Sludge Dewatering Articles on Environmental XPRT

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 ...

Jan. 30, 2009

By Integrated Engineers Inc.

A review on sludge dewatering indices

Dewatering of sludge from sewage treatment plants is proving to be a significant challenge due to the large amounts of residual sludges generated annually. In recent years, research and development have focused on improving the dewatering process in order to reduce subsequent costs of sludge management and transport. To achieve this goal, it is necessary to establish reliable indices that ...

Mar. 7, 2016

By IWA Publishing

Dewatering of Industrial Sludge - Case Study

At Ten Cate Protect, town of Nijverdal, The Netherlands, 2006 During the wastewater treatment process at Ten Cate Protect large quantities of sewage sludge are liberated. A couple of days per week this sludge is transported in tanker trucks to a waste disposal plant. On June 14th 2005 a Geotube MDS unit was put in operation at Ten Cate Protect to separate and condense the sludge of the aerobic ...

Sep. 9, 2013

By TenCate Geosynthetics Netherlands bv

New processes for the improvement of sludge digestion and sludge dewatering

INTRODUCTIONThe examination of numerous sewage sludges from municipal wastewater treatment plants leads to the conclusion that on the one hand dewaterability of these sludges worsens and that on the other hand dewaterability of sludges becomes more and more important due to increasing disposal costs. Especially wastewater treatment plants with inflows from the food processing industry often face ...

Dec. 18, 2009

By Cambi Group AS

Simulation of sludge dewatering on belt filters

A mathematical model for belt filters was developed to determine optimum load rate and belt speed during drainage of flocculated biological sludge. Numerical simulations were performed for belt filters with and without plows, and the model fit experimental data well. Experiments showed that highly compressible cakes were formed during drainage, which was important. Due to cake compression, the ...

Jun. 1, 2010

By IWA Publishing

Geotube Dewatering for Lagoon Sludge - Case Study

Background In many animal waste management schemes it is desirable to separate solids from waste water and/or manures. In cooperation with the Department of Animal and Dairy Science, animal waste specialists from Biological and Agricultural Engineering are field testing a technology new to agriculture, to remove solids from lagoons. The test is currently being conducted at the UGA Dairy ...

Sep. 9, 2013

By TenCate Geosynthetics Netherlands bv

Influence of nanoparticles on the polymer-conditioned dewatering of wastewater sludges

The effect of using small-scale, high surface area, nanoparticles to supplement polymer-conditioned wastewater sludge dewatering was investigated. Aerobically digested sludge and waste activated sludge sourced from the Hunter Valley, NSW, Australia, were tested with titanium dioxide nanoparticles. The sludge samples were dosed with the nanoparticles in an attempt to adsorb a component of the ...

May 9, 2013

By IWA Publishing

Vermicomposting of dewatered sludge from pulp and paper mill

The present paper is aimed at conversion of dewatered sludge from pulp and paper mill into value added product through vermicomposting. The dewatered sludge was blended with cow dung and food processing waste in five different combinations R1 (1.5), R2 (1 + 0.24 + 0.26), R3 (1 + 0.34 + 0.16), R4 (1 + 0.41 + 0.09) and R5 (1 + 0.46 + 0.04) for utilisation in vermicomposting using Eisenia fetida. ...

Jan. 20, 2015

By Inderscience Publishers

Nitrification of centrate from dewatering of anaerobically digested sludge

Nitrification of anaerobically digested sludge centrate was studied in bench-scale suspended growth and fixed film enhanced suspended growth systems at temperatures of 10.5-28.5°C and pH values of 6.0-9.1. Nitrification followed zero-order kinetics in both systems, and ammonia removals in excess of 99% were observed. The temperature dependency of the suspended growth nitrification rate ...

Sep. 15, 2009

By Inderscience Publishers

Sludge Dewatering Performance - A Survey Of Real Operational Performance

Abstract. A survey of the literature revealed that it is difficult, indeed virtually impossible, to get meaningful information about the likely performance of dewatering equipment. As a consequence customers have sometimes specified impossible target performances and suppliers have unwisely agreed to them. Dewatering has major consequences for downstream processes, for example sizing dryers ...

Nov. 15, 2006

By Cambi Group AS

The arrangement that makes The New revolutionary Sludge Dewatering Separator

WHAT MAKES The New revolutionary Sludge Dewatering Separator so outstanding ? Hello Last week, has been the busiest in our history - The interest in our products has been overwhelming, especially from you here at “Environmental Expert”. We have received many inquiries regarding - What is so ...

Jul. 18, 2012

By Faroe Maritime Technic

Processing Wastewater Sludge Using Dewatering Containers

The relative cost of dewatering equipment varies widely and is directly related to the processing rate. For smaller utilities that need to dewater sludge in batches, dewatering containers are an alternative that can be relatively inexpensive and simple when compared to other technologies on the market. The most common type of dewatering container is based on a roll-off box design, although any ...

May 1, 2006

By Flo Trendï¿½ Systems, Inc.

Village of Maybrook, NY Sludge Dewatering System

Project Summary: The Village of Maybrook WWTP process consists of primary clarification, trickling filters, and secondary clarification. Primary sludge and trickling filter humus is anaerobically digested. The belt filter press dewaters the sludge eliminating the need for sludge drying beds. The belt filter press discharge cake solids are consistently in the 25 to 30 percent range, which is ...

Jun. 19, 2012

By BDP Industries

The Importance of Dewatering

With spring comes two things: the onset of construction season for most of our country and rain- lots and lots of rain. The unpredictability of storms and the amount of rainfall is all a guessing game. Jobsites flood, work stalls and projects get delayed. Rain makes it hard to keep dry and on-schedule. What’s the solution? Dewatering is a technique used to control ...

May 17, 2017

By Pac-Van, Inc.

Dewatering waste-activated sludge using dissolved gas-flotation followed by filtration

After the successes of flotation of waste-activated sludge (WAS), using the new technique utilizing CO2 gas as well as using model gas (80% N2+20% CO2) in previous research because of the high water solubility of CO2 gas, the aim of this study is to develop a simple method for dewatering WAS for easier reuse and safe disposal. The paper introduces a laboratory model for dewatering WAS in two ...

Jun. 1, 2010

By IWA Publishing

Phyto-dewatering of sewage sludge using Panicum repens L.

Experiments in the field environment have been conducted to study the growth of Panicum repens L., an aquatic plant, in the sewage sludge matrix. The experiments were also carried out to investigate the ability of this plant to dewater sewage sludge to increase the capacity of conventional drying beds. In addition, the ability of Panicum repens L. to reduce the sludge ...

Jan. 23, 2017

By IWA Publishing

Improved dewatering of CEPT sludge by biogenic flocculant from Acidithiobacillus ferrooxidans

Bioleaching using an iron-oxidizing bacterium, Acidithiobacillus ferrooxidans, and its biogenic flocculants was evaluated to improve the dewaterability of chemically enhanced primary treatment (CEPT) sewage sludge. CEPT sludge in flasks was inoculated with A. ferrooxidans culture, medium-free cells and the cell-free culture filtrate with and without the energy substance ...

Oct. 29, 2015

By IWA Publishing

Energy recovery from thermal treatment of dewatered sludge in wastewater treatment plants

Sewage sludge is a by-product generated from municipal wastewater treatment (WWT) processes. This study examines the conversion of sludge via energy recovery from gasification/combustion for thermal treatment of dewatered sludge. The present analysis is based on a chemical equilibrium model of thermal conversion of previously dewatered sludge with moisture content of 60–80%. Prior to ...

May 31, 2016

By IWA Publishing

Dewatering sludge, coming from the cellar of the Rijksmuseum with Geotube - Case Study

Foreword: In 1885, the first National Museum of Holland opened its doors in Amsterdam. The architect Cuypers designed the building in a mixture of both Gothic and Renaissance styles. Since the opening, the original building has been extended by the construction of new wings, and changes have been made to Cuypers' original design. An ongoing project to restore the Rijksmuseum ...

Sep. 13, 2013

By TenCate Geosynthetics Netherlands bv

Volute Dewatering Press reduces the sludge disposal cost by 75%! (CANADA)

PROBLEM Widely known company Cargill Meat Solutions was looking for a solution for their sludge processing issues.　Every day the thickened sludge had to be removed and the annual carrier cost was over $1,200,000. Furthermore, they needed to pay additional $20,000 for labor and handling ...

Jul. 1, 2011

By AMCON Inc.

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