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EOS horizontal settling tanks

EOS horizontal settling tanks
EOS

Horizontal settling tanks are devices used for the preliminary treatment

of sewage containing easily settling suspended solids with a density greater than 1 kg/dm3.

Horizontal settling tank cross-section

EOS settling tanks with horizontal flow are characterized by a simple design and ensure effective removal of suspensions for flows:

 

  • up to 130 dm³/s – design based on EU wells up to 3000 mm in diameter
  • above 130 dm³/s – design based on DZB tanks with diameters larger than 3000 mm (individually designed).

The settling tanks have a watertight concrete body with diameters available in EU wells or modular DZB reinforced concrete retention tanks, or they constitute a separate chamber of the DZB tank with a treatment system.

 

In cases of deep sewer placement, a reduction plate and a chimney of Dw 1000 rings can be used.

 

The inlet and outlet are typically located along the axis of the settling tanks. In selected types of settling tanks, the axis of the inlet and outlet can be deviated (details in the product sheets).

 

To automatically inform about the amount of accumulated sludge, alarm installations equipped with sludge level sensors (fig. 1) are used, which indicate the need to clean the settling tank. This significantly reduces operational costs.

Benefits of use

easy operation,

no replacement parts required,

can be installed within carriageway,

adjustable installation depth,

customisable to client needs.

Application

Depending on the type of catchment and the required level of sewage treatment, Ecol-Unicon offers:

 

Settling tanks are used for the preliminary treatment of sewage from:

 

  • roads
  • car parks
  • industrial yards
  • petrol stations
  • storage and transshipment areas
  • enclosed garages
  • car washes
  • urban catchments
  • ports, etc.

Additional configuration elements

Settling tanks in a treatment system can be connected to the Bumerang smart stormwater management system.

Operating method

The EOS settling tanks slows the flow and stores the sediment. General suspension and solid contaminants are retained by utilising the phenomenon of sedimentation. Here, the separation of two phases occurs: the sewage and the particles suspended in it with a density greater than the density of water.

 

The settling tank inlet is equipped with a deflector that enhances the efficiency of the device.

Operation

To reduce operating costs and improve environmental safety, it is possible to connect the settling tank to the SMARTSEP smart stormwater management system, equipped with sediment layer and overflow sensors. Continuous monitoring of the device’s operation minimises the need for local control of facilities and shortens the response time of technical services in case of a malfunction.