Type 0581


Biological Products:



Bioaugmentation products for Wastewater applications in Papermills, Refineries, Chemical, Tanneries, Municipalities, Textiles, Steel, Agriculture, Animal feedlot,  Gun Powder plant, Food and Beverage- Dairy Products, Orange Juice factory, Wineries, Cookie factory, Vegetable processing plant, Meat packing, Barbecue Restaurant, Aquaculture, Ornamental Ponds for algae control, CAFO, Nursing homes, Military, Campgrounds, Universities, Regulatory agencies


Lab Services:



Filamentous Identification Lab Service. One reason to identify filaments is to determine the filaments characteristics and then determine the type present.  If the type is found out, a root cause can usually be associated with a particular filament.  If the cause is known, then a correction can be made to alleviate problems. Chlorination is only a quick fix.  Without process changes, filaments will grow back after chlorination.

Wastewater Biomass Analyses and Cooling Tower Analyses also available


Training Materials:



Training is an integral part of any job. Not everyone is at the same level of training. Many people want beginning concepts and basics. Some need technical information or troubleshooting. Some want equipment, technology or process information.

We have developed a full set of Basic training, Advanced training, Filamentous Identification the Easy Way as well as custom training CD's Manuals. We also provide hands-on training classes and soon will have an Online "E-University".




 Type 0581


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We hope you like the new look of our Filamentous Bacteria Identification Pages

If you would like more information on filaments, you might want to consider purchasing our Filamentous Identification the Easy Way Training materials.

We also have our lab that can perform a Filamentous identification lab analyses of your own MLSS for more information


Type 0581

This filament is very rare. Don't get overly technical.  When trying to determine species, stick to the basics, and focus on the causes and controls of the filaments present. The main point of any filamentous identification is not to get a PhD, but to fix your plant!



Medium length, non-motile filaments (100-200 µm).  Smoothly coiled filaments with no branching. Cells are rectangular  (0.4 x 0.7 µm) and with a rigid trichome.  There is no cell septa.  Filaments are found mostly within  the floc structure but may occur free in the bulk solution in patches. The filament staining is Gram negative and Neisser negative. No attached growth. No sulfur granules.  No sheath.


Similar Organisms:

Microthrix parvicella  is similar although it differs in staining reactions.


This filament is usually found in environments where there low F/M with a long MCRT.  This can be either a high MLSS concentration or a low BOD loading (<.2 lbs/BOD/lbs MLSS/day).  We have seen this with grease also, similar to Microthrix parvicella. It appears to be a smaller version of M. parvicella.



F/M can be changed by increased sludge wasting or changing from complete mix to plug flow.  RAS chlorination should be definitely used if in the rapid growth phase.



Type 0581 is ranked 15th in predominance.


For more information on Filamentous Identification

 Microthrix parvicella

 Type 1851

More photos to come. . .


If you need more information on our Filamentous Identification the Easy Way Training CD or on Internet training on Filamentous bacteria, causes and controls.

How and why on Wastewater Biomass Analyses

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