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  2. Zero liquid discharge - Wikipedia

    en.wikipedia.org/wiki/Zero_Liquid_Discharge

    Zero Liquid Discharge (ZLD) is a classification of water treatment processes intended to reduce wastewater efficiently and produce clean water that is suitable for reuse (e.g., irrigation). ZLD systems employ wastewater treatment technologies and desalination to purify and recycle virtually all wastewater received. [1] [2]

  3. List of wastewater treatment technologies - Wikipedia

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

    Oil–water separator; Organisms used in water purification; Parallel plate oil–water separator; Photobioreactor; Reed bed; Regenerative thermal oxidizer; Retention basin; Reverse osmosis; Rotating biological contactor; Sand filter; Screen filter; Sedimentation (water treatment) Septic tank; Septic tank conversion [2] Sequencing batch reactor ...

  4. Lime softening - Wikipedia

    en.wikipedia.org/wiki/Lime_softening

    Lime softening (also known as lime buttering, lime-soda treatment, or Clark's process) [1] is a type of water treatment used for water softening, which uses the addition of limewater (calcium hydroxide) to remove hardness (deposits of calcium and magnesium salts) by precipitation.

  5. Nanotechnology for water purification - Wikipedia

    en.wikipedia.org/wiki/Nanotechnology_for_water...

    Currently nanotechnology plays a vital role in water purification techniques. Nanotechnology is the process of manipulating atoms on a nanoscale. [ 1 ] In nanotechnology, nanomembranes are used with the purpose of softening the water and removal of contaminants such as physical, biological and chemical contaminants.

  6. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    Conditioning of hard water from Tempe, Arizona with different types of treatment methods [19] [20] Treatment Normalized scale formation No treatment 1.00 Electromagnetic Water Treatment 0.57 Electrically Induced Precipitation 0.50 Capacitive Deionization 0.17 Ion exchange 0.06 Template Assisted Crystallization 0.04

  7. Activated sludge - Wikipedia

    en.wikipedia.org/wiki/Activated_sludge

    Activated sludge tank at Beckton sewage treatment plant, UK.The white bubbles are due to the diffused air aeration system. The activated sludge process is a type of biological wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa.

  8. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Portable water purification devices and methods are available for disinfection and treatment in emergencies or in remote locations. Disinfection is the primary goal, since aesthetic considerations such as taste, odour, appearance, and trace chemical contamination do not affect the short-term safety of drinking water.

  9. Groundwater remediation - Wikipedia

    en.wikipedia.org/wiki/Groundwater_remediation

    Ground water remediation techniques span biological, chemical, and physical treatment technologies. Most ground water treatment techniques utilize a combination of technologies. Some of the biological treatment techniques include bioaugmentation, bioventing, biosparging, bioslurping, and phytoremediation.