Client Profile:
The industrial park processes 1,500 m³ of industrial wastewater daily. The primary pollutants in the wastewater are COD, BOD, and trace amounts of heavy metals. The treated wastewater must meet discharge standards for local rivers and comply with international environmental regulations (EPA 40 CFR Part 403, EU Urban Wastewater Treatment Directive). Prior to the collaboration, the client faced two major challenges: First, the traditional chlorine disinfection process consumed large amounts of chemicals, and the resulting disinfection byproducts (such as trichloromethane) did not meet international environmental requirements, impacting the export of products from enterprises within the industrial park. Second, the COD and BOD concentrations in the wastewater fluctuated significantly, making it difficult to consistently meet local and international discharge limits.
Client Requirements:
- Advanced treatment of industrial wastewater to ensure COD ≤ 50 mg/L and BOD ≤ 20 mg/L, in compliance with EPA 40 CFR Part 403 and local Thai environmental discharge requirements, with no disinfection byproducts;
- Replace the traditional chlorine disinfection process to reduce chemical consumption, alleviate environmental pressure, and align with international green production principles;
- Provide ozone generator equipment certified to CE and FDA standards, featuring an English-language operating interface and supporting automated remote monitoring;
Solution:
Based on the client’s international compliance standards and wastewater treatment volume, we customized a dedicated ozone generator solution that balances compliance and convenience:
- Three CH-Y oxygen-source ozone generators (output: 200 g/h, CE and FDA certified) were selected, along with ozone contact tanks, exhaust gas treatment units, and a remote monitoring system. The equipment was installed at the industrial park’s wastewater treatment plant, and the user interface supports English;
Implementation Results:
Three months after the equipment was put into operation, all indicators met international and local standards, demonstrating significant results:
- Compliance and Standards: The COD concentration in the industrial wastewater from the industrial park has stabilized at 42 mg/L (down from 140 mg/L), and the BOD concentration has decreased to 17 mg/L (down from 30 mg/L). No disinfection byproducts were generated, fully complying with EPA 40 CFR Part 403, the EU Urban Wastewater Treatment Directive, and local environmental discharge requirements. This has helped enterprises within the industrial park successfully pass international environmental audits and ensured the export of their products;
- Environmental Protection and Energy Conservation: By replacing the traditional chlorine disinfection process, annual chemical usage has been reduced by approximately 12 tons, saving $120,000 in chemical costs. This also reduces water pollution caused by disinfection byproducts, aligning with international trends toward green production;
Customer Reviews：
The ozone generator solution fully meets our international environmental compliance requirements, with stable operation and convenient remote monitoring. The cross-border installation and after-sales service are professional and efficient, solving our worries about equipment operation and maintenance. We look forward to deepening cooperation and recommending your products to other industrial parks in Southeast Asia.
Mr. Somsak, Director of Park Operations
