This paper evaluates the performance of a subsurface flow constructed wetland at Worms Germany used for the treatment of black and grey water from a non-residential facility. Snap black water samples from four wells made up of a clarifying unit, an activated carbon unit and an aeration unit were analysed insitu using the HACH HQ40d multimeter and exsitu using Sensafe water metals check strips for preliminary metal detection onsite. HACH bar code reagents, a HACH Digital Reactor Block 200 (DRB200) and a HACH DR 3900 Spectrophotometer were subsequently used for the analysis of lead (Pb), chromium (Cr), cadmium (Cd), biochemical oxygen demand (BOD), Chemical Oxygen demand (COD), Ammonium (NH4-N) and Nitrate (NO3-N) in the lab. The removal efficiency for the constructed wetland was in the order BOD > Cr > COD > NH4-N > NO3-N > Pb. The 57.90% removal efficiency of COD for the constructed wetland was due to the higher fractions of inert COD which constitutes a part black water. This makes the use of the BOD/COD ratios of 0.69 and 0.5 for wells 1 and 4 an unreliable index for the determination of amenability of COD in black water with regards to microbial activity at the wetland at Worms. The pH range of 7.2–8.4 of the blackwater is conducive for the growth microbes necessary for the breakdown of organic matter in the black water. Further investigation including plant and sediment analysis over different seasons has to be undertaken if the efficiency of the constructed wetland for nutrients and metals removal is to be optimized.
We are all consumers. Life is only possible because of consuming. The act of consuming can be defined as the breaking down of natural or artificial structures to satisfy biological or cultural needs; is among the farthest reaching of human activities (Csikszentmihalyi 2012). Today, the act of consuming could empower consumers to adopt conscious, ethical and responsible criteria in the daily routine to improve the consumption and get a personal and collective life, more based in freedom, fair, loyal and happiness (Martínez 2005). In this way the Transformative Consumer Research (TCR) is an initiative among researches committed to studying the role that consumption plays in the major social problems of daily consumption, among them obesity, addictions, materialism, hunger, homeless, and poverty (Ozanne, et al 2011). Inspired on TCR and the ethnoconsumer (Venkatesh 2013), the focus of this paper is an exploratory qualitative research with the main objective of showing how the Social Representation of Mexican responsible consumer is focused on shopping at small groups of local producers. The attitudes, interests and opinions will be identified in this first step through point-of-sale open interviews with responsible consumers, with local products offered in Guadalajara and Queretaro urban cities. The information gathered will be analyzed using an inductive method for defining preliminary categories, while using the analysis software Atlas Ti for mapping conceptual networks. This study aims to provide assumptions and variables for further study on transforming consumption.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.