The generation of odours in a WWTP is usually caused by the presence of hydrogen sulphide (H2S). This gas, moreover, is responsible for the deterioration of the facilities’ materials and involves a health hazard for plant operators. Currently there are several alternatives that allow decreasing the impact of odours associated with H2S.
This paper presents some techniques focused on management of odours in WWTPs as a result of the experience of DAM as WWTP Manager: experiences of removal of H2S in collectors, deodorization of a WWTP by the injection of confined air in the anoxic biological reactor of the sludge line, studies at pilot scale for the application of a TECNIUM’s biofilter percolator, a photo-ionization for the treatment of air streams, and ozone plus ultrasound for the treatment of liquid streams.
L. Sauco1, J.E Sánchez-Ramírez1 ,L. Pastor1, E. Morales1, S. Doñate1, L. Otegi2
1 Depuración de aguas del mediterráneo (DAM). Dpto I+D+i. Av Benjamín franklin 21- 46980 Valencia-España (Paterna). Tel: 902.881.510 – www.dam-aguas.es. Email: lidia.sauco@dam-aguas.es
2 Tecnium-Casals Cardona Ind. S.A.- Calle Ferrán Casablancas, 24. 08243 Manresa (Barcelona). Tel: 93.874.84.80 – www.tecnium.es. Email: tecnium@tecnium.es
The processing of meat by-products for the production of protein meals entails the generation of gaseous emissions causing annoying odours that cause a severe environmental impact in the surrounding populations.
The upgrading of biogas coupled with centrate treatment was evaluated in an outdoors photobioreactor interconnected to an absorption column of CO2 and H2S from September to December 2016.