International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Adequate and timely protection of the people and the infrastructure necessary increase efficiency in liquidation of the consequences of chemical, radiological and biological agents. CBRN decontamination teams are using decontamination technique to minimize exposure to hazardous agents and limit the spread of contamination. The disposables decontamination means and methods are very divers, and an evaluation of the most appropriate aspects often encountered in the real cases could determine the adequate organization approach to be used.

The report examines the security environment in recent years in both NATO and the Republic of Bulgaria, the challenges they face as a result of international terrorism and, in general, from hybrid threats. The natures of the hybrid threats and the guidelines for limiting and overcoming them have been examined.

The situation changes in territory of our country lead to change in nature and importance of security factors and threats. Threats of technogenic nature for national security were analyzed. The factors for risk assessment of the impact of anthropogenic accidents on the security environment are presented.

The threats to the modern security environment from radiological materials are explored. The possible scenarios for radiological impact from open and / or closed radioactive sources and nuclear weapons and the degree of potential danger are analyzed. The psychological effects of the population are examined. The role of state policy in radiological threats is stated.

Dangerous wastes are solid, liquid or gaseous materials that may be lethal or dangerous to humans and the environment. Such wastes can be toxic chemicals and flammable or radioactive substances, including industrial waste from chemical plants or nuclear reactors, agricultural waste, pesticides, fertilizers, medical waste or hazardous household waste such as toxic dyes or solvents. CBRN waste should be safely recycled without harm to the environment. Toxic chemicals, radioactive substances or biological materials should be concentrated for final disposal.

The object of the paper is the solid water. The water is a model pollution with calcium dichloride. We used complexonometric method to determine the hardness. We have analysed the amount of softener influencing the hardness of the water, which is used to decontaminate humans.