Overview
ETE Alegria Teresina is a secondary treatment plant in Teresina, Piauí, Brazil, serving approximately 3,900 people with a discharge volume of 480.58 units.
ETE Alegria Teresina is a wastewater treatment plant located in the Catarina neighborhood of Teresina, the capital of Piauí state in northeastern Brazil. The plant serves a population of around 3,900 residents, reflecting a small-scale municipal facility typical of peri-urban or smaller communities within the region. The plant provides secondary treatment, which is the standard level required under Brazilian regulations for most urban wastewater systems. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. Situated inland in the semi-arid Caatinga biome, the plant's discharge likely enters local streams that drain toward the Parnaíba River basin, one of the major river systems in northeastern Brazil. The Parnaíba River flows northward into the Atlantic Ocean, supporting diverse aquatic life and providing water for agriculture and human consumption. Proper treatment is essential to protect these downstream ecosystems and water resources.
Environmental context
The plant is located in the Parnaíba River basin, which drains the semi-arid Caatinga region of northeastern Brazil. The Parnaíba River flows approximately 1,400 km north to the Atlantic Ocean, forming a large delta near the border of Piauí and Maranhão. This river system supports a variety of fish species and provides critical water for irrigation and drinking water supplies. The Caatinga biome is ecologically sensitive, with seasonal rainfall patterns that concentrate pollutants during dry periods, making effective wastewater treatment important for maintaining water quality.
Frequently asked questions
ETE Alegria Teresina is located in the Catarina neighborhood of Teresina, the capital of Piauí state in northeastern Brazil.
The plant serves approximately 3,900 people, classifying it as a small-scale municipal wastewater treatment facility.
The plant provides secondary treatment, which typically involves biological processes to reduce organic matter and suspended solids before discharge.
Brazil's National Environmental Council (CONAMA) sets discharge standards for wastewater treatment plants. Secondary treatment is the minimum requirement for most urban areas, and plants must comply with federal and state permits to protect water quality.
The Parnaíba River basin is a major hydrological system in northeastern Brazil, supporting diverse aquatic life and providing water for agriculture, industry, and human consumption. The river flows into the Atlantic Ocean, forming an important delta ecosystem.
Nearby plants