Question

2)When we dispose the wastewater to the environment without treatment it will cause many problems Discuss this issue

3)Discuss the role of the microbes in wastewater treatment plant

4) the microorganisms have many benefits and risks for the soil. Discuss these benefits and risks ?

5) How the soil characteristics can affect the microbe’s activities ?

Answer 1

ANSWER -

2) the waste water contains very harmful pathogenic bacteria which are harmful to the soil as well as the water reservoir, it infects the water source in which it is being transferred. it causes severe impact on water reservoirs, on soil and may imbalance the ecosystem,along with these , this water may give birth to various severe disease which are lethal to the humans . also, the high level of toxicity can affect the soil and can lead to biomagnification. the untreated water when taken up by animals, may lead to their deaths and transfer of severe disease among animals

3)microbes play a very crucial role in wastewater treatment, their main role is to reduce the volume of sludge present in the water, and to produce methane gas and to remove harmful polutants like phosphorous sulphur from the water. the another function is to increase the oxygen level in the waste water and reduce the biological oxygen demand. they also help in air circulation , by purifying the water.

4)microoroganism have various benefits and risks to the soil, the benefits is that they act a sdecomposers and increases the fertility of the soil and make the soil more useful for the plants to grow, plays a crucial role in nutrient cycle in which soil is also a part, soil microbes create humus, micro organism produce vitamins and plant hormones, some micro organism increaes the availability of mmineral nutrients, along with these postive benfits, some negative benfits are soil micro organism are pathogenic to plant and may cause considerable damage to soil as well as plant.

5)for microbe to perform at best, there are certain criteria which aree required, like the soil must be moistured up , have a range temperature of 24 to 36 degrees, the soil must have small particles and various others. thus,these properties affect the activity of microbes in the soil