№6|2018

DRINKING WATER SUPPLY

bbk 000000

UDC 628.161:628.169

Alekseev S. E., Shelest S. N., Захаров В. Р., Moor N. V.

Experience of retrofitting the technology of wash water utilization at the Omsk water treatment facilities

Summary

The main phases of addressing holistically the problem water source pollution with wastewater generated at the Omsk water treatment plant are considered. The results of technologic pre-engineering that provided for determining the optimal flow scheme of the treatment process and filter wash water reuse as well for defining the process parameters of combined treatment of river and wash water are presented. It is shown that the chemicals mainly used for drinking water purification can be used for filter wash water treatment. The studies were carried out by test coagulation method, i. e. by adding various amounts of polluted wash water and chemicals used at the water treatment plant into raw river water. The efficiency of combined treatment of river water is improving with increasing the amount of added polluted wash water. The design concepts and process flow scheme of water treatment that provided for constructing and commissioning filter wash water reuse unit with minimum capital expenditures are presented. The operating experience affirmed the correctness of the adopted process and design solutions. As a result the abstraction of raw river water was reduced by 9–13% and wash water discharge into the Irtysh River- the water source was completely abandoned. Wash water treatment is carried out together with raw river water at the water treatment facilities. Herewith the drinking water quality fully meets the requirements of Sanitary Regulations and Norms 2.1.4.1074-01.

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REFERENCES

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