On dispersed development areas most often exists advantageous conditions for expansion and application systems in order to increase retention and water percolation on the precipitation spot. This way of rain water management has favorable influence on runoff dynamic within built-up area and adjoining roads. Possibility of infiltration systems using depends on ground water depth, kind of ground and area accessibility to build infiltration facilities. Methods of rain water management which can be used on dispersed development areas are presented in this paper. The research results of suspensions grain composition from rain water and analysis of literature data concerning runoff quality show large changeability of pollution indexes. Using of infiltration facilities permits remove majority of pollutants accumulated at suspension particles which are piled up at filtration medium surface. Knowledge of suspensions grain composition occurring in rain water allows estimate intensity of clogging process in different kind of grounds as well as select methods which protect ground against deep clogging. Maintenance operations which are made regularly in infiltration facilities leads to removing clogged layer of ground and majority of pollutions protect in this way ground water against contamination. ...
During removal of suspension in course of water and wastewater treatment processes the crucial role is played by properties and features of individual parti-cles. Such parameters as specific surface area, shape, size and compaction of sus-pension particles may decide on their settling and sorptive properties. The results of grain size analysis, obtained by means of laser granulometer, give information about structure and size of particles that form suspension.In this paper the original results of suspension's grain size analysis con-ducted on municipal wastes originating from mechanical-biological wastewater treatment plants and on filter backwash water taken from iron and manganese re-moval filters on groundwater treatment plants are presented.The modified form of Avrami equation was used in order to describe grain size results and to identify the process of suspension's formation. ...
Types of water abstraction sources for irrigation, examples of water supply and water storage in the farmlands as well as advantages and disadvantages of the suggested solutions were analyzed in the article. In addition, the organizational and legal requirements relating to the groundwater and surface water intakes were discussed. From the point of view of the interests of the farmer it is necessary to know the changes that occurred in the fees and administrative responsibilities related to agricultural water intake, introduced by the new WaterLaw Act since 1 January 2018. The differences between legislation in force and repealed associated with both agricultural water management and environmental protection were demonstrated in the paper. ...
