Advanced Treatment Solutions for Chromium Effluent Treatment Processes

Chromium (VI) pollution poses a significant challenge to water safety due to its extreme toxicity and persistence in the environment. Sunresin's cutting-edge treatment technologies offer effective, efficient, and environmentally friendly solutions to this critical issue.
Chromium (VI), a substance with a toxicity 100 times that of Chromium (III), is known for its carcinogenic, teratogenic, and mutagenic properties. Classified as a Class I controlled pollutant, it presents a formidable challenge in water treatment, especially under acidic conditions where its high oxidizing potential makes removal difficult. Cr(VI) exists in various forms such as CrO3, CrO42-, Cr2O72-, etc., depending on the pH value. Especially under acidic pH conditions, hexavalent chromium exists in the form of Cr2O72-, where its high oxidizing potential makes removal difficult.
Treatment Technologies for Cr(VI) removal
As regulations tighten and the urgency to address water pollution escalates, traditional treatment methods fall short. Methods for the detoxification treatment of hexavalent chromium in wastewater include physical, chemical, and biological processes, offering a promising solution to this pressing environmental concern:
  • Reduction Precipitation: Transforming Cr(VI) into less harmful Cr(III), this method highlights simplicity and effectiveness. Subsequently, Cr(III) is treated with quicklime or caustic soda to form Cr(OH)3 as a precipitate. While this method is simple and effective it relies on chemical sludge, large amount of reducing agents and necessitating secondary treatment impacting operational costs.
  • Selective Ion Exchange Resins: Leveraging ion exchange resins, this method excels in selectivity and capacity, ensuring harmful chromium is efficiently captured and water quality standards are met. Our selective resins are designed for maximum absorption and easy regeneration, underscoring our commitment to sustainability and effectiveness.
  • Membrane Separation: While membrane separation methods offer precision in filtering out contaminants through selective permeability, they come with significant limitations that affect their practicality and economic viability: lifespan, operational costs and overall cost efficiency. 
Sunresin's Resin Technology: A Superior Alternative
Sunresin's proprietary resin technology is designed to address the shortcomings of conventional water treatment methods, including membrane separation. Our selective resins offer unparalleled advantages:
  • High Selectivity and Capacity: Tailored to capture Cr(VI) with exceptional efficiency, our resins ensure thorough contaminant removal and water quality that surpasses standards.
  • Longevity and Cost-effectiveness: Engineered for durability and multiple regeneration cycles, Sunresin's resins minimize the need for replacement and reduce the overall cost of water treatment operations.
  • Sustainability and Compliance: With an emphasis on eco-friendly treatment solutions, our resin technology supports sustainability goals while ensuring compliance with stringent environmental regulations.
Real-World Success and Innovation for the Future
Sunresin’s commitment to innovation is reflected in our successful treatment of chromium-contaminated waters across various sectors. Our case studies demonstrate the effectiveness of our resin technology in meeting and exceeding water quality requirements, offering a testament to the technology's value and reliability.
As we look to the future, Sunresin remains at the forefront of water treatment research and development. We are continuously exploring new advancements in resin technology to enhance performance, sustainability, and cost-efficiency, ensuring our solutions lead the way in environmental protection and regulatory compliance.
Transforming Water Safety: A Sunresin Success Story
In a notable application of our resin technology, Sunresin addressed a challenging case of chromium-contaminated wastewater for a valued client. The initial state of the water, characterized by its distinctive orange-yellow hue, was primarily due to the presence of chromate and chromium ions—indicators of significant pollution levels. Through a meticulous process beginning with a specialized pretreatment, our innovative resin was employed to target and effectively eliminate the chromate from the water. Following this step, the application of Sunresin's LSC chelating resin played a critical role in removing the remaining cations, showcasing the resin's exceptional capability in purifying water. The result was a remarkable transformation, with the treated water successfully meeting the client's stringent quality standards. This success story not only demonstrates Sunresin's commitment to advancing water treatment technologies but also reaffirms our ability to meet and exceed our clients' expectations, ensuring their operational and environmental compliance.
Removal of chromium ions by Sunresin’s LSC chelating resin
Partner with Sunresin for Sustainable Water Treatment Solutions
Choosing Sunresin's resin technology means opting for a proven, efficient, and sustainable approach to water treatment. Our expert teams are dedicated to providing solutions that not only meet the current needs of our clients but also anticipate future challenges in water safety and quality.
Join us in our mission to safeguard water resources for generations to come, leveraging the power of innovative resin technology for a cleaner, safer environment.


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Latest News
2024 01
 Sunresin has been selected for the Hang Seng China A Specialised & Sophisticated 50 Index
On January 22, Hong Kong's Hang Seng Index Company launched the "Hang Seng China A Specialised & Sophisticated 50 Index", and Sunresin (300487.SZ) was successfully selected as a constituent stock. As of January 12, 2024, the proportion was 2.78%.
2023 11
 Sunresin Participates in Morgan Stanley 22nd Annual Asia-Pacific Summit
Sunresin, a leading technology company, was invited to attend Morgan Stanley's 22nd Asia-Pacific Summit in Singapore from November 15th to 16th. This summit is a pivotal conference for institutional investors in the Asia-Pacific region.

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