Last edited by Arashira
Tuesday, April 21, 2020 | History

4 edition of Anaerobic treatment of low strength leachate by sulphate reduction found in the catalog.

Anaerobic treatment of low strength leachate by sulphate reduction

Seema Naik

Anaerobic treatment of low strength leachate by sulphate reduction

  • 292 Want to read
  • 22 Currently reading

Published by National Library of Canada = Bibliothèque nationale du Canada in Ottawa .
Written in English


Edition Notes

SeriesCanadian theses = Thèses canadiennes
The Physical Object
FormatMicroform
Pagination2 microfiches : negative.
ID Numbers
Open LibraryOL14726203M
ISBN 100315743174
OCLC/WorldCa30072289

Treatment of a high-strength sulphate-rich alkaline leachate using an anaerobic filter Journal Article Wang, Z ; Banks, C.J. - Waste Management The research looks at the feasibility of treating an alkaline sulphate-rich leachate arising from the co-disposal of municipal solid waste with cement kiln dust by means of an anaerobic filter (AF).   Aerobic granular sludge has become an attractive alternative to the conventional activated sludge due to its high settling velocity, compact structure, and higher tolerance to toxic substances and adverse conditions. Aerobic granular sludge process has been studied intensively in the treatment of municipal and industrial wastewater. However, information on leachate treatment using Cited by: Treatment of high-strength dairy wastewater in an anaerobic deep reservoir: Analysis of the methanogenic fermentation pathway and the rate-limiting step. Water Research , 40 (19), DOI: / Yen-Hui Lin, Kwang K. by:


Share this book
You might also like
Gender and nation building in the Middle East

Gender and nation building in the Middle East

Theft of a heart

Theft of a heart

Dhuwal (Arnhem Land) texts on kinship and other subjects with grammatical sketch and dictionary

Dhuwal (Arnhem Land) texts on kinship and other subjects with grammatical sketch and dictionary

Dos and donts around the world

Dos and donts around the world

The Rohan Master

The Rohan Master

Language and thinking

Language and thinking

Marshal of France

Marshal of France

Reducing fire-related injury and death among the elderly

Reducing fire-related injury and death among the elderly

Showdown at Skeleton Flat.

Showdown at Skeleton Flat.

India, Pakistan, Nepal and Bangladesh

India, Pakistan, Nepal and Bangladesh

Pennsylvania Dutch and Their Furniture

Pennsylvania Dutch and Their Furniture

Inside the third world

Inside the third world

Exploration of new markets by small and medium sized firms.

Exploration of new markets by small and medium sized firms.

Seminar proceedings, management of bovine cancer eye, Aug. 30, 1978.

Seminar proceedings, management of bovine cancer eye, Aug. 30, 1978.

Caen

Caen

Anaerobic treatment of low strength leachate by sulphate reduction by Seema Naik Download PDF EPUB FB2

The present study was conducted to investigate the effectiveness of the sulphate-reduction pathway in the anaerobic treatment of landfill leachate. The effects of several COD/SO 4 ratios (keeping COD constant) and loadings on anaerobic filter performance were studied and compared with the results from anaerobic filters which followed the methanogenic by: A.

Donoso-Bravo, G. Ruiz-Filippi, R. ChamyAnaerobic treatment of low-strength wastewater with a high fraction of particulate matter in an unconventional two-phase ASBRs systemCited by: 2. Anaerobic treatment of leachate is a low-cost treatment technology. The use of anaerobic treatment by aged refuse bioreactor can achieve efficient and economical purposes.

The anaerobic pool can degrade the organic matter and reduce the COD concentration. In addition, with the intrinsic advantages of energy saving, reduced sludge yield, and production of biofuel, anaerobic process will be the favored green treatment technology for sustainable.

A L. three-chamber anaerobic baffled reactor (ABR) was used to evaluate the treatment of low-strength synthetic wastewater (chemical oxygen demand [COD] of. The anaerobic treatment of young landfill leachate in an anaerobic system allows the anaerobic stabilization to terminate which was initiated in the tip.

Anaerobic sequencing batch reactors (ASBR) can achieve solids capture and removal of organics in one vessel, eliminating the need for a by: Anaerobic sequencing batch reactor treatment of low strength wastewater Udeme James Ndon High-rate anaerobic reactor treatment of low-strength wastewaters 72 4.

The Anaerobic Sequencing Batch Reactor (ASBR) 93 and sulfate analysis 6. Solids 7. Gas analysis 8. Granulation V. RESULTS AND DISCUSSION A. Organic Removals Introduction in the technical design for anaerobic treatment systems.

Sanitary biogas systems • are efficient, hygienic and ecologically sound wastewater treatment Anaerobic treatment of high solids such as animal manure, biological sludge, nightsoil, etc. is commonly known as ^anaerobic digestion and Sulfate and sulfite reduction. Anaerobic Processes (Chapter 10) Used for treatment of sludges and high strength (usually > mg/L COD) waste waters Can now be used for dilute strength waste waters if a fixed film system is used 90% of new treatment processes in developing countries (i.e.

Mexico) are anaerobic. Advantages 1. Less energy required (no aeration needed) Size: KB. treatment in a conventional activated sludge process yields about 50% (or more) new sludge from the COD converted, which requires further treatment, e.g.

anaerobic digestion, before it is reused, disposed off or incinerated. The carbon/energy flow principles of aerobic and anaerobic Cited by: The treatment method showed efficient reduction of colour, COD, TOC and NH3.

iquids that collect in a landfill are called leachate and must be safely removed from the site for : Swarda Mote. Anderson et al.

() used a two stage anaerobic process to separate sulphate reduction and methanogenic processes in an attempt to reduce sulphide toxicity, while Zhou et al. () successfully overcame sulphur inhibition by adding FeCl 3 as a reactant when using anaerobic digestion for treating a sulphate-rich organic wastewater.

by:   The research looks at the feasibility of treating an alkaline sulphate-rich leachate arising from the co-disposal of municipal solid waste with cement kiln dust by means of an anaerobic filter (AF). This type of leachate with a high sulphate concentration is commonly prohibited for discharge to sewer and requires an on-site treatment by: Aerobic biological treatment of landfill leachate R.

Matthews, M. Winson & J. Scullion University of Wales Aberystwyth, Institute of Biological Sciences, Penglais, Aberystwyth, UK Abstract There is an ongoing need to treat leachates from landfills using approaches. Removal of sulphate and toxic elements from the leachate of a field landfill lysimeter (m3), containing municipal solid waste incineration (MSWI) bottom ash, was studied.

The leachate was treated in two parallel laboratory upflow anaerobic sludge blanket (UASB) reactors without and with ethanol as additional carbon by: 7. simulated reducing condition in lysimeters, providing for reduction of sulfate to sulfide which causes low concentration of leachate.

Chain and Dewalle () reported that the formation of metal sulfide under anaerobic condition effectively eliminated the majority of heavy metal in leachate.

Moreover, metalFile Size: KB. Treatment of a high-strength sulphate-rich alkaline leachate using an anaerobic filter Article in Waste Management 27(3) February with 23 Reads How we measure 'reads'. Until recently, biological treatment of sulphate-rich wastewater was rather unpopular because of the production of H2S under anaerobic conditions.

Gaseous and dissolved sulphides cause physical-chemical (corrosion, odour, increased effluent chemical oxygen demand) or biological (toxicity) constraints, which may lead to process by: The effect of sulfate addition on the stability of, and microbial community behavior in, low-temperature anaerobic expanded granular sludge bed-based bioreactors was investigated at 15°C.

Efficient bioreactor performance was observed, with chemical oxygen demand (COD) removal efficiencies of >90%, and a mean SO 2− 4 removal rate of %.Cited by: This study investigated the effect of organic loading rate (OLR) and sulfate loading rate (SLR) on landfill leachate treatment by a lab-scale anaerobic baffled reactor (ABR).

Landfill leachate contained a concentration of organic matter between and mg COD.L -1 and no detectable amounts of by: 1. Abstract Landfill leachate of Hong Kong was first treated by the upflow anaerobic sludge blanket (UASB) process. At C, pH – and a HRT of – days, the process removed 66–90% of COD in the leachate for loading rates of 1–g-COD/lday depending on the strength of landfill leachate.

Sulphate-containing wastewaters from the paper and board industry, molasses-based fermentation industries and edible oil refineries present difficulties during anaerobic treatment, leading to problems of toxicity, reduction in methane yield, odour and corrosion.

The microbiology and biochemistry of dissimilatory sulphate reduction are reviewed in order to illustrate the potential competition Cited by: Aerobic systems are suitable for the treatment of low strength wastewaters (BOD 5 anaerobic systems are suitable for the treatment of highly polluted wastewaters (BOD 5 > 4, mg L-1), which is usually not the case when stabilized leachates are by: 5.

@article{osti_, title = {Treatment of a high-strength sulphate-rich alkaline leachate using an anaerobic filter}, author = {Wang, Z and Banks, C.J.}, abstractNote = {The research looks at the feasibility of treating an alkaline sulphate-rich leachate arising from the co-disposal of municipal solid waste with cement kiln dust by means of an anaerobic filter (AF).

This type of leachate with a high. landfill leachate treatment by a lab-scale anaerobic baffled reactor (ABR). Landfill leachate contained a concentration of organic matter between and mg COD.L-1 and no detectable amounts of sulfate.

Reactors were started-up by feeding them with iron-sulfate at a SLR of g SO4 Lday-1 (4 weeks). Factorial. The main coagulants are aluminum sulfate, ferrous sulfate, ferric chloride and chlorine ferric sulfate (Amokrane et al., ). Flocculation is suitable for landfill leachate treatment due to its strength against low pH and high organics concentration in the leachate (Torretta et al., ).

EPA/b November EVALUATION OF LEACHATE TREATMENT Volume II Biological and Physical-Chemical Processes by Edward S. Chian Foppe B. DeWalle Environmental Engineering Department of Civil Engineering University of Illinois at Urbana-Champaign Urbana, Illinois Contract No. Project Officers Dirk Brunner James A.

Heidman Richard A. Carnes. Leachate from bark landfills can be treated biologically by simply using the landfill itself as an anaerobic filter. This is accomplished by recycling the leachate-reintroducing it below the upper surface of the landfill.

A requisite for the process is that the pH of the leachate remain. Anaerobic digestion is becoming increasingly popular in this age of high energy prices, and many more people are realising that whereas aerobic treatment systems consume large amounts of expensive energy, anaerobic digestion is a process which does the opposite.

Low strength wastes could be easily treated by aerobic treatment in much less time than do the anaerobic treatment. Aerobic treatments prove cost effective than anaerobic ones for low strength wastes. Anaerobic Membrane Bioreactor (AnMBR) for Treatment of Landfill Leachate and Removal of Micropollutants by Anh T.

Do A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy Department of Civil and Environmental Engineering College of Engineering University of South Florida. In this review paper, Anaerobic Membrane Bioreactor (AnMBR) is considering as highly efficient and reliable technology for organic material removal from wastewater with no additional energy requirement for aeration.

AnMBR is a combination of conventional anaerobic technology and modern membrane system. AnMBR is cost effective alternative technology with pros of anaerobic microbial activity Cited by: 3. Effect of high salinity on anaerobic treatment of low strength effluents.

In anaerobic treatment, it is obligatory to know the effect of potentially inhibitory compounds due to the fact that methane formation may retard severely and may proceed slower than organic acid production. Besides, one of the most convenient methods for leachate Cited by:   Anaerobic ammonium oxidation (Anammox), a promising biological nitrogen removal process, has been verified as an efficient, sustainable and cost-effective alternative to conventional nitrification and denitrification processes.

To date, more than full-scale anammox plants have been installed and are in operation, treating industrial NH4 +-rich wastewater worldwide, and anammox Cited by:   Three concentrations ( mM, mM, and mM) of sodium molybdate were added to continuously fed anaerobic upflow filters () treating a high-sulphate molasses wastewater which contained approximately g chemical oxygen demand/l and g sulphate/l.

Sodium molybdate ( mM) did not inhibit sulphate reduction by the filter. Higher concentrations ( mM and mM) Cited by:   Advances in the biological removal of sulphides from aqueous phase in anaerobic processes: A review.

Lorna Guerrero, a Silvio Montalvo, b César Huiliñir, b Jose Luis Campos, c Andrea Barahona, a Rafael Borja d. a Departamento de Ingeniería Química y Ambiental, Universidad Técnica Federico Santa María, Casilla V, Valparaíso, by: The enzyme dissimilatory (bi)sulfite reductase, dsrAB (EC ), that catalyzes the last step of dissimilatory sulfate reduction, is the functional gene most used as a molecular marker to detect the presence of sulfate-reducing microorganisms.

Phylogeny. The sulfate-reducing microorganisms have been treated as a phenotypic group, together with the other sulfur-reducing bacteria, for. industrial waste water treatment - Water treatment is used to optimize most water-based industrial processes, such as: heating, cooling, processing, cleaning, and rinsing, so that operating costs and risks are reduced.

Poor water treatment lets water interact with the surfaces of pipes and vessels which contain it. Steam boilers can scale up or corrode, and these deposits will mean more fuel. by the low strength sulfate. On the contrary, the removal was further up to %, which was accorded with the report (Gibson, ) that the presence of low strength sulfate had beneficial e ects on the anaerobic digestion.

However, when sulfate concentration was up to mg/L, the COD removal decreased to %. When up to The anaerobic process has been studied for the treatment of low-strength wastewater over the past two decades using various high-rate reactor schemes.

The schemes studied include the anaer obic filter (AF), the upflow anaerobic sludge blanket reactor (UASB), the anaerobic fluidized or expanded bed reactor (AFBR or AEBR), and more recently the.

Landfill leachate contains a large amount of organic matter and ammoniacal nitrogen. As such, it has become a complex and difficult issue within the water treatment industry.

The activated sludge process has been found to be a good solution with low processing costs and is now therefore the core process for leachate treatment, especially for nitrogen by: 9. The anaerobic oxidation of methane (AOM) is an important sink of methane that plays a significant role in global warming.

AOM was first found to be coupled with sulfate reduction and mediated by anaerobic methanotrophic archaea (ANME) and sulfate-reducing bacteria (SRB).Cited by: An external circulation sludge bed (ECSB) reactor was studied at full-scale (1, m 3) during anaerobic treatment of cheese and other dairy products industry wastewater (CWW).The latter was characterized by a high calcium content, therefore the study focused on the potential negative impact that calcium may have in the by: 3.