Co-treatment at Aerated Lagoons based STP at Mangala Ghat, Puri

Scale of service	City  level	Area of installation	1950 m2
Inlet	Faecal sludge	Outlet	Supernatant from S-T tanks is taken to aerated lagoons for further treatment
Year of Installation	2016	Capital investment (INR)	1.76 crore
No. of Users/people affected	44,187	Designed capacity	25 KLD
Operation and Maintenance	16.9 lakhs/year	Construction and O&M responsibility	Orrisa Water Supply and Sewerage Board

Location of the technology:

Mangala ghat is a place in Puri on the banks of Dhaudia river. The geographical coordinates i.e. latitude and longitude of Mangala ghat is 19.8139° N, 85.8068° E respectively.

 

Need for technology

Faecal Sludge Management is in infant stage in Odissa. To fast track faecal sludge management along with sewage OWSSB has installed co-treatment unit at existing 15 MLD STP situated at Mangala ghat.

 

System description

 

 

• The plant has elevated unloading platform for trucks and tankers
• Faecal sludge is emptied into a sludge receiving box of 1 m x 1 m
• FS goes into an inlet channel which is 3m long
• Screen bar is placed in the channel at an angle of 45°
• From screens, influent goes to Setting-Thickening tanks of L x B x D = 7 m x 2.5 m x 2.55 m
• Thickened sludge is taken out of S-T tanks after a period of 10 days and the supernatant goes into existing aerated lagoons of the STP
• Thickened sludge is taken to existing sludge drying beds where they are kept till they are dried completely under direct sunlight
• The supernatant is then taken to existing aerated lagoons of the existing STP for further treatment

 

Screen and discharging point for trucks and tankers

Settling-thickening tanks of co-treatment unit

Inlet channel of the co-treatment unit