Ozone generator of water treatment

Buyers must prioritize Ozone Output (g/h) and Ozone Concentration (mg/L). For industrial water treatment, a concentration of above 10% by weight is often required for efficient mass transfer. Ensure the unit utilizes High-Frequency Corona Discharge technology with ceramic or quartz dielectric tubes to ensure long-term stability and heat resistance. Additionally, verify the cooling system type (air-cooled vs. water-cooled); water-cooled systems are generally more efficient for continuous high-capacity operations.

It is critical to verify that the supplier holds ISO 9001 certification for quality management. For electrical safety and electromagnetic compatibility, the product should carry CE (Conformité Européenne) or UL (Underwriters Laboratories) markings. Since ozone is a powerful oxidant, ensure all internal components, especially seals and piping, are made of ozone-resistant materials such as 316L Stainless Steel, PTFE (Teflon), or Viton to prevent corrosion and leaks.

Small-scale units (5-50g/h) are ideal for swimming pool disinfection and bottled water sterilization. Large-scale industrial systems (1kg/h and above) are necessary for municipal wastewater treatment, textile wastewater decolorization, and COD (Chemical Oxygen Demand) reduction. For aquaculture, look for units integrated with Oxygen Concentrators to maximize dissolved ozone levels while maintaining safe oxygen saturation for aquatic life.

The Air Feed System is the most critical maintenance point; ensure the air dryer (refrigerated or desiccant) is functioning perfectly, as moisture can lead to nitric acid formation, which corrodes the electrodes. Regular cleaning of the discharge tube and checking power supply modules every 6 months is recommended. Top-tier suppliers on Made-in-China.com often provide modular designs that allow for the replacement of individual discharge cells without shutting down the entire system.

The main risks include damage during transit and technical non-compliance. Ozone generators contain fragile dielectric tubes; ensure the supplier uses IPPC-certified fumigated wooden crates with shock-absorbing foam. To mitigate technical risks, use Made-in-China.com's Secured Trading Service and hire a third-party inspection agency (like SGS or BV) to conduct a Pre-Shipment Inspection (PSI) to verify the actual ozone output against the datasheet.

Focus on the Total Cost of Ownership (TCO) rather than just the unit price. Negotiate for spare parts kits (e.g., extra fuses, gaskets, and sensors) to be included in the initial price. For orders exceeding 5 units, aim for a 10-15% discount or request an extended warranty period (e.g., 24 months instead of 12). Always clarify the Incoterms; for heavy machinery, FOB (Free On Board) is often preferred by experienced buyers to maintain control over shipping costs and logistics.

Never transfer full payment upfront. A standard industry practice is a 30% deposit and 70% balance payment against the Bill of Lading (B/L) or after a successful factory video inspection. Conduct all communications and payments through the official channels of Made-in-China.com to ensure your transaction is protected. Verify the supplier's Audit Report on the platform to check their factory size, production capacity, and export history.

Due to the weight and sensitivity of the high-voltage transformers, Sea Freight (LCL or FCL) is the most economical and safest method. Ensure the supplier provides a detailed Packing List, Commercial Invoice, and Certificate of Origin to facilitate customs clearance. Be aware of HS Code 842121 (Water filtering or purifying machinery); check your local tariff schedule as some countries offer duty exemptions for environmental protection equipment.