The main purpose of this project is to reduce the water pollution caused by livestock and citizen sewage in the upper reaches of Long-Jing Creek drainage, and cooperate with the Long-Jing Creek waterfront environment construction project of the Hakka Affairs Office of Pingtung County to avoid poor perception of the waterfront environment of Long-Jing Creek due to water quality and odor problems. This project sets up a water purification field has 10,000CMD average daily treatment, and the inlet water quality of BOD, SS and NH3-N are 24 mg/L, 59 mg/L and 20 mg/L respectively. And treatment efficiency of the water purification field, BOD reduction rate is about 83.25%, the SS reduction rate is about 87.25%, and the NH3-N reduction rate is about 86.39%. As the natural ecological method of on-site treatment, this plan takes water quality purification as the main axis, reduces river pollutants, improves people's quality of life, restores river self-purification ability, improves nearby ecological environment and other environmental benefits, and takes ecological education, environmental friendliness, resource-based and sustainable development as the project’s goal.

Long-jing creek, Water purification field, Ecological engineering method