Water Treatment: Wastewater Part 1

Primary Treatment* Explain what wastewater is, where it comes from, and why it must be treated.* Define the following terms: sewer, sewage, and effluent.* Describe processes and equipment typically used in wastewater collection and primary treatment.* Explain water pH adjustment.* Describe the process of clarification and explain how an upflow clarifier works. Intermediate Treatment* Describe how clarification is used with chemical precipitation to remove some types of dissolved materials.* Describe the principles of operation for dissolved air flotation. Secondary Treatment* Define the following terms: organic material, anaerobic, aerobic, activated sludge, micro-organisms, return activated sludge, waste activated sludge, and mixed liquor.* Describe the activated sludge process.* Explain the basic requirements for microorganisms to work efficiently in the activated sludge process.* Define sludge handling.* Describe some typical methods of sludge handling.