Assertion: pyrrhotite | /r/HasProperty | cheap
Facets:
Source sentences:
text: The pyrrhotite adopted in embodiments of the present invention are cheap and easily available; after the start-up step, the reactor, when adopted to treat wastewater with the low C/N ratio, generates almost no H+, which means no neutralizer (limestone) is required in the whole reaction; in addition, two mechanisms, namely, removal of nitrogen by autotrophic denitrification and removal of phosphorus by chemical reaction are utilized in embodiments of the present invention to realize synchronous removal of nitrates and phosphorus;