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Nijhuis i-NEC - Intelligent Electrocoagulation System
Currently many industrial companies and municipalities are facing challenges in treating the wastewater in an environmentally friendly manner reaching high effluent quality sufficient for discharge or even with a possibility for reuse, in this way contributing to the global water crisis. At present, electricity prices in certain regions around the world are being reduced, thus promoting electrical-driven rather than chemical-consuming process applications. For example, the COD load in the balance tank increases during production hours and decreases during cleaning. By using an intelligent dosing control system, costs for coagulation, flocculation and neutralization can be substantially reduced, because the system can deal more easily with fluctuations in pollution load.
i-NEC is designed to compete with the current chemical-intensive processes as well as with the conventional electrocoagulation systems. The reactor is distinguished with its advanced design of a closed system operated free of foam formation and gases build-up.
i-NEC is unique with the short residence time of few seconds, thus resulting in small footprint and possibility to treat high amount of wastewater. The system is very flexible and can be applied in a combination with different solid-liquidseparation techniques and further with variety of membrane technologies. The system has the potential to be applied as a pre-treatment solution as well as in a tertiary treatment step in a wastewater treatment concept.
- Chemical-free process
- Advanced reactor design
- Robust system
- Safe operation and flexibility of the system (allow combination with membrane technologies as a post-treatment due to no chemicals dosage)
- Real-time control and operation system
- Closed system – no odour issues
- No foam and explosive gas production due to operation under pressure
- Very short residence time - small footprintProvides peaceof mind
- Reduction of the total OPEX up to 50 % (due to chemical consumption) in comparison to chemical coagulation
- No dosing of hazardous coagulation chemicals
- Reduction of polymer
- Sludge produced with higher dewaterability
- Sustainable configuration without chemicals or reduced chemicals
- Improved quality of treated water
- Peace of mind for operator
i-NEC is based on the principle of production of coagulating agents in-situ by applying power, which further enable to remove like for example solids, oil and larger molecules from the wastewater.
The system is flexible and allows to be controlled and operated based on the influent pollution rate. In this way, the operational expenditures are minimized.