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A. General Questions: 

How does DOSFOLAT®XS improve the efficiency of a biological sewage treatment plant ?

Filamentous baceria, what happens to their reproduction rate ?

How does DOSFOLAT®XS impoves the settleability of the sludge ?

Does DOSFOLAT®XS has an affect on the nitrogen metabolism?

Does DOSFOLAT®XS has an effect on the protozoa population?

Is it useful to feed extra bacteria when using DOSFOLAT®XS ?

What about the amount of sludge to be deposited when using DOSFOLAT®XS ?

What about the plant becoming "upset" as the result of a toxic thrust ?

What did plant operators report when using DOSFOLAT®XS?

At what year was DOSFOLAT®-sewage water treatment introduced in industry ?

Is it possible that DOSFOLAT®XS overdosage might harm a biological STW ?

Do the bacteria become "tolerant" to continued DOSFOLAT®XS -usage?




B. Details /Dosage and Solution Preparation:

What type of preparation tank for the diluted DOSFOLAT®XS -water solution is recommended ?

What is the basic rule for DOSFOLAT®XS dosing ?

What type of make-up or dilution water is recommended for DOSFOLAT®XS?

Is there a time-limit for the usability of diluted DOSFOLAT®XS-solutions ?

ANSWERS:: 

How does DOSFOLAT®XS improve the efficiency of a biological sewage treatment plant ?

DOSFOLAT®XS optimizes the enzymatic metabolism of bacteria and increases the variety,
population and activity of the microorganisms.

Filamentous baceria, what happens to their reproduction rate ?

DOSFOLAT®XS ends the excessive growth of filamentous bacteria .

How does DOSFOLAT®XS impoves the settleability of the sludge ?

Application of DOSFOLAT®XS decreases the amount of filaments and generates larger
and more cohesive flocs

Does DOSFOLAT®XS affect the nitrogen metabolism?

Yes, it activates the ammonia nitrification and promotes the decrease of urea usage.

Does DOSFOLAT®XS has an effect on the protozoa population ?

Yes, it increases the amount of stalk protozoa.

Is it useful to feed extra bacteria when using DOSFOLAT®XS?

The combination of DOSFOLAT®XS and "cold weather bacteria" results in a decrease of
polymer usage. There is a synergy between DOSFOLAT®Xs and added bacteria.

What about the amount of sludge to be deposited when using DOSFOLAT®XS ?

Practical experience over the last decade has proven that on average a reduction in the
order of 70% to 80% in the amount of sludge (aerob+anerob) to be deposited will be experienced.

What about the plant becoming "upset" as the result of a toxic thrust ?

In biological sewage plants of chemical factories DOSFOLAT®XS brings about stable operating
conditions, independent of fluctuations in the basic wastewater feed composition.The probability
of the plant becoming "upset" as the result of a toxic thrust is greatly reduced. The tendency
towards bulking sludge and other unfafourable biological conditions is diminished as shown by
statistics.The enhanced reliability extent thus gained increases the degree of the plant's effective
availability.

What did plant operators report when using DOSFOLAT®XS ?

More effective BOD-5 removal , transparency of wastewater improved. DOSFOLAT®XS saves
electricity costs for the centrifugal aerator, and considerably reduces the dry sludge-specific
polymer consumption in sludge conditioning .

At what year was DOSFOLAT®-sewage water treatment introduced in industry ?

In 1983.

Is it possible that DOSFOLAT®XS overdosage might harm a biological STW ?

No . In twenty years of practical worldwide application not a single case of harmful side effects
of any kind has been reported. A 1000 fold overdosage had no detrimental effect .

Do the bacteria become "tolerant" to continued DOSFOLAT®XS -usage?

No.

 

B. Details /Dosing and Solution Preparation:

What type of preparation tank for the diluted DOSFOLAT®XS -water solution is recommended ?

Use a polyethylene or polypropylene or fiber reinforced plastic tank. Do not use metal barrels.

What is the basic rule for DOSFOLAT®XS dosing ?

Never interrupt the dosage as this will lead to a breakage of the degradation cycle.

What type of make-up or dilution water is recommended for DOSFOLAT®XS ?

Use only demineralised water or distilled water: avoid clots.

Is there a time-limit for the usability of diluted DOSFOLAT®XS-solutions ?

It is recommend to prepare fresh diluted DOSFOLAT®XS ervery 7 to 10 days.