Which wastewater treatment process is responsible for the removal of most of the BOD in sewage?

Expert Solution

gladiator answered 2 years ago

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...

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

A municipal wastewater treatment plant is designed for COD removal and nitrification. The wastewater characteristics and...

A municipal wastewater treatment plant is designed for COD removal and nitrification. The wastewater characteristics and kinetic coefficients are described in the table below. The aeration tank DO concentration is 2.0 mg/L and MLSS concentration is 2500 mg/L. The temperature is 15C. Assume that the concentration of influent NH4-N that is nitrified accounts for 80% of influent TKN. Calculate the following parameters as a function of SRT (i.e., derive mathematical expressions of the following parameters as a function of SRT,...

A wastewater treatment plant that treats wastewater to secondary treatment standards uses a primary sedimentation process...

A wastewater treatment plant that treats wastewater to secondary treatment standards uses a primary sedimentation process followed by an activated sludge process composed of aeration tanks and a secondary clarifiers. This problem focuses on the activated sludge process. The activated sludge process receives a flow of 15 million gallons per day (MGD). The primary sedimentation process effluent has a BOD5 concentration of 180 mgBOD5/L (this concentration is often referred as S). Before flowing into the activated sludge process, the primary...

Denitrification is commonly accomplished as a separate process after carbonaceous BOD removal. An alternative is to...

Denitrification is commonly accomplished as a separate process after carbonaceous BOD removal. An alternative is to recycle mixed liquor to an anaerobic stage at the head end of the aeration tank. What potential advantage does the alternative offer? Explain.

You have wastewater plant discharging into a clean river. The BOD of the Wastewater flow is...

You have wastewater plant discharging into a clean river. The BOD of the Wastewater flow is 300 mg/L, the wastewater flow is 15 m3/sec, the river flow upstream of the mixing point is 120 m3/sec and BOD upstream of river is 0. The DO of the river at the mixed point is 8 mg/L and the saturation DO in the river would be 10 mg/L, the deoxygenation rate coefficient is 0.30/day and the reaeration constant is 0.90/day. The river is...

(a) What is the chemical form of most nitrogen as it arrives at a wastewater treatment...

(a) What is the chemical form of most nitrogen as it arrives at a wastewater treatment plant? (b) What are the main chemical forms of nitrogen relevant to wastewater and its treatment? Show these in a simple nitrogen cycle.

A wastewater treatment plant with activated-sludge process treats wastewater for 120,000 m3/d. The effluent standard for...

A wastewater treatment plant with activated-sludge process treats wastewater for 120,000 m3/d. The effluent standard for both BOD and TSS is 20 mg/L. Influent TSS concentration is 450 mg/L and influent BOD concentration is 220 mg/L. MLSS concentration is 3500 mg/L (Assume no nitrification and temperature is 20°C). Determine: (20 pts) (a) Influent BOD and TSS concentration to the aeration tank if the treatment efficiencies in primary clarifier are 30% and 70% for BOD and TSS, respectively. (b) Determine sludge...

The ultimate BOD of a river just below a sewage outfall is 55.0 mg/L, and the...

The ultimate BOD of a river just below a sewage outfall is 55.0 mg/L, and the DO is at a saturation value of 12.0 mg/L. The deoxygenation rate coefficient kd is 0.30/day, and the reaction rate coefficient kr is 0.90/day. The river is flowing at the speed if 52.0 miles per day. The only source of BOD on this river is this single outfall. Find the critical distance downstream at which DO is a minimum. Find the minimum DO. If...

Why is grit removal important as a procedure in wastewater plants?If conventional grit removal systems are...

Why is grit removal important as a procedure in wastewater plants?If conventional grit removal systems are designed to remove particles larger than 0.210 mm and specific gravity of 2.65, why are particles this size and larger often found downstream? Explain. In chemical disinfection of drinking water,what is breakpoint chlorination? Explain.

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