Редакционен коментар
И.
Симеонов
3
I. Човек и биосфера
Съвременни ландшафти и степен на тяхната
антропогенизация в част от горното поречие на р. Лом,
картографирани с ГИС на базата на GPS, спътникови и
наземни данни
Зорница Чолакова, Даниела Аветисян, Екатерина Иванова, Румен
Недков
4-12
Малки и средни предприятия и околна среда
Н. Чипев, С. Петкова, Г. Райчевски, К.
Костадинов
13-18
Как беше съхранена местната екосистема при
строителството на ВЕЦ „Чорштин-Ниджица” в Южна Полша
Франчишек Швитала
19-23
II. Технологии за
пречистване
Повърхностно-активни съединения: същност,
видове и роля в опазване на околната среда
Анна Сотирова, Ирина Лазаркевич, Данка
Гълъбова
24-34
Сезонен ефект върху биоразграждането на отпадни
води от мандри чрез свободни и имобилизирани бактериални
клетки
С. Чаман, А. Бхардвай
35-39
Установяване ефекта от биошлам получен при
анаеробно разграждане на смес от свински тор и отпадъци от
плодове и зеленчуци
Елена Златарева, Светла Маринова, Росица Тончева, Вера
Петрова, Снежанка Михайлова
40-44
III. Биоинформатика и
биоавтоматика
Математическо изследване на ролята на
метаногенният и на хидрогенотрофният ета-пи върху
продуцирането на биомeтан от ор-ганични отпадъци
Иван Симеонов, Александър Крумов
45-51
IV. Възобновяеми
източници на енергия и биогорива
Влияние на инерционния момент върху
сле-денето на точката на максимална мощност при вятърна
турбина с двойно захранен асинхронен генератор
Владимир Лазаров, Захари Зарков, Людмил
Стоянов
52-58
Интензификация на производството на
био-етанол и въздействието му върху околната среда
Антон Стоянов, Кънчо Лахчев
59-68
V. Научни форуми
Трети конгрес по вирусология (Дни на вирусологията в
България), Институт по микроби-ология „Ст. Ангелов“ – БАН,
25-27 октомври 2012 г.
69-70
VI. Юбилей
Акад. Ячко Иванов на 80 години
71-72
СЪВРЕМЕННИ ЛАНДШАФТИ И СТЕПЕН НА ТЯХНАТА АНТРОПОГЕНИЗАЦИЯ В ЧАСТ ОТ ГОРНОТО ПОРЕЧИЕ НА Р. ЛОМ, КАРТОГРАФИРАНИ С ГИС НА БАЗАТА НА GPS, СПЪТНИКОВИ И НАЗЕМНИ ДАННИ
Зорница Чолакова, Даниела Аветисян, Екатерина Иванова, Румен НедковCONTEMPORARY LANDSCAPES AND THEIR ANTHROPOGENIC STAGE IN PART OF THE UPPER LOM RIVER BASIN, MAPPED BY GIS ON THE BASE OF GPS, SATELLITE AND GROUND DATA
Zornitza Cholakova, Daniela Avetisyan, Ekaterina Ivanova, Roumen Nedkov
МАЛКИ И СРЕДНИ ПРЕДПРИЯТИЯ И ОКОЛНА СРЕДА
Н.
Чипев, С. Петкова, Г. Райчевски, К. Костадинов
SMALL AND MEDIUM ENTERPRISES AND THE ENVIRONMENT
Nesho Chipev, Sonya Petkova, Georgi Raichevski, Кostadin Kostadinov
Summary:. Small and Medium
Enterprises (SME) can play a key role in the economics of most
countries. EUROSTAT registered roughly 20 million SMEs,
corresponding to 99.8% of all enterprises in Europe employing
almost 70% of the European workforce and producing close to
60% of the overall turnover from manufacturing and services.
In Bulgaria more than 98% of all enterprises are SMES. They
can have a significant cumulative effect of the environment
via their activities, product and services. Reducing the
environmental impact is a challenge to SMEs all over Europe.
Surveys showed that SMEs are not mass-engaged in environmental
management. The relationships and environmental problems of
Bulgarian SMEs in the sectors Metal Production, Surface
Treatment, Chemical Industry, Electric and Electronic
Components, and Textile Industry were studied using the
inquiry approach. Regional Inspectorates for Environment and
Waters (RIEW) were asked to provide information on the
environmental performance of controlled by them SMEs in the
sectors studied. Analyzing the results was found that 33.3% of
them had a person responsible for environmental matters who
was staff member. Most SMEs declared that they had some
form of environmental policy (77.8%) and another 11% were
willing to develop such policy. None of the interviewed
SMEs had introduced Environmental Management System. However,
some 44.4% were recognizing the need to establish one.
The main conclusion from analyzes of information and data on
Bulgarian SMEs from the five sectors studied was that the main
problems in their environmental performance were related to
documentation operation and reporting obligations. Another
concern determined is referring to the lack of adequate
information and knowledge according to many interviewees.
Environmental Management System (EMS) is almost not applied at
all by SMEs. It is a burdensome process for SMEs to apply EMS.
One of the reasons for not applying EMS could be that it has
no economic effect and no reduction in the operating costs at
the present time.
Key words: SME,
environmental policy, chemical industry, textile, metal
production, surface treatment, electric and electronic
components, Environmental Management Systems.
КАК БЕШЕ СЪХРАНЕНА МЕСТНАТА ЕКОСИСТЕМА ПРИ СТРОИТЕЛСТВОТО НА ВЕЦ „ЧОРШТИН-НИДЖИЦА” В ЮЖНА ПОЛША
Франчишек
Швитала
MEAUSURES TAKEN TO PROTECT LOCAL ECOSYSTEM WHILE DEVELOPMENT OF POWER PLANTS IN THE CZORSZTYN-NIDZICA AREA
Franciszek Switala
Abstract: Paper presents
the methodology chosen for development of Czorsztyn-Nidzica
pumped storage power plants. Methodology complied with the
environmental requirements raised by the proximity of national
park. Dunajec river, which is the base for the project,
is a mountain river with high energy potential. Its flooding
potential is mostly noted in the lower situated areas. Water
quality in the Dunajec river is ranked 1st class regarding its
purity. Development of power plants secured lower situated
areas from flooding and created an energy production potential
of 158 428 MWh, out of which 7 885 MWh is obtained from
Nidzica power plant.
Keywords:
Czorsztyn-Nidzica, power plant, environment protection,
ecosystem
ПОВЪРХНОСТНО-АКТИВНИ СЪЕДИНЕНИЯ: СЪЩНОСТ, ВИДОВЕ И РОЛЯ В ОПАЗВАНЕ НА ОКОЛНАТА СРЕДА
Анна
Сотирова, Ирина Лазаркевич, Данка Гълъбова
SURFACE ACTIVE COMPOUNDS: STRUCTURE, PROPERTIES AND ROLE IN BIOREMEDIATION
Anna Sotirova, Irina Lazarkevich, Danka Galabova
Abstract: Environmental
pollution with low soluble organic compounds is a problem that
enlarged considerably in the recent years. Industry
contributes various kinds of contamination. The pollution with
organic compounds is of great concern especially because of
their toxic, mutagenic and carcinogenic effects on the living
organisms. Conventional methods to remove, reduce, or mitigate
toxic substances are not effective. Bioremediation is a
natural process which relies on bacteria, fungi, and plants to
alter contaminants as these organisms carry out their normal
life functions. Metabolic processes of these organisms are
capable of using chemical contaminants as an energy source,
rendering the contaminants harmless or less toxic products in
most cases. The low solubility of aliphatic and polycyclic
hydrocarbons significantly decreases their availability for
microbial cells. Many studies demonstrate that use of
surface-active compounds, most known as surfactants, is a
promising approach to promote changes in the cell surface
properties. Many surface active compounds are able to
interact with the cell surface interrupting its integrity in a
way to increase its permeability to low soluble compounds as
hydrocarbons. The surfactants are amphiphilic molecules and
their specific chemical structure induces special features.
The surfactants tend to increase the hydrocarbon solubility by
lowering the interfacial tension between the water phase and
the hydrocarbons. The critical micelle concentration (CMC) is
a basic characteristic of the surfactants. Under CMC they are
in monomeric state and the monomers tend to interact directly
with the microbial cells and with the hydrocarbons. Above CMC
they form structures called micelles by which the surfactants
actively sollubilize the hydrocarbons and thus increase their
bioavailability. Chemically synthesized surfactants are
broadly used in the industry and for domestic purposes, as
well as in the scientific research. Recently of special
interest are the microbial surfactants (biosurfactants). They
have several advantages over chemical surfactants such as
lower toxicity, higher biodegradability and structural
diversity.
Keywords: surfactants,
biosurfactants, bioremediation, microbial cells.
СЕЗОНЕН ЕФЕКТ ВЪРХУ БИОРАЗГРАЖДАНЕТО НА ОТПАДНИ ВОДИ ОТ МАНДРИ ЧРЕЗ СВОБОДНИ И ИМОБИЛИЗИРАНИ БАКТЕРИАЛНИ КЛЕТКИ
С.
Чаман, А. Бхардвай
SEASONAL EFFECT ON BIODEGRADATION OF DAIRY EFFLUENT BY FREE AND IMMOBILIZED BACTERIAL CELLS
S.Chaman and A.Bhardwaj
Abstract: The limitations
in the physico-chemical methods make the biological methods
favorable alternatives for the removal of pollutants from the
industrial effluents. In the present study 9 bacterial strains
were isolated from dairy effluent collected from Verka Milk
Plant Mohali in two different seasons. Strains A3 and A11were
identified as Pseudomonas sp. and Bacillus sp. through
morphological and biochemical tests. Preliminary experiments
with all 9 strains were carried out, using free and
immobilized cells. Highest COD (39.18% and 28.17%) and BOD
reduction (40.54% and 58.33%) were obtained by two isolates,
A3 and A11 respectively (The initial COD concentration was
177.6 mg/l and 185.6 mg/l and reduced to 108 mg/l and 133.3
mg/l and the initial BOD concentration was 37 mg/l and 39.6
mg/l and reduced to 22 mg/l and 16.5 mg/l). The electrical
conductivity, salinity were found to increased to a
considerable extent by A11 and A3 while total dissolved solids
were found to decreased to a considerable extent by A3 and
increased by A11. Maximum reduction was observed from
bacterial isolate of November as compared to August due to the
seasonal effect.
Key words: biodegradation,
dairy effluent, immobilized cells, Pseudomonas sp., Bacillus
sp.
УСТАНОВЯВАНЕ ЕФЕКТА ОТ БИОШЛАМ ПОЛУЧЕН ПРИ АНАЕРОБНО РАЗГРАЖДАНЕ НА СМЕС ОТ СВИНСКИ ТОР И ОТПАДЪЦИ ОТ ПЛОДОВЕ И ЗЕЛЕНЧУЦИ
Елена
Златарева, Светла Маринова, Росица Тончева, Вера Петрова,
Снежанка Михайлова
ESTABLISHMENT OF THE EFFECT OF DIGESTATE PRODUCED IN ANAEROBIC DEGESTION OF MIXTURE OF PIG MANURE AND WASTED FRUITS AND VEGETABLES
Elena Zlatareva, Svetla Marinova, Rositca Toncheva, Vera Petrova, Snezanka Mihailova
Abstract: Production of
large amounts of wastes threatens the environment. The effort
for their management and usage is part of searching for a way
for reduction of pollution and mitigate the climate change.
The interest in biogas production from organic waste is great.
Usage of biogas replaces natural sources for energy
production. This reduces emissions of CO2, CH4, NO2 and
contributes to reduction of global warming. The secondary
biomass (digestate) represents a valuable fertilizer, which is
rich in nitrogen, phosphorus, potassium and micro elements and
can be used in agricultural practices as organic reserve.
The aim of present study is to determine the effect of
digestate derived from model installation for biogas
production with addition of pig manure and waste from markets
as a feedstock in greenhouse experiments.
Different percentage participation (5, 15, 25 and 35 %) of
digestate from the weight of soil is tested. The experiments
are conducted on two different soil types – Fluvisols and
Vertisols. The test indicator is winter barley crop. The
results show that barley has the best growth and quality in
the variant with 25 % digestate.
Key words: bioslаme,
biogas, greenhouse experiments, barley.
Иван Симеонов, Александър Крумов
A MATHEMATICAL STUDY OF THE IMPACT OF METHANOGENIC AND HYDROGENOTROPHIC STEPS ON BIOMETHANE PRODUCTION FROM ORGANIC WASTES
Ivan Simeonov, Alexander Kroumov
ВЛИЯНИЕ НА ИНЕРЦИОННИЯ МОМЕНТ ВЪРХУ СЛЕДЕНЕТО НА ТОЧКАТА НА МАКСИМАЛНА МОЩНОСТ ПРИ ВЯТЪРНА ТУРБИНА С ДВОЙНО ЗАХРАНЕН АСИНХРОНЕН ГЕНЕРАТОР
Владимир
Лазаров, Захари Зарков, Людмил Стоянов
INERTIA INFLUENCE ON MPPT OPERATION OF A WIND TURBINE WITH DOUBLY FED INDUCTION GENERATOR
Vladimir Lazarov, Zahari Zarkov, Ludmil Stoyanov
Abstract: This paper
presents a study on the influence of the mechanical inertia on
the maximum power point tracking (MPPT) control of a wind
turbine with a doubly fed induction generator. The models of
system elements are presented and the control systems
functions are described. The realized Matlab model is
validated with experimental bench with a dSPACE microprocessor
system. The inertia moment influence is studied by different
simulation, illustrated by different figures of the system
variables and we conclude that the construction realization
has to provide a compromise between the MPPT control stability
and the influence on the electrical grid.
Keywords: Wind
generator, maximum power point tracking, inertia influence
ИНТЕНЗИФИКАЦИЯ НА ПРОИЗВОДСТВОТО НА БИОЕТАНОЛ И ВЪЗДЕЙСТВИЕТО МУ ВЪРХУ ОКОЛНАТА СРЕДА
Антон Стоянов и Кънчо ЛахчевINTENSIFICATION OF BIOETHANOL MANUFACTURING AND ITS IMPACT ON ENVIRONMENTAL
Anton Stoyanov and Kantcho Lahtchev