30 research outputs found
Phase-field modeling of eutectic structures on the nanoscale: the effect of anisotropy
This is a post-peer-review, pre-copyedit version of an article published in Journal of Materials Science. The final authenticated version is available online at: https://doi.org/10.1007/s10853-017-0853-8A simple phase-field model is used to address anisotropic eutectic freezing on the nanoscale in two (2D) and three dimensions (3D). Comparing parameter-free simulations with experiments, it is demonstrated that the employed model can be made quantitative for Ag-Cu. Next, we explore the effect of material properties, and the conditions of freezing on the eutectic pattern. We find that the anisotropies of kinetic coefficient and the interfacial free energies (solid-liquid and solid-solid), the crystal misorientation relative to pulling, the lateral temperature gradient, play essential roles in determining the eutectic pattern. Finally, we explore eutectic morphologies, which form when one of the solid phases are faceted, and investigate cases, in which the kinetic anisotropy for the two solid phases are drastically different
Biogenic compounds removal from wastewater in wastewater treatment plant less than 15,000 population equivalent
W pracy przedstawiono kluczowe dla gospodarki wodoci膮gowo-kanalizacyjnej, zagadnienia dotycz膮ce wytycznych Krajowego Programu Oczyszczania 艢ciek贸w w kontek艣cie ma艂ych oczyszczalni. Zwr贸cono uwag臋 na konieczno艣膰 oraz mo偶liwo艣ci wysokoefektywnego oczyszczania 艣ciek贸w z usuwaniem zwi膮zk贸w azotu i fosforu w oczyszczalniach <15000 RLM.The paper presents the main issues for water and sewage administration on the guidelines of the National Program of Municipal Wastewater in the context of small wastewater treatment. Attention was drawn to the necessity and possibility of nitrogen and phosphorus removal in highly efficient wastewater treatment plant in population equivalent <15 000
The modern wastewater treatment plant in Lagow community - first months of the operation
Wyb贸r technologii, szczeg贸lnie w przypadku ma艂ych obiekt贸w powinien zapewni膰 oczyszczanie 艣ciek贸w w zakresie usuwania zwi膮zk贸w organicznych. W przypadku odprowadzania 艣ciek贸w oczyszczonych do odbiornik贸w I klasy czysto艣ci, technologia powinna zagwarantowa膰 r贸wnie偶 usuwanie ze 艣ciek贸w zwi膮zk贸w azotu i fosforu. W artykule wykazano, 偶e w nowej oczyszczalni 艣ciek贸w obs艂uguj膮cej gmin臋 艁ag贸w Lubuski, uzyskuje si臋 parametry 艣ciek贸w oczyszczonych poni偶ej warto艣ci wymaganych w Rozporz膮dzeniu Ministra 艢rodowiska (Dz.U. 2006 nr 137, poz. 984 z p贸藕n. zm). Wysok膮 efektywno艣膰 oczyszczania 艣ciek贸w z usuwaniem zwi膮zk贸w biogennych uzyskano przy energoch艂onno艣ci rz臋du 0,4 kWh na 1 m3 dop艂ywaj膮cych 艣ciek贸w.The choice of technology, particularly in the case of small objects should provide a highly effective wastewater treatment with the removal of nitrogen and phosphorus. The paper shows that the new wastewater treatment for community 艁agow Lubuski, allows to achieved parameters in treated wastewater below the required given in the regulation of the Minister of the Environment (Journal of Laws of 2006, No. 137, item 984). High efficiency of removal of nutrients can be obtained with energy consumption of 0.4 kWh per 1 m3 of sewage