Restoration of rivers self-purification ability is an important part of the efforts to improve surface waters quality both in Poland and in the world. River regulation works are indifferent neither for the environment nor for the ecosystem of the river, as they change the ability of river waters self-purification. This article presents results of researches on changes of oxygenation and BZT5, as well as water temperature and pH in the hydrological year 2003/04 on regulated and unregulated parts of the Smortawa River. In the progress of the research, conditions of self-purification of the river have been assessed. ...
Basic work objective is determination of quality changes in superficial water connected with economic development in Bialystok district and creating basics to take action to improve water state and their protection from pollution, caused by influence of being-communal agriculture, protection against industrial pollutant, salinity and especially damaging environment substances. Researches was conducted during 3 years since 2005 to the end of 2007 in 12 researching points. Researches of water was conducted at angle of biogenous, aerobic and physical indicators according to obligatory standards and methodologies. There were made and investigation concerned to state of water supply and sewage disposal and rate of economic development in Bialystok district. Based on received information spotted, that with economic development gradually quality of sewage draining to water and superficial water is getting better, but it is still important to invest in water supply and sewage disposal facilities, like also in improvement of economic management. ...
Traditional phosphorus fertilization of crops in Poland has a high environmental risk associated with the ease of transfer of into surface waters, as well as the high cost of production of such fertilizers. This imposes the need to find new solutions to fertilizer, which on one hand would be a lower risk to the environment, on the other hand would be equally accessible source of phosphorus for plants. One of them may be the use of phosphate - sulfur fertilizers (FS), characterized by a gradual release digestible phosphates (V), and hence the lower the migration to the water. The addition of sulfur increasing the availability of phosphorus from phosphate rock, is also a source of sulfur as a nutrient for plants. The aim of the study was to determine the effect of elemental sulfur to the ground rock phosphate on the phosphates (V) and sulfate (VI) ions permeation to waters. In vegetation experiments tested how use of phosphate - sulfur fertilizers affects the movement of phosphates (V) and sulfate (VI) ions to the water. Performed two two-year pot experiment, which tested effect 6 types of phosphate - sulfur fertilizer, differing in degree of milling phosphate (F1 and F2) and the ...
