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Aineistot 1-10 / 20
Suitability of electrocoagulation for industrial wastewaters and changing water quality
(2019)
Electrochemical water treatment methods are well suited for treatment of wastewater without a need for coagulation chemicals thus eliminating residual concentrations. The target of this master thesis is to evaluate the ...
Modeling and dynamic simulation of MBR process in Metsä-Sairila WWTP
(2019)
A new membrane bioreactor will be in operation in Mikkeli in 2020 with a population equivalent of around 63,000. The aim of this study is to determine parameters that cause fouling in Membrane Bioreactors, study the dynamics ...
Utilizing energy measurement system in wastewater treatment to reduce costs and greenhouse gas emissions : Case Lahti Aqua
(2021)
Wastewater treatment is going through critical period where energy efficiency and both carbon neutrality and energy self-sufficiency direct the development of the whole field of business. Especially monitoring the electricity ...
Environmental impacts of recycling-based cellulose carbamate fiber
(2020)
Over 100 million tons of textile fibers are consumed by the global textile industry every year. Most of these fibers are currently produced from virgin raw materials, and the environmental impacts of their production are ...
Jätevedenpuhdistamon suorituskykymittariston suunnittelu : tapaus: Kariniemen jätevedenpuhdistamo
(2021)
Moni yritys käyttää suorituskykymittaristoa seuratakseen ja kehittääkseen liiketoimintaansa. Tämän diplomityön tavoitteena on laatia suorituskykymittaristo jätevedenpuhdistamon tarpeisiin. Suorituskykymittariston suunnittelu ...
Possibilities to prevent and remove marine litter
(2021)
Marine litter is a major global problem that affects not only the environment, but also the economy and the society. The main source of marine litter comes from land-based activities, of which a large quantity of land-based ...
Perspectives of sustainability actors in an outdoor recreation economically dependent community : a qualitative case study assessed with strong and weak sustainability
(2020)
An emergent design qualitative case study investigation is performed interviewing ten active sustainability actors in the research setting of Vail, Colorado, USA guided with the central research question of “what are the ...
Metsäteollisuusintegraatin vesitase nyt ja tulevaisuudessa
(2019)
Vesitase kuvaa tyypillisesti prosessiin tuotavan veden määrää, kuinka vesimäärä jakautuu kulutuskohteille ja kuinka paljon vettä poistuu prosessista. Tässä diplomityössä selvitettiin erään sellu- ja paperitehtaan kesän ja ...
Production of polyhydroxyalkanoates (PHA) from wastewater in Lahti Region : a techno-economic assessment
(2022)
This research explores the feasibility of producing renewable PHA plastic from the sludge of wastewater treatment plants (WWTPs) in Finland, with a centralized extraction location in the Lahti region. With a current market ...
Kemikaloinnin kehittäminen rehevöityneiden järvien kunnostusmenetelmänä
(2021)
Suomessa on satoja rehevöityneitä järviä, joiden hyvän ekologisen tilan saavuttaminen edellyttää oikein kohdennettuja kunnostustoimenpiteitä. Tässä diplomityössä keskitytään siihen, kuinka vähentää järven sisäistä kuormitusta ...