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 Test Capabilities
 
Test Type
Application
Aerobic respirometer tests :
  a. Standard Methods 5210.D
  b. OECD Method 301: Ready
biodegradability
  c. USEAP, OPPTS
835.3110: Ready
Biodegradability
  d. ISO 7827, 9439, 10707,
10708
  e. Intrinsic and extant kinetic
tests
Respirometer tests are used to assess biodegradability of specific organic compounds or the mixture of organic constituents in industrial wastewaters. Intrinsic kinetic tests are used to provide biodegradation coefficients in enriched culture, single-compound environments. Extant kinetic tests are used to assess the biodegradation characteristics of specific organic chemicals in a natural environment such as a biological treatment plant.
Anaerobic respirometer tests:
  a. USEPA, OPPTS Method
835.3400: Anaerobic
Biodegradability of
Organic Chemicals
  b. Intrinsic kinetic tests
  c. Anaerobic biomass activity
tests
  d. Anaerobic toxicity assays
(ATA) and biochemical
methane potential (BMP)
tests

Anaerobic respirometer tests are used to assess biodegradation characteristics of specific chemicals or the mixture of chemicals in industrial wastewaters. Intrinsic kinetic tests are used to provide biodegradation coefficients in enriched culture, single-compound environments. Anaerobic biomass activity tests provide a measure of the maximum rate at which an anaerobic culture converts acetate to methane and to assess the fraction of active biomass in anaerobic cultures.
Bench-scale aerobic reactor tests:
  a. OECD Method 302:
Inherent Biodegradability:
Modified Semi-Continuous
Activated Sludge (SCAS)
Test
  b. USEPA, OPPTS Method
835.3210: Modified SCAS
Test
  c. USEPA Method 304A,
Biodegradation Rates
  d. OECD Method 303A: For
assessment of the
biodegradation of specific
chemicals in a sewage
treatment environment.
  e. Custom-designed bench-
scale reactor tests
Bench-scale reactor tests are designed to assess the rate and extent of biodegradation of specific organic chemicals or the mixed constituents of industrial wastes. The data are used for process selection; design of full-scale treatment facilities; or to assist in the operation of full-scale facilities. Custom bench-scale tests are designed to simulate the operation of full-scale processes and to provide estimates of treatment efficiency, waste biosolids production, and response to inputs of industrial wastes.
Bench-sale anaerobic reactor tests:
  a. Custom-designed bench-
scale reactor tests
  b. Municipal and industrial
sludge treatment

Bench-scale anaerobic reactor tests are custom-designed by CEL engineers to simulate the operation of full-scale processes and to provide estimates of treatment efficiency, waste biosolids production, and response to inputs of industrial wastes. Results of our bench-scale tests have been used worldwide as a basis for design of full-scale treatment systems.
Laboratory-scale pilot tests:
  Capabilities include design
  and operation of laboratory-
  scale pilot plants that can be
  run continuously under
  simulated full-scale operating
  conditions.
Laboratory-scale pilot tests allow longer-term operation of treatment units and better measures of performance of reactor performance than can be justified in semi-continuous batch reactors. These units allow simulation of full-scale operation under a variety of waste loads and operating conditions. CEL specializes in designing laboratory-scale pilot units that have process similitude with full-sale processes.
Soil and Compost Tests:
  a. Slurry, static soil, or column
tests of biodegradation of
organic contaminants in
soils.
  b. USEAP, OPPTS
835.5154:
Anaerobic biodegradation
in the subsurface
  c. Compost activity tests
using
modified ASTM Method
D-5975-96.
Soil test require special consideration to simulate the conditions in the soil environment. CEL specializes in using specially designed columns to conduct tests of soils in a near-insitu state. Compost samples are tested in essentially the same way as soil tests.
Physical/Chemical tests:
  a. Carbon absorption
  b. Coagulation/Flocculation tests
  c. Membrane (microfilter, ultra-
filtration, nano-filtration, and RO
applications)
  d. Granular-media filtration tests
Physical/chemical tests are used for pretreatment of industrial wastes prior to biological treatment, polishing of biologically treated effluents, and treatment of ground and surface waters for industrial feedstock or drinking water applications.
Standard tests:
  a. Chemical analyses
  b. GC analysis of volatile and semi-
volatile organics
  c. GC/MS analysis for identification of
metabolic intermediates and
unknown environmental
contaminants
We conduct standard analytical tests to support the batch, semi-continuous, and continuous test protocols described above. GC and GC/MS analyses are used as needed to assess fate of specific chemicals and metabolic intermediates in treatment plants and natural environments.
Other Services:
  a. On-Site pilot tests
  b. Forensic evaluations
We assist engineers and industries in setting up and operating on-site pilot plants for assessment of treatability or development of design parameters. We also can conduct on-site forensic evaluations to determine cause-and-effect relationships in industrial wastewater treatment plant, or to assess the impact of industrial wastewaters on municipal treatment plants.

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