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[...]Sight glass in the bottom of water tanks, pressure-tight up to a water gauge of 10 m Inspection cover , pressure-tight up to a water gauge of 10 m, round, completely made from 1.4404 (AISI 316 L) stainless steel, can be lined on both sides. Sight glass with 15 mm thick safety glass , convex towards the pressure side. Sealing with two rubber seals. Clear sight diameter: 400 mm. Access duct cover with centrally welded wall flange, provided for embedding in concrete. Wall flange dimensions: 616 mm. Access duct cover shielded arc-welded, acid-treated in a pickling bath and passivated. Options 1.4307 (AISI 304 L) stainless steel Sanding of wall pipe parts in contact with concrete[...]

[...]Access door for containers, especially in the field of potable water supply Pressure-tight door , pressure-tight up to a water gauge of 10 m, opening to the pressure side, ready for installation, to be lined on both sides, round, completely made from 1.4404 (AISI 316 L) stainless steel, statically certified. Door, bent for increased pressure capacity . With circumferential square silicone seal, suitable for potable water, ozone resistant, certified to KTW and DVGW W 270 standards. Locking with the help of screw locks operable only from the dry side. With stable maintenance-free hinge plates between the door and frame. Frame, designed as an access duct cover with a centrally welded wall flange. Frame with lifting eyes. Frame and door shielded arc-welded and acid bath cleaned before washing, drying and surface passivation. Options Frame, for retrofitting, space required for the frame: 150 mm, circumferential. Prerequisite is a plane inner wall surface, tolerance: ± 1 mm per metre. Pressure door for round tanks (only possible for setting in concrete) Centrally installed inspection window, inside diameter: 150 mm, with or without window wiper Door opening options: Hinges on left or on right Installed LED underwater spotlight Installed cylinder lock (operable from one side) Sanding of frame parts in contact with concrete Sampling valve on external door surface Provided for welding to the PE coating Potential equalisation on the frame Completely made of 1.4307 (AISI 304 L) stainless steel[...]

[...]HUBER STEP SCREEN® Reliable Separation and Transport of Screenings for High Separation Efficiencies and any Flow Rate Products and Variants HUBER Fine Screen STEP SCREEN® SSV STEP SCREEN® HUBER Fine Screen STEP SCREEN® SSF STEP SCREEN® The success and broad acceptance of the STEP SCREEN® system is due to its function, the easy-to-understand operation method, the simple cleaning method without any aids (self-cleaning effect according to the counter current principle), easy servicing, its ability to handle very large screenings volumes and its operating reliability. Contacting us means speaking with a partner who has more than 30 years experience with screens, their layout, construction, manufacture, operation and after-sales service and with several ten thousands of references worldwide is the unrivalled market leader in mechanical preliminary wastewater treatment.[...]

[...]Odense, Denmark[...]

[...]Amsterdam, Netherlands When the Dutch sewage treatment plant Amsterdam-West was modernised in 2006 it was redesigned for the treatment capacity of 1,000,000 PE. In addition, more than another 1,000,000 PE external sludge can be treated there. In the past, particularly the treatment of primary sludge was a problem in terms of the operating reliability of the entire sludge line. The solids contained in the different types of pre-treated sludge and from the transport tanks cause high wear and lead to unforeseeable maintenance work requirements on pumps, digestor internals and sludge dewatering systems. In order to remove the solids from the sludge four HUBER STRAINPRESS® units were installed and successfully commissioned in 2011 via the company Dutch Spiral. The supply included removal systems and screenings containers. Up to 75 m³/h primary sludge with a solids content of 1 to 6 percent is pumped through each STRAINPRESS® unit. The solids are retained by a conical-shaped screen with a perforation of 5 mm. When the screen surface is blinded with solid material, a filtration resistance develops on the screen surface. When the filtration resistance exceeds a certain pressure difference a removal screw inside the screen drum automatically starts to operate and cleans the screen surface. In the same process step the solids retained in the screen are compressed against a pneumatically operated pressure cone and then discharged. The screened primary sludge is transported to the digestor by the pressure of the feed pump. At Amsterdam-West the dewatered solids with a dry substance content of 40% are dropped into two troughs where the screenings from two machines are collected prior to being discharged into two odour-tight containers. The screenings are incinerated in an incineration plant that is installed directly next to the sewage treatment works. The high efficiency of the HUBER STRAINPRESS® units becomes especially evident when comparing them to the four screens that are installed in the STP inlet and have a bar spacing of 6 mm and width of 4 m each: The screens separate an annual screenings volume of 125 tons dry substance. A downstream screenings press compacts the screenings to a dewatering degree of 25%. In comparison, the downstream STRAINPRESS® units separate 600 tons dry substance a year, which is five times the volume the screens are able to remove. The integrated dewatering mechanism constantly achieves dewatering degrees of 40% and thus can produce a combustible product. Since the STRAINPRESS® is a completely odour-encased system, neither sludge nor screenings cause a corrosive or explosive atmosphere inside the building. The machines can nevertheless be completely opened very easily for inspection or maintenance. Since the installation of the HUBER sludge screening systems at the beginning of 2011 maintenance costs and shutdowns have been reduced significantly on STP Amsterdam-West. The operating reliability of HUBER STRAINPRESS® systems can be witnessed not only on the reference sites Amsterdam and Den Haag in the Netherlands but also on many other sites all over the world, such as Berlin, Barcelona, San Diego, Seoul, Marrakesh, etc. Benefits of STRAINPRESS® Sludgecleaner: High separation efficiency Significantly reduced operating costs Compact, fully enclosed design Proven in thousands of installations[...]

[...]Safety access ladder, with design certification and CE marking, in accordance with DIN EN 14396. Made of 1.4307 (AISI 304 L) stainless steel. Handles made of special profile of high rigidity (57 x 25 x 2.5 mm), covered with PVC caps. Rungs made of U-profile with perforated surface, 30 mm, slip resistance R 13, step height 280 mm, clear ladder width 300 mm, 400 mm or 500 mm. Completely shielded arc welded, acid-treated in a pickling bath and passivated. Variants Type A) Vertical installation Including long wall fixings, 150 mm brackets adjustable in height for dowelling, providing a minimum tread depth of 150 mm (distance from the wall to the middle of the rung). Type B) Angled, wall fixing With hooks at the top end to hook into the supplied clamp, with holders at the bottom end to be fixed to the wall, with rubber buffers for wall protection. Options 1.4404 (AISI 316 L) stainless steel Stainless steel fixing material: stud anchors Adjustable wall brackets Rest platform, foldable, for type A Entrance aid in accordance with DIN 19572: Access ladders must have a handhold at their exit. This requirement is deemed to be fulfilled if one or both handles of a ladder project at least 1.1 m beyond the exit height. This projection must be taken into account when selecting the ladder length[...]

[...]Safety access ladder with guard rail, with design certification and CE marking, in accordance with DIN EN 14396, made of 1.4307 (AISI 304 L) stainless steel. Designed to attach an insertable entrance aid. In accordance with UVV regulations ladders with 3 m or 5 m a height of all must be equipped with devices that protect personnel against falls from a height. In accordance with DIN EN 14396, made of 1.4307 (AISI 304 L) stainless steel, designed to attach an insertable entrance aid. Handles made of special profile of high rigidity (57 x 25 x 2.5 mm), covered with PVC caps. Rungs made of U-profile with perforated surface, 30 mm, slip resistance R 13, step height 280 mm, clear ladder width 400 mm or 500 mm, 150 mm long wall fixing brackets for bolting included (distance from the wall to the middle of the rung), with additional safety guard rail fixed to the middle of the ladder. Completely shielded arc welded, acid-treated in a pickling bath and passivated. Options 1.4404 (AISI 316 L) stainless steel Fall arrestor type S5c with self-unfolding safety belt type HSE-BFD and spring safety hooks certified by “TÜV SÜD PRODUCT SERVICE GmbH“, CE 0123, suitable for safety guard rail Safety belt in accordance with EN 361, form A (breast-shoulder-crotch belt), suitable for safety guard rail Stainless steel fixing material: stud anchors Rest platform, foldable Entrance aid in accordance with DIN 19572 Access ladders must have a handhold at their exit. This requirement is deemed to be fulfilled if one or both handles of a ladder project at least 1.1 m beyond the exit height. This projection must be taken into account when selecting the ladder length! Refer also to our dimension sheet for the entrance aid. The following entrance aid with guard rail options are available (see following pages): Insertable entrance aid, pivoted, type EH FSS D, L = 1260 mm Insertable entrance aid, type EH FSS, L = 1260 mm Insertable entrance aid, type EH FSS ‘Köln’, L = 1680 mm, with additional rung[...]

[...]Safety climbing device, with design certification and CE marking, in accordance with DIN EN 14396, made of 1.4307 (AISI 304 L) stainless steel. In accordance with UVV regulations ladders with 3 m or 5 m a height of all must be equipped with devices that protect personnel against falls from a height, in accordance with DIN EN 14396, made of 1.4307 (AISI 304 L) stainless steel. The handle in the middle is made as a safety guard rail, with bottom and top trip gear, which can only be undone by hand, U-profile climbing rungs with perforated surface, 30 mm, slip resistance R 13 and lateral slipping limits, step height 280 mm, with fixing brackets for wall fixing (max. distance 840 mm), with coupling for insertable entrance aid. Completely shielded arc welded, acid-treated in a pickling bath and passivated. The following entrance aid with guard rail options are available : Insertable entrance aid, pivoted, type EH FSS D Insertable entrance aid, type EH FSS Insertable entrance aid, type EH FSS ‘Köln’ Options 1.4404 (AISI 316 L) stainless steel Fall arrestor type S5c with self-unfolding safety belt type HSE-BFD and spring safety hooks certified by “TÜV SÜD PRODUCT SERVICE GmbH“, CE 0123, suitable for safety guard rail Safety belt in accordance with EN 361, form A (breast-shoulder-crotch belt), suitable for safety guard rail Stainless steel fixing material: stud anchors Rest platform, foldable Entrance aid in accordance with DIN 19572 Access ladders must have a handhold at their exit. This requirement is deemed to be fulfilled if one or both handles of a ladder project at least 1.1 m beyond the exit height. This projection must be taken into account when selecting the ladder length! Refer also to our data / dimension sheet for the entrance aid.[...]

[...]Increasing operational safety for pumping stations Pumps and lifting units are used where wastewater needs to be lifted to a higher level so that it can be passed further on by gravity. However, the solids contained in the wastewater (coarse materials, foreign matter, fibres) often lead to a failure of the units used, as they cause operational downtimes due to clogging and blockages. Labour-intensive manual cleaning is required to restore the function of the units or, in the worst case, they even need to be replaced. To ensure trouble-free and reliable operation of a pumping or lift station, the installation of an upstream screening system is the best solution. HUBER has special screens and screening systems in its product range, which are especially suitable for pumping stations, shaft structures or lift stations and can be used both for sewage treatment plants and in the sewerage system. This increases the operational safety and availability of the pumping stations and significantly reduces material and personnel costs. For smaller applications, the HUBER Pumping Stations Screen ROTAMAT® RoK4 is particularly suitable, and for larger applications the HUBER Multi-Rake Bar Screen RakeMax ® , the HUBER Multi-Rake Bar Screen RakeMax® CF and the HUBER Grab Screen TrashLift .[...]

[...]Reducing screenings volume and disposal costs The screenings from municipal wastewater treatment mainly consist of household waste-like materials, faeces, paper and mineral particles. The screenings volume depends on the aperture size of the screening system. The solids content of municipal, untreated screenings varies from 5 – 20 %, depending on the type of screen. The organics contained in the screenings amount on average to approx. 90 % of the dry residue [DR]. The objectives of screenings treatment are: Dewatering of the screenings and thus reduction of screenings weight and volume. This also reduces the disposal costs for the screenings. Return of easily degradable carbon to the wastewater treatment process. Improving hygiene conditions for sewage treatment plant personnel. Wash Presses The best type of screenings treatment is screenings wash presses By adding wash water and mechanical energy, faeces and suspended organic matter are washed out of the screenings in a wash press and returned to the wastewater, thus positively influencing the C / N ratio of the wastewater to be treated. After washing, the screenings are well compacted so that the water content in the washed screenings is significantly reduced. Depending on the selected washing process and press type, a weight and volume reduction of up to 80 % can be achieved. The weight and volume reduction also means a reduction in disposal volume and thus directly influences the costs that have to be paid for the disposal of screenings. HUBER has extensive experience in the design of screenings treatment plants and has different types of wash presses in its product program. HUBER also has the right solution for transporting screenings to the screenings treatment facility and feeding screenings from containers.[...]