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Wastewater Treatment By Samuel Lam.

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Syllabus statements: Chapter Video Labs:

LIS Quiz 1 Review. What are the steps of Hypoxia? 1.Excess fertilizer is sprayed on hundreds of residential lawns. 2.Rain or runoff (CSO) brings nitrogen.

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THE PHOSPHORUS CYCLE. WHAT IS THE PHOSPHORUS CYCLE?  The phosphorus cycle, is the circulation of phosphorous among the rocks, soils, water, and plants.

Ch 27 Environmental Microbiology

Chapter 3.  The study of interactions between organisms and their environment.

Ch 23: Global Ecology. Ecology Terms Ecology - the study of the interactions of organisms with one another and with the physical environment Biosphere.

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Eutrophication. Process of Eutrophication  natural process of the aging of a body of water  As more nutrients enter the water more organisms live and.

Wastewater Treatment. Collection Sewers Collect wastewater and bring it to the wastewater treatment plant – Combined sewer overflows: Take untreated sewage.

What makes water dirty? How do we clean it. Can dirty water be cleaned? If you are like most people, you have not given ten seconds of thought to how.

Pollution of the Hydrosphere

Point pollution from sewage treatment plants

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© 2004 Wadsworth – Thomson Learning Chapter 28 Microorganisms and the Environment.

Types of Water Pollution Sewage Disease-causing agents Sediment pollution Inorganic plant and algal nutrients Organic compounds Inorganic chemicals Thermal.

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Presentation transcript:

Name: eee105 Password: prAIRie

Conflict exam: Thursday May 9 sign up with Karin Nelson Final Exam Tuesday May pm Foellinger Auditorium EEE pm

Final Exam EEE 105 Coverage: Cumulative with special emphasis on untested lectures

Final Exam EEE 105 Coverage: Cumulative with special emphasis on untested lectures and April 10 - May 1

Ecology of freshwaters Lakes, rivers, and streams Limnology

Limnology The Lake as a Microcosm -- Steven J. Forbes

Limnology Lake seiches wind air pressure

Limnology Lake seiches wind air pressure

Limnology Secondary seiches hypolimnion oscillates

Limnology Secondary seiches hypolimnion oscillates long after epilimnion is quiet

Limnology Secondary seiches hypolimnion oscillates long after epilimnion is quiet

Limnology The secret of Lake Monsters e.g. Champ of L. Champlain

Limnology The secret of Lake Monsters e.g. Champ of L. Champlain

Limnology The killer lakes of the Cameroons The night of Aug. 21, ,700 people died in their sleep CO 2

Limnology The killer lakes of the Cameroons The night of Aug. 21, ,700 people died in their sleep now degassing

photosynthesis detritus decomposition nutrient rich sediment Limnology What limits phytoplankton blooms? a nutrient is the limiting factor e.g. phosphorous in northwoods lakes phosphorous recycled in natural lake spring fall

photosynthesis detritus decomposition nutrient rich sediment Limnology What limits phytoplankton blooms? a nutrient is the limiting factor e.g. phosphorous in northwoods lakes if phosphorous is added to lake: bloom bacteria O 2 depleted cyanobacteria bloom

Limnology Cyanobacteria Once called blue-green algae anaerobic make nitrate from N 2

Limnology Cyanobacteria Ancient --3 billion years first multicellular organisms stromatolites

Limnology Eutrophication

Limnology Cyanobacteria Spirulina

Limnology Wastewater treatment Primary sewage treatment e.g. septic tanks Removes organic solids

Limnology Wastewater treatment Secondary sewage treatment Trickling filter Phosphorous & nitrates released in effluent

Limnology Wastewater treatment Secondary sewage treatment Activated sludge system

Limnology Wastewater treatment Tertiary sewage treatment Removal of nutrients such as phosphate & nitrate

Rivers Problems: Building on flood plains

Rivers Problems: Building on flood plains Pollution

Rivers Problems: Building on flood plains Pollution

Rivers Problems: Building on flood plains Pollution Hudson River

EPA has ordered massive dredging to remove PCB sediments

Rivers Problems: Building on flood plains Pollution Water Depletion