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<td style="width:1.25em;">
</td>
<td style="width:15em;">
<ul>
<li>
<a href="https://en.wikipedia.org/wiki/Dissolved_air_flotation" title="Dissolved air flotation">Dissolved air flotation</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Distillation" title="Distillation">Distillation</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Desalination" title="Desalination">Desalination</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/EcocyclET_systems" title="EcocyclET systems">EcocyclET systems</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Electrocoagulation" title="Electrocoagulation">Electrocoagulation</a>
</li>
<li style="font-weight: bold; ">
<a href="https://en.wikipedia.org/wiki/Electrodeionization" title="Electrodeionization">Electrodeionization</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Electrolysis" title="Electrolysis">Electrolysis</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Expanded_granular_sludge_bed_digestion" title="Expanded granular sludge bed digestion">Expanded granular sludge bed digestion</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Facultative_lagoon" title="Facultative lagoon">Facultative lagoon</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Fenton%27s_reagent" title="Fenton's reagent">Fenton’s reagent</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Fine_bubble_diffusers" title="Fine bubble diffusers">Fine bubble diffusers</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Flocculation" title="Flocculation">Flocculation</a> & <a href="https://en.wikipedia.org/wiki/Sedimentation" title="Sedimentation">sedimentation</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Flotation_process" title="Flotation process">Flotation process</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Froth_flotation" title="Froth flotation">Froth flotation</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Humanure" title="Humanure" class="mw-redirect">Humanure (composting)</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Imhoff_tank" title="Imhoff tank">Imhoff tank</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Iodine" title="Iodine">Iodine</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Ion_exchange" title="Ion exchange">Ion exchange</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Lamella_clarifier" title="Lamella clarifier">Lamella clarifier</a> (Inclined Plate Clarifier)<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span>[</span>2<span>]</span></a></sup>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Living_machines" title="Living machines">Living machines</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Maceration_(sewage)" title="Maceration (sewage)">Maceration (sewage)</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Microbial_fuel_cell" title="Microbial fuel cell">Microbial fuel cell</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Media_filter" title="Media filter">Media filter</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Membrane_bioreactor" title="Membrane bioreactor">Membrane bioreactor</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Nanotechnology" title="Nanotechnology">Nanotechnology</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/NERV_(Reactor)" title="NERV (Reactor)" class="mw-redirect">NERV</a> (Natural Endogenous Respiration Vessel)
</li>
</ul>
</td>
<td style="width:1.25em;">
</td>
<td style="width:15em;">
<ul>
<li>
<a href="https://en.wikipedia.org/wiki/API_oil-water_separator" title="API oil-water separator">Parallel plate oil-water separator</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Reed_bed" title="Reed bed">Reed bed</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Retention_basin" title="Retention basin">Retention basin</a>
</li>
<li style="font-weight: bold; ">
<a href="https://en.wikipedia.org/wiki/Reverse_osmosis" title="Reverse osmosis">Reverse osmosis</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Rotating_biological_contactor" title="Rotating biological contactor">Rotating biological contactor</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Sand_filter" title="Sand filter">Sand filter</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Sedimentation" title="Sedimentation">Sedimentation</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Sedimentation_(water_treatment)" title="Sedimentation (water treatment)">Sedimentation (water treatment)</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Septic_tank" title="Septic tank">Septic tank</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Sequencing_batch_reactor" title="Sequencing batch reactor">Sequencing batch reactor</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Sewage_treatment" title="Sewage treatment">Sewage treatment</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Stabilization_pond" title="Stabilization pond">Stabilization pond</a>
</li>
<li>
<a href="/w/index.php?title=Submerged_aerated_filter&action=edit&redlink=1" class="new" title="Submerged aerated filter (page does not exist)">Submerged aerated filter</a><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span>[</span>3<span>]</span></a></sup>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Treatment_pond" title="Treatment pond">Treatment pond</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Thermal_hydrolysis" title="Thermal hydrolysis">Thermal hydrolysis</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Trickling_filter" title="Trickling filter">Trickling filter</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Sewage_treatment" title="Sewage treatment">soil bio-technology</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Ultrafiltration" title="Ultrafiltration">Ultrafiltration</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Ultraviolet_disinfection" title="Ultraviolet disinfection" class="mw-redirect">Ultraviolet disinfection</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Upflow_anaerobic_sludge_blanket_digestion" title="Upflow anaerobic sludge blanket digestion">Upflow anaerobic sludge blanket digestion</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Vacuum_evaporation" title="Vacuum evaporation">Vacuum evaporation</a>
</li>
<li>
<a href="https://en.wikipedia.org/wiki/Wet_oxidation" title="Wet oxidation">Wet oxidation</a>
</li>
</ul>
</td>