Rainfall diminution in the last years has entailed water scarcity in plenty of European regions, especially in Mediterranean areas. As a consequence, regional water authorities have enhanced wastewater reclamation and reuse. Thus, the implementation of tertiary treatments has become of paramount importance in the municipal wastewater treatment plants (WWTP) of Valencian Region (Spain). Conventional tertiary treatments consist of a physico-chemical treatment of the secondary effluent followed by sand filtration and UV radiation. However, the addition of coagulants and flocculants sometimes does not contribute significantly in the final water quality. In this work, results of 20-months operation of three WWTP in Valencian Region with different tertiary treatments (two without chemicals addition and another with chemicals addition) are discussed. Besides, experiments with a 2 m3/h pilot plant located in the WWTP Quart-Benager in Valencia were performed in order to evaluate with the same secondary effluent the effect of the chemicals addition on the final water quality. Results showed that the addition of chemicals did not improve the final water quality significantly. These results were observed both comparing the three full scale plants and in the pilot plant operation.
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Research Article|
March 01 2011
A study about the use of chemicals in conventional tertiary treatment. Performances comparison of three municipal wastewater treatment plants and pilot plant experiences
A. Iborra-Clar;
*Department of Chemical and Nuclear Engineering, Polytechnic University of Valencia,Camino de Vera s/n, 46071 Valencia, Spain. E-mail: [email protected]; [email protected]; [email protected]; [email protected]
E-mail: [email protected]
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J.A. Mendoza-Roca;
J.A. Mendoza-Roca
*Department of Chemical and Nuclear Engineering, Polytechnic University of Valencia,Camino de Vera s/n, 46071 Valencia, Spain. E-mail: [email protected]; [email protected]; [email protected]; [email protected]
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A. Bes-Pií;
A. Bes-Pií
*Department of Chemical and Nuclear Engineering, Polytechnic University of Valencia,Camino de Vera s/n, 46071 Valencia, Spain. E-mail: [email protected]; [email protected]; [email protected]; [email protected]
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J.J. Morenilla-Martínez;
J.J. Morenilla-Martínez
**Entidad Pública de Saneamiento de Aguas residuales. Generalitat Valenciana. Álvaro de Bazán 10, entlo. 46010 Valencia. Spain. E-mail: [email protected]; [email protected]
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I. Bernácer-Bonora;
I. Bernácer-Bonora
**Entidad Pública de Saneamiento de Aguas residuales. Generalitat Valenciana. Álvaro de Bazán 10, entlo. 46010 Valencia. Spain. E-mail: [email protected]; [email protected]
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F.J. Martínez-Francisco;
F.J. Martínez-Francisco
**Entidad Pública de Saneamiento de Aguas residuales. Generalitat Valenciana. Álvaro de Bazán 10, entlo. 46010 Valencia. Spain. E-mail: [email protected]; [email protected]
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J. Illueca-Muñoz
J. Illueca-Muñoz
*Department of Chemical and Nuclear Engineering, Polytechnic University of Valencia,Camino de Vera s/n, 46071 Valencia, Spain. E-mail: [email protected]; [email protected]; [email protected]; [email protected]
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Water Practice and Technology (2011) 6 (1): wpt2011005.
Citation
A. Iborra-Clar, J.A. Mendoza-Roca, A. Bes-Pií, J.J. Morenilla-Martínez, I. Bernácer-Bonora, F.J. Martínez-Francisco, J. Illueca-Muñoz; A study about the use of chemicals in conventional tertiary treatment. Performances comparison of three municipal wastewater treatment plants and pilot plant experiences. Water Practice and Technology 1 March 2011; 6 (1): wpt2011005. doi: https://doi.org/10.2166/wpt.2011.005
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