The root of surface water eurtofication and the way of its elimination | Príčina eutrofizácie povrchových vôd a spôsob jej eliminácie
2009
Machava, J., Technical University in Zvolen (Slovak Republic). Faculty of Forestry | Kontrišová, O., Technical University in Zvolen (Slovak Republic). Faculty of Ecology and Environmental Sciences | Hybská, H. ([email protected]), Technical University in Zvolen (Slovak Republic). Faculty of Ecology and Environmental Sciences
Eutrophication of surface water caused by increased concentrations of macronutrients leads to a production of phytoplankton - consisting of algae and cyanophytes. These phytotrophic organisms are supposed to produce 90% of organically created oxygen on the Earth. A limiting factor of eutrophication is mostly phosphorus or nitrogen, depending on their mutual ratio. When a weight ratio of N:P is above 7, P is key liming nutrient of plant growth. Increased amounts of algae and cyanophytes have negative impact on water quality. In eutrophic water their excess is commonly associated with excessive consumption of dissolved oxygen over a night and its morning deficiency in water. Eutrophication process is normally reflected in other water properties such as pH and conductivities, that were monitored over a phenological period in a fire protection reservoir in Modra. The process of eutrophication can be limited by a reduction of released P input into surface water. One of possible solution is lowering of P content in surface water using a composite sorbent. In this work, enhanced P concentration in the experimental basin was lowered by this sorbent from 153 ppb to 12,4 ppm. In a bucket, a trial without the composite sorbent application, P Dissolved levels were decreased by the algae consumption from 153 to 26 ppb.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Agricultural Knowledge and Innovation Institute