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Introduction: Reverse osmosis (RO) is a method for purifying water. Ir separates water from incrustations, through semi-permeable membranes; absorption of scales can cause damage to the membranes, affecting the process. Injecting antifouling removes and inhibits its overproduction. The objective of this scientific article is to learn about antiscalants, using as a method the bibliographic review of previous works that have operated with these, through the analysis of their processes and conclusions, to study how they vary from each other and which one implies better results. Objective: To analyze the most common antifoulings today through a bibliographic review, where compounds that have metaphosphates and polymers as a chemical base are studied. Materials and Methods: The review of 3 original publications that posed as the main topic the use of different antiscalants and their action on the membranes of reverse osmosis equipment was carried out. The reviewed articles were published in the 2018-2021 period, taking into consideration the quality and nature of the publications. Results and Discussion: According to the comparative analysis of the chosen antiscalants, the effect they have with respect to the membranes of reverse osmosis equipment was monitored. To analyze the results, aspects of function, dosage, injection point and conclusions obtained from each one were considered. Conclusions: Compared to phosphinocarboxylic acid and the modified base, sodium hexametaphosphate has shown better results in the industry with respect to reverse osmosis membranes in water purification processes. [ABSTRACT FROM AUTHOR]

The purpose of the present report aims at studying consumption water in Breezes Jibacoa hotel by means of a physical, chemical and microbiological characterization of input and output water at the inverse osmosis plant engaged to desalinate the water in that installation. The odor, color, pH, electrical conductivity, chlorides, total hardness, total dissolved solids, ammoniac nitrogen, organic nitrogen, total fats, oils, and coliforms were evaluated. In addition, a general balance of consumption water availability and associated cost to alternative sources of water supply were made, based on the standards and regulations established in the country, reaching to the conclusion that this plant works satisfactorily and that the hotel requires alternative sources to replace potable water demand. [ABSTRACT FROM AUTHOR]