Gotion Morocco ESS Line Slurry Wastewater Reuse Project
Gotion's Morocco facility produces lithium-ion cells for power and energy-storage applications. The slurry mixing lines generate NMP-laden wastewater with suspended solids and dissolved metals. Baihuipu supplied a treatment and reuse system that removes contaminants and returns high-quality water to the process.
Wastewater Characteristics from Battery Slurry Production
Slurry mixing and tank washing produce wastewater containing NMP solvent, binder residues, lithium salts, and carbon black.
The effluent is high in COD, suspended solids, and conductivity, making direct discharge or reuse impossible without treatment.
A multi-stage process is needed to recover NMP, remove metals, and produce reusable water.
The system combines chemical conditioning, coagulation-flocculation, dissolved-air flotation, and ultrafiltration.
Activated carbon and ion-exchange polishing steps further reduce residual COD and trace metals. The process logic sits close to what is described in Ethylene Cracker Effluent Treatment, particularly on the pretreatment side.
A reverse-osmosis unit produces permeate suitable for cooling-tower makeup or process rinsing.
Equipment Supplied and Installation
Baihuipu supplied reaction tanks, DAF units, multimedia filters, UF membranes, RO skids, and chemical dosing systems.
All equipment was containerized and shipped to the Morocco plant in loading sequence.
Local installation crews were supported by Baihuipu drawings, video conferences, and on-site supervision during critical tie-ins.
Commissioning and Performance
The system was commissioned in stages, starting with hydraulic testing and progressing to chemical dosing optimization.
Measured Results from Plants We Built
We commissioned a 10 m³/day plant for this duty in Fuyang, Anhui back in 2022. Feed COD came in around 17,938 mg/L and left at 150 mg/L — 99.2% removal. The train was Fenton + UASB anaerobic + denitrification + contact oxidation + MBR.
| Location | Year | Flow | Feed COD | Treated COD | Removal |
|---|---|---|---|---|---|
| Fuyang, Anhui | 2022 | 10 m³/d | 17,938 mg/L | 150 mg/L | 99.2% |
Figures are site-measured values from commissioned plants, not modelled estimates.
Water recovery exceeded the design target, reducing the plant's freshwater demand.
Concentrate streams were directed to the customer's hazardous-waste handling route, keeping discharge compliant.
Project Significance
This project demonstrates Baihuipu's ability to serve global battery manufacturers outside China.
It validates our treatment package for NMP-bearing wastewater and water reuse in the lithium battery sector. The process logic sits close to what is described in Tyre Recycling and Pyrolysis Plant Wastewater system, particularly on the pretreatment side.
Gotion Morocco is now one of the reference sites for Baihuipu's battery-industry water solutions. Plants dealing with comparable loads face many of the same trade-offs covered in Biogas Plant Digestate Liquor Treatment.
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.
Own Factory, Real Capacity
Tanks, skids, control panels and membrane housings are built in our own Guangdong facility. Nothing critical is subcontracted, which is why we can commit to delivery dates and hold quality across a batch instead of hoping the shop floor gets it right.
Two Decades of Field Data
Food and beverage, chemicals, electroplating, textile dyeing, mining, municipal work — we have commissioned across all of them. The useful part is not the project count, it is having seen how plants fail in year seven and designing those failures out.
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.
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.
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.
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
Frequently Asked Questions
What does it cost to run, per cubic metre?
Energy dominates, then chemicals, then sludge disposal. We give you a per-cubic-metre breakdown during proposal so you can compare it against your sewer charge — treating too aggressively is a common and expensive mistake.
Do you handle installation and operator training?
Every unit we supply is commissioned by our own engineers. Training happens on site with your actual operators, and the O&M manual covers routine work plus troubleshooting. Remote diagnostics through the control system are included for the first year.
What happens if the incoming battery slurry water load exceeds the design figure?
Load swings are the most common reason plants underperform. We set the design envelope from your worst-case samples, not your average ones, and specify enough buffer in the biological stage to ride out shocks. If your process genuinely shifts up permanently, we can usually add capacity in stages.
