Case study

Domestic wastewater

This case study was based on a real case.

previous case

Challenge
Opportunity


A WWTP with capacity to treat 9 000 m3/day of domestic sewage intended to use a chemical product without environmental impact as coagulant in their decanter system.

The treatment consisted of an anaerobic reactor followed by a decanter system.

Iron chloride was used as coagulant and a high molecular weight polymer as flocculation adjuvant.

After laboratory tests for dosage determination, Flox®-QT was successfully implemented as coagulant/flocculant. The introduction of the Flox®-QT in the process is made immediately after the anaerobic reactor, eliminating the use of the polymer previously used as a flocculation adjuvant.

Wastewater
characteristics


graph_WWC_wastewater_en

Cost
analysis


Total operation cost reduction: 8% (€/m3 treated effluent + sludge)

Application
Flowchart


infographic_wastewater_en

Effluent
after treatment


graph_EAT_wastewater_en

Treatment
comparison


graph_TC_wastewater_en

Removal
percentage


graph_RP_wastewater_en

BENEFITS OF THE application
of Flox®-QT


Increased efficiency in the physical-chemical treatment

Reduction of the sludge volume in about 30%

Production of sludge appropriate for use in agriculture or composting after stabilization of pathogens and reduced odor

Effluent with a final pH of around 7.0 eliminating the need for correction with alkalizing agent before discharge

Rationalization of manpower (a single product is handled)

Elimination of corrosion of equipment and piping associated with the use of iron chloride

Improved occupational health and safety of operators through the use of a product not classified as dangerous on the UN list
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