hi allthis one out of finlanddon't think it big but look at the...

hi all
this one out of finland
don't think it big but look at the map of finland and you will see so many water bodies so important for building knowledge about us in the area

Reducing the eutrophication of Ahmonlampi by phosphorus binding09/06/2019The municipality of Siilinjärvi has been granted permission to bind phosphorus from Ahmo's sediment. The purpose of the treatment is to reduce algal blooms and thus improve the recreational value of the pond. The hearing is scheduled for the end of September, with the end of the appeal period on September 16, 2019. The treatment is directed to the southern end of the pond, the so-called. into the pit of the mill head.Binding of phosphorus is accomplished by the Phoslock chemical containing lanthanum metal. The substance consists predominantly of bentonite clay (95%), to which lanthanum metal bound in the preparation process reacts with phosphorus in water-soluble form to form a very poorly soluble lanthanum phosphorus compound. Phoslock has been used in water treatment for some 15 years. However, only a few treatments have been carried out in Finland.The oxygen content of the water does not affect the success of the treatment or the persistence of the effect, as in the case of iron-based chemicals. The treatment does not affect the pH or conductivity of the water. Lanthanum in Phoslock has not been evaluated in existing studies to cause adverse effects to aquatic life.Treatment with a clay-like substance will cause clouding of the water. The aim is to reduce the hazards of blurring by targeting the treatment to groundwater and delimiting the treatment area with a press wall. Blurring damage is estimated to occur about a week after treatment, but under windy conditions, clouding may occur for longer.The use of the southern end of the chemical pond should be avoided during and approximately one week after treatment.The effects of the treatment on the water quality of the Ahmonlampi and the nearby Hakkarala water intake will be monitored in accordance with the monitoring program presented in the permit. In addition, fish will be sampled before and after treatment.

thnaks
mickem