Flow rate of water

Adsorption usually increases as pH and temperature decrease. Chemical reactions and forms of chemicals are closely related to pH and temperature. When pH and temperature are lowered many organic chemicals are in a more adsorbable form. The adsorption process is also influenced by the length of time that the AC is in contact with the contaminant in the water. Increasing contact time allows greater amounts of contaminant to be removed from the water. Contact is improved by increasing the amount of AC in the filter and reducing the flow rate of water through the filter. 

The capacity of the resin to remove hardness is dependent on several design factors, including the flow rate of water through the resin and the amount of regenerant used (salting rate). 

A volume measure of the permitted flow rate of water through ion exchange resins and sometimes other media, such as sand. Typically, ion-exchange resins used for water softening will tolerate 8 to 40 BV/hr. 

This application is designed to model the influence of the hydropathic state of the wall on the flow rate of water through a tube or other vessel. The system... 

Figure 6.2. Flow rate of water next to a wall, when the hydropathic state of the wall varies...

You want to use a venturi meter to measure the flow rate of water, up to 1000 gpm, through an 8 in. sch 40 pipeline. To measure the pressure drop in the venturi, you have a DP cell with a maximum range of 15in.H20 pressure difference. What size venturi (i.e., throat diameter) should you specify ... 

A packed bed is composed of crushed rock with a density of 175 lbm/ft3 of such a size and shape that the average ratio of surface area to volume for the particles is 50 in.2/in.3. The bed is 6 ft deep, has a porosity of 0.3, and is covered by a 2 ft deep layer of water that drains by gravity through the bed. Calculate the flow rate of water through the bed in gpm/ft2, assuming it exits at 1 atm pressure. 

Pearson, F. J., Jr., White, D. E., Carbon-14 ages and flow rates of water in Carrizo Sand, Atascosa County, Texas, Water Resources Research. 3(1), 251-261 (1967). 

Other notation Q = Volumetric flow rate of water entering basin P = Volumetric treatment rate in processing plant... 

Volumetric flow rate of water into water column... 

Calculate the volumetric flow rate of water through a pipe with an inside diameter of 0.15 m fitted with an orifice plate containing a concentric hole of diameter 0.10 m given the following data. 

A limited number of empirical correlations have been developed for metal droplet sizes generated by water atomization, as listed in Table 4.18. In these correlations p is a system-specific constant, is the atomizing angle, i.e., angle between water nozzle axis and metal delivery nozzle axis, A is a proportional constant specific to atomizer type, melt type and melt temperature, n is a parameter depending on atomizer type, APw is the water pressure, Uw is the water velocity, and mw is the mass flow rate of water. 

If the control valve is pinched back to 50 percent open, what wilt be the flow rate of water and the pump discharge pressure ... 

Nguyen et al. [205] used a technique in which a constant mass flow rate of water-saturated air was forced through a water-saturated sample. It was explained that the shear force of the gas flow dragged water out of the sample. In addition, the saturated air was needed in order to prevent water loss from the sample by evaporation. Once a steady state was achieved, the pressure difference between the inlet and outlet of the apparatus was recorded. After the tests were completed, the sample was weighed to obtain its water content. Thus, the relative permeability was calculated from the pressure drop, the water content in the sample, and the mass flow rate [205]. 

The cost of ChemOx treatment depends on the specific application. Factors that influence cost include specific contaminants to be removed, concentration of contaminants in the effluent, amount or flow rate of water to be treated, discharge requirements, and geographical location. The vendor states that they will provide cost estimates for specific applications (D17705T, p. 4). 

In the case where the exit temperature of cooling water is 25 °C, the flow rate of water is... 

The flow rate of water through the porous medium per unit total (bulk) area perpendicular to the direction of flow, the so-called specific discharge q, is related to the effective mean flow velocity in the pores along the x-axis, u, by... 

Global flow rates of water total flux flux per area6 ... 

Advection and Diffusion of Hg from Sediments. In lakes such as Pallette Lake, which receive continuous groundwater inflow and outflow, advection and diffusion of chemical constituents can be important for littoral sediments. To assess the importance of advective and diffusive Hg fluxes, information on background groundwater concentrations, levels of Hg at the sediment-water interface, and flow rates of water must be determined. 

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