WASTEWATER TREATMENT SYSTEM AND METHODS

摘要

The instant disclosure is directed towards methods of treating wastewater and related systems, where the system includes: an aerated zone comprising media (e.g. with sufficient surface area and porosity to sustain microbial growth and retain bacteria) and a non-aerated zone comprising compost, wherein the system is configured to remove emulsified oil (e.g. and grease) from a wastewater stream.

主权项

1. A method of treating wastewater, comprising:
flowing a wastewater stream comprising an emulsified oil content of not greater than 3500 mg/L through a chamber at a hydraulic retention time of not greater than 5 days, the chamber comprising: a bottom and at least one sidewall,
an influent end and an effluent end in liquid communication with a control volume in the tank, wherein the control volume is configured to retain the wastewater stream, the chamber comprising: an aerated zone and a non-aerated zone;wherein the aerated zone includes:
a media configured to provide a surface for microorganisms to adhere to, wherein the media has an average surface area of not greater than 2.0 cm2/g; wherein the media comprises a porosity of not greater than 50%; wherein the non-aerated portion includes compost; treating the wastewater in the chamber via the two zones to remove at least 85% of emulsified oil & grease from the wastewater stream to provide a treated water stream; and discharging the treated water stream from the chamber.