Characteristics of effluents from healthcare waste treatment with alkaline hydrolysis

Autor:	Sílvia C. Pinho, Manuel F. Almeida, Olga C. Nunes, Carmen S. D. Rodrigues
Přispěvatelé:	Faculdade de Engenharia
Jazyk:	angličtina
Rok vydání:	2016
Předmět:	Environmental engineering [Engineering and technology] digestive oral and skin physiology Wastewater treatment Environmental engineering Tratamento de águas residuais Engenharia do ambiente Engenharia do ambiente [Ciências da engenharia e tecnologias]
Zdroj:	Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP
Popis:	Although alkaline hydrolysis emerges as an alternative process to treat healthcare waste (HCW), information about its emissions is scarce, namely as regards effluents production. This work aims to characterize the effluents from alkaline hydrolysis tests with samples of components usually present in HCW, under a temperature of 110 degrees C and with 1 M NaOH aqueous solutions. Some of the regulatory parameters for discharging effluents were determined; also, tests for assessing aerobic and anaerobic biodegradation of those effluents were carried out. The effluents showed values lower than threshold values for almost all the parameters except pH, total nitrogen, TOC, COD and BOD5. Although with high organic load, the effluents from discarded medical components (DMC) and animal tissues (AT) showed a percentage of aerobic biodegradation of 50.5 and 52.9%, respectively. The anaerobic biodegradability obtained for the effluents from DMC were 22.3 and 42.2% for those with AT.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::cc681f87a70b836ea77964659cbbe310 https://hdl.handle.net/10216/102944 Zobrazit plný text záznamu