Artificially created wetlands have great potential for sewage treatment. Their use is possible in areas where they still lack sewage or leads to poor wastewater handling various kinds. Constructed wetlands for wastewater treatment can be an adequate alternative to conventional centralized systems. In accordance with the requirements of sustainable development in terms of decentralized solutions. In a review of thesis provides an overview of legislation that relate to the design, permitting and implementation of wetlands. It introduces the principles of functioning, history and current state of the relevant issues. It analyzes the possible technical solutions. In the practical part to a specific location, which is located in the cadastral Kozicin is applied proposal reed beds. The proposal was preceded by field research community and based on the specific conditions of the territory. They are determined volumes of waste water and the amount of expected pollutants whose elimination is to take place. Subsequently designed space for placement and basic parameters root filters together with other related objects so that the way of solving environmental depollution wastewater was indeed effective. The conclusion is made a summary of the various measures to be followed in order to achieve the desired results.

The Diploma thesis deals with the topic of hydrological extremes from a public administration and a general public point of view. The literary researches defines present manners of economy process with rainwater in urbanised and open landscape. This part focuses on extreme phenomena and their characteristics in case of floods and droughts in Czech Republic. The thesis also mentions causes of unsustainability of current methods of drainage and talks about the legislation that regulates management of rainwater. It also provides description of multiple variants of regulatory water management measures aimed at rainwater retention and infiltration in urbanized areas. The practical part is focused on the survey (using a questionnaire) of perception of rainwater management and extreme hydrological phenomena by public administration and the general public in the Czech Republic.

The thesis deals with the constructed wetlands (an aquatic plant root filter). It characterizes a principle of effluent treatment, types of wetlands and treatment process. A part of the thesis is focused on wastewater sampling sites in Lhota u Nahořan (situated nearby Náchod in Hradec Králové region) and on process of their evaluation. It also describes the location and method of wastewater flow measurement. The collected indicators of pollution and flow rates of the brook in Lhota were used for hydro-technical calculations required for their own constructed wetland project in Lhota u Nahořan. There are two design options suggested for this given location with a population of 73 residents and where the average wastewater flow, as measured, is 113.18 m3/d. The target rates of the ammonia nitrogen and the total phosphorus in the effluent were determined to be 0.5 mg/l. The first version of the solution was according to the horizontal and the other to the vertical filters. The main advantages of this this solution using aquatic plant root filters include a naturally replicated process of wastewater treatment and low operating costs. Also for these reasons, this green zone method is increasingly used for homes, holiday residences and communities.

Illegal gold mining galamsey is an issue of utmost concern in modern day politics in Ghana is sustainable development is to be achieved. Mining for mineral in general can lead to a boom in the economy since it affects multiple disciplines. This phenomenon holds for both legal and illegal mining. There is a cost however associated with this economic boom. This thesis aimed at assessing the impact of illegal mining in forest ecosystems and stream water quality. The case study was on River Birim in Ghana and the trends were compared with the current situation within the European Union (EU). The approach for this thesis was mainly a case study design. However qualitative, quantitative as well as mixed methods was also adopted in the methodology. Data were collected from relevant sources and a set of questionnaires administered. In all, 270 sampled questionnaires were successfully administered out of the total population and were used in the analysis. Based on responses obtained from the respondents, field observation and supporting data available, it was noticed that illegal mining had an adverse effect on the surrounding communities. Some common negative effects of illegal mining identified were; depletion of natural resources, pollution of water bodies and destruction of ecosystems. It was deduced that water, though scarcely available within the EU was comparatively unpolluted and mining activities properly regulated. As a recommendation, it was suggested that government, local authorities and stakeholders should increase efficiency in the regulation of small-scale miners and their activities in order to reduce the ill-effect of mining to surrounding communities and the country in totality.

This thesis titled Analysis of water quality in the reservoir Plumlov solves water quality issues of this water piece of work. The thesis includes a literature review on the topic of water pollution. In this literature review I address basic information about water, legislation related to water and characteristic of this chosen water piece of work. The field survey, sampling of reservoir and their evaluation in the laboratory are processed in the methodology. The results are shown in graphs which are described. In conclusion of my thesis is the overall assessment of indicators of the water quality. There are also summarized corrective measures for water in the Plumlov reservoir.

The thesis deals with landfilling, monitoring leachate from landfill and toxicity of this water. The beginning of theoretical part is focusing on the characteristics of municipal waste and description of the landfill process. The next part is focusing on description of the discipline of ecotoxicology and its basic methods. The work contains information about landfill Štěpánovice, which is located in the region Plzeň. The practical part of the thesis focuses on the description of performed testing of semichronic toxicity of leachate water from the landfill Štěpánovice with the help of seeds of white mustard (Sinapis alba L.). In conclusion, there are mentioned results of the test, which consist of calculating the root growth inhibition for a given concentration of the test substance.

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