Kathryn Eklund  Based on ...

Published by

Kathryn Eklund 

Based on over 40 years worldwide expertise, I would recommend following key technology upgrades aside from VSD's as to save save energy and reduce GHG emissions in biological STP/WWTP's:

1. apply high-rate anaerobic digestion (HRAD) on medium to high strength organic wastewaters as to convert organics (COD, BOD) to methane (CH4) replacing fossil fuel for heat and power generation.

2. aerobic treatment - aeration system: using ultrafine bubble diffusers combined with horizontal liquid flow we achieved over 4 kgO2/kWh SOTE which is up to 3 times more efficient as compared to conventional aeration.

3. aerobic treatment - biological nitrogen removal: using short-cut partial (50%) nitritation (NH4+ > NO2-) along with anammox (NH4+ + NO2- > N2-gas) we saved over 50% energy as compared to the usual nitrification-dentrification via full oxidation to nitrate NO3-

4. advanced multi-parameter process controls instead of the usual dissolved oxygen (DO) control.

If interested, I would be happy to send you more info via email.

Regards,

Bruno

1 Comment

@ Kathryn : The simple answer to reduce the energy consumption and GHG emissions is to apply green technologies such as constructed wetlands, soil bio technology or Eco-biopack

etc. as they don't use blowers. Hence, would urge you to study the current energy consumption and accordingly you may think of choosing a retrofit or change the system to be energy efficient.

I have worked on green technologies for wastewater treatment. Should you require any help you may contact me at msrikan@gmail.com

Published by

Permalink