Standard Methods for Examination of Water & Wastewater 15 pptx

... case of taste, there should be no noticeable odor at the point of use of any drinking water. The secondary standard for odor is 3. Fresh wastewater odor is less disagreeable than stale wastewater ... 2003 by A. P. Sincero and G. A. Sincero Constituents of Water and Wastewater 153 The other method of enumerating coliforms is through the use of the multiple- tube tech...

Ngày tải lên: 19/06/2014, 16:20

... Physical–Chemical Treatment of Water and Wastewater Solution: From Figure 3.4, for an H = 0.5 m, and θ = 90°, K = 0.58. Therefore, Example 3.5 To measure the rate of flow of raw water into a water treatment plant, ... rate of flow of fluids. In wastewater treatment, the choice of flow meters is especially critical because of the solids that are transported by the was...

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... pump At 20°C, P v (vapor pressure of water) = 2.34 kN/m 2 = 0.239 m of water Assume standard atmosphere of 1 atm = 10.34 m of water. Therefore, theoretical limit of pump cavitation = −(10.34 − ... (1986). Water and Wastewater Technology. John Wiley & Sons, New York. Kotov, A. I. (1998). Water treatment system is one of the most important elements of the ecolo...

Ngày tải lên: 19/06/2014, 16:20

... treatment of raw water for drinking purposes are two of the units in the physical treatment of water and wastewater that use the concept of flocculent settling. These units are either of circular or ... concentration of dissolved air in tap water at standard pressure corre- sponding to the temperature equal to the temperature of the wastewater. C as,t,sp can be obta...

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... length of the paddle blades of the longest compartment to that of the length of the paddle blades of the middle compartment is 2.6:2, and the ratio of the length of the paddle blades of the middle compartment ... equal to a force times a moment arm. The force at the bottom face F bot or the force at the upper face F up in the parcel represents this force. This force is a for...

Ngày tải lên: 19/06/2014, 16:20

... (1985). Water Quality. Addison-Wesley, Reading, MA. Vera, L., et al. (1998). Can microfiltration of treated wastewater produce suitable water for irrigation? Water Science and Technology Wastewater: ... The porosity of the unstratified bed is 0.39, and that of the stratified bed is 0.42. The temperature of the water to be filtered is 20°C. 7.11 For the sharp filter sand of...

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... breakthrough mass of adsorbate before exhaustion. The total volume of wastewater treated at exhaustion is designated by . Determination of the length of the active zone. The length of the active ... is introduced at the top of the bed. The packed density of the carbon bed is 721.58 kg/m 3 . 8 .15 A wastewater containing 25 mg/L of phenol and having the characteristic brea...

Ngày tải lên: 19/06/2014, 16:20

... experiment for the pur- pose of determining the value of β of a particular wastewater. The [C os,w ] of the wastewater after shaking the jar thoroughly is 7.5 mg/L. The temperature of the wastewater ... calculate [C os,w ]. 9 .15 An environmental engineer performs an experiment for the purpose of determining the value of β of a particular wastewater. If β is f...

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... to softening plant Mg1 Concentration of magnesium in influent from first stage of split- treatment softening plant Mg f Concentration of magnesium in treated water Mgr Concentration of raw water ... calculate the total mass of calcium carbonate solids precipitated from the removal of the magnesium bicarbonate of the carbonate hardness of magnesium. 10.27 For the raw wate...

Ngày tải lên: 19/06/2014, 16:20

... Physical–Chemical Treatment of Water and Wastewater Coucke, D., et al. (1997). Comparison of the different methods for determining the behaviour of water to calcium carbonate. Aqua (Oxford). 46, 2, 49–58. Edwards, ... Physical–Chemical Treatment of Water and Wastewater Therefore, Thus, the value of equilibrium constant is greater at 60°C than at 15 C. Ans The value o...

Ngày tải lên: 19/06/2014, 16:20