sludge storage Articles

  • Oil Field Sludge Dewatering

    An oil field contract dewatering company was unable to dewater the oily/water/solids from several oil field storage tanks using conventional coagulants/flocculants. The swings in solids loading and oil content made it very difficult to control the correct dosage rate as conventional chemistry has a very tight tolerance to maintain a dewaterable floc. The result was an ongoing blinding problem for ...


    By Integrated Engineers Inc.

  • CORK, Ireland: INNODRY 2E®–Complete sludge treatment solution including dewatering, drying and granulate storage

    Cork WWP (Ireland) was designed in 2000. The specifications did require a complete sludge treatment solution including dewatering, drying and granulate storage. The system was to take maximum advantage of the biogas produced by digesters as well as any surplus heat used for the heating of the digesters. The drying equipment had to be flexible in order to cover the varying production rates and, at ...

  • Genome-scale metabolic modeling to provide insight into the production of storage compounds during feast–famine cycles of activated sludge

    Studying storage metabolism during feast–famine cycles of activated sludge treatment systems provides profound insight in terms of both operational issues (e.g., foaming and bulking) and process optimization for the production of value added by-products (e.g., bioplastics). We examined the storage metabolism (including poly-β-hydroxybutyrate [PHB], glycogen, and ...


    By IWA Publishing

  • Heavy metal & hydrocarbon contaminated sludge

    Solidification of Heavy Metal & Hydrocarbon Contaminated Sewage Sludge Client: North Lanarkshire Council Project Managers: Jacobs Challenge: The former sewage treatment works were decommissioned in the 1970’s. It is thought that during the closure process, demolition material originating from the ...


    By Soilutions Ltd

  • Sludge Treatment and Disposal: Management Approaches and Experiences

     Abstract This report describes various methods of sludge treatment and disposal: it is intended for those charged with the task of determining the fate of sludge, providing them with the information necessary to select among action alternatives. Table of contents Introduction Background Sludge characterisation ...

  • Common Treatment Technologies for Radionuclides in Soil, Sediment, and Sludge

    Unlike organic contaminants (and similar to metals), radionuclides cannot be destroyed or degraded; therefore, remediation technologies applicable to radionuclides involve separation, concentration/volume reduction, and/or immobilization. The most commonly used treatment technology for radionuclides in soil, sediment, and sludge is solidification/stabilization (S/S). This treatment technology is ...

  • Effect of daylight on regrowth of bacteria in anaerobically digested sludge

    This study investigated the regrowth of total coliform, Salmonella, and Clostridium perfringens in anaerobically digested sludge after centrifuge dewatering in the presence and absence of daylight. Sludge cake and centrate samples were collected from a treatment plant, and half of the samples was stored in daylight and the other half was stored in dark for three weeks. The ...


    By IWA Publishing

  • Ammonia sanitisation of sewage sludge using urea

    The aim of the study was to develop a simple, low-cost treatment for sewage sludge using urea as a sanitising agent. Sewage sludge was spiked with Enterococcus faecalis and Salmonella typhimurium, treated with 0.5, 1, 1.5 and 2% w/w urea at laboratory scale, and the viability was monitored during 4 months of storage at 4, 10 and 22 °C (only 0.5%). A ...


    By IWA Publishing

  • Recovering oil from grinding sludge - Case Study

    Zahnradfertigung Ott uses RUF briquetting unit A large volume of sludge is produced in the grinding of high-precision gears. In most cases, this grinding sludge is disposed of at high costs. Zahnradfertigung Ott, a specialist manufacturer of gears, found a better solution: since 2005, the company is using a briquetting unit from RUF to recover 500 litres of grinding oil per day from the ...

  • Molecular Chemical Grinder Improves Digestion in Sludge

    Municipal wastewater treatment plants (WWTPs) can reduce the costs and liabilities of sludge handling and disposal and increase their organic solids conversion rate with the Advanced Fluidized Composting (AFC) Process or the Advanced Fluidized Co-Digeson & Co-Generaon (AFC2) Process from BioConversion Soluons, LLC (BCS). The conventional sludge treatment techniques of aerobic and anaerobic ...

  • Solidification / Immobilisation of hazardous waste for subterranean storage

    The use of subterranean salt mines for the final storage of inorganic hazardous waste is state of the art in Germany, and in fact most other European countries. However, the technical requirements to prepare the waste in an appropriate way are quite challenging. Over ten years ago econ supplied a plant to a salt mine in eastern Germany. The plant uses econ’s unique batch-wise working mixing ...


    By econ industries GmbH

  • Modeling of organic substrate transformation in the high-rate activated sludge process

    This study describes the development of a modified activated sludge model No.1 framework to describe the organic substrate transformation in the high-rate activated sludge (HRAS) process. New process mechanisms for dual soluble substrate utilization, production of extracellular polymeric substances (EPS), absorption of soluble substrate (storage), and adsorption of colloidal substrate were ...


    By IWA Publishing

  • Polyhydroxyalkanoate (PHA) production from sludge and municipal wastewater treatment

    Polyhydroxyalkanoates (PHAs) are biodegradable polyesters with comparable properties to some petroleum-based polyolefins. PHA production can be achieved in open, mixed microbial cultures and thereby coupled to wastewater and solid residual treatment. In this context, waste organic matter is utilised as a carbon source in activated sludge biological treatment for biopolymer synthesis. Within the ...


    By IWA Publishing

  • Advanced Aboveground Storage Tank Inspections – In-Service Robotics Tank Inspections

    This paper describes the advanced in-service tank inspection methods available for use in the inspection of aboveground storage tanks (AST) in the petroleum and petrochemical industry. ASTs are subject to several federal and state regulations requiring tank owners to perform tank floor/bottom integrity, seals system, and deck fittings inspections on a routine basis. The conventional procedure for ...


    By Trinity Consultants

  • Our Conical Cone Tanks Are Now WRAS Approved For Drinking Water Storage

    When it comes to quality, Enduramaxx is there. And our cone tanks (conical tanks) are no exception. We are proud to announce that they have just been granted WRAS certification. The Water Regulation Authority Scheme approval means that these tanks are approved for the storage of emergency water for human consumption. This means our cone bottom tanks can be used for applications for storage of ...


    By ENDURAMAXX

  • Kinetics of heterotrophic biomass and storage mechanism in wetland cores measured by respirometry

    Although oxygen uptake rate has been widely used in activated sludge for measuring kinetic and stoichiometric parameters or for wastewater characterization, its application in constructed wetlands (CWs) cores has been recently proposed. The aim of this research is to estimate the kinetic and stoichiometric parameters of the heterotrophic biomass in CW cores. Respirometric tests were carried out ...


    By IWA Publishing

  • Bristol WWTW solves sludge problems with large auger pump

    Built on the coast, Wessex Water’s Bristol Waste Water Treatment Works (WWTW) is the UK’s sixth largest works serving a population equivalent of 800,000 from Bristol and surrounding areas. To help comply with the EU Urban Waste Water Treatment Directive, Wessex Water has a Biodrier system at Bristol to transform two thirds of the site’s sludge into dry, odourless fertiliser granules. The W Range ...


    By NOV Mono - Mono Pumps Ltd

  • Surface active solutions tank cleaning & crude oil sludge removal

    For over ten years Surface Active Solutions has led the way in developing integrated microemulsion solutions for tank cleaning operations, crude oil sludge treatment and slops treatment. The company, with offices in Houston and Grangemouth (Scotland) aims to create real synergy in its approach to tank cleaning by combining its microemulsion chemistries with automated tank cleaning systems. The ...

  • Sludge suspension from numerous differing steel industry residues

    econ have been active for many years as a supplier of mixing units for the metal and steel industry. One of our long term clients requested that econ quote a system to produce a highly viscous suspension from nu-merous differing residues. The aim was to use this suspension as a protective layer inside the transport ves-sels of the hot, molten slag. Thus, a number of differing technical ...


    By econ industries GmbH

  • Large scale reality of sewage sludge paseteurisation and thermal hydrolysis

    ABSTRACT Two large scale projects have been successfully brought on line utilising the thermal pretreatment to ensure production of a Class A biosolid product. In Reading (UK), the sludge is pasteurised prior to mesophilic anaerobic digestion while in Dublin (Ireland), the sludge is both pasteurised and hydrolysed prior to digestion. Sludge is pasteurised by holding a batch of sludge at ...


    By Cambi AS

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