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2. Organisms involved in water purification - Wikipedia

   en.wikipedia.org/wiki/Organisms_involved_in...

   Biota are an essential component of most sewage treatment processes and many water purification systems. Most of the organisms involved are derived from the waste, wastewater or water stream itself or from the atmosphere or soil water. However some processes, especially those involved in removing very low concentrations of contaminants, may use ...

3. In situ chemical oxidation - Wikipedia

   en.wikipedia.org/wiki/In_situ_chemical_oxidation

   Deep soil mixing requires specialized auger mixing equipment. In order to apply this method in-situ and in deep soil, the oxidant must be pumped to the point of mixing using a kelly bar (a piece of earth drilling equipment), or appropriate piping to the place where the soil needs to be oxidized. The soil then has to be mixed by using mixing blades.

4. Soil test - Wikipedia

   en.wikipedia.org/wiki/Soil_test

   A soil test is a laboratory or in-situ analysis to determine the chemical, physical or biological characteristics of a soil. Possibly the most widely conducted soil tests are those performed to estimate the plant-available concentrations of nutrients in order to provide fertilizer recommendations in agriculture.

5. List of wastewater treatment technologies - Wikipedia

   en.wikipedia.org/wiki/List_of_wastewater...

   Sedimentation (water treatment) Septic tank; Septic tank conversion [2] Sequencing batch reactor; Sewage treatment; Skimmer (machine) Slow sand filter; Stabilization pond; Supercritical water oxidation (SCWO) Thermal hydrolysis; Treatment pond; Trickle-bed reactor; Trickling filter; Ultrafiltration; Ultraviolet disinfection; Upflow anaerobic ...

6. Battelle Memorial Institute - Wikipedia

   en.wikipedia.org/wiki/Battelle_Memorial_Institute

   Covid rapid test - In April 2020, Battelle Memorial Institute partnered with Ohio State University to distribute rapid tests for Covid-19, with results in less than 5 hours. [ 14 ] [ 15 ] N95 respirator decontamination - On March 29, 2020, Battelle announced that it had received an Emergency Use Authorization to deploy a system to decontaminate ...

7. Percolation test - Wikipedia

   en.wikipedia.org/wiki/Percolation_test

   A percolation test (colloquially called a perc test) is a test to determine the water absorption rate of soil (that is, its capacity for percolation) in preparation for the building of a septic drain field (leach field) or infiltration basin. [1] The results of a percolation test are required to design a septic system properly.

8. Constructed wetland - Wikipedia

   en.wikipedia.org/wiki/Constructed_wetland

   Process flow diagram for a sewage treatment plant with subsurface flow constructed wetlands. Constructed wetland systems can be surface flow systems with only free-floating macrophytes, floating-leaved macrophytes, or submerged macrophytes; however, typical free water surface systems are usually constructed with emergent macrophytes. [17]

9. Biofilter - Wikipedia

   en.wikipedia.org/wiki/Biofilter

   These biological treatment systems effectively reduce water-borne diseases, dissolved organic carbon, turbidity and color in surface water, thus improving overall water quality. Typically in drinking water treatment; granular activated carbon or sand filters are used to prevent re-growth of microorganisms in water distribution pipes by reducing ...