APPLICATION TESTS for the PHASE V ARTHUR
RESPIROMETER Development of the following tests by Arthur Technology (now Respirometry Plus) began over 40 years ago when the Arthur Respirometer was introduced. The tests have been used by operators, technicians and consultants worldwide. Customers receive detailed written instructions for performing these tests, or they may choose to learn through our Distance Training program - one-on-one training sessions conducted by phone and fax.
.Influent Characteristics Tests - This is where good plant operation begins, with timely, upfront information that gives you a real time look inside the process. TEST THE INFLUENT FOR... Organic Load (amount of food) Treatability -
Treatment TimeTM Toxicity – Carbonaceous – Nitrogenous Rapid Response Test (15 minutes) Influent
. Process Control Tests - Use these tests for Economical Operation, Increased Plant Stability, Meeting Effluent Limit
GET CONTROL TEST RESULTS IN MINUTES . Anticipatory Aeration Control . Equalization Control . Wasting Control . Control of Viability . Return
Sludge Control . Nitrification/Denitrification . Fb/Mv
Control . Biosolids . Anaerobic Digestion
. Troubleshooting Tests - These tests should be run while the plant is functioning well. With graphs of "good operation" in hand, you will be well prepared to pinpoint and solve problems quickly when they occur.
Typical Respiration Graph . at the Inlet. at the Outlet. at the Return Sludge Viability
Index - How lively are the "bugs" ? 20-Minute
LET THE BUGS ALERT YOU TO PENDING PROBLEMS
THREE TESTS MOST COMMONLY PERFORMED BY THE ARTHUR RESPIROMETER
TWO TOXICITY TESTS - Rapid Results Screening Test and the Influent Inhibition Test
Preparing the Test In one chamber suspect sample is added to endogenous sludge from the wastewater plant. Endogenous sludge alone will be added to the other chamber as a comparison.
Graphic Test Results
COMPOST & BIOSOLIDS TESTING
Compost Process Control Testing
The Arthur Respirometer is capable of measuring respiration of raw samples by providing a continuous record of changes in oxygen use. In this application the solid compost is placed on a tier of perforated stages within the sample chamber and air circulates freely through the compost..
Stability Testing of the Final Product - A Stress Test
In this test, the compost sample is tested in an acqueous solution. This produces an environment in which there is intimate contact of food, micro- organisms and oxygen. Even small amounts of food are available for metabolizm by the microorganisms. This test ensures that the compost is stable.
Soil Biodegradability Testing - using either the Automated or the Simplified Respirometer.
Landfills have become a common method of disposing of municipal solid wastes in many communities.If the waste products are organic, it is likely that metabolic activity (probably anaerobic) will take place. The probability of it taking place can be determined by either performing solid tests or acqueous tests in the respirometer. Either method will determine whether or not toxins are present in the landfill.