01
Applications & Common Challenges
- For cleaning, etching, surface treatment, facility drainage and other electronics-manufacturing wastewater.
- Mixing acidic/alkaline, fluoride, phosphorus, nitrogen, metal-bearing and organic streams can increase chemicals, sludge and instability.
- Batch dumping, line change, emergency discharge and high-volume dilute streams must all enter the water balance.
02
Information Needed Before Design
- Source, process, collection route and schedule of each stream; normal, peak and emergency flow.
- Process-specific tests such as pH, COD, BOD, ammonia, TN, TP, fluoride, SS, metals and salinity.
- Existing assets, monitoring history, discharge destination and applicable industry, local, EIA and permit requirements.
- Footprint, shutdown window, sludge/concentrate route and upgrade, expansion or reuse target.
03
Typical Process Logic
- Source segregation & emergency retention → separate equalization → stream-specific pretreatment → combined equalization → physicochemical/biological treatment → polishing → discharge or evaluated reuse.
- Concentrated waste, complexed metals and refractory organics require separate review; biological compatibility must be verified.
04
Instrumentation & Control
- Use level, flow and selected pH/ORP signals to interlock pumps, mixers and dosing.
- Provide abnormal-stream diversion, emergency storage, water-quality alarms, trends and operator confirmation; online monitoring follows permit requirements.
05
Risks & Project Boundaries
- Final process selection depends on segregated sampling and, where needed, treatability testing; no universal removal rate is promised.
- Define collection-pipe changes, civil/corrosion work, chemicals, sludge/concentrate, online monitoring and acceptance testing.
- Check national/industry standards together with local, EIA and discharge-permit requirements.