| Autor: |
V N Kul’kov, Nguyen Tuan Anh, E.Yu. Solopanov |
| Jazyk: |
ruština |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Izvestiâ Vuzov: Investicii. Stroitelʹstvo. Nedvižimostʹ, Vol 1, Iss 24, Pp 168-174 (2018) |
| ISSN: |
2227-2917 |
| Popis: |
We carried out experiments to determine the speed of sedimentation of silt on synthetic linens made of polyamide fibers in an aerotank-bioreactor. We chose three different canvases made of capron, nylon and dewspo as inert loading for carrying out experimental studies. We showed the results of experiments on determination of sedimentation rate of silt and defined the most effective material to be used in synthetic loads. METHODS. Taking into account the complexity of measuring the rate of sedimentation of silt on inert carriers in industrial aeration tanks, kinetic dependencies on sedimentation were received on the physical model of aerotank-propellant. The model cell was a plane vertical crosssection of aeration tank. We performed assessment of floating silt concentration using the optical method of light transmission through the water-silt mixture. For regeneration of loading cloth we used air medium bubbling aeration. Time of regeneration of plane charge was approximately two minutes. RESULTS AND THEIR DISCUSSIONS. We received an equation describing the dependence of the concentration of free floating silt on the intensity of the light flux passing through the water-silt mixture. Polyamide fibers are characterized with the high strength and excellent resistance to wear. They are resistant to the action of many chemical reagents and biochemical effects. Polyamide fibers have a low hygroscopicity, as a result they become electrically charged. CONCLUSIONS. On the basis of the received data, it was concluded that nylon is more effective for use in synthetic loads. The amount of silt deposited on the nylon web is maximized from the investigated canvases, and the average sedimentation rate of 0.78 mg / (l min m²) allows to quickly recover immobilized silt after air regeneration |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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