When RO membranes need repeated replacement, filter media cakes or production needs more water, a new equipment quotation should begin with the existing problem and the future production requirement. These help distinguish consumable replacement, a pretreatment upgrade and a complete system replacement or expansion.
Separate the operating problem from the capacity requirement
Describe whether the present system can meet production demand but needs frequent maintenance, or whether a new production line has increased water consumption. If both apply, explain them separately. Include current and additional daily demand, peak flow, production shifts and the shutdown window available for the work.
Specify the water quality needed at the production use point. If your process or equipment has a written requirement, send that original specification. If it is not yet defined, explain the application and mark the missing information as to be confirmed.
Actual project: an aluminium-processing factory in Senegal
Qingze Systems supplied a 2 m³/h single-pass RO system for municipal feedwater with recorded conductivity of 650 µS/cm. The customer required product-water conductivity below 50 µS/cm. According to customer feedback, the earlier equipment had experienced membrane blockage after about ten days of use and recurring caking of sand-filter media.
The project reviewed front-end treatment, RO configuration and operating and maintenance requirements together. The customer installed the system with installation guidance and operating support. The customer later reported improvement in the recurring filter-media and membrane-blockage problems.
These conditions and qualitative feedback belong to this project. They are not a measured commissioning result or a performance guarantee for another factory. Conductivity alone does not determine hardness or the cause of membrane fouling.
Read the actual Senegal aluminium-factory project →
Send the existing information before requesting a replacement quotation
RO operation and maintenance planning: records, spares and support responsibilities →
- Feedwater: source, water-analysis report, sampling location, date and units. Describe different sources separately.
- Existing equipment: nameplates, membrane models, pretreatment units, controls and pipework photographs. Identify tanks and distribution pumps that may be retained.
- Problem history: when the change began, whether it was sudden or gradual, and which water sources or production shifts were involved.
- Operating records: original flow, pressure, temperature and water-quality readings, with their dates and measurement points.
- Maintenance history: what was replaced or serviced, when, and what changed afterward.
- Future requirement: production use, daily quantity, peak demand, operating hours, quality target and planned start date.
- Site boundary: country and city, electrical supply, access and maintenance space, storage, distribution, drainage and available downtime.
Send what you have and identify the missing records. Photographs help explain the installation but do not replace water-analysis and operating information. Unknown figures can remain unknown.
Compare three different supply scopes
- Membranes or consumables: identify the exact replacement items and which existing operating issues still need review.
- Pretreatment or a local upgrade: list retained equipment, new or replacement units, control interfaces and installation responsibilities.
- Complete replacement or expansion: define product-water quality, capacity, storage, distribution, electrical and pipework connections, installation and support.
These are enquiry scopes, not a diagnosis or a selected design. Recurring blockage does not by itself establish that the whole system must be replaced. The old nominal flow also does not establish that the same size is suitable for future production.
Compare equipment scope and site responsibilities → · Prepare your water-analysis information →
Copy this project brief
Production use and required water quality:
Existing treatment, storage and distribution:
Source water and available analysis:
Problem, start date and operating changes:
Maintenance already carried out and result:
Current and additional daily demand; peak demand:
Available electrical supply, installation space and downtime:
Scope you want to discuss:
Information attached and information still missing:
Send an English replacement or upgrade enquiry →
Qingze Systems is based in Dongguan, China. Project communication is available in English or Chinese. Use the enquiry form for your written summary; original water reports and site photographs can be sent to sales@qingzesystems.com.