Assertion: heavy metal | /r/AtLocation | wastewater discharge
Facets:
value: into rivers
type: TRANSITIVE-OBJECT
value: without proper treatment
type: OTHER
value: into trenches
type: TRANSITIVE-OBJECT
Source sentences:
text: When heavy metals, such as arsenic, cadmium, chromium, copper, lead, nickel and zinc, contained in wastewater discharge into rivers and trenches without proper treatment, the result is severe pollution, leading to environmental impacts on aquatic life, plants and ecology.