• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 95
  • 70
  • 67
  • 33
  • 16
  • 5
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • Tagged with
  • 319
  • 319
  • 166
  • 151
  • 72
  • 72
  • 68
  • 67
  • 61
  • 57
  • 40
  • 36
  • 32
  • 31
  • 30
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
271

Tertiary wastewater treatment using riparian wetlands: A curriculum guide for high school students

Norwood, Robert Lee 01 January 1997 (has links)
No description available.
272

Nakládání s odpadními vodami v obci Sudice / Wastewater management in the village Sudice

Hoferková, Lenka January 2018 (has links)
This thesis is written due to the poor quality of the stream Sudický potok and the fish kills in nearby ponds supplied by the stream. The goal is evaluating the results of the water samples obtained from the four local spots. Polluted quality in the stream in the Sudice town then proceed to design three various solutions of the sewage collection systems. The first option is designing the municipal wastewater treatment plant and the draining wastewater by single sewerage or sanitary sewerage. The second choice designs the domestic waste water treatment plants. The third solution is designing the sanitary sewerage and effluent sewerage to the nearby waste water treatment plant in Šebetov town. All variants are economically evaluated. In conclusion the first solution, municipal waste water treatment plant with the single sewerage, is recommended.
273

Návrh rekonstrukce přivaděče surové vody pro úpravnu vody / Reconstruction proposal of raw water supply for water treatment plant

Pasnichenko, Dmytro January 2021 (has links)
This diploma thesis deals with the assessment of the technical condition of the raw water supply Dnipro-Mykolaiv for water treatment plant Inhulets in Ukraine and the reconstruction proposal of the section of this supply. Specifically, it is a 300 m long section of the steel pipeline DN 1 400 of the first row of the sypply near the Myrné village in Bilozerka Raion (district), Kherson Oblast (province), Ukraine, which is in a state of disrepair. As part of this work is an an evaluation of the current technical condition of the pipeslines of the first and second rows of the suplly. Subsequently, the design of the reconstruction of the section is then carried out using selected remediation technology.
274

Bisfenol A ve vodním ekosystému / Bisphenol A in water ecosystem

Nohelová, Gabriela January 2014 (has links)
This diploma thesis deals with Bisphenol A, especially with its impact on the aquatic ecosystem. Information about its properties, production and current use are summarized here. Its harmful impact on the environment, especially on the aquatic ecosystem and the human body is characterized. Also the methods of its degradation within the aquatic environment have been described. A summary of the options of a determination of Bisphenol A in water samples is incorporated and the method of gas chromatography with mass spectrometry (GC/TOF MS) and comprehensive two-dimensional gas chromatography with mass spectrometry (GCxGC/TOF-MS) is compared in the experimental part. Analytical determination precedes the isolation of the analyte from the water samples by solid phase extraction (SPE) using SupelcleanTM ENVITM - 18 and derivatization using the silylation reagent, N,O-bis(trimethylsilyl)trifluoroacetamide (BSTFA). The result of this work is the analysis of a series of real samples from wastewater treatment plants Brno Modřice and Luhačovice by a two-dimensional gas chromatography with mass spectrometry (GCxGC/TOF-MS).
275

Kontaminace životního prostředí musk sloučeninami / Contamination of environment of musk compounds

Tobková, Lenka January 2015 (has links)
Synthetic musk compounds are artificial organic substances commonly used as fragrant constituents of personal care products as parfums, cosmetics, detergents, in-house cleaning and washing agents. Given their large area of applications and their ability to be persistent, they leaked into all parts of ecosystem, especially aquatic one. There have been a big focus on studiyng these compounds, their properties and fate in the different parts of ecosystems in the last years. The aim of master's thesis was carry out the determination of five representatives (habanolide, exaltolide, ambrettolide, musk MC4 and ethylene brassylate) of macrocyclic musk compounds in waste water samples from influent and effluent of three water treatment plants (WWTP Brno-Modřice, WWTP Lednice and WWTP Mikulov). One of the main tasks was to perform a method optimisation for the determination of selected musk compounds in waste water and evaluation and interpretation of the results. Solid phase microextraction (SPME) technique was used for the extraction of analytes, consequently gas chromatography-mass spectrometry was used for analysis of selected analytes. Following evaluation the removal efficiency of musk compounds in the waste water treatment plant was assessed.
276

Metody rozpočtování inženýrských a vodohospodářských staveb / Methods of estimating costs for engineering and water management structures

Ovečková, Lenka January 2013 (has links)
Main intention of the thesis is to name and explain budgeting methods of building constructions with main focus on creating budget for water management and engineering structures. The practical part presents itemized budgets for a wastewater treatment plant and a bicycle trail. After that the price determined of the itemized budget is compared to the price determined by budget indicator.
277

Studie variant čištění specifických odpadních vod / Study variants of specific wastewater treatment

Pernička, Jan January 2013 (has links)
This diploma thesis explores treatment options of wastewater with a low presence of organic pollution produced by minor pollution sources. The research part describes objects with a low presence of organic pollution in wastewater and possible treatment methods in dependence of pollution source's size. The practical part contains the design of technological options of treatment of wastewater with a low presence of organic pollution for a specific object.
278

Čistírny odpadních vod v horských oblastech / WWTP´s in mountains areas

Frank, Ivo January 2014 (has links)
Objectives of this master's thesis are to process review of technologies used to treat wastewater in alpine environment in Slovakia and in foreign countries. Thesis also includes mapping of situation of chosen alpine cottages in High Tatras. For cottages with unsuitable technology will be suggested more suitable solution.
279

Formy jištění obchodního rizika stavebního díla / Forms of Business Risk Protection of Construction Work

Štaffa, Jan January 2015 (has links)
This master’s thesis is focused on the business risk protection in construction projects. The first part is dedicated to an interpretation of theoretical knowledge which defines and describes the risk, acquaints readers with principles of the risk management and presents commonly used forms of the business risk protection in practice. The second part deals with a practical use of the protection tools and proposes their effective adjustment in the selected public works contracts.
280

Provozně technický stav objektů separace na úpravnách vody / Operational and Technical Condition of Separation Equipment in Water Treatment Plants

Pešout, Jakub January 2015 (has links)
The goal of this thesis was to determine the operational and technical parameters of the separation objects in water treatment. The first part is a theoretical and provides basic information on this issue. The second part contains the evaluation criteria created by the obtained information for individual objects and gained in practice by personal visits of selected treatment plants of water. In the last part we can find application of these criteria in water treatment in practice. There is also included the final evaluation of the researched condition.

Page generated in 0.0838 seconds