Friday, April 20, 2018

Liquid waste management - Types and treatment

LIQUID WASTE
Liquid waste can be defined as such Liquids as wastewater, fats, oils or grease (FOG), used oil, liquids, solids, gases, or sludges and hazardous household liquids. These liquids that are hazardous or potentially harmful to human health or the environment. They can also be discarded commercial products classified as “Liquid Industrial Waste” such as cleaning fluids or pesticides, or the by-products of manufacturing processes. 

Types of Industrial Wastewater

  • Inorganic wastewater
  • Organic wastewater
  • Listed hazardous wastewater
  • Industrial wastewater with heavy metals
  • Industrial wastewater with organics
  • Non-hazardous wastewater
  • Oil and water mixtures

Industrial Wastewater Treatment Technologies
  • Chemical oxidation and reduction
  • Acid/Base neutralization
  • Chemical precipitation of metals
  • Flocculation
  • Filtration
  • Carbon adsorption
  • Supercritical fluid extraction
  • Biological treatment
  • Oil/Water separation
  • Stabilization through encapsulation


Liquid wastes are not suitable for disposal to any class of landfill because they:
  • increase the volume of leachate generated and requiring treatment and/or disposal
  • can result in increased odour nuisance
  • can reduce the stability of the refuse mass under certain conditions.

Liquid waste encompasses all waste in liquid form, it includes both waste produced as a liquid and waste that has been converted into a liquid for handling. Similarly, it includes both liquid waste that emerges from a single source such as industrial wastes being pumped out through pipes and liquid waste that has no single source such as run-off caused by rainfall. Other common examples of liquid waste include both human and animal excreta plus household wastewater coming from bathing, dishwashing, and a range of other domestic activities.

Liquid waste can be removed by:

  • -Containment: In this case, the waste is stored either in barrels or tanks that can be picked up by waste management services
  • -Treatment: In this case the liquids are treated before disposal. The treatment technology adopted depends upon the composition of the liquid waste. Organic wastes are composted whereas non-hazardous liquid wastes have their water content extracted.
  • -Disposal: The liquid wastes after treatment are either dumped in landfills, incinerated or converted into new products that can be reused.

14 comments:

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  3. To save our environment liquid waste management is very important because the hazardous chemical included into water for industrial process can seriously damage our environment. The latest advancement in technology has made the process easier. There are multiple measuring and controlling equipment like High Level Sensor ,Chemical Level Switch, Plastic Level Switches and Liquid Level Switches to help in a control industrial process that ultimately result in less polluted environment.



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  7. Now a days many Indian industries are getting issues due to lack of skill of the management as well as resource skill. each and every engineers or each and every managers should learn everyday something new so that skill will be develop but in India thing very different if , person got job he will work routine job every day and he will not learn anything.

    If you compare japan and american country everyday they do something and they are innovative. if you see our history also our legends also not at all innovative , if we are innovating before British attack to Indian we should have good weapon than British weapons.

    Like same indian industries also like this only , you just see in the world for the IT industry , why only america doing startup why not other country apple , Facebook , twitter , Microsoft , google ect... no one can overtake that company because we are depends on those facility, these called continues improvement.

    Let's pledge today if working any company be innovative and do some value added work every day so that , India and Indian industries became mature and they can give computation to international companies .

    There very few companies are recognized internationally like Tata , wipro , Quest Ect. apart from that no companies are not giving computation internationally.

    Why some Indian companies are in Top level

    There is reason behind , i will tell why . if your working in MNC company you may heard bench mark work , what is the bench mark. if you maintaining all the process in standard level and your business partners are happy with your facility and so that your company impression will good and became bench marking company.

    What are standard things required became bench marking company?

    If your company want to became bench marking company, they must adapt Lean manufacturing Technics , 5S , visual factory management should be exist if these are well maintain in industry so that automatically company became bench mark.


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