Based on science development and technology innovation and dedicated to the improvement of water environment, our company is a high-tech environmental protection engineering company specialized in the research and development of water treatment equipment and technology, engineering contracting and the installation as well as the commission of the mechanical and electrical equipment. Besides, our company is the earliest and biggest high-tech environmental protection chemical enterprise dedicated in comprehensively researching and developing the environmental-friendly water treatment agents in China. The company is mainly engaged in the installation, modification as well as improvement of EPC projects regarding to water treatment companies in pakistan in the fields of electric power, industry, chemical industry, food processing, urban life and so forth.
Research and development and introduction and application of foreign top technology
CENTRAL WASTEWATER TREATMENT
The objective of waste water treatment is to reduce the concentrations of specific pollutants to the level at which the discharge of the effluent will not adversely affect the environment or pose a health threat. Moreover, reduction of these constituents need only be to some required level. Although water can technically be completely purified by distillation and deionization, this is unnecessary and may actually be detrimental to the receiving water. Fish and other organisms cannot survive in deionized or distilled water.
For any given wastewater in a specific location, the degree and type of treatment are variables that require engineering decisions. Often the degree of treatment depends on the assimilative capacity of the receiving water. DO sag curves can indicate how much BOD must be removed from wastewater so that the DO of the receiving water is not depressed too far. The amount of BOD that must be removed is an effluent standard (discussed more fully in Chapter 11) and dictates in large part the type of wastewater treatment required.