1,721,004 research outputs found
Upgrading di impianti pilota a fanghi attivi con processi a letto mobile: dallo studio pilota all'applicazione reale
No full textPiccoli impianti di depurazione: normative nazionali e regionali a confronto
No full textI piccoli impianti di depurazione sono soggetti a
una normativa nazionale che coesiste con molte norme regionali
basate su differenti criteri (numero di abitanti equivalenti,
corpo idrico ricettore, sensibilità ambientale delle zone,
altitudine, tipo di trattamento). Oggetto di questo lavoro è
porre a confronto tali criteri. Nell’evoluzione delle norme sui
piccoli impianti di depurazione si evidenzia la necessità di
tutelare efficacemente l’ambiente, e al contempo la necessità
di valutare realisticamente il “rapporto benefici/costi” di un
trattamento depurativo complesso applicato agli scarichi di
piccole comunità o edifici isolati
Upgrading of activated sludge wastewater treatment plants with hybrid moving bed biofilm reactors
No full textThis paper focuses on hybrid moving-bed biofilm reactors (MBBRs). For this research, we arranged a pilot-scale activated sludge plant with an anoxic tank (1 m(3)), an aerated tank (1 m(3)), and a settler (1 m(3)); it was fed with municipal wastewater (at a rate of 300 L/h). This plant removed only 11% of the NH4-N, so the aerated tank was divided into two reactors and polyethylene carriers were placed into each reactor. The upgraded plant removed 86% of the ammonium and 73% of the total nitrogen. The following step was a full-scale plant. A municipal activated sludge wastewater treatment plant, originally built for 3000 p.e., received a nitrogen load corresponding to 5800 p.e. (The term "p.e." represents the persons equivalent.) A sector of each aerated tank was transformed to a hybrid MBBR: the aeration equipment was changed and polyethylene carriers were placed in these sectors. With an incoming total Kjeldahl nitrogen (TKN) concentration of 79 mg/L, the outgoing NH4-N concentration was <1 mg/L
Rimozione di atrazina da acque destinate al consumo umano mediante trattamento con carboni attivi
No full text
Processi a letto mobile ibrido - Influenza dei parametri operativi sulle rese depurative
No full textSmall Urban Wastewater Treatment Plants: Centralization or Upgrading? Two Italian Cases of Study
No full textTreatment of stormwater with a new multi material cartridge filter
No full textThis paper deals with a new technology for stormwater treatment based on passive filtration in a multi material cartridge filte
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