Subject: ON-LINE RESPIROMETER(BOD/TOXICITY MONITOR)

From: [email-masked] (PG)
Date: Tue, 24 Sep 96 16:07:05 GMT

We developed a on-line Respirometer that utilizes a patented
principle of measuring O2 consumption in gaseous stage in the
head space of the bioreactor instead of immersed dissolved
O2 probes, utilized in most other designs. Although the advantages
of measuring head space gas exchanges are numerous, the most
important advantage is the separation of the O2 sensor from the
aggressive media of sludge or wastewater and therefore, avoiding
the sensor’s damage or contamination. Besides measuring O2
consumption, there is the possibility of measuring additional gases
evolved from the wastewater or sludge such as CO2 and H2S. The
principle of Respirometer is based on measuring the respiration of
bacteria culture in the form of the fixed film attached to ceramic
granules. This bacterial culture is alternatively exposed to clean
water to measure background respiration and to waste water to
measure the increase of O2 consumption due to available nutrients.
If you are interested in receiving more information about this instrument,
please e-mail your street address.

GHOSH