With increasingly stringent environmental protection requirements, businesses and public places are paying closer attention to the impact on the ecological environment when carrying out disinfection work. Traditional disinfection methods are prone to generating byproducts during use, and long-term use may lead to residues and ecological risks. Shandong Huashi Pharmaceutical has been engaged in the production and application of disinfection products for over 40 years. Its Xiuba chlorine dioxide series products have demonstrated low environmental pollution , easy decomposition, and compatibility with environmental protection requirements in practical applications, and are widely used in various green disinfection scenarios.

Advantages of Chlorine Dioxide in Green Disinfection

Some traditional disinfectants we use daily can easily generate trihalomethanes and other substances upon contact with water or organic matter, putting stress on aquatic and soil environments. The use of some fumigation disinfection products has been restricted due to their environmental impact.

Chlorine dioxide is internationally recognized as an A1-level safe disinfectant , offering significant advantages in environmentally friendly disinfection:

1. It is not easy to produce harmful byproducts

It achieves disinfection through oxidation, without undergoing chlorination. Under normal use conditions, it will not generate carcinogenic, teratogenic , or mutagenic substances. Xiuba chlorine dioxide has been tested and proven safe for use, meeting internationally accepted safety standards.

2. It can decompose naturally in the environment.

After disinfection, it will gradually decompose into water, oxygen and trace amounts of chloride, and will not accumulate in the environment for a long time. It is relatively friendly to soil, water sources and microbial communities, and can be used in occasions with high environmental requirements such as drinking water, food processing, and aquaculture.

3. Small dosage, low environmental impact

Disinfection needs can be met at lower concentrations, and less chemicals are used in actual use, which helps reduce emissions and is in line with the development direction of low carbon and environmental protection.

4. It can replace some highly polluting disinfectants

In water treatment, public environments, food processing plants, soil treatment and other scenarios, it can replace traditional products such as sodium hypochlorite and methyl bromide, meeting disinfection needs while reducing environmental impact.

Application of Xiuba Chlorine Dioxide in Real-World Scenarios

Shandong Huashi Pharmaceutical Co., Ltd. is a high-tech enterprise and a specialized and innovative enterprise in Shandong Province. For many years, it has focused on the research and development of chlorine dioxide disinfection products and has formed a complete system. The Xiuba brand includes powder, tablets, solutions and matching generators, which can meet the environmental protection and disinfection needs of different scenarios.

1. Drinking water and wastewater disinfection

When used in scenarios such as waterworks, secondary water supply, hospital sewage, and industrial wastewater, it can effectively kill microorganisms, decompose some pollutants, produce few by-products, and the effluent can meet the discharge and use standards. It is also a product selected for central emergency reserve materials.

2. Food processing and public environment

When used for disinfection in food factories, tableware, and fruits and vegetables, residues are easy to remove and will not affect product quality; when used in environments such as stations, offices, and homes, it has low irritation, a mild odor, and will not cause secondary pollution.

3. Soil and ecological restoration

It can replace some highly toxic soil treatment products, suppress soil-borne diseases and nematodes, have little impact on soil structure and beneficial bacteria, and can also help degrade some pesticide residues, making it suitable for use in ecological agriculture.

4. Industrial circulating water and aquaculture

It can control the growth of bacteria and algae, reduce biological slime, and has low corrosiveness to equipment; when used in aquaculture, it has high safety for fish, shrimp and other organisms, while improving the water quality environment.

III. Chlorine Dioxide Residue Detection and Safety Standards

In practical use, whether residues meet standards directly affects environmental safety and effectiveness. Based on our field experience, we have compiled the commonly used testing criteria, methods, and control ranges as follows for frontline personnel to refer to and implement directly.

Routine testing is mainly based on three standards: first, the detection of chlorine dioxide and chlorite in water quality is carried out according to the continuous titration iodometric method of HJ551-2016; second, the free chlorine and total chlorine in water are detected using the DPD spectrophotometric method of HJ586-2010; and third, the hygiene requirements of the product itself are in accordance with GB26366-2010 "Hygienic Standard for Chlorine Dioxide Disinfectant".

Three common on-site testing methods are used: for sewage and industrial wastewater with high concentrations, the iodometric method is generally used, which provides stable and repeatable data; for water samples with lower concentrations, such as drinking water and tap water, the DPD spectrophotometric method is often used, which is quick to learn and provides intuitive results; and for on-site inspections, portable detectors are mostly used, which can read the values in a few minutes, making it convenient to adjust the dosage in a timely manner.

Based on national standards and practical experience, the following range can be used for residue control: chlorine dioxide in drinking water should be controlled at 0.1–0.8 mg/L, and chlorite should not exceed 0.7 mg/L; residue at sewage discharge outlets should not exceed 0.5 mg/L; for food processing and surface disinfection, if there is no visible residue and no obvious irritating odor after the action is completed, it can be used normally.

Shandong Huashi Pharmaceutical's Practices in Green Disinfection and ESG

Shandong Huashi Pharmaceutical has long been deeply involved in the disinfection industry and is a standing committee member of the Expert Committee on Disinfection Technology and Application of the China Health Supervision Association. It has always placed safety, environmental protection, and social responsibility in an important position.

The company holds a total of 35 patents. Its technical lead was deeply involved in the drafting and revision of the national standard for chlorine dioxide, continuously optimizing the product's environmental friendliness through formulation and processes to reduce byproduct and residue risks. Production operates strictly in accordance with the ISO14001 environmental management system and the ISO9001 quality management system, with full control over the entire process from raw material warehousing to finished product delivery, minimizing the environmental impact of production.

During critical periods such as public health emergencies and floods, we have donated disinfection supplies to the front lines on multiple occasions, fulfilling our corporate responsibility with practical actions. We have also received expressions of gratitude from the State Council's Working Group on Novel Coronavirus Pneumonia Response and the Zhong Nanshan Medical Foundation of Guangdong Province.

For our customers, we insist on providing full-process follow-up services. When encountering issues such as usage questions, dosage adjustments, and residue testing, our team will promptly provide on-site guidance, implementing standard procedures down to the practical details, so that users can use the products compliantly and with peace of mind.

Green disinfection is transitioning from an industry option to a necessity. Chlorine dioxide, due to its low byproducts, biodegradability, and environmental friendliness, is finding applications in an increasing number of scenarios. Shandong Huashi Pharmaceutical, with its flagship product, Xiuba chlorine dioxide , continuously focuses on environmental protection, safety, and stability, providing practical disinfection solutions for drinking water treatment, food production, ecological agriculture, and public environments. The company accompanies enterprises on their ESG development path, working together to protect the ecological environment.