FIELD: ecological engineering, particularly river monitoring with taking into consideration river pollution with sewage water within the limits of cities and other inhabited localities.
SUBSTANCE: method involves choosing river observation points relative single pollution source or pollution source array; aligning one observation point with single pollution cross-section or pollution cross-section array; taking water samples; conservation the samples and preparing thereof for following analysis; cultivating test-organism, namely one-celled green algae - Chlorella vulgaris, inside cultivator at temperature of 36±0.5°; measuring optical density thereof in red light; analyzing and estimating the measurement results. The observation points are transversal to river and set in front of single sewage pollution source or sewage pollution source array, in center of each source and behind them. All three observation points are located within the limits of a city or other inhabited locality. The optical density is measured before and after one-celled green algae cultivation in water samples. After measurement termination overall river water pollution index is determined.
EFFECT: possibility to compare overall river water pollution index obtained in particular observation point with that obtained from pollution source on river bank; extended functional capabilities and extended range of application.
5 cl, 4 tbl
