Casflo Sewage Treatment Systems

Designed for use where the installation of a septic tank is either unacceptable or impractical and a connection to the main sewer impossible, the CAMTECH CASFLO sewage treatment system offers an extremely efficient and unobtrusive means of sewage disposal. Manufactured entirely from robust and corrosion free Elite fabrication grade “PROPYLEX”, the CAMTECH CASFLO incorporates unique and patented features to ensure simplicity and efficiency of operation whilst being able to consistently achieve the ever more stringent standards of discharge effluent quality being required by the Environment Agency. Available in a range of sizes to suit virtually any application from a single residential property, hotels and restaurants or a major industrial / commercial complex, CAMTECH will design and manufacture a system to meet the specific requirements of each individual situation.

PROCESS DESCRIPTION INFLUENT DESIGN PARAMETERS
DWF (Dry Weather Flow)	= Daily Flow as Detailed
Peak Design Flow	= 3 x DWF
Organic Load	= As Detailed
Nature of Influent	= CRUDE SEWAGE
PH Range	= 6 – 8
Standard Effluent Quality	= 20mg/L BOD : 30mg/L SS
ALL SURFACE WATER MUST BE EXCLUDED - NO WASTE DISPOSAL UNITS IN USE, AN EFFECTIVE GREASE TRAP MUST BE INSTALLED ON ANY COMMERCIAL KITCHEN DRAINS. eg.: HOTELS / RESTAURANTS

Installation of CASFLO sewage treatment systems requires no specialist equipment and can be carried out by any competent contractor, quickly and simply. Once installed, the CASFLO unit is completely unobtrusive, even the largest systems.

By using only the best and most reliable components and with no moving parts within the unit,maintenance requirements and running costs are kept to an absolute minimum. In recognition of increasing environmental requirements, CAMTECH CASFLO sewage treatment systems undergo continual development to improve process efficiency and cost effectiveness. Whatever your requirement, CAMTECH will be pleased to provide all design and regulatory approval assistance that may be needed for any type of application. Please contact our technical department for further details.

“CASFLO” Package Sewage Treatment Plant

The “CASFLO” treatment plant is of unitank design and incorporates Primary Settlement (PST) Biological Treatment (Biozone), and Final Settlement (FST) within the same structure, allowing delivery to site as a complete unit to provide for a simple and straightforward installation. No other tanks are required except for larger applications ( over 300 p.e. ) where a modular system is provided or where additional treatment may be required to achieve more stringent effluent quality standards or where effluent re-use is proposed. The “CASFLO” Treatment plant has been designed to optimize the aesthetic qualities of the final installation by ensuring that there is minimum visual impact. The “CASFLO” process is designed in accordance with the requirements of BS 6297.

Primary Settlement Tank

The primary settlement tank is a two stage tank designed to maximize the removal of gross and suspended solids prior to transfer of the settled effluent to the biozone for treatment. The primary settlement tank also incorporates for a sludge storage
volume (based on full load) depending on the desludge periods as identified for individual applications.

Biozone

The biological treatment phase utilizes BAF technology (biological aerated filter) which incorporates two proven principles of biological process in the form of a fixed film reactor for process stability and a suspended floc dispersed growth system for high transfer rates and operational control, to ensure a stable treatment process which is largely unaffected by shock loads. The process incorporates a submerged, high rate, plastic media on which a fixed film of biomass is grown. This film takes nutrition from the incoming settled effluent and is provided with oxygen by means of a small blower unit which aerates the media through HDPE membrane diffusers to provide fine bubble aeration. The action of the fine bubble aeration is carefully controlled to provide optimum oxygen transfer rates and to provide a scouring action to slough off excess biomass to keep the thickness of the fixed biological film at optimum levels, thereby preventing the production of anaerobic bacteria and ensuring maximum process efficiency. The fact that the media remains submerged allows for an element of suspended floc dispersed growth which basically means that there will be biomass which is “unfixed” to the media but achieves treatment through suspended aeration.

The biozone incorporates a two stage process as standard that allows for constant mixing of incoming settled effluent to provide optimum treatment stability and to avoid any “short-circuiting.” The use of a two stage biozone ensures a high degree of process efficiency to not only reduce B.O.D. levels to that required, but will also achieve reductions in ammoniacal nitrogen in excess of standard requirements.

Final Settlement Tank

The final settlement tank is designed in accordance with the requirements of BS 6297 to ensure relevant surface areas and rise rates are achieved to provide maximum settlement of any suspended solids prior to discharge. The “CASFLO” system also incorporates continuous and automatically timed humus sludge return systems to return humus sludge from both the final settlement tank and each biozone, back to the primary settlement tank. Additionally this system also provides for continuous
recycling of treated effluent back to the P.S.T. to not only provide dilution of incoming settled effluent but to also ensure continuous flow during periods of low or no flow, thereby keeping the biomass in prime condition.

Tertiary Treatment Options

• Phosphate Removal
• Sand Filtration
• UV Sterilization
• Effluent Re-use

200pe CASFLO Treatment Plant installed and ready for final landscaping

To maximize efficiency and to minimize maintenance requirements and potential problems, there are NO mechanical or moving parts contained within the treatment plant.

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