Sludge treatment ... introduction Following on from chapter Liquid sludge treatment that was devoted to processes applied to liquid sludge (stabilisation and dewatering), this chapter now describes all dewatered ... Dewatered sludge treatment ... Sludge dewatering...

When a sample of sewage fresh mixed sludge is subjected to a 2,000 g centrifugal field for a few minutes in a laboratory centrifuge, we will find the following in the centrifuge pot (figure 29 ... Sludge treatment ... Centrifugation Sludge treatment ... sludge centrifugation suitability...

The sludge produced is predominantly biological requiring typical treatment, considering that the dyes used in textile industries now contain less and less heavy metal content. This sludge can even ... Sludge treatment ... Industrial effluent treatment Textile industry Sludge treatment Odour Control ... sludge treatment/odour control...

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...

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...

Digelis® TH is an boosted advanced digestion technology that reduces the sludge quantity by half after dewatering utilizing a preliminary process of thermal hydrolysis of biological or mixed sludge ... Sludge treatment ... Sludge treatment Sludge digestion Biogas Digelis ... Ability to double digester capacity in existing installations Reduce the capacity needed for the final drying step Auto-Thermal reforming of biologically treated sludge Fully ... A process that halves the volume of sludge cake while boosting biogas production ... advanced digestion of biological or and mixed sludge by thermal hydrolysis – Digelis® TH...

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...

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...

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...

In general, the dryers used are based on those found in chemical, pharmaceutical and agri-food industries. These existing technologies have had to be adapted to properties specific to sludge. Heat ... Sludge treatment ... Sludge treatment Sludge drying Sludge dewatering Evaporis Heliantis ... Sludge dewatering...

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...

Drainis® GD (Grit Drainage) gravitates the flocculated polymer sludge through a screen (grid). Elastomeric scrapers push the sludge to the end of the screen. Its washing is automatic. The Drainis ... Sludge treatment ... GDD/GDE Sludge treatment Sludge thickening ... Drainis ® GD has a drainage screen with a progressive mesh size that optimizes Dynamic Sludge Thickening. ... direct thickening screen on biological sludge of different concentration – Drainis ® GD...

treatment phases in the same tank. key figure 60% less air needed compared to classic activated sludge treatment among references Burgos (Spain) - 150,000 m3/d Ourence (Spain) - 350 ... Sludge treatment ... Cleargreen Sludge treatment Sludge digestion Biological processes ... CLEARgreen® Sidestream is a deammonification allowing the treatment of concentrated ammonia caused by anaerobic digestion of sludge at the head of the station. ... specific treatment after anaerobic sludge digestion to remove nitrogen – CLEARgreen® Sidestream...

An efficient temperature regulation and an efficient sludge mixing are essential to the good operation of the digestors. Digelis® is adapted for the treatment of primary sludge, biological sludge ... Sludge treatment ... Sludge treatment Sludge digestion Digelis Methanisation Methanis ... Reduction of sludge quantity: 20 to 40% of dry matters Long-term sludge stabilization : nuisance reduction & sanitation Sludge recovery for green energy through biogas production which can ... The Digelis® is a 1 stage anaerobic digestion process for sludge coming from urban wastewater treatment plant. ...

and industrial wastewater sludge. key figures Reduce the downstream mechanical thickening equipment by a factor of 5 Reduce the number and size of other downstream equipment by a factor of 3 to 5 ... Sludge treatment ... Drainis Turbo Sludge treatment Sludge thickening ... Reduced polymer consumption due to stability of the sludge concentration A fully automatic process for just-in-time treatment without storage or labor intervention Limits greenhouse gas ... biological sludge thickening system including a preliminary concentration stage – Drainis® Turbo...