Ekaterina Todorova1, Vania Kyoseva2

1University of Forestry – Sofia; 2University of Chemical Technology and Metallurgy – Sofia

One of the main pollutants in the waste waters from the paper production and recycling are the suspended solids. Experiments with the waste waters from the paper-mill Kostenets – HHI AD are done. The result from the use of different flocculants is compared. It is compared the effect from the flocculants from the ORGANOPOL 1583 and POLIFLOC 4352 series. The possibilities and conditions for achieving of the ecological standards for purification of waste waters from the pulp and paper industry using flocculants from the ORGANOPOL series. 

Ekaterina Todorova1, Evgeni Sokolovski2, Vania Kyoseva2

1University of Forestry – Sofia; 2University of Chemical Technology and Metallurgy – Sofia

The wastes from the hospital institutions and the wastes generated from the significant number private clinics, dental surgeries, consulting rooms and the other structures of the health services and veterinary medicine should be classified as dangerous wastes because they are a very serious threat for the human's health and the environment. The SWOT analysis of the installations for incineration of hospital wastes (Multi-profile Hospital for Active Medical Treatment Alexandrovska and Military Medical Academy), the microwave installations (Multi-profile Hospital for Active Medical Treatment and Emergency Medicine N.I. Pirogov) and the treatment installations using vapour (Multi-profile Hospital for Active Medical Treatment Tsaritsa Joana) shows that the humans' health and environmental care requires in each regional centre to be built at least one installation for thermal treatment of the wastes deriving from the human and veterinary medicine. 

Ekaterina Todorova1, Evgeni Sokolovski2, Vania Kyoseva2

1University of Forestry – Sofia; 2University of Chemical Technology and Metallurgy – Sofia

The different industrial sectors generate about 860 000 t of dangerous wastes yearly, which because of the lack of specialized landfills and installations for their treatment are kept in the relevant enterprises in specialized places or stores. Despite that in medium-term and long-term aspect it could be predicted a decrease in both quantities of dangerous wastes generated and content of dangerous substances in the wastes, a particular attention must be paid to the following wastes: mercury lamps, luminescent lamps, old-stock and expired vegetable protection preparations, transformers and condensers containing spent oils polluted with polychlorinated biphenyls. The building of a complex of installations for dry (thermal) and wet (hydro technological) treatment of the dangerous wastes at national level is a public responsibility – a care for the humans' health, environment and the sustainable development of the country.

Radi Ganev, Georgi Godiniachki, Daniel Nikolov

Higher School of Civil Engineering Lyuben Karavelov – Sofia

The report enters the problems, concerning thermo-electric power-station waste. Chemical compositions content is specified and compared to that of a Romanian thermo-electric power-station waste. Ecological problems, referring to the scrap-yards, are taken into consideration. The report deals with the ash feasibility in road and subterranean building.

Yordanka Georgieva

University of Forestry – Sofia

As one of the prime natural sciences Physics lies in the heart of scientific knowledge and constitutes a major element of the culture of the new post-industrial man. Physics undeniably plays a role in the comprehension and rationalization of the ecological problems and way towards their elimination.

In the course Physics with Biophysiscs for ecologist an attempt is made not only at conveying the necessity for certain degree of knowledge in the physic properties of matter in its different forms, as substance and field, but also at constructing a comprehensive picture of the natural processes and phenomena as parts of a single organism through an entirely new method of structuring the lectures. The relationships between this course and other fundamental and specialized courses are also highlighted.