| 20100149539 | APPARATUS FOR SENSING PRECIPITATION DENSITY OF SLUDGE IN WASTE WATER TREATMENT TANK AND METHOD THEREFOR - The present invention relates to an apparatus for sensing precipitation density of sludge in a wastewater treatment tank, more particularly to an apparatus and method for precisely taking density of sludge precipitated in a wastewater treatment tank without being contaminated by sludge. The present invention of an apparatus for sensing precipitation density of sludge in a waste water treatment tank comprises a container which is tube-shaped with a bottom thereof open and submerged in wastewater as filled with gas therein; and a sensor which is installed in the space in the container, and senses sludge density as not directly contacting with wastewater. | 06-17-2010 |
