Term
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Definition
| Carries storm water and watsewater |
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Term
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Definition
| A sewer system that has seperate pipes for waste and stormwater |
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Term
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Definition
| Sludge contacts with raw raw sewage, and bacteria in the sludge. Then is decomposes the raw sewage, lowering ODW and BOD |
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Term
| Discuss the steps and processes involved in water purifaction |
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Definition
intake
flocculation
sedimentation
filtration
disinfection
storage and distribution |
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Term
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Definition
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Term
| What is the role of Hydrated Lime |
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Definition
| raises the ph to prevent eroison in pipes |
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Term
| What is the role Chlorination |
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Definition
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Term
| Wat is the role of Activated Charcoal |
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Definition
| gets rid of fowl odors and dicoloration |
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Term
| Discuss how a septic tank works |
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Definition
| wastewater flows into the septic tank where sediments of waste occurs, affluent water flows into the leach field where the remaing waste is broken down |
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Term
| What are the two main processes in conventional sewage treatment? |
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Definition
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Term
| What is the primary function of conventional sewage treatment? |
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Definition
| To speed up the natural process of water purifying itself. |
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Term
| What is the difference between primary and secondary sewage treatment? |
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Definition
| Primary is mechanical, secondary treatment is biological |
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Term
| Discuss the steps/processes involved in primary and secondary sewage treatment. |
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Definition
| Primary: screening, grinding, grit chamber, sedimentation tank, chlorination of effluent. Secondary: Trickling filter, activated sludge. |
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Term
| Discuss how a trickling filter works. |
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Definition
| Bed of stones 3-10” deep through which sewage passes, Bacteria gather on stones and multiply, consuming ODW, Cleaner water trickles through pipes at bottom of filter for additional treatment |
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Term
| Discuss how the activated sludge process works. |
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Definition
| Effluent leaves sedimentation tank and is pumped to an aeration tank, effluent is mixed with air and sludge loaded with bacteria, sludge contacts with raw sewage, and bacteria in the sludge then decomposes the raw sewage lowering ODW and BOD. |
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Term
| What are some different types of tertiary sewage treatment? |
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Definition
| Bleaching to remove coloration, disinfection to kill pathogens, coagulation-sedimentation with alum, absorption using activated charcoal, electrodialysis for salt removal |
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Term
| What are some methods of sludge disposal? |
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Definition
| Landfills, incineration, land application, anaerobic digestion |
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Term
| Discuss how the activated sludge process works. |
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Definition
| Effluent leaves sedimentation tank and is pumped to an aeration tank, effluent is mixed with air and sludge loaded with bacteria, sludge contacts with raw sewage, and bacteria in the sludge then decomposes the raw sewage lowering ODW and BOD. |
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Term
| What are some different types of tertiary sewage treatment? |
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Definition
| Bleaching to remove coloration, disinfection to kill pathogens, coagulation-sedimentation with alum, absorption using activated charcoal, electrodialysis for salt removal |
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Term
| What are some methods of sludge disposal? |
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Definition
| Landfills, incineration, land application, anaerobic digestion |
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