Symposium Introduction

Household and industrial waste water are subjected to mechanical, physical and biological treatment. Biological treatment is the destruction dissolved organic matter by microorganisms. Water is passed through special tanks containing only the so-called activated sludge, in which includes the microorganisms oxidizing phenols, fatty acids, alcohols, hydrocarbons, etc.

Wastewater treatment does not solve all problems. Therefore, more and more companies adopting a new technology - a vicious cycle in which the purified water again comes into production. New technological processes allow to dozens of times to reduce the amount of water needed for industrial purposes. Protection subsoil consists primarily in preventing unproductive cost of organic resources in the integrated use. For example, many coal is lost in underground fires, combustible gas is combusted in flares the oil industry. Development of technology for integrated extraction of metals from ores can get additional valuable elements such as titanium, cobalt, tungsten, molybdenum, etc.

To increase agricultural productivity tremendously important correct agricultural and implementation of special measures to protect soil. For example, fighting gullies successfully conducted by planting -- trees, shrubs, grasses. Plants protect the soil from washing and reduce rate of water flow. Cultivation of gullies can use them economic purposes. Planting imported from America, amorphous, having a strong root system, not only effectively prevents soil erosion: the very plant produces beans with a high feeding value. The diversity of crops and plantings along the ravine promotes the formation of persistent biocenoses. In thickets settled birds, which is essential to pest management.