[...]Machines for Mechanical Sludge Treatment HUBER offers the complete program of mechanical sludge treatment equipment Screening - Thickening - Dewatering ... from one source Screening - Thickening - Dewatering ... from one source Machines for Sludge Screening Machines for Sludge Thickening Machines for Sludge Dewatering Sewage sludge is continuously generated on municipal and industrial wastewater treatment plants during the process of organic pollutant degradation. Adequate sludge treatment is required prior to disposal and a major pre-treatment step is to reduce disturbing solids and the water content of the sludge. Mechanical sludge treatment primarily comprises of the processes of sludge screening, thickening and dewatering. Following these mechanical treatment steps, further treatment can be implemented by drying of sewage sludge and later thermal utilisation .[...]
[...]Circular Grit Traps Separation of grit and other mineral materials transported with the wastewater with centrifugal force HUBER Circular Grit Trap HRSF Circular Grit Traps HUBER Vortex Grit Chamber VORMAX Circular Grit Traps Circular and vortex grit traps separate the grit from the wastewater with centrifugal force. Separation of the grit particles is supported by the rotational motion of the wastewater. Due to the radial rotation, the solids are very quickly collected within the centre of the grit chamber from where they can be separated and discharged.[...]
[...]Municipal Wastewater Treatment Innovative solutions for the protection of people and the environment We are specialists for various process steps in municipal wastewater treatment. We are specialists for various process steps in municipal wastewater treatment. Mechanical Preliminary Treatment HUBER Solutions for mechanical wastewater pre-treatment: Contaminants and solids contained in wastewater are removed by screens and fine screening systems as well as through sedimentation and separation processes. Advanced Wastewater Treatment The aim of advanced wastewater treatment is the reduction of one or more of the following pollutants: solids, COD, BOD, phosphorus, nitrate, micropollutants and germs. Elimination of Trace Substances HUBER offers solutions for the elimination of trace substances and micropollutants from wastewater with granulated activated carbon (GAC) and powdered activated carbon (PAC). Sludge Treatment HUBER offers highly efficient and comprehensive solutions for sludge treatment, from mechanical pre-treatment with screens to drying and incineration. Screening in Pumping Stations Reliable screening and solids removal for pumps and lifting units at combined and separate sewer systems. HUBER pumping station screens maintain the operating stability of the pumps and protect them against interfering substances. We are experts in municipal wastewater treatment and liquid-solid separation as well as sludge treatment. We have a comprehensive range of machines and equipment for wastewater treatment plants. Our products and solutions have demonstrated their performance and reliability at wastewater treatment plants of every size – from small WWTW to extremely large WWTW. We are keen to engage with our customers as early on in the planning process as possible to ensure that the correct solution is provided. We are partners to our customers and support them in meeting the required treatment performance. Schematic drawing: Overview of a municipal sewage treatment plant Schematic drawing: Overview of a municipal sewage treatment plant We provide solutions for the following fields of municipal wastewater treatment: Mechanical Pre-Treatment : As the first stage of wastewater treatment, HUBER provide – Coarse and fine screening Combined screening Screenings handling Packaged inlet works Advanced Wastewater Treatment : To safely meet increased requirements for the quality of the treated wastewater, there are various processes for reducing and eliminating solids, phosphorus, nitrogen and trace substances . Screens for Pumping Stations : Specific screens and screening systems ensure the operational safety of pumping stations and lift stations.[...]
[...]Mechanical Preliminary Treatment Removal of foreign matter from raw wastewater and sludge Good mechanical pre-treatment protects the subsequent process stages from clogging, blockages, deposits and abrasion. Good mechanical pre-treatment protects the subsequent process stages from clogging, blockages, deposits and abrasion. Solids Separation with Screens and Fine Screens The separation of solids from wastewater with screens is the first step in municipal and industrial wastewater treatment. HUBER has developed a wide range of different screens, fine and ultra-fine screening plants which are in use thousands of times worldwide. Screenings Treatment Wash presses are the optimum solution for the treatment of screenings. By adding washing water and mechanical energy, faeces and suspendable organic matter are washed out and dewatered. Weight reduction also decreases screenings disposal costs. Grit and Fat Removal For reasons of the operational safety of wastewater treatment plants, it is necessary to remove the grit contained in the wastewater. HUBER offers different types of grit traps for this purpose, which can separate grit, fine grit as well as grease. Treatment of Grit from Sewage Treatment Plants Grit washing has become an established process for the treatment of grit from grit chambers over the last decades. HUBER grit washing plants have been in operation worldwide for more than 25 years and have set the standard for modern and efficient processing of grit from wastewater treatment plants to produce a valuable product for reuse. Replacement for Primary Settling Tanks The HUBER CarbonWin® process replaces the primary clarifier with a fine screen. With the same separation efficiency, only 10% of the area is required compared to a primary settlement tank. Removal of foreign, disturbing materials and solids from wastewater Mechanical preliminary treatment is a prerequisite for reliable, low-wear and low-maintenance operation of the entire wastewater treatment plant. With mechanical wastewater treatment, foreign matter and solids in the wastewater are removed by screens and fine screening systems as well as through sedimentation and separation processes. The removed materials such as screenings, grit or primary sludge are fed to subsequent treatment stages. As experts with decades of worldwide experience, we have the optimal solution for every mechanical pre-treatment task: Solids separation with screens and fine screening systems Screenings treatment Grit and grease separation Grit washing Replacement for primary settlement tank FAQ Frequently Asked Questions What is the first stage of wastewater treatment? The first stage of wastewater treatment is the mechanical treatment stage, also known as mechanical pre-treatment or mechanical wastewater treatment. Here, mechanical processes are applied to remove pollutants from the wastewater. The following machines, plants and structures are used in these mechanical processes: Screens for the separation of organic and inorganic larger solids Grit chambers for the separation of grit and mineral substances Sedimentation tanks, so-called primary clarifiers, for the separation of finer solid wastewater components or, alternatively, special screening machines replacing the primary clarifier, such as the HUBER Drum Screen LIQUID . Why is mechanical pre-treatment of wastewater important? Wastewater to be treated in a municipal wastewater treatment plant contains a variety of substances, which may be present in dissolved or undissolved form. The undissolved substances, i.e. the solids, can be organic or inorganic. The size of the solids also varies greatly, as wastewater not only contains small solids such as sand, but can also contain solids very large in size. Everything that can enter a sewer system will eventually end up at the sewage treatment plant. The mechanical treatment stage therefore has the task, as the first stage of wastewater treatment, to remove these solids, as they would interfere with or hinder the second stage of wastewater treatment, the biological stage. What is the cleaning capacity of mechanical pre-treatment? Mechanical wastewater treatment can remove about 30% of the pollutants in wastewater. At first, screens remove mainly larger solids such as plastic parts, hygiene articles, stones, etc. The subsequent grit chamber separates grit, which is always present in municipal wastewater. The primary clarifier, either in the form of a primary settlement tank or a mechanical screening system, then separates finer solid organic and also inorganic wastewater pollutants. Videos Video: Complete wastewater treatment at the Øygarden WWTP in Norway Video: Mechanical preliminary wastewater treatment Video: Mechanical preliminary wastewater treatment at a municipal WWTP Video: Complete wastewater treatment at the Øygarden WWTP in Norway Pointing-the-way, highly efficient wastewater treatment with HUBER Technology - one of the most modern wastewater treatment plants in Norway Video: Mechanical preliminary wastewater treatment Example: municipal WWTP Weiden, Germany Video: Mechanical preliminary wastewater treatment at a municipal WWTP Example: WWTP Zwickau, Germany[...]
[...]Machines for Screenings Treatment Optimal screenings treatment systems for any application Wash Presses Screenings Compactor Screenings treatment with high dewatering efficiency and maximum washout degree The first step in wastewater treatment is normally the removal of solids from the wastewater flow by means of screens. The removed screenings contain household waste, faecal matter, toilet paper and mineral solids. The screenings volume depends, not only on the separation size of the screen, but also on the type of sewer system. The solids content of municipal screenings varies between 10 % and 25 %, depending on the type of screen. Approximately 90 % of the solids are volatile (organic). Due to their very high water content, their heterogenous composition and unaesthetic appearance screenings must be treated before they can be disposed of. FAQ Frequently Asked Questions Which factors and framework conditions should be taken into account when planning a screenings treatment system? The following factors should be considered for a reliable and economic screenings treatment facility: Screenings volumes (average and maximum per h) Type of screenings (coarse screenings, fine screenings,...) Desired dewatering degree Desired washout degree Installation situation Feeding (directly under screen, screw conveyor, flume,...) Redundancy requirements Why is it useful to wash screenings? Due to the highly carbonaceous composition of the loaded wash water, the C/N ratio of the entire treatment plant influent is positively influenced. Depending on the screen aperture size and the inlet situation of the sewage treatment plant, the C/N ratio can be improved by up to 6 %, and thus the denitrification performance in the case of unfavourable nutrient ratios in the sewage treatment plant. After washing, the screenings are compacted so that the water content in the washed screenings is significantly reduced. As a result of washing out the faecal matter, a significant improvement in screenings dewatering is observed in many cases.[...]
[...]Grit Traps and Classifiers The best solution for any grit separation application Grit Trap and Classifier Product Groups Longitudinal Grit Trap Lamella Grit Trap Circular Grit Traps Complete Plants Grit Classifier For reasons of operating reliability of wastewater treatment plants it is necessary to separate grit, gravel and other mineral materials transported with the wastewater (an average of 60 l from 1000 m³ of wastewater according to DWA Work Sheet M369) from the digestable organic material. Good grit separation prevents operational problems, such as grit sedimentation in aeration tanks and digestors, reduces wear of subsequent equipment, such as pumps or stirrers, and avoids clogging of sludge hoppers and sludge lines. While as much as possible of the mineral matter should be removed, as much organic matter as possible should remain in the wastewater. Testing of the grit capture rate is usually done with a grit particle size of 0.2 mm. The most common grit separating systems in use are grit channels, circular grit traps and vortex grit traps. Grit is either separated by gravity sedimentation (grit channels) or centrifugal force (circular and vortex grit traps). FAQ Frequently Asked Questions What are the different types of grit chambers? Depending on the type of grit trap, they separate the grit either by gravity (grit channels, lamellae separators) or centrifugal force (circular and vortex grit traps). Scraper blades or screw conveyors are often used to clear a grit channel. Solids removal in the further course of the process is effected by pump, grit classifier or integrated grit classifying screw. HUBER grit traps are available in many different designs. How are grit chambers designed and dimensioned? According to Kalbskopf, the design of aerated grit chambers is always based on the retention time of the wastewater in the grit chamber. Unaerated grit chamber systems are always dimensioned according to the surface loading rate. What is the quantity of grit in municipal wastewater? The DWA Code of Practice M369 specifies an average amount of grit trap material of 60 l per 1000 m ³ of wastewater.[...]
[...]Machines for Sludge Thickening All common methods of sludge thickening with disc thickeners, screw thickeners and filter belts HUBER Disc Thickener S-DISC Machines for Sludge Thickening HUBER Belt Thickener DrainBelt Machines for Sludge Thickening HUBER Rotary Screw Thickener S-DRUM Machines for Sludge Thickening HUBER is able to offer all common methods of sludge thickening With regard to economical further treatment and disposal of sewage sludge, it is necessary to reduce the sludge volumes produced in the course of the wastewater treatment process. The volume reduction is achieved by separation of parts of the sludge liquor at different points in the sludge treatment process chain. The main field of application of thickening systems is volume reduction of primary and excess sludge prior to stabilisation. HUBER offers belt thickeners as well as screw thickeners and disc thickeners as filtration units. The seletion of the most suitable technology for individual applications depends on project-specific parameters, such as throughput capacity or operating and investment costs, but also on other criteria, such as operating reliability, flexibility and process complexity.[...]
[...]Machines for Sludge Dewatering Reliable and efficient methods of sludge disposal by means of screw presses and belt filter presses HUBER Screw Press Q-PRESS® Machines for Sludge Dewatering HUBER Screw Press S-PRESS Machines for Sludge Dewatering HUBER Bogenpress B-PRESS Machines for Sludge Dewatering However you plan to dewater your sludge - HUBER has the suitable solution! Sludge produced in municipal and industrial wastewater treatment plants requires dewatering prior to further treatment or utilisation. In view of increasing sludge disposal costs it has become necessary to concentrate the sludge to a high solids content. HUBER offers for this purpose commonly known systems for continuous sludge dewatering, e.g. belt filter presses and screw presses. It is the wide range of products combined with many years of experience that enables HUBER to select the best suited technology for each individual application. HUBER dewatering units stand for optimum performance, high product quality and long life combined with easy operation and maintenance.[...]
[...]Plants for Thermal Sludge Treatment Sewage Sludge Drying and Mono-Incineration Sludge Turner for Solar Drying Cold Air Dryer Belt Dryer Disc Dryer The existing and future challenge in sewage sludge treatment is to process the dewatered sewage sludge with further process steps to such an extent that safe disposal or even economic use is possible. With our machines and plants, we provide customised solutions. Reducing the water content of the sewage sludge by drying reduces the resulting disposal costs considerably. Sludge Drying is energy intensive. The energy demand of available drying systems varies, as well as their operation and end product quality. The most suitable system is selected for each individual sewage treatment plant. HUBER can select the right drying solution for any application and specific conditions.[...]