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Planned actions are often directed on increase of efficiency of the existing gas-purifying installations that is very problematic, or on their replacement with devices of the same class with a little bigger efficiency and do not affect technological processes - sources of allocation of the polluting substances. It is expedient to solve environmental problems along with implementation of modernization and reconstruction of productions on the basis of introduction of waste-free and low-waste technological processes.

The ecological levers urged to stimulate rational environmental management are ineffective now. Costs of the processing and gas-purifying equipment are not comparable to the amount of payments for pollution of atmospheric air.

Despite all difficulties, the management of the tram and trolleybus enterprise tries to carry out works on increase of safety of transportations and decrease in noise influence of the transport: plans to make polishing of a rail cloth, welding of joints of rails, installation of 30 noise suppressors on a contact network of trams and trolleybuses (on extensions of fastening of a contact network to buildings).

It is undoubted that in pollution of a superficial drain considerably influence of losses from the atmosphere. Data on a substance prinos with atmospheric dust and its receipt in waterways with a suspension in a drain of thawed snow have a close order. But not all pollution which are dropping out of the atmosphere are washed away by a superficial drain that testifies to a significant role of not atmospheric sources in delivery of technogenic pollution in a storm drain.

Prompt development of land means of transport leads to that many streets, especially in old part of the city, do not accomodate it and, as a result any more: traffic jams, increase of pollution of the air environment and level of noise influence, increase in number of road accidents.

The superficial drain is the large supplier of the polluting substances due to washout of the top part of a soil cover, atmospheric loss, products of destruction of construction constructions, highways, washout of dumps, etc. Scattering in winter time on city roads of table salt leads to accumulation in snow of chlorides and salts of sodium. These connections when thawing snow with a superficial drain come to city reservoirs.

The redistribution of motor transport given above complicates work on collection of a payment for environmental pollution since relationship with owners of individual transport still is in full not determined by compensation of the harm done to them to environment.

With industrial drains oil products, phenols, mineral and organic suspensions, chlorides, sulfates, nitrates, ammonia, heavy metals, group difficult organomineralny chemical connection get to sewer system. The wide association of heavy metals in sewage is characteristic not only for traditionally "dirty" productions (for example, galvanic sites) where these elements are used in a production cycle, but even for food and light industry.

Nizhny Novgorod developed on border of Volga Hills and the Balakhna lowland that caused division of the city into two parts: The mountain, representing built-up territory of a radical plateau, and Zarechnaya where sites of terraces of Volga and Oka are mastered. Feature of planning structure of Mountain part is historically developed tendency of an arrangement of building of different type on the raised sites of mezhovrazhny plateaus, and also development of ravines by a zasypka, plannings and strengthenings of their slopes.

However, the natural mode of the main part of the water basin is broken, a drain overregulation by two water-engineering systems, intake of the polluted sewage is reduced by characteristics of hydrocapacity of the territory. The part of water weight is polluted in limit degree when natural processes of self-cleaning are not capable to cope with processing of harmful substances any more.