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[...]Sliding hatch cover, completely made of 1.4307 (AISI 304 L) stainless steel, with smooth finish. The sliding cover provides access to downward leading stairs. The cover is made of a stable stainless steel plate and equipped with plastic rollers and maintenance-free journal bearings. The cover is installed in an external guide rail and cannot be removed. Locking when closed is possible by a cylindrical lock. The rails consist of 60/40/2 mm rectangular section fixed with dowels along the rail edge. Manhole cover and rails shielded arc-welded, acid-treated in a pickling bath and passivated. Operating key included. Options 1.4404 (AISI 316 L) stainless steel Special design available on request Dimensions according to individual requirements. Available as: Straight version Circular version[...]

[...]Access door for buildings in potable water supply where chlorine gas is stored or used Chlorine room door, ready for installation, single door, double skinned, completely made from 1.4404 (AISI 316 L) stainless steel, with double rubber seal, the door and frame closing flush, the door opening to the outside (in escape direction), in accordance with UVV and DVGW standards. Door, skin: 1 mm , 55 mm thick, with injected CFCs-free polyurethane hard foam insulation, longitudinally ground surface finish, door inside lacquered in RAL 9006 (stainless steel look), with rubber seal. Fastened to the frame with stable maintenance-free hinge plates. Two aeration slits, W x H = 100 x 20 mm (one in top door section, one in bottom door section), with plastic insect screen. Galvanized mortise dead lock with stainless steel forend provided for a customer-supplied profile double cylinder, with anti-panic function. Stainless steel door handle set, button outside, handle inside. Frame, three-sided , fabricated from special section, with inserted rubber seal, with step flashing, including fixing material. Frame and door shielded arc-welded and acid bath cleaned before washing, drying and surface passivation. Options Frame: Z-frame Block frame Mounting: Embedded Bolted with dowelling clips Bolted through the frame not to affect the finished wall Door opening options: Hinges on left Hinges on right Other Options: Upper door closer, lockable in position One-part or two-part door arrestor Surface finish (lacquer with or without anti-graffiti properties, wooden panelling) Electronic monitoring options (alarm system in door surface, magnetic contact, lock-bolt contact) Door heating (heating cable in frame and/or door surface), without temperature sensor, without controls Potential equalisation on frame Security ventilation louvres, openings to admit light Steel sheet finish for exterior door surface for installations exposed to sunlight[...]

[...]Access door for water chambers, ready for installation, single door, double skinned Completely made from 1.4404 stainless steel (AISI 316 L), with double rubber seal. The door and frame closing flush, the door opening to the outside (in escape direction). Door leaf, skin: 1 mm , 55 mm thick, with injected CFCs-free polyurethane hard foam insulation, longitudinally ground surface finish, door seal certified to KTW and DVGW W270 standards. Fastened to the frame with stable maintenance-free hinge plates. Mortise dead lock completely made from stainless steel according to DIN 18251, class 3, provided for a customer-provided profile half cylinder, lockable only from the dry side. Stainless steel door handle set with button outside and handle inside. Frame, three-sided , fabricated from special section, with inserted frame seal certified to KTW and DVGW W270 standards, selectable sill closure, including fixing material. Frame and door shielded arc-welded and acid bath cleaned before washing, drying and surface passivation. Options Frame: Z-frame Block frame Mounting: Embedded Bolted with dowelling clips Bolted through the frame (not to affect the finished wall) Door opening options: Hinges on left Hinges on right Sill closure: With step flashing Circumferential block frame on four sides Other Options: Upper door closer, lockable in position (mounted on the dry side) One-part or two-part door arrestor Electronic monitoring options (alarm system in door surface, magnetic contact, lock-bolt contact, block lock) Potential equalisation on frame (dry side)[...]

[...]Access door for buildings in the field of potable water supply and wastewater disposal with average security requirements. Door, ready for installation , single door, double skinned, completely made from 1.4307 (AISI 304 L) stainless steel, with double rubber seal, the door and frame closing flush, the door opening to the outside (in escape direction). Door leaf , skin: 1 mm, 55 mm thick, with injected CFCs-free polyurethane hard foam insulation, longitudinally ground surface finish, with rubber seal. Fastened to the frame with stable maintenance-free hinge plates. Mortise dead lock according to DIN 18251, class 3, with increased corrosion protection, stainless steel forend, provided for a customer-provided profile double cylinder (mechanical or digital), handle and cover of stainless steel. Frame, three-sided , fabricated from special section, with inserted rubber seal, with selectable sill closure, including fixing material. Frame and door shielded arc-welded and acid bath cleaned before washing, drying and surface passivation. Options Frame: Z-frame Block frame Mounting: Embedded Bolted with dowelling clips Bolted through the frame (not to affect the finished wall) Door opening options: Hinges on left Hinges on right Sill closure: With step flashing Without step flashing Other Options : 1.4404 (AISI 316 L) stainless steel Panic lock Upper door closer, lockable in position One-part or two-part door arrestor Surface finish (lacquer with or without anti-graffiti properties, wooden panelling) Electronic monitoring options (alarm system in door surface, magnetic contact, lock-bolt contact) Door heating (heating cable in frame and/or door surface), without temperature sensor, without controls Potential equalisation on frame Security ventilation louvres, openings to admit light Steel sheet finish for exterior door If the door is exposed to sunlight, its operability may be affected. In such a case, it is recommended to equip the door outside with a wood panelling or steel sheet.[...]

[...]Security door, burglar and attack proof, certified to security of DIN EN 1627, resistance class RC3, ready for installation, single-leaf, double skinned, watertight up to 1.2 m WG, completely made from 1.4307 (AISI 304 L) stainless steel, with double rubber seal, the door opening to the outside (in escape direction). Door with injected CFCs-free polyurethane hard foam insulation. Longitudinally ground surface finish, with rubber seal. The closed door engaging flush with the frame by means of solid anchor bolts engaging in the frame for four-point locking. Fastened to the frame with stable, maintenance-free special hinge plates that compensate for increasing water pressure. Galvanized safety lock with stainless steel forend, with austenitic manganese steel plate as anti-drilling protection, provided for a customer-provided mechanical profile half cylinder in accordance with DIN 18252:2006-12,21-,31-,71-BZ), with anti-panic lock, i.e. the door can any time be opened from inside by operating the handle, even when locked. Protective stainless steel fitting, without cylinder cover, with a rigidly mounted turning handle and a red plastic handle inside. Handle set above the maximum water column. Frame, four-sided, with injected CFCs-free polyurethane hard foam insulation, made of stainless steel, for on-site installation, mounting and sealing materials included. Frame and door leaf shielded arc-welded and acid bath cleaned before washing, drying and surface passivation. Maximum permitted leakage rate: 0.3 litres/hour Options 1.4404 (AISI 316 L) stainless steel Upper door closer, lockable in position Upper door arrestor, releasable by hand Lockable from inside with a second handle Magnetic contact: “door open” or “door closed” status display Lock-bolt contact: “locked” or “unlocked” status display Potential equalisation on hinge side on top of frame Surface finish (lacquer with or without anti-graffiti properties) Lock for two side-by-side profile cylinders (that can be opened independently) Stainless steel rain protection rosette for the stainless steel profile cylinder Rain rail on top of frame Steel sheet finish for exterior door surface for installations exposed to sunlight Frame / mounting Options: Bolted with dowelling clips Bolted through the frame Door opening Options: Hinges on left Hinges on right Note: If the door is exposed to sunlight, its operability may be affected. In such a case, it is recommended to equip the door outside with a steel sheet finish.[...]

[...]Access door for buildings in the field of potable water supply without a burglar alarm system Security class RC4 is recommended by the criminal investigation department if the building is not secured by means of a burglar alarm system. Security door, burglar and attack proof , certified to security of DIN EN 1627, resistance class RC4, ready for installation, single-leaf, double skinned, completely made from 1.4307 stainless steel (AISI 304 L), with double rubber seal, the door and frame closing flush, the door opening to the outside (in escape direction). Sound insulation: 34/29 dB. Door leaf with injected CFCs-free polyurethane hard foam insulation, longitudinally ground surface finish, with rubber seal. Fastened to the frame with stable maintenance-free hinge plates. The closed door engaging flush with the frame by means of solid anchor bolts engaging in the frame for four-point locking. Additional protection of the internal lock box through an attack-proof protecting plate with anti-panic function. Galvanized safety lock with stainless steel forend, with austenitic manganese steel plate as anti-drilling protection, provided for a customer-provided mechanical profile half cylinder in accordance with DIN 18252:2006-12 42-,82-BZ, with anti-panic lock, i.e. the door can any time be opened from inside by operating the handle, even when locked. Protective stainless steel fitting, with cylinder cover, with a rigidly mounted turning handle on the stainless steel outside cover and a red plastic handle inside. Frame, three-sided as block frame , with inserted rubber seal, with step flashing, including fixing material. Frame and door shielded arc-welded and acid bath cleaned before washing, drying and surface passivation. Options 1.4404 (AISI 316 L) stainless steel One/two security ventilation louvre(s) size 400 x 200 mm Provided for a customer-supplied digital profile cylinder Upper door closer, lockable in position One-part or two-part door arrestor Lowerable floor seal Lockable from inside with a second handle Surface finish (lacquer with or without anti-graffiti properties, wooden panelling) Electronic monitoring options (alarm system in door surface, magnetic contact, lock-bolt contact) Door heating (heating cable in frame and/or door surface), without temperature sensor, without controls Lock for two side-by-side profile cylinders (that can be opened independently) Block frame insulation Potential equalisation on frame Steel sheet finish for exterior door surface for installations exposed to sunlight Mounting: Bolted with dowelling clips Bolted through the frame Door opening options: Hinges on left Hinges on right Note: If the door is exposed to sunlight, its operability may be affected. In such a case, it is recommended to equip the door outside with a wood panelling or steel sheet.[...]

[...]Access door for buildings in the field of potable water supply equipped with a burglar alarm system Security door, burglar and attack proof , certified to security of DIN EN 1627, resistance class RC3, ready for installation, double skinned, completely made from 1.4307 stainless steel (AISI 304 L), with double rubber seal, the door and frame closing flush, the door opening to the outside (in escape direction). Sound insulation: 34/29 dB . Security class RC3 is recommended by the criminal investigation department if the building is additionally secured by means of a burglar alarm system. Door leaf with injected CFCs-free polyurethane hard foam insulation, longitudinally ground surface finish, with rubber seal. Fastened to the frame with stable maintenance-free hinge plates. The closed door engaging flush with the frame by means of solid anchor bolts engaging in the frame for four-point locking. Galvanized safety lock with stainless steel forend, with austenitic manganese steel plate as anti-drilling protection, provided for a customer-provided mechanical profile half cylinder in accordance with DIN 18252:2006-12,21-,31-,71-BZ), with anti-panic lock, i.e. the door can any time be opened from inside by operating the handle, even when locked. Protective stainless steel fitting, without cylinder cover, with a rigidly mounted turning handle and a red plastic handle inside. Frame, three-sided , fabricated from special section, with inserted rubber seal, with step flashing, including fixing material. Frame and door shielded arc-welded and acid bath cleaned before washing, drying and surface passivation. Options 1.4404 (AISI 316 L) stainless steel One/two security ventilation louvre(s) size 500 x 300 mm Provided for a customer-supplied digital profile cylinder with anti-panic function and pulling protection Upper door closer, lockable in position One-part or two-part door arrestor Lowerable floor seal Lockable from inside with a second handle Surface finish (lacquer with or without anti-graffiti properties, copper covering, wooden panelling) Electronic monitoring options (alarm system in door surface, magnetic contact, lock-bolt contact) Door heating (heating cable in frame and/or door surface), without temperature sensor, without controls Lock for two side-by-side profile cylinders (that can be opened independently) Stainless steel rain protection rosette for the stainless steel profile cylinder Block frame insulation Potential equalisation on frame Steel sheet finish for exterior door surface for installations exposed to sunlight Frame / mounting Options: Z-frame – bolted with dowelling clips Block frame – bolted with dowelling clips Block frame – bolted through the frame Door opening Options: Hinges on left Hinges on right Note: If the door is exposed to sunlight, its operability may be affected. In such a case, it is recommended to equip the door outside with a wood panelling or steel sheet.[...]

[...]Combined Sewerage and Stormwater Treatment Protection of water bodies from polluted rainwater The advanced treatment of combined and stormwater in wastewater transportation systems is a main issue with regard to sustainable environmental and water protection. The building of new wastewater treatment plants and the upgrading or refurbishing continuous wastewater discharges has significantly increased the quality of many watercourses. Nevertheless, despite all efforts, ecological deficits still exist. Some of the problems are caused in the discharges of combined and separated sewers during storm events when floating and coarse material from the sewers passes into the water bodies. The advanced treatment of combined and stormwater in wastewater transportation systems is a main issue with regard to sustainable environmental and water protection. The building of new wastewater treatment plants and the upgrading or refurbishing continuous wastewater discharges has significantly increased the quality of many watercourses. Nevertheless, despite all efforts, ecological deficits still exist. Some of the problems are caused in the discharges of combined and separated sewers during storm events when floating and coarse material from the sewers passes into the water bodies. Screening in Pumping Stations HUBER screens and screening systems protect pumps in pumping stations from clogging and blockage and increase their operational safety Combined Wastewater Screening HUBER offers proven screening systems for the safe retention of solids in stormwater overflows, stormwater overflow basins and sewers that discharge wastewater into a body of water. Technical Road Runoff Treatment In the HUBER road wastewater treatment plant, a space-saving HUBER Disc Filter RoDisc® is used instead of a soil filter. Flood and Backwater Protection We offer flood-proof HUBER Manhole Covers as well as flood-proof technical doors for protection against flooding and backwater. Diverse solutions for the sewer system and stormwater management HUBER offers various machines and products for sewer systems and stormwater drainage as well as for the different structures for the treatment of combined sewage and stormwater. Screens for pumping stations : Trouble-free operation of pumping stations in the sewerage system can be achieved if pumping stations are equipped with appropriate screening systems to ensure that coarse material is safely removed. Combined wastewater screening : Before stormwater and combined sewage are discharged into a watercourse, screening plants are used to separate larger solids from the wastewater. Road run-off treatment : Special plants for the treatment of precipitation water that is to be drained and treated from roads and other traffic-related surfaces. Protection against flooding and backwater : Heavy rainfall events are increasingly causing flooding. Structures should therefore be equipped with suitable products that provide protection against flooding and backwater. Equipment for manholes : Stainless steel components such as manhole covers, ladders, step irons, railings, access aids and prefabricated manholes. FAQs Frequently Asked Questions What is DWA-A 102? The DWA-A 102-1/BWK-A 3-1 Standard is entitled "Principles for the management and treatment of stormwater runoff for discharge into surface waters" and was published in December 2020 by the German Association for Water, Wastewater and Waste (DWA). DWA-A 102 replaces A 128. The content of A 102 is water protection with regard to precipitation-related urban runoff. Planning principles and recommendations for action are given for both separate sewer systems and combined systems with the aim of minimising undesirable substance input into water bodies and the soil. What is a separate sewer system? In a separate sewerage system, stormwater is collected separately from domestic and/or industrial wastewater and discharged into a nearby receiving water body or infiltrated. Whereas in the combined sewer system the stormwater is routed to the sewage treatment plant together with the wastewater, the separate sewer system has the advantage that the sewage treatment plant does not have to deal with the hydraulic load of the stormwater and the wastewater sewer can be dimensioned smaller. However, with a separate system, all pipes are needed in duplicate. Yet, rainwater can also be heavily polluted in some cases. Depending on the degree of pollution, this may also lead to pollution of water bodies, so that so that the rainwater should also be treated appropriately. In Germany, the trend is increasingly towards separate systems.[...]

[...]Products and solutions for the safe operation of sewer systems and the protection of our environment Only with a functioning sewer network can secure wastewater disposal be ensured that meets both water protection and flood protection requirements. Combined sewers carry the wastewater together with the rainwater that accumulates on paved surfaces (roofs, roads, etc.). In a separate sewer system, wastewater and stormwater are collected separately. The disadvantage of separate sewer systems is higher investment costs, the advantage is that less wastewater has to be treated in the sewage treatment plant, as the rainwater can be infiltrated or discharged into a body of water. HUBER has various products and solutions to meet the challenges associated with the operation and maintenance of a sewer system. HUBER offers a range of products and solutions for the sewer system Screens for pumping stations : Trouble-free operation of pumping stations in the sewerage system can be achieved if pumping stations are equipped with appropriate screening systems to ensure that coarse material is safely removed. Combined wastewater screening : Before stormwater and combined sewage are discharged into a watercourse, screening plants are used to separate larger solids from the wastewater. Road run-off treatment plant (SABA) : Special plants for the treatment of precipitation water that is to be drained and treated from roads and other traffic-related surfaces. Protection against flooding and backwater : Heavy rainfall events are increasingly causing flooding. Structures should therefore be equipped with suitable products that provide protection against flooding and backwater. Access solutions for manholes and tanks : Stainless steel components such as manhole covers, ladders, step irons, railings, access aids and prefabricated manholes. Heating and cooling with sewer water : Wastewater in sewers usually has a temperature between 12° and 20° C, and even in winter the temperature hardly ever drops below 10° C. The HUBER ThermWin process ensures that wastewater from sewers can be used as a renewable energy source for heating and cooling buildings. Treatment of mineral waste : In the sewer system, deposits accumulate time and again, which have to be removed regularly during sewer cleaning. These deposits are an inhomogeneous mixture of mineral solids contaminated with organic material. HUBER offers solutions for the treatment of mineral waste and thus enables more cost-effective disposal.[...]

[...]Ingolstadt, Germany Two HUBER belt dryers BT were put into operation on STP Ingolstadt in August 2005. The installed total dryer surface is 160 m² which is the same as that of our new dryer type BT 16. The scope of supply of HUBER SE included not only the drying plants but also the sludge bunkers and thick sludge pumps. The exhaust air treatment system has already been installed. Figure 2 shows the complete plant. The special feature of sewage sludge drying on STP Ingolstadt is that the drying process takes place on a very low temperature level. Warm water with a temperature of 53 °C is available as heat carrier medium. This warm water is heated in the adjacent waste incineration plant via a water-vapour heat exchanger. The exhaust steam from a condensation turbine is available all year round. As this hot water is free for the sewage treatment plant, their operating costs for sewage sludge drying are very low. The dry sewage sludge, which is dried to 90% DS, is thermally utilised in the waste incineration plant, this closes the loop. 294,000 driving kilometres saved per year 88,000 litres of diesel saved per year CO 2 emissions reduced by 225,000 kg per year No use of primary energy Utilisation of secondary energy in the form of cost-free exhaust heat from the waste incineration plant Use of current that has been generated from regenerative sources on the waste incineration plant Most maintenance work (e.g. cleaning the pelletising system) can normally be carried out without having to interrupt plant operation. There are hardly any standstill times, most of the time the dryers operate seven days a week. The sludge drying plants therefore achieve an average annual operation time of significantly more than 8,000 h. The technical plant manager is especially enthusiastic about the low maintenance requirements. The technical data of the sludge drying plant are specified below: Sludge input: 12,000 t/a Number of drying lines: 2 Input DS: 30 % Output DS: 90 % Operating time: > 8,000 h/a Throughput per line: approx. 900 kg/h Maximum water evaporation per line: approx. 600 kg/h Hot water flow temperature: approx. 53°C Heat demand: approx. 7,500 MWh/a from waste incineration plant Current demand: approx. 150 kW[...]