Baihuipu Expands Membrane CIP Field Service
Baihuipu has expanded its membrane CIP service with two mobile cleaning rigs and a small field team, following a run of enquiries from plants that had cleaned on a fixed calendar without checking what was actually fouling the membranes. The service starts with a review of normalised permeate flow, salt passage and differential pressure, then selects the cleaning chemistry from that trend and a foulant sample where one is available. The first assignments this month covered a brackish RO plant and a coastal UF line, both cleaned on site without removing the elements.
Key Features and Benefits
Diagnosis Before Chemistry
A drop in normalised flow with stable salt passage points to fouling; rising salt passage points somewhere else, and no amount of caustic cleaning will fix it. Reading the three trends together is the whole value of the first visit, and it regularly changes the plan the site had in mind. If your site also runs this kind of duty, Baihuipu Showcases Water Treatment Systems at Industry Expo covers the cost side of the decision in more depth. We set out the wider process route in desalination energy cost.
Where the cause is still unclear, we take a foulant sample from a lead element or a filter cartridge and run a simple on-site analysis for iron, manganese, organics and carbonate before choosing between high-pH, low-pH and chelating steps. The same selection criteria reappear in Baihuipu Starts Pharmaceutical Oxidation Pilot Line, which is worth opening alongside this one.
Mobile Rigs, No Element Removal
Each rig carries a heated tank, a low-pressure circulation pump, cartridge filtration, flow and temperature instrumentation and a dosing set. Cleaning solution is circulated through the installed vessels at controlled temperature and flow, so elements stay in place and the plant is not opened to the atmosphere. Where several streams need joint treatment, Baihuipu Releases DTRO Membrane System for Leachate is the more detailed reference.
The sequence records conductivity, pH, temperature and differential pressure throughout. That record tells the site whether the cleaning actually restored performance, rather than just confirming that chemicals were pumped around for two hours.
Leaving the Site With a Prevention Plan
A clean that restores flow but leaves the cause untouched will be needed again in six weeks. The handover note covers the likely root cause, the pretreatment or dosing change that addresses it, and a normalisation sheet the operator can keep using.
Where the data shows the membranes have reached the end of useful life, we say so. Replacing elements is sometimes the honest answer, and a cleaning contract should not pretend otherwise.
Technical Specifications
Service scope compared with a routine calendar-based clean:
| Item | Calendar-Based Clean | Baihuipu CIP Field Service |
|---|---|---|
| Trigger | fixed interval | normalised performance trend |
| Chemistry | standard caustic or acid | selected from diagnosis and foulant sample |
| Element handling | often removed | cleaned in place |
| Records | chemical consumption | pH, temperature, dP and recovery record |
| Follow-up | next scheduled clean | root cause and prevention plan |
Why Choose Baihuipu as Your Manufacturer
Choosing a manufacturer here comes down to one question: who is still accountable once the commissioning team flies home. Our answer is that we build and programme our own equipment, then stand behind it for the life of the plant.
Manufacturing Base in Guangdong
Owned production lines mean we control tolerances, materials and delivery. Standard modular units and bespoke skids are both built by our own people, so schedule commitments are ours to keep.
20+ Years Across Dozens of Industries
Experience matters most when your waste stream behaves nothing like the textbook example. We have dealt with toxic organics, heavy metals, extreme salinity and refractory COD in food processing, chemical manufacturing, electroplating, mining and municipal projects.
Complete Units and Turnkey Plants
Whether you need a single package unit or a turnkey installation with civil works, we deliver the entire treatment scheme. Our engineering team covers process, mechanical, electrical and automation so one party owns the outcome.
Certification and Export Practice
CE marking is standard and we work to ISO 9001 procedures. Where a project calls for specific material grades, pressure vessel certification or ATEX-rated equipment, we build to that standard and ship the full documentation pack.
Documentation You Can Actually Audit
Each system ships with as-built drawings, material certificates, welding records and a functional specification. If a client's own consultant wants to review the process calculation basis, we hand it over rather than treating it as proprietary.
After the Handover
Spares for everything we install are held in stock. Remote telemetry is available on most systems, and our service engineers commission, train your operators and turn out for emergencies.
Let's Look at Your Numbers
Share your water analysis and site constraints and we will give you a straight assessment of the process route and the realistic operating cost before you commit to anything. Contact our engineers at WhatsApp: +86 13631765076, or find us at hkbhp.com.
WhatsApp: +86 13631765076
Customer FAQs
How do we know when a membrane CIP service visit is needed?
Look at normalised permeate flow, salt passage and differential pressure together. A ten to fifteen percent drop in normalised flow or a clear rise in dP is the usual trigger, not a date on the calendar.
Can cleaning fix high salt passage?
Rarely. High salt passage usually points to membrane damage, oxidant exposure or a seal problem. Cleaning addresses fouling and scaling; a diagnosis step saves a wasted shutdown.
Does the plant have to stop production?
One train or bank is isolated at a time. On a multi-train plant the rest keep running, and the clean itself typically takes four to eight hours including soak and flush.
Do you supply the cleaning chemicals?
Yes, with the compatibility of the specific membrane and the site discharge limits checked first. We also leave the disposal and neutralisation procedure with the operator. The operating detail behind this sits in potable water quality testing.
For adjacent technical angles, membrane fractionation and salt reuse in agrochemical wastewater and Baihuipu Puts Textile Water Reuse System Into Operation covers the same equipment from a different duty.
