Wastewater Treatment Plants ( WWTPs ) France: 

A Comparison With specific reference to Domestic Wastewater Treatment Plants in France and French legislation for Off Mains Drainage systems

The following types of wastewater treatment plants or micro stations d’épuration are available in France:

SUSPENDED GROWTH, submerged aerating filter or BLOWN AIR Wastewater Treatment Plants (NOT to be confused with the BioTec unit from Titan or AirFlow from Klargester!)

Summary

Suspended growth, submerged aerating filter or “blown air” wastewater treatment plants in France ( WWTP ) are the most common type of WWTP in France as they are generally the cheapest and easiest to manufacture. Unfortunately, this type of domestic wastewater treatment plant is highly likely to either under-aerate releasing untreated sewage and contaminating the environment or over-aerate causing bacteria to not settle-out and contaminating the environment. To find out more about BLOWN AIR domestic Wastewater Treatment plants in France click here or to contact us click here

AERATION AND FILTRATION Wastewater treatment plants

Summary

These wastewater treatment plants combine the introduction of air with a filter to treat sewage and remove solids. The filters are usually of fabric based materials that last a long time but are subject to periodic clogging, and might cause sewage to rise out of the mini wastewater plant onto the surface. The effluent quality is interdependent with the cleanliness of the filter and therefore dependence on the frequency and quality of the maintenance. To find out more about Aeration and Filtration domestic Wastewater Treatment plants in France click here, or to contact us click here

SEQUENCING BATCH REACTOR Wastewater treatment plants ( SBR systems)

Summary

The sequencing batch reactor (SBR), is a fill up and treat waste water treatment plant. In this system, wastewater is added to a single “batch” reactor, treated to remove undesirable components, and then discharged. Equalization, aeration, and clarification can all be achieved using a single batch reactor. To optimize the performance of the system, two or more batch reactors are used in a predetermined sequence of operations. SBR systems have been successfully used to treat both municipal and industrial wastewater. However, they are uniquely suited for wastewater treatment applications characterized by low or no flow variations as occurring in domestic or holiday property applications. To find out more about SBR domestic Wastewater Treatment plants in France click here, or to contact us click here

PEAT / FOAM & FABRIC FILTER Wastewater treatment plants

Summary

Typically the raw sewage flows from the building to a septic tank which may or may not have a septic tank effluent filter. The septic tank effluent may flow by gravity or be pumped to be sprayed over the filter material in the wastewater treatment plant. In the case where the effluent is gravity flowed over the filter material, the filter material then spreads the effluent throughout the surface area by means of a tipping tray. To find out more about peat, foam and fabric filter domestic Wastewater Treatment plants in France click here, or to contact us click here

Fosse Septique and pressurised SAND FILTER Wastewater treatment plants

Summary

Typically, in this type of domestic wastewater treatment plant the waste water flows into a septic tank first. This septic tank requires a filter to hold back solids. Then the anaerobic filtered septic tank effluent flows into a holding chamber that contains a pump or pumps to pressurize liquid material through small diameter pipes. These small diameter pipes are pre-drilled with holes of a particular diameter in order to achieve a particular squirt height and velocity. To find out more about fosse septique and pressurised sand filter domestic Wastewater Treatment plants in France click here, or to contact us click here

ROTATING BIOLOGICAL CONTACTOR (RBC) or BioDisc® wastewater treatment plant

Summary

RBC domestic wastewater treatment plants have usually three treatment stages to the process. One chamber is called PST (primary settlement tank), the second one called biozone, and the third stage is called FST (Final Settlement tank) The PST acts as a pre-treatment tank, the "biozone" holds the rotating plastic discs and, the FST performs a final clarification in this type of mini wastewater treatment plant. To find out more about BioDisc domestic Wastewater Treatment plants in France click here, or to contact us click here

Wastewater treatment plants Biotec / AirFlow with Fixed Culture

Summary

Fixed bacterial culture wastewater treatment plants or trickling filter usually have three treatment stages to the process. One chamber is called PST (primary settlement tank), the second one called biozone, and the third stage is called FST (Final Settlement tank) The PST acts as a pre-treatment tank, the "biozone" is a honeycomb material suspended in free air above the holding tanks and, the FST performs a final clarification within these wastewater treatment plants. To find out more about Airflow or BioTec domestic Wastewater Treatment plants in France click here , or to contact us click here

Moving Bed Biological Reactor Wastewater treatment plants MBBRs

Summary

Moving bed biological reactor wastewater treatment plants or MBBRs WWTPs are the latest development in air blown sewage treatment plants. Designed around a three chamber waste water treatment system, the moving media within the second stage treatment tank is designed to continuously self clean, preventing the “channeling” or clogging of the bacteria supporting material often found in submerged aerating filter wastewater treatment systems To find out more about Moving bed biological reactor domestic Wastewater Treatment plants in France ( MBBRs ) click here, or to contact us click here