Somatic coliphages are a new indicator for monitoring the efficiency of water treatment and purification in the Directive (EU) 2020/2184 of the European Parliament and of the Council of 16 December 2020 on the quality of water intended for human consumption and in Regulation (EU) 2020/741 of the European Parliament and of the Council from 25 May 2020 on minimum requirements for water reuse.
Water technology, water supply, waste water treatment
The aim of this contribution is the presentation of partial results of testing tertiary technology for recycling of treated urban wastewater. The obtain water will be used for watering of greenery, playgrounds, or for street cleaning. The quality of the treated water depends on the purpose of the use.
A proposal for a complete amendment to Directive 98/83/EC on the quality of water intended for human consumption was approved in February 2020. The new Directive came into force after all official procedures on 16 December 2020.
It is shown in the article, how the revision of the Czech methodical standard for abioseston analysis in water ČSN 75 7713 from December 2015 and the lowering of the limit value for abioseston in the Decree No. 252/2004 Coll. (drinking water quality) from 10 to 5% influenced results of routine laboratories.
Enterococci, together with representatives of the species Escherichia coli, belong to the so-called indicators of faecal pollution, which are used in the evaluation of the microbiological quality of bathing waters. Their determination is governed by the Decree of the Ministry of Health No. 238/2011 Coll. and performed by culture on selective agar media.
The Ministry of Health in cooperation with other related bodies compiles, on an annual basis, the List of outdoor bathing sites on surface waters where the bathing service is offered by the operator, and other surface waters used for bathing. It is compiled based on the long-term monitoring, performed, exclusively as in-situ measurements, by the regional hygiene stations. With respect to the fact that this way of monitoring is not only time-consuming but also financially demanding, the need for minimizing these expenses naturally arises.
Possibilities of combined ways of treatment for selected waste types using an experimental equipment for physical waste treatment with the intention of their further use
This article presents possibilities of a unique device for industrial waste treatment using a patented process, and outlines possible future directions. This device, using different physical processes, individually or in synergy, e.g. combined effects of ultrasonic waves, focused microwave field, arc discharges, electrostatic field and the exposure to ultra-violet radiation, is intended to degrade dangerous substances in waste, reducing its hazardous properties for the environment and to prepare the waste for future applications (material or energy), i.e. separately or in combination with other technology processes, such as biotechnology.
Nanomaterials have attracted great attention in diverse areas because of their unique properties. One of the possible nanofiber applications, due to their high surface area, is a biomass carrier, thus the immobilization of the microbial cells followed by the biofilm formation.
Determination of selected illicit drugs in wastewater using liquid chromatography tandem mass spectrometry
The wastewater-based epidemiology approach to the analysis of illicit drugs was conceptualized in 2001 and for the first time was applied in 2005 for cocaine estimation in Italy. Further, other illicit drugs as heroine, cannabis and amphetamine have been estimated.
The article informs about regular, almost two-year long monitoring of municipal wastewater at selected sampling points of the Prague sewerage network. Selected illicit drugs (e.g. methamphetamine, MDMA, THC, cocaine), nicotine and its metabolites and the ethanol metabolite ethyl sulphate are monitored in municipal wastewater.
The report presents a part of the Clean Water – Healthy City project, which deals with the assessment of the river sediments quality with view of the load of priority and priority hazardous substances (PPH substances) which may endanger the aquatic ecosystems and human health during the flood.
The article provides information on the introduction of a new method of continuous monitoring of the biological quality of raw and treated waters at the Želivka Water Treatment Plant. It is the largest water treatment plant for the capital city of Prague.
The article deals with space-time dynamic of non-polar and polar compounds load into the drinking water reservoir Švihov in Želivka river basin during the whole vegetation season by passive sampling techniques. The monitoring on the nine tributaries of the Švihov water reservoir and on the raw water inlet to the Želivka drinking water treatment plant took place for eight months from April to November 2018.
The contribution presents model tests of sorption efficiency and elimination of organic substances, especially pesticides from five different exposed granular activated carbon (GAC). Results can contribute to the understanding of suitable filter lines for the realized investment project GAC filtration.
The quality of sediment in shallow water bodies – long-term screening of sediment in the Czech Republic
This article presents the long-term screening results from the 2011–2019 period. Database of results contains approximately 230 localities. More than 80% of the samples were taken from fishponds.
Fidings from testing of selected biochemical products to the heritage sites water elements environment adjustment
The article is focus on the presentation of knowledge from testing of selected biochemical preparations for the treatment of the environment of water elements of historical gardens and parks and cultural monuments.
This paper presents several cases of unrealized elevated water tank projects in the Czech Republic. It deals with the technical solution of unrealized objects and at the same time presents the reasons why the designers, official bodies or investors led to the search for another solution.
This paper introduces an initial effort at a systematic approach to the typology of elevated water tanks for the purpose of solving the research project Elevated water tanks – identification, documentation, presentation, new use. It builds on the previous definition of the terminology of the problem and the definition of the object of interest. From a typological point of view, elevated water tanks are seen as an integral part of larger technological units – water supply systems. In the framework of the basic division, the typology of elevated water tanks is based on the selection of parameters – the building situation of the tower reservoirs in relation to other objects, the function of elevated water tanks, the supporting structure, the shape and material of the accumulation tank, the number of tanks and the purpose of the object.
Based on existing phosphorus data series in the Slapy and Orlík reservoirs and their main tributaries, we reconstructed P inputs to the reservoirs from the catchment during 1961–2016 and compiled empirical models of P retention.
Clogging is a quite natural process, but it is an undesirable phenomenon in artificial wetlands used for treatment and tertiary treatment of wastewaters. Due to this, it is necessary, during proposal preparation and operation of artificial wetlands, to keep the principles that might significantly restrict the rise and progress of clogging.
The current situation in the field of water resources protection zones in the Czech Republic is problematic for a long time, not only in terms of their definition, but also the correct setting measures or data availability to the public.
Now is the time when even in the Czech Republic we have to save water. In our households do not use it for flushing toilets, used water reuse for irrigation, etc.
The issue of a new usage of industrial heritage (often referred to the concept of conversion) is the current trend of today. Also, water towers shutdown from water networks and stripped of their original mission can offer instead of decay or demolition attractive alternatives to new life.
Use of wastewater‑based epidemiology for monitoring of illicit drugs consumption in Czech and international context
This paper presents a brief summary of information about the project Determination of the amount of illicit drugs and their metabolites in municipal wastewater – new tool for obtaining of complementary data on illicit drug consumption in the Czech Republic and about the 2nd International Conference on “Wastewater‑based drug epidemiology“, which was held from 11.–15. 10. 2015 in Ascona, Switzerland.
Water quality in drinking water reservoir Švihov on Želivka river and its river basin, with focus on specific organic compounds
River basin of the largest drinking water reservoir Švihov on the Želivka River is distinctly anthropogenically affected both by direct human activities and also by the agriculture. The quality of the surface water is endangered in long-term period mainly by the eutrophication, pesticides pollution and erosion.
In this article results of analysis of future water withdrawals from water resources for public water supply systems are summarized.
The paper summarizes the „Methodology for comprehensive management of small water resources to ensure optimal quality of drinking water in normal and emergency situations“ that is a main result of the research project supported by the Technology Agency of the Czech Republic (TA 02020184).
Horizontal and vertical flow constructed wetlands belong among frequently used near-natural methods of treatment of wastewater from small municipalities in the Czech Republic. They consist of one or more filter fields connected in series or in parallel.
SWOT Analysis is a technique used to identify Strengths, Weaknesses, Opportunities and Threats related to a certain project, type of business, business plan, strategic investment, policy (meant as a measure), etc. This method of analysis is predominantly applied in marketing, but also in policy analysis and development.
At the time of changing climatic conditions and reducing the quantity of raw material it is necessary to start saving water and raw materials.
This paper deals with an industrial wastewater treatment utilizing waste heat from related industrial processes. This study proposes a possible solution, which is capable of reduction of industrial wastewater on one side and effective utilization of industrial excess heat on the other.