Category Archives: KEE NuTech Tertiary Filters

KEE’s Commitment to Environmentally Sustainable Procurement and Fair Trade

One of KEE’s core company values focuses around Environmental Sustainability. As a business, we recognise our obligations to consider the environmental impact the materials we source and the products we produce have on the environment and, we aim to reduce the impacts & ensure environmental sustainability.

Fairtrade is about better prices, decent working conditions and fair terms of trade. It’s about supporting the development of thriving communities so that they have more control over their futures and protecting the environment in which they live and work.

KEE Process Ltd & KEE Services Ltd aim to ensure that we will play our part in reducing risks:

  • Use fewer resources and less energy through continuous improvement and the use of innovative solutions.
  • Procure all timber and timber products from legal and sustainable sources, and procure with a preference other construction materials from recognised responsible sourcing schemes.
  • Specify and procure materials and products that strike a responsible balance between social, economic and environmental factors and generate benefits to society and the economy.
  • Use resource-efficient products and give due consideration to end-of-life uses.
  • Influence, specify and source increasing amounts of materials which can be reused, and consider future deconstruction and recovery of resources to embrace the circular economy to leave a sustainable legacy across the built environment.
  • Where possible, provide opportunities for small and medium sized enterprises (SMEs) increase the use of social enterprises, support local employment, diversity and training and work collaboratively with the voluntary sector, especially those near to our offices and operations.
  • Ensure that fair contract prices and terms are applied and respected, and that ethical, human rights and labour standards are met, in line with the United Nations Global Compact principles.
  • Source goods, works and services that embody our environmental policy, health & safety policy and support the delivery of our Sustainable Development Strategy.

We believe our commitment to these values is one of a number of ways in which KEE, everyone within the company, and all our customers can demonstrate social, environmental and economic responsibility. Our business like all others changes and evolves over time, but our core values remain the same.

For more information, please call 01296 634500 or visit our website.

 

 

 

 

Over the years, KEE Process Limited has produced and delivered numerous Wastewater Treatment Plant projects in Northern Ireland and Ireland, using local M & E contractors.

In the Republic of Ireland and Northern Ireland many of KEE’s projects have been using local M & E contractors who offer total supply and installation packages to clients, with fully comprehensive after sales support. Some of these projects include plant built for the following sites:

1.   Large Hotel, Co. Wicklow.

The hotel already had a wastewater treatment plant but they decided to build a new 40-bedroom lodge on site and therefore needed a plant to treat all the existing flows plus the flow from the planned expansion. The main requirements of the client were:

The final effluent required Total Nitrogen and Phosphorus reduction and needed to consistently comply with the onerous discharge license of BOD < 20 mg/l, SS < 30 mg/l, COD < 80 mg/l, NH4-N < 20 mg/l, NO3-N (Nitrate Nitrogen) < 5 mg/l, Phosphate as PO4 < 12 mg/l, FOG (fat, oil and grease) < 20 mg/l and Detergent (MSAS) < 1 mg/l.

The plant was to have low operational and maintenance costs.

The plant supplier was to be able to provide complete service to include planned preventative and emergency maintenance, process and operation maintenance and effluent sampling.

The KEE’s proposal included supply, delivery, installation and commissioning of a 60m3 primary settlement tank, Module DC16 Rotating Biological Contactor and ST6 hopper bottom GRP final settlement tank. All this equipment was factory built and delivered to site ready for installation on concrete slabs.

This plant was installed and commissioned in 2003. It has operated extremely well mechanically and has delivered excellent process performance since start-up. The total electricity costs for the plant is less than EUR1,000 per annum.

2.   Golf Club, Co. Cork

This was a design and build turnkey contract and KEE who were process partners in the project. The discharge license was direct to the watercourse and specified a BOD < 20 mg/l, SS < 30 mg/l, NH4-N < 20 mg/l & Phosphate as P < 2 mg/l.

KEE supplied their compact single piece NuDisc® Model 1200.

3.   Golf Club, Co. Dublin

During the refurbishment of the clubhouse, on-site sewage treatment plant and disposal systems were required. The discharge license specified a BOD < 20 mg/l, SS < 30 mg/l & NH4-N < 10 mg/l, NO3-N (Nitrate Nitrogen) < 15 mg/l, Phosphate as PO4 < 5 mg/l and FOG (fat, oil and grease) < 10 mg/l.

KEE Process Ltd designed the process and supplied and installed a single-piece compact packaged plant NuDisc® F13N with inbuilt de-nitrification stage and phosphate removal stage.

This contract also included the design and installation of an inlet pumping station and a sub-surface percolation area.

4.   County Council, Ireland

This was an installation for a municipal treatment works for a Southern Ireland County Council for 1000 PE. The flow to the works are combined with surface water and municipal wastewater with a discharge license for BOD < 20 mg/l and SS < 30 mg/l.

KEE supplied their packaged modular treatment system and the contractor led the contract for installation and commissioning.

For more information on our Wastewater Treatment Technologies, please phone on 01296 634500 or visit our KEE Process Website.Specialists in Domestic & Industrial Wastewater Treatment

 

Industrial Wastewater Disposal and Treatment Options – Back to Basics – A Practical Approach from KEE Process Limited

What are the Options

Brewing, winery, soft drinks manufacture, food preparation production and packaging (baking, ready convenience meals, abattoir, meat, poultry and vegetable), dairy (milk processing, cream, cheese and yoghurt production), commercial laundries, pharmaceutical, petrochemical and many other industries are large users of water. This results in large quantities of heavily polluted wastewater for disposal.

UK Water companies and the public bodies responsible for collection, drainage and treatment of wastewater have strict controls on the quantity and the quality of industrial and trade wastewater being discharged into public sewers. Legislation supports them in this. Direct discharge to a watercourse is even stricter and is normally monitored by the National Environmental Agencies and the Environment Agency in the UK. Penalties for transgression can include prosecution, fines, financial loss and can, in some cases, prohibit operations.

Industrial wastewater discharge disposal options

Industrial wastewater discharge disposal options

Audits

It is always advisable to carry out an evaluation of the processes involved in the core business of an organisation to identify sources of wastewater. An audit would help reduce waste/wastewater and disposal costs, quantify flow rates, solids and organic loads and characterise the wastewater to provide the necessary data for analysing the available disposal options and optimise the design of any on-site treatment plant.

It is useful to be subjective when carrying out an audit to ensure that good housekeeping practices are identified to reduce unnecessary waste which would add to the costs of disposing wastewater generated on site. Process audits should be aimed at identifying the waste, excess use of water and energy. Simple actions, such as installations of energy-saving devices or taps and hose controls and careful disposal of solid waste, can produce both financial and environmental benefits. It would also help to reduce the size of an on-site treatment plant if one was planned and this would result in capital cost savings.

An audit would lead to evaluation of volumetric and organic mass loads for design purposes and would aid in characterising the nature of the waste, to optimise the design for on-site treatment plants.

Public Sewer or Watercourse

Public sewers are convenient for disposal if nearby. Quantity, strength and characteristics of the wastewater need to be considered and consented by Authorities or the Water Company in the UK. If approval is granted and the wastewater meets the criteria set, then sewer disposal would be an obvious choice, but this comes at a cost. High COD (Chemical Oxygen Demand) and suspended solids would lead to high costs in discharging to sewer and reducing these parameters could make significant savings. Partial or full onsite treatment would bring about cost savings to sewer discharge but needs justifying through quantification.

Hygiene versus Convenience

With the food processing, beverage and dairy industry, hygiene is of paramount importance. On-site wastewater treatment may be perceived by management as presenting problems although the risks are small. It is vital that the Operatives normally involved in the process part of the industry, do not need to visit the wastewater treatment plant and the risks to main operation therefore are contained and the operation of the wastewater plant becomes one of non-core features. This can be achieved by having the treatment plant operation undertaken by the maintenance department of the industry or independent operators such as KEE Process Limited who would provide a turnkey solution for designing, supplying, installing and operating a plant for a Client.

Treatment Options: Physical, Biochemical or Combination of Both

Where the decision to treat on-site has been made, the appropriate choice of plant has to be determined. Whether partial treatment or full treatment is installed is usually a matter of economics. A capital outlay is necessary and this must have an acceptable payback period. The treatment options available are Physical, Physical/Chemical, Biological or a combination of all or any of these.

On-site treatment could involve simple physical treatment to remove materials such as gross solids, FOG (Fat, Oil & Grease) and can include pH correction. The equipment may include manual or mechanical screens, grease separators or the newly introduced DISPERSED AIR FLOATATION which is simple, economical and extremely efficient and effective. A component of COD associated with these materials would also be removed by the physical treatment. With DISPERSED AIR FLOATATION up to 30% BOD, 50% COD, 60% TSS and over 90% FOG can be removed physically without the use of chemicals. Better performance can be achieved by using coagulant, flocculants and ploy-electrolytes. In most cases, partial treatment using DISPERSED AIR FLOATATION would achieve the reduction in pollution loads necessary to substantially reduce the cost of discharge of effluent to public sewer. The ownership costs (capital expenditure, servicing, maintenance and operation costs) associated with DISPERSED AIR FLOATATION are usually low. The benefits of cost savings in effluent disposal are high and the capital/operating cost of proving on-site partial treatment can be justified against the ownership costs. Given these benefits it may be sufficient not to invest in further onsite treatment for the effluent to be discharged into public sewer.

However, it may still be necessary or even desirable for the wastewater to be treated further for direct discharge to a watercourse or re-used for non-process operations within the industry. In such a case, full on-site treatment would often justify the capital and operations cost. Cost analysis must also take into account the valuable space required for location of the treatment plant on the core business site.

For disposal to watercourse, consent from the Environmental Regulating Authorities (the Environment Agency in the UK) will be necessary.

    

KEE Microfloat Unit                                                  Interior working of the Microfloat System

The full treatment options could include anaerobic fixed film technology. This is particularly suitable for high strength wastewater requiring initial partial treatment prior to sewer disposal or further aerobic treatment to produce effluent suitable for direct discharge to a watercourse. The aerobic process could include:

  • Suspended Growth Activated Sludge Process options through Extended Aeration, Sequencing Batch Reactor (SBR) or Oxidation Ditch.
  • Fixed Film Process through Rotating Biological Contactors (RBC), Submerged Aerated Filter (SAF).

Choosing the Treatment Option

The most suitable process selection would depend on many factors such as:

  • Initial Mechanical/Electrical Capital Cost.
  • Installation Cost.
  • Operating Cost including on-site attendance/labour costs, energy costs, consumables and plant operation complexities. Disposal costs of physically separated pollutants e.g. FOG, TSS and sludge in case of full Biological treatment plant.
  • Servicing, Spares & Maintenance Cost.
  • Space and Land requirements for location of the on-site treatment plant.

All the above factors should be taken into account and a discounted cash flow calculated on a 10, 15 or a 20-year replacement cycle. This should be weighed against the cost of disposal to sewer or partial treatment followed by disposal to sewer. When evaluating the disposal costs to public sewer, it is necessary to liaise with the authorities or provider of the central wastewater treatment plant, to establish initial capital cost contribution expected and the potential annual costs associated with sewer discharge over the next 10,15 or 20 years. Armed with all this financial data, the overall cost of various disposal options should be evaluated and the financial disposal option chosen justified on a payback period or the net discounted cash flow, or the simple approach of evaluating the cost of disposing a unit volume (say 1 m3) of effluent.

With so many factors to consider, such as type of treatment, if any, the process selection for partial or full on-site treatment and cost analysis to justify the most appropriate option for disposal of the effluent, it may be beneficial to use the services of a professional. An experienced independent consultant with a wide knowledge of industrial wastewater treatment processes would be the obvious choice. Some Companies do offer a wide spectrum of process options and have the necessary experience to offer turnkey solutions using the most optimised process. Such companies may have a bias towards their own technology and process if they have a limited range of process options to offer. All this should be balanced against their ability to provide project management, process design, site civil work, mechanical/electrical erection, commissioning and more importantly on-site operation with process warranties.

The KEE Group Companies, KEE Process Limited and KEE Services Limited can offer such an option. Their technologies include physio-chemical processes (Dispersed Air Floatation, simple gravity solids and grease separators), Anaerobic Reactors (for high strength wastewaters), Fixed Film (RBC and SAF) Reactors and Suspended Growth Reactors (Activated Sludge Processes such as Extended Aeration, SBR, Oxidation Ditch, Extended Aeration followed by Ultra fine Filtration), and on-site operation of the treatment plant. KEE also have a team of experienced process engineers and project engineers capable of delivering the necessary turnkey solution to suit most customers. KEE Services offer on-site plant operation with out-of-hours emergency backup through a 24hrs manned Call Centre.

RBC Modular System

Photographs showing SAF, RBC, & SBR plants below:

 

KEE EnviroSAF

Cut-away view of the KEE EnviroSAF

Oxidation Ditch with Nitrification, Denitrification

Oxidation Ditch with Nitrification, Denitrification and Aerobic Sludge Digestion.

Large RBCs for biological treatment.

Large RBCs for biological treatment.

Compact, single piece NuDisc® RBC Wastewater Treatment System.

Compact, single piece NuDisc® RBC Wastewater Treatment System.

KEE SBR Plant

The decanter and access manway of a fruit juice wastewater treatment SBR Plant.

KEE Submerged Aerated Filter Plant

Vegetable processing wastewater screening prior to being treated in a multi-stage Submerged Aerated Filter Plant.

KEE SBR Plant

Sequencing Batch Reactor (SBR) plant at a Brewery.

KEE Multi-stage Submerged Aerated Filter Plant.

Multi-stage Submerged Aerated Filter Plant. Preliminary treatment includes screening.

 

For more information on KEE’s latest NuDisc® RBC, please visit our website or call KEE Process on: 01296 634500

 

THE KEE GROUP – WHO AND WHAT ARE THEY?

ENVIRONMENTAL ISSUES affect us all equally and most of us have a heightened awareness of the environmental impact on our planet. All of us need stable climate weather patterns, clean air and clean water for survival and we at KEE play our role in securing the cleanliness of our water sources.

KEE GROUP, comprising of KEE Process Limited and KEE Services Limited is a privately-owned British company which, for the past 60 years, has been at the forefront of providing affordable solutions for the treatment of wastewater and its discharge into a watercourse or the aquafer.

We all take for granted a clean water supply but the treated wastewater discharged into the environment, in almost all cases, does become a source for that clean water supply. Consequently over many  years, quality requirements for discharge of treated effluent to watercourses have gradually been tightened up and at present these quality requirements do not only relate to reduction of oxygen demand and suspended solids but also include nutrient removal such as total nitrogen and phosphorus. Behind the scenes at KEE, we have been busy making sure that we continue to rise to the challenge of the stringent requirements for discharge of treated effluent from Municipal and Industrial wastewater treatment systems.

To support this mission, KEE has patented and introduced a large range of technologies and hardware to provide systems for treating small and large flows. The small flows are treated using KEE NuDisc® single-piece packaged plants, which are designed and engineered to provide value for money and are configured to operate with minimum day-to-day intervention. In addition to these single piece KEE NuDisc® packaged plants, there is the modular system arrangement, based on various technologies such as RBC, SAF and Activated Sludge plants. These single piece and modular packaged plants are versatile in their application and are able to provide nutrient (total nitrogen and phosphorus) reduction in the packaged plant configuration.

KEE also provides and supplies solutions for larger flows, which may involve construction of a plant from modular components and hardware, or a totally on-site built system. KEE has all the technology options at its disposal and is therefore able to process-engineer the optimum solution for the application, taking into account the customer’s needs and the site requirements. To facilitate this, KEE provides the services of its Process Engineers to evaluate the site requirements and the treatment objectives. KEE wastewater treatment technologies include Submerged Aerated Filters (SAF), Rotating Biological Contactors (RBC), Extended Aeration Activated Sludge Treatment Plant, Sequencing Batch Reactor Activated Sludge Plants, Oxidation Ditch, Ultra-Fine Filtration Modules, Dispersed Air Flotation (DAF and Microfloat) and Anaerobic Reactor for treatment of high-strength industrial wastewaters. The suitability of any one, or a combination of these technologies and unit operations, will be assessed to arrive at the most optimised solutions.

KEE has introduced various features in the hardware offering the above technologies and these include:

  • Patented Managed Flow features in the system enabling hydraulic and organic attenuation of loads.
  • Removable fine bubble membrane diffusers in SAF Systems without the need to remove the media or empty the tank.
  • Highly efficient and cost effective dispersed air Microfloat® System for removal of fat, oil, grease, suspended solids, BOD and COD from industrial wastewater discharge.
    Introduction of high-efficiency surface-mounted dual mode processor designed to provide efficient mixing and fine bubble aeration of deep basin activated sludge systems.

A good and well-executed engineered solution for treatment of wastewater is only part of the total ongoing requirement for our clients. To complete the package, KEE also offers its clients the basic service and maintenance of hardware and equipment, or can take over the total operation and maintenance of the plant on behalf of the client. The objective for KEE is to provide their customers with the lowest lifetime cost solution and KEE rises to the challenge by offering to operate the plant at a fixed price. This gives the client complete peace of mind. KEE also offers to operate and maintain plants supplied by other manufacturers after an initial survey and evaluation of the system already installed.

The Literature site  includes a complete set of KEE literature and Press information on all their technology and services offered, including KEE NuDisc®, KEE EnviroSAF, KEE Microfloat® Dispersed Air Flotation System and the Triton® Dual Mode Processor for aeration and mixing of activated sludge in conventional and extended aeration plants and oxidation ditches.

To see the capabilities of the KEE Group of companies please visit the KEE Group website.

KEE Process Logo   KEE Services Logo

 

 

KEE EXPERIENCE IN IRELAND

KEE Wastewater Treatment and Disposal

KEE are a major supplier of process engineered treatment systems and have been heavily involved with Water Services and Local Councils in Ireland for supply and upgrade of wastewater treatment facilities.  The applications vary from simple Municipal wastewater treatment plants providing basic treatment to supplying plants which are designed to produce very high quality effluent with phosphorus and total nitrogen reduction.  In many cases the requirements are for less than 3 mg/l of ammoniacal nitrogen associated with less than 5mg/l BOD and Suspended Solids.

Having been involved with supplying many Municipal wastewater treatment plants in Northern Ireland for sites at Kinallen, Fivemiletown, Bergah, Ballinamallard, Fintona, Lisbellaw, Caledon, Lislea and many more, KEE are also working with Councils in Eire to upgrade treatment plants to facilitate discharge of highly polluted industrial effluent into their system.

Municipal wastewater treatment plants are able to accommodate and treat industrial discharges if these are taken into account at the design stage.  However, when the industrial discharge is intermittent and imposes sudden shock loads onto an otherwise overloaded Municipal facility, KEE have been able to offer solutions to overcome such  problems.  This includes upgrading the Municipal facility without much upheaval and also offering partial treatment of the industrial discharge at source to overcome the problems.  This is particularly the case with Municipal facilities which become oxygen limited in the activated sludge stage.  The solution is to install their versatile dual mode TRITON® processor which provides mixing and/or dissolved oxygen into the mixed liquor.  It is also possible to use the KEE DISPERSED AIR FLOATATION (DAF) MICROFLOAT® SYSTEM to provide partial on-site treatment to the industrial discharge to reduce the load discharged into the sewer.  KEE have used TRITON® Aerator to upgrade an overloaded Municipal plant in Scotland to accommodate loads generated from Distillery and are in the process of upgrading a Dairy Plant to upgrade the aeration system using TRITON® Aerator and to include biological phosphorus removal and reduce fat and grease by installing the KEE DAF system upstream of the biological process. “The polluter pays” and it therefore follows that those Industries which discharge large quantities of heavily polluted wastewaters into the sewer should consider the options of on-site treatment to reduce their costs and the loads on the Municipal treatment facilities.  The treatment options which should be considered are Physical, Physical/chemical or biological treatment or a combination of all or any of these.

KEE-microfloat-01  KEE-microfloat-03              KEE MICROFLOAT® SYSTEM

Triton   kee_triton      KEE TRITON® AERATION/MIXING

KEE have built many facilities in Ireland to include phosphorus and total nitrogen removal with simplicity of process design and operation thus embracing the KEE philosophy of offering low lifetime cost solutions.

The KEE Group of Companies, can offer such an option.  Their technologies include physio-chemical processes (Dispersed Air Floatation, simple gravity solids and grease separators), Anaerobic Reactors (for high strength wastewaters), Fixed Film Reactors (RBC & SAF) and Suspended Growth Reactors (activated sludge processes -Extended Aeration, Oxidation Ditch, SBR, Extended Aeration followed by Ultra Fine Filtration), and on-site operation of the treatment plant.  KEE also have a team of experienced process engineers and project engineers capable of delivering the necessary turnkey solution to suit most customers.

oxidation_ditch  NuSAF-01
OXIDATION DITCH                                            KEE ENVIROSAF

Okee-rbcs                                 KEE ROTATING BIOLOGICAL CONTACTORS (RBC)

To see the capabilities of the KEE Group of companies please visit the KEE Group website

KEE Process Logo

KEE is a globally recognised brand operating within in the industrial, commercial and domestic wastewater treatment industries. KEE’s specialist knowledge and expertise is derived from over 60 years’ experience in the design, development, manufacture, install, commissioning, operation, refurbishment, repair and maintenance of wastewater treatment systems and equipment, including:

  • Fixed Film Reactors: Rotating Biological Contactors (RBCs), Packaged RBC Systems, Moving Bed Biological Reactors (MBBR) and Submerged Aerated Filters (SAF).
  • Suspended Growth Reactors: Extended Aeration, Sequencing Batch Reactor (SBR), Oxidation Ditch, IFAS process technologies and Anaerobic Biological Reactor (ABR) for high strength industrial waste.
  • ‘Turn Key’ Solutions: Technical Design, Project Appraisal & Management, Process Engineering, Plant Installation & Operation, Equipment Refurbishment & Upgrades and Plant Rental. KEE also provide approved spares and ancillary products such as Final Clarifiers and Settlement Tanks.

KEE Services Ltd specialise in maintenance & repair services for all makes and types of wastewater treatment systems & pumping stations. Our nationwide team of directly employed, regional engineers and technicians are KEE trained, DBS checked and British Water Certified.

 

KEE NuTech TERTIARY FILTERS

Biological Tertiary Filter Units for BOD, Suspended Solids, Ammoniacal and or Total Nitrogen reduction.

1.4 RENDER-modified

KEE have introduced a new range of tertiary filter units to their wastewater technology called KEE NuTech Tertiary Filters.

The new range of KEE NuTech Tertiary Filter units are a multistage biological – physical system and operates with minimal maintenance and does not require electrical power for its operation, except for specific circumstances. The tertiary filter polishes the final effluent from the final settlement stage of a treatment plant and the polished effluent can be discharged through a UV light disinfection system to make it suitable for irrigation use.

The media is contained in easy to handle bags and these bags are arranged to optimise the breakdown of the organic components of wastewater by alternating aerobic and anoxic stages.  The aerobic layers of media are aerated through natural ventilation using ventilation stacks and vent pipes or can be low pressure, low power, fan assisted through forced ventilation.

The bio-degradation capability of the tertiary filter eliminates the need to backwash the filter on a regular basis.  The tertiary filter media therefore provides the physical separation of the fine solids and the environment for the natural bio-degradation of these retained solids.

Tertiary Brochure (2nd Stage 1pp).indd

Tertiary Filter Options The KEE NuTech Tertiary filters are available as free standing units or as an integral part of a KEE Packaged Plant.

NuDisc Tertiary Filter system

KEE NuDisc® HR-R Packaged WwT Plant is a simple low energy, low maintenance system, offering the lowest lifetime cost compared to most similar packaged plants for high quality effluent in the market. The treated effluent can be recycled for irrigation, general outdoor washing, toilet flushing or similar non-potable use.

To see the capabilities of the KEE Group of companies please visit the KEE Group website

KEE Process Logo

KEE is a globally recognised brand operating within in the industrial, commercial and domestic wastewater treatment industries. KEE’s specialist knowledge and expertise is derived from over 60 years’ experience in the design, development, manufacture, install, commissioning, operation, refurbishment, repair and maintenance of wastewater treatment systems and equipment, including:

  • Fixed Film Reactors: Rotating Biological Contactors (RBCs), Packaged RBC Systems, Moving Bed Biological Reactors (MBBR) and Submerged Aerated Filters (SAF).
  • Suspended Growth Reactors: Extended Aeration, Sequencing Batch Reactor (SBR), Oxidation Ditch, IFAS process technologies and Anaerobic Biological Reactor (ABR) for high strength industrial waste.
  • ‘Turn Key’ Solutions: Technical Design, Project Appraisal & Management, Process Engineering, Plant Installation & Operation, Equipment Refurbishment & Upgrades and Plant Rental. KEE also provide approved spares and ancillary products such as Final Clarifiers and Settlement Tanks.

KEE Services Ltd specialise in maintenance & repair services for all makes and types of wastewater treatment systems & pumping stations. Our nationwide team of directly employed, regional engineers and technicians are KEE trained, DBS checked and British Water Certified.