ðYesterday, ððē ð ðŪðŋð°ðĩ ðŪðŽðŪðŊð the ð§âŧðððð ðððĨðĒ ðŠððĶð§ð ðŠðð§ððĨâŧð§ consortium met again at ððĩðē ðĐðŪðđðąðēðŊðēðŊðŪð ðŠðŠð§ðĢ (ð ðŪðąðŋðķðą) for the ð ð-ð ðŊðŽ ððēð°ðĩðŧðķð°ðŪðđ ðšðēðēððķðŧðī.
ðð ðģðžðđðđðžð-ðð― ðžðģ ððĩðē ðąðēððēðđðžð―ðšðēðŧð ðžðģ ððĩðē ððēð°ðĩðŧðķð°ðŪðđ ðŪðŧðą ðēð°ðžðŧðžðšðķð° ð―ðŪðŋð ðžðģ ððĩðē ð―ðŋðžð·ðēð°ð ððŪð ð°ðŪðŋðŋðķðēðą ðžððð and later ð ððĩðē ðąðēðšðž ððķððēð was visited.
We continue to work together to meet the milestones set in the project!ðð
ðððŪðð ð§ðĩððŋððąðŪð ðŪððð ðððđðð, ð―ðð ðĒĖð ðīĖðððð ðŋðĖððð§ ðšðĖððð§ and ðļðððð ðð ðð ððð§ ðķðððð , specialised technicians from ðð ðŪðąðŋðķðą ððķðð ððžððŧð°ðķðđð, came to âŧðĐðŪðđðąðēðŊðēðŊðŪð ðŠðŠð§ðĢâŧ to know our project and visit the ðąðēðšðž ððķððē. This time, the ð§ðððð ðððĨðĒ ðŠððĶð§ð ðŠðð§ððĨð§ project consortium was represented by: Jose Ramon Vazquez Padin, Ana Vicente Borreguero, Marta Casao, MarÃa del Pilar MartÃn Espada and Ana Escribano SÃĄnchez on behalf of Aqualia; Jaime Flores Cabeza and JosÃĐ Antonio Moraleda Mesa on behalf of Canal de Isabel II; and Sergio MartÃnez Parada on behalf of the Universidade de Santiago de Compostela.Â
We would like to thank the technicians of the Madrid City Council for their visit.Â
ðLast Tuesday 17th Mayð we participated in a roundtable organised by DAKE Culto a la Cocina / PaixÃĢo pela Cozinha in ðððĶð ððððĒðĨ where one of our partners could talk about our project ðððð ðððĨðĒ ðŠððĶð§ð ðŠðð§ððĨ and how some new elements of the kitchen could play an important role in the management of bio-waste at home and in the search for energy efficiency.
A follow-up of the ðąðēððēðđðžð―ðšðēðŧð ðžðģ ððĩðē ððēð°ðĩðŧðķð°ðŪðđ ðŪðŧðą ðēð°ðžðŧðžðšðķð° ð―ðŪðŋð ðžðģ ððĩðē ð―ðŋðžð·ðēð°ð was carried out and later ððĩðē ðąðēðšðž ððķððē located in the WWTP was visited. Only a few electrical details are missing, but…ððēðŋð ððžðžðŧ ððē ððķðđðđ ðŊðē ðŪðŊðđðē ððž ððēðē ðķð ðķðŧ ðžð―ðēðŋðŪððķðžðŧ!
We are very happy to finally be able to meet face-to-face and share experiences and knowledge
Next Thursday 7th April will be held this online webinar entitled âCircular solutions for waste and wastewater managementâ, from 10:00 a.m. to 1:00 p.m.
They will start with the presentation of these 4 innovation projects co-financed by the LIFE Programme: LIFE BIOGASNET, LIFE EcodigestiÃģn 2, Life Infusion and ðâŧð§LIFE ZERO WASTE WATERð§âŧ.
You can download the ðagenda of the eventð in the comments sectionðŽ.
The “John” Coliminder system from VWMs GmbH has just been installed in Madrid as part of the innovative LIFE ZERO WASTE WATER project to monitor E.Coli contamination levels.
ðĒðĒATTENTIONðĒðĒðĒ
In the ðŋð§LIFE ZERO WASTE WATER projectð§ðŋ, we have carried out a ðsurvey addressed to citizensð to find out how they manage organic waste in their homes and if they know alternatives to putting it in the rubbish bin, such as mixing this part of the waste with wastewater through grinders. I would be grateful if you could complete the survey. It should not take more than 4-5 min. THANK YOU!ððž
A two-stage system (partial nitritation (PN) and anammox processes) was used to remove nitrogen from the dewatering liquor originating from the thermal hydrolysis/anaerobic digestion (THP/AD) of municipal WWTP sludge. Two strategies were tested to start up the PN reactor: 1) maintaining a fixed hydraulic retention time (HRT) and increasing the ammonium loading rate (ALR) by decreasing the feeding dilution ratio and 2) feeding undiluted dewatering liquor and gradually decreasing the HRT. With diluted feeding, the reactor performance had destabilization episodes that were statistically correlated with the application of high specific ammonium (> 0.6 g NH4+-N/(g TSS·d)) and organic (> 0.7 g COD/(g TSS·d)) loading rates. The second strategy allowed stable PN reactor operation while treating ALR up to 4.8 g NH4+-N/(L·d) and demonstrating that dilution of THP/AD effluents is not required. The operating conditions promoted the presence of free nitrous acid levels (> 0.14 mg HNO2-N/L) inside the PN reactor that inhibited the proliferation of nitrite oxidizing bacteria.
Batch activity tests showed that the inhibitory effects of organic compounds present in the THP/AD dewatering liquor on the ammonia oxidizing bacteria activity can be removed in the PN reactor. Thus, aerobic pretreatment would not be necessary when two-stage systems are used. The PN reactor effluent was successfully treated by an anammox reactor.
An economic analysis showed that using two-stage systems is advantageous for treating THP/AD dewatering liquor. The implementation of an aerobic pre-treatment unit is recommended for WWTPs capacities higher than 5·105 inhabitants equivalent when one-stage systems are used.
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