Common issues related to water sources
|
Factorial |
The Problem Of Water |
Harm |
|
Taste |
Odor of chlorine disinfection |
Irritating when using water |
|
Color |
The yellow color of iron and manganese compounds. The green color of seaweed and organic compounds |
Offensive sensory |
|
PH |
PH>7 usually contains many carbonate and bicarcabonate ions. |
The most recognizable sign is metal corrosion |
|
PH<7 usually contains many acid-based ions |
PH <7 damage tooth enamel |
|
|
turbidity of water |
Often measure the presence of colloids, clay, algae and microorganisms |
Causing discomfort to users and possible microbiological contamination |
|
Hardness of water |
Causing white deposits in heating equipment, hot water pipes, cooling equipment or boilers |
Calcium is essential for the body. But if the amount of calcium exceeds the limit, it will cause problems for gastric mucosa, kidney diseases |
|
Manganese content |
Manganese usually produces a black deposit in the water and the bottom of the tank |
Manganese has a low toxin content, does not cause cancer, but if the content is high it will cause unpleasant taste. |
|
Asen |
Because of permeability through many different geological layers, groundwater often contains more arsenic than surface water. In addition, arsenic is present in water sources when contaminated with industrial wastewater and pesticides. |
Arsenic infection can cause skin and lung cancer |
|
Copper content |
Copper is present in the water due to corrosion on pipes and equipment made of copper |
High amounts of copper will cause many dangerous diseases |
|
Fe+ Content |
Because two iron ions are susceptible to oxidation three iron hydroxides, self-precipitating and settling so that iron does not exist in surface water. For groundwater, in the absence of gas, iron usually exists in the form of Fe2 + ions and dissolves in water. When cleared, iron two will turn three iron, precipitate of three iron hydroxides with yellow color, easy to settle. In case the water source has many organic substances, iron can exist in the form of glue (organic complex) very difficult to handle. |
With a low pH water source will cause corrosion of pipes and containers. Iron is not harmful to the body, but high iron content will make the water taste fishy, yellow, and difficult to use. |
|
|
|
|
Identify problems through support tools
High water solids can use electrolysis pen to detect or TDS meter to detect. For electrolysis pen: After 15s of water electrolysis, solids will settle, sensory we can see. If using a TDS pen to measure, it will produce the total amount of solids dissolved in water.
Water contains a lot of calcium: use a solution for measuring calcium levels. Add 1 drop of solution to the water to be tested, if the water contains calcium will turn purple, otherwise the water will remain the green color of the test solution.
A PH meter or litmus pen can check the pH of a high or low water.
Many toxic substances, heavy metals .... cannot be identified by tools or senses.
Clear, odorless, tasteless water is not necessarily guaranteed, by many toxic substances, heavy metals ... by senses or unrecognizable tools. To know exactly what the problem is about the water source or not, it is necessary to bring water to reputable testing agencies to check and evaluate. Institute of Occupational Health and Environment (leading water testing agency of the Ministry of Health), Vietnam General Department of Quality Measurement (Ministry of Science and Technology), Pasteur Institute ... are reputable units. Department to do water quality assessments. People can go to these facilities to do tests that give an accurate conclusion about the water source.
