Application of Biocides and Algaecides in Circulating Water Systems – Kerui Chemical Supports Safe Summer Operation

 In summer, high temperatures cause rapid microbial growth in circulating cooling water systems, leading to biofouling, pipe blockage, and under‑deposit corrosion. Biocides/algaecides are divided into oxidizing and non‑oxidizing types, typically applied via shock dosing or alternating dosing strategies.

Kerui Chemical (krhedp.com) offers a biocide/algaecide product line including:

  • Oxidizing biocides: Such as high‑efficiency chlorine tablets, bromochlorodimethylhydantoin (BCDMH), chlorine dioxide precursors – broad‑spectrum, fast‑acting.

  • Non‑oxidizing biocides: Isothiazolinone, quaternary ammonium salts, glutaraldehyde – strong biofilm penetration. Alternating with oxidizers prevents microbial resistance.

  • Slime stripper: Special surfactant formulation that quickly removes attached biofouling and cleans heat exchanger surfaces.

Recommended program: In summer, alternate oxidizing and non‑oxidizing biocides 2–3 times each per month, plus slime stripper once a month. For detailed program design, consult the technical team at krhedp.com.

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