This two project, "Function in small on-site soil and infiltration beds for wastewater treatment in field" and "Function in small on-site soil and infiltration beds for wastewater treatment in field – competition", investigated the status of small on-site soil treat-ment systems for wastewater in field to find out if there were any common problems.
The purpose of the studys was to find out if there were any common problems in soil treatment systems and to suggest if they could be prevented. This after that several projects pointed out the occurrence of functional problems, such as clogging and decreasing purification.
Some of the result shows:
One of the goals of the project was to propose measures to reduce the occurrence of functional problems. Some of the proposals are:
It is important to remember that the performed inspections only provide a momentary-view of the soli treatment system and not the operation of the soli treatment system over time. Following some soli treatment system over a longer period would give a better picture of the function over time and a better idea of how sludge and water levels can vary in different parts and with different seasons. There are also no studies on how, for example, different levels of sludge and water in distribution pipes affect the purification process in the STS. This needs to be studied in the future to increase knowledge and provide guidance on what measures can be taken in different types of functional problems.
Function in soil treatment systems
va-guiden, Uppsala kommun, Örebro kommun, Bollnäs kommun, Södertälje kommun, Ekerö kommun, Kungsbacka kommun, Miljöförbundet Blekinge Väst, Vara kommun, Herrljunga kommun, Marks kommun, Lilla Edets kommun, Svenljunga kommun, Hörby kommun, Värnamo kommun