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Activated Sludge - 100 Years and Counting covers the current status
of all aspects of the activated sludge process and looks forward to
its further development in the future. It celebrates 100 years of
the Activated Sludge process, from the time that the early
developers presented the seminal works that led to its eventual
worldwide adoption. The book assembles contributions from renowned
world leaders in activated sludge research, development, technology
and application. The objective of the book is to summarise the
knowledge of all aspects of the activated sludge process and to
present and discuss anticipated future developments. The book
comprises invited papers that were delivered at the conference
"Activated Sludge...100 Years and Counting!", held in Essen,
Germany, June 12th to 14th, 2014. Activated Sludge - 100 Years and
Counting is of interest to researchers, engineers, designers,
operations specialists, and governmental agencies from a wide range
of disciplines associated with all aspects of the activated sludge
process. Authors: David Jenkins, University of California at
Berkeley, USA, Jiri Wanner, Institute of Chemical Technology,
Prague, Czech Republic.
- questions how bureaucracies conceive of and consequently interact
with nature, and suggests that our managed public landscapes are
neither entirely managed nor entirely wild - questions which kinds
of human influence, conceived of in the widest possible sense, will
produce ideal environments for future generations, and who gets to
choose - draws on the author's experience as an objective scholar
and over 10 years working as a practitioner in federal land
management agencies - will be of great interest to students and
scholars of natural resource management, policy and politics, and
professionals working in environmental management roles as well as
policymakers involved public policy and administration.
- questions how bureaucracies conceive of and consequently interact
with nature, and suggests that our managed public landscapes are
neither entirely managed nor entirely wild - questions which kinds
of human influence, conceived of in the widest possible sense, will
produce ideal environments for future generations, and who gets to
choose - draws on the author's experience as an objective scholar
and over 10 years working as a practitioner in federal land
management agencies - will be of great interest to students and
scholars of natural resource management, policy and politics, and
professionals working in environmental management roles as well as
policymakers involved public policy and administration.
Through a curated selection of quotations, images and interviews,
Filmmakers on Film reveals what matters most to the masters.
Discover how the giants of filmmaking - from Sofia Coppola to Agnes
Varda - developed their distinctive visual styles, the core ideas
that underpin their practice and, most importantly, what their
films mean to you.
The Activated Sludge (AS) Process is old technology but is still
widely adopted worldwide for its convenience and simplicity: an
impressive number (many hundred of thousands) of this kind of
system are in operation. Occasionally, problems such as bulking and
foaming occur, causing regulation violations and large investment
is often required immediately to control them. For this reason, an
intense research effort has been made during the last few decades
to face these problems, and this report details the work undertaken
by the IWA Specialist Group on Activated Sludge Population
Dynamics. This Scientific and Technical Report describes the main
reasons fslyuor the growth of the different filamentous
microorganisms in activated sludge, and the biological molecular
tools available today for the identification of the main biomass
components. The wide range of experiences around the world is
documented and the methods to avoid the proliferation of these
organisms are presented and critically reviewed. Activated Sludge
Separation Problems consists of seven chapters, presenting
up-to-date technical and scientific aspects of these processes.
Scientific and Technical Report No. 16
Anaerobic/aerobic (AnA) and completely aerobic (CA)
laboratory-scale sequencing batch reactors operating on an acetate-
and casamino acids-based synthetic wastewater were used to
investigate the suitability of the AnA process for treating
nutrient?deficient wastewaters in plants that have stringent
effluent nutrient requirements. Of particular interest is the case
where phosphorus (P)-deficient wastewaters with highly variable
influent COD loading are being treated to meet both effluent TSS
and P limits. At a 4 d mean cell residence time, AnA activated
sludge had an approx. 20% lower P requirement than CA activated
sludge. The difference between the end-of-aerobic cycle
polyhydroxyalkanoate and carbohydrate contents of the sludges
indicated that the AnAsludge used more influent carbon than the CA
sludge for synthesis of non-P-containing storage products. The
nitrogen requirements of AnA sludge were similar to those of the CA
sludge. The AnA and CA SBRs were subjected to three different
transient influent COD loading patterns that simulated (#1) daily
COD Loading fluctuations, (#2) low weekend COD loading, and (#3)
extended low COD loading periods. During the Loading Pattern #1
experiment, the average effluent soluble P concentrations for the
AnA and CA SBRs were 0.4 and 1.0 mgP/L respectively, and complete
removal of influent acetate was observed. During the Loading
Pattern #2 experiment, the average effluent soluble P
concentrations for the AnA and CA SBRs were 0.3 and 0.9 mgP/L
respectively, but effluent acetate was detected during the first
high COD loading cycle following the low weekend COD loading
period. During the Loading Pattern #3 experiment, the VSS content
of both reactors dropped sharply, effluent acetate breakthrough
occurred, and effluent P concentrations exceeding 1 mgP/L were
detected in both the AnA and CA SBRs. Based on these findings, the
AnA process has potential as a technologically and economically
superior alternative for wastewater treatment plants treating
P-deficient wastewasters to meet stringent effluent TSS and P
limits. This publication can also be purchased and downloaded via
Pay Per View on Water Intelligence Online - click on the Pay Per
View icon below
This set gathers together key writings which chart the formative
years of insurance and reviews important stages in the history of
the subject from contemporary perspectives.
This set gathers together key writings which chart the formative
years of insurance and reviews important stages in the history of
the subject from contemporary perspectives.
This set gathers together key writings which chart the formative
years of insurance and reviews important stages in the history of
the subject from contemporary perspectives.
This set gathers together key writings which chart the formative
years of insurance and reviews important stages in the history of
the subject from contemporary perspectives.
The most common activated sludge operating problems causing poor
plant performance are related to solids separation. Especially
common are bulking and foaming. Without a proper scientific
foundation to support the efforts of wastewater treatment plant
management, many attempts to thwart bulking and foaming have
failed. Manual on Solving Activated Sludge Bulking, Foaming, and
Other Solids Separation Problems provides the critical scientific
and practical underpinnings needed to understand and combat these
problems. The third edition of this flagship text is a
comprehensive, concise guide to the microbiological and technical
aspects of controlling all types of solid separation problems. The
scientific theory is applied to real-world scenarios, greatly
increasing the number of real-world examples of successful control
methods. New information is also included on filamentous organism
growth and its application in the control of sludge bulking and
foaming. Now plant operators, regulators and wastewater engineers
have a complete guide for battling these formidable design and
operating problems.
Do your performance measures seek primarily to detect and control
undesirable activities, rather than sharing and rewarding
productive behaviour? Every organisation needs to measure its
performance and that of the people it employs; David Jenkins shows
you how to make more productive use of such measures. For measures
to be accurate and reliable there are fundamental rules that need
to be applied. Ignoring or misapplying them undermines performance
and impedes the achievement of the corporate goal. For any
enterprise, data must be available across the whole spectrum of
activity in which it is engaged. The quality of that information
will depend on the way it is measured. In some commercial
organisations data is regularly gathered at local level. Instead of
being used at this point, it is often fed into a corporate
information system which, having recycled it, issues the result in
a form that does not always meet needs. In Measuring Performance,
David Jenkins examines the more traditional measures of performance
and highlights their shortcomings as well as assessing the merits
of the alternative approaches that are currently available. The
book concludes with a step-by-step guide to reviewing the
effectiveness of your organisation's existing systems for measuring
performance and identifying ways of improving them.
This set gathers together key writings which chart the formative
years of insurance and reviews important stages in the history of
the subject from contemporary perspectives.
This set gathers together key writings which chart the formative
years of insurance and reviews important stages in the history of
the subject from contemporary perspectives.
This set gathers together key writings which chart the formative
years of insurance and reviews important stages in the history of
the subject from contemporary perspectives.
This set gathers together key writings which chart the formative
years of insurance and reviews important stages in the history of
the subject from contemporary perspectives.
This set gathers together key writings which chart the formative
years of insurance and reviews important stages in the history of
the subject from contemporary perspectives.
One of the greatest treasures in the archives of the Welsh
Industrial and Maritime Museum is the Hansen Collection, consisting
of over 4500 negatives of shipping taken at Cardiff Docks between
1920 and 1975. Lars Peter Hansen, a native of Copenhagen, settled
in Cardiff in 1891 and he and his third son Leslie established a
photographic business in the docks; taking pictures of ships for
sale to seamen and shipowners was an important part of their
business. Following the retirement of Leslie Hansen in 1975, the
museum purchased the negative collection. Its historical value
cannot be overstated and this album is intended as a tribute to the
Hansens, who through their work have bequeathed to Wales a
pictorial record of shipping activity at the nation's premier port.
Gynaecological textbooks are divided into sections according to
pathological diagnoses, not according to symptoms or symptom
complexes. Students of gynaecology, because they initially acquire
information from textbooks are conditioned by the organisation of
these texts to think of gynaecology in terms of pathological
entities rather than symptom complexes. Gynaecological patients,
however, do not present complaining of endometriosis or endometrial
malignancy or hypophyseal-ovarian dysfunction; rather, they present
with symptoms such as 'pain low down in the tummy', 'bleeding from
the front passage', or 'irregular periods'. This book attempts to
help students of gynaecology (including everyone from students
learning the subject for the first time, through family doctors, to
doctors of all grades) to approach their patients as people as
distinct from pathological entities, to listen to them, and to
communicate with them. In order to help achieve this, the text is
divided according to symptoms or related groups of symptoms. Within
each division, pertinent questions are listed in the words that
might be used in addressing a patient, followed by a key explaining
the significance of the questions and a brief discussion of the
problems under consideration. It is hoped that this apPfQach will
facilitate the taking and interpretation of case histories, thus
aiding differential diagnosis and clinical management, and will
initiate the process of self-teaching. The book tries to emphasise
that, especially in gynaecology, the same symptom (e. g. , heavy
periods) may have a very different significance in different
patients in terms of diagnosis and management.
The imaging aspects of radiography have undergone con many sources
and was in general freely given when requested siderable change in
the last few years and as a teacher of and this is gratefully
acknowledged. In particular I would radiography for many years I
have often noticed the lack of a like to express my sincere thanks
for help and information to comprehensive reference book for
students. This book is an Mr J. Day of DuPont (UK) Ltd.
particularly for the infor attempt to correct that situation and I
hope this text will be mation and illustrations in the chapter on
automated film of value not only to student radiographers but also
prac handling; Mr D. Harper and Mr R. Black of Kodak Ltd.; tising
radiographers as well. Fujimex Ltd.; CEA of Sweden; 3M (UK) Ltd.;
Wardray Much of the information is based on personal experiment
Products Ltd.; D. A. Pitman Ltd.; Agfa-Gevaert; PSR Ltd. and the
knowledge gained of students' difficulties in studying for their
help with information on silver recovery, and this subject. I have
attempted to gather together in one book Radiatron Ltd. for their
help with safelighting. All were most all the information required
to understand the fundamentals helpful in my many requests for
information. of the subject both for examination and for practice.
Some To Mrs A. Dalton and Mrs P."
Human Papillomavirus: Proving and Using a Viral Cause for Cancer
presents a steady and massive accumulation of evidence about the
role of HPV and prevention of HPV-induced cancer, along with the
role and personal commitment of many scientists of different
backgrounds in establishing global relevance. This exercise
involved years of personal commitment to proving or disproving an
idea that aroused initial skepticism, and that still has difficult
implications for some. It remains one of the big successes of
medicine that exploited both established medical science dating
back to the nineteenth century and new molecular genetic science
during a time of transition in medicine.
From 1875 to the present day, the Cardiff and Bristol Channel
Incorporated Shipowners' Association has been the representative
body for shipowners in Cardiff and other Bristol Channel ports.
This study looks at some of the most representative periods in its
history: the reaction of the Association to the proposal to build
new docks in Barry in the 1880s, the Seaman's Strike in 1911, and
the schism which split the Association in 1912-14. David Jenkins
also reveals that a barrage across the estuary of the rivers Taff
and Ely was first proposed as early as 1920. Nothing came of that
proposal, but in 1929 a similar scheme was once more under
consideration, comprising a dam with two locks across the tidal
channel, between Penarth Head and Queen Alexandra lock.
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