Power |
Requires constant aeration |
Limited to filtration |
Carbon footprint |
Air and noise pollution |
Least air/noise pollution |
Capital Investment |
Requires large capital |
Less than a third in capital |
Capacity utilization |
Cannot be upgraded to handle higher capacities |
Conventional plants can be upgraded with minor modification |
Plant Footprint |
Occupies large valuable space |
Less than half the space |
Odor |
Generally, disperses foul odour |
Minimal foul odour |
Retention |
12+ hours |
Less than one hour |
Sludge |
High volume |
Less than 3% in wet condition |
Bio–sludge |
Harmful effects on vegetation |
No side effects – no residue |
Treatment Guarantee |
Does not assure total treatment |
Reduce organics, in-organics and heavy metal contamination |
Disinfection |
Needs chlorination |
Non-toxic, no residue, no odour. |
Adaptability |
Single method of treatment |
Existing plants could easily be made to perform more proficiently without any modifications or investment |
Maintenance |
Requires constant maintenance of pumps, motors, electrical components, blowers, filtration media change, monitoring of MLSS/ AERATION |
Limited number of electromechanical components (/ Moving parts), thus low maintenance. |
Filtration system |
Bio-fouling / clogging |
No odour or clogging, doubles life of filtration media |
Side effects |
Sludge needs decomposition or incineration causing air pollution |
No pollution or side effects |
Temperature |
Sensitive, due to biological survival |
Works in any temperature |
Reuse applications |
Can only be used for landscape watering |
Could be used for vehicle washing, flushing, agriculture, lake/ pond fill |
Commercial returns |
Less demand due to unsure quality |
Could conform to discharge standards as defined by Regional Bodies |