Jakkur Lake
● 10 MLD design● 8.45 MLD inflow
from Yelahanka and Jakkur
● UASB, EAR● WETLAND● STP open for
viewing
Herohalli, Magadi Road
● 25 acres● 1.5 MLD STP● Sewage mining● SBT● Issues with
electricity and dyes in inlets
Lalbagh Lake
● 30 acres● 1.5MLD Tertiary
treatment● Water is first
used in the park, excess into the lake
Kelagina Ambalipura
● 7 acre lake● Surrounded by 4
apartments● Treated water
from STP used for drip irrigation
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
KEY Learnings from Rejuvenated lakes and STPs
● Diversion of sewage: Not necessarily a solution● Despite STP an Alternate sewage diversion channel is also required
● Water Inflows to a lake through an STP followed by a well sized WETLAND seems to enable the sustainability of the lake.
● Redirection of treated waste water from private and public STPs is worth exploring
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