Benefits of wastewater treatment
Wastewater is the type of water that is contaminated as a result of human activity in homes, businesses, industries, and agriculture. As it is contaminated, it must be evacuated and conducted through a sewer network to the wastewater treatment plants (purification stations) where it is processed to be reused or returned to the natural environment in suitable conditions.
Why is wastewater treatment so important?
Adequate eviction and treatment for polluted water does not occur in all countries, at least not at adequate levels, as is the case in Mexico. According to studies by the National Institute of Statistics and Geography, only 34% of the country’s municipalities treat wastewater, this means that 66% of polluted water is discharged into rivers, causing the alteration and degradation of the ecosystem, affecting in turn the human lives of nearby sectors.
Based on the foregoing, it is known that in Mexico there are a total of 1,941 wastewater treatment plants nationwide, however, this is an insufficient amount to meet the demand for the sanitation of polluted water.
The objective and importance of wastewater treatment plants is to disinfect contaminated water to preserve the environment and promote greater availability of this resource. For this, there are national regulations such as the Regulation of the National Water Law.
Are there economic benefits to reusing treated wastewater?
- The Economic Benefit is obtained by selling the treated wastewater to the agricultural sector, which is acquired at a lower cost than conventional water, because the main consumption of the agricultural sector is water for the irrigation of vegetables and to give drink to the won.
- The sale of this resource reduces the operating costs of the wastewater treatment plants, which reduces the cost of irrigation of vegetables and also assumes the constant and reliable availability of this resource.
- The urban sector also benefits from commercial and heavy industry activities that do not require the consumption of drinking water, such as the use of water to power boilers, turbines, cooling towers, thermal power plants, among others.
Are there environmental benefits of reusing treated wastewater?
- Health and Environment: wastewater once it has been treated must be returned to nature by dumping it into rivers, lakes or seas so that its hydrological cycle continues, as long as it is in adequate conditions, in this way it does not prevent the alteration of ecosystems, pollution to biodiversity is reduced and the risk to public health is mitigated.
- Use of sanitized water: the reuse of these treated water by the primary sector (agriculture, fishing, livestock, farms) and the urban sector (industry, commerce, domestic), generates environmental benefits by reducing the amount of contaminated water in ecosystems of rivers and seas.