSV)

IV. Disinfection effect of chlorine dioxide liquid

Spraying or wiping the surface of the object with a concentration of 100 mg/L of chlorine dioxide can kill bacteria on the surface (including super bacteria such as MRSA, CRE, VRE, CRAB, and CRPA), viruses (influenza virus, hepatitis virus, and intestinal tract). Virus, norovirus, mold, etc.

1. Disinfection effect of chlorine dioxide liquid on bacteria

The killing experiment of E. coli and Staphylococcus aureus suspension was carried out using 100 mg/L chlorine dioxide disinfectant. After 5 min, the average kill log value was >5.00.

Escherichia Coli 100 >5.00 7.48(7.407.54) staphylococcus aureus 100 >5.00 7.53(7.417.61)

Comparison of disinfection effect of chlorine dioxide on MRSA (super bacteria)

Experimental strain

Concentration (mg/L)

5 minutes of action time average kill logarithm

Logarithmic value and range of average number of colonies in positive control group

Disinfector

Strain

(CFU/cm2)

Kill rate (%)

Blank MRSA 23 —

Chlorine dioxide MRSA 1 95.65

Note: the killing rate of 100mg/L chlorine dioxide liquid to MRSA was 95.65%, and the disinfection efficiency was 46.66% higher than that of chlorine preparation disinfectant.

Control group (chlorine preparation)

MRSA

8

65.22

V. Chlorine dioxide is an actual nontoxic substance Acute inhalation is practically nontoxic

Dosage Number of Weight(x±SD)(g) Animal (mg/m3) animals

Number of Death dead rate

animals (%)

0 day

7 days

14 days

Female mouse

10000

10

19.0±0.4

28.0±2.3

31.1±2.6

0

0

No obvious symptoms of poisoning and death were observed in the experimental animals during the 14day observation period. No abnormalities were observed in the general anatomy of the experimental animals. The test animal had an acute inhalation of chlorine dioxide of LC502h>10000mg/m3, so the acute inhalation toxicity of chlorine dioxide gas was practically nontoxic.

2Acute oral is actually nontoxic Dosage Number

Animal (mg/Kg of weight) animals

Female 10000 10

weight(x±SD)(g)

Number of Death dead rate

animals (%) 0 0

0 day

7 days

14 days

19.0±0.2

28.5±2.6

32.7±2.9

mouse

The concentration of 100mg/L chlorine dioxide liquid and chlorine dioxide disinfection tablets is acute oral toxicity LD50>5000mg/Kg, so the concentration of 100mg/L chlorine dioxide and chlorine dioxide tablets are practical nontoxic substances.

Sample group

Negative control Positive control

1250 10 2500 10 5000 10

—— 10 40 10

10000
10000
10000

10000 10000

10 1.0±0.10 14 1.4±0.16 21 2.1±0.19

8 0.8±0.06 273 27.3±1.02

0.98±0.25 0.84±0.40 0.82±0.39

1.55±0.31 1.19±0.23

3No damage to the chromosome

Grouping

Dosage

(mg/Kg weight)

Number of animals

Number of PCEs inspected

Total number of micronuclear PCEs

Micronuclear cell rate (‰)

PCE/NCE

The mice in the three dose groups were negative for the micronucleus test of bone marrow bone marrow polychromatic erythrocytes, so chlorine dioxide did not have in vivo chromosomal damage to the test mice.

VI. Product picture
Disinfecting machine
mobile design, intelligent control, adjustable concentration of disinfecting gas, supporting our company’s proprietary disinfecting tablets, feeding once can be scheduled 0.53.5 hours, to meet 200m3 independent space disinfection, deodorization, mold removal, formaldehyde removal.

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