engineering environment

8/4/2019 Engineering Environment

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ENGINEERING ENVIRONMENT


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WASTEWATER TREATMENTPLANT


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1

8

5 63

7

4

2

PRELIMINARY

SECONDARYAIR

1. SCREENING2. GRIT REMOVAL3. PRIMARY CLARIFIER

4. AERATION TNK5. SECONDARY CLARIFIER

6.CHLORINATION7. DIGESTION

8. DEWATERING

INFLUENT

EFFLUEN


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EFFLUENTEffluent is an outflowing of water or gas from a natural body of water, or froma human-madestructure.
http://en.wikipedia.org/wiki/Human-madehttp://en.wikipedia.org/wiki/Human-madehttp://en.wikipedia.org/wiki/Human-madehttp://en.wikipedia.org/wiki/Human-made


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SLUDGESludge refers to the residual, semi-solidmaterial left from industrial wastewater,orsewagetreatment processes. It can also refer to the settled suspension obtainedfrom conventional drinking water treatment,[1] and numerous other industrialprocesses.
http://en.wikipedia.org/wiki/Quasi-solidhttp://en.wikipedia.org/wiki/Wastewaterhttp://en.wikipedia.org/wiki/Sewagehttp://en.wikipedia.org/wiki/Sewage_treatmenthttp://en.wikipedia.org/wiki/Sludgehttp://en.wikipedia.org/wiki/Sludgehttp://en.wikipedia.org/wiki/Sewage_treatmenthttp://en.wikipedia.org/wiki/Sewagehttp://en.wikipedia.org/wiki/Wastewaterhttp://en.wikipedia.org/wiki/Quasi-solidhttp://en.wikipedia.org/wiki/Quasi-solidhttp://en.wikipedia.org/wiki/Quasi-solid


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PRIMARY TREATMENT

-Removal of solids by settling or sedimentation- usually physical processes


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BAR SCREENSTo remove large material that will damage equipments or hinder treatmentoperation.


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COMMINUTORTo grinde solids to smaller size for higher treatment operation.


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GRIT CHAMBERTo remove heavier slugs like sand/grit.


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CIRCULAR CLARIFIERTo remove settleable solids. In a circular shape.


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RECTANGULAR CLARIFIERTo remove settleable solids. In a rectangular shape.


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SECONDARY TREATMENT Reduction / decreasing oxygen or organic matter.

Usually biological processes


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A. FIXED FILM REACTORS

TRICKLING FILTERROTATING BIOLOGICALCONTACTORS

consists of a fixed bedofrocks, lava, coke, gravel, slag,p

olyurethanefoam,sphagnum peat moss,ceramic, orplastic media overwhichsewage orother wastewater flowsdownward and causes a layer

of microbialslime (biofilm) togrow, covering the bed of media.

a biologicaltreatment processused in the treatmentofwastewaterfollowing primarytreatment.
http://en.wikipedia.org/wiki/Rock_(geology)http://en.wikipedia.org/wiki/Lavahttp://en.wikipedia.org/wiki/Cokehttp://en.wikipedia.org/wiki/Gravelhttp://en.wikipedia.org/wiki/Slaghttp://en.wikipedia.org/wiki/Polyurethanehttp://en.wikipedia.org/wiki/Polyurethanehttp://en.wikipedia.org/wiki/Foamhttp://en.wikipedia.org/wiki/Peat_mosshttp://en.wikipedia.org/wiki/Porous_mediahttp://en.wikipedia.org/wiki/Sewagehttp://en.wikipedia.org/wiki/Wastewaterhttp://en.wikipedia.org/wiki/Microbialhttp://en.wikipedia.org/wiki/Biofilmhttp://en.wikipedia.org/wiki/Biologicalhttp://en.wikipedia.org/wiki/Wastewaterhttp://en.wikipedia.org/wiki/Sewage_treatmenthttp://en.wikipedia.org/wiki/Sewage_treatmenthttp://en.wikipedia.org/wiki/Sewage_treatmenthttp://en.wikipedia.org/wiki/Sewage_treatmenthttp://en.wikipedia.org/wiki/Wastewaterhttp://en.wikipedia.org/wiki/Biologicalhttp://en.wikipedia.org/wiki/Biofilmhttp://en.wikipedia.org/wiki/Microbialhttp://en.wikipedia.org/wiki/Wastewaterhttp://en.wikipedia.org/wiki/Sewagehttp://en.wikipedia.org/wiki/Porous_mediahttp://en.wikipedia.org/wiki/Peat_mosshttp://en.wikipedia.org/wiki/Peat_mosshttp://en.wikipedia.org/wiki/Foamhttp://en.wikipedia.org/wiki/Polyurethanehttp://en.wikipedia.org/wiki/Polyurethanehttp://en.wikipedia.org/wiki/Slaghttp://en.wikipedia.org/wiki/Gravelhttp://en.wikipedia.org/wiki/Cokehttp://en.wikipedia.org/wiki/Lavahttp://en.wikipedia.org/wiki/Rock_(geology)


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B. SUSPENDED GROWTH

ACTIVATEDSLUDGEPROCESS

- Activatedsludge is a

process fortreating sewageand industrialwastewaters using air and abiological floc

composed ofbacteria andprotozoans.
http://en.wikipedia.org/wiki/Sewagehttp://en.wikipedia.org/wiki/Wastewater_treatmenthttp://en.wikipedia.org/wiki/Wastewater_treatmenthttp://en.wikipedia.org/wiki/Wastewater_treatmenthttp://en.wikipedia.org/wiki/Wastewater_treatmenthttp://en.wikipedia.org/wiki/Sewage


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3. TERTIARY TREATMENT

- Polishing or clearing up processes- removal of nutrients.

4. SOLIDS TREATMENT- Collection, stabilization and disposal of solids.

5. ADVANCED TREATMENT


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HAZARDOUS WASTE

MANAGEMENT


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Characteristic Wastes1. Ignitability - Ignitable wastes can create fires under certain

conditions, are spontaneously combustible, or have a flash pointless than 60 C (140 F). Examples include waste oils and usedsolvents.

2. Corrosivity - Corrosive wastes are acids or bases (pH less than orequal to 2, or greater than or equal to 12.5) that are capable ofcorroding metal containers, such as storage tanks, drums, andbarrels. Battery acid is an example.

3. Reactivity - Reactive wastes are unstable under "normal"conditions. They can cause explosions, toxic fumes, gases, or vapors

when heated, compressed, or mixed with water. Examples includelithium-sulfur batteries and explosives.

4. Toxicity - Toxic wastes are harmful or fatal when ingested orabsorbed (e.g., containing mercury, lead, etc.). When toxic wastesare land disposed, contaminated liquid may leach from the waste and

pollute ground water.


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POLLUTION


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POLLUTIONIs the introduction of contaminants into a natural environment that causes instability,disorder, harm or discomfort to theecosystem i.e. physical systems or livingorganisms.[1] Pollution can take the form ofchemical substances or energy, such asnoise, heat, or light.
http://en.wikipedia.org/wiki/Ecosystemhttp://en.wikipedia.org/wiki/Pollutionhttp://en.wikipedia.org/wiki/Chemical_substancehttp://en.wikipedia.org/wiki/Energyhttp://en.wikipedia.org/wiki/Energyhttp://en.wikipedia.org/wiki/Chemical_substancehttp://en.wikipedia.org/wiki/Chemical_substancehttp://en.wikipedia.org/wiki/Chemical_substancehttp://en.wikipedia.org/wiki/Pollutionhttp://en.wikipedia.org/wiki/Ecosystem


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HEAT POLLUTIONis a term used to describe the release of heat into the environment by human activities.[1] Bycontrast, global warming is thought to be the result of the increase in greenhousegases (CO2 emissions).

[2] Experts on the climate have debated the broader subject of global warming aswell as its potential constituents. These include heat pollution, the greenhouse effect, and solar variation.
http://en.wikipedia.org/wiki/Global_warminghttp://en.wikipedia.org/wiki/Greenhouse_gashttp://en.wikipedia.org/wiki/Heat_pollutionhttp://en.wikipedia.org/wiki/Global_warminghttp://en.wikipedia.org/wiki/Greenhouse_gashttp://en.wikipedia.org/wiki/Greenhouse_gashttp://en.wikipedia.org/wiki/Heat_pollutionhttp://en.wikipedia.org/wiki/Heat_pollutionhttp://en.wikipedia.org/wiki/Greenhouse_gashttp://en.wikipedia.org/wiki/Greenhouse_gashttp://en.wikipedia.org/wiki/Global_warminghttp://en.wikipedia.org/wiki/Heat_pollution


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NOISE POLLUTIONis excessive, displeasing human, animal or machine-createdenvironmentalnoise that disrupts the activity or balance of human or animal life. Thewordnoisecomes from the Latin word nauseas, meaning seasickness.
http://en.wikipedia.org/wiki/Environmental_noisehttp://en.wikipedia.org/wiki/Environmental_noisehttp://en.wikipedia.org/wiki/Noisehttp://en.wikipedia.org/wiki/Nauseahttp://en.wikipedia.org/wiki/Nauseahttp://en.wikipedia.org/wiki/Noisehttp://en.wikipedia.org/wiki/Environmental_noisehttp://en.wikipedia.org/wiki/Environmental_noisehttp://en.wikipedia.org/wiki/Environmental_noise


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LIGHT NOISEAny adverse effect of artificial light including sky glow, glare, light trespass,lightclutter, decreased visibility at night, and energy waste.[1]
http://en.wikipedia.org/wiki/Sky_glowhttp://en.wikipedia.org/wiki/Glare_(vision)http://en.wikipedia.org/wiki/Light_pollutionhttp://en.wikipedia.org/wiki/Light_pollutionhttp://en.wikipedia.org/wiki/Light_pollutionhttp://en.wikipedia.org/wiki/Light_pollutionhttp://en.wikipedia.org/wiki/Light_pollutionhttp://en.wikipedia.org/wiki/Light_pollutionhttp://en.wikipedia.org/wiki/Light_pollutionhttp://en.wikipedia.org/wiki/Light_pollutionhttp://en.wikipedia.org/wiki/Light_pollutionhttp://en.wikipedia.org/wiki/Light_pollutionhttp://en.wikipedia.org/wiki/Glare_(vision)http://en.wikipedia.org/wiki/Sky_glow


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School PrayerGod, our Father,Creator of all good thingsin the world and within our school community:

We thank you for the gift of this day,for our families and friendsand for this safe place to learn and grow.

We ask You to bless all who teach and learn.

Through Your Holy Spirit,guide us as we grow in faith and loveand give us the courageto be more like Your Son.

We ask this, in Jesus' name.

Amen.~~~~~~

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