The paper attempts to evaluate effectiveness of treatment of wastewater in sewage treatment plant in Paczków which is used in hydroponic technology. In order to determine the efficiency of wastewater treatment for the removal of nitrogen, phosphorus, suspended solids, BOD5 and COD, results of analyses of wastewater collected at the inlet of the treatment plant and at the outlet of the object were analyzed. Research period covered the years 2009 to 2011. Analysis of the data showed that the purification efficiency related to all parameters did not drop below 77.0%. The biggest effectiveness of sewage treatment was observed for total suspended solids (99.0%) for BOD and phosphorus it was at least 98.0% and 98.1%, and for COD - 94.8%. The lowest efficacy of treatment (but not less than 77.0%) was found for total nitrogen, which allowed concentration in sewage at the outlet from wastewater treatment plant has been exceeded several times during the study period. Based on the results of analyzes and literature studies was found that the hydroponic block which is tertiary step of urban wastewater treatment allows for considerable reduction of values of individual pollutants in discharged wastewater to make it possible to reach at the outlet ...
Intense, prolonged rainfall combined with low capacity and stuffy storm-water drainage system may be the cause of severe economic losses as a result of the presence of inundation, flooding of urban areas, or washout the surface of the ground. There are also failures on wastewater treatment plant. Flash runoff from urban area can cause damage of wastewater treatment plant components, hydraulic overload and affect on the process of biological treatment by changing the quantitative and qualitative parameters of the influent.The purpose of this article is to present the experience gained in the operation of the wastewater treatment plant in adverse weather conditions and indicate lack of classification this type of objects as objects of critical infrastructure that is dangerous to the life, health, property or the environment.
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The increasing of standard living causes the increases energy consumption and waste or wastewater production. The possibility to combine wastewater treatment and electricity production can accomplish a microbial fuel cell. The possibility of wastewater treatment using the Cu-B catalyst with KMnO4 catholyte for microbial fuel cells is presented in this paper. The measurements covered comparison of changes in the concentration of COD, NH4+ and NO3- in the reactor without aeration, with aeration and with using a microbial fuel cell (with Cu-B cathode and KMnO4 catholyte). The reduction time for COD with the use of microbial fuel cell with the Cu-B catalyst (and KMnO4 catholyte) is similar to the reduction time with aeration. It has been shown that the Cu-B (with KMnO4 catholyte) can be used as cathode catalyst in microbial fuel cells. Unfortunately in this case is needed to constant delivery of catholyte. ...
The possibility to combine wastewater treatment and electricity production can accomplish a microbial fuel cell. Microbial fuel cells use glucose from wastewater as a fuel. In recent years, both production of municipal and industry wastewater increases very much. Municipal wastewater is directed to the wastewater treatment plant. While industry wastewater can be use as a fertilizer. But, both municipal and industry wastewater can be used in the microbial fuel cells. The comparison of powering the microbial fuel cell with municipal and process wastewater from yeast production is presented in this paper. The measurements covered comparison of changes in the concentration of COD in the reactor without aeration, with aeration and with using a microbial fuel cell (powered with municipal and industry wastewater). The results of measurements of COD showed no differences between the microbial fuel cell powered with municipal wastewater and the microbial fuel cell powered with process yeast wastewater. But, the power output is higher with using process yeast wastewater to powering the microbial fuel cell. ...
