Figure 11. Technological scheme of iron removal from water
1 – reception pool; 2 – aeration pool; 3 – reaction pool; 4 – decanter; 5 – clean water pool; 6 –
biosorption; 7 – aerator; 8 – drainage storage
І – incoming of sewage contaminated with iron; ІІ – treated water
The application of these methods of water purification from iron compounds
provides a high degree of purification with the simultaneous disposal of formed sludge,
which allows to create a low-waste water desalting technology.
CONCLUSION
Creation of highly effective low-waste technologies for iron removal from
wastewater involves the use of plant wastes as effective sorbents and physicaland
chemical methods.
The process of absorption of iron on the vegetal wastes of the food industry was
studied and sorption mechanisms were proposed.
The results allowed to determine the optimal conditions for the use of sorption,
aeration methods for demineralization of wastewater from iron compounds, which
allows to provide the maximum degree of removal of the pollutant from aqueous
solutions.
The dependence of the residual concentration of iron in the investigated water on
the time of aeration during the iron removal by its simplified aeration method was
established. The processes of iron removal from water in an electrolyzer with flat
anodes were studied. It was shown that the proposed methods of water purification
reduce the residual iron concentration to values less than 0. mg/dm
3
, as required by
current norms.
Based on the results of the study of sorption, non-reactive, electrochemical
methods of water purification from iron compounds, scientifically based, effective low-
waste technologies for the purification of water for the purpose of obtaining purified
water were developed, contributing to the improvement of the ecological situation.
Thus, the application of innovative technologies allows us to achieve a significant
techno-economic-ecological effect that meets the requirements for advanced
technologies to ensure environmental safety.
І
1
2
6
7
3
8
4
5
І
ІІ
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