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[...]In September 2015, new standards went into force which for the first time refer explicitly to manhole covers made of stainless steel: DIN EN 124-3:2015-09, manhole tops and gully tops for use in vehicular and pedestrian areas Compared to the previous DIN EN 124, several additional tests have been added, such as: Securing of the cover / grating within the frame Skid resistance test Tipping behaviour test, etc. From 2017 on at the latest, relevant products must comply with the new DIN EN 124 standards. Since the transitional period has begun already, it is recommendable to prepare tender specifications in compliance with the new standards already now. We as a manufacturer and exporter of manhole covers have made ourselves familiar with the new situation at an early stage already and have meanwhile transferred all new regulations to all our products. In August 2016, our manhole cover type SD7 was therefore tested to the requirements of DIN EN 124-3:2015-09 by MPA Bremen (German institute for materials testing). HUBER manhole covers SD7 now comply with the latest standards and regulations and thus provide maximum security. Due to our many years of experience in processing stainless steel combined with the final surface treatment in a pickling bath for passivation, HUBER products also guarantee maximum ageing resistance. Do not hesitate to contact us![...]

[...]Berching, Germany How it all began... In the 1950s and 1960s, manhole covers in "painted steel" and "galvanised steel" were proven products of the HUBER company and the covers were mainly manufactured for water pipeline construction. At the beginning of the 1970s, the brothers Hans and Karl-Josef Huber, the company owners at the time, recognised the desire and need of many customers for a low-maintenance manhole cover that did not require maintenance work such as regular painting of the surface. The idea of using stainless steel for this purpose was born and was implemented on a trial basis. At that time, stainless steel was very expensive and difficult to obtain, and delivery times were extremely long. The first covers were always produced according to the customer's wishes and specifications, using the experience gained over many years in the production of steel covers. Water suppliers from the Nuremberg area and large Bavarian long-distance water associations were the first customers for HUBER stainless steel manhole covers. Most of these covers are still in use today and, after 50 years, impressively demonstrate the long service life of the HUBER manhole cover - a role model in terms of sustainability! Since then, the use of stainless steel for manhole covers has become more and more widespread and, thanks to HUBER's pioneering work, has established itself in the market. In 1990, HUBER completely stopped the production of steel manhole covers and steel products and dedicated itself 100% to stainless steel. HUBER stainless steel manhole covers have become the norm Nowadays, tenders requiring a material other than stainless steel for manhole covers are the great exception, i.e. in the last 50 years the ratio has been exactly reversed. From these early beginnings, a wide range of different HUBER manhole cover designs have developed over the last five decades, always in close contact and cooperation with our customers. Especially the feedback from our customers we receive in discussions at trade fairs, through telephone calls or during field service visits, was then and still is extremely valuable. The practical application and regular use of the covers by our customers provide important approaches to continuously improve our products and thus maintain the HUBER quality they have come to expect. Feedback from the market, e.g. requesting a back-friendly opening of the heavy covers, prompted us to equip the HUBER Manhole Covers with gas springs, which we have now been doing for more than 30 years as a matter of principle. The complete range of HUBER Manhole Covers is "Made in Germany" or even more correctly "Made in Berching". Many of our customers have already taken the opportunity to visit our production facility. Thanks to modern and optimised production processes as well as motivated employees, we are able to withstand the price pressure of cheap foreign products. The HUBER anniversary cover HUBER stainless steel covers have now been on the market for 50 years and for us this is a welcome occasion to take a look at all the customer requests from home and abroad that we have collected over the years. We set ourselves the goal of fulfilling (almost) all customer wishes in an "anniversary cover", and the result is the innovative HUBER Manhole Cover SD50 SAP (Safe Access Pro) . This HUBER cover made of stainless steel chequer plate has an integrated fall protection which can be loaded up to 200 kg, concealed ventilation openings, seal on the underside of the cover and a recessed lock to name the most important features. 50 arguments for the HUBER Manhole Cover SD50 SAP (Safe Access Pro) Below are the 50 most important customer requests from A-Z: Lift-off protection through inner lugs Operating key included Load-bearing up to 500 kg Ventilation possible Digital locking systems Stainless steel Burglar-resistant according to DIN 1627 Easy to handle Compliance with ISO 9001 Spare parts available for many years Colour design possible Odour-tight Consistently high quality Replaceable rubber seal Hygienic Customisable Insect-proof Integrated fall protection Security of investment Durable Material options (V2A, V4A) The most economical solution in the medium term Sustainability Standard-compliant according to DIN 1239 Visually appealing Pollen filter or odour filter Inexpensive due to series production Quality control Stainless Back-friendly due to gas pressure spring Back pressure proof Fast delivery from stock Self-retracting arrestor Safety mortise lock can be retrofitted Special sizes and designs Stable Surface-watertight Flood-proof Monitoring by magnetic contact Different frame variants Concealed hinges Different locking systems Low-wear seal Brass closure cover Full bath pickling Completely made in Germany Compliant with regulations and rules (DGUV) Thermal insulation possible Maintenance-free Material completely recyclable You can always rely on us: Our cover is the original HUBER cover - everything else is a copy![...]

[...]Basel, Switzerland HUBER products for one of the largest wastewater treatment plants in Switzerland: Together with its Swiss partner company Helmut Breschan AG, HUBER is involved in the expansion of the Basel wastewater treatment plant (WWTP). The Berching-based company is supplying over 200 SD7 manhole covers in various designs, including accessories. The expansion of the Basel municipal wastewater treatment plant is progressing: one of the largest wastewater treatment plants in Switzerland is being expanded and adapted to the provisions of the new Swiss Federal Water Protection Ordinance. The plant is to comply with the latest legal requirements and regulations and, amongst others, is to eliminate micropollutants. After the expansion of the WWTP by ProRheno AG and the participating companies, the aim is also to largely remove nitrogen and organic trace substances from the wastewater in the future. For this project in the border triangle Switzerland-Germany-France, HUBER is supplying more than 200 SD7 manhole covers in various designs , including accessories such as fall protection grates. The high-quality and very durable equipment is to ensure safe and reliable access to the manholes, which are frequently found on wastewater treatment plants. Planning since 2008: commissioning expected in 2024 In 2008, ProRheno AG had decided to upgrade the municipal wastewater treatment plant ARA Basel (270,000 connected inhabitants and 520,000 population equivalents). These plans had been driven primarily by the new Swiss Federal Water Protection Ordinance: the planners recognised that the wastewater contained more and more micropollutants because an increasing amount of substances were finding their way into the wastewater. So far, these micropollutants could not be completely eliminated in the treatment process. The total investment costs amount to more than 295 million Swiss francs. The contract value for HUBER is about 1.1 million euros.[...]

[...]Houten, Netherlands It is an ideal location for advanced wastewater treatment: HUBER, through its Dutch representative Dutch Spiral B.V., supplies proven stainless steel equipment from its Safe Access Solutions (SAS) business unit for the Netherlands' first wastewater ozonation plant. The scope of supply includes five HUBER Access Covers TT8a and three HUBER Pressure-Tight Doors TT7. Residues of chemical substances in drinking water Dutch drinking water is among the world's best due to its intensive purification. However, increasingly precise analytical methods show that residues of chemical substances such as medicines are present in the drinking water. A report published in 2021 by the Dutch National Institute for Public Health and the Environment RIVM shows that substances that should not be present in drinking water in this quantity were found in more than 60% of the drinking water samples. Demographic change, use of medicines and quality assurance for drinking water The drought of the past years has led to an increased concentration of pollutants, but the demographic change in society and the accompanying increased use of medicines also play a role. The quality of drinking water in the Netherlands remains very good, but there is growing concern about future quality due to the factors mentioned above. Advanced wastewater treatment: Houten gets first wastewater ozonation plant in the Netherlands Advanced wastewater treatment is an important key to reducing pharmaceutical residues in surface waters. After a nationwide analysis, the wastewater treatment plant in Houten, a small Dutch town in the province of Utrecht with about 50,000 inhabitants, was determined to be an ideal location for the installation of the first water ozonation plant in the Netherlands. The most common techniques have shown that ozone is a suitable means of reducing the amount of pharmaceutical residues that enter surface waters via wastewater. It is planned to equip several wastewater treatment plants with this type of system in the future. Image Gallery Project Photos One of the installed stainless steel HUBER Pressure-Tight Doors TT7 Sight glass with wipers and LED lighting integrated into the pressure-tight doors - outside and inside view Round Access Covers TT8a with Screwed Joints Round Access Cover TT8a - detail view WWTP Houten receives five HUBER Access Covers TT8a and three HUBER Pressure-Tight Doors TT7 Ozone treatment in Houten takes place in a concrete ozone reactor equipped with aeration elements. These elements must be easy to inspect and easy to reach. A pressure-tight door is the best choice for safe and at the same time easy access. Thus, HUBER’s pressure-tight door type TT7 was chosen for the ozonation plant in Houten. The doors are located seven metres under water and are equipped with sight glass, wipers and LED lighting for easy observation of the effect of the ozone. It is a customised product with adaptations made to the sealing and glass type to prevent corrosion by the ozone. The HUBER Pressure-Tight Door TT7 is an all stainless steel, ready-to-install tank access door specifically designed for drinking water supply. The rectangular HUBER pressure doors are pressure-resistant up to ten metres, open to the pressure side, are ready-to-install, can be covered on both sides (wall thickness ≥ 280 mm) and are statically tested. The reactor consists of different chambers. In order to be able to carry out correct sampling from each chamber, pressure-tight HUBER Access Covers TT8a were installed on the ceiling of each chamber, which are resistant up to a gas pressure of 40 mbar. The HUBER access covers, specially developed for drinking water supply, are maintenance and inspection openings made of stainless steel, pressure-resistant up to 5 metres water column as standard. The round types are ready for installation, can be covered on both sides and include an interposed seal according to their field of application. A blind cover serves as a closure, to which two handles are attached for lifting, connected to the frame by screw connections.[...]

[...]Echthausen, Germany Wickede-Echthausen waterworks in the Ruhr Valley was built in 1942. About 35 hectares are available there for drinking water production. The waterworks belong to Wasserwerke Westfalen (WWW), a subsidiary of DEW21 and GELSENWASSER which produce drinking water for 1.5 million people with their about 138 employees. Six waterworks between Wickede and Witten treat the water of the river Ruhr and make it available as drinking water. The supply area includes parts of the southern Münsterland region, the central and eastern parts of the Ruhr Valley and the northern Sauerland area. In 2014, Wasserwerke Westfalen produced about 100 million cubic metres of drinking water. About 25 million cubic metres of it are the per year capacity of the Echthausen waterworks where an additional building (80 x 35 m) is under construction presently to complete the drinking water treatment plant and provide for additional technical water treatment steps (fig. 1). This plant consists of oxidation with ozone to break up persistent compounds, quick filtration for the removal of particles, and an activated carbon fixed-bed filtration for the removal of organics. Moreover, the existing chemical deacidification system with caustic soda is being replaced by a physical process that works without any addition of chemicals. In advance of the overall project, Wasserwerke Westfalen started already in 2010 to change the drinking water disinfection systems on their waterworks to systems that use UV light. This technology is even more efficient against potential pathogenic germs than the previously used chloroxide. HUBER is involved in the project as supplier of a TT7.30 pressure door, a new model of our common pressure doors. This new type of door extends our product range and can be used for applications with up to 30 m water columns, whereas our previously manufactured pressure doors withstand water columns of 'only' 10 metres. We supplied three of these pressure doors for this project, they were needed as inspection openings for the ozone reaction chambers. The water volumes flow through the plant with overpressure. The three pressure doors must be able to withstand that pressure. Easy access is ensured by the easy-to-operate central lock. Start-up of the water treatment plant is planned to take place at the beginning of 2016. We confidently look forward to the completion of the project and are sure our TT7.30 pressure doors will be doing their job excellently and reliably.[...]

[...]New pressure doors? Hasn't HUBER successfully manufactured a large number of pressure doors for a long time already? That's right – since the early eighties about 250 to 300 a year. What new features would make them better? The pressure doors (TT7) we have produced by now are laid out for a limited static load of up to 10 m water column. The feedback we get from the market, from suggestions, predictions or even concrete inquiries, we know that this pressure resistance will not be sufficient any more for many future building projects. A pressure resistance of up to 30 m water column could be required for some projects, such as for pumping stations, pressure increasing plants in drinking water supply projects, locks or stormwater overflow tanks. Reason enough to work on a solution! The solution has the internal name "TT7-30" – a pressure door that is absolutely tight up to 30 m water column. The development phase for the new door started at the beginning of 2012 and held a lot of challenges for everyone involved in the project. The HUBER product management together with the construction department designed a new door based on the long-term experience with manufacturing pressure-tight doors. A special construction had to be developed which, due to its distinctive design and appearance (see picture), offers a substantially improved resistance to high water pressures. The construction was statically calculated and tested to meet the diverse relevant standards, regulations and guidelines. After a prototype had been manufactured and successfully tested, the first order could be realized: As part of an order placed by Gelsenwasser AG for the water works Echthausen we delivered three doors of the new, innovative type with size 800x1200 mm. The new product impresses with numerous innovative features: Absolutely tight up to 30 m water column. The central lock allows for easy and quick operation of the door. Due to its special design the door can easily and hygienically be cleaned in the course of regular elevated reservoir cleaning. Especially robust seals have been developed with regard to dead water zones. The seals of the TT7-30 doors are certified to KTW and DVGW W270 standards which are of fundamental importance in the field of drinking water supply.[...]

[...]Utzenaich, Austria HUBER air filter plants are able to achieve separation efficiencies in excess of 99.95% In some water chambers condensation drops occur on the ceiling and walls. This should generally be prevented through sufficient insulation of the ceiling, sloping ceilings or through special coatings. Frequently, however, the problem cannot be solved with static methods. In 2011 already, we published a report about our experience with retrofitting forced ventilation systems in the elevated reservoir Utzenaich in Austria. When the reservoir with two rectangular chambers with 250 m³ capacity each was built in 2007 it had to meet high hygiene standards. The equipment components included stainless steel lining, sloping ceiling and air supply line with integrated air filter and underground loop with a slope to the air cooling and condensate discharge. HUBER air filter plants type L251 to L662 filter the air with a class H13 HEPA filter (HEPA = High Efficiency Particulate Filter or filter for suspended matter). According to DIN 1822:2011 filter class H13 means a separation degree (integrated measurand) of > 99.95 %. This is standard for operating rooms. The types L361 to L662 have a class M5 fine filter as pre-filter in addition to the H13 HEPA filter (according to EN 779:2012). Note: A water chamber with air supply via a HUBER air filter plant 'breathes' air as pure as in operating rooms of hospitals. But: There are people working in an operating room who breathe in and out producing used air. Therefore, routing of supply air and exhaust air flows is provided for in these rooms. We followed the example of such rooms and adapted this solution as far as necessary. Similar to the people working in operating rooms the water surface gives off humidity to the air. What is needed in the water chamber if it comes to condensation, in addition to the air filter plant, is forced ventilation (via ventilators) and exhaust air routing. The water reservoir at Utzenaich was the first successful test to eliminate condensation through forced ventilation. In the course of the following years a number of other reservoirs were equipped with forced ventilation in addition to the existing air filters. In all these reservoirs condensation could be minimised. Another advantage of this measure is that the whole system, starting from the ventilator, is in a status of slight overpressure so that the entry of unfiltered air into the water chamber is reliably prevented. What we do not know in detail is the behaviour of the relative air humidity in the area between the water surface and water chamber ceiling. Anyway, it does not make much sense to measure this profile because the frame conditions differ from case to case so that it is impossible to draw conclusions from one to the next case. Now as air filter plants have been used for 15 years, the installation of an air filter plant should meanwhile have become state-of-the-art, although binding regulations do not yet exist. If a new plant has been built of which all constructions are state-of-the-art or an old plant has been refurbished with taking all measures of condensate prevention that have been realisable with a justifiable budget but the condensate problem still exists, it is sufficient to know that condensation can most certainly be stopped completely by retrofitting forced ventilation (ventilator with approx. 150 – 250 Pa pressure increase in the operating range) and an air filter plant (unless there is one installed already) plus an outlet air line with an easy-to-open pipe plug (Δp approx. 80 – 120 Pa) or defined outlet air routing (which must not necessarily be a line).[...]

[...]For the protection of our most valuable resource – water Sustainability is of greatest importance in the field of water supply when investments are planned to modernise and refurbish elevated reservoirs, wells and pressure increasing plants. HUBER has convincing solutions to offer, one of them is the technically mature and high-quality safety door RC3. Many of this type of door have meanwhile been installed on a number of sites. Customers appreciate particularly its functionality and attractive appearance. In most cases, the doors can be installed without problems by the customers' qualified personnel themselves. Some plant operators have developed their own standards and design versions of HUBER RC3 doors. Leibnitzerfeld Wasserversorgung GmbH for example has equipped the exterior surfaces of all its HUBER doors with a steel sheet panel to protect them against sunlight. Where possible, a stainless steel frame is added to the RC3 safety doors to cover the wall. Also the process of project handling has been recognised as positive, including the field measures taken on site and the questionnaires for doors that have been worked out by the HUBER field service together with the responsible water masters. HUBER RC3 safety doors not only fit perfectly into the overall picture of each individual smaller or larger project, they significantly improve the protection of our most important resource, our water. Leibnitzerfeld Wasserversorgung GmbH - pumping station Kaindorf 1 Stainless steel frame as wall cover[...]

[...]Leibnitz, Austria Leibnitzerfeld Wasserversorgung GmbH has set itself the target to ensure the supraregional water supply in South and Southeast Styria. With an annual water production of about 3 million m³ and daily peaks of up to 15,000 m³ they supply the drinking water for 39 municipalities and three joint communities with a total of of 100,000 PE. In total, they operate 11 well system, 42 elevated reservoirs (of which 20 of their own with a capacity of 10,000 m³), 60 pressure increasing plants, and a network of 170 km transport lines and 139 km supply lines. Furthermore, they network with the water boards Graz, Leibnitzerfeld South and Grenzland Southeast. They plan to refurbish some of the elevated reservoirs, wells and pressure increasing plants in the near future. HUBER SE has been able to convince the responsible persons of Leibbnitzerfeld Wasserversorgung GmbH of the high quality and functionality of their safety doors and received an order for the supply and installation of eight RC3 doors. Already in the early project phase the HUBER sales representative in charge had taken care of the field measurement of the individual structures under the presence of a water master of Leibnitzerfeld Wasserversorgung GmbH. This ensures that the right measures can be taken for the problem-free installation of the HUBER RC3 doors. In addition, we give the customer a questionnaire where he can indicate his special requests and the special features of each door. We would like to use this opportunity to thank the persons in charge at Leibnitzerfeld Wasserversorgung GmbH for their confidence in our products.[...]

[...]Guelph, Canada “Nothing slips by the RakeMax®. Its operation is absolutely flawless. After three years, we look at the components in amazement because they are ageless – it’s as if they were just installed yesterday.” Majde Qaqish, Project Engineer for the City of Guelph WWTP It had become obvious to The City of Guelph that it was time to replace several of the components in its treatment process. Project leaders also wanted to take the opportunity to upgrade its treatment processes by implementing leading edge technology. Working with consultants, the City thoroughly researched solutions to identify, review, and choose the technology and vendor that was the best match for the plant and the long-term wastewater treatment goals of the City. After visiting implementation sites, talking to other Huber clients, participating in demonstrations of technology and vendors, the City confi dently selected HUBER and the RakeMax® bar screen. The City of Guelph installed four RakeMax® screen systems over 3 years to complete a configuration that produces 100% uptime. Two systems are in production at all times with two reserved for backup. The City maintains 100% capacity through regularly scheduled cleanings and maintenance checks. Minimum maintenance Incredibly high uptime Consistent performance Ageless durability Flawless operation Challenge: For Majde Qaqish, Project Engineer for the City of Guelph Wastewater Treatment Plant, putting a leading edge screening system in place was a priority. He had a set of stringent performance and durability requirements for the technology itself and wanted to combine those with productivity priorities for the maintenance crew. The City of Guelph required four things of its technology and vendor: 1. Improve the amount of waste removed from the stream 2. Operate efficiently with little required maintenance 3. Last well into the 50 year strategic wastewater treatment plan 4. Support the technology with knowledgeable, and responsive resources Solution: Majde knew HUBER and its local support resources. He understood the RakeMax® technology and – after seeing it operate at another treatment plant – considered it to be the best technology of its kind and the best choice for Guelph’s needs. With expectations set for its new technology to produce good efficiency in removing inorganics and grit from the stream, the City was delighted when the system was even more impressive, producing at high removal efficiency, zero-maintenance operations and consistently flawless performance. According to Majde, there is a tremendous quality improvement in what gets extracted at the headworks. As a result all tank capacity is made available for optimizing plant capacity. Made to be a workhorse The design, manufacturing, and materials make the RakeMax® incredibly durable and maintenance free. It consistently out-performs other technology. The RakeMax® is also configured for easy processing. Screen covers on both the top and bottom reduce emitted odors by 70%. Monitoring screenings is as simple as lifting the covers. Low maintenance Grit tank cleanings – previously performed by the City’s crew on 2-month cycles – are now performed on 9-month cycles. Low downstream impact Debris no longer collects in digesters and their operational efficiency has shown a 90% improvement. Improvements across the screening process Marked improvements are obvious in all areas the City’s screening process. The volume of screenings removed has increased, quality of end-product has improved and unscheduled maintenance needs have been reduced to zero. Operator Quotes: “We have 100% confidence in our technology and our vendor. The RakeMax® operates flawlessly and HUBER’s resources are close by and knowledgeable of the technology and our processes.” “The odor reduction is significant. The staff faced very offensive odors when entering the area. The covered screens block any odors that exist, however the process eliminates so much of the waste that the process’s ‘trademark’ odors just don’t exist.” City of Guelph, ON - Waste Water Treatment Plant: Facilities: 1 RakeMax® Implementations: 4 Service Area: City of Guelph as well as the Village of Rockwood and the Gazer-Mooney subdivision located in the Township of Guelph- Eramosa Average Flow: 54.5 ML/d The City of Guelph, Environmental Services Department, Wastewater Services Division (WSD), is engaged in wastewater, storm water and water quality management for the area which it serves. The WSD manages and operates the Wastewater Treatment Plant located at Hanlon and Wellington Street West and is responsible for meeting the treatment standards prescribed by Ministry of Environment (MOE) legislation.[...]