bwssb: world water day 2017
TRANSCRIPT
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WaterWASTE WATER AS A RESOURCE
Rebuilding a water culture
Shubha RamachandranBiome Environmental Trust
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Nature Based STPs
● Phytorid/DEWATS : anaerobic baffle reactor + planted gravel filter + polishing pond
● SBT : Soil Bio Technology
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DEWATS AT HOME LEVEL
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Waste Water Treatment
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The product
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Ravi Iyer
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Home near Agara Lake – Waste Water Reuse
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Phytorid
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Delhi Jal Board/CSE
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SBT : Herohalli, Magadi Road
● 25 acres● 1.5 MLD STP● Sewage mining● SBT● Issues with
electricity and dyes in inlets
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SBT: Herohalli, Magadi Road
SEWAGE MINING
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Herohalli, Magadi Road
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REUSE FOR FLUSHING/GARDENING
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REUSE FOR CONSTRUCTION
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DISCHARGE INTO LAKES
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Jakkur Lake
● 10 MLD design● 8.45 MLD inflow
from Yelahanka and Jakkur
● UASB, EAR● WETLAND● STP open for
viewing
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Design Parameters
The plant is designed for the following influent characteristics of wastewater.pH 7.06 – 8.1Total Solids 782-1352 mg/lTSS 320-672 mg/lBOD5, 20°C 290-369 mg/lCOD 465-973 mg/lChlorides (as Cl) 74-151 mg/lSulphates (as SO4) 11-41 mg/l
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Design Parameters
The plant is designed for the following characteristics of treated water.BOD5 ≤ 20 mg/lSuspended solids ≤ 30 mg/lpH 5.5 – 9Oil & Grease ≤ 10 mg/lResidual Chlorine ≤ 1 mg/lColour & Odour See NoteIron(as Fe) 3 mg/LNitrate Nitrogen 10 mg/LNote: all efforts are to be made to remove colour and odour as far as practicable
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Treatment Plant and Jakkur Lake
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Treated Wastewater entering the wet Land System of Jakkur Lake
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Nature as further treatment
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Lake ecosystem
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Fisheries
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Sludge as Compost
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Groundwater
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Community – Jala Poshan
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Puttenahalli
● 13 acres● 5-8 MLD from
private STP● Provision for
WETLAND● New Idea/Hope
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Puttenahalli
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Floating WETLAND
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Floating WETLAND
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Floating WETLAND
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Floating WETLAND
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The reuse of treated waste-water
• With a constructed wetland further polishing occurs
• Wetlands become bio-diversity spots
• Eco-system service functions of water fulfilled
• Groundwater recharge allowed
• Fisheries possible
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IRRIGATION IN COMMON AREAS
LOWER AMBALIPURA
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Kelagina Ambalipura
● 7 acre lake● Surrounded by 4
apartments● Treated water
from STP used for drip irrigation
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Kelagina Ambalipura
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100% REUSE - TZED
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● 95 flats and villas● Waste Water treated
to drinking water standards – and used for all purposes
● ASP + slow sand filter + RO
● 60KLD STP, 40KLD reused
● 1,00,000/- per month for running of STP
● FIRST and ONLY in INDIA
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Challenges and Way Forward
● ZLD doable ? - ● can excess treated waste water be used for discharge into lakes, shallow recharge
● If yes, what protocols for monitoring● Community monitoring/responsibility – including fisherman, grass cutters
● Low costs Sensors/meters to check for treated water quality at real time
● Maintenance Costs and Effort/Skill
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Biome Environmental Solutions Pvt LtdBIOME Environmental Trust
(Rainwater Club) www.biome-solutions.com
Www.rainwaterclub.org 1022, 1st floor, 6th Block,
HMT Layout, Vidyaranyapura, Bangalore – 560 097,
Phone : 080 41672790
THANK YOU !!