What are the 3 steps of cleaning used water?

Answer 1

The first step in the process of water recycling is the

wastewater treatment plant (WWTP) that reduces the

suspended solids, organic content and nutrients that are

present in the incoming raw wastewater. Currently, the

effluents are discharged from these plants after treatment to

comply with the Queensland Environmental Protection

Agency standard suitable for discharge to local waterways

and Moreton Bay.

Extensive testing carried out at WWTPs in Queensland has

proven that this treatment step also achieves a significant

removal of many of the synthetic chemicals present in our

wastewater such as estrogens or personal care products.

The WCRWProject will collect the outflows from six

existing wastewater treatment plants in Brisbane and

Ipswich to transport to three new advanced water treatment

(AWT) plants where the water will receive additional high

quality treatment.

The first AWT plant will be located at Bundamba and in the

project's second stage, two additional AWT plants will be

built near the Gibson Island and Luggage Point wastewater

treatment plants.

Answer 2

When we visited different water companies, we heard a lot about water filtration. Groundwater is naturally filtered through layers of dirt, stone, gravel, and sand. When the water travels through these layers, it is cleaned. This is one of the reasons that many people think that groundwater is very clean.

Water companies filter the water in this way, too. Water is sent through the same kind of layers before it is sent out to the towns that buy it.

We decided to test the idea by creating our own water filter. You can try this, too!

Making a water filter

Supplies

A clear plastic bottle

1/2 cup dirt2 cups sand2 cups gravelglass of waterspoon

Step 1: Cut the bottom off of the bottle about two inches from the bottom. This part can be dangerous, so it is a good idea to get help from an adult for this part. Leave the cap on it.

Step 2: Turn the bottle upside down so that you can pour the gravel in it. It works best if you put larger gravel in first because it plugs up the hole that is capped.

Step 3: Pour the sand over the gravel. It will fall through the gaps in the gravel.

Step 4: Mix the dirt in the water.

Step 5: Pour the dirty water on top of the sand in the bottle.

Step 6: Carefully take off the bottle cap and put the bottle spout into a tall glass or some container that can hold your filter upright. Watch the water seep through the sand and gravel. In the picture to the right, you can see the layers get darker as the water flows down through them. Click on the picture to make it bigger and easier to see.

Step 7: Check out that water! The layers of sand and gravel should take out the dirt in the water.