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sludge processing Applications

  • Ozone Water Treatment for Activated Sludge Process Plants

    Ozone breaks up filaments and improves settling characteristics of the sludge... Filamentous sludge is a common problem at activated sludge plants. With ozonation of the return sludge flow it is possible to reduced the amount of filamentous bacteria in the sludge and significantly increased the settling properties of the sludge.This in turn means better performance of the activated sludge process. When a bioreactor is connected to the sludge line the removal of the damaging filamentous bacteria means higher quality sludge in the bioreactor, which leads to higher biogas production.

    By Primozone Production AB based in Löddeköpinge, SWEDEN.

  • Sludge dewatering and water recovery from sand and aggregate washing processes

    Bilfinger Water Technologies designs and builds complete water recovery and slurry dewatering systems for sand and aggregate washing plants. These high-performance systems minimize water usage and solid disposal problems.

    By Bilfinger Water Technologies GmbH based in Aarbergen, GERMANY.

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    Metal Sludge

    Grinding-swarf from the metal processing industry may contain metal alloys, stainless-steel and high-alloyed steel, all of which are ideal input-materials VacuDry® unit. The absence of oxygen in the VacuDry® process prevents any changes in the chemical structure of the oil, emulsions or metals during the treatment. The output material can later be sold at high prices. Find more information and the benefits of VacuDry® metal sludge plants on

    By econ industries GmbH based in Starnberg, GERMANY.

  • Wastewater treatment for the sludge treatment

    The most used techniques to reduce sludge water content include physical-chemical processes, such as flottation or the use of mechanical systems, such as press filters.

    By Aguambiente based in La Cistérniga, SPAIN.

  • Thickening and dewatering of sludges for water and wastewater industry

    Both economic and ecological demands make maximum dewatering of sludge a most crucial step in the process flow, especially for the pulp and paper industry with their large quantities of sludge to handle. A highest possible dry content of dewatered sludge minimizes weight and volume, hence achieving the following objectives: reduction of transport and disposal cost. high heating value for incineration without additional fuel. With the sludge dewatering systems including both AKSE S disc thickener and AKUPRESS BX screw press BELLMER KUFFERATH Machinery offers plant and equipment able to dewater structured sludges to maximum dry contents.

    By BELLMER KUFFERATH Machinery GmbH based in Düren, GERMANY.

  • Installations for sludge dewatering for municipality industry

    The dewatering phases in municipal processes are basically of biological sludge originated from purification processes. Bilfinger Water Technologies has realized many complete installations of sludge purification regarding the processes of water purification, purification of waste waters and SUW (solid urban waste) treatment.

    By Bilfinger Water Technologies GmbH based in Aarbergen, GERMANY.

  • Wastewater treatment solutions for anaerobic sludge digestion sector

    Anaerobic digestion is a series of processes in which microorganisms break down biodegradable material in the absence of oxygen, used for industrial or domestic purposes to manage waste and/or to release energy. It is widely used as part of the process to treat wastewater, like Upflow Anaerobic Sludge Blanket (UASB) reactors. As part of an integrated waste management system, anaerobic digestion reduces the emission of landfill gas into the atmosphere. Anaerobic digestion is widely used as a renewable energy source because the process produces a methane and carbon dioxide rich biogas suitable for energy production, helping to replace fossil fuels. The nutrient-rich digestate which is also produced can be used as fertilizer. The digestion process begins with bacterial hydrolysis of the input materials in order to break down insoluble organic polymers such as carbohydrates and make them available for other bacteria. Acidogenic bacteria then convert the sugars and amino acids into carbon dioxide, hydrogen, ammonia, and organic acids. Acetogenic bacteria then convert these resulting organic acids into acetic acid, along with additional ammonia, hydrogen, and carbon dioxide. Finally, methanogens convert these products to methane and carbon dioxide.

    By QM Environmental Services Ltd. based in The Hague, NETHERLANDS.

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    Municipal wastewater solutions for thickening industry

    WesTech thickeners are an excellent choice prior to digestion. Although gravity thickening has long been successful, Dissolved Air Flotation (DAF) thickening has several process and sizing advantages, especially for BNR applications.

    By WesTech Engineering, Inc. based in Salt Lake City, UTAH (USA).

  • Enhanced Biosolids and Bio Sludge Dewatering with Wilsa EWC

    IMPROVED BIOSOLIDS/ BIO SLUDGE DEWATERING WITH WILSA® CONDITIONING The WILSA ElectroWave™ effect can be used to condition polar fluids to alter their physical properties, improving several chemical and physical processes. - Reducing surface tension to improve the ability of water to repel solids - break physical / chemical emulsions - Increasing the contact angle of water - improve coalescing of solid particulate toaccelerate phase separation - Lowering the viscosity of water - reduce friction of flocculated solids dropping through less viscous water - Lower viscosity, reduced surface tension and increased contact angle of water - improve aeration of wastewater Installation of WILSA® ElectroWave Conditioner upstream of a belt press at a wastewater treatment plant resulted in polymer usage dropping by >50% while achieving much dryer solids.

    By Hudson Industries based in Vienna, OHIO (USA).

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    Albin peristaltic`s pumps for mineral processing

    Pumping / transfert sludge with viscosity up to 60 000 Cps, clay up to 800 g/l, particle size 30mm, lead sulfate, pyrite, SABX, cyanide, various acids.

    By Albin Pump SAS based in Goteborg, SWEDEN.

  • Process Belt Meshes for Dewatering / Pressing with Belt Presses

    WEAVEinMotion process belts are effective and robust cores for belt presses which are particularly efficiently acting systems for dewatering sludges and fruit mashes. A decrease in transport, disposal and recycling costs is obtained thanks to the reduction in volume achieved.

    By GKD - Gebr. Kufferath AG based in Düren, GERMANY.

  • Waste water respirometry solutions for process optimisation

    Respiration rate of activated sludge has been recognised as a key controlling element in the modelling of process control, by the International Water Association Task Group. Actual respiration rate of the sludge in the aeration tanks, as well as the endogenous and maximum respiration rates are variables that indicate the rate of BOD removal and aeration requirements. The maximum respiration rate is also closely linked to the Critical Oxygen Concentration point, that is, the point at which diffusion over the bacterial cell walls ceases and therefore biodegradation is significantly compromised.

    By Strathkelvin Instruments Ltd. based in Motherwell, UNITED KINGDOM.

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    Hydrocyclones for automotive applications

    Krebs cyclones are used in automotive and large vehicle plants. Krebs cyclones improve the cleaning process prior to painting by separating the paint weld balls, metallic particles, oils, grease and phosphate sludge from the cleaning solution.

    By FLSmidth KREBS based in Tucson, ARIZONA (USA).

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    Hazardous waste treatment solutions for metal industry

    Sludge by-products from the metalworking industry have a high potential for recycling. Prolonged grinding processes can generate large amounts of highly valuable, alloy-rich sludge; consisting of metal powder and cooling lubricants. Inside our VacuDry system, the thermal separation of the liquids (hydrocarbons, eventually water) and solids (metal powder) takes place in an oxygen free atmosphere. This absence of oxygen ultimately eliminates material degradation by oxidation, and self-ignition or explosion risks. Operation under a low vacuum ensures the possibility to recover the cooling lubricants for later reuse. After the thermal treatment, for appropriate handling in the melting process, the metal powder is pressed into briquettes. With the econ VacuDry technology, 100% recycling of all ingredients is possible.

    By econ industries GmbH based in Starnberg, GERMANY.

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    Applications and Air Pollutants Removed in Hazardous, Solid and Liquid Waste Treatment Operations

    Venturi scrubbers with FORCE FLUX Condensation technology and Wet Electrostatic Precipitators for industrial, municipal, sewage sludge and pathological waste incinerators to remove micron, submicron particulate, heavy metals and acid gases. Special quencher/scrubber systems for dioxin removal. HCL scrubbing from PVC plastic waste burning. Fine particulate, acid gases and NOx removal on munitions destruction. Cleanup of all pollutants from liquid waste incinerators and other high temperature destruction processes. Acid and particulate emissions from electronic board and metals recovery operations.

    By Bionomic Industries Inc. based in Mahwah, NEW JERSEY (USA).

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    Treatment, Optimization and Design for WWTP's

    The purpose of the work is to demonstrate the rationale, procedures and advantages of using process simulation to evaluate the steps involved in process upgrades from conventional or fully aerobic process conditions to multi stage systems capable of operating as a BNR system. In the author's experience and the conclusions of this presentation are that the use of these systems in daily operations and in the preparation for process upgrading is empowering and economically advantageous. SASSPRO(Steady State Activated Sludge Simulator, Program)

    By LLC based in Sahuarita, ARIZONA (USA).

  • Wilsa ElectroWaveTM - Oil Harvesting / Removal

    WILSA Harvests Oil from Tank Bottom Sludge at Disposal Well. ElectroWave™ Technology optimizes onsite processing and reduces costs associated with saltwater disposal operations by breaking waste emulsions and recovering additional oil.

    By Hudson Industries based in Vienna, OHIO (USA).

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    Wastewater Treatment for the Bioenergy Industry

    The waste (water) streams from the production of (bio) ethanol or ethanol spirits are generally very suitable for anaerobic treatment, due to their organic compounds. 

    The effluent streams produced by the different production processes are influences by a great number of parameters such as, process design, milling process, type of raw material, etc. This requires special attention in the design of the treatment plant for this type of industry. 

    Typical streams from these industries that can be treated are, whole stillage, thin stillage, spent wash, vinasse and condensate from evaporator. The Upflow Anaerobic Sludge Blanket (UASB) process and the External Circulation Sludge Bed (ECSB) process from HydroThane are worldwide proven processes for the treatment of this type of waste water.

    By HydroThane STP BV based in KC `s Hertogenbosch, NETHERLANDS.

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    Centrifuges for Industrial Waste Water, Minerals and Oil

    Residues containing oil are created wherever oil is extracted or processed. Flottweg decanters, Tricanter, separators and systems offer an environmentally friendly solution to the following applications in the processing industry: Processing of sand washing water and gravel wash water. Cleaning wastewater and exhaust gases in steelworks. Cleaning and processing of tar in coking plants. Processing of wastewater containing oil. Processing of oil sludge from ponds and lagoons. Processing of residues containing oil from the cleaning of crude oil tanks. Processing of drilling slurry, drilling emulsion and drilling muds. Processing of ore and minerals.

    By Flottweg SE based in Vilsbiburg, GERMANY.

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