Dear Valerie Issumo Very ...

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Dear Valerie Issumo Very ...

Dear Valerie Issumo Very ...

Dear Valerie Issumo Very ...

Dear Valerie Issumo Very ...

Dear Valerie Issumo Very ...

Dear Valerie Issumo 

Very interesting question

  1. The anaerobic digestion produced large mass of bio gas which is also used as power generation.
  2. The bio fuel produced during anaerobic digestion of the waste are also used as an energy saving.

 

  1. Sludge digested through anaerobic and anaerobic processes have distinctly different characteristics and opportunities for resource recovery are specific to each process.
  2.  Mass balances for nitrogen in the anaerobic digestion process show a high concentration of dissolved ammonia. The feasibility of struvite precipitation by addition of phosphate and magnesium compounds is evaluated through batch reaction using anaerobic sludge filtrate.
  3. Aerobic sludge contains most of the nutrient resources in the solid phase, ready for recovery if handled properly. Phosphorus release is a potential concern and specific phosphorus release rates are evaluated for a municipal scale aerobic digester.
  4. Co-digestion with other organic waste streams can improve this recovery, as well as increase biogas generation, coupled with the implementation of some really smart established thermal hydrolysis type of pre-digestion will probably give the best result.
  5. Wastewater which contains a high amount of phosphorus and nitrogen would be a good source of struvite.  Struvite is a phosphate fertilizer, although it contains a significant amount of nitrogen and magnesium, and it is an effective alternative source of rock phosphate to maintain the agricultural production system
  6. Production of slow release crystal fertilizer from wastewaters through struvite crystallization.
  7. Urine in the ecosystem causes  eutrophication  or algae blooms, which suffocates fish and kills aquatic ecosystems.  Urine  is so effective at helping algae grow because it is rich in  nitrogen potassium , and  phosphorus ; these are the three main ingredients found in commercially produced  fertilisers Struvite  produced from  urine  can be applied to fields just like any other  fertiliser . In a simple granulation drum, the powder can be transformed into granules. In granular form, a  fertiliser  is easier to apply and does not cake in moist environments.  Struvite  performs comparably to  diammonium phosphate  ( DAP fertiliser .

 

 

1 Comment

Good day, thank you Prem. Technologies and markets for energy, fertilisers, sand...etc... from wastewater exist so poor populations should be able to benefit the return of their own waste.  Those technologies should increase the return on investment for the wastewater transformation but I am interested to understand your views/experiences about the reasons why there is not more sanitation put in place and disadvantaged population not enabled to benefit the return of their own resources?

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