Project Description

The Problem

With the high levels of kitchen and beer waste in pubs, the sewage treatment plants can struggle to treat the waste. The waste is often high in organic strength, and high levels of fat, oil and grease from cooking can overwhelm normal treatment systems.

EnSo International has installed several wastewater treatment plants for rural pubs. Our customers include Hall and Woodhouse and Marstons groups.

EnSo international has developed an excellent reputation for the quality of the products and service which it provides. The fact that each system we install is designed to meet the specific requirements of the individual site means that we ensure that the end product is the ideal answer for you.

We understand the challenges which your wastewater treatment plants face, and using our wealth of experience as a company, we are able to provide the answers to these questions and challenges.

In addition to the design and manufacture of the sewage treatment plant, EnSo offers complete servicing and maintenance of all types of plants, by our team of British Water accredited engineers and can offer some extra options:

  • We can install one of our telemetry systems to provide a 24hour monitoring of your plant, thereby providing peace of mind that should something go wrong, we immediately know of the problem and can begin working on the solution for you.
  • As part of our servicing plan we also offer water testing, to ensure that the effluent is compliant with the criteria specified by the Environment Agency. Should the sample indicate a problem we are able to find a solution, and liaise with the EA where required

The Solution: The EnSo Ocean Professional

Ocean Professional Key Features

  • Bespoke design ensuring the best technology at the most competitive price for each project
  • Reliable and effective processes to achieve discharge qualities of 5:5:5 mg/l (BOD:SS:NH4-N)
  • Flexible Solutions:
    • Utilising existing site assets where possible to reduce overall costs
    • Upgrade of existing equipment
    • Stand-alone biological filters and nitrification filters are available
  • Below ground installation with minimal aesthetic impact (can be made suitable for installation under driveways and car parks)
  • Ocean Energy Saving Device available for up to 50% energy reduction at off-peak usage times
  • Low operation and maintenance costs
  • Full after sales support


The Ocean Professional Range

The Ocean Professional tank range offers EnSo International’s process engineering expertise, providing wastewater treatment solutions for applications up to and including 4000 population equivalent. EnSo selects the most appropriate product to meet the final effluent quality requirements and incorporates existing site assets into the finished scheme, where possible. Using this approach EnSo solutions are able to achieve discharge quality limits as low as 5:5:5mg/l (BOD:SS:NH4 N).

The EnSo team utilise various technologies within the Ocean Professional tank range to ensure the best design for the project.  These include Intelligent Flow Balancing (IFB), Submerged Aerated Filter (SAF), Moving Bed Bio film Reactor (MBBR), Sequencing Batch Reactor (SBR) and Membrane Bio-Reactor (MBR) technology housed within bespoke modular tanks. 

Each of the above processes offer distinct advantages over the other depending on the application, treated effluent quality, footprint and budget.



The EnSo Ocean Professional tank range has been designed with the developer and installer in mind.  All tanks are designed using robust and durable GRP or polyethylene.  Invert depths can be provided to suit the installation.  There is also a comprehensive set of installation guidelines provided with every Ocean Professional tank purchased.

Product Selection

The Ocean Professional tank range of products and services is application specific and it would prove impossible to generalise the description of plant under just a single category.  Individual projects are assessed and appropriate plant is selected using the most suitable technology and equipment.  EnSo is able to cater for whatever requirement you may have:

New Schemes

With all new schemes, EnSo offer the most cost effective solution using either modular or “uni-tank” designs.  EnSo view every project as a bespoke design to ensure that the system is designed to suit the application.  This approach prevents over-sizing which is common when using standard products and design criteria.

Upgrades and Refurbishments

If your existing sewage treatment system struggles to achieve discharge consent or where site occupancy has increased, you may benefit by upgrading or refurbishing your assets rather than replacing them with a brand new system.  EnSo are able to offer complete refurbishment or full upgrades to existing treatment systems through the addition of more efficient aeration arrangements and increased process capacity.  This is often the most cost effective solutions and increases the operational life of existing treatment works.

Grease removal units (GRUs) which can be fitted into kitchens and the provision of grease traps enable the higher strength fat, oil and grease to be separated out from the effluent entering the main treatment plants.

Tertiary Treatments

Should existing process treatment plant fail to meet with required discharge consent or if additional process capacity is required, EnSo are able to offer a number of different treatment options to add to your existing system to enable compliance with your existing or new consent to discharge conditions.  These include additional biological treatment and filters to reduce BOD, Ammonia, Suspended Solids, plus dosing to remove Phosphate and UV for disinfection.