Baihuipu Releases DTRO Membrane System for Leachate
Baihuipu has released a DTRO membrane system built for landfill leachate and other high-strength concentrate streams. The first skid was shipped this month to a municipal solid waste site where ageing leachate had pushed the existing treatment train beyond its design load. Disc-tube modules tolerate feed with high COD, colour and suspended solids, which means the plant no longer needs an oversized pretreatment stage ahead of the membranes. The system is offered as a standalone polishing step or as the concentration stage before evaporation and crystallization.
Key Features and Benefits
Open Channels That Resist Fouling
The disc-tube geometry keeps feed flowing across short, open channels rather than through narrow spiral spacers. On a leachate stream carrying several thousand mg/L COD and visible solids, that difference decides whether the membranes run for weeks or clog within days. Plants dealing with comparable loads face many of the same trade-offs covered in SiC Wafer Manufacturing Wastewater Recycling. We set out the wider process route in integrated MBR.
Operators can inspect and replace individual discs without scrapping a whole element. Cleaning intervals on the first delivered unit are tracking longer than the spiral-wound modules they replaced, with permeability recovering close to its starting value after each CIP cycle. Where several streams need joint treatment, Baihuipu Expands Overseas After-Sales Spare Parts Service is the more detailed reference.
A Practical Fit Before Evaporation
For sites heading toward zero liquid discharge, DTRO reduces the volume sent to the evaporator. Cutting concentrate volume by even a third shrinks both evaporator capital and the energy bill that follows it for the life of the plant. Plants dealing with comparable loads face many of the same trade-offs covered in membrane fractionation and salt reuse in agrochemical wastewater.
The skid ties into upstream MBR or biological treatment through standard flanged connections, and the control panel exchanges running states with the plant PLC. Integration is mostly pipework and signal checkout rather than new civil work.
What This Looks Like in Practice
For comparison, our 2022 project in Chengdu, Sichuan ran at 76 m³/day with influent COD near 2,000 mg/L and treated water around 300 mg/L. That is 85% removal in practice, not on paper.
| Location | Year | Flow | Feed COD | Treated COD | Removal |
|---|---|---|---|---|---|
| Chengdu, Sichuan | 2022 | 76 m³/d | 2,000 mg/L | 300 mg/L | 85% |
Figures are site-measured values from commissioned plants, not modelled estimates.
Built as a Complete Package
Feed pumps, cartridge filtration, high-pressure pump, membrane stack, CIP tank and instrumentation ship on one skid, pre-wired and pressure-tested in our Guangdong works before dispatch. Site work is limited to anchoring, piping and power.
High-pressure components are specified for leachate duty with corrosion-resistant wetted parts, and the design basis is agreed in writing from a full feed analysis before fabrication starts.
Technical Specifications
Standard DTRO configurations compared with the spiral-wound RO stage they commonly replace on leachate duty:
| Parameter | Spiral-Wound RO Stage | Baihuipu DTRO System |
|---|---|---|
| Tolerable feed SS | low, needs tight pretreatment | high, open-channel discs |
| Typical operating pressure | 40-60 bar | up to 120 bar configurable |
| Cleaning interval on leachate | days to 1-2 weeks | 2-6 weeks (site data) |
| Module maintenance | replace whole element | replace individual discs |
| Delivery format | site-assembled | pre-piped, pre-wired skid |
Why Choose Baihuipu as Your Manufacturer
Picking a supplier for this kind of plant is mostly about who carries the risk when something goes wrong. We have built this equipment for more than twenty years, and we are the ones who fabricated it, programmed the controls and will still answer the phone three years from now.
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.
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.
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.
Twenty-Plus Export Markets
We have shipped to the United States, Canada, Russia, Indonesia, India, Nigeria and Vietnam among others. Crating, export documentation and certificates are handled in-house, which keeps customs surprises to a minimum.
We Engineer the Whole Train
Screening, equalisation, biological or chemical treatment, membranes, evaporation, brine handling — the complete line comes from one organisation. Process design, mechanical, electrical and PLC programming sit under the same roof, so there is no gap for finger-pointing at handover.
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.
Getting Started
Send us a water analysis and your production profile and we will tell you honestly what the process should look like and roughly what it costs to build and run. Reach our engineering team on WhatsApp: +86 13631765076 or via hkbhp.com.
WhatsApp: +86 13631765076
Customer FAQs
What feed quality can a DTRO membrane system accept?
It is designed for streams that would foul conventional spiral-wound membranes: landfill leachate, high-COD concentrate and industrial brine with suspended solids. A full feed analysis is still the starting point for every design.
Does DTRO replace biological treatment for leachate?
Usually no. Most plants run MBR or biological treatment first to remove the bulk of the biodegradable COD and ammonia, then use DTRO to polish and concentrate. The two stages solve different problems.
Can the system connect to an existing evaporator?
Yes. DTRO is commonly installed ahead of evaporation to cut concentrate volume, which reduces evaporator size and energy use. We check the upstream and downstream hydraulics before fixing the design.
What spares should a leachate plant hold?
Discs, seals, high-pressure pump wear parts and dosing pumps. We ship a recommended spares kit with the skid and hold stock for everything we supply. The operating detail behind this sits in evaporation crystallization.
For adjacent technical angles, baihuipu upgrades ro brine concentration membrane system and Baihuipu Showcases Water Treatment Systems at Industry Expo covers the same equipment from a different duty.
