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[...]MBR Package Plant for Sewage Treatment – From Sewage to Pure Irrigation Water A membrane bioreactor (MBR) is a wastewater treatment process combining membrane filtration with biological treatment. This innovative technology offers several advantages compared with the conventionally activated sludge process. Among these advantages are higher biomass concentration, eliminating the needs of secondary clarifiers and improved effluent quality. MENA-Water package plants transform sewage to clear and high quality water. The small footprint of the treatment technology enables the systems to be integrated in natural, picturesque surroundings and to treat wastewater for irrigation use. Design and Function MENA-Water offers complete MBR package plants, pre-assembled as containerized system (ISO sizes). This facilitates easy transportation, fast availability and straight start-up of the MBR plant. Included inside the package housing are all main components such as: Stainless steel membrane tank with modules and aeration system Blowers for aeration tank and membrane scouring Permeate pump, backwash and disinfection system Process instrumentation, electrical control cabinet with PLC For optimized performance of the entire plant, all necessary equipment for installation in the external structures is included in our scope of supply: Equipment for lifting station and mechanical pre-treatment Diffusers, pumps, mixers for biological treatment Equipment for sludge treatment, grit and clean water pumping If desired, MENA-Water provides comprehensive support for installation, start-up and maintenance activities and can consult anytime via remote monitoring from back office. Beyond our MBR scope of supply, we can also offer solutions for further plant equipment such as: Sludge treatment Odor control Mobile power generator Containerized operator room MENA-Water MBR package plants are capable to handle a wide range of capacities, starting from a daily throughput of a few cubic meters, reaching to some thousands of cubic meters per day. Our plants can be arranged custom-fit to serve your desired wastewater application. Applications of the MENA-Water MBR sewage treatment plants Common municipal sewage treatment Independent sewage treatment system for stand-alone operation (hotels / business areas / housing complexes etc.) Sanitation solution for outlying locations Sanitation solution for close and densely populated residential areas due to minimized smell, dirt and footprint Process step for industrial wastewater treatment Pre-treatment step for reverse osmosis plants Benefits of the MENA-Water MBR sewage treatment plants Well-proven, complete and clean system solution Compact footprint combined with convenient accessibility Minimum works for site installation and civil structures Full automatic system operation with online monitoring facility Adaptable to future demand due to modular system[...]

[...]Energy recovery from wastewater Modular design Developed for use with all types of wastewater Not easily affected by coarse and floating material Odour-tight Low maintenance requirements Self-cleaning Right below the ground, in sewers, is a hidden and seldom used source of energy: our wastewater. Generally the temperature of sewage is in the range of 12 to 20 °C. Even during winter the wastewater temperature never drops below 10 °C, or only for a few days. This makes wastewater an excellent heat source for the operation of heat pumps. As a link between the wastewater and heat pump, a heat exchanger is required to extract the heat energy contained within the wastewater: The HUBER Heat Exchanger RoWin transfers the thermal energy from the wastewater to the heat pump. Up to 80% of the useful heat can be recovered from the wastewater and utilized economically. Utilisation of wastewater as a heat source is especially suitable to be applied in large buildings, such as nursing homes, hospitals, schools or swimming baths. It is also possible to recover heat from the effluent of sewage treatment plants and use it e.g. for sludge drying. Design and Function The HUBER Heat Exchanger RoWin consists of a welded stainless steel construction in which horizontal pipe modules are arranged in parallel. The pipe modules are made of stainless steel to achieve maximum heat transfer efficiency. The pre-screened wastewater flows through the heat exchanger and, via the compactly arranged pipes, gives off its thermal energy to the cooling water. The energy for the heat pump is supplied through the heated cooling medium. Due to the specific chemical-biological properties of wastewater a biofilm is developed over time on the heat transfer surfaces that significantly impairs heat transfer. Preventive cleaning of the heat transfer surfaces with an innovative, fully automatic cleaning mechanism therefore is applied to ensure the maximum heat transfer capacity is permanently maintained. Sediments and solids settling on the tank floor are removed by a screw conveyor and returned to the sewer along with the cooled wastewater. Due to the enclosed tank design and return of solids thermal energy is the only emission from wastewater. The HUBER Heat Exchanger RoWin is available, as required, with an outer insulation for particularly exposed sites. Installed above ground, the system offers the benefits of easy maintenance and operation. Due to its modular design the HUBER Heat Exchanger RoWin can be tailored to suit specific site requirements. In combination with a heat pump up to several hundred kilowatts of thermal output can be generated, depending on the unit size. With the optimal combination of both systems municipalities or industrial enterprises can cover up to 80 % of the heat required from wastewater as energy source. Version for Concrete Tank and Channel Installation: HUBER Heat Exchanger RoWin C The HUBER Heat Exchanger RoWin C can be used for installation in the outlet of the wastewater treatment plant or in buffer tanks. Installed directly in the wastewater flow, the heat exchanger modules are optimally surrounded by the flow. Due to the biological processes taking place, the temperature of effluents from sewage treatment plants is on average by 1 K higher than the inlet temperature. Furthermore, higher amounts of thermal energy can be extracted from WWTP effluents than with heat recovery plants installed in sewer systems. The biological processes in the sewage treatment plant are not impaired and the introduction of the cool WWTP effluent outlet is beneficial for the flowing water biology. In addition, temperature and oxygen conditions in the waters are significantly improved. If installed in the channel, no additional pumps are required as the wastewater flow normally runs off by gravity. This avoids costs and significantly improves the economic efficiency of such plants. Especially with regard to the energetic rehabilitation of wastewater treatment plants, the HUBER Heat Exchanger RoWin can make a decisive contribution. Due to its compact design and installation in a channel or tank, no additional installation space is required and the available space utilised at an optimum. But biofilm growing on the heat exchanger surfaces cannot completely be ruled out with the use of the WWTP effluent. Integrated cleaning of the heat transfer surfaces therefore is of great importance to continuously maintain the maximum heat transfer capacity. Several HUBER Heat Exchanger RoWin C units can be installed in parallel or in series for perfect adjustment to specific site conditions and customer requirements. Combined with load-bearing covers the units can also be installed under parking areas for example. The Benefits of the HUBER Heat Exchanger RoWin and RoWin C Compact, enclosed tank design Continuous maximum heat transfer capacity Stable hydraulic conditions Fully automatic operation, minimum maintenance requirements Unsusceptible to grease, floating and coarse material Automatic removal of sediments Modular design for tailored solutions that meet the customer’s specific requirements Various possible applications in both the municipal and industrial field[...]

[...]Chemicals dosing is optimal if the flotation system constantly achieves the required performance without overdosing of chemicals and unnecessarily increasing operating costs. In practice, it proves to be difficult to adjust the chemicals dose due to varying volumes and freights. Large-dimensioned mixing and balancing tanks are beneficial but can frequently not be installed due to lack of space. Besides, the investments costs are high for the tanks and the accessory equipment required, such as circulation pumps and aeration systems for homogenisation. The innovative HUBER Chemicals Dosing DIGIT-DOSE allows optimal dosing of the chemicals even with small mixing and balancing tanks. The specially developed system uses a combination of several measuring principles and constantly determines the optimal chemicals dose in real time. A cyclically operating cleaning system ensures the constant availability of the installed measuring technology. Chemicals consumption, and therefore also operating costs, are reduced to a minimum. Additional positive effects can be seen in the volume of flotate sludge generated, a main cost factor of flotation plants for utilisation and disposal. Furthermore, DIGIT-DOSE makes life easier for the operating staff as the system adjusts automatically to varying wastewater parameters without the need for any manual intervention. Design and Function Precipitation: Transformation of dissolved pollutants into removable solids. Neutralisation: Neutralisation of the wastewater mixture through addition of neutralisers, automatic pH regulation. Flocculation: Generation of large and strong flocs by polymer addition. Flotation: Addition of micro bubbles for flotation of the micro flocs, mechanical removal of the concentrated sludge layer and separation of the solids-free clear water phase. Applications of the HUBER Chemicals Dosing DIGIT-DOSE Slaughterhouses and meat processing industry Dairies and cheese dairies Food companies Tanneries Animal rendering plants General pre-treatment by flotation for highly varying wastewater compositions Suitable also for retrofitting existing HUBER HDF installations! The HUBER Chemicals Dosing DIGIT-DOSE System Benefits Up to 30% reduction in chemicals consumption Support and relief for operating staff Up to 20% reduced flotate sludge volumes Production of hydroxide sludge resulting from overdosing of precipitants is effectively avoided Integrated automatic cleaning of the measuring equipment used Low investments costs and space requirements for mixing and balancing tanks Return on investment within few months Optimized use of chemicals due to the intelligent and permanent dose regulation reduces the amount of flotate sludge. Beside the operating costs for chemicals, disposal costs for flotate sludge are another main cost factor. The investment costs for the HUBER Chemicals Dosing DIGIT-DOSE pay off for plant operators within a very short time due to the significantly reduced operating costs. Existing plants retrofitted with DIGIT-DOSE have shown that the ROI (Return on Investment) can be achieved within only one year. If HUBER DIGIT-DOSE is considered and included already in the project engineering phase, the size of mixing and balancing tanks can be reduced to the minimum. Any load variations still present can then reliably be managed with the freight-controlled chemicals dosing solution without any negative effects on operating costs and/or plant efficiency.[...]

[...]Flotation plant HDF S for high solids loads Flat construction with a large water surface of up to 160 m³/h Simple, reliable saturation system using a multiphase pump Machines can be mounted in standard containers as mobile units Suitable for high solids loads and for activated sludge separation as an alternative to conventional secondary clarification Up to 30% operating costs saving when combined with a DIGIT-DOSE Chemicals Dosing system Principle of Flotation: During dissolved air flotation, very fine gas bubbles of 20 ‒ 40 μm are released, which together with the particles present in the wastewater, form an agglomerate. This agglomerate has a lower density than water and rises to the water surface. Nonfloatable particles are separated via conical selection chambers. The particle-free clear water passes through an immersion wall and is then available for further use. If a tube flocculator is installed upstream of the flotation plant, so-called precipitants and flocculants can be added, which improve the clarification performance accordingly. Design and Function HUBER Dissolved Air Flotation Plant HDF S for the treatment of heavily polluted wastewater In addition to the compact HUBER Dissolved Air Flotation Plant HDF with a separation zone of more than one metre, there is a flat flotation system with a reduced separation zone but larger water surface, the HUBER Dissolved Air Flotation Plant HDF S. The letter ‘S’ stands for sludge, as the plant is able to separate very voluminous and highly contaminated wastewater and sludge in a defined way. Maximum performance is ensured by a very large water surface for reliable flotation and a flow-optimised design of the tank. The contact zone between wastewater and saturated water is followed by a defined flow over the entire width of the tank. The sludge particles can thus rise to the water surface as required. There, they are additionally thickened with special scraper joists and then removed with a chain scraper in the direction opposite to the direction of the flow. Remaining sediment and heavy materials are automatically discharged via several funnelshaped sediment outlets. The efficiency of the saturation system is greatly increased in these plants in order to meet the requirements caused by higher wastewater loads. The main field of application of the HUBER Dissolved Air Flotation Plant HDF S is heavily polluted industrial wastewater and the separation of activated sludge as relief or alternatively as replacement for a secondary clarifier.[...]

[...]Versatile wastewater treatment for numerous industrial applications Compact and modular design for throughputs up to 300 m³/h Simple, reliable saturation system using a multiphase pump Low space requirement due to an integrated lamella separator Suitable for the pre-treatment of industrial wastewater or secondary treatment of municipal wastewater Very high reduction rates for COD, solids and phosphate Combined with a DIGIT-DOSE Chemicals Dosing system up to 30% less operating costs Principle of Flotation: During dissolved air flotation, very fine gas bubbles of 20 ‒ 40 μm are released, which together with the particles present in the wastewater, form an agglomerate. This agglomerate has a lower density than water and rises to the water surface. Nonfloatable particles are separated via conical selection chambers. The particle-free clear water passes through an immersion wall and is then available for further use. If a tube flocculator is installed upstream of the flotation plant, so-called precipitants and flocculants can be added, which improve the clarification performance accordingly. Functional description of the HUBER Dissolved Air Flotation Plant HDF The (waste) water to be treated enters the flotation plant via the tube feeder (1) and is directly mixed with the released pressure water (white water). The micro bubbles (20 ‒ 40 μm dia.) generated when the pressure is suddenly released are brought into close contact with the suspended material in a tube feeder (special pipe-in-pipe system) (14). The gas bubbles attach to the surface of solids. Due to their increased buoyancy, the light aggregates of solids and air bubbles float to the water surface. The blended influent flows upward into the tank of the dissolved air flotation unit where it is evenly distributed over the total tank width. The laminar flow conditions ensure optimum phase separation. The solids/gas flocs rise to the water surface where they form a scum (or flotate) layer that is skimmed off into the flotate hopper (3) by a scraper (2). The scraper joists with their special design dewater the flotate additionally. The flotate is either collected in a container or by an eccentric screw pump delivered to further treatment stages (e.g. sludge dewatering with HUBER Screw Press Q-PRESS) (15). The non-clogging lamella separator (5) increases the effective clarifier area, for maximum hydraulic loads on a small footprint. While the water flows down through the gaps between the inclined lamella plates, buoying flocs rise a short distance and attach at the lower surface of the upper lamella and dense particles sink a short distance to the upper surface of the lower lamella. The lamellae retain thin layers until they are grown into thick and compact layers that finally detach from the surface and slide quickly up or down along the lamella surface. Detached light aggregates slide up and rise to the water surface where they form a floating scum layer. Heavy sludge aggregates slide and sink down to the bottom of the tank into the sediment hopper (6) from where they are either removed by an eccentric screw pump or gravity discharged by means of a pneumatically controlled valve. The clarified wastewater flows behind the baffle plate (7) to an effluent box (8) from where the water falls over a height-adjustable weir into the clarified water outlet (9). Up to 30 % of the effluent is recirculated for the generation of pressure water. A multi-stage centrifugal pump (10) generates a pressure of about 6 bar. In this process, air is introduced into the pump impeller housing and intensively mixed with the water. This pressurized water flows through the pressurized water line (12) to the pressure relief valve of the tank. There, the micro bubbles with a diameter of 20 to 40 microns are generated through pressure relief (13) to ambient pressure. In the tube feeder (14), the micro bubbles thoroughly blend with the influent to be treated so that all solids get in close contact with a sufficient number of micro bubbles. Increased separation efficiency through pre-treatment in a chemical treatment stage Individual project-specific tube flocculator for optimal chemicals dosing Ideal admixture of chemicals due to a flow-optimised design Compact unit directly beside the HUBER Dissolved Air Flotation Plant HDF Accommodating individual preferences for sampling / dosing points / measurement instrumentation Optional integration of the innovative HUBER Chemicals Dosing DIGIT-DOSE for an automatically optimal chemicals dose in real time. Applications of Dissolved Air Flotation HUBER Dissolved Air Flotation Plant HDF units are used for a wide variety of industrial and municipal applications, such as: Slaughter houses Meat processing and packing Fish processing Dairies Convenience food production Gastronomy Disposal companies Soap works Land remediation Chemical industry Petro chemical industry Iron and steel industry Leather & textile industry Cosmetics industry Galvanizing, electroplating Municipal wastewater treatment Activated sludge separation Phosphate after treatment plants Rendering plants Applications HUBER Dissolved Air Flotation Plant HDF units are used for a wide variety of industrial and municipal applications, such as: Slaughter houses Meat processing and packing Fish processing Dairies Convenience food production Gastronomy Disposal companies Soap works Land remediation Chemical industry Petro chemical industry Iron and steel industry Leather & textile industry Cosmetics industry Galvanizing, electroplating Municipal wastewater treatment Activated sludge separation Phosphate after treatment plants Rendering plants[...]

[...]Separation of grit from Wastewater treatment plants and sewer systems Road refuse and oil grit Industrial applications Washout and separation of all coarse material bigger than the perforated plate separation size of the drum. Design and function HUBER Wash Drum RoSF9 for separation of grit from WWTPs and sewer systems, road refuse and oil grit: While wash water is added to pre-wash and homogenise the raw material within the HUBER Wash Drum RoSF9, the perforated plate of the Wash Drum retains all particles bigger than the perforation, which are dewatered and then discharged into a skip. Since only coarse material bigger than the separation is separated, the volume of the resultant residues is vastly reduced with virtually the complete mineral material being further treated in the down-stream HUBER Coanda Grit Washer RoSF4 . The resultant coarse material can then be further separated into a mineral and organic fraction by means of a coarse material washer. Benefits of the HUBER Wash Drum RoSF9 High solids throughput even with problematic material (tresses, grease, stones) High hydraulic capacity even with high solids contents Defined separation size due to two-dimensional screening Solids throughput up to 6 m³/h Completely encased unit Insensitive to coarse material Screened wastewater can be used as wash water Minimum wear, reduced maintenance Compact, space-saving design Low energy demand High corrosion resistance[...]

[...]Classifying and washing in one system Reduced disposal costs Low investment costs Over 90% separation efficiency of grain size > 0.2 mm Reduction of organic content to < 5% Also suitable for classified grit trap material from biogas plants The Grit Washer RoSF G4E combines continuous separation and washout of contaminated grit trap material in one plant. Design and function Grit classifying Sediments from the grit trap are introduced in the upper part of the plant as a mixture of grit, organics and water. Due to the low surface overflow rate virtually all particles are separated and accumulate in the bottom part of the tank. Grit washing Due to the introduction of service water in combination with a slowly rotating circulation system the lighter organic particles can easily be separated from the dense mineral particles in the bottom part of the tank. After removal of the organic material the clean grit is auto-matically removed by a screw conveyor, at the same time statically dewatered, and discharged into a container. The removed organics are continuously discharged with the introduced wash water. The benefits of the HUBER Grit Washer RoSF G4E Reduced disposal costs Reduced water consumption below 2 m3/h Surface overflow rate < 25 m/h 90% separation efficiency of grain size > 0.2 mm Reduction of organic content to ≤ 5 % Dry residue in washed grit > 90% Screened wastewater can be used as wash water Two plant sizes available (8 l/s and 16 l/s throughput) Optionally available as a classifier with wash function Also suitable for classified grit trap material from biogas plants[...]

[...]Contact Drying of Sewage Sludge Partial drying of sewage sludge for recycling in fluidized bed incineration plants. Water evaporation per dryer: 2 to 6 t/h Dewatered sludge throughput per dryer: 6 to 12 t/h * DR throughput capacity per dryer: 1.5 to 6.0 t/h * Heating medium: Saturated steam up to 10 bar(a) * dependent on inlet and outlet DR Thermal drying of sewage sludge is an indispensable process component to ensure the sewage sludge has the right dry residue. The subsequent mono-incineration of the sewage sludge achieves an enormous reduction in volume and mass and provides for the recovery of phosphorus. Design and Function The HUBER Disc Dryer RotaDry® is designed for homogeneous partial drying of dewatered sewage sludge. Due to its compact design and high specific water evaporation, it is not only ideally suited for use in new sewage sludge mono-incineration plants, but also for capacity expansions of existing plants. The dryer can dry exactly to the required DR content and thus enable a selfsustaining combustion in the fluidized bed incinerator. The HUBER RotaDry® is available in different sizes, so that a water evaporation of about two to six tons per hour and dryer can be achieved. By using different disc diameters and numbers of discs, the heating surface can be optimally adapted to the amount of generated sludge and the dryer can be operated in the ideal capacity range. The heat requires for drying is provided and, depending on the size of the plant, electricity is also generated by means of steam turbine. A reliable condensate removal system , an innovative concept for moisture control, an optimized feed and a steam control line with minimized pressure loss characterize the HUBER Disc Dryer RotaDry® as the perfect sewage sludge dryer in combination with a monoincineration plant. All dryers are optionally available with jacket heating. Vapour condensation The overall dryer system always includes the condensation of the vapours produced by the disc dryer. Depending on the project-specific conditions, there are various possibilities here. Tube bundle condenser (indirect condenser) Compact design to maximise the extraction steam for district heating, as heating water is raised to the required temperature level directly in the condenser. Injection condenser (direct condenser) Circulating and cooled vapour condensate is sprayed in the head of the condenser to knock down the condensable vapours. Robust and universal design. Multi-stage condensation system Consisting, for example, of a sludge preheater (for energy optimization and polymer consumption reduction in the dewatering process) and an injection condenser as residual condenser. Ease of maintenance disc dryer Maximum reduction of the activities during walkarounds The main rotor bearings and the discharge screw bearings are supplied with automatic grease lubrication. Highly efficient direct drive with peripheral speed adjustment capability. Wear-optimised driving style and startup under load possible. Discharge screw is easily accessible and removable for replacing wear plates and screw spiral. The benefits of the HUBER Disc Dryer RotaDry® Compact design The HUBER Disc Dryer RotaDry® convinces by its compact design, which allows the dryer to be installed even on a small footprint or to be integrated into existing plants. Proven and durable technology The many years of successful use of disc dryers in combination with sewage sludge incineration plants demonstrate the robust technology of the process. High specific water evaporation capacity By heating the rotor discs and optionally the jacket, a high volume-specific water evaporation can be achieved. Competent partner Thanks to the cooperation between HUBER and OESTERGAARD, the customer is offered the best possible solution, both in terms of process and design. Maintenance-friendly dryer Minimal effort for operating personnel thanks to automatic grease lubrication and low-maintenance direct drive. Extended service life By using a special welded construction for the discs, the minimum permissible residual wall thickness can be reduced. The service life of the rotor is thus extended to a maximum. Control concept adapted to mono-incineration plants In the event of fluctuating sludge quality, the DR measured online can be included in the control. Secure condensate drainage Reliable condensate drainage from the discs due to the omission of a syphon pipe.[...]

[...]Belt filter press for municipal and industrial sludge High-performance belt filter press for best dewatering results Combi-unit: thickening and dewatering in one working process Feed capacity up to 1000 kgDR/h Three sizes available Versatile sludge press High efficiency (low polymer and power consumption) High capacity (due to extended predewatering zone) Application-optimized design Can be combined with the HUBER Belt Thickener DrainBelt unit to further increase capacity The Machines – Design and Function HUBER Bogenpress B-PRESS A new, extended high-performance pre-dewatering zone with chicanes, the bow zone, plus two perforated dewatering rolls ensure optimal pre-treatment and compaction of the flocculated sludge so that it can be exposed to maximum pressure in the following high pressure zone which is equipped with press rolls decreasing in diameter (4, 6, 8, or 10 rolls). This process guarantees highest dewatering results. The machine is equipped with detachable covers to provide easy access to moving machine parts. HUBER Bogenpress B-PRESS BS Combi The BS Combi version has a belt thickener ( HUBER Belt Thickener DrainBelt ) mounted on the actual Bogenpress. The sludge is at first pre-thickened on the belt thickener prior to passing through the dewatering zones of the Bogenpress. The combination system is able to handle up to 80 m³/h. Another advantage of the system is that coagulant agent addition is required only once for both the thickening and dewatering process.[...]

[...]Dewatering of municipal and industrial sludges Compact, enclosed design Efficient, reliable, automated operation Low operation costs Sturdy, long-life stainless steel sludge dewatering unit Feed capacity up to 500 kgDR/h Two sizes available Extremely sturdy design Especially suitable for industrial sludges Well-proven in hundreds of installations Virtually noiseless operation Design and Function Liquid sludge is flocculated with polymer and pumped into a flocculation reactor where big solid flocks are produced. The flocculated sludge flows into up to two machines installed in parallel. The Screw Press consists in an inclined 0.25 mm wedge wire basket. The free water drains through the basket whilst the solids are retained inside the basket and conveyed gently upwards through the inclined basket by a slowly rotating screw. Continuous dewatering of the sludge takes place in the Screw Press with an increasing build-up of pressure due to the conical basket, which reduces the sludge cake volume in the press zone. The filtration pressure inside the machine is adjustable by means of a pressure cone in the sludge discharge. Brush elements on the screw flights clean the basket from the inside and rotating spray nozzle bars backwash it periodically from the outside. The Benefits of HUBER Screw Press S-PRESS Sludge volume and mass reduction up to 90 % Insensitive to coarse material, designed for high solids loads Minimum wear because of < 5 rpm screw rotation speed Low power and water consumption Automated operation Low maintenance requirements, no need for lubrication Low operation costs Completely encapsulated, odour-free plant Low noise < 68 dB(A) No vibration Pneumatically controlled pressure cone system Extra sturdy design for industrial applications More than 700 successful installations worldwide[...]