Wastewater treatment method comprising decantation and fine...

Details Wastewater treatment method comprising decantation and fine... Wastewater treatment method comprising decantation and fine...

2011-07-19

2011-07-19

Hruskoci, Peter A (Department: 1776)

Liquid purification or separation

Processes

Ion exchange or selective sorption

C210S668000, C210S694000, C210S714000, C210S721000, C210S727000, C210S748110, C210S754000, C210S756000, C210S760000, C210S764000

Reexamination Certificate

active

07981297

ABSTRACT:
A method for removing helminth egg and other suspended solids from a wastewater stream includes directing the wastewater to a ballasted flocculation system and adding a coagulation agent, flocculation agent and a ballast into the wastewater. Sludge is settled from the wastewater in a settling tank at a rate of at least 10 meters per hour. The method further includes removing helminth egg by filtering the effluent through a fine screen having a mesh diameter of approximately 5 micrometers to approximately 25 micrometers. After passing through the fine screen, the filtered effluent has less than one helminth egg per liter.

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