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Solution For the Earth DYC

Water Treatment Field

Introduction DYC Water Treatment Solution

Advantages DYC Water Treatment Solution
  • As a eco-friendly comprehensive water treatment and disinfectant, it has safe and strong disinfection.
  • It has excellent ability to remove algae due to high chlorophyll destruction effect.
  • It does not generate disinfection by-products (THMs, HAAs, HANs, etc.), so it is environmentally friendly and not toxic to fish.
  • It has excellent decomposition effect of Microcystin which is a toxin of blue-green algae.
  • The oxidizing power is not lowered in a wide range of PH, and the red tide control effect is excellent.
  • Formulation: Purified water (99.9 ~ 99.4%), chlorine dioxide (0.1 ~ 0.6%, concentration can be adjusted according to the use environment)

Mechanism of DYC Water Treatment Solution

Mechanism of removing major pollutants in water treatment of chlorine dioxide
  • Removal of metals and cyanide compounds : The strong oxidizing power of chlorine dioxide oxidizes metals such as iron and manganese dissolved in water into insoluble substances to facilitate removal, and oxidizes chemical substances such as highly toxic cyanide compounds to replace with non-toxic substances.

  • Removal of odor-causing substances : Chlorine dioxide is excellent in removing odors in water by oxidizing substances that cause odors.

Domestic and overseas application cases of chlorine dioxide


In the US EPA (certified 21164-3), chlorine dioxide does not generate THMs or HAAs, which are carcinogens when purifying drinking water. Therefore, as a safe disinfectant and a substitute for chlorine, it is accepted as a drinking water treatment, and products with a purity of 90% or higher are used in 700 to 900 water purification plants in the United States.


In Europe, chlorine dioxide is used as a drinking water disinfectant which is managed according to the regulations of the Biocidal Product Directive (98/8/EC). In May 2000, the guidelines were distributed to EU member states, and classified the disinfectants for drinking water in main category 1 of Annex V and general biocide products (Product-Type 5). Chlorine dioxide is used in more than 500 water purification plants in countries such as Germany, France and Italy, and many water purification plants in Europe are currently converting to chlorine dioxide treatment technology to minimize disinfection by-products. In France, chlorine dioxide is used to control organic substances and manganese, and in summer, it is used for the purpose of enhancing disinfection effect. Also in Germany, it is used as a post-treatment disinfectant.


In Japan, chlorine dioxide is mainly used for water treatment. In accordance with the provisions of Article 5, Paragraph 4 of the Waterworks Act (Showa 32 Act No. 177), chlorine dioxide was permitted as a water treatment agent for water facilities, and the usage standard is set at 2.0 mg or less per 1 liter during water purification or water treatment. In addition, according to the hygiene standards of the swimming pool (no compulsory standards), the chlorine dioxide concentration is 0.1 mg/ℓ or more, 0.4 mg/ℓ or less, and the chlorine acid concentration is 1.2 mg/ℓ or less when disinfection is performed with chlorine dioxide instead of chlorine disinfectant.

Republic of Korea

In Korea, water treatment agents are managed in accordance with the standards and labeling of water treatment agent in the Ministry of Environment Notification No. 187 (December 9, 2002). In domestic, chlorine dioxide was recognized as a water treatment agent (sterilization and disinfectant) under the Drinking Water Management Act issued by the Ministry of Environment in 1999 (Recommended using less than 1ppm). Among the water treatment ingredients that can be used in domestic, there are highly bleached powder, liquid chlorine, sodium hypochlorite, chlorine dioxide, and ozone as disinfectants. The disinfectant of these water treatment agents which is used to sterilize microorganisms in water and prevent contamination during the water supply process, is mainly chlorine. However, due to the recent generation of THMs during water treatment procedure and the generation of odors by phenol, there is a trend of using chlorine dioxide and ozone in parallel.

DYC Chlorine dioxide water treatment application plan

Chlorine dioxide can be used as a substitute for existing chlorine-based water treatment agents used in chemical treatment processes, and has superior efficacy than chlorine-based water treatment agents in terms of coagulationㆍoxidation ㆍ deodorization.


Academic data on the effect of chlorine dioxide about reducing TOC (Total Organic Carbon)
  • Trans Stellar Journal (2014. 4.) report about water treatment effect of chlorine dioxide : TOC in water decreases with increasing chlorine dioxide concentration → Results of research showing that chlorine dioxide is effective in reducing TOC in water.

Green algae removal test results of golf course hazard using chlorine dioxide proved the effect of controlling green algae
  • Location: M5 Hazard in Konjiam CC
  • Test Content: To remove algae using ClO2, we observe the ecosystem of algae distribution before the test. After that we observe the effect of algae removal and the presence of ecological abnormalities by directly administering chlorine dioxide to the hazard by concentration.

  • Before ClO2 administration
  • After ClO2 administration
Chemical wastewater experiment using chlorine dioxide

Test Contents: Using ClO2 to derive significant results in reducing chemical pollution as a result of sludge leachate treatment of industrial wastewater

Div. Control Primary treatment Secondary treatment
COD (mg/L) 4,700 2,910 (↓ 40%) 1,560 (↓ 70%)
SS (Turbidity) 1.337 465 (↓ 70%) 83 (↓ 94%)
Phenol (mg/L) 204.2 17.87 (↓ 92%) 0.35 (↓ 99%)
Cyanide (mg/L) 0.26 0.01(↓ 96%) 0.01 미만 (↓ 99%)
Papermaking wastewater experiment using chlorine dioxide
  • Type of waste : Papermaking wastewater (Contains bleach) 70%, Living sewage (30%)
  • Test contents : Using ClO2 to derive a significant effect on TOC reduction after chemical wastewater treatment
Div Control Treatment
COD (mg/L) 61.3 47.8 (↓ 22%)
TOC (mg/L) 3 35.9 27.8 (↓ 23%)