Sewage Treatment Plant #2 (STP-2) is the biggest sewage treatment plant in Laughing Waters, sized to treat 40,000 liters and day and use it for various purposes. And to use the STP space for activities too.

Narrative

The design of STP-2 was approved at the time of STP-1. Problems with STP-1 delayed the entire project and increased costs put the entire project on hold. Fundraising carried out in Sep 08 and the appointment of a new sub-committee has put project back on track.

The plant is anaerobic using no energy.

Now it has become an aggressive experiment in urban sewage treatment and reuse. The plans are to treat and reuse all the water (> 20,000 liters a day).

And more ambitious plans are to use the STP space for community activities.

Sewage Treatment Plant Data

No specific STP design or operating data
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    Dr. Surendra Kulkarni ( Lake Shore Homes ) Over 6 Years after completion 15 Sep, 2015

    Visit by Dr. Surendra Kulkarni of Lake Shore Homes

    Status: Complete - Successful

    Operating Status:

    I visited the LW STPs with Rajesh and on 10th main outside the STP where treated water was being let out into the internal storm water drain we noticed a foul odour. It seemed to be getting some aeration as it went down the storm water drain - smelling strongly near the main road and less near the STP (5th cross).

    We noticed that the waste water was going straight down the borewell due to a hole in the borewell chamber next to the storm water drain. The estate manager was called immediately and promised he would plug the hole.

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    PA Chairman ( KSPCB ) About 5 Years after completion 30 May, 2014

    Visit by KSPCB Chairman

    Status: Complete - Successful

    Operating Status:

    Chairman of the Karnataka State Pollution Control Board (KSPCB) Dr. Vaman Acharya and his team visited the Laughing Waters STP's among other sites in Whitefield at the invitation of Rajesh Shah.

    Of interest was also the solid waste segregation and processing plant co-located with the STP.

    Rajesh Patil
    PA to Chairman

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    Regional Officer ( KSPCB ) Almost 5 Years after completion 14 Mar, 2014

    Visit by PCB SEOs

    Status: Complete - Successful

    Operating Status:

    At the invitation of Rajesh Shah, we visited STPs in Whitefield, including all the STPs in Laughing Waters.

    We took a water sample to test at our lab.

    M. G. Yatish and D. Shanmukappa
    KSPCB Senior Environmental Officers

    Rajesh Shah ( Peer Water Exchange ) About 1 Year after completion 24 May, 2010

    STP in unhealthy shape

    Status: Complete - Successful

    Operating Status:

    Spent 2 hours in the hot, really hot, sun with Paradigm (Iqbal and Justice) at STP-2, STP-4, park, ...

    In retrospect i got yelled at for the completely lousy state they are in, the lack of operation, the breakdown, ....

    STP2 is somewhat functional
    - motor not connected at the time
    - site not clean, mud is higher than inlet
    - grate not clean (need to clean every 2 weeks)
    - one outlet cover has been removed and replaced with roofing
    - inlet is not water tight

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    Rajesh Shah ( Blue Planet Network ) 11 Months after completion 6 Mar, 2010

    Water quality test

    Status: Complete - Successful

    Operating Status:

    Test was conducted for all 3 STPs.
    Result for this STP attached.

    • Thumb_stp2_quality_2010mar06
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    Rajesh Shah ( Blue Planet Network ) 9 Months after completion 22 Dec, 2009

    Water quality test

    Status: Complete - Successful

    Operating Status:

    As part of the completion of the STP, a water quality test was conducted.
    Result attached.

    • Thumb_stp2_quality_2009dec22
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    Rajesh Shah ( Blue Planet Network ) 8 Months after completion 24 Nov, 2009

    Treated water arrives!

    Status: Complete - Successful

    Operating Status:

    The good news of the day was that finally the STP-2 treated water made it to the park. The old septic tanks at STP-2 were cleaned up and being filled for the past 10 days. The old septic tanks at the park (designated as the site for STP-3 which was scrapped) were emptied and cleaned. Dhaval and Rajesh were definitely happy as the water gushed into the park tank.

    Now the final chapter is to create the drip irrigation system and use our treated water to green our park and reduce borewell water use.

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    Rajesh Shah ( Blue Planet Network ) 22 Days after completion 26 Apr, 2009

    Explanation of delay and path going forward

    Status: In-progress

    Operating Status:

    While there has been a delay in the STP2 project due to various reasons, we have done our best to get it on track and completed in a timely fashion. About two weeks back, we had a brainstorming session at the site with consultant and contractor with the objective of exploring further optimization of the design keeping in mind current site information available, future requirements like swimming pool and learnings from STP1 regarding reuse of treated water. The Consultant provided the final design inputs for the completion of the project by incorporating some modifications. The following is the summary of the key takeaways

    1. With the design changes we got an additional 0.6 m height for the treated water outlet from the final STP stage (stage 3). This has resulted in significant benefits such as
    a. The outlet level (of treated water) is higher than the outside storm water drain level. As a result, we ARE NOT dependent on pumping the water continuously unlike STP1 for discharge of treated water and hence backflow will not happen.
    b. This also gives about 30% more storage capacity for treated water at STP 2 itself as we have decided to convert the existing septic tank to storage tank. However, we will have to recast the roof slab of the storage tank.
    2. The slab size of the STP2 was redesigned to accommodate the possibility of future structure (such as swimming pool) on top of the parts of STP (Settler and one-fourth of the remaining structure). This was essential to be done for any future plans for the site.

    The resultant outcomes of the new design approach are:
    · A delayed schedule (we also recognize that the consultant/contractor team has used this as an excuse for covering up some of delay from their side, but our view is that a better design is a preferred outcome) – new completion date is May 15.
    · A revised project cost due to some increase in scope (Rs. 38.5 L for construction) – details given below.

    Project cost will change from original Rs. 37 L due to one subtraction and some additions as shown below. We save about 1.5 L due to elimination of the STP3, but we will pay 3 L extra for items that were not in the original scope (1 L for the storage tank slab and 2 L for the strengthening of part of the roof structure for holding future swimming pool. This cost cannot be deferred). In addition, the consultant fee is revised up from Rs. 30 K to Rs. 75 K to factor in all the spec changes.

    We had a tough time in negotiating with the contractor to keep the cost down and explored all positive logics. We finally struck the deal for a lower cost with aggressive payment terms. We will pay the remaining amount in 2 instalments of 50% each with the first one on the date of laying the roof slab for STP 2 (scheduled on May 2nd) and remaining on the completion of project (in all respects including piping etc). In case, STP does not become operational by May 15 for reasons under contractors control, we will deduct Rs 50000 flat towards penalty (which is much severe than Rs 1000 per day. Hence, we decided to waive off the earlier penalty keeping in mind the ultimate goal of having STP operational)

    However, to make this agreement work, we have to provide the remaining payments in a timely and efficient manner to prevent any scope of further delay and arguments (We do not want the contractor to come back and say that delay is due to non-payment). The agreement with the contractor is that he will be paid one instalment (about Rs. 6.6 L as shown below) on May 2nd (when he should be ready to cast the slabs) and the final payment on completion (earliest May 16). Please treat this as advance information for timely processing of payment and will be submitting the detailed payment note in the prescribed format in due course.

    Original contract cost 37,00,000.00 Final Project Cost 38,50,000.00
    STP3 reduction (1,80,000.00) Retention amount 1,92,500.00
    Relaying of pipes 30,000.00 Payable 36,57,500.00
    Storage tank slab work 1,00,000.00 First payment 8,98,464.70
    Slab strengthening for future 2,00,000.00 Second payment 5,37,283.15
    Contractor final cost 38,50,000.00 Advance 9,00,000.00
    Remaining payable 13,21,752.15
    Consultant visit budget 30,000.00 First instalment (May2) 6,60,876.08
    Consultant additonal charge 45,000.00 Final instalment (May16) 6,60,876.08
    Consultant final cost 75,000.00 Retention (Aug 15) 1,92,500.00
    Total project cost 39,25,000.00

    We appreciate your support through this arduous project and anticipate continued cooperation till the finish. We appreciate the help provided by Tharun in the final stages as a facilitator.

    Thanks and regards,


    STP Sub-committee

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    Rajesh Shah ( Blue Planet Network ) 4 Days after completion 8 Apr, 2009

    Drawings received

    Status: In-progress

    Operating Status:

    Paradigm under Iqbal's supervision has taken detailed measurements of the site and come up with detailed drawings.

    Of course, no changes can be made to the structure which is already completed, but it does provide info on all the internal piping.

    Some of these are laid out and will need to be changed.

  • Impact Assessment (M&E) Phase Project completed on 4 Apr, 2009 Implementation Phase
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    Rajesh Shah ( Blue Planet Network ) 7 Months after start 24 Mar, 2009

    Ambitious pool and club house plan

    Status: In-progress

    Operating Status:

    With the lack of a place for a clubhouse, Rajesh has proposed a revolutionary idea to build a swimming pool and a club house on top of the STP. Incredulous and resistance and emotions are par for the course for his ideas.

    However, the first step is to design in the possibility that it could happen. To do that the openings of the STP have to be moved around so that there is space. And that the roof of the STP is strengthened with structural engineering input to support the future load. The attached drawing will help garner input.

    It is hard to find structural engineers in Bangalore! We have connected with Mahimtura and Sons, a civil engineering firm in Mumbai.

    • Thumb_lw_stp2
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    Rajesh Shah ( Blue Planet Network ) 3 Months after start 25 Nov, 2008

    Project started!

    Status: In-progress

    Operating Status:

    Digging work has started in full swing.

    In the absence of civil drawings, the contractor sketched out the plan on a rough piece of paper showing the outline and approximate dimensions.

    • Thumb_stp2_sketch
  • Implementation Phase Project started on 4 Sep, 2008 Preparation Phase

Sewage Treatment Plant #2 (STP-2) is the biggest sewage treatment plant in Laughing Waters, sized to treat 40,000 liters and day and use it for various purposes. And to use the STP space for activities too.

Narrative

The design of STP-2 was approved at the time of STP-1. Problems with STP-1 delayed the entire project and increased costs put the entire project on hold. Fundraising carried out in Sep 08 and the appointment of a new sub-committee has put project back on track.

The plant is anaerobic using no energy.

Now it has become an aggressive experiment in urban sewage treatment and reuse. The plans are to treat and reuse all the water (> 20,000 liters a day).

And more ambitious plans are to use the STP space for community activities.

Impact

Funding

Final Cost:
$90,000

Plan/Proposal