clearwater sewage treatment plant

ClearWater

For domestic dwellings and small scale commercial premises without access to mains drainage, the Clearwater sewage treatment plant provides an economical and environmentally way of disposing of wastewater.

Providing Full Treatment

Specifically designed to receive all of the waste water from the serving property including kitchen, utility and bathrooms, the Clearwater sewage treatment plant treats the receiving effluent at source, and discharges a final effluent which is clear, odourless and suitable for discharge direct to a natural watercourse or underground soakaway.  Under normal domestic conditions the Clearwater system will produce a final effluent of 20mg/lt BOD, 30mg/lt S.S., 20mg/lt Ammonia.

Certificated to European Standard EN-12566-3

In 2005, a new European Performance Standard was introduced.  EN-12566-3 requires manufacturers to submit their product to a testing facility that accurately measures the performance of treatment plants up to 50PE (population equivalent.

These tests identify how much pollution the treatment plant removes from the sewage, what level of maintenance is required, and what power is absorbed.

By holding EN-12566 certification, the Clearwater system is approved for an exemption from a permit to discharge under the new EPP2 environmental legislation.

Features & Benefits

  • Compact and simple design provides ‘value for money’;
  • Installed below ground providing low visual impact on surroundings;
  • Lockable child-proof pedestrian duty cover – safe for children and pets;
  • No mechanical or electrical components within the underground treatment zone;
  • The air blower is both quiet and economical with low running costs;
  • Supplied, installed and commissioned by experienced Mantair trained engineers;
  • Easy to maintain with annual desludge.

Three Stage Treatment Process

The Clearwater system is a ‘single tank’ system using a Biological Filter Process.  Within the Clearwater system there are three treatment zones.  Within the primary zone coarse solids are filtered and retained for gradual breakdown, whilst the resulting liquid is continuously distributed over a plastic biological suspended filter by an integral airlift, powered by a remote air blower.  The biological filter is designed to promote the growth of aerobic micro-organisms which ‘treat’ the liquids.  Within the final settlement zone fine solids settle to the floor leaving the resulting liquids as the treated final effluent, which is discharged from the system.

Selecting the right Clearwater

Clearwater sewage treatment plants are available in population equivalents of (PE) 6 – 18.  When sizing a new sewage treatment plant the British Water Flows & Loads Code of Practice should be used.  This Code of Practice provides the information required to ensure the correct size of treatment plant is installed.

Technical Data

Model Type

6

12

18

Maximum Number of Full- time Residents

p/day

6

12

18

Average Flow

m³/day

1.2

2.4

3.6

BOD Load

kg/day

0.36

0.72

1.1

Weight Empty

kg

200

217

445

Overall Diameter

mm

1850

1850

2700

Overall Depth

mm

2200

2700

2600

Inlet Invert

mm

1000

1000

1000

Inlet Invert to Base

mm

1200

1700

1600

Outlet Invert

mm

1100

1100

1100

Blower Motor Rating

Watts

60

60

150

Drainage Fitting

mm

110

110

110

 

NOTE:  The Clearwater system is also available with a 1500mm inlet invert.

All models are available with an integral pumped outlet for applications where discharge by gravity is not possible (IPS).

Design and Installation

As approved service provider for Clearwater products, MANTAIR provides a professional service for the distribution, installation, commissioning and maintenance of Clearwater systems.  This includes an initial site survey to discuss the requirements of the client and to obtain the information required to ensure a trouble free installation.

For further information and advice on selecting the appropriate Clearwater system, contact us on 01255 476467 or complete the form below.