This is a picture of a treatment plant. You can see the aeration tanks and all the primary and secondary treatment stages.
Friday, May 1, 2009
Wastewater Treatment Plant
This is a picture of a treatment plant. You can see the aeration tanks and all the primary and secondary treatment stages.
Thursday, April 30, 2009
What is Biochemical Oxygen Demand ???
Biochemical Oxygen Demand (BOD) : BOD is an important measure of water quality. It is a measure of the amount of oxygen needed by microorganisms to oxidize the organic matter in water over a period of 5 days. The BOD of drinking water should be less than 1. Raw sewage will produce a BOD value of several hundered parts per million.
Primary Treatment of Water :
The simplest method of treatment is to allow the solids in raw sewage to settle out. THis forms a sludge. Primary treatment removes only a small portion of BOD and virtually none of the dissolved minerals and chemicals.
Secondary Treatment :
Many treatment plants then pass the wastewater from primary treatment to secondary treatment. Here the wastewater is brought in contact with oxygen and microorganisms. They break down much of the organic matter.
Primary and secondary treatment together can remove up to 90% of the BOD. Chlorination is then used to remove the content of bacteria, then the sample from secondary treatment is returned to the local surface water.
Advanced Waste Treatment:
The combination of primary and secondary treatment removes most of the organic matter in sewage and lowers the BOD. But even after that, most of the nitrogen and phosphorus in sewage remains in the wastewater from secondary treatment. These inorganic nutrients can cause algae. A third stage of treatment called tertiary or advanced waste treatment is used to dissolve slats and these chemicals from the sample.
Primary Treatment of Water :
The simplest method of treatment is to allow the solids in raw sewage to settle out. THis forms a sludge. Primary treatment removes only a small portion of BOD and virtually none of the dissolved minerals and chemicals.
Secondary Treatment :
Many treatment plants then pass the wastewater from primary treatment to secondary treatment. Here the wastewater is brought in contact with oxygen and microorganisms. They break down much of the organic matter.
Primary and secondary treatment together can remove up to 90% of the BOD. Chlorination is then used to remove the content of bacteria, then the sample from secondary treatment is returned to the local surface water.
Advanced Waste Treatment:
The combination of primary and secondary treatment removes most of the organic matter in sewage and lowers the BOD. But even after that, most of the nitrogen and phosphorus in sewage remains in the wastewater from secondary treatment. These inorganic nutrients can cause algae. A third stage of treatment called tertiary or advanced waste treatment is used to dissolve slats and these chemicals from the sample.
Water for Power, HydroPower Plant
Hydropower plants are sustainable forms of energy that produce electricity from flowing water. The amount of energy is determined by the head and flow of the water. The head of the water is the change in elevation of the water and flow is the volume of the water. The moving water is used to turn a turbine or waterwheel which spins a shaft to power an alternator or generator to produce electricity. This is why hyrdoplants are a great resource for power and a great alternative to fossil fuel burning, as long as theres water available to produce power. This diagram an short explaination shows how the whole sytem works.
Waterless Toilet
This product is a waterless toilet that turns human waste into compost. Composting toilets use nature's decomposition process to reduce waste and convert it into nutrient rich compost. They use oxygen loving bacteria that is naturally present in human waste to do all the work. These toilets are not an "indoor outhouses". They are used like a normal toilet, toilet paper and all. You just toss in compost mix after each fecal use instead of flushing. The air flow inside the toilet pulls all odors up the 'chimney' and out of your home.
Here are some pictures of a toilet made my Biolet :
Wastewater & Contaminated DIVING
I thought this was a cool site. It diplicts how some of the maintance and inspection of wastewater treatment plants is done. Most of these inspections and maintances are done in very toxic waste liquids. The company is called Seaview Diving Contractors, check it out.
WasteWater Lagoon at Paper MillSince :
This wastewater lagoon was having difficulty maintaining proper bod's. Seaview devised a method to clean out plugged nozzles for the paper mill which restored proper operating levels.
Seaview's experience saves industry millions of dollars each year, by providing solutions that would otherwise shut the industry or paper mill down for repair. Seaview has been able to complete maintenance and repairs while the mills continue to operate, saving otherwise lost production days and man hours.EPA Recovery Act Funds For Wastewater Infastructure Projects in Iowa & U.S.
EPA Announces $53M Recovery Act Funds For Wastewater Infrastructure Projects In Iowa
April 22, 2009
In a move that stands to create jobs, boost local economies, improve aging water infrastructure and protect human health and the environment for the people in the State of Iowa, the U.S. Environmental Protection Agency (EPA) has awarded $53,040,000 to the Iowa Department of Natural Resources. This money will be provided by the American Recovery and Reinvestment Act of 2009. This gives states money towards fixing out-of-date water systems around the country.
"This funding will go a long way toward fixing aging infrastructure in urban and rural communities in Iowa," said William Rice, Acting Regional Administrator. "Clean water is essential for both healthy communities and healthy local economies. These funds will help fix aging infrastructure and provide good-paying jobs."
The Recovery Act funds will go to the state's Clean Water State Revolving Fund program. The Clean Water State Revolving Fund program provides low interest loans for water quality protection projects for wastewater treatment, pollution control, and watershed management. An unprecedented $4B dollars will be awarded to fund wastewater infrastructure projects across the country under the Recovery Act.
Since the Clean Water State Revolving Fund program began in 1987, EPA has awarded more than $26B in grants, which states have turned into $69B of financial assistance for water quality projects. The revolving nature of the program ensures water quality projects will be funded for generations to come.
President Obama signed the American Recovery and Reinvestment Act of 2009 (ARRA) on February 17, 2009 and has directed that the Recovery Act be implemented with unprecedented transparency and accountability.
For more information, visit http://www.recovery.gov.
( U.S. EPA)
April 22, 2009
In a move that stands to create jobs, boost local economies, improve aging water infrastructure and protect human health and the environment for the people in the State of Iowa, the U.S. Environmental Protection Agency (EPA) has awarded $53,040,000 to the Iowa Department of Natural Resources. This money will be provided by the American Recovery and Reinvestment Act of 2009. This gives states money towards fixing out-of-date water systems around the country.
"This funding will go a long way toward fixing aging infrastructure in urban and rural communities in Iowa," said William Rice, Acting Regional Administrator. "Clean water is essential for both healthy communities and healthy local economies. These funds will help fix aging infrastructure and provide good-paying jobs."
The Recovery Act funds will go to the state's Clean Water State Revolving Fund program. The Clean Water State Revolving Fund program provides low interest loans for water quality protection projects for wastewater treatment, pollution control, and watershed management. An unprecedented $4B dollars will be awarded to fund wastewater infrastructure projects across the country under the Recovery Act.
Since the Clean Water State Revolving Fund program began in 1987, EPA has awarded more than $26B in grants, which states have turned into $69B of financial assistance for water quality projects. The revolving nature of the program ensures water quality projects will be funded for generations to come.
President Obama signed the American Recovery and Reinvestment Act of 2009 (ARRA) on February 17, 2009 and has directed that the Recovery Act be implemented with unprecedented transparency and accountability.
For more information, visit http://www.recovery.gov.
( U.S. EPA)
Rainwater Catchment
An inexpensive and fairly common system that is being used to manage storm water runoff are rain catchments.
Heres a picture of rainwater harvesting used in a residential home :
Its simple and affordable to collect and use the abundant supply of naturally pure and soft rainwater that falls on your roof every time it rains. From 50 gallon rain barrels to 50,000 gallon tanks, rain barrels can provide the technology needed to assemble a nearly maintenance-free rainwater harvesting system suitable for most household uses.
SIMPLE & RESOURCEFUL
Heres a picture of rainwater harvesting used in a residential home :
Its simple and affordable to collect and use the abundant supply of naturally pure and soft rainwater that falls on your roof every time it rains. From 50 gallon rain barrels to 50,000 gallon tanks, rain barrels can provide the technology needed to assemble a nearly maintenance-free rainwater harvesting system suitable for most household uses.
SIMPLE & RESOURCEFUL
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