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UDC 628.321

Zhadan A. V., Kasatochkin A. S., Larionov S. Iu., Panteleev Aleksei, Riabchikov Boris, Shilov Mikhail

Testing VTI-M pilot high-rate lamella clarifier with microsand

Summary

In order to test and adjust in pilot mode the technology of enhanced water coagulation a VTI-M pilot high-rate clarifier with microsand was designed. The installation with a capacity of up to 30 m³/h is designed for the purification of surface, storm and waste water. It is constructed in such a way that the purification process can be carried out either with recycling of generated sludge or with the use of fine-grained sandy weighting material. VTI-M clarifier provides for the sustainable water quality that fully meets the requirements to the quality of water supplied to ion exchange desalination.

Key words

coagulation , coagulant , flocculant , microsand , clarifier , enhanced treatment , sand recycling , thin-layer block

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UDC 628.32

Larionov S. Iu., Panteleev Aleksei, Riabchikov Boris, Shilov Mikhail, Kasatochkin A. S., Zhadan A. V., Savochkin Andrei

Commercial tests of VTI-M high-rate horizontal clarifier enhanced with microsand

Summary

For the adjustment of enhanced coagulation technology on industrial scale a commercial VTI-M plant has been designed for the purification of surface and waste water as well as storm run-off. The design capacity of the plant is up to 300 m³/h. Enhancing the impurity sedimentation process is achieved using fine-grained sand weighting agent. Its subsequent washing off of the sludge is carried out in a pulse column which provides for reducing significantly the amount of secondary waste compared to the known analogues. The development of a new horizontal type clarifier was carried out on the basis of previous laboratory, pilot and experimental-industrial studies. VTI-M commercial clarifier consistently provides for the high quality clarified water that fully meets the requirements for the composition and quality of water supplied for ion-exchange desalination. During the testing period water was supplied for production needs. The use of the equipment package allows obtaining high quality water while reducing the consumption of acids and alkalis which in turn will reduce the discharge of salt waste and thereby reduce the harmful impact on the environment.

Key words

coagulation , coagulant , flocculant , microsand , enhanced treatment , sand recycling , water , commercial plant

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