CNC Die Casting Wastewater Treatment System Malaysia
Achieve DOE Compliance | Remove Oil, BOD, COD & Suspended Solids Effectively
Greentech Alpha Sdn Bhd specializes in the design and construction of CNC machining wastewater treatment systems that fully comply with Malaysia Environmental Quality Standards (DOE Regulations).
We support CNC workshops and precision engineering manufacturers by treating COD, BOD, Oil & Grease, and Suspended Solids (SS) efficiently — ensuring compliant discharge, stable operation, and reduced treatment costs.
TReaTEd DiSCHARGE LIMIT
Industrial Wastewater Discharge Limits (DOE Standard)
| Parameter | IER STd A | IER STD b | Biochemical Oxygen Demand (BOD) | ≤ 20 mg/l | ≤ 50 mg/l |
|---|---|---|
| Chemical Oxygen Demand (COD) | ≤ 50mg/l | ≤ 200 mg/l |
| Suspended Solids (SS) | ≤ 50 mg/l | ≤ 100 mg/l |
| Oil & Grease (O&G) | Not Detected (ND) | ≤ 10 mg/l |
Sources of CNC Machining Wastewater We Treat
a) Casting Wastewater
Generated from metal casting operations such as:
- Mold washing
- Casting line cleaning
- Equipment and tooling washing (This wastewater typically contains oil, suspended solids, fine metals, and high COD.)
b) Precision Cleaning Wastewater
- Produced from processes involving:
- High-precision part cleaning
- Degreasing
- Ultrasonic washing (This stream often contains detergents, solvents, surfactants, emulsified oil, and fine particulates.)
c) Die-Casting Wastewater
- Originates from: Die lubrication, Cooling tower/ cooling water blowdown, Mold cleaning (Characterized by lubricants, oily residue, metals, and elevated COD.)
d) Tumbling / Deburring / Polishing Wastewater
- Generated from: Tumbling, Grinding, Surface finishing of metal parts (This wastewater contains abrasive fines, metal particles, polishing compounds, and suspended solids.)
e) Floor Cleaning Wastewater
- Collected from: Plant floor washing Equipment area washdown (Usually contains oil traces, particulate matter, and general contaminants from machining operations.)
BOD & COD Treatment
Our Treatment Capabilities
Greentech Alpha systems are engineered to effectively remove:
COD & BOD
Oil & Grease (Free + Emulsified)
Suspended Solids (SS)
Metal Fines & particulates Detergent & Surfactant Residues pH neutralization & stabilization We deliver solutions that are reliable, easy to operate, and cost-efficient.
Specialized Coagulant ATC-101 for CNC Wastewater Treatment
High-Performance Coagulant for CNC Coolant, Oil-Based Wastewater & Tramp Oil Contamination
ATC-101 is a specially formulated industrial coagulant designed to treat CNC machining wastewater, especially streams contaminated with coolant, emulsified oil, tramp oil, grease, suspended solids, and high COD organics.
✔ Dedicated Formula for CNC Coolant Wastewater
✔ High COD & Oil Removal Efficiency
✔ Lower Chemical Consumption
✔ Fast Reaction Time
✔ Works with Any Existing Wastewater System
DAF, clarifier, settling tank, batch treatment, or chemical dosing system.
Treated CNC Wastewater by Adding Specialised Coagulant ATC-101
Raw BOD: 198 mg/l
Raw COD: 1,410 mg/l
Treated BOD: 16 mg/l
Treated COD: 114 mg/l
Semi-Automated Filter Press for CNC Wastewater System
Desludging Sludge Cake
Industrial Belt Oil Skimmer for CNC & Wastewater Systems
What Is a Belt Type Oil Skimmer?
A belt type oil skimmer is a simple, effective device designed to remove floating tramp oil from CNC waste.
How Belt Type Oil Skimmer Works
The oleophilic belt rotates through the coolant tank.
Floating oil sticks to the moving belt.
The scraper removes oil as the belt reaches the top.
Collected oil is discharged into a waste container.
Reduce manpower to scoop oil manually —continuous operation.
✔ Compact Design for CNC Oil Waste
Fits easily into tight spaces—ideal for Wastewater /modern CNC machines where sump area is limited.
✔ High Oil Removal Efficiency
Removes floating lubricant and tramp oil up to 20 litres per hour, depending on model and belt width.
Features & Benefits
In Greentech Alpha, we offer advanced solutions for industry wastewater treatment systems. We combine the best technologies to provide cost effective and efficient systems for our valuable clients.
Consultancy, Upgrading & Maintenance Service
- Consultancy & Technical Services related to Wastewater Treatment System (WWTP).
- Submission of Application to D.O.E. for Approval of Wastewater Treatment System (WWTP).
- Wastewater Treatment System (WWTP) Maintenance Service Contract.
- Repair, Upgrade, Modify & Retrofit existing Wastewater Treatment System (WWTP).
- Our experienced, competent and qualified engineers and technicians are fully capable to conduct classroom and on-site training programmes for your production, project and maintenance personnel on the operation & maintenance of Wastewater Treatment System (WWTP).
- Breakdown maintenance and on-site service.
- Our company offers a service that ensures a 10% annual reduction in the costs associated with the development.
