The process of successful wound healing depends on effective debridement and infection control. One method of wound debridement, known since antiquity, is based on the use of fly larvae. Solid scientific evidence proves that maggot debridement therapy (MDT), like surgical intervention, can be effectively and safely used to remove necrotic tissue. Based on a review of the related literature, this study was designed to assess the effectiveness of chronic wound cleansing with the use of larvae of Lucilia sericata (Phaenicia sericata). Maggot therapy, applied in wound debridement and treatment, is a safe and effective method. Its benefits are associated with debridement, disinfection and faster tissue growth. MDT may reduce the duration of antibiotic therapy and the need for hospitalization, or it may decrease the number of outpatient visits required. It is a relatively cost-effective method, and, in addition to financial gains, it may reduce the frequency of inpatient treatment. In the literature, an increasing amount of scientific evidence confirms that such treatment can effectively reduce the biofilm and bacterial load in a wound.

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W pracy przedstawiono analizę skuteczności działania oczyszczalni ścieków "Kujawy". Jest to mechaniczno-biologiczna oczyszczalnia ścieków z podwyższonym usuwaniem biogenów. Obiekt został zaprojektowany na 251 818 RLM i na przepływ średniodobowy wynoszący 80 000 m3•d-1. W procesie biologicznym wykorzystywany jest trójfazowy reaktor biologiczny, w którym jest prowadzony proces niskoobciążonego osadu czynnego technologią Bardenpho (zmodyfikowaną). Badaniami objęto okres od stycznia 2009 roku do listopada 2014 roku. Analizie poddano następujące wskaźniki zanieczyszczeń: BZT 5 , ChZT Cr , zawiesina ogólna, Nog., Pog.. Uwzględniając wartości poszczególnych wskaźników obliczono stopień redukcji zanieczyszczeń. Dodatkowo obliczono współczynnik niezawodności oczyszczalni dla analizowanych wskaźników zanieczyszczeń. W pracy obliczono podstawowe statystyki opisowe dotyczące wartości badanych wskaźników w ściekach surowych, oczyszczonych oraz ich redukcji. Na podstawie zebranego i przeanalizowanego materiału należy stwierdzić, że oczyszczalnia ścieków "Kujawy" pod względem zmniejszania podstawowych wskaźników zanieczyszczenia ścieków działa poprawnie, natomiast należy zwiększyć skuteczność usuwania azotu ogólnego.

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Organic compounds are the most diverse group of contaminants. The largest anthropogenic source of these contaminants in water is municipal and industrial wastewater. One of the indicators of surface water pollution is biological oxygen demand (BOD). Purifying water from organic micropollutants is a serious challenge and requires the development of newer and more effective methods. The removal of such contaminants is most effective only in advanced oxidation processes (AOP), which include UV photolysis and photocatalysis. The presented results are from preliminary research to evaluate the effectiveness of water treatment by ultraviolet (UV) photolysis and photocatalysis. Treatment efficiency was evaluated on the basis of changes in the BOD index before and after the advanced oxidation process of raw water. The values of the BOD5 index determined in accordance with PN-EN 25813:1997. The exposure time of the samples was a maximum of 60 minutes. The tested material was water samples taken from the Rudawa River, which is one of the drinking water sources for Krakow. The initial BOD5 value (expressed as concentration of O2) for all samples was about 8 mg/L but it has decreased to over 2 mg/L due to AOP processes. This means that after an hour, more than 75% of organic compounds present in the raw water were removed. For photocatalysis (TiO2-MMT), the exposure time of the samples was a maximum of 35 minutes. Water samples taken from the Rudawa River were also used as test material. The initial BOD5 value for all samples was about 9 mg/L but it has decreased to about 4 mg/L due to the photocatalysis process. This means that after 35 minutes, 55% of the organic compounds present in the raw water were removed.