# data[].attributes.body
Wastewater passes through metal bars that stops the larger pieces of solid waste that can be removed from the water.

# data[].attributes.body
In our lab, we used a net fastened around the beaker to collect the stones and tea leaves which stood for the solid waste that is found in wastewater.

# data[].attributes.body
Grit is removed from the water by swirling the water in a grit chamber. The grit sinks down to the bottom and can be disposed of in a landfill or buried.

# data[].attributes.body
We used a spoon to swirl the water then poured out the water, leaving the grit behind in the bottom of the beaker.

# data[].attributes.body
The wastewater flows slowly in large tanks, allowing oil to settle on the top and sludge to settle on the bottom. The oil is scraped off the top of the water and the sludge is collected and used as fertilizer or compost.

# data[].attributes.body
We used panty hose attached to a spoon to scrape along the surface of the water and collect sludge, oil, and leftover tea leaves.

# data[].attributes.body
This process takes place in bioreactor tanks where bacteria are put into the wastewater to remove dissolved nutrients such as Carbon, Nitrogen, and Phosphorus. Some germs also die because of the conditions in the bioreactor tank.

# data[].attributes.body
In our lab, we used fine dry sand and ENOs to represent the nitrifying bacteria. These caused a bubbly reaction in the wastewater to show the "breakdown" and removal of pollutants.

# data[].attributes.body
Germs in the wastewater form into clumps and settle on the bottom of the water. The secondary sludge is removed, dried, and used for fertilizer or compost. The remaining water is sent to disinfection.

# data[].attributes.body
We let the water stand for one minute to observe the settling sludge and the effects of adding the fine dry sand and ENOs. Then we poured the wastewater from the SST beaker to the disinfection beaker, leaving the secondary sludge behind.

# data[].attributes.body
Exposure to chemicals like chlorine or ozone gas, or ultraviolet light is used to kill the remaining germs in the wastewater that could cause diseases and pollution.

# data[].attributes.body
In our lab, we poured bleach into the wastewater to purify the solution and finish the treatment process.

# data[].attributes.body
After treatment, the wastewater is returned to a river to go back into the natural water cycle.