Purpose– Grey water treatment with the help of Algae Photo bioreactor.
Material used –
- Acrylic tube of Dia. 75 mm with 4mm thickness.
- Pipe fittings.
- Storage tank of 50 Ltrs. for grey water.
- Submersible Pump – Power-12W, Head- 1.6 Meter, O/P-900 L/H.
- PVC pipe.
- Blue LED of 10 Mtr. length.
Working of System:-
An alga is placed into photo bioreactor and grey water is passed through it. Due to light provided to algae, photosynthesis will happen and it will release Oxygen into water. And the result would be increase in Dissolve Oxygen.
Results of first trial:-
Initial DO readings before running system-
- 30/10/2017- 8:30 AM- 0.00 ppm (8:30 AM starting time of system.)
Readings after running system-
First trial ends on October 31, 2017 at 2:20 PM
Treated grey water sample-
DO= 2.01 ppm
On November 1, 2017
DO= 2.79 ppm
Water temperature – 24.4°C.
As per calculations 9 rupees required to treat 40 ltrs of grey water.
Starts on 3/11/2017
Readings before trial-
COD= 255 ppm
Readings after 24 hrs-
DO= 1.23 ppm
Readings after 48 hrs-
DO= 1.32 ppm.
COD= 224.4 ppm
After second trial condition of scrubber:-
It is observed that scrubbers are not holding algae properly.
So after second trial some modifications in photo bioreactor are done.
New scrubbers and acrylic discs are added to plunger. Also nylon filters are introduced to hold algae properly.
Next trial is going on……