Developing a Model for Controlling Internal Corrosion in Water Supply System

Abstract

A model was developed to generate charts that fit the conditions as diverse temperatures and ionic strengths, and that estimate the diversified state of water. The chart can be used as a tool for controlling corrosive waters resulted in internal corrosion and the model producing charts composed of a number of sub modules, and each module incorporated parameters including acidity, alkalinity, pH, and calcium ion. Utilizing the chart water quality of the raw water in G water purification works was estimated to be unsaturated and Langelier index becomes −1.4 which means that the water is highly corrosive and calcium carbonate would not be precipitated. Thus, the water requires treatment as the injection of water stabilizing chemicals to promote an oversaturated (protective) condition. As a result of adding 5 mg/L of lime, it is possible to be precipitated with 5 mg/L, and the water becomes noncorrosive. In addition, when 5 mg/L of caustic soda is added as a conditioning chemical, it signifies to be precipitated with 9 mg/L, and the water also turns out to be largely noncorrosive. Both chemicals are possible to use for the water to be favorable for the formation of a protective film. Optimum injection rate for controlling corrosion can be found by repeating the procedures until the well-conditioned water criteria are satisfied.

Smart System for Stabilizing Water Flow Output on Android-Based Taps

“…Development again in 2017 where the system can regulate the flow rate of water, which at the same time filtrates to avoid people who consume water that is not suitable for drinking [17] as well as efforts to control corrosion in water [18]. Development in 2018 by creating a PDAM water usage monitoring system using NodeMCU based on Android is still manual, namely sending officers to customers' homes and recording them one by one [19], developed again in 2019 with research analyzing water quality [20] because Water resources have become a major problem in the development of social and economic development, so it is necessary to monitor the quality of water resources [21], water quality is influenced by many factors such as flow rate, contaminant load, transportation media, and site-specific parameters [22] as well as research that monitors Arduino-based water use which is considered to bless effective and efficient and requires a lot of energy and consumes a lot of time, the water ether used by PDAM is also still analog so that water usage data is difficult for customers to know [23].…”