ANALYZE - EVALUATE WATER QUALITY ACCURATELY, QUICKLY, AT REASONABLE COST

Currently, the environmental protection, especially the water resources protection, is an issue of global concern. In Vietnam, the main source of water comes from an extremely rich river system. The pollution usually comes from the direct discharge of waste into the river system. This can be said to be the main factor explaining the increasing environmental pollution nowadays.

1. Water quality assessment parameters

To evaluate the water quality as well as the level of water pollution, it is possible to rely on a number of basic indicators and set the time of each indicator according to a country's Environmental Protection Law or a standard. International regulations exist for each type of water and for the different use of the water. Combining the requirements of water quality assessment parameters and water pollutants can provide water quality assessment parameters.

pH index

The pH is one of the most important and frequently used parameters used to evaluate the level of pollution of water sources, wastewater quality, water hardness, flocculation, and corrosion potential. Therefore, testing the pH to complete the water quality in accordance with technical requirements for each stage of management is very important, moreover, ensuring the quality for users. When the pH index is lower than 7, the water has an acidic environment; a pH higher than 7 means that the water has an alkaline environment. The latter can be due to chemicals which entered the water environment.

SS index (solid solved - suspended solids)

Suspended and total solids affect water quality in many aspects. Low levels of dissolved solids in water limit the growth or prevent the development of aquatic life. High levels of dissolved solids in water often have a taste.

DO index (dyssolved oxygen - dissolved oxygen in water)

The oxygen present in water is, on the one hand, dissolved from oxygen in the air, and on the other hand, produced from photochemical synthesis reactions of algae and plants living in the water. Factors that affect the dissolution of oxygen into water are temperature, atmospheric pressure, flow, location, and terrain. The DO value in water depends on the physical, chemical properties and biological activities occurring in it. DO index analysis allows us to evaluate the level of water pollution and to check the process of water quality assessment parameters in wastewater treatment.

COD index (Chemical oxygen Demand - chemical oxygen demand)

The COD index is an important standard to evaluate the pollution level of water (wastewater, surface water, domestic water) because it indicates the amount of organic matter in the water. A high COD content in the water shows that the water source has many organic pollutants.

BOD index (Chemical oxygen demand)

The BOD index is the amount of oxygen (expressed in grams or milligrams of O2 per volume unit) needed for microorganisms to biologically oxidize organic substances in the dark under standard conditions of temperature and time. Thus, the BOD index reflects the amount of easily biodegradable organic substances present in the water sample.

Ammonia Index (NH4+)

In the water, ammonia is present in the natural surface of the area only at trace concentration (less than 0.05 mg/l). In water sources with acidic or neutral pH, ammonia is present in the form of ammonia ion (NH4+); in water sources with alkaline pH, ammonia exists mainly in the form of NH3 gas.

Nitrate index (NO3-)

Nitrate is the final product of the decomposition of nitrogen-containines in substances found in human and animal waste. In natural water, nitrate concentration is usually less than 5 mg/l. In areas polluted by waste, fertilizers, and high nitrate concentrations, this is a good nutritional environment for algae and seaweed growth, affecting the quality of domestic water and aquatic products.

Phosphate index (PO43-)

Phosphate is a nutrient for algae growth. Phosphate concentration in unpolluted water sources is usually less than 0.01 mg/l. Sources of phosphate introduced into the environment are human and animal feces, and wastewater from some phosphate fertilizer industries, the food industry and in water flowing from the fields. Phosphate is not toxic to humans.

Chloride index (Cl-)

Chloride is present in water due to domestic waste and industrial wastewater, mainly from the food processing industry. It is also due to the intrusion of sea water into estuaries and groundwater.

Coliform index

Coliform bacteria (Coliform, Fecal coliform, Fecal streptococci, Escherichia coli...) are present in the small intestine and feces of warm-blooded animals. Through the digestive tract, they enter the environment and thrive if conditions exist, like a favorable temperature.

Heavy metal index

Heavy metals (Arsenic, Lead, Chromium(VI), Cadmium, Mercury...) are present in water for many reasons: during the dissolution of minerals, metal components that are naturally available or used. in construction projects and industrial waste. The effects of heavy metals vary depending on their concentration, being beneficial if they are in low concentrations and very toxic if the concentrations exceed the allowable limit.

2. Water sample testing service at the lowest cost in the market

Depending on the criteria and implementation methods and testing purposes, there will be different water sample testing packages. Normally, the price for water sample testing will range from 560 thousand VND depending on the request for water quality testing criteria from consumers.

The FEC Group Joint Stock Company deploys water sample testing service packages as follows:

- Analysis and assessment of surface water quality for aquaculture

- Analysis of daily water use

- Analysis of bottled drinking water for business purposes

- Analysis of water supplied to factories, companies, and production and business units

- Analysis and evaluation of the water quality for organic agriculture and high-tech agriculture

- Analysis of water quality as required.

The current water treatment that meets the water quality assessment parameters is an urgent issue, given top priority by the State, environmental protectionists, and non-governmental organizations. Therefore, all agencies and organizations that discharge waste into the environment need a special attention and support from specialized environmental units in building standard waste discharge systems in order to ensure that the water discharged into the environment meets the allowed technical standards.

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FEC Group Joint Stock Company

Phone number: 0356.541.516

Address: 7/71 Luong Van Tam, Dinh Ke Ward, Bac Giang City

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