\documentclass{article} \usepackage{Engineering} \pdftitle{UT} % === TEXT === \title{\textbf{Basis of Sustainable Environmental Systems \\ HSLU, Semester 3}} \author{Matteo Frongillo} \begin{document} \maketitle \tableofcontents \pagebreak \part{TODO ops} i'll do it later don't worry \newpage \part{Separation techniques} \section{A bit of chem again} \subsection{Solutions key terms} \begin{itemize} \item \textbf{Solvent}: the substance that dissolves another substance \item \textbf{Solute}: the substance that is dissolved in a solvent \item \textbf{Solution}: it's a homogeneous mixture of two or more substances \end{itemize} What it is needed? \begin{itemize} \item Identify the substances to be separated from the mixture \item To collect useful substances free from impurities \item To remove unwanted particles \end{itemize} \subsection{Classification of techniques} \begin{figure*}[ht!] \centering \includegraphics[width=\textwidth]{media/techniques_overview.png} \caption*{Separation techniques overview} \end{figure*} \section{Physical separation} \subsection{Sedimentation} \subsection{Decantation} \subsection{Filtration} \subsubsection{Sand filtration} \subsubsection{Reverse osmosis} \subsection{Centrifugation} \subsection{Dissolved Air Flotation (DAF)} \subsection{Magnetic separation} \subsection{Screening and Sieving} \newpage \section{Chemical separation} \subsection{Flocculation} \subsubsection{Flocculant} \subsubsection{Coagulation} \subsection{Electrocoagulation} \subsection{Precipitation} \subsection{Adsorbtion} \subsubsection{Activated carbon} \subsection{Absorption} \subsubsection{Wet scrubber} \subsection{Ion exchange} \subsection{Crystallization} \subsection{Evaporation} \subsection{Sublimation} \newpage \section{Advanced/Emerging separation} \subsection{Mebrane filtration} \subsubsection{Micro osmosis} \subsubsection{Nano osmosis} \subsubsection{Ultra osmosis} \subsubsection{Reverse osmosis} \subsection{Electrodialysis} \subsection{Extraction} \subsubsection{Liquid-Liquid Extraction (LLE)} \subsubsection{Soxhlet extraction} \subsubsection{Supercritical Fluid Extraction} \subsection{Air stripping} Same as Wet Scrubber, but with water \subsection{Electrostatic precipitator (ESP)} \newpage \section{Biological separation} \subsection{Bioremediation} \begin{itemize} \item Miicroorganisms degrade hazardous substances \item Useful for oil spills, soil remediation \end{itemize} \subsection{Activated Sludge Process} \begin{itemize} \item Aerobic digestion of organic matter \item Common in sewage treatment \item A parameter to monitor is the BOD (Biochemical Oxygen Demand) and COD (Chemical Oxygen Demand) \item Nitrification and Denitrification \end{itemize} \subsection{Constructed Wetlands} \begin{itemize} \item Mimics natural wetlands to treat wastewater \item Sustainable and low-maintenance \item Three types \item It takes 1-4 weeks to treat the water \end{itemize} \part{Ecological sanitation} \dots \section{Some principles of Sanitation} \section{Objectives of ecological sanitation} \begin{itemize} \item Provide affordable, hygenically safe, and desirable sanitary facilites \item Reduce the health risks related to sanitation, contaminated water an waste \item Prevent the pollution of surface and groundwater; precenti the degradation of soil fertility \item Optimise the management of nutrients and water resources \end{itemize} \section{Principle of treatments and recycling} \section{Wastewater management} \subsection{Issues with current wastewater management (Linear End-of-Pipe Technology)} \subsubsection{Poor treatment or uncontrolled discharge} \subsubsection{High water use} \subsubsection{Costly systems} \subsubsection{Unequal service} \subsubsection{Resource loss} \subsubsection{Sewage sludge issues} \subsection{Benefits of Material Flow Cycle (Instead of Disposal)} \subsubsection{Better health} \subsubsection{Resource recovery} \subsubsection{Soil and crop benefits} \subsubsection{Resource efficiency} \subsubsection{Smarter systems} \subsubsection{Holistic approach} \section{Separation of substances} \begin{figure*}[ht!] \centering \includegraphics[width=\textwidth]{media/separation_of_substances.png} \end{figure*} \end{document}