N-CON Systems BIOSCAN On-line Toxicity or Treatment Inhibition Monitor

Detect Inhibition Before it Becomes toxicity!

BIOSCAN Toxicity or Treatment Inhibition Monitors provide on-line protection against treatment plant upset, non-compliance with discharge permit limits, and contamination of critical receiving waters. The BIOSCAN continuously samples, analyzes and records the effects of effluent on the biological process used to treat the waste, responding to inhibitory or toxic materials in as little as six minutes.

BIOSCAN APPLICATIONS

Industries ensure that their pre-treated waste will not be toxic or inhibitory to the treatment plant that will receive it. The BIOSCAN also provides industries with documentation of non-toxicity or treatability of discharged waste as is required by the National Pretreatment Standards, 40 CFR.

Treatment Plants use the BIOSCAN for plant biomass protection. With the BIOSCAN's quick response time, toxic or inhibitory influents can be detected in time to initiate retainage or take other action to avoid plant upset. The system is also ideal for monitoring and documenting the quality of effluents discharged to critical receiving waters. Industrial treatment plants will find the BIOSCAN to be an essential part of any pre-treatment program.

HOW IT WORKS

Aerobic microorganisms consume oxygen as they digest biodegradable material. If this activity is normal, dissolved oxygen levels decrease. Inhibitory or toxic materials impair biomass growth and respiration, and little or no dissolved oxygen is consumed. The quantity of oxygen consumed is, therefore, an indication that the waste is treatable by or inhibitory to the biomass of the plant's activated sludge process.

Wastewater is automatically mixed with nutrients and aerated to saturation. The nutrients assure that the biomass will have sufficient food for vigorous oxygen demand. The mixture of food, oxygen, and nutrients flows through the biological filter at a rate that allows the biomass to breakdown and digest the available food. Residual dissolved oxygen in the filter effluent is measured with a special dissolved oxygen probe.

An upflow biological filter supports a microbial population based on the treatment plant's biomass. As can be seen in this image, the red plates rotate while the blue plates are stationary. This shearing action maintains a constant biofilm.

Several papers have been written About toxicity or treatment inhibition Monitors and are available for distribution. Also a poster was prepared by M. Mascetti for the Lawrence Livermore National Laboratory Summer Scholars Employment Program 2001

Would you like to place an order or request prices?

N-CON Systems Co., Inc.
P. O. Box 809, 180 North Street
Crawford, GA 30630
(800) 932-6266 FAX: (706) 743-8114

Return to N-CON's Home Page