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A Guide to the Graf One2Clean Sewage Treatment Plant

 To arrange a free quotation please call us on 0800 3101092 or via our contact form.

What is a Graf One2Clean Sewage Treatment Plant

The Graf is a premium injection molded tank designed and made in Germany with total environmental impact as its core directive. It comes with a 3-year warranty on parts and a 15yr warranty on the tank, it records effluent quality of nearly 99%. This is combined with very low running costs in terms of electrical use, around 46kWh per person per year compared to 217kWh for most normal systems. Further, the air compressor does not run constantly like most tanks which extends its life, this is the element that costs the most to replace in these new systems. In terms of noise as the compressor does not run constantly like most STP’s any impact is minimised. Further, the Graf uses the MEDO air compressor, arguably the best on the market which is Ultra-quiet with output at around 30db.

The tank is a batch cleaner which enables the system to record the excellent effluent quality, minimising its environmental impact. A batch cleaner requires a computer control panel and as the process suggests deals with a batch of waste at a time. This adds an additional level of complexity over simple aeration tanks. Also, your pipework has to be in good order as if groundwater can get in via cracked or broken pipework it can overload the system. 

If you are considering having a Sewage Treatment Plant installed please visit our installation page here

What are the Key features of a Graf One2 Clean 

  • Only one tank with just one chamber required
  • Market-leading effluent quality. Recommended for use in offsetting nitrates and in complying with nutrient discharge limits.
  • The compressor does not run 24hrs a day as with other systems. This reduces any noise impact, reduces electrical usage, and extends the life of the compressor component.
  • The system uses a Medo piston compressor, one of the quietest on the market. See our guide.
  • Less energy consumption and less wear.
  • Odourless.
  • No mechanical elements in the wastewater
  • No pumps in the wastewater
  • No electrical components in the wastewater
  • Incredibly low volume of sewage sludge

There are generally three main operations taking place within a Graf Sewage Treatment Plant. 

Settling and Separation

The settling chamber is the first stage in the purification process. In this stage in a similar way to a Septic Tank, the solids are separated using gravity. Gravity pulls the heavier solids and sludge to the bottom of the tank chamber. This removes the majority of the main pollutants. The leftover liquid less the heavier elements are then passed to the purification chamber. Some Sewage Treatment Plants combine this first stage and the purification in a single process using a sequence batch reactor.

Aeration/Purification phase

In the second phase, oxygen is injected into the tank stimulating bacteria growth and development, and promoting aerobic digestion. The oxygen is normally injected using a compressor within the Sewage Treatment Plant which is super efficient using little electricity. This is one of the reasons that a Sewage Treatment Plant normally requires an electric connection.

 Final Separation

Once the purification phase is completed, which is normally managed by an internal management system. The treated waste for most tanks then flows into a separate section where gravity again separates out any residual waste. This is not the case with Graf technology. The previous wastewater is now purified to appropriate environmental standards, see below. As we have mentioned the quality of the discharge is dependent on the tank you choose

Our Core Services: The Sewage Treatment expert Installers

On the 1st January 2020, all Septic Tanks that discharge to a Stream, Watercourse or Drainage Ditch will become illegal and will require replacing with a Sewage Treatment Plant. Please see here for more details.

Homeseptic Ltd. is rated 4.8 out of 5 based on 28

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Expert wastewater treatment engineers who specialise in Septic Tank and Soakaway replacements as well as Sewage Treatment Installations. We are based in the New Forest, Hampshire but operate across the South Coast as well as Wiltshire, Somerset, Devon, Sussex, Surrey, Oxfordshire, and Berkshire.

The Home of Septic tank and private drainage system solutions. 

Based in the New Forest, Hampshire on the border with Dorset and Wiltshire we operate an expert team of off-mains drainage specialists. This encompasses Septic Tank, Soakaway and drainage system problems, installations, blockages, and servicing. In addition, any issues relating to cesspits and sewage treatment plants.

Homeseptic offers high quality, professional advice, repairs and installation for all aspects of effluent cleansing and disposal across the south of England. Whether you’re looking for septic tank installation, sewerage treatment plants or systems, piping or soakaway solutions, Homeseptic employs only the most competent engineers in the drainage and treatment industry and knows exactly which solutions suit each property.

We only install and offer quality systems we believe in, from suppliers we know and trust.

New Forest Philosophy

As we have said Homeseptic is based in the New Forest. A great location in between the cities of Southampton, Salisbury and Bournemouth. We are a group of good friends who grew up together in the area.  Individually we all have grown tired of the way other Drainage firms are run. As a result, this is why we set up Homeseptic. If you want to know more please check out our About Page

We want to actually put the customer first and turn up to do a great job that we can be proud of. Unfortunately, this is not the case in the market, with most companies pressuring their workers to sell unnecessary works on a visit. Due to this, we offer upfront quotations with any variations discussed before we start work.

We are honest hard working professionals, which we hope you will agree with. As a result, it will certainly not turn up in flash sales vehicles and give you a load of chat and then do a terrible job. Our team will come with the job in mind and the aim of giving you the best value we can in order to facilitate a quality installation. 

We cover all of Hampshire, West Sussex, Dorset, Somerset, and Wiltshire. Please get in touch and see what you think.

GrafOne2Clean Sewage Treatment Plant
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GrafOne2Clean Sewage Treatment Plant
A guide to the GrafOne2Clean Sewage Treatment Plant
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