According to the environmental protection Agency ( EPA ) , _________% of community water system users received their water from a surface water source, such as a lake.

In urban India, _________ % of the water supply is groundwater-based

Nearly ____ per cent of the water required for irrigation is met from groundwater resources .

Oxygen is provided to break the carbon in microorganisms to carbon dioxide and water to ___________ hence making it easy to be filtered.

The process of using chemicals to make suspended particles form a clump which can then be filtered is called

?

Choose the types of pipes used in water treatment:

Choose the common storm water pollutants.

A drainage pipe used to convey a stream through a road or embankment or may carry a stream for a long distance underground to a surface discharge location is called?

“the movement of water though the soil and its layers, by gravity and capillary forces.” is called?

Percolation tank is an ____________ surface water body, submerging in its reservoir a highly permeable land so that surface runoff is made to percolate and recharge the ground water storage.

Expand MAR.

“intentional recharge of water to aquifers for subsequent recovery or environmental benefit.” is termed as?

State True or False :

Permeable paving allows rainfall to move through the pavement to the soil beneath and provide water to landscape areas nearby.

_________ carry water like pipes and are designed as shallow, open, planted channels to convey runoff and remove pollutants.

State True or False :

swales are an alternative to a piped drainage system where space and grade is available.

An ___________ is a shallow, excavated trench that has been lined with geotextile and backfilled with stone to create an underground reservoir.

How many layers does a permeable paving have?

_____________ have a special soil filter media that can remove pollutants from road runoff.

State True or False :

Curb slots / curb depressions are actively used to accommodate sustainable methods.

How many steps does the waste water treatment plan have?

How many types of sewer system are present?

Sewers require a minimum cleaning velocity of ___________.

How many active compartments does a septic tank system have?

Traps are classified into _____ types based on their shapes.

Which among the following is a Green & sustainable concepts in waste water treatment,

Anaerobic Bacteria degrade organic materials in the absence of oxygen and produce ________________?

A series of shallow ponds in Lagoons/ wetlands act as ___________ ?

Plants such as water hyacinth or duckweek , in Lagoons / wetlands act to accumulate __________ ?

Expand SAT.

How many steps / process does the Soil Aquifer Treatment in the sustainable waste water treatment have?

India has built nearly________ number of major dams , barrages, etc. to store the river waters and enhance ground water recharging

The requirements of water vary tremendously. A normal figure in India’s metropolitan cities estimates between __________ liters per person per day.

In requirements for fire fightings, Rate of fire demands is calculated by Kuichling’s formula which gives amount of water required in litres / minute is given by the formula.

State True or False :

There are only two types of pavements : Permeable concrete and Permeable asphalt.

there are ____ main models of rainwater harvesting done in India.

PVC material will soften and deform if exposed to temperatures over _______ ?

Pipes used in water treatment plants :

A. Cast Iron ( CI ) pipes

B. steel pipes

C.Galvanized Iron Pipes

D.Concrete pipes

For communities with a population above 1,00,000 together with full flushing system, the rater per capita of water requirement that is required for domestic and non domestic needs is :

Locally available material such as ________________ sheets can be easily folded to required shapes to prepare semi-circular and rectangular gutters.

It is distributed through a series of underground pipes , sewers and septic tanks. It goes from the main streets through ___________________ to the individual buildings..

Uses of Rain water Harvesting :

Percolation tank should be constructed preferable on ___________ streams, located on highly fractured and weathered rocks which have lateral continuity down stream

For cities having population more 50,000 water required in m3 is computed by the equation

Q = 100(square root ) P

Where Q =? and P =?.

What is the recommended maximum water supply levels (lpcd) for towns provided with piped water supply but without sewerage system?