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. ...
Due to various problems that occur during treatment the water containing significant amounts of humus substances, using classical methods, the thesis on possibility to apply the hybrid system to its purification has been proposed. The purpose of the combination was to achieve higher efficiency as compared to component processes. Studies allowed for finding that combining filtration in a ground, preliminary ozonization and reverse osmosis gives a possibility to get water of a constant quality, regardless the indices oscillations, to avoid products of humus substances degradation and to protect membranes against fouling. During initial stages of RO process, strong weakening of filtrate stream is observed, and then it is stabilized at constant level with subsequent decreasing after some time. Achieving a maximum efficiency is associated with finding the reason of permeate stream weakening during water treatment. ...
