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[...]Wanlip - Leicester, UK A HUBER Technology Wastewater Case Study HUBER Technology recently completed a project for Severn Trent Water at Wanlip STW on the outskirts of Leicester. This was a project that had been looked at for a long period of time but was commissioned in early 2020. Project Profile This project was part of the upgrade to the sites indigenous sludge treatment to replace ageing step screens, which were installed in the 1990’s. HUBER Technology were first involved in the project in the late 2000’s to see what options were available to improve the process. The challenge was to improve[...]

[...]Solutions for cost-efficient sludge dewatering Sewage sludge produced in municipal and industrial wastewater treatment plants requires dewatering prior to further treatment or utilisation. Rising costs for sludge disposal make it necessary to concentrate the sludge to a high solids content. Mechanical sludge dewatering is used to reduce the amount of sludge by separating sludge water. A more or less firm sludge cake is produced. Prior to its dewatering, fed sludge is first flocculated by addition of polymers (sludge conditioning). Sludge Conditioning Economic Sludge Dewatering For the economic [...]

[...]Great Britain Three recent installations are now helping poultry slaughterhouses to reduce their sludge disposal costs and remove their reliance on tankering sludge off site. Background With ever increasing sludge disposal costs and tightened restrictions on spreading sludge on land (particularly over the summer months), HUBER were approached to provide dewatering of the sludge on three poultry slaughterhouses. The sites had identified the potential for savings and wanted to evaluate treatment options. Since the three sites operate similar processes, a single trial was conducted to evaluate[...]

[...]Sludge Drying Cost reduction on sludge transportation and disposal costs. Efficient solutions to minimise the volume of sludge for disposal Wastewater sludge is dried to minimise its mass and to save sludge transport and disposal costs. Handling and storage of dried sludge is cost effective, and any further disposal and utilisation methods are possible. The dried product can be used as fertiliser, as well as fuel – the calorific value of fully dried sludge is similar to that of brown coal. Thermal energy from different energy sources Thermal drying involves the evaporation or vaporisation of [...]

[...]Efficient and reliable removal of coarse material from sludge For the operational safety of sludge treatment processes, it is advantageous if the sludge is as free as possible of coarse material and disturbing solids (e.g. paper, plastics, fibres and hair). Otherwise, repeated malfunctions of aggregates and processes may occur in pumps, but also during thickening, dewatering or drying, and these can be time-consuming and costly to rectify and require increased manpower. For the agricultural recycling practised in many regions of the world, it also makes sense to separate all solids such as [...]

[...]The HUBER STRAINPRESS® Sludgecleaner SP 430 was introduced 4 years ago in response to the number of projects that required multiple SP 290’s. Many of the 290’s STRAINPRESS® supplied would’ve been single units, but on the larger sites like Five Fords in Welsh Water required 4 SP 290’s, Minworth & Coles Hill in Severen Trent required 6 & 4 SP 290’s respectively. The capacity of the STRAINPRESS® SP 430 is just over double that of the SP290. The flow rate of the SP 430 with a 5mm basket @3% ds sludge is 160M3/Hr compared to 75M3/Hr on the SP 290. Cost savings can be made by: Reduced number of units [...]

[...]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[...]

[...]Mechanical sludge thickening to reduce sludge volume Before sludge with a very high water content is subjected to further treatment, it makes sense and is often necessary to reduce its volume by thickening. This also increases the solids content of the sludge. If sludge with a solids content of 1% is thickened to 6% solids, this gives a volume reduction of more than 80%. The thickening of the sludge is effected by separating sludge water; thin sludge becomes thick sludge, which is viscous but still pumpable. Sludge Volume Reduction Excess Sludge Thickening Sludge settles in gravity thickeners and is[...]

[...]Birmingham, England A HUBER Technology Industrial Wastewater Case Study HUBER Technology recently completed a project for the largest confectionery manufacturer in the UK at their site at Marlbrook between Leominster and Hereford. The project for Mondelez which own confectionery brand Cadbury was delivered following good early engagement to allow a successful project to be delivered. Project Profile This project was part of the upgrade to the sites effluent treatment plant to include for a provision of sludge dewatering capability on site. It involved removal of an existing redundant DAF [...]

[...]Plymouth + Maer Lane, Great Britain South West Water had been looking at alternative sludge dewatering technologies with lower TOTEX to potentially replace existing veteran centrifuge assets and tasked their preferred contractor Kier Utilities to offer solutions for the Plymouth Central and Maer Lane WwTW’s. HUBER worked closely with Kier Utilities, undertaking trials to demonstrate the HUBER Screw Press Q-PRESS® to South West Water operations who wanted to touch and feel the machine and satisfy themselves that the machine was simple, robust and easy to operate. The trial data not only satisfied[...]