The study presents the results of the research under contain a nitrogen and a phosphorus in the Dobczyce reservoir's inflows (in a period July-December 2003 year). There was a drought time, which characterized a low precipitations. The research has done on a shot in a five direct inflows of reservoir: Ratanica, Brzezówka, Dębnik, Wolnica i Trzemeśnianka and in the Raba river (Osieczany section). Obteinable results of the research with six measuring sections were compared and on this basis, water was qualified to an appropriate grade. The direct inflows of the Dobczyce reservoir, which was investigated on a contain a nitrogen and a phosphorus, wasn't serious endangered in a half a 2003 year. The inflows was moderate prosperous in a nitrogen compounds and affluent in a phosphorus compounds. The water of streams investigated rest on value of concentration nitrogen in a form: amonium nitrogen, nitrate nitrogen and nitrite nitrogen according to a decree of 1991 can qualify for a first class purity. According to a proposal decree can qualify for a first class with exception of the Ratanica stream and the Trzemeśnianka stream, concering to nitrite nitrogen. There is a worse qualify of water in the Raba river, becouse of amonium ...
Paper concerns the small reservoir Młyny II located in km 6,968 of river Julianpolka, place Młyny, commune Rudniki, Opole Province. Młyny reservoir II is one of nine of small dam reservoirs situated in Opole Provine. It has a lot of functions: agricultural irrigation, fish farming and recreation. Reservoir are is 4,53 ha, and capacity 81 540 m3. The aim of this work is presenetation of study results of water quality on river Julianpolka flowing across Młyny reservoir. Investigations has been performed in period from January 2006 to December 2006. Measurements concern following water quality indexes: nitrates, nitrites, ammonia, phosphates, BOD, COD, water reaction, electrolytic conductivity and water temperature. Studies showed that water from Młyny reservoir had lower content of nitrates, phoshpates and electrolytic conductivity. Started investigations on Młyny reservoir deliver information on water quality inflowing and outflowing from this reservoir, and facilitate to make correct economic decisions connected with storied water use at reservoir and protection. ...
Green roofs are one of the method of recovering green space in urban are-as. They are also effective in improvement of air quality and local climate as well as play an important role in thermal insulation of buildings. The most important role they play in urban areas is rain water retention and delaying of the runoff. The main goal of the research was to estimate potential influence of the green roof substrate on runoff water quality. Preliminary results show increase of the con-centration of phosphates and total solids in leachate. Mean concentration of solids in intensive roof substrate leachate amounted 231 mg dm-3 and in extensive sub-strate leachate 274 mg dm-3, comparing to concentration 6-7 mg dm-3 in simulated rain. Phosphorus concentration in intensive and extensive substrate runoff amounted 0,112 mgPO4-P dm-3 and 0,126 mgPO4-P dm-3 respectively. Phosphorus concentration in simulated rain amounted 0,056 mgPO4-P dm-3. Even if the concentrations in substrate leachate are low, phosphorus can still be an important factor influencing green roofs runoff receiver quality. ...
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 ...
Air pollution, noise, omnipresent traffic and the accompanying stress make an adverse effect on human life in the city. In addition, buildings and related umpermeable surfaces, enhance the urban heat island effect and cause problems with the management of rainwater. Therefore, modern housing developments must meet the challenge of ensuring a high quality of life for residents. This effect can be achieved by putting on the green, including green roofs, and the construction of ponds in the form of rainwater management systems. Another challenge is to maintain the quality of water in the reservoir. The paper presents the results of two reactive materials laboratory scale tests, for their use in order to maintain the level of phosphorus in the water. According to the FLL guidelines (2011) for swimming ponds, phosphorus concentration below 0.01 mg/L will provide transparent and visually attractive water. Studies have shown that the opoka turned out to be more effective sorbent for phosphorus than dedicated to this goal commercial product FerroSorp®. ...
Soilless cultivation of tomatoes in the greenhouse is a source of waste in form of mineral wool polyethylene. Utilisation of mineral wool waste originating from horticulture is still unresolved and rises a lot of controversy The aim of the study is to evaluate the possibility of using mineral wool waste in the construction of a green roof. To find the answer, physical properties, i.e. water absorption, water capacity and leachability were assessed for fresh mat and mineral wool waste. Preliminary assessment of pollutants leaching from mineral wool waste was also performed. It was found that the physical properties of the used mats are different from those of the input material. The content of phosphorus in leachate from used mineral wool derived from greenhouse cultivation excludes its use as a material for green roofs construction, if the runoff is discharged into water bodies. ...
The plant material were plants of sandy everlasting (Helichrysum arenarium (L.) Moench) collected from natural locations in October 2012. Initial explants were apical buds enfolded into two leaves. Isolated explants were chemically sterilized. Reproducted shoots were divided and put into three types of mediums: medium MS (control) containing 37 mg P∙dm-3, medium MS without additive of P (0,0 mg P∙dm-3), medium MS with additional amound of P (74 mg P∙dm-3). The aim of research was to specify the influence of phosphorus content in medium for choosen growth parameters and accumulation of assimilatory pigments: chlorophyll a, b, chlorophyll a+b, carotenoids. Analysis of these compounds were done spectrophotometrically. The made research, proved, that the richest in mentioned substances were microseedlings growing on the medium with increased amount of phosphorus. Phosphorus deficiency in medium MS had a statistically essential effect on changes in growth modifications of microseedlings of sandy everlasting (Helichrysum arenarium (L.) Moench). Additional amount of phosphorus in the medium had a statistically essential effect on increasing of chlorophyll a+b in comparison with plants growing on the medium MS with optimal phosphorus amount or without this element by accordinglly 36% and 23%. Moreover, it caused a growth of ...
The aim of the paper is to evaluate the possibility of using autoclaved aerated concrete as a reactive material to remove phosphorus from water and wastewater. To this study autoclaved aerated concrete produced by sand technology was used. During 60 minutes contact time batch test the reactive material reduced 82% of P from the solution. Laboratory tests have shown that the material has a good sorption capacity (6.03 mg g-1). The estimated maximum value of sorption capacity Smax based on the Langmuir isotherm is 16.87 mg P-PO4 g-1. Autoclaved aerated concrete may be used as a filter medium for removing phosphorus from contaminated surface water, rain water and also in small sewage treatment plants as a further step of removing phosphorus from waste water. ...
The most of the on site wastewater treatment systems in Poland discharges treated effluent to the soil. The goal of phosphorus (P) reduction from dispersed sources of pollution can be achieved by application of P reactive materials in the construction of wastewater infiltration systems. Two P reactive materials were tested in this study: Polonite® in grains of 26 mm and lightweight aggregate Leca® in grains of 410 mm. Apparent P sorption capacity was assesed on 40.9 mg·g-1 (Polonite®) and 5.1 mg·g-1 (Leca®). Both materials sorbed P-PO4 very fast, after 15 min over 90% of P was removed from solution and wastwater. Wastewater used in this study came from the outlet from the septic tank of on site septic system. P-PO4 solution was prepared from KH2PO4 and the tap water. In the small column experiment, four collumns (2 filled with Polonite® and 2 filled with Leca®) were fed with wastewater and P-PO4 solution in hydraulic loadings of 3040 dm3·m-2·d-1. All the columns removed significant amounts of P from both solution and wastewater with the reduction between 28.3% and 72.5%. The mean P-PO4 effluent concentrations ranged from 1.21 mg·dm-3 to 7.12 mg·dm-3. The best overall performance was achieved by the Polonite® fed ...
