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Выберите предложения, отражающие основное содержание текста.

Fair quality, Class 2 needs treatment to make potable water.

• Poor quality, Class 3 is moderately polluted water for industrial purposes.

• Bad quality. Class 4 stands for grossly polluted water. (1 750 п.зн.)

4. Составьте план текста.

5. Из приведенных слов и словосочетаний составьте предложения.

■ effective technologies, is fundamental for, wastewater treatment plants, an understanding of the waste-water nature, to select.

■ in many countries, of wastewater, discharges, are forbidden, uncontrolled.

■ public health, of waste-water management is, the ultimate goal, the protection of the environment, in accordance with, and socio­economic concerns.

■ generally, contains, untreated waste-water, high levels, nu­trients, numerous, of organic material, pathogenic microorganisms, and toxic compounds, as well as.

■ of water, the quantity, since, also, it, diluent, discharged, sewage treatment works, is, taken into consideration, dilutes, from.

6. Расшифруйте аббревиатуру терминов, например: G HG is a short form of/ stands for/ means greenhouse gases.

a) BOD; h) COD); с) TOC; d) TOD; e) UV.

· Physical parameters of water include colour, odour, temperature, and turbidity.

· Urban wastewater is the combination of fluid wastes originating in the sanitary conveniences of dwellings, commercial or industrial facilities and institutions.

· There are five water quality groups of classification.

· The ultimate goal of waste-water management is the environment protection in accordance with public health and socio-economic con­cerns.

· Recent evidence has demonstrated an unpredictable adverse im­pact on the natural biota if the water is reused.

· The wastewater nature is significant to select effective treatment technologies.

· Uncontrolled discharges of wastewater are forbidden in many countries.

ü Municipal wastewater is known to be the combination of water- carried wastes originating in the sanitary conveniences of dwellings, commercial or industrial facilities and institutions, in addition to groundwater, surface water and storm water with variations in water usage, which is affected by climate, community size, living standards, dependability and quality of water supply, water conservation re­quirements etc.

ü An urban water supply system cannot service its customers un­less there is a continuous supply of water to meet domestic consump­tion needs in the broadest sense and water needs for structural fire pro­tection.

ü Current proofs have shown that if the water is reused for drink­ing water, certain impurities in wastewater either hormones or synthet­ic materials are able to have an unpredictable impact on the natural biota and human beings as well.

Дата добавления: 2014-12-29