see physical and chemical treatment of wastewaters

... rules and regulations under Section 3001 of the 1976 Resource Conservation and Recovery Act RCRA, must be conducted to determine the nature of the solid waste generated by the gasification of the ... dissolved and suspended fly ash and unconverted carbon trapped in the scrubber The treatment of this process wastewater for discharge will generate sludge which will have to be controlled and assessed ... volumetric flow rates of up to 120,000 standard cubic feet per hour and 400 psia and up to 1200°F Fluidized bed technology is ideal for reactors that continuously circulate reactive and regenerated...

Ngày tải lên: 10/08/2014, 20:20

... Taylor & Francis Group, LLC PHYSICAL AND CHEMICAL TREATMENT OF WASTEWATERS of PACT in municipal wastewater treatment resulted from the inability of the physical- chemical treatment process to adequately ... described by Slechta and Culp (1967), included pretreatment of secondary effluent by chemical clarification and filtration, thereby 982 PHYSICAL AND CHEMICAL TREATMENT OF WASTEWATERS providing ... research challenges and the new possibilities in 984 PHYSICAL AND CHEMICAL TREATMENT OF WASTEWATERS segregation by effluent type; evaluation of the pretreatment steps; and modeling of the individual...

Ngày tải lên: 10/08/2014, 20:20

... Physical & Chemical Characteristics of U.S DDGS Physical and chemical characteristics of distiller’s dried grains with solubles (DDGS) vary among sources and can influence its feeding value and ... 08 - Physical & Chemical Characteristics of DDGS Particle Size, Bulk Density and pH Particle size and particle size uniformity of feed ingredients are important considerations of livestock and ... size (geometric mean), the coefficient of variation (CV) and 08 - Physical & Chemical Characteristics of DDGS standard deviation (SD) of particle size within and among ethanol plants were calculated...

Ngày tải lên: 08/08/2012, 10:03

... different physical and chemical pretreatment processes in comparison with physical pretreatment alone The chemical pretreatments are acidic, alkaline, and water pretreatment Sulfuric acid and monoethanolamine ... water pretreatment After pretreatment, the effect of temperature and the effect of combination of xylanase, cellulase, and β-glucosidase were examined during saccharification 2.2.4 Physical and acid ... from standard sugar, butanol, and butyric acid solutions of known concentrations (10-100 µg/mL) Results and discussion 3.1 Saccharification with physical pretreatment alone (no chemical pretreatment)...

Ngày tải lên: 05/09/2013, 15:28

... various aspects of OFETs, including the synthesis of new materials, preparation and characterisation of organic thin films, characterisation of device properties and the development of new device ... fundamental understanding of the basic mechanism and properties of such OFETs, a national research initiative (supported by the DFG within the framework of the focus program 1121 OFET) was established ... Germany X.-D Dang Technichal University of Dresden Institute of Physical Chemistry and Electrochemistry 01062 Dresden Germany and Department of Chemistry University of California Santa Barbara, CA 93106...

Ngày tải lên: 16/02/2014, 19:20

... Journal of Physical Science, Vol 19(2), 69–75, 2008 2.1 71 Seed Characteristics and Composition Seed color was determined visually One hundred seeds of each type were picked randomly and weighed, ... spectrum of “Gurum” seed oil was obtained and compared to the spectrum of colocynth,9 sunflower and cotton seed oils.13 It was found that the IR spectrum of “Gurum” seed oil was similar to those of ... Physical and Chemical Characteristics of C lanatus 70 Oilseed producing countries are anxious to increase the value of their primary exports by expanding processing industries Establishment of...

Ngày tải lên: 07/08/2014, 14:20

... This book is titled Physical Chemical Treatment of Water and Wastewater This chapter begins by defining wastewater and physical chemical treatment of water and wastewater and treats briefly the ... meaning of the two words is blended such that they now often mean the same thing Wastewater equals sewage PHYSICAL CHEMICAL TREATMENT OF WATER AND WASTEWATER What is physical chemical treatment of ... also define chemical treatment of water and wastewater as a process applied to water and wastewater in which chemical changes occur Gleaning from these definitions of physical and chemical treatments,...

Ngày tải lên: 11/08/2014, 10:22

... Sincero and G A Sincero TX249_Frame_C02.fm Page 130 Friday, June 14, 2002 1:51 PM 130 Physical Chemical Treatment of Water and Wastewater 2.1.14 BIOCHEMICAL OXYGEN DEMAND Biochemical oxygen demand ... 1:51 PM 168 Physical Chemical Treatment of Water and Wastewater the parasites For municipal water systems, the most practical and effective way of getting rid of the parasite is the use of a properly ... formula of R C – OR′, where R′ is another hydrocarbon group.) Examples of fats are butter, lard, and margarine; and examples of oils are the vegetable oils cottonseed oil, linseed oil, and palm...

Ngày tải lên: 11/08/2014, 10:22

... 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 ... Projected area of paddle blade Sum of projected areas of paddle blades Length of paddle blade Coefficient of drag Width of paddle blade The diameter of the impeller Diameter of vessel Distance of impeller ... mix alum in a water treatment plant The height of the bottom of the sluice gate to the bottom of the channel is cm The rate of flow into the mixer is 0.048 m /s and the width of the channel is 10...

Ngày tải lên: 11/08/2014, 10:22

... Shriver and Co.); (b) an installation of a plate -and- frame press (courtesy of Xingyuan Filtration Products, China) © 2003 by A P Sincero and G A Sincero Physical Chemical Treatment of Water and Wastewater ... slow-sand filter of average porosity of 0.39 operated at 9.33 m /m ⋅ d and (b) a rapid-sand filter of average porosity of 0.42 operated at 120 m /m ⋅ d The head losses in the slow-sand and rapid-sand ... filter in m /m ⋅ d if the sand is to be used in (a) a slow-sand filter of average porosity of 0.39 and (b) a rapid-sand filter of average porosity of 0.42 The temperature of the water to be filtered...

Ngày tải lên: 11/08/2014, 10:22

... performance of a given membrane may be characterized according to its product flux and purity of product Flux, which is a rate of flow per unit area of membrane, is a function of membrane thickness, chemical ... concentrating solute at the surface of a solid by virtue of this attraction Adsorption may be physical or chemical Physical adsorption is also called van der Waals adsorption, and chemical adsorption is also ... rate of application of the influent be recorded, as the length of δ is dependent upon this flow rate The faster the rate of application, the longer the length of δ, and the slower the rate of application,...

Ngày tải lên: 11/08/2014, 10:22

... coefficient and the activity in mg/L of the bicarbonate ion © 2003 by A P Sincero and G A Sincero TX249_frame_C11.fm Page 516 Friday, June 14, 2002 2:27 PM 516 Physical Chemical Treatment of Water and ... 14, 2002 2:27 PM 534 Physical Chemical Treatment of Water and Wastewater a distribution main at a rate of 0.22 m /s Determine the length of time it takes to clog a section of the distribution ... constant as a function of temperature © 2003 by A P Sincero and G A Sincero TX249_frame_C11.fm Page 518 Friday, June 14, 2002 2:27 PM 518 Physical Chemical Treatment of Water and Wastewater o 11.1.3...

Ngày tải lên: 11/08/2014, 10:22

... Instrumentation, Control and Automation of Water and Wastewater Treatment and Transport Syst., July 6–9, Brighton, England, 37, 12, 111–119 Elsevier Science Ltd., Exeter, England Chuang, C J and K Y Li (1997) ... hydrolysis of the − water molecule and exchanging of the resulting OH ion with the H2O ligand inside the coordination sphere This type of reaction is called ligand exchange reaction Some of the hydrolysis ... discussions, mention of these optimum pH values would mean values at the conditions of 25°C of temperature and a solids concentration of 140 mg/L 12.9 CHEMICAL REQUIREMENTS The chemical reactions...

Ngày tải lên: 11/08/2014, 10:22

... A photograph of “bioferro” and “bioman” bacteria 13.1 NATURAL OCCURRENCES OF IRON AND MANGANESE Iron and manganese have the electronic configurations of [Ar]3d 4s and [Ar]3d 4s , and are located ... (tank) for containing the addition of the hydroxide source (lime) to raise the pH and for mixing the chemicals and allowing completion of the precipitation of Fe(OH)2 and Mn(OH)2 The precipitates formed ... constant of FeOH and FeOH + Equilibrium constant of Fe ( OH ) − Equilibrium constant of Fe ( OH ) − Equilibrium constant of Fe ( OH ) 4+ Equilibrium constant of Fe2 ( OH ) + Equilibrium constant of...

Ngày tải lên: 11/08/2014, 10:22

... encountered in the normal treatment of water and wastewater This concentration is representative of the dissolved solids concentration of sea water 14.5 CHEMICAL REACTION OF THE PHOSPHATE ION WITH ... liter of suspended solids in raw water Cubic meters of water treated Water of hydration of alum Activity coefficient of the calcium ion Activity coefficient of the hydrogen ion Activity coefficient of ... DETERMINATION OF THE OPTIMUM pH AND THE OPTIMUM pH RANGE As in the case of Eqs (14.12) and (14.14), Equation (14.18) cannot guarantee an optimum if it is differentiated and equated to Hence, the optimum and...

Ngày tải lên: 11/08/2014, 10:22

... OF CELL YIELDS Three types of cell yields are used in the previous derivations: Yc, Ydn, and Ydc The units of Yc and Ydc are in terms of moles of organisms per unit mole of sewage The units of ... mg/L of TKN, 25 mg/L of ammonia nitrogen, and 200 mg/L of BOD5 The effluent from the tank contains 2.0 mg/L of dissolved oxygen, 0.5 mg/L of NO2−N, 2.0 mg/L of ammonia nitrogen, and 10 mg/L of BOD5 ... unit mass of BOD5 or mass of organisms or cells per unit mass of COD For the case of Ydn, the units used in practice are in terms of mass of the organisms or cells per unit of mass of the nitrate...

Ngày tải lên: 11/08/2014, 10:22

... 16.1 Unit operations of ion exchange of ions takes place This exchange of ions is the chemical reaction of the unit process of ion exchange; the mere physical passing through of the water with the ... DESIGN OF ION EXCHANGERS Generally, designs of ion exchangers should include the following: quantity of exchange materials and regenerants; dimension of the bed (volume of bed); interval of bed ... having intervals of hours The raw 2+ 2+ water contains 80 mg/L of Ca and 15 mg/L of Mg The exchanger is a resin of exchange capacity of 1412.8 geq/m Assume that the packed density of the resin...

Ngày tải lên: 11/08/2014, 10:22

... disinfectant and the microorganism and the intensity of the disinfectant, age of the microorganism, nature of the suspending liquid, and temperature Each of these factors are discussed next 17.2.1 TIME OF ... concern of water treatment plant operators Figure 17.2 shows the threshold odor as a function of pH and the concentration of chlorine dosage Figure 17.2a uses a concentration of 0.2 mg/L and, at ... the unit of disinfecting power of NaOCl is NaOCl/2 = 37.24 Therefore, the available chlorine of NaOCl is the ratio of the mass of chlorine to the mass of NaOCl that has the same unit of oxidizing...

Ngày tải lên: 11/08/2014, 10:22

... sequence (B) SDS ⁄ PAGE of CD68CQ65 (lanes and 3), CD69NG70 (lanes and 5), CD69NV82 (lanes and 7) CD69NS84 (lanes and 9), rat CD69 (lanes 10 and 11) and mouse CD69 (lanes 12 and 13) was performed ... the stability of the short proteins CD69NV82 and CD69NS84 is much lower using these criteria, both from the point of view of their physical stability upon heating and their biochemical stability ... resonance frequencies of the backbone amides were assigned as described in the Experimental procedures Chemical shifts of alpha and beta carbons and of backbone amide protons and nitrogens were...

Ngày tải lên: 16/03/2014, 04:20