5. The design flow (average daily flow) for a new trickling filter plant for the tri-cities is 52,000 m/d. Raw wastewater characteristics are: 240 mg/L BOD, 240mg/L TSS. Primary settling tank (PST) removes 33% BOD, 70% TSS. The final effluent should have less than 20 mg/L BOD and less than 20 mg/L TSS. Filter depth is 3.2 meters. Determine the diameter of single stage trickling filter(s) using the NRC equation if they are using 3 trickling filters and a recirculation ratio of 3. If we use the BOD loading criteria of 0.6 kg/d-m' and hydraulıc loading rate of 16 m/d-m2 to design the trickling filter will the volume calculated using the NRC equation above be sufficient?

5. The design flow (average daily flow) for a new trickling filter plant for the tri-cities is 52,000 m/d. Raw wastewater characteristics are: 240 mg/L BOD, 240mg/L TSS. Primary settling tank (PST) removes 33% BOD, 70% TSS. The final effluent should have less than 20 mg/L BOD and less than 20 mg/L TSS. Filter depth is 3.2 meters. Determine the diameter of single stage trickling filter(s) using the NRC equation if they are using 3 trickling filters and a recirculation ratio of 3. If we use the BOD loading criteria of 0.6 kg/d-m' and hydraulıc loading rate of 16 m/d-m2 to design the trickling filter will the volume calculated using the NRC equation above be sufficient?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

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**Trickling Filter Plant Design**

The design flow (average daily flow) for a new trickling filter plant for the tri-cities is 52,000 m³/d. Raw wastewater characteristics are as follows:

- **Biochemical Oxygen Demand (BOD):** 240 mg/L
- **Total Suspended Solids (TSS):** 240 mg/L

The primary settling tank (PST) removes 33% of BOD and 70% of TSS. The final effluent should have less than 20 mg/L of BOD and less than 20 mg/L of TSS. The filter depth is 3.2 meters.

**Task:**

Determine the diameter of single-stage trickling filter(s) using the NRC equation, given the plant will utilize 3 trickling filters and a recirculation ratio of 3.

Additionally, if the BOD loading criteria of 0.6 kg/d-m³ and a hydraulic loading rate of 16 m³/d-m² are used to design the trickling filter, evaluate whether the volume calculated using the NRC equation is sufficient.

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Note: Since no graphs or diagrams are included, none are described here. If further explanation or assistance with calculations is needed, please provide the NRC equation or additional details.

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