on evaporation (therefore, a sealed floor is required to avoid soil pollution). A succession of shallow layers of sludge is dried and several lagoons are required for treatment rotation. When approximately 1 m ... Sludge treatment ... Filtration Sludge treatment Sludge dewatering...

sulphate and, more rarely, ferrous sulphate and aluminium salts. The Fe3+ ion is by far the most effective and the widely used reagent on organic sludge (WWTP and IWWTP biological treatment).The choice ... Sludge treatment ... Sludge treatment Sludge conditioning Flocculation...

. The GreendafTM MW is the natural child of a GreendafTM tw and a GreendafTM BWW : From the GreendafTM tw it has got plug flow flocculator From the GreendafTM BWW it has got the depth and the sludge chain ... Compact & modular A sludge concentration similar to those of thickened sludge Simple and safe Easy ON/OF ...

); the installation can operate unmanned if the sludge is relatively constant. All mechanical safety mechanisms constitute part of the standard equipment and, with the new sludge concentration sensors, unit automated ... Sludge treatment ... Centrifugation Sludge treatment Sludge dewatering...

Sludge treatment ... A sludge treatment system can only be properly designed if we know the answers to the following three questions: what is the quality of sludge to be treated? how much suspended solids ... liquid sludge treatment...

internal collection The above descriptions of the different clarifiers specified whether or not they included a scraper mechanism: without scraper system: the sludge is gravity concentrated ... Settling Settling tanks Sludge treatment ... sludge removal mechanisms...

® is characterized by the integration of the 3 following zones, without necessity of external pumping : Central zone = Recirculation zone Peripheral zone = Settling zone Bottom = Sludge collection ... Scraper settling tank with internal sludge recirculation by low-speed turbine ... sludge recirculation settler – Turbocirculator®...

This granular sludge bed reactor is the most frequently used, and is suitable for effluents that lead to the formation of this type of sludge (see anaerobic bacterial cultures). design reactor ... Sludge treatment ... anapulse (sludge blanket digester)...

This type of clarification simultaneously applies the principles of solids contact flocculation (see flocculation with sludge contact) in combination with the hindered settling of flocculated ... sludge contact clarification...

, where e: parameter associated with the floc formed (size, settleability, filtration capacity …) or with the quality of the clarified water. C: sludge concentration in the flocculation tank. G ... flocculation with sludge contact...

The basic principle underlying these units has already been described in sludge contact clarification. In this type of settling tank, the sludge formed by flocculation constitutes an expanded mass ... sludge blanket settling tanks...

In this type of unit, sludge is separated from clarified water in a clarification zone. The sludge is then recycled to a reaction and mixing zone equipped with mechanical (Accelator, Tur ... sludge recirculation settling tanks...

A model plant in recovering potential energy from sludge. With a 240,500 population-equivalent capacity, this plant, built by SUEZ, treats the wastewater of 11 towns located in the Terres de Saint ... Waste water Sludge treatment ... Centrifugation Wastewater Sludge treatment Sludge digestion Activated sludge Anaerobic Sludge dewatering Sludge drying Biogas Methane fermentation ... Sludge dewatering Deodorization/Venting/Evaporation Methanisation...

(softening). It combines the principle of lamellar settling with an integrated sludge thickener. No need of additional sludge thickening equipment before dewatering. The densification of sludge allows ... Very low water loss Compactness due to its modular and lamellar design Integrated sludge thickening - particularly suitable in case of small footprint or if water loss should be limited ... Clarifier with optimized flocculation using external sludge recirculation ... lamellar and sludge contact clarifier – Densadeg® ...

The SG circular clarifier is a technology uses in secondary clarification of wastewater. The SG clarifier is equipped with a diametral suction system for sludge recovery and is characterized ... More economical clarifier due to its circular shape and flat bottom design Efficient sludge recovery system well suited to large structures: due to a larger number of suction tubes ... Clarification by central drive with diametral sludge collection. ... diametral suction - sludge recovery – SD clarifier...

The SUCCIR clarifier has a more complete sludge recovery device combining suction tubes centralized and tubes located on the radius. The floor has a double-slope improving the sludge collection ... Excellent treated water quality due to double suction system Shorter sludge contact time in the clarifier Constant & efficient sludge extraction due to high density of suction tubes ... Clarification by peripheral drive with radial & central sludge collection....

dry solids content is required (often in the region of 65%). Indeed, at this dry solids content, dried sludge has a net calorific value equivalent to that of household waste. Some projects are emerging ... Sludge treatment ... Sludge treatment Sludge drying Dewatered sludge Evaporis Heliantis ... sludge drying to an intermediate dry solids content ... Sludge dewatering...

The SV clarifier is a flat bottom structure. The sludge settles at the bottom of the device and is suctioned (by level difference) by vertical tubes located along a radius to a trough from which ... More economical clarifier due to its circular shape and flat bottom design Shorter sludge contact time: peripheral sludge suction prevents excessive contact time Limited maintenance ... Clarification by peripheral drive with radial sludge collection....

The PrimagreenTM is a primary filtration system on a continuous belt (metallic filter). PrimagreenTM can treat sludge from the secondary clarifier or from Greendaf MW too. Primagreen ... performances as settler Fully automated for easy operation Adaptation of load variations (good adaptability for tourist areas) Avoiding thickening stage due to high sludge dryness ... A compact solution to reduce sludge treatment line....

Developed to take advantage of the different properties of lime (sanitization, reduction of odors), Deshydris® Lime is used at the end of the sludge treatment process. The biosolids, thanks ... Sludge treatment ... Sludge dewatering Sludge treatment Dehydris Lime ... Biological stability of the produced biosolids (due to very homogeneous sludge-lime mix) Granular structure of the final product means that accumulations hold their form Lower operating ... Deshydris® Lime, pre-liming for sludge with centrifugation, is suited to the dewatering of all type of sludge, fresh or digested from urban wastewater treatment and to any size plant. ... advanced dewatering of sludge by pre-liming before centrifugation – Deshydris® Lime ... Sludge dewatering...