Analiza zasobów mieszkaniowych w gospodarstwach agroturystycznych województwa kujawsko–pomorskiego
ANALYSIS OF THE RECOURCES HOUSING OF AGROTOURISM FARMS, TAKING KUJAWSKO–POMORSKIE PROVINCE AS AN EXAMPLE
When
one starts running the agrotoursit service, the level of housing
condition the housing potential is very important. The estimation of
what one has and what is the technical condition of that lets us prepare
the offer well and estimate its capacity. The researches made in the
area of kujawsko–pomorskie voivideship have shown, that material
resources are satisfactory. The profitable part of the area of these
facilities, the satisfactory standard of lodging, the supremacy of the
rented guest houses in the hosts’ building and having old style
architecture were indicated. The analysis revealed that in the village
countryside, the new–built houses are most common, and these do not have
a kind of ‘village atmosphere’ and countryside style.
Key words: agrotourism, recources housing, lodging potential
J. Cichowska str. 3
Badania nad technologią oczyszczania wód balastowych
RESEARCH ON BALLAST WATER TECHNOLOGY
Ballast
water contains numerous organisms belonging to different ecological
formations (plankton, neuston, nekton and benthos) which represent
species characteristic for the place of water intake. These organisms
discharged with ballast water in other ports create a real and proven
danger for local ecosystems and people living in coastal area.
This
paper presents results of investigations, in laboratory scale, on
selected chemical and physical methods of ballast water treatment. The
investigations were conducted on selected standard organisms.
Effectiveness of biolethal preparation Unisteryl which could be applied
as an agent for chemical treatment of ballast water was determined in
dependence on the preparation concentration, water salinity, period of
contact and temperature. Effect of ultrasounds, as a physical method of
plankton organisms killing versus time and vibrations amplitude was
investigated. It was found, that Unisteryl in concentration of 50ppm is
sufficient to kill bacteria and zooplankton but is not very effective
for phytoplankton. Ultrasounds are effective in 100% for zooplankton but
their disintegrating action on phytoplankton and bacteria is
insufficient.
Performed studies are the first stage, in microscale
of works leading to development of multi-stage system (filtration,
chemical treatment and ultrasounds) of ballast water treatment on ship
with the use of an active preparation.
Key words: ballast water, biodiversity, marine environment, ballast water treatment
H. Modrzejewska, M. Walk, M. Bartoszewicz, M. Michalska str. 9
Bakterie redukujące siarczany (BRS) w procesach bioremediacji gruntów
SULFATE REDUCING BACTERIA (SRB) IN SOIL BIOREMEMEDIATION PROCESSESES
This work presents the role of sulfate reducing bacteria (SRB) in soil
bioremediation with special consideration of bioavailable heavy metals
detoxication process. Authors brought attention to advantages of
bioremediation proceeded with SRB participation compared to conventional
physicochemical processes like liming. Research suggest that biological
processes are usually more efficient in removal of bioavailable heavy
metals occurring in low concentrations. SRB not only provide sulfide
ions for heavy metals precipitation, but also speed up the precipitation
of metal sulfides, which are insoluble in environmental conditions.
Taking the opportunity authors also discussed techniques and methods of
biological soil purification using soil bacteria, which are sulfate
reducing bacteria. That allows to choose the technology feasible for
application in rendering harmness chemical contaminants, which cause
loss of ecological balance.
Key words: sulfate reducing bacteria, detoxication, remediation, bioremediation, phytoremediation
M. Biegańska, F. Domka str. 18
Czy dzikie gęsi zagrażają jakości wód Jeziora Góreckiego
w Wielkopolskim Parku Narodowym?
DO WILD GEESE ENDANGER THE QUALITY OF WATER IN GORECKIE LAKE (WIELKOPOLSKI NATIONAL PARK)?
The
effect of the presence of wild geese spending winter on Lake Goreckie
in the Wielkopolski National Park on the fertility of the lake water was
analysed. In late autumn and winter the lake is the site of presence of
two species of goose: bean and white–fronted goose (Anser fabalis and
Anser albifrons). The study was performed in the southern basin where
the geese are not observed and in the north–western basin, which is the
site of their night stay. The water parameters measured in the field
were: temperature, oxygenation, pH and conductivity. The parameters
determined in laboratory conditions included ChZT, organic nitrogen,
ammonium, nitrate and nitrit, orthophosphates and total phosphorus.
Moreover, bacteriological analysis of water was performed, including
determination of the content of coli bacteria, and the influence of
geese on the amount of sediment matter measured in sediment traps was
analysed. Measurements were performed in the period of the birds’
presence and for the sake of comparison in the period prior to their
arrival. The concentrations of the biogenic substances determined in the
lake water in the subsurface layer at both basins in the period of the
birds’ presence were higher but comparable to those determined before
the birds arrival. This observation was explained by analysis of
seasonal vertical distribution of biogenic substances in the water
column. In the period of summer thermal stratification, the
concentrations of biogenic substances in surface layer were very low,
while in meta– and hypolimnion they were much higher. In late autumn,
when the birds come for wintering, the concentrations of the biogenic
compounds equalise as a result of water circulation and the
concentration of these substances in the surface layer increases.
According to the microbiological study, the concentration of bacteria
only from coli type of the north–western basin was higher. In general,
the results have shown that the presence of wild geese staying for the
wintering on Góreckie Lake did not have a significant effect on the
quality of water. The opinions claiming otherwise are unjustified. The
trophic status of the lake is determined to a much greater degree by the
release of biogenic substances from bottom sediments and their
introduction to circulation in autumn.
Key words: protected area, lake, eutrophication, geese wintering, sediment trap
T. Sobczyński, T. Joniak str. 29
Modernizacja oczyszczalni ścieków Miejskich Wodociągów sp. z o.o. w Chojnicach – efekt ekologiczny
MODERNIZATION OF THE SEWAGE–TREATMENT PLANT OF THE MIEJSKIE WODOCIĄGI IN CHOJNICE – ECOLOGICAL EFFECT
The
paper presents detailed characteristics of the sewage–treatment plant
in Chojnice. Methods of waste refinement (mechanical and biological) as
well as composting process are also discussed. In recent years the waste
composting technology in Chojnice was modernized, resulting in
improvements in both quality and amount of produced compost. Table
presenting amount of assumed ecological effect due to waste composting
is also included.
Key words: sewage–treatment plant, Chojnice, ecological effect, compost, Biogleb
R. Majewski, J. Senetelli, S. Peryt–Stawiarska str. 35