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[...]Shanghai, China Megacities and their problem with construction waste Example: Shanghai Beside Beijing and Hong Kong, Shanghai is one of the most important industrial locations and market places in the People’s Republic of China. In the recent years, the city has had a remarkable growth spurt. Fifty years ago, about seven million people were living in the metropolitan area Shanghai, today the city has more than 25 million inhabitants. Along with the city’s growth came innumerable building projects with huge amounts of construction waste and other waste products. More and more of such material inevitably ended up also in the sewer system where it settled and started to cause problems. As a preventive measure, the sediments in the sewers, such as debris and grit, are removed several times a year by suction trucks and transported to the sewage treatment works. But this procedure leads to batchwise overloading of machine components in the mechanical sewage treatment stage, such as screens or grit traps, which significantly impairs the function of these components. Ultimately, coarse particles end up in the primary clarifier with further negative impacts on the complete sewage treatment works. To avoid these problems, the raw material delivered by the suction trucks can be treated centrally in a decoupled grit treatment plant to remove undesired coarse particles, wash out the mineral fraction and discharge the pre-treated raw material into the inlet to the sewage treatment plant. This offers the plant operator several benefits: Reduced solids load within the sewage treatment plant Avoid operational problems caused by solids load peaks Reduced disposal volumes due to the organics being washed out from the raw material The fact that quite a number of such projects have been executed meanwhile in Shanghai proves that it makes perfectly sense for megacities to use external treatment systems. In Shanghai city alone, and within only five years, one or several such systems have been installed in each of the districts Pudong, Minhang, Yangpu, Chongming and Jinshan to reduce the loads on the sewage treatment plants. The concept of these projects is always based on the same principle: Continuous and dosed acceptance of raw material by a grabber and HUBER grit acceptance tank with integrated HUBER Grit Dosing Screw RoSF7 Coarse material separation and washout in a HUBER Wash Drum RoSF9 Grit washing in a HUBER Coanda Grit Washer RoSF4 Organics removal by a 2 mm screen (different types of screens are used for different specific local conditions) Removal of fine grit by a hydrocyclone Diverse conveying systems, such as HUBER Screw Conveyor Ro8 , etc Due to the enormous growth of many cities in China, but also in other countries like India for example, it is only a question of time until grit treatment will have to be considered as a solution also in these regions. With more than 20 years of experience in the treatment of external sewer grit and grit from sewage treatment plants, HUBER is the right partner for planning, executing and supporting in such projects.[...]

[...]Protecting technical facilities against flooding Both our rivers and watercourses and the technical drainage systems (sewers) can only absorb limited amounts of precipitation. Depending on the degree of sealing and other local conditions, flooding can then occur above a certain precipitation intensity. As climate change is causing more heavy rainfall, the probability of flooding is likely to increase in the future. A variety of flood prevention measures The best protection against flooding is to prevent situations of extreme flooding from occurring in the first place. Any measures that allow sufficient space for the water are of helpful here, since rivers need adequate floodplains and must not be technically constricted and straightened. Decentralised infiltration and deconstruction of sealed surfaces also help to reduce rainwater run-off into the sewage system. Technical flood protection Despite many efforts, it will not be possible to completely eliminate the risk of flooding in many regions. In these cases, however, it must be guaranteed that no people are endangered in the event of flooding and that damage to technical facilities is minimised. In addition, it must be ensured that important facilities such as of water supply and wastewater disposal can be maintained for as long as possible. For protection against flooding and backwater, we offer our flood-proof HUBER Manhole Covers as well as flood-proof technical doors for use in wastewater treatment plants, sewers, water supply systems, elevated reservoirs, manholes and buildings.[...]

[...]Using wastewater heat for heating and cooling buildings Wastewater heat recovery Use of wastewater as a sink for cooling buildings Sustainable building heating CO 2 -free heating and cooling The supply for heating buildings and for local and district heating networks is usually provided by combined heat and power plants in which fossil fuels are burnt. For economic and ecological reasons, fossil fuels are being reduced more and more. The temperature and heat potential in municipal and industrial wastewater offers the possibility of being utilized, provided that suitable and resistant heat exchanger technology such as the HUBER ThermWin system is applied. In addition, the ever increasing cooling demand in urban regions due to the effects of climate change can be solved by heat removal into the wastewater. Compared to wet cooling towers or air cooling units, wastewater heat exchangers offer many advantages in terms of operating costs and integration into the urban landscape. The HUBER Heat Exchanger RoWin has a unique self-cleaning feature to keep the heat transfer from the wastewater or into the wastewater constant at all times. HUBER products and solutions for your requirement Numerous applications and successfully completed installations in the fields of for heating and cooling buildings, combined with our many years of experience in solutions for water, wastewater and sludge, give you the security of getting an individual, efficient and reliable solution for your application. A comprehensive range of proven and well-coordinated products and solutions covers the typical requirements of these fields. For wastewater pretreatment upstream of the heat exchangers, the HUBER Pumping Stations Screen RoK4 or other screening systems are used, depending on the installation situation. For heat transfer from or into the wastewater, the HUBER Heat Exchanger RoWin is available. Efficient self-cleaning ensures constant heat transfer and thus safe and user-friendly operation. Different sizes and the modular design allow project-specific adaptation. Our solutions for your challenges: Heating and cooling with sewer water Heating with the sewage treatment plant effluent[...]

[...]Pulborough, UK Huber Technology completed the inlet screen upgrade at Pulborough STW, installing two HUBER Micro Strainer ROTAMAT® Ro9 / 700’s on an elevated inlet works. Project profile Working with BTU, Southern Water’s small projects delivery team, we looked at various options to replace the old worn out 25-mm Parkwood bar screen and screenings dewaterer. The P.E. for Pulborough was 8,352 and the consented FFT 62 l/s. Flows from the terminal pump station had been recorded up to 160 l/s and the existing screens were allowing unscreened influent into the balance to the storm tanks and the rags and other large items were blocking downstream pumps. 2x HUBER Micro Strainer ROTAMAT® Ro9 / 700 / 6 combined screens Control panels M&E installation Objective and solution The maximum size Ro9 / 700 was agreed and fitted to meet the maximum inflow of 160 l/s. It was also decided to fit two screens and remove the existing bypass bar screen. “ Working with BTU to delivery this project within budget and on time was a challenge for everyone. But, with good communication between BTU, Southern Water and Huber, the end result was a great success” commented Adrian Heneghan, HUBER Area Manager. Ricky Corkett, Southern Water site operator also commented that he was, “More than happy with the screens. Now I have time to work on other parts of the site and not have to worry about lifting and clearing pumps” . Media Gallery[...]

[...]Over the past ten years HUBER Screw Press units have become the worldwide leading products among the screw presses on the market. Numerous experiences with screw presses on almost thousand installations in various fields of application and long-term trust-based contacts to many plant operators result now in an extensive improvement in screw press efficiency. The new Q-PRESS® excels for several features: Axially dividable filter baskets are optionally available, they facilitate maintenance work significantly. Massive components, such as the screw shaft and some filter elements, can remain in the machine during inspections. Much less space and time is therefore required for maintenance. Even if non-dividable filter baskets are used space requirements for maintenance on the installation place are now reduced to the minimum that is necessary for machine operation and inspection. The outer surface of the cylindrical filter baskets has previously been cleaned by rotating the filter baskets along a stationary nozzle bar while the dewatering process has been interrupted. The new screw press provides the option of continuous dewatering without interruptions through a rotating washing system that rotates around the filter baskets. Dewatering degree and machine throughput are no longer influenced by interruptions or starts/stops of the washing systems. In contrast to many competitive machines the rotating washing system allows for independent cleaning of the filter surfaces of the inlet and press zone. In addition, the upper and lower filter halves can be cleaned separately so that only the contaminated filter surface sections are cleaned. Filter surface sections which have been cleaned cannot be contaminated again by wash water that runs down. This system significantly reduces the water demand for filter cleaning and additionally minimizes rewetting of the sludge cake through washing. Reliable cleaning of the inner screen basket surfaces is just as important as cleaning of the outer surfaces. The inner surfaces are typically cleaned by a scraper that is mounted on the screw flights and wipes clear the inner filter surface as the screw shaft rotates. The efficiency of this scraping and wiping operation has direct influence on filter resistance and the water discharge velocity of the screw press. Both have an influence on dewatering degree, throughput, filtrate quality, polymer demand, and thus on the operating costs for dewatering. After extensive development and test series HUBER screw presses are now equipped with a patented scraper material which cleans the inner filter surface much better and more reliably than customary brushes and lip seal systems. The scraper material is a product sold by metre which, contrary to competitive products, can easily be mounted on the screw shaft without time-consuming alignment. Well-proven for many years, wear-resistance and insensitive to clogging, wedge wire baskets with different bar spacings remain the basis for the three filter baskets of the screw press. What is new is that the open filter surfaces in the filter baskets have been increased by up to 100%. The individual screen sizes are therefore able to process significantly higher hydraulic loads without placing higher loads on the filter surfaces and thus the filtrate, and without increasing polymer demand. New drives exceed current energy efficiency standards. They save not only electricity costs, they also offer plant operators the possibility to operate their sludge dewatering unit much more flexibly due to significantly wider motor speed ranges. For good reasons, the basic appearance of the press, the inclined installation, remains as it has always been. The inclined design ensures that screenings removal units can in most cases be connected without the need to place it on an additional elevation. Furthermore, the inclination of the filtrate chambers prevents sedimentation and eliminates the need for manual cleaning work. Another decisive advantage of the inclined installation is improved dewatering efficiency. The separated filtrate flows off from the screen basket by gravity, against the flow direction of the press sludge. Rewetting of hydrophlic sludges through filtrate is thus reduced and the dewatering degree improved. Moreover, inclined installation facilitates especially the start-up procedure of the screw press. During the starting phase a uniform press cake is automatically produced within a very short time whereas horizontal screw presses need additional polymer to prevent breakthrough of thin sludge. The newest generation of HUBER screw presses excel especially for their variety of technical improvements which are also reflected by their appearance. The known rising silhouette has now much more distinctive lines and a colouring with a high recognition value. But, of course, design was not everything: The size of the maintenance openings which provide access to the filter surfaces and sludge discharge has been increased and even an additional access to the filter inside has been integrated. All supporting parts of the Q-PRESS® and parts in contact with medium are of course still made from stainless steel and manufactured exclusively in Germany.[...]

[...]High quality of HUBER Global Service, a machine lifetime: HUBER SE's Global Service division stands for competence and reliability and takes full care of all customer concerns regarding after-sales service. Service specialists are available around the clock and around the globe to help customers maintain the quality and performance of HUBER products. Regular queries on quality and customer satisfaction: HUBER Global Service at a consistently high level To ensure this high level of quality and customer satisfaction, we continuously conduct surveys on the quality of our services and the satisfaction of our customers. We conduct these direct surveys on the performance of our business unit and our service technicians by randomly talking to randomly selected customers about the handling of the entire job after a completed service and having the customer rate the individual parameters. These parameters include, among others: Quality of the work carried out Professional competence of our service technicians Support and advice from the service consultant or service centre Friendliness and appearance of the service technician Adherence to delivery dates The diagram below shows that we have maintained our standard at a consistently high level for several years. These results confirm us in our approach every year anew. Continuous quality assurance: identifying further improvements and initiating optimisation The monthly surveys of our customers and the evaluations thereof are carried out in order to be able to react immediately to possible further improvements and to initiate measures for optimisation, as well as to train our staff accordingly and to further develop processes if necessary. In this way, we maintain the quality of the services and processes of HUBER Global Service at a very high level, demanding of ourselves that we live this quality every day and maintain the high level. HUBER ensures the satisfaction of its customers not only through the high quality of its products and solutions, we are also prepared to accompany and support our customers and their products throughout their entire (machine) life.[...]

[...]ROTAMAT® Screens Screening – Washing – Transport – Dewatering in one unit A system for screens with maximum separation efficiencies and throughput, proven in thousands installations world-wide. A system for screens with maximum separation efficiencies and throughput, proven in thousands installations world-wide. Products and Variants HUBER Fine Screen ROTAMAT® Ro1 ROTAMAT® Screens HUBER Rotary Drum Fine Screen ROTAMAT® Ro2 / RPPS / STAR ROTAMAT® Screens HUBER Micro Strainer ROTAMAT® Ro9 ROTAMAT® Screens HUBER Complete Plant ROTAMAT® Ro5 ROTAMAT® Screens | Complete Plants HUBER Complete Plant Hydro Duct ROTAMAT® Ro5 HD ROTAMAT® Screens | Complete Plants HUBER Coanda Complete Plant ROTAMAT® Ro5 C ROTAMAT® Screens | Complete Plants HUBER Pumping Stations Screen ROTAMAT® RoK4 ROTAMAT® Screens Screening Separation – Washing – Transport – Dewatering in one unit Based on the ROTAMAT® principle "screening – washing – transport – dewatering in one unit" a complete ROTAMAT® family was developed and successfully launched onto the worldwide wastewater treatment market. All ROTAMAT® screens work according to the unique system that has been sold for more than a thousand installations worldwide. The space-saving screens can be installed into either a channel or tank. Depending on the screen size and bar spacing throughputs of up to approx. 3,000 l/s (10,800 m³/h) per unit can be achieved. The machines are completely made of stainless steel. Their unique principle ensures maximum separation efficiencies and maximum throughput.[...]

[...]Good ideas always find imitators The RakeMax® HF excellently combines the advantages of the well-proven RakeMax® with the positive properties of a screen with a bar rack that is installed with only a small inclination. The multi-rake bar screen RakeMax® for preliminary mechanical wastewater treatment was developed by HUBER in 2003 and presented to the public for the first time at IFAT 2005. Due to its versatility the RakeMax® has since very well proven its efficiency and become firmly established in the global wastewater technology market. More than 1,300 reference installations give proof of this success. On the basis of the successful RakeMax®, another new screen type for headworks has been developed in the course of continuous further development and for the first time presented at IFAT 2010, the L-shaped RakeMax HF® (high flow). Like the RakeMax® screen this L-shaped multi-rake bar screen belongs to the MAX family of HUBER screens. It were our competitors themselves who indirectly confirmed that we are on the right track with this innovation at IFAT 2014 where similar models could be "admired" on many booths. The RakeMax HF® screen consists of a flat and therefore hydraulically advantageous bottom section and a steep conveying section. This combines the benefits of the well proven RakeMax®, reliable solids separation and high screenings discharge capacity, with a low headloss due to a large effective screen rack surface. We have already sold more than fifty RakeMax® HF units. Due to the extremely small inclination of the bar rack, the screen section through which the flow passes is always double the flow profile in front of the rack. Another advantage of the large effective screen rack surface is that the flow velocity is very slow in the screen gaps with the result of a significant increase in separation efficiency. Furthermore, the flat installation angle of the bar rack and lifting of the material virtually at bottom level prevents problems with sediments in front of the screen, i.e. prevents right from the beginning that such material can settle at all. Main characteristics of the RakeMax® HF: High hydraulic throughput with a small bar spacing, even with deep channels Sturdy design, well-proven technology High removal efficiency Prevents disturbing sediments in front of the screen Especially with existing screening plants the minimum requirements on solids retention in the inlet are often not reliably met. One reason for this is certainly that people can select from a great variety of sanitary products today and have changed their consumer behaviour during the past years. To meet these changed requirements the passage opening at the bar rack needs to be reduced, but this frequently leads to growing hydraulic loads. These conditions make it inevitably necessary to provide for a bigger hydraulic passage area, and this normally means that the size of the existing channel has to be widened or even a new building erected for the screen, with the result of high construction costs. For such applications HUBER offers another screen type for headworks, the well-proven L-shaped multi-rake bar screen RakeMax® HF. RakeMax® HF screens can be adjusted to suit specific site requirements, both structural and hydraulic, and reduce investment and operating costs.[...]

[...]During dry weather, organic and inorganic sediments increasingly settle on the sewer base in combined sewer systems due to slow flow velocities. Under stormwater conditions, these sediments float up and arrive along with the sewer flow at the sewage treatment plant or stormwater overflow structure. If the combined sewer volume exceeds the capacity of the overflow structure or sewage treatment plant, the combined water is frequently discharged to a receiving water course, impairing water quality with the result of increased costs for maintenance and cleaning. As a preventive measure, coarse material retention systems are installed to retain unsightly coarse matter. DWA, the German Water, Wastewater and Waste Association, recommends in its Guideline A 166 the use of screening plants to retain coarse material. Scum boards are considered as unsuitable for this purpose. This position corresponds with the experience made in practice. Even though scum boards are able to retain the majority of the floating solids, the suspended matter can pass unhindered. In view of increasingly often occurring extreme weather conditions, even more consideration will have to be given to the use of screening plants in the future. Longer dry periods with storm events lead to load surges on coarse material retention systems with sudden huge amounts of screenings. In practice, it is quite possible that systems reach their capacity limits if faced with such high screenings loads. When planning a new plant, it is recommended to use especially systems that provide a defined take-up and removal of screenings directly at the sill and return of screenings to the continuation sewer through utilisation of the flow properties. Pushing the screenings back and forth only can very soon bring screening systems to their limits, with the result that part of the combined wastewater is discharged unscreened together with the screenings. In such cases, especially combined water screening systems for installation in front to the sill are well suited that transport the screenings in flow direction away from the machine. The screenings are transported along with the flow to the sewage treatment plant and do not get into contact with the combined water screening systems anymore. Moreover, no return of screenings is necessary, contrary to screening systems installed behind or on the sill. With its Storm Screen ROTAMAT ® RoK2, HUBER SE has offered a solution for such applications for more than 25 years already. In the RoK2 screens, the wastewater flows through the screen basket from bottom upwards. Screenings bigger than the screen surface perforations are retained on the screen basket and removed by a screw conveyor transporting the screenings to the discharge and dropping them at the end of the machine. While conveying the screenings, the screw cleans also the screen basket perforations so that the screen surface blinding produced is continuously low and maximum throughput rates are achieved all the time. The screen is equipped with a level control system and starts to operate automatically when the level control system measures a defined water level and stops again when the water level falls below the defined level again. This system keeps the run times of the screw as short as possible. In summary, it remains to be said that problems with screenings in combined water overflow structures will occur more and more in the next years. It is therefore important to develop a solution that is able to work reliably even with large screenings volumes.[...]

[...]Using the thermal energy of process water to reduce operating costs Much of the industrial wastewater comes from the food production sector: slaughterhouses, breweries and beverage industry, distilleries and dairies. Wastewater from the chemical industry or mineral oil processing is also part of industrial wastewater. Independent of the specific industry sector, these different types of wastewater have one thing in common: the high energy content of the wastewater streams. Recovering thermal energy from process water The reuse of thermal energy already contained in the production cycle is becoming increasingly important these days. To this end, considerable amounts of thermal energy can be recovered, especially from industrial process water with high temperature levels, in order to raise fresh process water, for example, to the temperature level required for the actual production process. If this is not practical, then there is the possibility of feeding this energy to other processes or using it for other purposes (e.g. energy contracting). Cooling industrial wastewater Industrial wastewater can either be treated in a company’s own separate wastewater treatment plant (direct discharger) or, after possible partial treatment, be discharged to a public wastewater treatment plant (indirect discharger). Regardless of whether treated wastewater is discharged directly into a receiving water body or into the public sewer system, it must be ensured that the discharge temperatures are not too high and that the required limit values are complied with. Process Technology HUBER solutions for wastewater heat recovery and wastewater temperature reduction A particular challenge when using heat exchangers for industrial process water and/or wastewater is when the medium tends to form a film on the heat exchanger surfaces. The more build-up there is, the more the heat transfer capacity and efficiency is reduced. With the HUBER Heat Exchanger RoWin , HUBER has developed a self-cleaning heat exchanger that ensures permanently high and efficient energy transfer. For the removal of coarse contaminants and larger solids from wastewater or process water, HUBER offers a comprehensive range of screens and screening systems .[...]