A primary wastewater unit produces 9,000 lbs of dry solids. The sludge contains 7.5% dry solids...
A primary wastewater unit produces 9,000 lbs of dry solids. The sludge contains 7.5% dry solids that are 65% volatile. Calculate the specific gravity of the solid matter and wet sludge. Calculate the volume of the wet sludge in gallons. If this residue is thickened to a cake of 27% solids, what is the specific gravity and volume in gallons of the moist cake? Indicate the volume of the moist cake
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A primary wastewater unit produces 9,000 lbs of dry solids. The
sludge contains 7.5% dry solids...
5, (15 points) Primary sludge contains 5% dry solids that are 70%volatile and 30% fixed. Determine The specific gravity of dry solids a) b) The specific gravity of sludge The volume of thickened s...
5, (15 points) Primary sludge contains 5% dry solids that are 70%volatile and 30% fixed. Determine The specific gravity of dry solids a) b) The specific gravity of sludge The volume of thickened sludge, if 1,000 kg of dry solids are thickened to 6% in a gravity thickener. 1.0 Specific gravity of volatile solids Specific gravity of fixed solids -2.5 Total mass of dry solids 100 kg Total mass of sludge 100 kg Density of water 1,000 kg/m3 Assume:
5,...
Given 500 kg (dry basis) of primary sludge with the following characteristics Primary Digested Solids %...
Given 500 kg (dry basis) of primary sludge with the following characteristics Primary Digested Solids % Volatile matter, %) Specific gravity of fixed solids Specific gravity of volatile solids .0 10 60 60 (destroyed) 2.5 2.5 1.0 Find the following: a) Liquid sludge volume before digestion b) Fraction of volatile solids after digestion c) Specific gravity of the digested sludge d) Percent volume reduction after digestion
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of...
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of raw wastewater to be treated is 20 MGD in the design year, the dissolved BODs is 380 mg/L, and SS is 360 mg/L. The wastewater generated by the sludge treatment process is about 4 MGD with the dissolved BODs being 1800 mg/L, and SS being 1200 mg/L, and will be returned to the wet well in the pumping station at the beginning of the...
Secondary Treatment Based on a plant flow rate of 40 mgd, design an activated sludge, secondary t...
Secondary Treatment Based on a plant flow rate of 40 mgd, design an activated sludge, secondary treatment system with recycle which maintains a MLVSS = 2,000 mg/L in the aeration reactor and has an average Solids Retention Time (SRT)-4 days. The biota kinetic constants are Kinetic Coefficients for the Activated-sludge Process for the Removal of Organic Matter from Domestic Wastewater Endogenous Decay Coefficient- k(d) 0.1 Half-velocity constant- K(s VSS/qVss-da 15 Mg/L bsCOD Max. Specific Substrate Utilization Rate-k 6 G bsCOD/gVSS-da...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...
Separating a Mixture, Recrystallization, pre-lab assignment could you also explain why you chose that substance for...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
5, (15 points) Primary sludge contains 5% dry solids that are 70%volatile and 30% fixed. Determine The specific gravity of dry solids a) b) The specific gravity of sludge The volume of thickened sludge, if 1,000 kg of dry solids are thickened to 6% in a gravity thickener. 1.0 Specific gravity of volatile solids Specific gravity of fixed solids -2.5 Total mass of dry solids 100 kg Total mass of sludge 100 kg Density of water 1,000 kg/m3 Assume:
5,...
Given 500 kg (dry basis) of primary sludge with the following characteristics Primary Digested Solids % Volatile matter, %) Specific gravity of fixed solids Specific gravity of volatile solids .0 10 60 60 (destroyed) 2.5 2.5 1.0 Find the following: a) Liquid sludge volume before digestion b) Fraction of volatile solids after digestion c) Specific gravity of the digested sludge d) Percent volume reduction after digestion
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of raw wastewater to be treated is 20 MGD in the design year, the dissolved BODs is 380 mg/L, and SS is 360 mg/L. The wastewater generated by the sludge treatment process is about 4 MGD with the dissolved BODs being 1800 mg/L, and SS being 1200 mg/L, and will be returned to the wet well in the pumping station at the beginning of the...
Secondary Treatment Based on a plant flow rate of 40 mgd, design an activated sludge, secondary treatment system with recycle which maintains a MLVSS = 2,000 mg/L in the aeration reactor and has an average Solids Retention Time (SRT)-4 days. The biota kinetic constants are Kinetic Coefficients for the Activated-sludge Process for the Removal of Organic Matter from Domestic Wastewater Endogenous Decay Coefficient- k(d) 0.1 Half-velocity constant- K(s VSS/qVss-da 15 Mg/L bsCOD Max. Specific Substrate Utilization Rate-k 6 G bsCOD/gVSS-da...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
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