bbk 000000
UDC 628.34:677.3
Pougachev E. A., Ryabaya А. К.
Processes and equipment for introducing zero-discharge water technology at the wool preparation plants
Summary
Methods of wool preparation wastewater treatment are considered. Specific features of recycling wastewater disposal, of wool preparation water use technology with valuable material utilization are presented. Balance calculations of water and solid flows are given.
Key words
wastewater treatment , water disposal , wool preparation , evaporation , wool grease
|
bbk 000000
UDC 628.23
Deryusheva N. L., Deryushev L. G., Sapoukhin А. А., Fam H. H.
On ventilation and hydraulic locks in plumbing systems
Summary
The results of analytical studies of the flow in a wastewater leader are presented. Basing on the laws of hydraulics, thermodynamics and aerodynamics a mathematical model of the hydraulic lock failure in the sanitary ware siphon is drawn up. The causes of the failure are substantiated together with the need of the analytical conclusions verification by experimental methods.
Key words
plumbing , ventilation of wastewater leaders , hydraulic lock failure
|
bbk 000000
UDC 532.526.4
Vikoulin P. D., Frolova A. О.
Methods of determining flow velocity in open channels at turbulent regime
Summary
The turbulent flow structure and velocity distribution at turbulent liquid flow is considered. The methods of determining flow velocity in open channels based on keeping records of the speed of helix blade rotation, of the floating object speed, of the dynamic pressure, of the flow force impact; on the heat exchange principle; on measuring water amount entering the meter for the observation period; on the use of ultrasound; on the use of laser are presented. The error of measuring velocity by different methods is indicated. The profile of liquid velocity in a complete-mix activated sludge model system is specified.
Key words
turbulent flow , hydrodynamics , Reynolds number , actual velocity , Bernoulli equation , Pitot tube , ultrasonic flowmeter , laser method , complete-mix activated sludge system
|
|
