3. Vision
In the global market for Water, Recycling and Waste to Energy
Nijhuis Water Technology aims to be:
• Long term strategic partner offering innovative industrial solutions
Strength
• Long history with more than 2400 plants constructed worldwide
• Highly trained level of process-knowledge of many industries
• High application knowledge
• Client-oriented approach
4. General information
• 35 million € turnover
• 130 employees
• Industrial and municipal clients
• 95% of turnover is exported
• > 2400 references in > 50 countries worldwide
11. Service & After Sales
• Spare parts
• Process optimalisation
• Service contract
• Help desk
• Call-out service
• Technical assistance
• Upgrades
• Proces visualisation
• Remote control
• Training
12. Primary treatment
• Removal of coarse solids, suspended solids
and emulsified matters
Secondary treatment
• Removal of dissolved matters
Tertiary treatment
• Polishing to high (recycle) standards
13. Types of pollution
Pollution in
waste water
Organic
Inorganic
Suspended
discrete particles
Colloidal
opaque solution
Dissolved
clear solution
Fine particles
That do not settle by gravity
Example:
Remains of breadcrums,starch, etc
No particles visible
one colour
Example:
Dairy & Ice products, Proteins,
Fatts
Clear water
Example:
Dissolved sugars,salt
14. Primary treatment
Removal of coarse solids, suspended
solids and emulsified matters
• NFS – Filter systems
• Gravisep – Gravity separators
• NCF – Coagulation & Flocculation
systems
• Optiflot – Flotation systems
18. Optiflot – Flotation systems
• Induced Air Flotation IAF
• Induced Gas Flotation IGF
• Dissolved Air Flotation DAF (with and without plate packs)
• Dissolved Gas Flotation DGF (with and without plate packs)
20. Bioctor – Aerobic Biological Treatment Systems
• Bioctor S – SBR Sequence Batch Reactors
• Bioctor C – Continuous biological treatment
• Bioctor M – MBR Membrane Bio Reactors
• Bioctor B – MBBR moving Bed Bio Reactor
• Bioctor N – Biological Nitrogen Removal
• Clarifiers – activated sludge settling
• Clarifot – activated sludge flotation
21. Bioctor S – SBR Sequence Batch Reactors
• All operations in one tank
• Discharge of batch volume in 2 hours
• Very suitable for nitrification – denitrification – phosphor removal
• Easy in operation
• Can handle flow and pollution variations
• Single Batch, Double batch & Multiple batch variations
23. Bioctor C – Continuous biological treatment
• Continuous discharge
• Clarifier
• Activated sludge flotation
• Continuous feed / pollution load
• Potential risk of (filamentous) bacteria carry over (for Settler only)
• Water flows by gravity to several stages
• Large space required
25. Bioctor M – MBR Membrane Bio Reactors
• Continuous discharge
• Low space requirement due to high MLSS in aeration tank
• TSS level in effluent is nihil
• Low utility consumptions
• Membranes can be placed in and outside of aeration tank
• In-situ cleaning system for membranes
27. Bioctor B – MBBR moving Bed Bio Reactor
• Continuous discharge
• Aeration tank with carrier material
• Filter inside tank to separate media from effluent
• Aeration system medium to coarse bubble aeration
28. Bioctor B – MBBR moving Bed Bio Reactor Continuous discharge
29. Anoctor – Anaerobic Biological Treatment Systems
• Anoctor U – UASB Upflow Anaerobic Sludge Blanket systems
• Anoctor E – EGSB Extended Granular Sludge Blanket systems
31. Anoctor U - UASB
• Removal of soluble matter for high strength waste water
•Temperature 32 – 37°C
•No nitrogen removal
•Production of Biogas
•Square tank
•Round tank execution including plate pack
•Up flow velocity : < 1 m/hr
33. Sand filter
• Removal of remaining TSS after flotation
• TSS removal down to 3 to 5 mg/l
• Continuous system which is easy in
handling
• Self cleaning, no backwash needed
• No moving parts
34. Carbopure
Removal of difficult biodegradable COD
Removal of any residual cationic polymer
Activated carbon with NWT’ advanced white water
system
Micro organisms are developed
Removal by absorption and biodegradation
Highly extend lifetime of activated carbon
Very good effluent quality
aeration
CarboPure
Filter
feed
dischargeFeed /
Recirculation
Tank
Carbo Pure
Aeration
35. Disinfection
• Hypochlorite dosing
• Disinfection by chemical dosing (hypo chloride)
• Dosing can be controlled by Free Chlorine measuring
• Ozone
• Disinfection by dosing of Ozone
• UV
• Disinfection by UV light
• Suitable for clear water
36. RO membrane system
• Cartridge filter, 5 micron
• Anti-scalant + acid dosing to prevent Ca3(PO4)2 precipitation
• Spiral membranes designed for high recovery at low energy
consumption
• Fiberglass pressure vessels 600 psi
• High salinity resistant piping: S316L / 904L
• Automated biocide treatment (once per week)
• Manual Cleaning In Place (CIP), Automatic CIP can be offered
37. Sludge treatment
• To optimize sludge disposal
costs
Power & Heat recovery
•Waste & Co Digestion
•UASB
•EASB
•Sludge incineration
•CO2 reduction
39. Waste and Co-digestion
• Waste digestion
• Manure
• Food factory wastes
• meat related wastes
• concentrated food wastes
• Co substrate (Corn, Oil ..)
40. Waste & Co digestion - concept
Sludge
Industrial Waste
Agro Waste
Crops
Macerating
Sterilization
Hygenisation
Digesting
Gasmotor
Electricity
Fertilizer
Water
Heat
Biogas
Sludge
Dewatering
Mixing
Water
Treatment
Drying
Granulating
41. Digester
• Removal of high strength wastes
• Long retention time to breakdown long chains
• Double foil membrane roof, to provide gas buffer
Includes net for (limited) sulphide removal
• Mechanical mixing system
• Heat exchanger in tank thru tubes placed along wall
• Production of Biogas
As fuel for boiler (heat), CHP (gas engine) (energy + heat)
