Reuse of dialysis reverse osmosis reject water for aquaponics and horticulture. 2021

Eason Chang, and Jo Anne Lim, and Chun Leong Low, and Asri Kassim
Department of Medicine, Hospital Sultan Abdul Halim, Sungai Petani, Kedah, Malaysia. easonchang1978@hotmail.com.

Water crisis is becoming a threat to the well-being of the human population worldwide and use of water for healthcare contributes substantially to this resource depletion. Hemodialysis consumes large quantities of water. A huge volume of high purity dialysis water is required to safely perform dialysis treatment. In this process, up to 60-70% of source water is discarded. Many strategies have been suggested to promote green dialysis, and these include reuse of water, however, very few dialysis facilities have taken the preliminary steps to employ it. We share our experience in a developing country on an innovative reject-water reuse program combining aquaculture, hydroponic and horticulture activities. This is by far the first report on a "green dialysis" project involving aquaponics that reuse dialysis reverse osmosis (RO) reject water. Our expereince suggests that reject water can be reused to promote water conservation with encouraging results. It provides a good and biosecure environment for fish breeding and vegetable farming . This project promotes a reduction in carbon footprint, a reduction in water waste, a sustainable organic food source, may lead to income generation, and provides a shared purpose and sense of pride among staff and dialysis patients. Encompassing "environmental protection" practices into a hemodialysis unit can be done with relatively simple and practical steps.

UI MeSH Term Description Entries
D009995 Osmosis Tendency of fluids (e.g., water) to move from the less concentrated to the more concentrated side of a semipermeable membrane. Osmoses
D006435 Renal Dialysis Therapy for the insufficient cleansing of the BLOOD by the kidneys based on dialysis and including hemodialysis, PERITONEAL DIALYSIS, and HEMODIAFILTRATION. Dialysis, Extracorporeal,Dialysis, Renal,Extracorporeal Dialysis,Hemodialysis,Dialyses, Extracorporeal,Dialyses, Renal,Extracorporeal Dialyses,Hemodialyses,Renal Dialyses
D006436 Hemodialysis Units, Hospital Hospital units in which care is provided the hemodialysis patient. This includes hemodialysis centers in hospitals. Hospital Hemodialysis Units,Renal Dialysis Units, Hospital,Hemodialysis Unit, Hospital,Hospital Hemodialysis Unit,Unit, Hospital Hemodialysis,Units, Hospital Hemodialysis
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000080802 Horticulture Branch of agriculture which involves the cultivation of vegetables, flowers, or ornamental plants for food, industrial, medicinal, or aesthetic purposes. It does not include CROP PRODUCTION on a large scale. Arboriculture,Floriculture
D014867 Water A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Hydrogen Oxide

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