Mayank Bs Swge Ppt

8/3/2019 Mayank Bs Swge Ppt

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BUILDING SERVICESSEWAGEDISPOSAL

TREATMENT

EFFECTS

STORMWATERTREATMENT

LAND FARMING

LAND TREATMENT


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SEWAGESEWAGESewage is water-carried waste, in solution or suspension,

that is intended to be removed from a community. Also

known as , it is more than 99% water and is

characterized by or , physicalcondition, chemical constituents and the bacteriological

organisms that it contains


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OBJECTIVESOBJECTIVESIts objective is to produce an environmentally-safe fluid

waste stream (or treated ) and a solid waste (or

treated ) suitable for disposal or reuse (usually as

farm ). Using advanced technology it is nowpossible to re-use sewage effluent for drinking water,

although is the only country to implement

such technology on a production scale in its production of

.


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METHODSMETHODSSewage can be treated close to where it is created, a

decentralized system (in or

), or be collected and

transported via a network of pipes and pump stations to amunicipal treatment plant, a centralized system (see

and ). Sewage

collection and treatment is typically subject to local, state

and federal regulations and standards. Industrial sources of

wastewater often require specialized treatment processes


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Sewage treatment generally involves three stages,

Primary

Secondary

Tertiary


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Sludge Treatment and DisposalSludge Treatment and Disposal


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SEWAGE SICKNESSSEWAGE SICKNESSAll categories of sewage are likely to carrythat can transmit disease to humans and other animals; containorganic matter that can cause odor and nuisance problems; holdnutrients that may cause of receiving water bodies;and can lead to . Proper collection and safe, nuisance-freedisposal of the liquid wastes of a community are legally recognized asa necessity in an urbanized, industrialized society. The reality is,however, that around 90% of wastewater produced globally remainsuntreated, causing widespread water , especially in low-income countries.

Increasingly, is using untreated wastewater for irrigation.

Cities provide lucrative markets for fresh produce, so are attractiveto farmers. However, because agriculture has to compete forincreasingly scarce water resources with industry and municipal users,there is often no alternative for farmers but to use water pollutedwith urban waste, including sewage, directly to water their crops.There can be significant health hazards related to using water loadedwith pathogens in this way, especially if people eat raw vegetables that

have been irrigated with the polluted water.


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LAND FARMINGLAND FARMINGLand Farming is a treatment process thatis performed in the upper zone or in biotreatment cells.

, sediments, or sludges are incorporatedinto the soil surface and periodically turned over (tilled) to

aerate the mixture.This technique has been successfully used for years in themanagement and disposal of oily sludge and otherrefinery wastes. In situ systems have been used to treat nearsurface soil contamination for andThe equipment employed in land farming is typical of that used

in operations. These land farming activitiescultivate and enhance degradation of hazardouscompounds. As a rule of thumb, the higher the

(i.e., the more rings within a polycyclic aromatichydrocarbon), the slower the degradation rate. Also, the more

or the compound, the more difficult it

is to degrade.


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LAND TREATMENTLAND TREATMENT


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STORMWATERSTORMWATERStormwateris water that originates during

events. It may also be used to apply towater that originates with snowmelt that enters thestormwater system. Stormwater that does not soak into

the ground becomes , which either flowsdirectly into or is channeled into

, which eventually discharge to surfacewaters.

Stormwater is of concern for two main issues: one related

to the volume and timing of runoff water ( controland water supplies) and the other related to potentialcontaminants that the water is carrying, i.e.

.


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STORMWATER DISPOSALSTORMWATER DISPOSAL


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RESIDENTIAL STORMWATER MANAGEMENTRESIDENTIAL STORMWATER MANAGEMENT

y When we build or introduce new surfaces to an existing landscape, its important toconsider the natural flow of water in that area may be disrupted. Adding impervioussurfaces like roofs and residential driveways increases the amount of stormwater runoff,which collects particles of oil, dust, and other pollutants as it travels over the surface ofthe ground.

y Drainage

y Permeable Pavers

y This results in an excess of stormwater runoff, which left untreated will travel through

drains and gutters until finally depositing into lakes, streams, and the ocean. Negativeconsequences of this include the following:

y Pollutants are carried into the oceans and our waterways where they can affect wildlifeand water quality

y Debris carried in stormwater can clog our storm drains and cause residential flooding

y Increased volumes of stormwater can erode streambanks and hillsides

y Contaminated water can lead to beach and lake closures

y To avoid these adverse impacts to our property and the environment, federal, state, andlocal laws and regulations require that stormwater be managed by residentialhomeowners and property managers.


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THANK YOU

FROM :-

MAYANK AGGARWAL

SEMESTER IV

101862036291

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