Intermediate Water Treatment Equipment | Reclaimed Water Treatment Package

Working Principle

Wastewater first enters the pre-treatment unit, where screens and an equalization tank catch large debris and balance out the flow. From there, it moves into the core biological zone (like a contact oxidation tank or MBR membrane tank), where microbes break down organics and knock out ammonia nitrogen. After that, solids and water separate through settling or membrane modules. The clear water goes into the advanced treatment unit (like multi-media filters, activated carbon, or ultrafiltration) and gets disinfected with UV or sodium hypochlorite. Most reclaimed water treatment packages run on automated controls, and the treated water can be reused for landscaping, toilet flushing, or washing down roads.

Application Fields

1.Residential areas: Treating bath and laundry wastewater for irrigation and flushing.
2.Hotels & complexes: Recycling guest room and kitchen wastewater to cut costs.
3.Schools & campuses: Meeting high demand for irrigation and flushing.
4.Industrial plants: Treating light wastewater for cooling makeup and cleaning.

FAQ

Q1: What standard can the treated water from intermediate water treatment equipment meet?
A: It generally meets the national standard for urban miscellaneous water quality (GB/T 18920), which covers toilet flushing, street sweeping, firefighting, and irrigation. If membrane processes are used, effluent turbidity can stay below 1 NTU, and it can even serve as makeup water for industrial cooling systems.

Q2: What processes are typically used in a reclaimed water treatment package?
A: The most common is biological contact oxidation plus filtration and disinfection, which works fine for standard domestic sewage. If space is tight and you need high water quality, MBR (membrane bioreactor) is usually the go-to—it combines biological treatment with membrane separation for great effluent and a compact footprint. The right choice really depends on the raw water and what you're reusing the water for.

Q3: Is operation and maintenance complicated?
A: Not really. The package usually comes with a PLC control cabinet that automates pump starts/stops, backwashing, and chemical dosing. Day-to-day maintenance is mostly about cleaning screen debris, checking blowers and pumps, and periodically cleaning or replacing the filter media. If it's an MBR system, you'll need to do chemical cleaning on the membrane modules from time to time.