Which of the following should be provided in the case where aeration is absent?

Which of the following should be provided in the case where aeration is absent? Explanation: If aeration is not provided, baffles or mechanical mixers must be provided to avoid stratification and short circuiting in equalization basins.

Which is a process which involves for the removal of the nitrogen?

Which of the following process is employed to gain sufficient head for the waste water?

Which of the following process is not used for waste treatment?

Which type of treatment methods are used for municipal and industrial wastewater Mcq?

What is the minimum percentage of solids in wastewater?

What is the minimum percentage of solids in wastewater? Explanation: The organic matter consists mainly of proteins, carbohydrates and fats. Between 40 and 65 % of the solids in an average wastewater are suspended.

What happens to the solids in wastewater at a wastewater treatment plant?

The process occurs when a wastewater treatment plant is operating properly. Most solids in the wastewater will be removed at the plant, while the water is discharged as effluent to the receiving waters. These solids, or sludge, must be stabilized and reduced in volume before they can be reused or disposed of.

Which of the following impurities are removed in trickling filter process?

The microorganisms absorb the organic matter in the sewage and stabilize it by aerobic metabolism, thereby removing oxygen-demanding substances from the sewage. Trickling filters remove up to 85 percent of organic pollutant from sewage.

What is the intermediate zone composed of in aerobic ponds?

Explanation: Aerobic-anaerobic ponds consist of three zones: a surface zone of algae and aerobic bacteria in a symbiotic association; an intermediate zone populated with facultative bacteria (aerobic or anaerobic); and an anaerobic bottom zone where settled organic solids are decomposed by anaerobic bacteria.

Why is it important to reduce the amount of biodegradable organic matter and nutrients during water treatment?

In fact, too much organic matter in wastewater can be devastating to receiving waters. Large amounts of biodegradable materials are dangerous to lakes, streams, and oceans, because organisms use dissolved oxygen in the water to break down the wastes.

What percentage of solids does wastewater contain?

What percentage of solids does wastewater contain? Explanation: Wastewater contains 99.9% water and 0.1% solids.

Which of the following is physical characteristics of industrial wastewater?

Explanation: The principal physical characteristics of wastewater include solids content, colour, odour and temperature. The total solids in a wastewater consist of the insoluble or suspended solids and the soluble compounds dissolved in water.

How much sludge does a wastewater treatment plant produce?

Sludge Quantity

Generally, solids production rates range between 0.2 and 0.3 kg/m3 (0.8 to 1.2 dry tons/MG) of wastewater treated.

How do you create activated sludge process?

How does STP plant work?

Using internal mechanisms, a sewage treatment plant works by breaking down solid waste to produce a cleaner, more environmentally friendly effluent. Wastewater and sewage are supplied to the primary tank, where the solids and liquids disperse. The resulting liquor flows into the biozone chamber.

How can dried sludge be used?

Dried sludge is used as manure, returning organic matter and nutrients to the soil.

How do you filter wastewater?

You can use special kind of filters to pass the wastewater and separate the contaminants and insoluble particles present in it. The sand filter is the most commonly used filter. The grease found on the surface of some wastewater can also be removed easily through this method.

How do you make an oxidation pond?

It uses microorganisms like bacteria, algae and light energy (sunlight) to stabilize the wastewater. The oxidation pond is constructed 1-1.5 m deep inside the soil and provided with inlet and outlet systems. Earlier, symbiotic algae and bacterial growth were used to treat the wastewater under the act of sunlight.

How do effluent ponds work?

In effluent ponds EM works by processing the carbon source in the pond, eliminating harmful pathogens and stimulating the existing microbial population, thereby improving the decomposition of effluent.

How is sludge disposed?

Once treated, sludge can be recycled or disposed of using three main routes: recycling to agriculture (landspreading), incineration or landfilling.

How does wastewater affect water quality?

In fact, too much organic matter in wastewater can be devastating to receiving waters. Large amounts of biodegradable materials are dangerous to lakes, streams, and oceans, because organisms use dissolved oxygen in the water to break down the wastes.