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Constructed Wetland

by Anjila Pandey | 31-03-2020 17:49 recommendations 0

Firstly, Waste water management  is a process used to convert

wastewater into an effluent, that can be returned to water-cycle

with minimal impact on the environment.


Constructed Wetlands (CW) are artificial wastewater 

which have been planted with aquatic plants and which depends upon natural microbial, biological, physical and chemical processes to treat waste-water. 


CW is also known as Reed beds, soil infiltration beds, engineered

wetlands. CW is for the treatment  of municipal or industrial wastewater, grey water or storm-water  runoff.


Constructed Wetlands in Nepal


     Environment and public health organization (ENPHO), a national non-governmental organization, has introduced  first CW as  low cost and effective  option for wastewater treatment and recycling in 1997.The  1st CW was built at Dhulikhel Hospital under design and technical supervision of a Ph.D. scholar  from university of Agricultural Sciences, Vienna, Austria.This technology has been replicated at several places such as Lalitpur, Pokhara,Tansen and so on.


            How does wetland improve water quality?


  • Settling of suspended particular matter.

  • Filtration and chemical precipitation through contact of water with substrate.

  • Chemical transformation.

  • Adsorption and ion exchange on the surface of plants, substrate,

  •  sediment and litter.

  • Breakdown and transformation of pollutants by microorganisms

  • and plants.

  • Uptake and transformation of nutrients by microorganisms.

  • Predation and natural die-off of pathogens.

  • Less expensive to build than other treatment option.

  • Operation and maintenance expenses are low.( energy and 

  •  supplies)

  • Require only periodic, rather than continuous, on-site labor.

  • Able to tolerate fluctuations in flow.

  • Facilitate water reuse and recycle


To conclude, CW is one of the best practice for controlling urban runoff. Also, the use of constructed wetlands for wastewater treatment and storm water control is fairly a recent development. There is yet no consensus on the optimal design of wetland nor is there much information on their long-term performance.



References

www.enphonepal.com
wetland

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28 Comments

  • Anjila Pandey says :
    Yes, constructed wetlands have been valued and utilised well comparatively. Thankyou for the feedback, Sandesh.

    Regards,
    Anjila
    Posted 07-04-2020 13:48

  • sandesh thapa says :
    Hello Anjila,


    really constructed wetland are of great importance with a view of water re-use and recycle. Also these constructed wetland havebeen nowadays modified and made fit for agricultural use as a source of irrigation during dry periods.


    Thank You!!!!
    Posted 05-04-2020 20:13

  • Anjila Pandey says :
    Thankyou for the feedback,Anjana.
    Posted 01-04-2020 01:20

  • Anjila Pandey says :
    Thankyou for the feedback, Suraj.
    Posted 01-04-2020 01:20

  • Anjila Pandey says :
    Thankyou for the feedback, Mithila.
    Posted 01-04-2020 01:19

  • Anjana Paudel says :
    Informative, thanks for sharing
    Posted 31-03-2020 23:26

  • Anjila Pandey says :
    Thankyou for the feedback,Swesha.
    Posted 31-03-2020 23:17

  • Anjila Pandey says :
    Hello Soyam,

    Thankyou for your feedback. GREEN CHEERS!

    Regards,
    Anjila
    Posted 31-03-2020 23:17

  • Anjila Pandey says :
    Hello Sonika,

    I highly appreciate your feedback. Yes, it is.

    Best wishes,
    Anjila
    Posted 31-03-2020 23:16

  • Anjila Pandey says :
    Thankyou for the feedback,Swesha.
    GREEN CHEERS!
    Posted 31-03-2020 23:14

  • Anjila Pandey says :
    Thankyou for the feedback,Rachu.
    Posted 31-03-2020 23:14

  • Soyam Dhamala says :
    Nice report!!

    Keep writing.

    Yours,
    Soyam
    Posted 31-03-2020 23:13

Sonika Pariyar

  • Sonika Pariyar says :
    Hey Anjila!!

    I hope you are doing great!!

    This is informative one!!
    Constructed wetland helps to control water pollution!!

    GREEN CHEERS!!

    Yours,
    Sonika!!
    Posted 31-03-2020 22:53

  • Swesha Dhamala says :
    Constructed wetlands is also called reed beeds,

    Keep wriitng.

    Yours,
    Swesha
    Posted 31-03-2020 22:05

  • Rachu Khanal says :
    Thank you for the report
    Posted 31-03-2020 21:55

  • Anjila Pandey says :
    Thankyou for the feedback,Rijana.
    Posted 31-03-2020 21:30

  • Anjila Pandey says :
    You got it right,Ramesh .
    Posted 31-03-2020 21:05

  • Anjila Pandey says :
    Thankkyou for the feedback,Sushma.
    Posted 31-03-2020 21:05

  • Anjila Pandey says :
    Thankyou for the feedback,Ganga.
    Posted 31-03-2020 21:04

  • Anjila Pandey says :
    Yes. you are absolutely right,Apsara.
    Posted 31-03-2020 21:03

  • Sushma Sapkota says :
    Informative, thanks for sharing
    Posted 31-03-2020 18:57

  • Ramesh Oli says :
    It is best practice for controlling urban runoff.
    Posted 31-03-2020 18:47

  • Apsara Sapkota says :
    Yes it is best practice for controlling urban runoff.
    Posted 31-03-2020 18:11

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