"Sludge dewatering is often ...
Published by Rola Hassoun, Environmental Engineer at CDM Smith
"Sludge dewatering is often performed applying continuous centrifugation. With a centrifuge, a final dry solids content of about 25% can be achieved. For sludge stabilization a poly‐ electrolyte consumption of about 10 kg per ton SS is required, whereas the energy consumption is about 100 kWh/ton SS. Centrifugation requires relatively high personnel attention" reference: https://courses.edx.org/c4x/DelftX/CTB3365STx/asset/W6c_SlidesTekst.pdf
Also see: EPA Electrical Power Consumption for Municipal Wastewater Treatment https://nepis.epa.gov/Exe/ZyNET.exe/9100TG7H.TXT?ZyActionD=ZyDocument&Client=EPA&Index=Prior+to+1976&Docs=&Query=&Time=&EndTime=&SearchMethod=1&TocRestrict=n&Toc=&TocEntry=&QField=&QFieldYear=&QFieldMonth=&QFieldDay=&IntQFieldOp=0&ExtQFieldOp=0&XmlQuery=&File=D%3A%5Czyfiles%5CIndex%20Data%5C70thru75%5CTxt%5C00000014%5C9100TG7H.txt&User=ANONYMOUS&Password=anonymous&SortMethod=h%7C-&MaximumDocuments=1&FuzzyDegree=0&ImageQuality=r75g8/r75g8/x150y150g16/i425&Display=hpfr&DefSeekPage=x&SearchBack=ZyActionL&Back=ZyActionS&BackDesc=Results%20page&MaximumPages=1&ZyEntry=1&SeekPage=x&ZyPURL
2 Comments
By the way, if anybody is wondering, These are the values I found:
Centrifuge presses - 0.92 kWh/kg, referred to the mass of treated sludge
Belt presses - 0.08 kWh/kg, referred to the mass of treated sludge.
Hit me up for any information you may want to ask for
Published by Marco Salmistraro, Environmental Engineer at International Water Association
Thanks! That's exactly the kind of information I was looking for. I eventually decided to take some values from commercial flyers displaying different dewatering units. Then I've interpolated the data, looking for a certain correlation between treated flux and energy consumption
Published by Marco Salmistraro, Environmental Engineer at International Water Association