Abstract:Anthropopressure is considered as one of the most important causes of disorder of natural water relations in the environment and impoverishment of the landscape. This is particularly evident in urban areas, where the degree of built-up areas and participation of impervious surfaces are still increasing. The result of such processes are extreme phenomena-more frequent droughts and floods. One way to keep a good state of water resources in urban catchments is creating retention and infiltration of rainwater. The… Show more
“…On the other hand, stormwater reservoirs and wetlands can be a factor increasing biodiversity in a poor, urbanised landscape (Le Viol et al 2009 ; Kazemi et al 2011 ; Herrmann 2012 ; Zubala and Patro 2015 ). Spatial development schemes used for decades in the large urbanised areas of Central and Eastern Europe were mostly not conducive to the development or maintenance of biological life at an adequate level.…”
Section: Resultsmentioning
confidence: 99%
“…More and more often the unevenness of flow and hydraulic overload within sewage systems increases. A reduction in permeable surfaces in addition decreases the amount of water soaking into soil, and thus reduces the possibility of natural self-purification and renewal of underground water resources (Geiger and Dreiseitl 2001 ; Congying 2012 ; Zubala and Patro 2015 ). The stream of stormwater and melt-water can contain considerable amounts of pollutants, and so they pose a significant risk to natural receiving bodies (rivers, reservoirs) (Eriksson et al 2007 ; Jamwal et al 2008 ; Barałkiewicz et al 2014 ).…”
Section: Introductionmentioning
confidence: 99%
“…roads, car parks, fuel stations, small housing estates. Such systems include separators, wells, settling tanks and infiltration basins (Geiger and Dreiseitl 2001 ; Langeveld et al 2012 ; Fuchs et al 2013 ; Tran and Kang 2013 ; Zubala and Patro 2015 ). The operating principle of such devices is very simple.…”
A decade of observations provided grounds for assessing the operation of one of the few stormwater treatment plants in Poland (system: screens—grit chambers—settler—retention pond) which collects effluents from 471 ha of the city. Among other aspects, the following were evaluated: treatment efficiency, relationship between the quality of treated stormwater and that of waters in the receiving body (the ox-bow lake of the Vistula river), operating stability of key units, significance of the facility for nature. During the assessment, the plant had a positive effect on the quality of stormwater effluents—the content of the analysed pollutants was reduced (more than 80% average efficiency for mineral forms of nitrogen and suspension matter) and oxygen ratios improved (23% increase in the average concentration of dissolved oxygen and more than 50% decrease in 5-day biochemical oxygen demand and chemical oxygen demand). Although the overall assessment of the facility’s operation was good, some omissions and operating errors were noted (method of removing retained pollutants, stormwater flow control). Eliminating them is a prerequisite for maintaining the expected reliability of the system. An effect of stormwater ponds on the increase in biodiversity in the poor urbanised landscape has also been observed. The structures, forming a uniform system along with urban green areas, constitute specific enclaves which attract living organisms.
“…On the other hand, stormwater reservoirs and wetlands can be a factor increasing biodiversity in a poor, urbanised landscape (Le Viol et al 2009 ; Kazemi et al 2011 ; Herrmann 2012 ; Zubala and Patro 2015 ). Spatial development schemes used for decades in the large urbanised areas of Central and Eastern Europe were mostly not conducive to the development or maintenance of biological life at an adequate level.…”
Section: Resultsmentioning
confidence: 99%
“…More and more often the unevenness of flow and hydraulic overload within sewage systems increases. A reduction in permeable surfaces in addition decreases the amount of water soaking into soil, and thus reduces the possibility of natural self-purification and renewal of underground water resources (Geiger and Dreiseitl 2001 ; Congying 2012 ; Zubala and Patro 2015 ). The stream of stormwater and melt-water can contain considerable amounts of pollutants, and so they pose a significant risk to natural receiving bodies (rivers, reservoirs) (Eriksson et al 2007 ; Jamwal et al 2008 ; Barałkiewicz et al 2014 ).…”
Section: Introductionmentioning
confidence: 99%
“…roads, car parks, fuel stations, small housing estates. Such systems include separators, wells, settling tanks and infiltration basins (Geiger and Dreiseitl 2001 ; Langeveld et al 2012 ; Fuchs et al 2013 ; Tran and Kang 2013 ; Zubala and Patro 2015 ). The operating principle of such devices is very simple.…”
A decade of observations provided grounds for assessing the operation of one of the few stormwater treatment plants in Poland (system: screens—grit chambers—settler—retention pond) which collects effluents from 471 ha of the city. Among other aspects, the following were evaluated: treatment efficiency, relationship between the quality of treated stormwater and that of waters in the receiving body (the ox-bow lake of the Vistula river), operating stability of key units, significance of the facility for nature. During the assessment, the plant had a positive effect on the quality of stormwater effluents—the content of the analysed pollutants was reduced (more than 80% average efficiency for mineral forms of nitrogen and suspension matter) and oxygen ratios improved (23% increase in the average concentration of dissolved oxygen and more than 50% decrease in 5-day biochemical oxygen demand and chemical oxygen demand). Although the overall assessment of the facility’s operation was good, some omissions and operating errors were noted (method of removing retained pollutants, stormwater flow control). Eliminating them is a prerequisite for maintaining the expected reliability of the system. An effect of stormwater ponds on the increase in biodiversity in the poor urbanised landscape has also been observed. The structures, forming a uniform system along with urban green areas, constitute specific enclaves which attract living organisms.
“…Collection, pretreatment and infiltration of rainwater at the place of its formation are increasingly used. In simple solutions, like permeable surfaces, infiltration basins, settlers and retention ponds, natural selfpurification processes are used (Hossain et al, 2005;Ivanovsky et al, 2018;Zubala & Patro, 2015). Due to the slowdown of flow, ideal conditions for sedimentation, flotation, dilution and sorption are created.…”
The level of pollution and the variability of rainwater runoff quality collected in reservoirs next to the new Lublin bypass (south-eastern Poland) were assessed in this scientific paper. In the rainwater harvesting and treatment system, two types of reservoirs with different construction, size and presence of pre-treatment devices were used. Laboratory tests involved selected physical, oxygen, biogenic, salinity indicators, heavy metals and polycyclic aromatic hydrocarbons. Particularly large variability in concentrations included NO2-, TP, PO43-, K+ and Cl-. Parameters decreasing the water quality were mainly conductivity, BOD5, COD, NO2-, TP and Cl-. High concentrations of salt and phosphorus in collected rainwater require great care in final management (risk of salinization and eutrophication). In the second year of research, there was significant deterioration of water quality, which may result from different weather conditions and gradual accumulation of pollutants in new reservoirs. Not many significant differences were found in the quality of water collected in reservoirs with pre-treatment and without it. Loads of heavy metals and aromatic hydrocarbons in reservoirs were relatively small. However, these impurities have high durability and the ability to accumulate in the environment. Therefore, further studies should also take into account monitoring of bottom sediments and areas adjacent to the bypass.
“…roads, car parks and petrol stations. These include separators, settlers, infiltration basins and retention-infiltration reservoirs (Langeveld et al 2012 ; Moore and Hunt 2012 ; Tran and Kang 2013 ; Zubala and Patro 2015 ). The multiple-element systems of several hectares, receiving rainwater sewage from large areas and performing several functions at the same time, are—unfortunately—rarely used.…”
Several years of observations enabled us to assess the extent and variability of heavy metal contamination (Zn, Cu and Pb) of the sludge of the municipal stormwater treatment plant (the town of Puławy, Poland). In terms of size (high capacity) and innovation, it is the only facility of this kind in the country. It collects rainwater run-offs from two catchments (separate inlets) with a total area of about 500 ha. The concentration of the analysed metals is characterised by a large spatial and temporal diversity. The reason for this may be differences in the manner and intensity of use of drained surfaces and different hydraulic conditions (of sedimentation) prevailing in the particular treatment devices. The highest pollution was found in sediments in the grit chamber and in the part of the settler from the side of the interceptor supplying sewage, i.e. from the main traffic route of the town (heavy traffic and developed technical infrastructure). The best-quality sludge was retained in the pond for treated wastewater. In the pool of analysed components, the largest share is Zn, which amounts to about 85%. The content of heavy metals limits the possibility of the natural use of sludge from the municipal stormwater treatment plant. In chemical terms, they should be seen as a potentially dangerous waste and undergo remediation.
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