Hi lyseconcept, Maybe initially it could sound contradictory,but I will try to answer your question in my best effort, “How can we increase on one side the presence aerobic bacterial, in an effluent when on the other side we will create an environment without oxygen: it is contradictory?” You can treat the wastewater in a first anaerobic step to produce the acid fermentation products, or even to reach the biogas yield, and at the second step you can treat the remaining organics in that wastewater in an aerobic system (if it is necessary) to reach the regulation law parameters required. Thinking in that way, you could use the pipes as a kind of bioaugmented anaerobic system to reach the fermentation products and feed it to an anaerobic system obtaining the biogas to use as energy source. After that you can treat it in an aerobic system saving area and aeration energy costs. Other example is that you use a direct filtration system at inlet separating the solids and sending them to a small anaerobic digester obtaining the biogas to use as energy source. The filtered wastewater with less organics contaminants can be send to the actual plant and treated using less aeration energy. Other ideas are that they use other simple technologies as anaerobic covered lagoons, facultative lagoon wetlands that could use more area, or even some other more complex automated systems that have tiny equilibrium and must be operated by high skilled people or that will need remote control. Regards, Orlando D. Gutiérrez Coronado
Published by Orlando D. Gutiérrez Coronado
Hi lyseconcept,
Maybe initially it could sound contradictory,but I will try to answer your question in my best effort,
“How can we increase on one side the presence aerobic bacterial, in an effluent when on the other side we will create an environment without oxygen: it is contradictory?”
You can treat the wastewater in a first anaerobic step to produce the acid fermentation products, or even to reach the biogas yield, and at the second step you can treat the remaining organics in that wastewater in an aerobic system (if it is necessary) to reach the regulation law parameters required.
Thinking in that way, you could use the pipes as a kind of bioaugmented anaerobic system to reach the fermentation products and feed it to an anaerobic system obtaining the biogas to use as energy source. After that you can treat it in an aerobic system saving area and aeration energy costs.
Other example is that you use a direct filtration system at inlet separating the solids and sending them to a small anaerobic digester obtaining the biogas to use as energy source. The filtered wastewater with less organics contaminants can be send to the actual plant and treated using less aeration energy.
Other ideas are that they use other simple technologies as anaerobic covered lagoons, facultative lagoon wetlands that could use more area, or even some other more complex automated systems that have tiny equilibrium and must be operated by high skilled people or that will need remote control.
Regards,
Orlando D. Gutiérrez Coronado