Pilot Testing of Bioremediation as an Alternative Treatment Technology for Municipal Wastewaters
Pilot Testing of Bioremediation as an Alternative Treatment Technology for Municipal Wastewaters Dr Anjana Pant WWF India, WWF India Forestry Symposium 2011
Structure of the PresentationIntroductionStudy AreaObjectivesMethodologyAnalysis and ResultsWay Forward
IntroductionWastewater (Ganga Basin) – some facts• Of the Total wastewater generated, 75% is Municipal sewage (NRCD 2006)• Of this municipal sewage, only 65% gets treated (NRCD, 2006)• Priority and focus has been on GAP towns only (due to financial limitations)
Wastewater treatment using Decentralized Options• Site specific: Understanding what the site allows can be economic and environment friendly• Very Low Infrastructure costs and low O&M costs• Provides opportunity to reuse treated wastewater• Energy Efficient: A forward looking plan for an energy scarce future Bioremediation is the use of living organisms, primarily microorganisms, to degrade the environmental contaminants into less toxic forms.
Factors governing BioremediationExistence of desired microbial population capable of degrading the pollutants;Availability of contaminants to the microbial population;Environment factors (temperature, pH, and Nutrients).
Study Area Key Sites River Ganga Basin Location of Target Areas for Intervention Narora Kanpur Cities Agriculture Industry ( Paper & Pulp, Sugar & Distillery, Tanneries)
D ZOO LAKE C B BAR SCREEN PUMPING STATION FOREST RESEARCH INSTITUTE, KANPURSHARDA NAGAR DRAIN VIKAS NAGAR DRAIN A
Objectives• To treat the wastewater on channel using ‘Bioremediation’ to improve its water quality to prescribed discharge standard of inland surface water by the Ministry of Environment and Forests or better, on a pilot basis.2. To reduce/eliminate the threat to the health of Kanpur Zoo animals due to the entry of sewage into the Zoo lake through the drain.3. To ensure an odorless atmosphere, devoid of microbial pathogens, to the inhabitants surrounding the drains and thus make the place more habitable.4. Demonstrate ‘Bioremediation’ as an alternative low cost sewage treatment technology which is energy efficient..
Stakeholder ParticipationMethodology Kanpur Nagar Nigam Local NGOs CPCB UPPCB NGRBA Kanpur Zoo UP Jal Nigam IIT-K WWF India Technology partner MediaA stakeholder group consisting of the Kanpur Zoo, Urban Local Body ofKanpur, Jal Nigam, Local Communities and Media was constituted
Point A – Inlet point Point B – Mid-pointPoint C – Outlet point Point D – The Zoo Lake (sink)
Point D Sink or the Zoo Lake BIOREMEDIATION: EXPERIENCES IN THE ZOO DRAIN Point B Pumping station ZOO LAKE BAR SCREEN PUMPING Point A STATION Point C Forest Research FOREST RESEARCH Before waterInstitute entrance INSTITUTE,KANPUR enters the zoo lake SHARDA NAGAR DRAIN
Analysis and Results Average Reduction in TSS TSS Std 250 Suspended Solids Reduction 200 150 m S L g T ) ( / 100 50 0 Inlet Mid-point Outlet Lake Point A Point B Point C Point D Points along the drain
Average reduction in BOD140 BOD Reduction120100 80 BO D Stdm 60ODBLg)(/ 40 20 0 Inlet mid-point Outlet Lake Point A Point B Point C Point D Points along the drain
Reduction in Faecal Coliform9.0 x 108 Faecal Coliform Reduction8.0 x 1087.0 x 108 Inlet6.0 x 1085.0 x 108 Std Outlet4.0 x 1083.0 x 1082.0 x 1081.0 x 108 0 Wk 1 Wk 2 Time
S. N. Cost Head Capital cost Recurring Remarks cost (PA)1 Zoo Pumping 42.00 16.00 Source of Data - Project Manager, E & station M Sewerage Division, Rakhimandi, Kanpur, UP Jal Nigam2 Water for the 1.08 Jal Kal Vibhag, Kanpur (9000 per Zoo lake month)3 Environmental During times of (a) power cut, (b) breakdown of either/both of the costs pumps, the wastewater continues to enter the lake and pollute it. Even during times it was being pumped to another drain it was (a) polluting the other drain and also the Ganga river (b) lake received no water and hence became dry. The Kanpur Zoo had to buy water from the barrage to fill the lake which also included pumping costs.4 Bioremediation NA 39.50 Pilot Experiences