5. Exercises V

 

Use an planetariumherbariumaquarium aerator to introduce air bubbles into the sample within the glass jar. Keep the aerator in place overnight as it will take several hours for it to aerate. Use a mixer or a mechanical stirrer if you don't have an aerator. This enlargereducesincrease the disagreeable smell of wastewater.

The water is subsequently filtered through the layers of fine gravel, medium gravel, and sand. Multiple types of impurities are seeped filteredpercloted away to make wastewater clean. We filter the water constantly till it becomes clear.

To disinfect water, use a tablet containing ozonenitrogen chlorine.