FIELD: ecology.
SUBSTANCE: group of inventions relates to field of environment protection, namely to device and method of control of air pollution with nano-sized particles when they are emitted into atmosphere. Device for control of air pollution with nano-sized particles contains container with depositing substrate. Container is made from material possessing high heat capacity and chemically inert to atmospheric components. Upper part of container is covered with hermetic lid, inside container movable rod with support made from low heat-capacity material is placed. Depositing substrate is made in form of microdispersive chemically inert powder, which possesses increased active surface. Substrate is laid on support in thin layer. In upper part of lateral part of container there is a row of holes for formation of convective and turbulent air flows inside container. Method of control of air pollution with nano-sized particles lies in sedimentation of aerosols on depositing substrate. As substrate thin layer of microdispersive chemically inert powder, which possesses increased active surface is used. Before sedimentation gradient of temperatures between substrate and atmospheric air flow is created. Particle sedimentation is carried out on microporous quasi-surface formed by aggregates from microdispersive mineral particles and interlayers of capillary liquid. In order to form capillary liquid relative air humidity higher than 50% is created, and nano-sized particles are retained on substrate by action of molecular forces of vandervals type.
EFFECT: increase of quality and reliability of atmosphere state estimation in areas of enterprises which use nano-technologies.
6 cl, 1 tbl, 1 dwg
