Dilurit® BCS

High Performance In-situ Biocide

Biocides and disinfectants to protect your water systems from biological contamination

A process not properly treated can lead to technical issues, but also have a direct impact on the health of the population and high economic losses.
 
Kurita has a long experience in biocide treatment, controlling microbiology and biofilm in the process water system of various industries such as paper mills, chemical plants, steel mills, and power plants.
 
To complete our broad range, we developed an in-situ biocide system, controlled, regulated and dosed by Kurita’s innovative and tailor-made dosing equipment with the highest safety standards, which is characterized by its effortless & safe preparation, and its outstanding results.

Technology Benefits

Fast and easy detectable oxidizing biocide

Monochloramine will be generated with 100% conversion by the precursors

Decomposes 100% to inorganic compounds

Dilurit® BC S-System has extremely high disinfection rate against

Kurita’s advanced Dilurit® BC S-System is a mild oxidizer with a broad spectrum of efficacy, a long-lasting effectiveness and a good compatibility with other process chemicals.

Our team of experts have a proven knowledge in solving any microbiology-related problem. In addition, we supply state-of-the-art makeup and dosing equipment as well as on-line monitoring and control technology. 

Optimum required dosage is ensured by just in time reaction with Dilurit® BC S-System. As a result, economical and efficient use of the applied products and a smooth plant operation controlled by a continuous online monitoring system is achieved.

It is effective against the following microorganisms:

  • Any kind of slime-forming microorganism
  • Sulfate-reducing bacteria
  • Legionella
  • Algae
  • Yeast
  • Mould
  • Filamentous bacteria
  • Pseudomonas

 

Dilurit® BC S-System Key Advantages

  • Outstanding performance in a broad pH range (pH 6 -10) – even under challenging conditions  (neg. system ORP, high conductivity).  
  • State-of-the-art make-up and dosage system: 100 % conversion of the reactive components. No AOX (adsorbable organic halogens) and THM (trihalomethanes) formation.
  • A very selective oxidizer; no negative effects on process chemicals. 
  • Biology does not adapt itself to the biocide. Excellent performance in slime control.
  • Significantly reduced operating costs compared to other oxidizing systems.
  • Real-time process monitoring via CI- and ORP- measurements.

State of the art dosage system available in 3 different versions:

Kurita has developed 3 different dosing systems to optimize the treatment and to automatize the dosage and control of the product application. Each one of these systems is tailored to be able to treat a different kind of applications.

    • Economic: dosing pumps controlled by water counter (fixed ratio)
    • Comfort: Via cooling tower controller, pH-controlled, (fixed flow)
    • Total Control: “Own” controller, flow-rate via a pump, pH-controlled

We are of service to you

Tetsuya Teramoto

Tetsuya Teramoto

Managing Director, Kurita R&D Asia Pte. Ltd.

Mr. Tetsuya Teramoto has served as Managing Director of Kurita R&D Asia Pte. Ltd. since 2024. Since joining Kurita Water Industries in 2006, he has accumulated nearly 20 years of experience in technology strategy, research and development, and business innovation, including investments in startup companies.

Throughout his career, Mr. Teramoto has led development projects across Japan, China, and the United States. Since 2023, he has been based in Singapore, where he has focused on accelerating technology development aligned with ASEAN market needs, strengthening partnerships with startups, universities, and other ecosystem stakeholders, and driving the creation of emerging solutions that contribute to the Kurita Group’s growth.

Mr. Teramoto holds a Master’s degree in Biosystem Studies from the University of Tsukuba, Japan. Leveraging his expertise in both research and development and business strategy, he is committed to driving innovation that transforms technology into business value and sustainable growth opportunities.

Zackariya

Mohamad Zackariya

Managing Director, Kurita (Singapore) Pte. Ltd.

Mr. Mohamad Zackariya has served as Managing Director of Kurita (Singapore) Pte. Ltd. since April 2023, capping a distinguished career of more than 25 years with the company. A Singaporean national, he joined Kurita Singapore in 1998 as a Design Engineer in the Plant Division and progressed through a series of leadership roles, including Manager, General Manager, Director, and ultimately Managing Director. His extensive experience has played a key role in strengthening the company’s technical capabilities, customer partnerships, and business growth across the region.

Holding a Bachelor’s Degree in Mechanical Engineering from University of Moratuwa, Sri Lanka and a Post Graduate Diploma in Business Management from Singapore Institute of Management, Mr. Zackariya combines deep technical expertise with strong business leadership. He is committed to advancing Kurita’s mission of creating shared value through innovation, operational excellence, and sustainable water solutions that support customers and industries throughout Southeast Asia.

Masato Hirai

Masato Hirai

Chief Administration Officer, ASEAN Regional

Mr. Masato Hirai serves as ASEAN Regional Chief Administration Officer at Kurita, a role he has held since 2023. With more than 25 years of experience in corporate administration, financial planning, and business operations, he brings extensive expertise in supporting organizational growth, strengthening governance, and driving operational excellence across international business environments.

Mr. Hirai joined Kurita Group in 2021 and has held leadership positions in Japan, Malaysia, Thailand, and Indonesia. Throughout his career, he has been responsible for financial planning and analysis, business administration, and the management of cross-functional corporate operations. He has also supported overseas subsidiaries across Asia, Europe, and North America, contributing to the development of effective business practices and strong stakeholder relationships. Prior to joining Kurita, he held management and planning roles at several multinational manufacturing and chemical companies.

Known for his strategic vision and collaborative approach to leadership, Mr. Hirai is committed to strengthening organizational performance and creating long-term sustainable growth. Currently based in Indonesia, he leverages extensive international experience to support Kurita’s regional development and business transformation initiatives. He graduated from Hitotsubashi University, Japan, with a Bachelor of Social Sciences degree in 1999.

Toshiaki Nakai

Toshiaki Nakai

General Director, Kurita-GK Vietnam Co. Ltd.

Mr. Toshiaki Nakai serves as General Director of Kurita-GK Vietnam Co. Ltd., a position he has held since April 2026. With more than 20 years of experience at Kurita, he has developed extensive expertise in water treatment solutions, business development, and customer partnership management across a wide range of industrial sectors, including general manufacturing, oil refining, and steel production.

Since joining Kurita Water Industries Ltd. in 2004 as a Sales Engineer, Mr. Nakai has supported customers in optimizing water use, enhancing operational efficiency, and advancing sustainability initiatives. He later expanded his leadership responsibilities in Indonesia, serving as General Manager of PT. Kurita Indonesia from 2022 to 2025 and Senior General Manager from 2025 to 2026, where he contributed to the company’s growth and strengthened its market presence.

Mr. Nakai holds a Bachelor’s Degree in Agriculture from Kobe University, Japan, graduating in 2004.

Toshinori Maema

Toshinori Maema

President Director, P.T. Kurita Indonesia

Mr. Toshinori Maema has served as President Director of PT. Kurita Indonesia since 2025, bringing over 20 years of experience in sales, marketing, technical, and business leadership within the water treatment industry. Having worked across Asia, Europe, and North America, he offers a global perspective on customer engagement, organizational development, and sustainable business growth.

Since joining the Kurita Group in 2004, Mr. Maema has held leadership positions at various Kurita companies in China, Europe, Japan, and Avista Technologies in the United States, where he served as President & CEO from 2023 to 2025 to focus on global initiatives to expand the Kurita reverse osmosis chemicals business. With more than half of his career spent outside Japan, he has developed extensive experience in leading multicultural teams and driving business growth across diverse markets.

Mr. Maema holds a degree in Biochemistry from Aoyama Gakuin University and completed the Leadership on Change program at IESE Business School. Fluent in Japanese, English, and Chinese, with elementary proficiency in German, he is passionate about fostering collaboration across cultures. Outside of work, he enjoys a wide range of sports, including golf, baseball, soccer, and basketball.