Аннотация:The modern state of the most water bodies and coastal zones does not comply with the standards. Water pollution indicates the need for water treatment systems. For this goal, the proposed were used of biological engineering structures with higher aquatic vegetation – bioplato (floating plant islands). The cleaning process occurs due to the natural ability of a number of living organisms and plants to absorb, decompose and recycle pollutants. Despite the enormous advantages as by as: Simplicity, cost-effectiveness and efficiency, implementation of floating bioplato systems are not conducted. Therefore, the use of bioplato is considered as the newest approach in the tasks of prevention and assistance in the cleaning of water bodies and is the most natural approach. The following innovative solutions are used for the successful functioning of the bioplato: Special platform mats made of polymeric nonwoven materials that do not adversely affect the environment and are favorable for the life of living organisms; frame retaining structures made of lightweight, durable and corrosion-resistant composite material (glass composite, polymer composite), to which fastening is provided for retention in flow conditions; populated strains of native destructor microorganisms; additional attachment of cleaning devices from the newest highly porous carbon fibers for adsorption of suspended particle. In the course of the experiment, a set of successively placed containers, carrying out self-flowing overflow of wastewater containing certain concentrations of heavy metals and petroleum products was assembled. The imitation biosystem of the plant – microorganisms was represented by rhizomatous plants of the Iridaceae and Typhaceae family, represented Tipha Gracilis and Iris Pseudacorus L. and anaerobic microorganisms. A comparative analysis was made of data from the control group of plants and the working group. Also, data on the dynamics of cleaning bioplato on individual components and its combined action with the use of prolonged-action biologics and chelate complexes depending on the temperature profile, various regimes circulation of water flows and aeration. The magnitude of bio – and phytomass needed for wastewater treatment has been revealed. The result was investigated the effects of various agents stimulating the extraction (accumulation) of plant contamination at various concentrations of heavy metals and petroleum products. As a result, working approaches were obtained for the creation of highly efficient mobile combined floating bioplato adapted for the climatic zone of central Russia. A method of “building up” the root system was also proposed, which yields significant results from an active bacterial film necessary for cleaning wastewater. Creation of the process of degradation in the autumn-winter period through the use of strains of anaerobic microorganisms in the aggregate action with prolonged-action biologics.