Sewage Treatment Tanks

We can supply Septic Tanks, Continuous Aeration Plant, Sequential Batch Reactor throughtout the UK. On our information page you can find the right septic tank or Continuous Aeration Plants or Sequential Batch Reactor to suit your needs.

Call 0871 200 2082 for more details


Click to view information on different types of Sewage Treatment Tanks.

Sepic - CAP - SBR

Septic

A septic tank is designed to provide what is known as primary biological treatment to crude sewage produced in a normal domestic environment. It retains solids and allows them to settle out, where they can be partially broken by biological action so that only the remaining liquor is left to flow down the outlet drain. This liquor (normally called effluent) is then sufficiently treated to soak into the ground in an underground distribution system.

The septic tanks are designed to accommodate drain invert depths to 2 metres. However, the neck can be easily cut down to suit shallower invert levels. The pedestrian duty lockable manhole cover is also manufactured in rotationally moulded polyehtylene making it lightweight and easy to handle. In addtion a safety grill is available to comply fully with statutory regulations and HSE recommendations.

The septic tanks incorporaqte a unique patented baffle system which not only gives exceptional effluent quality but is designed to cope with the rigours of lifetime service. There are no floating balls to become clogged up or flimsy partitions to break off if de-sludging is neglected and the robust polyethylene cylindrical baffle will withstand the impacy from even the heaviest de-sludging hose.

This robust two chamber settlment system is designed to BS6297 and carries full BBA approval.

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Continuous Aeration Plant (CAP)

A Continuous Aeration Plant (CAP), is desigfned to provide full tratment to crude sewage in a normal domestic enviroment. The CAP teats sewage to a higher standard than a septic tank, but does no offer the same degree of control available from a Sequential Batch Reactor (SBR) The standard of effluent discharged from a CAP is such that it does not need to be passed through a soakaway and can be discharged directly to a watercourse.

The Sequential Batch Reactor (SBR) has proven, beyond doubt, to provide the highest standards of efflient quality in the market-place. The CAP, while not designed toi rivel the SBR in terms of effluent quality, offers an efficient, economic and enviromenally freindly alternative to either septic tanks or premium sewage treatment plant.

Benefits and features

  • Impact resistant body moulded in one-piece polyethylene

  • Wide base for stabillity, ease of handling and storage

  • Moulding-in lifting eyes

  • Achieves Royal Commission standards for effluent quality under normal domestic conditions

  • Powered by small, silent air compressor

  • No electrics in tank

  • Fully recyclable material

  • Corrosion resistant

Technical information

The CAP is a biological aeration type treatment plant designed to produce a moderate quality of final effuent in addition to overcoming several of the common problems associated with small packaged domestic sewage treatment units.

Common problems which can occur are:

  • "Fixed film" types, which have a "media" matrix can suffer from media blockage because of excessive bacteria growth. Replacment/maintenance of the media material may be required at regular intervals.

  • Mechanical/eletrical components within the tanks are difficult to maintain and can be a safety risk

  • The liqur is not spread evenly over the avaible bacteria preventing an adequate oxygen supply.

The balmoral CAP overcomes these problems becauses:

  • There is on "fixed" media within the CAP to become blocked up - it operates in the "activated sludge" principal whereby the bacteria floats in suspention in tjhe reactor cessal and forms an "active soup" of "mixed liquor"

  • There are no moving parts or eletrical components within all the tanks. All the functions within the tanks are operated by air power generated by a small compressor housed in a remote chamber, allowing maintenance to be carried out safely and easily.

  • The bacteria reeives a high quality air supply and is completely mixed and aered by the high volume fine bubble diffuser.

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Sequential Batch Reactor

The Sequential Batch Reactor is designed to provide full biological treament to crude sewage prodeuced in a nomal domestic enviroment. These units are normally installed in sutuations where there is no public sewer and where a septic tank or CAP is not enviromentally acceptable. The SBR treats the effluents to a very high standard (normally to 15mg/litre suspended soilds and 10mg.litre BOD) which is suitable for discharging directly into a watercourse.

Benefits

  • Unrivalled effluent quality

  • Reduces main pollutants including ammonia by 96%

  • Reduces phosphates by 88%

  • Batch system eliminates peak surges

  • Controlled by an integrated programmable control unit

  • Automatic " Holiday Mode" aeration cycle

  • Powered only by a small air compressor

  • Safe - no 240 volt electrics within tanks

The SBR has been designed and built by a leading Tank Manufacture in association with the University of Abertay, Dundee, Waste Water Technology Centre, who acted as external consultants. The university carried out an in-depth test programme during which the SBR was tested and evaluated alongside a leading competitors model.

The aim of the development programme was to design a unit which was not only very robust and reliable but which would provide outstanding effluent quality without the need for expensive ?add on? equipment and would also overcome technical problems - (such as media clogging and peak surges through the bio-zone), which most current designs have failed to adequately address.

The final report from the WWTC confirms that the SBR out-performs its rivals in almost every respect and that it has the capability to meet even the most onerous effluent requirement.

Technical information
The SBR is an advanced biological aeration type treatment plant designed to produce a very high quality of final effluent in addition to overcoming several of the common problems associated with packaged domestic sewage treatment units.

Common problems which can occur are:

  • Peak surges flow (ie. mornings and evenings) can
    force effluent through the plant before it has had
    sufficient treatment time

  • Fixed film? types, which have a "media" matrix,
    can suffer from media blockage because of
    excessive bacteria growth. Replacement/maintenance
    of the media material may be required at regular
    intervals

  • Mechanical/electrical components within the tanks are
    difficult to maintain and can be a safety risk

  • The liquor is not spread evenly over the available
    bacteria preventing an adequate oxygen supply
    The Balmoral SBR overcomes these problems by:

  • Operating on a storage and batching system - storing the
    effluent at peak times in the primary settlement tank
    and treating it in small batches throughout the rest of
    the day - thereby ensuring that each batch receives the
    full treatment time

  • There is no "fixed" media within the SBR to become
    blocked up - it operates on the "activated sludge"
    principal whereby the bacteria float in suspension in the
    reactor vessel and form an "active soup" of "mixed liquor"

  • There are no moving parts or electrical components
    within the tank. All functions within the tank are operated
    by air power generated by a small compressor which is
    housed in a remote kiosk, allowing
    maintenance to be carried out safely and easily

  • The bacteria receives a high quality air supply and is
    completely mixed and aerated by the high volume
    bubble diffuser.

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