Abstract
Siberian surface water and groundwater are characterized by low temperatures for a long year period. Many groundwater sources’ organic composition are formed of soil and peat humus, marsh feeding of rivers, decomposition of plankton, higher water, and soil grass in reservoirs and lakes. Organic colloids in natural waters and in humic substances give the color of water. It’s yellowish coloration of varying intensity. Thus, the Om River’s water color in the city of Kuibyshev in the Novosibirsk Region is 500 degrees with feculence of less than 3 mg/l. A number of underground water sources also have an increased content of organic contaminants caused by peat bogs at great depths and high water colority with low turbidity. For example, the water color is up to 1500 degrees in the Namtsy village of the SAHA-Yakutia Republic. In addition, underground water and, to a greater extent, surface water are often characterized by a high content of iron (up to 20 mg/l), manganese (up to 4 mg/l), and other impurities of natural and anthropogenic origin. Iron and manganese are in natural waters in the form of mineral or organic complex compounds of humic or some fatty acids. In the second case, these waters are with increased oxidizability and rather aggressive nature. In particular, the iron content is 3 mg/l, manganese is 1 mg/l, the permanganate oxidizability is 50 mg/l in the water of the Om River.
Highlights
Traditional technologies for natural water preparation into drinking water are not designed to purify the original water with color over 120 degrees
The problem of low-temperature, low-turbidity, high-colored waters preliminary cleaning is partially solved by the use of clarifiers-recirculators, where a part of the formed sediment from the suspended layer is ejected into the initial water and their flakes serve as additional centers for condensation of the hydrolysis products
The positive role of the granular medium lies in the fact that the flocculation processes take place in a closed pore space, where the collision probability of coagulated suspension particles significantly increases, and both stick to each other and to previously formed aggregates with clarification of low- turbid, colored waters, weakly mineralized waters with long periods of low temperatures
Summary
Traditional technologies for natural water preparation into drinking water are not designed to purify the original water with color over 120 degrees. [1]. The problem of low-temperature, low-turbidity, high-colored waters preliminary cleaning is partially solved by the use of clarifiers-recirculators, where a part of the formed sediment from the suspended layer is ejected into the initial water and their flakes serve as additional centers for condensation of the hydrolysis products. This allows increasing the productivity of clarifiers by 30-60% and to process water with color up to 300 deg. The rate of purified water flow does not exceed 0.8 mm / s and the performance of the clarifier-recirculator remains low at low temperatures and turbidity of the initial water up to 20 mg / l [2]
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call