Thursday, March 5, 2015

Visit to Cubbon Park Sewage treatment plant

On the day of 21st of February, Saturday sharp at 10 o'clock morning, the lake conscious team gathered at Cubbon Park with an agenda of more familiarity with Cubbon park Sewage Treatment Plant. The purpose is to evaluate the technology for its viability for sourcing  treated sewage water to the lake rejuvenation.

In a gist “The Cubbon park treatment plant is 1.5 MLD capacity using MBR (Membrane Bioreactor) coupled with aeration technology, setup in 2004/2005, at a cost of > Rs 4 Cr with a footprint of 0.8 acres on a 2 acres plot”. The idea was to tap 1.5 MLD sewage from neighboring drain and use the cleaned water for gardening purposes of the park. This was achieved by letting out clean water of < 2 BOD consistently. The plant spends Rs 2 lakhs per month on electricity. Simplified cost is Rs 12/- per KL. The STP is completely automated and most operations can be carried out from the office using SCADA systems, leaving human factors to 15 employees only. For 2004/2005 it was surely efficient enough, to see if this holds good in 2014/2015 let us see the operational details below:

Process:
Step 1: Sewage is let to flow from the drain to wet settler tank by screening through a 3 cm gap screen, To stop the bigger objects like blanket, utensils, dead animals etc.
DSC01958.JPG
Step 2: Four pumps are then engaged in pulling the water from the tank to two new chambers say ‘A’ and ‘B’. The total flow capacity of the 4 pumps is 55.25 cu.meter.
DSC01961.JPG
Step 3: Both chamber “A” and “B” has a 6 mm screen each to further filter out heavy particles before letting in a common chamber say “C”.

Step 4: From “C” then with the help of two pumps it again passed to two chambers say “D” and “E” having 0.8 mm filtration screen each.
DSC01966.JPG
Step 5: From “D” and “E” via a distribution channel it then passed in two big aeration tank say “M” and “N”. The depth of each of the tank is 4.29 meter. Air is passed into each of the tank from two air blowers. Here the aerobic digestion takes place. From this tank the final sludge is removed.
DSC01971.JPG

Step 6: Following that the treated water is passed through Chlorine bed for disinfection by passing jet of Sodium hypochlorite.

Step 7: Further it is made to pass through Activated carbon filter for odour removal and dechlorination. Because Chlorine is a toxic substance which makes it ideal for killing harmful pathogens, but it does not stop there. If chlorinated water were released into the garden it would also be harmful to soil,plants and any other living organisms it contacts.
DSC01973.JPG
Step 8: While the Treated water is stored in a tank for irrigation, The obtained sludge is removed and dried in sludge bed and generally used for landfilling.
DSC01977.JPG

Quality: less than 2 BOD but contains Nitrate and Phosphates which is not a threat in this case as it is considered that both will be absorbed by plant as nourishment.
DSC01974.JPG
Maintenance: Major action involves cleaning up the clogged membrane. It is achieved by backwash technique. Sodium hypochlorite and Citric Acid jet is used for this purpose.  
DSC01976.JPG

15 comments:

  1. That for such great piece of information. Cubbon Park in Bangalore, a lush green haven covering about 300 acres. Oak, cassia, gulmohar stand over grassy patches and walkways. Get to know more about Cubbon park.

    ReplyDelete
  2. Nice post on Cubbon park .Even the information about the Cubbon park timing , entry fee, location etc is very important .Its a nice place to spend quality time.

    ReplyDelete
  3. I think this article will fully complement you. Please continue publishing helpful topics like this. Regards, from
    Biogas - Green Connect


    Waste Water Treatment - Green Connect

    sewage Treatment Plant - Green Connect

    ReplyDelete
  4. GreenWaterScience offers advanced Sewage Treatment Plant Manufacturer in India which is used to treat a large amount of sewage effectively without using much power. We focus on conventional treatment plants as well as microbial treatment process that is eco-friendly and avoid the use of chemicals which in turn result in reduced sludge.

    ReplyDelete
  5. Very different and knowledgeable post. very informative, Thanks for the update. Outstation Cabs Online Booking

    ReplyDelete
  6. Nice Post!!
    Nice blog post, I got so many information from your blogs. If you searching best 2000 lph RO Plant with affordable rates then

    3000 lph ro plant
    500 lph ro plant
    500 lph ro plant price
    100 lph ro plant
    More info- http://www.wholesale-market-india.store/

    ReplyDelete
  7. Hello.Very informative blog on sewage treatment plant.Everyone need pure water.Nowadays.In many parts of the world, water is not safe enough to drink.So i would like to to prefer always best packaged water testing service in India.

    ReplyDelete
  8. Nice Article!!

    ATLAS is an ISO 9001:2015 Certified Testing Laboratory duly certified by International Council for Machinery Lubrication – ICML Certified Level II Machinery Lubricant Analyst MLA II 002616. We are a state-of-the-art laboratory carrying out various tests for Lubricating Oils and Petroleum products. Over the years ATLAS Labs has provided a reliable platform in the field of testing and today is in the position to provide its analysis services to large national and international clients on a global scale.

    ReplyDelete
  9. Thanks For Posting And Good Useful Information Call on Sewage Treatment Plant to get instant and reliable help regarding resolution.

    ReplyDelete
  10. From this website, you can get all the details and information about the Swimming pool filtration plants. This website will definitely help those who are planning to filter their swimming pool.

    ReplyDelete
  11. This website was recommended to me by a friend as I am looking for options to install the Wet scrubbers and I must say they are actually offering the best deals in town.

    ReplyDelete
  12. Wow it is really wonderful and awesome thus it is very much useful for me to understand many concepts and helped me a lot. it is really explainable very well and i got more information from your blog.

    Sewage Treatment Plant Manufacturer

    ETP Plant Supplier

    ReplyDelete
  13. Thanks for shared that blog with us. If anyone here searching New Sewage System Land Testing then visit Landcapabilityassessmentvictoria.

    ReplyDelete