Filtration System

Filtration

Filtration System

Rugged, Self-Cleaning, Highly Efficient

The Filtration System is engineered specifically for the tough challenges of seawater filtration. It includes two stages of filtration: coarse and fine. It offers a fully automatic self-cleaning operation and can handle heavy sediment loads. Another advantage is low operating pressure, which translates into lower energy usage.

  • Unique 40 micron woven screen technology

  • Fully automatic self-cleaning filter handles heavy sediment loads

  • Long service life due to anti-corrosion coatings and 316L stainless steel screens

  • Low operating pressures

  • Minimal flow loss during cleaning

  • Small footprint (filter can be installed vertically or horizontally)

The 2004 IMO International Convention for the Control and Management of Ships’ Ballast Water and Sediments stipulates in Section B that all ships shall remove and dispose of sediments from spaces designated to carry ballast water in accordance with the ship’s Ballast Water Management plan.

Many organisms have evolved a capacity to endure stressful environments such as low dissolved oxygen concentration, desiccation, or exposure to toxins. Filtration eliminates these large, hearty organisms and sediment prior to the main disinfection treatment. For more on the critical necessity for all ballast water treatment technologies to filter out these organisms see our white paper –“To Filter or Not to Filter.”

Ecochlor’s filtration of ballast water, specially designed to meet IMO D2 standards, is accomplished with unique 40 micron filtration technology that automatically cleans without interruption to ballasting operations. The filter element is fabricated from 316L stainless steel and the housings are specially coated for long term resistance to corrosion. Ecochlor’s space efficient filtration system can be installed either horizontally or vertically. For system specifications, see tables below.

Scaled and Configured for Every Installation

The filters can be installed horizontally or vertically, and are configured to match the ship size and ballast water flow rate. Additional filter sizes available.

  • 550 m3/hr

  • 1,200 m3/hr

  • 1,650 m3/hr

Flexible Modular Approach

The modular filtration system enables a vertical filter to operate in the exact same manner as a horizontally installed unit while significantly reducing its footprint where space is tight

Two Stages for Comprehensive Filtration

The Ecochlor Filtration System has two stages, coarse filtration and fine filtration. To prevent large objects – such as fish and foreign materials – from entering the filter’s cleaning mechanism, coarse filtering is carried out in the inlet chamber. Once the raw water passes through the coarse screen it emerges through the fine screen and flows into the system. The filtering process creates a “cake” of sediment on the surface of the fine screen surface. The filtration process creates differential pressure across the screen that rises as the “cake” thickness increases, until a predetermined value is reached (normally 0.5 bar) to activate the flushing process.

  • 1  Inlet
  • 2  Primary Coarse Screen
  • 3  Weaver-wire Screen
  • 4  Suction Scanner
  • 5  Proximity Nozzles
  • 6  Air Release Valve
  • 7  Outlet
  • 8  Flash Water Discharge Outlet
  • 9  Flush Valve
  • 10  Suction Pump
  • 11  Worm Gear and Motor

Automatic Self Cleaning

Once the differential pressure value is reached, self-cleaning starts automatically. This cleaning action involves suctioning dirt off the fine screen and flushing it out. Once a flushing command is given, the flushing valve opens to the atmosphere, causing a pressure drop in the flushing chamber that suctions dirt off the fine screen, sending it through the collector and flushing valve. Simultaneously, the worm gear of the electric motor spins the collector in a helical motion. The suction nozzles move across the entire screen surface while cleaning the clogged screen. A programmable controller monitors the process and, when necessary, activates intensive flushing cycles to overcome heavy dirt loads.

  • Filter Screen Designed for Ballast Water

    The unique weave-wire mesh filter screen is specifically designed for ballast water. It enables unparalleled zooplankton, phytoplankton and sediment removal rates.
  • Rugged Filter Screen Structure

    The filter screen is comprised of four stainless steel weave-wire screen layers. The weaves are sintered together to create a durable, reinforced filtering element that requires no additional support.
  • Continuous Screen Cleaning

    The unique suction nozzles allow 100% cleaning of the screen after each flush cycle, ensuring continuous, uninterrupted filter operation without risk of clogging.

Typical Ecochlor® System Specifications

    • Series 75
    • Model ES-400S-1.5
    • Capacity 400 m3/hr
    • Tank Size 1.5 m3
    • Treatment Footprint 8.5 m2
    • Supply Water 1.2 m3/hr
    • Filtration System
    • Quantity 1
    • Vertical Footprint (each) 0.3 m2
    • Horizontal Footprint (each) 1.7 m2
    • Power Requirements
    • Typical 4.8 kWh
    • Maximum 7.0 kWh
    • Series 100
    • Model ES-800S-1.5
    • Capacity 800 m3/hr
    • Tank Size 1.5 m3
    • Treatment Footprint 8.5 m2
    • Supply Water 2.7 m3/hr
    • Filtration System
    • Quantity 1
    • Vertical Footprint (each) 1.0 m2
    • Horizontal Footprint (each) 3.5 m2
    • Power Requirements
    • Typical 5.5 kWh
    • Maximum 9.1 kWh
    • Series 100
    • Model ES-1200S-2.0
    • Capacity 1,200 m3/hr
    • Tank Size 2.0 m3
    • Treatment Footprint 9.0 m2
    • Supply Water 7.7 m3/hr
    • Filtration System
    • Quantity 1
    • Vertical Footprint (each) 1.0 m2
    • Horizontal Footprint (each) 3.8 m2
    • Power Requirements
    • Typical 6.6 kWh
    • Maximum 10.2 kWh
    • Series 150
    • Model ES-2400-3.0
    • Capacity 2,400 m3/hr
    • Tank Size 3.0 m3
    • Treatment Footprint 9.5 m2
    • Supply Water 7.7 m3/hr
    • Filtration System
    • Quantity 2
    • Vertical Footprint (each) 1.0 m2
    • Horizontal Footprint (each) 3.8 m2
    • Power Requirements
    • Typical 7 kWh
    • Maximum 14.2 kWh
    • Series 200
    • Model ES-3300-4.0
    • Capacity 3,300 m3/hr
    • Tank Size 4.0 m3
    • Treatment Footprint 10.0 m2
    • Supply Water 14.0 m3/hr
    • Filtration System
    • Quantity 2
    • Vertical Footprint (each) 1.6 m2
    • Horizontal Footprint (each) 4.6 m2
    • Power Requirements
    • Typical 9.6 kWh
    • Maximum 24.0 kWh
    • Series 200
    • Model ES-4500-5.0
    • Capacity 4,500 m3/hr
    • Tank Size 5.0 m3
    • Treatment Footprint 10.0 m2
    • Supply Water 14.0 m3/hr
    • Filtration System
    • Quantity 2
    • Vertical Footprint (each) 2.0 m2
    • Horizontal Footprint (each) 5.6 m2
    • Power Requirements
    • Typical 10.4 kWh
    • Maximum 31.8 kWh
    • Series 250
    • Model ES-6600-6.0
    • Capacity 6,600 m3/hr
    • Tank Size 6.0 m3
    • Treatment Footprint 11.5 m2
    • Supply Water 26.0 m3/hr
    • Filtration System
    • Quantity 2
    • Vertical Footprint (each) 2.0 m2
    • Horizontal Footprint (each) 6.6 m2
    • Power Requirements
    • Typical 12.6 kWh
    • Maximum 40.8 kWh
    • Series 250
    • Model ES-8000-6.0
    • Capacity 8,000 m3/hr
    • Tank Size 6.0 m3
    • Treatment Footprint 11.5 m2
    • Supply Water 26.0 m3/hr
    • Filtration System
    • Quantity 4
    • Vertical Footprint (each) 2.0 m2
    • Horizontal Footprint (each) 6.1 m2
    • Power Requirements
    • Typical 12.0 kWh
    • Maximum 34.8 kWh
    • Series 250
    • Model ES-10000-6.0
    • Capacity 10,000 m3/hr
    • Tank Size 6.0 m3
    • Treatment Footprint 11.5 m2
    • Supply Water 26.0 m3/hr
    • Filtration System
    • Quantity 4
    • Vertical Footprint (each) 2.0 m2
    • Horizontal Footprint (each) 6.6 m2
    • Power Requirements
    • Typical 12.8 kWh
    • Maximum 42.2 kWh
    • Series 300
    • Model ES-12000-6.0
    • Capacity 12,000 m3/hr
    • Tank Size 6.0 m3
    • Treatment Footprint 11.5 m2
    • Supply Water 45.0 m3/hr
    • Filtration System
    • Quantity 4
    • Vertical Footprint (each) 2.8 m2
    • Horizontal Footprint (each) 6.6 m2
    • Power Requirements
    • Typical 19.8 kWh
    • Maximum 62.6 kWh