Question

7. One of the physical impact of
solid waste on water quality is
O Increased turbidity
Increased BOD
O Increased DO
O Decreased DO​

Answer 1

Answer:

1) Briefly describe the efforts made by Dayanand Saraswati for the unity of the

country.

2) Write the efforts made by Sir Saiyed Ahmed Khan for education.

3) Write two efforts made by Jyotiba Phule for the upliftment of women.

Answer 2

Answer:

ABSTRACT

Soil and groundwater samples were collected nearer to Pallavaram Solid waste landfill-site in Chennai to study the

possible impact of solid waste effect on soil and ground water quality. The physical and chemical parameters such

as temperature, pH, hardness, electrical conductivity, total dissolved solids, total suspended solids, alkalinity,

calcium, magnesium, chloride, nitrate, sulphate, phosphate and the metals like sodium, potassium, copper,

manganese, lead, cadmium, chromium, nickel, palladium, antimony were studied using various analytical

techniques. It has been found that most of the parameters of water are not in the acceptable limit in accordance with

the IS 10500 Drinking Water Quality Standards. It is concluded that the contamination is due to the solid waste

materials that are dumped in the area.

Key words: Pallavaram, water quality, ground water, solid waste.

INTRODUCTION

Enormous amounts of solid waste produced in and around Chennai urban areas are dumped nearer to

Pallavaram solid waste landfill site. This municipal solid waste normally termed as “garbage” is an

inevitable by product of human activity which is disposed through dumping. Solid waste land filling is the

most common method of solid waste disposal. The landfill site nearer to Pallavaram are open dumpsites,

because the open dumpsites are low operating costs and lack of expertise and equipment provided no

systems for leachate collections. Open dumps are unsightly, unsanitary, and generally smelly. They attract

scavenging animals, rats, insects, pigs and other pests. Surface water percolating through the trash can

dissolve out or leach harmful chemicals that are then carried away from the dumpsites in surface or

subsurface runoff. Among these chemicals heavy metals are particularly insidious and lead to the

phenomenon of bioaccumulation and biomagnifications. These heavy metals may constitute an

environmental problem, if the leachate migrates into the ground water. The presence of bore well at the

landfill sites to draw ground water threatens to contaminate the ground water1

.

A water pollutant is a chemical or physical substance present in it at the excessive levels capable of

causing harm to living organisms. The physical hazards are the dissolved solids and suspended solids.

The chemical hazards are the copper, manganese, lead, cadmium, phosphate, nitrate etc. As the public

health concern, the ground water should be free from physical and chemical hazards. The people in and

around the dumping site are depending upon the ground water for drinking and other domestic purposes.

The soil pollution arises due to the leaching of wastes from landfills and the most common pollutant

involved is the metals like copper, lead, cadmium, mercury etc., The Contamination of ground water and

soil is the major environmental risk related to unsanitary land filling of solid waste. The study of Impact

of solid waste on water quality of Bishnumati and surrounding areas in Kathmandu, Nepal reveals that the

river is heavily polluted2

.

Explanation:

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