Search

[...]The best access for your structure Accesses to structures for drinking water supply or wastewater disposal have high requirements. For drinking water supply structures, for example, a burglar-resistant door must be installed in accordance with DIN EN 1627. In the drinking water tank itself, access to the water chamber is required for maintenance. Pressure-tight doors are used for this purpose. To allow access above the water level, special water chamber doors must be used. In the field of drinking water supply and wastewater disposal, there are many shaft structures that require an access or opening. These have to fulfil various characteristics such as having a centrally raised profile, being flush, burglar-proof, flood-proof, backwater-proof, for pedestrian traffic or load-bearing. Application Possibilities and Solutions The application possibilities of technical doors and manhole covers extend to many areas. HUBER offers solutions for technical doors made of stainless steel: Access doors Security doors Water chamber doors Chlorine room doors Watertight doors Pressure-tight doors Manholes Windows HUBER offers solutions for manhole covers made of stainless steel: Weatherproof manhole cover Attack-proof manhole cover Watertight manhole cover Load-bearing manhole cover up to 500 kg/m² Load-bearing manhole cover according to DIN EN 124 Furthermore, HUBER offers a variety of additional products, such as safety guards, safety access ladders and entrance aids in order to provide the complete range of equipment for access to structures and buildings.[...]

[...]Treat and reuse process water and waste water Water reuse makes it possible to use water in cycles. This reduces both the consumption of fresh water and the amount of wastewater produced. Water recycling and reuse in industry in the context of "ZLD - Zero Liquid Discharge" plays an important role with regard to the economical use of water as a resource. The importance of irrigating agricultural land with treated municipal wastewater is also widespread in many countries, especially those with less rainfall, and will continue to increase due to climate change and the need for a sustainable "circular economy". The treatment of water with the aim of reuse is carried out by a combination of different process steps, which must be adapted to the specific situation. Here, the quality of the contaminated water as well as the requirements for the treated water play the decisive role. HUBER has a comprehensive portfolio of products and technologies and is therefore able to develop and provide the necessary processes for a customised water reuse solution. HUBER process modules for water reuse Removal of coarse and fine solids: HUBER screens and screening plants reliably remove all types of larger and smaller solids, thus creating the preconditions for reliable implementation of further treatment steps. Grit removal: For the separation of grit or mineral constituents HUBER Grit Traps are used. Removal of dissolved and undissolved substances: The HUBER Dissolved Air Flotation Plant HDF is a chemical-physical process technology that can separate both dissolved and undissolved substances to a very large extent using suitable precipitants and flocculants. Separation of finest solids: For the removal of very fine solids and particles, HUBER offers various micro screens and filters for screening, sand filtration, cloth filtration and activated carbon adsorption.[...]

[...]Complete process technology for the treatment of surface water Surface water can be treated into drinking water using the following physical, mechanical and chemical process steps: Coagulation: Dosing a coagulant to the raw wastewater Flocculation: Dosing a flocculant, and possibly a flocculation aid, to the raw wastewater results in the formation of flocs. Clarification: The flocs are separated from the water e.g. with a lamella separator. Filtration: The clarified water is then filtered to separate even the smallest solids and flocs. Depending on the requirements, single-layer or multi-layer sand filters can be used for this purpose. Disinfection: Depending on the requirements, various options are available for disinfection: sodium and calcium hypochlorite, chlorine dioxide, chlorine, ozone, UV disinfection. The Mena-Water SafeDrink Package Plant is a cost-optimised treatment system that is available in a containerised design for quick-and-easy installation and is highly mobile. For more extensive purification of the water, reverse osmosis can be used as a further process step. Reverse osmosis is also able to separate dissolved salts and harmful compounds. The Mena-Water Reverse Osmosis System is quickly ready for use on site with little installation effort.[...]

[...]Various solutions for conveying dewatered and dried sewage sludge Sludge transport plays an important role in the planning and construction of sludge drying plants. On the one hand, the dewatered sewage sludge has to be brought into the dryer and on the other hand, the fully or partially dried sewage sludge has to be transported away from the dryer. When designing a particular transport solution, important criteria include not only the required transport capacity but also the sludge properties (moist, dry, sticky, dusty,...) and the desired degree of automation. Feeding and Removing Supply and Removal of Sludge at Drying Plants Feeding drying plants with dewatered sludge: The selected drying process – solar or belt or disc dryer – determines the way in which the dewatered sludge has to be fed to the dryer. HUBER has the right conveying solution for solar drying with the Sludge Turner SOLSTICE® as well as for the Belt Dryer BT and the Disc Dryer RotaDry® . Removing dried sludge from drying plants: Depending on the degree of dryness aimed for in the drying process, partially dried or fully dried sludge is present at the outlet of the dryer. The dried sludge must then either be conveyed to silos or containers or be incinerated.[...]

[...]Heating with the Sewage Treatment Plant Effluent Treated wastewater as a regenerative energy source with high energy potential The effluent of a sewage treatment plant represents a great potential for heat recovery and can make an important contribution especially to energy-efficient retrofitting of sewage treatment plants. All the wastewater that has been fed to the treatment plant via the sewage system is discharged into the receiving watercourse via a central outlet after treatment, so that large quantities of water are always available here. In addition, due to biological processes taking place, the temperature of effluents from sewage treatment plants usually is on average by 1 K higher than the inlet temperature. When heat is extracted from the effluent water of the treatment plant, it cools down accordingly. Since the discharge of cooler water has a favourable effect on the temperature and oxygen conditions in the receiving water, there is an advantage for flowing water biology. The Process Sewage treatment plant as a sustainable energy source Energy suppliers are increasingly discovering the potential of a sewage treatment plant as a source of energy and as a way of generating sustainable energy. Optimal installation increases economic efficiency To extract heat from the treated wastewater, the installation of the HUBER Heat Exchanger RoWin is necessary. The HUBER Heat Exchanger RoWin C version is particularly suitable for use in the outlet of a wastewater treatment plant. There is no tank, the heat exchanger modules are placed directly in the effluent stream and are thus optimally exposed to the flow. Installation of the heat exchanger in the channel or in a separate basin allows the use of the gravity flow from the sewage treatment plant. This means that no additional pumping energy is required. Innovative overflow weirs ensure optimal overflow even with varying effluent volumes. Optimal installation minimises costs and significantly increases the economic efficiency of such a system. The possibility of connecting the compact heat exchangers in parallel or in series opens up options for ideal adaptation to basin and wastewater conditions. Combined with load-bearing covers, the units can also be installed under parking areas for example. Fully automatic cleaning ensures long-term efficiency Utilisation of the clarified effluent from sewage treatment plants does not completely exclude biofilm formation on the heat exchanger surfaces. Therefore, fully automated cleaning of the exchanger tubes integrated in the HUBER Heat Exchanger RoWin is a key point for permanent and maximum heat transfer efficiency.[...]

[...]Future-oriented and sustainable solution for heating and cooling of buildings The HUBER ThermWin process allows heating and cooling of buildings by using the wastewater in the sewer system as a regenerative energy source. Right below the ground, in sewers, is a hidden and seldom used source of energy: our wastewater. Its temperature is usually between 12° and 20° C and hardly drops below 10° C even in winter, making wastewater an ideal energy source for operating a heat pump. All larger buildings and local heating networks are suitable consumers of the heating energy obtained in this way. The Process Heat Extraction from the Wastewater As a link between the wastewater and heat pump, a heat exchanger is required to extract the heat energy contained within the wastewater. The heat exchanger transfers the thermal energy from the wastewater to the heat pump. The HUBER ThermWin process uses the HUBER Heat Exchanger RoWin . The specific feature of this system is that the actual heat extraction from the wastewater takes place above ground and not in the sewer. All required system components are easily accessible and easy to maintain. The HUBER ThermWin process allows both heating (wastewater releases thermal energy) and cooling (wastewater absorbs thermal energy). In the HUBER ThermWin process, a partial stream of the wastewater flowing through the sewer is first passed through the HUBER Pumping Stations Screen ROTAMAT® RoK4 , which removes the coarse material from the wastewater. The wastewater is then pumped through the heat exchanger installed above ground and flows back into the sewer. Heat exchange with the secondary circuit, which is coupled with the heat pump, takes place within the heat exchanger. The heat exchanger used is the HUBER Heat Exchanger RoWin, specially developed for wastewater. The HUBER ThermWin process uses wastewater as a long-term secure and constantly renewable energy source to provide an environmentally friendly and sustainable method for heating and cooling buildings. Fossil energy sources such as gas, oil or coal can be saved and CO 2 emissions are minimised – a contribution to the fight against climate change.[...]

[...]Adsorption with granulated activated carbon (GAC, German GAK) is a simple, reliable and, above all, low-maintenance process. This makes it ideal as a fourth treatment stage, especially for smaller wastewater treatment plants. The core component of the process is the HUBER Active Carbon Filter CONTIFLOW® GAK , which is filled with granulated activated carbon and acts as an adsorber for the micropollutants. The particle size of granulated activated carbon (GAC) is usually between 0.5 mm to 4 mm. GAC Granulated Activated Carbon The HUBER Active Carbon Filter CONTIFLOW® GAK is installed downstream of the biological treatment stage. The wastewater flows through the carbon bed and the trace substances are adsorbed onto the activated carbon. An additional separation stage downstream of the HUBER Active Carbon Filter CONTIFLOW® GAK is not required. After reaching the adsorption capacity, the loaded activated carbon is replaced by fresh carbon. The loaded activated carbon can be reactivated and then used again for adsorption. One way of optimizing the process, depending on the requirements and boundary conditions, is to use ozone. In this case, an ozonation stage is provided upstream of the adsorption stage. Ozone (O3) is a strong oxidizing agent and is therefore able to oxidize at least some of the organic trace substances that are difficult to degrade. This significantly increases the broadband effect and also extends the service life of the activated carbon. In practice, the use of a filter stage before the elimination of trace substances has proven successful. This allows dirt and impurities to be reliably separated and thus do not reach the activated carbon bed or the ozone system. In addition to being easier to maintain, the filtration stage can also be used as a flocculation filter for phosphorus elimination at the same time, resulting in a valuable synergy effect. For this application, both the HUBER Rotafilt® cloth filter and the HUBER CONTIFLOW® sand filter are ideal key components.[...]

[...]Denitrification in the sand filter for nitrogen reduction Nitrogen is a basic building block of life and nature and, like phosphorus, is indispensable as a nutrient for all humans, animals and plants. Municipal wastewater contains various nitrogen compounds (including organically bound ammonium and nitrate). The removal of nitrogen is one of the main tasks of municipal biological wastewater treatment, because without sufficient nitrogen removal, the discharge of wastewater into receiving waters has significant negative effects on water quality and thus on flora and fauna. Denitrification Downstream Nitrogen Removal a Sand Filter Biological nitrogen removal in the course of wastewater treatment consists of the two process steps nitrification and denitrification, which take place in the aeration tank. In the nitrification process, ammonium is oxidised to nitrate; with denitrification, nitrate is reduced to elemental nitrogen, which escapes into the air. If upstream denitrification is not possible for space reasons or if the existing denitrification is not sufficient to meet the required limit values, downstream denitrification in the HUBER Sandfilter CONTIFLOW® can be applied. Denitrification takes place in the anoxic biofilm that builds up on the filter bed material of the HUBER Sandfilter CONTIFLOW ® . Denitrification does not require oxygen but easily degradable carbon. As a carbon source, e.g. methanol can be added via an external dosing station.[...]

[...]Optimisation of existing treatment concepts through adapted machine technology Industries that produce wastewater with above-average pollution levels must either pre-treat it before discharge into the sewer or treat it completely biologically before it can be returned to water bodies. The relevant regulations result from the Water Resources Act, or from local statutes and environmental legislation. Since these industries can usually provide wastewater treatment with comparatively few resources, necessary optimisations are often not undertaken, and this is reflected in particular in increased operating and maintenance costs. Process Technology HUBER solutions for reduction of operating costs Regular evaluation of the plants often reveals a wide range of optimisation and cost-saving potentials: Optimisation of the mechanical preliminary treatment system Installation or optimisation of chemical-physical wastewater treatment Installation or optimisation of secondary treatment (filtration, flotation) Use of wastewater heat In principle, the more solids and organic matter that can be removed by mechanical and physico-chemical processes, the lower the operating costs of wastewater treatment. In contrast, aerobic treatment is significantly more expensive because of the energy costs. In case of high amounts of dissolved organic matter, anaerobic treatment may also be useful. HUBER has suitable machine technology and long experience in industrial wastewater treatment. Thus, previously undiscovered potential for improvement can be uncovered. Prior laboratory and pilot tests are used to determine the potential very precisely in advance. In principle, the entire HUBER product portfolio is used, but especially the HUBER Dissolved Air Flotation Plant HDF , the HUBER Screw Press Q-PRESS® , as well as the HUBER Disc Filter RoDisc® and the HUBER Pile Cloth Media Filter RotaFilt® .[...]

[...]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 .[...]