bwssb: world water day 2017

WaterWASTE WATER AS A RESOURCE

Rebuilding a water culture

Shubha RamachandranBiome Environmental Trust

Nature Based STPs

● Phytorid/DEWATS : anaerobic baffle reactor + planted gravel filter + polishing pond

● SBT : Soil Bio Technology

DEWATS AT HOME LEVEL

Waste Water Treatment

The product

Ravi Iyer

Home near Agara Lake – Waste Water Reuse

Phytorid

Delhi Jal Board/CSE

SBT : Herohalli, Magadi Road

● 25 acres● 1.5 MLD STP● Sewage mining● SBT● Issues with

electricity and dyes in inlets

SBT: Herohalli, Magadi Road

SEWAGE MINING

Herohalli, Magadi Road

REUSE FOR FLUSHING/GARDENING

REUSE FOR CONSTRUCTION

DISCHARGE INTO LAKES

Jakkur Lake

● 10 MLD design● 8.45 MLD inflow

from Yelahanka and Jakkur

● UASB, EAR● WETLAND● STP open for

viewing

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

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

Treatment Plant and Jakkur Lake

Treated Wastewater entering the wet Land System of Jakkur Lake

Nature as further treatment

Lake ecosystem

Fisheries

Sludge as Compost

Groundwater

Community – Jala Poshan

Puttenahalli

● 13 acres● 5-8 MLD from

private STP● Provision for

WETLAND● New Idea/Hope

Puttenahalli

Floating WETLAND

Floating WETLAND

Floating WETLAND

Floating WETLAND

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

IRRIGATION IN COMMON AREAS

LOWER AMBALIPURA

Kelagina Ambalipura

● 7 acre lake● Surrounded by 4

apartments● Treated water

from STP used for drip irrigation

Kelagina Ambalipura

100% REUSE - TZED

● 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

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

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 !!