这种设备采用生物膜法处理方式，其中AO工艺（缺氧-好氧）是一种高效脱氮工艺，具有很高的处理效果。经过处理后的水质达到国家标准，可以直接排放。A/O法一体化污水处理设备适用于各种污水处理，包括城市污水处理、工业污水处理、农村污水处理等，其处理效果比传统 ...

In the nitrogen cycle, phytoplankton and other marine plants turn nitrate (NO 3) into organic nitrogen during photosynthesis. The organic nitrogen sinks into the deep ocean, where microbes "eat ...

A career coach detailed an incident where he was asked to flag an employee as an "attrition risk". Here's what happened ...

Toxic “forever chemicals” have been found in more than one in four public drinking water systems this year in concentrations ...

This concept is particularly well illustrated by marine animals that inhabit oxic–anoxic boundary zones: their chemoautotrophic endosymbionts provide energy and nutrients that enable host ...

As a young woman, Aunty Mo grew up in a society where a woman could drive safely around the city, or trek from one village to another without fear of being molested. There was no kidnapping. In those ...