What are the latest technologies to remove sulfate from industrial wastewater?

What are the latest technologies to remove sulfate from industrial wastewater?

Expert Solution

Although there are many processes to remove the sulfate from industrial waster water. Following are the maximumly used and the latest ones:

1. Lime precipitation: In this technology lime(Badically calcium) is added in the form of either hydrated lime or limestones. Lime precipitates the sulfates in form of calcium sulfate based on the solubility limits of sulfate salt. After achieving the soubility limit, further lime addition does not actually help.

2. Barium Precipitation: Barium sulfate has very low solubility in water. Thus barium is an excellenet method of removing sulfate from waster water. Barium is added in the form of Barium chloride or Barium carbonate which the reacts with sulfates to form barium sulfates.

3. Cost Effective Sulfate Removal process: A specializeed powdered cement also called as reagent is added to waste water. This forms a precipateted hydrated calcium aluminium sulfate compound also called as ettringite, In The CESR process lime is added and a pH of required at 11.3 for ettringite formation .

Amanda K answered 2 years ago

In treating an industrial wastewater, we add NaOH to remove Cr3+ ions (atomic weight) = 52)....

In treating an industrial wastewater, we add NaOH to remove Cr3+ ions (atomic weight) = 52). The chemical equation for the dissolution of Cr(OH)3 is Cr(OH)3 (s) ↔ Cr3+ + 3OH- (Ksp = 6.7*10-31) What is the final equilibrium concentration (in mg/L) of Cr3+ ions in a solution of Cr(OH)3 when the water has a pH of 5?

The wastewater treatment plant will also treat wastewater originating from the industrial activity of textile mills...

The wastewater treatment plant will also treat wastewater originating from the industrial activity of textile mills in the future. proposed and describe appropriate unit processes that can be added to the plant.

2. An industrial wastewater is discharged into a municipal wastewater sewer. The characteristics of the two...

2. An industrial wastewater is discharged into a municipal wastewater sewer. The characteristics of the two wastes are given below. Determine the characteristics of the mixture. Parameter Industrial Municipal Flow, m3/day 3000 18000 BOD5, mg/L 1500 250 PO43-, mg/L 150 2.3

One method of removing phosphate from wastewater effluent is to precipitate itwith aluminium sulfate (alum). A...

One method of removing phosphate from wastewater effluent is to precipitate itwith aluminium sulfate (alum). A possible stoichiometry (but not exact because aluminium andphosphate can form many different chemical materials) is: 2 PO43- + Al2(SO4)3  2 AlPO4 + 3 SO42- If the concentration of phosphate (PO43-) is 30 mg/L, how many kg of alum must be purchased annually to treat 40L/s of wastewater? How many kg/yr of solid precipitate will be formed (drybasis) if all of the phosphate is...

A factory disposes 1.1 m3/s of treated industrial wastewater into a river. The wastewater has an...

A factory disposes 1.1 m3/s of treated industrial wastewater into a river. The wastewater has an ultimate biochemical oxygen demand of 25 mg/L and dissolved oxygen of 2 mg/L. Just upstream of the wastewater outfall, the river has a flow rate of 10 m3/s, ultimate biochemical oxygen demand of 6 mg/L, and oxygen deficit of 2 mg/L. At the river temperature, the saturation concentration of dissolved oxygen is 9 mg/L. The deoxygenation coefficient is 0.19 d-1 and reaeration coefficient is...

Disruptive Technologies Diruptive technologies. The latest discussion between entreprenurial gurus are the so called disruptive technologies...

Disruptive Technologies Diruptive technologies. The latest discussion between entreprenurial gurus are the so called disruptive technologies within entrerpeneurs. investigate this topic and discuss the below 1. what do we mean by disruptive technologies. 2. examples of disruptive technolgies, 3. latest technologies, that can be called "disruptive". 4. Benefits of disrubtive technolgies.

What are the common forms of sulfate ions present in natural and industrial environment? Write the...

What are the common forms of sulfate ions present in natural and industrial environment? Write the chemical reactions involved in each case during the sulfate attack.

What is wastewater treatment? what is the process of wastewater treatment? why is wastewater treatment important?...

What is wastewater treatment? what is the process of wastewater treatment? why is wastewater treatment important? No Plagiarism. Please Print essay format question

Describe what happens to the wastewater from our homes,and give information about the wastewater treatment plants...

Describe what happens to the wastewater from our homes,and give information about the wastewater treatment plants ( preferred if you mentioned Abu Dhabi - UAE ). What they are, what area they serve, what is the capacity, what level of treatment they provide, what do they do with the cleaned output, etc. the study should conclude with a tangible plan for wastewater management from a specific location such as school, a town, a farm, a mall and so on.

The most common processes used in the treatment of domestic and industrial wastewater are carbon removal,...

The most common processes used in the treatment of domestic and industrial wastewater are carbon removal, nitrification, denitrification and methanogenesis processes. 1- Describe in detail how wastewater is treated in these processes. Classify the microorganisms involved in these processes by metabolic groups, carbon source, energy source, electron donor source and electron acceptors. 2- Provide information on the characteristics of the wastewater originating from these industries by giving at least three examples to the industrial wastewater sources where each process is...

Question