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

The efficiency of an adsorbent has been investigated for the removal of released textile dyes and micro-organisms during household textile laundering. The results show that laundering with the addition of the striped adsorbent and IEC A* detergent reduced the higher log step reduction of Sa (more than 4 log steps) compared to laundering without detergent (2.62 log step reduction), or laundering in a blind bath (1.61 log step reduction). The sorption efficiency of the functionalised nonwoven adsorbent is limited, capable of adsorption of a maximum of 0.1 g/L of reactive dye from the washing bath. Laundering in a bath of 20 °C, with the addition of a striped textile adsorbent or in combination with detergent IEC A*, does not prevent biocontamination of the washing bath and textile load.

The paper presents the results of testing of a high-performance method for decontaminating sewage, involving combination of ultrasonic and ultraviolet exposure at the final step of water purification aimed at destroying pathogenic microorganisms and thereby preventing the spread of infectious diseases.

A variation of the method was developed and patented by the authors and passed the test at one of the most advanced water facilities in Russia which is the Vodokanal of St. Petersburg. The combined unit was manufactured at OOO Novotech-EKO and installed at the South-West Wastewater Treatment Plant (SWTP) of Vodokanal of St. Petersburg.

The results of the test showed the efficiency of combined ultraviolet and ultrasonic wastewater treatment, both in terms of intensifying disinfection and in terms of the stability of the plant operation by preventing biofouling and salt deposition on the surface of the lamp casings. The latter fact was the basis for the pilot project of improvement of the existing system of UV waste water disinfection at the SWTP

The device is developed for aerosol sanitary processing of cattle which allows at the expense of a preliminary hydro jet sink and mechanical purification of the dirt which stuck to a surface of an animal, and also the automated consecutive supply of the washing and disinfecting liquid, to reach high-quality processing of cattle. It provides rational use of a preparation and reduces finally extent of environmental pollution.