Based on jar test results, 51 mg/L of alum is used to coagulate a sample containing...

Based on jar test results, 51 mg/L of alum is used to coagulate a sample containing 114 mg/L suspended soids. How many mg/L as CaCO3 of natural alkalinity are consumed? What is the mass rate of sludge generated if suspended solids are reduced to 10 mg/L? Assume Al(OH)3 is precipitated (EW=26.0 mg/meq). The plant treats 100,000 gpd.

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Ally Wells answered 1 year ago

COAGULATION – Treatment of a water supply required 60 mg/l of alum as a coagulant. The...

COAGULATION – Treatment of a water supply required 60 mg/l of alum as a coagulant. The natural alkalinity of the water is 20 mg/l. Based on theoretical chemical reactions, what dosage of lime as CaO is required to react with the alum after the natural alkalinity is exhausted?

Water in a closed jar that contains 0.05000 mg/ L of bicarbonate, as the ion, at...

Water in a closed jar that contains 0.05000 mg/ L of bicarbonate, as the ion, at a pH of 8.250. Find: a) Normality of all acid-base species (eq/L) 1 pt. b) Exact Alkalinity of the solution (Use four significant figures; mg/L as CaCO3) at 25°C. 1 pt. Hint: Bicarbonate is not the only carbonate species in the water. Use the equilib. relationship: HCO3- Û H+ + CO32- pKa2 = 10.33 at 25°C [Table 2-3 EE&S] c) Approximate Alkalinity of the...

Compute the carbonaceous and nitrogenous oxygen demand in mg/L for a wastewater containing a) 100 mg/L...

Compute the carbonaceous and nitrogenous oxygen demand in mg/L for a wastewater containing a) 100 mg/L C9N2H6O2 b) 100mg/L C6N2H4O c) 100mg/L C12N4H6O2 d) 100mg/L C10N2H8O2

Calculate the total theoretical oxygen demand (mg/L) of a solution containing 750 mg/L of C5H7O2N. Also,...

Calculate the total theoretical oxygen demand (mg/L) of a solution containing 750 mg/L of C5H7O2N. Also, calculate Carbonaceous ThOD and Nitrogenous ThOD separately

Determine the Theorethical Oxygen Demand(ThOD) for sewage containing 150 mg/L of CH2(NH2)COOH and 40 mg/L of...

Determine the Theorethical Oxygen Demand(ThOD) for sewage containing 150 mg/L of CH2(NH2)COOH and 40 mg/L of NH3. Find, (1) mg/L of oxygen for both carbon and nitrogen compounds (2) grams of oxygen per gram of CH2(NH2)COOH (oxygen used only for carbon oxidation) (3) grams of oxygen per gram of NH3 (oxygen used only for nitrification)

compute the total organic carbon in mg/L for a wastewater containing. a) 100mg/L C9N2H6O2 b) 100mg/L...

compute the total organic carbon in mg/L for a wastewater containing. a) 100mg/L C9N2H6O2 b) 100mg/L C6N2H4O c) 100mg/L C12N4H6O2 d) 100mg/L C10N2H8O2

Consider the following hypothesis test: Ho: μ ≤ 51 H1: μ > 51 A sample...

Consider the following hypothesis test: Ho: μ ≤ 51 H1: μ > 51 A sample of 60 is used and the population standard deviation is 8. Use α=0.05. Z critical = _______________ Sample mean = 53.5, z calc = ______________. Do you reject Ho? Sample mean = 51.8, z calc = ______________. Do you reject Ho? The Pvalue for c is:_________________

A water sample contains 150 mg/L ethylene glycol (C2H6O2) and 200 mg/L phenol (C6H6O). Calculate the...

A water sample contains 150 mg/L ethylene glycol (C2H6O2) and 200 mg/L phenol (C6H6O). Calculate the COD and TOC.

1. The results of a water analysis are as follows: Ca2+ = 70 mg/L Mg2+ =...

1. The results of a water analysis are as follows: Ca2+ = 70 mg/L Mg2+ = 9.7 mg/L Na+ = 6.9 mg/L K + = 0.1 mg/L Cl- = 10.6 mg/L SO4 2- = 96.0 mg/L HCO3 - = 140.3 mg/L 1) Is this an acceptable analysis? Why or why not? 2) Draw a millequivalent bar graph showing meq/L for a cation and anion balance. 3) What dose of lime and soda ash would be required to treat this water...

An unknown solution containing iron at a concentration between 10 and 50 mg/L is now to...

An unknown solution containing iron at a concentration between 10 and 50 mg/L is now to be analyzed. 5 mL of this unknown solution is diluted to 100 mL with the appropriate reagents to form the ferrous - phenanthroline complex. The diluted solution has an absorption of 0.614. A. What is the concentration in (mg/L) of ferrous ion in the diluted solution? B. What is the concentration of iron in the unknown solution (before it was diluted), in mg L-1...

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