AquaEnviro logo



Microscopic Examination for the Operation & Control of Wastewater Treatment Plants

10th March 2016, Aqua Enviro Training Suite, Wakefield

Very few activated sludge plants have been completely free from foaming and bulking problems at some time and other plants suffer these problems on a routine basis. In a similar way poor solids removal, inefficient BOD removal, odour problems, inhibition and toxicity can all occur on a seemingly random basis. Routine sampling and chemical analysis from this is expensive, demanding and its interpretation is not always clear. By contrast microscopic examination of the microbial consortium in the treatment plant is simple, inexpensive and provides extensive information as to the likely causes of plant problems. The results can also be used to optimize the performance of the plant to ensure that effluent is as good as the plant is able to produce and that energy costs and sludge production are at a minimum.

This paperback book with detailed contents of the training is given to all delegates.


The Protozoa

Introduction to floc morphology and protozoa

  • What are they?
  • What conditions do they like/dislike
  • What they tell us about the process conditions
  • Which protozoa are healthy for the plant

Lab session

  • Using the microscope
  • Floc structure
  • Protozoa identification
  • Filament numbers

Interpreting the results of microscopic examination

  • Health of the plant,
  • Changes that may have occurred in the influent,
  • Process conditions (F/M, sludge age),
  • Problems with the process (low O2, under/overloading,
  • Nutrient deficiency,
  • Toxicity

The Filaments

Filament identification

  • Filament characteristics on wet mounts
  • Cell size, shape, filament width, length, branching etc.
  • Staining, Gram, Neisser, sulphur

Lab session

  • Methods for identifying species
  • Filament characteristics on wet mounts
  • Identification charts
  • Stained filament characteristics
  • Gram and Neisser Staining

Control strategies for filamentous bacteria

  • Chemical and physical strategies
    • Chlorination
    • PAC
    • Spray jetting
  • Design considerations to eliminate filaments
    • selectors
    • floc loading
    • plug flow reactors

Delegate Rates

1 delegate = £350 (+VAT) = £420
2 delegates = £320 (+VAT) = £382 per person
3 or more delegates = £300 (+VAT) £360 per person

These discounts can be applied for multiple bookings for any of the training courses we offer.

Book your place

Please fill in the details for each delegate, choose any extras then click 'Continue'

Cost per person
£350 (ex. 20% VAT)

View our other events


Checkout now
Join our mailing list