SOLID TREATMENT PLANT OF CHITKARA UNIVESITY,PUNJAB

(STP)

TABLE OF CONTENTS

INTRODUCTION OBJECTIVES OF A STP WHAT IS A STP? ORIGIN OF SEWAGE OVERVIEW OF THE STP PLANT WORKING OF STP BYPRODUCT BENEFITS OF STP IMPACT ON NATURAL ENVIRONMENT SUGGESTIONS REFERENCES

INTRODUCTION

The first sewage treatment plant was built in singapore to reduce water pollution. The sewage treatment plant in chitkara univesity was built in 2008 in order to reduce pollution and as it was a huge success, another plant was also built in 2012.

OBJECTIVES OF A STP

The objective of a sewage treatment plant is to produce a disposable effluent without causing harm to the surrounding environment.

Another objective of this sewage treatment plant is to recycle water n thus SAVE WATER by purifying the used water again.

Main aim of sewage treatment plant is to reduce WATER POLLUTION.

What is a stp?

Sewage treatment is the process of removing CONTAMINANTS from WASTEWATER and household SEWAGE, both RUNOFF (EFFLUENTS), domestic, commercial and institutional. It includes physical, chemical, and biological processes to remove physical, chemical and biological contaminants. It produces an environmentally safe fluid waste stream (or treated EFFLUENT) and a solid waste (or treated SLUDGE) suitable for disposal or reuse (usually as farm FERTILIZER). Using advanced technology it is now possible to re-use sewage effluent for drinking water.

ORIGINS OF SEWAGE

The waste here generally includes liquid from toilets, baths, showers, kitchens, sinks, gardens and so forth that is discharged by sewers.

In university the waste is mainly generated by: Boys/girls hostels Hostel mess Canteen Cafeteria Blocks of every department

OVERVIEW OF STP PLANT

STP included following parts which process to give clear water…

BLOWERS : stp includes two blowers n these are used to produce vibration.

• FEED PUMP : there is only one feed pump and it is used to carry water to tank

• CARBON FILTER there is only one carbon filter and it is used to clear water

• SAND FILTER there is only one sand filter which is used to remove smell from the water.

Working of STP

WORKING OF A STP

Liquid from different sources if collected in tank and sent to blowers through pipelines.

Blowers work with electricity and vibrate the water inside so that the dirt and heavy particles such as wood and stones etc. settle down.

This water is then cleared from the top with the help of a feed pump and sent to clarifier for further process.

In clarifier sludge is removed from the water. As sludge settles to the bottom of the clarifier, lighter

materials float to the surface and is known as scum. Slow-moving rakes skim the scum off the surface of the wastewater. Scum is thickened and pumped to the digesters along with the sludge.

WORKING OF STP

This water is then sent to carbon filter with the help of high pressure pump.

In this carbon filter chemicals like ferric alum and poly electrolyte are added which removes harmful bacteria and microorganisms from the water.

Further water is transferred to sand filter which removes smell from water and water gets clarified.

This clear water is stored in tanks and sent to different units through pipelines..!!!

byproducts

Another part of treating wastewater is dealing with solid waste material. These solid are either kept for 20-30 days in large, heated and enclosed tanks called digesters. Here bacteria breakdown these solids, reducing its volume, odor and getting rid of organisms that can cause diseases. The finished product is finally used as fertilizer or manure as it is rich in nutrients and can help in growth of plants.

BENEFITS OF A STP

Upgrading the quality of life..

Preserving the

natural environm

ent

Saving and

processing

water

Production of

fertilizers

Economic

development

IMPACT ON NATURAL ENVIRONMENT

Sewage treatment plants can have multiple effects on nutrient levels in the water that the treated sewage flows into.

Sludge generated during the clearance process can prove to be harmful if not disposed or used properly.

Ferric alum is an example of anaerobic water treatment which is somewhat harmful to environment.

SUGGESTIONS

Another grid should be introduced in the water treatment plant which should control the level of nutrients in clear water.

Ferric alum can be replaced with bleaching powder as it is more organic process for removal of harmful bacteria.

REFERENCES

Wikipedia Google