Industrial Wastewater Treatment
Nutshell Filter (NSF)
World Technologies delivers Nutshell Filter (NSF) solutions, equipment and lifecycle support for reliable industrial water and wastewater operations in Singapore and the region.
Discuss Your Requirement
Nutshell Filter (NSF)
For most applications, first and second stage separation units are sufficient to meet the regulatory discharge requirements. However, when the discharge requirements are more stringent and require lower concentration of oil in water, nutshell filters are utilized. Nutshell filters use a mixture of nutshells as the filter media. Nutshells allow for the oil to collect on the surface of the nutshells while also being able to capture solids.
The nutshell filters have a simple process. Oily water enters the vessel where it passes through the nutshells under pressure. The oil and solids get trapped within the filters and the clean water exits the bottom of the vessel. To remove the oil and solids from the filter media, a backwash process is used. The backwash process consists of fluidizing the bed, removing the contaminated water, allowing the filter to settle and finally rinsing the filters to remove any contaminates that may still be present. The process uses at least two filters: one filter online and the second filter is being regenerated and on standby. Depending on your process requirements, WTPL can determine the appropriate number of filters required to provide the most optimized design. WTPL designs and manufactures nutshell filters that provide the following advantages:
- Efficient design
- Skid mounted packages
- Pecan and walnut shell blend
- High solids removal efficiency
- Process water used for backwash eliminating need for clean water source
- ASME coded vessels
- Can deliver as low as 5 ppm oil in water concentration
Frequently Asked Questions
What is Nutshell Filter (NSF) and how does it work?
Nutshell Filter (NSF) is an engineered water or wastewater treatment process selected to achieve a defined quality, recovery or discharge objective. Its operating principle and treatment stages depend on the application.
What contaminants or water-quality problems can Nutshell Filter (NSF) address?
Performance depends on the selected configuration. Water analysis is used to identify suspended solids, dissolved salts, hardness, oil, organics, nutrients, metals or other parameters that the treatment train must control.
How is a Nutshell Filter (NSF) system designed and sized?
Design uses flow and load profiles, laboratory analysis, target outlet quality, recovery, operating hours, redundancy, footprint, utilities, sludge or concentrate handling and lifecycle cost.
How much does Nutshell Filter (NSF) cost in Singapore?
Cost depends on capacity, feed quality, materials, automation, civil and installation scope, performance requirements and ongoing consumables. A site-specific assessment is needed for a reliable budget.
Can World Technologies upgrade or maintain Nutshell Filter (NSF)?
Yes. World Technologies can review existing performance and support suitable upgrades, equipment replacement, commissioning, troubleshooting, consumables and preventive maintenance.