Salsnes - Model SF:2000 -Filter Systems

All the Flexibility you Need

With both Enclosed and Open modular systems, unlimited design flow capacity and the option to install indoors or outdoors, a Salsnes Filter system provides all the flexibility you need.

Our SFK systems are open for concrete channel installation and can be simply installed into a concrete chamber. SF systems are free-standing and enclosed requiring only a concrete slab for installation. These units can be easily retrofitted into an existing plant or integrated into new construction.

Municipal Wastewater Treatment

• Enhance primary treatment performance
• without adding chemicals
• Solids separation upstream of secondary processes such as:
• Oxidation Ditches
• Sequencing Batch Reactors
• Biological Aerated Filters
• Dissolved Air Flotation -Moving Bed Bio Reactors -Membrane Bio Reactors Primary treatment for new plants Grit removal after a coarse screen
• Increase primary or secondary process capacity
• Plant expansion where land is expensive or unavailable
• Dig-free, concrete-free solution for mountainous or earthquake-prone areas
• Combined sewer overflow (CSO) treatment
• Stormwater treatment

Industrial Wastewater Treatment

• Aquaculture
• Tanneries
• Pulp & paper
• Slaughterhouses
• Food processing
• Breweries and wineries

Air Knife Filtermesh Cleaning System

The built-in Air Knife is a patented filtermesh cleaning system that automatically cleans the rotating filtermesh using a blade of compressed air. Compared to scrapers, brushes or water-based cleaning systems, air is gentler on the mesh to prolong its life and keeps sludge drier for more effective dewatering.

Cogwheel and Filtermesh

The highly durable filtermesh is made of polyurethane. The way it’s mounted and tensioned to the cogwheel is patented – it improves performance and allows the filter to handle higher flow rates, increasing treatment capacity in a smaller footprint.

Integrated or Stand-alone Dewatering UnitStandalone-dewatering

To save space and money, the enclosed SF systems contain an integrated sludge thickening and dewatering process. Typical dewatering results are 20–30% DM. For larger installations, a stand-alone dewatering unit is available (shown below) to dewater sludge from multiple filters. It applies higher pressure to produce even drier sludge (20 –40% DM typical).

Hot Water Flush

A hot water flush is available to those facilities that have a high concentration of fat, oil and grease (FOG) in their wastewater. Operating only two – four times daily, the intermittent hot water flush effectively cleans the hard- to-remove FOG from filtermesh openings.

Fully Automated System

The Programmable Logic Controller (PLC) automates the system, making it ideal for remote or unstaffed locations. A sensor tells the PLC when to initiate filtermesh rotation which then automatically starts the Air Knife filtermesh cleaning system and sludge dewatering. The panel is rated IP65 and is located by the filter unit. Optional remote/control is available.

Quick Connects

You will find only quick connects on the system for fast and easy maintenance.

Compact Footprint
A Salsnes Filter system will typically use only 1/10th the land requirements of conventional primary wastewater treatment systems, making it ideal for those areas where land is expensive or unavailable.

Ease demand on downstream processes
When one step of the treatment process is overloaded, it can negatively affect the whole treatment process. A Salsnes Filter system can reduce loadings to ease demand and increase capacity of secondary treatment processes such as:

• oxidation ditches
• sequencing batch reactors
• biological aerated filters
• dissolved air flotation
• moving bed bio reactors
• membrane bio reactors

Cost Efficiency
Salsnes Filter has a 30-60% lower investment and operating cost as compared to a conventional primary treatment system.*

Unlimited Design Flow Capacity
The modular design of the Salsnes Filter system allows for installation configurations to serve any capacity requirement. Filters can perform together as one, sharing components such as the blower for the Air Knife filtermesh cleaning system.

Environmental benefits of a small carbon footprint
This carbon footprint analysis compares the Salsnes Filter SF:6000 to a clarifier in a 2 MGD (315 m3/h) municipal wastewater treatment plant in North America. It reveals that the Salsnes Filter system has a substantially lower environmental impact mainly because less concrete is required for installation.

Reduce volume of sludge for disposal
For many wastewater treatment plants, sludge disposal is one of their larger expenses. This leaves many facilities looking for ways to reduce their total sludge costs. The sooner sludge is removed from the process, the more potential cost savings it can trigger in downstream processes.

The Salsnes Filter system is designed to quickly thicken and dewater with its integrated processes to produce the driest sludge possible. The sludge exiting a Salsnes Filter system is 20 – 30% dry matter (DM), while primary clarifier sludge can be 2% DM.