it is simple so use by download from this website.

3. OBJECTIVIE OF THE STUDY
oUNDERSTAND WASTEWATER TREATMENT UNIT OPERATION AND PROCESS
oDISCUSS THE STANDARDIZED WASTE WATER OPERATION UNIT
oTO DISCUSS THE NATURE OF POLLUTANTS REMOVED FROM THE STP
oCOMPARE THE STANDARD SEWAGE TREATMENT PLANT WITH DMU SEWAGE TREATMENT PLANT (STP)
BASED ON DIFFERENT PARAMETERS

4. INTRODUCTION
• THE SECTION PROVIDES AN OVERVIEW OF WASTEWATER TREATMENT AND IS INTENDED TO PROVIDE A
BRIEF DESCRIPTION OF WHAT PROCESSES MAY BE AT WASTEWATER PLANT.
• WASTEWATER TREATMENT IS ONE OF THE MOST IMPORTANT SERVICES A MUNICIPALITY MAY PROVIDE
AND ONE OF THE LEAST VISIBLE.
• THERE MAY BE DIFFERENCES BETWEEN WASTEWATER TREATMENT PLANTS IN TERMS OF SIZE, GROUND
AREA, SHAPE OF TANKS (CIRCULAR OR RECTANGULAR), OR THE TYPES OF TREATMENT PROCESSES THEY
USE.

5. WHAT IS WASTEWATER?
• WASTEWATER IS THE POLLUTED FORM OF WATER GENERATED FROM RAINWATER RUNOFF AND HUMAN
ACTIVITIES.
• WASTEWATER REFERS TO ALL EFFLUENT FROM A HOUSEHOLD, COMMERCIAL ESTABLISHMENTS AND
INSTITUTIONS, HOSPITALS, INDUSTRIES, AND SO ON. IT ALSO INCLUDES STORMWATER AND URBAN
RUNOFF, AGRICULTURAL, HORTICULTURAL, AND AQUACULTURE EFFLUENT.
• IT IS ALSO CALLED SEWAGE

6.  EFFLUENT:- REFERS TO THE SEWAGE OR LIQUID WASTE THAT IS DISCHARGED INTO WATER
BODIES EITHER FROM DIRECT SOURCES OR FROM TREATMENT PLANTS.
 INFLUENT:- REFERS TO WATER, WASTEWATER, OR OTHER LIQUID FLOWING INTO A RESERVOIR,
BASIN, OR TREATMENT PLANT.
• SEWAGE IS ALSO WASTEWATER. IT IS WASTEWATER ORIGINATING FROM TOILETS AND BATHROOM
FIXTURES, BATHING, LAUNDRY, KITCHEN SINKS, CLEANERS, AND SIMILAR DIRTY WATER THAT IS
PRODUCED IN HOUSEHOLDS AND PUBLIC PLACES.
• WATER USED TO IRRIGATE TURF AND GARDENS, SWIMMING POOLS, ROOF DRAINAGE, SURFACE RUNOFF,
AND STORMWATER ARE ALL WASTEWATER BUT NOT CLASSIFIED AS SEWAGE.

7. WHY TREAT WASTEWATER?
• WE NEED TO REMOVE THE WASTEWATER POLLUTANTS TO PROTECT THE ENVIRONMENT AND PROTECT
PUBLIC HEALTH.
• WHEN WATER IS USED BY OUR SOCIETY, THE WATER BECOMES CONTAMINATED WITH POLLUTANTS. IF
LEFT UNTREATED, THESE POLLUTANTS WOULD NEGATIVELY AFFECT OUR WATER ENVIRONMENT.
• FOR EXAMPLE, ORGANIC MATTER CAN CAUSE OXYGEN DEPLETION IN LAKES, RIVERS, AND STREAMS. THIS
BIOLOGICAL DECOMPOSITION OF ORGANICS COULD RESULT IN FISH KILLS AND/OR FOUL ODORS.
• WATERBORNE DISEASES ARE ALSO ELIMINATED THROUGH PROPER WASTEWATER TREATMENT.
ADDITIONALLY, THERE ARE MANY POLLUTANTS THAT COULD EXHIBIT TOXIC EFFECTS ON AQUATIC LIFE AND
THE PUBLIC.

8. HOW DO WE COLLECT THE WASTEWATER?
• THE SEWER OR COLLECTION SYSTEM IS DESIGNED SO THAT IT FLOWS TO A CENTRALIZED TREATMENT
LOCATION. THE COLLECTION SYSTEM IS COMPRISED OF SMALLER SEWERS WITH A DIAMETER OF ABOUT
FOUR INCHES. AS MORE HOMES AND COMPANIES ARE CONNECTED ALONG THE SYSTEM, THE PIPES
BECOME LARGER IN DIAMETER. WHERE GRAVITY SYSTEMS ARE NOT PRACTICAL, PUMPING STATIONS ARE
OFTEN INCLUDED TO LIFT THE WASTEWATER.

9. BOD - Biochemical Oxygen
Demand
a measure of the concentration of organics in the wastewater.
Clarifier A piece of wastewater treatment equipment used to "clarify" the wastewater,
usually some sort of holding tank that allows settling.
COD - Chemical Oxygen
Demand
The amount of chemical oxidant required to breakdown the wastes, also an
indicator of the concentration of organics.
Detention Time Retention Time, Residence Time How long on average wastewater
undergoes the wastewater treatment process
Disinfection The use of chemicals to kill any disease causing organisms in the
polished wastewater. UV light can also be used.
Dissolved Oxygen (DO) The amount of oxygen dissolved in the water. Measured in
milligrams per liter.
TSS - Total Suspended
Solids
The total solid particles that are suspended (as opposed to dissolved) in the
wastewater.

10. WHAT IS PRELIMINARY TREATMENT?
• PRELIMINARY TREATMENT PROCESSES ARE THE FIRST PROCESSES THAT THE WASTEWATER
ENCOUNTERS AS IT ENTERS THE TREATMENT PROCESS
SCREENINGS ARE STRING LIKE MATERIALS, RAGS AND LARGE FOREIGN OBJECTS LIKE STICKS OR
PERHAPS AN ERRANT GOLF BALL. THESE MATERIALS NEED TO BE REMOVED BECAUSE THEY CAN DAMAGE
MACHINERY OR CLOG PROCESSES. SCREENINGS ARE REMOVED USING A BAR SCREEN.

11. CONT.
• THE NEXT PROCESS IN PRELIMINARY TREATMENT IS GRIT REMOVAL. GRIT IS COMPRISED OF INORGANIC
MATERIAL SUCH AS SAND, GRAVEL, EGGSHELLS, ETC. THESE ITEMS ARE REMOVED TO PREVENT WEAR AND
ABRASION ON PUMPS AND OTHER MECHANICAL EQUIPMENT. GRIT CAN ALSO PLUG LINES AND PIPES AND
DOES NOT RESPOND TO BIOLOGICAL TREATMENT. IN THIS INFLUENT AREA, SAMPLING EQUIPMENT IS USED
TO COLLECT SMALL PORTIONS OF THE WASTEWATER FOR ANALYSIS. SAMPLING ENABLES THE OPERATOR
TO DETERMINE THE POLLUTANT LOADINGS ENTERING THE PLANT.

12. WHAT IS PRIMARY TREATMENT?
• PRIMARY TREATMENT IS A PHYSICAL SETTLING AND FLOATATION PROCESS THAT REMOVES SOLIDS.
What is Secondary Treatment?
• SECONDARY TREATMENT IS A BIOLOGICAL TREATMENT PROCESS USED TO STABILIZE THE DISSOLVED
SOLIDS.

13. WHERE DO ALL THE SOLIDS GO?
• SOLIDS THAT SETTLE OUT IN THE PRIMARY AND SECONDARY CLARIFIERS ARE REFERRED TO AS SLUDGE.
• SLUDGE THAT HAS BEEN PROCESSED TO REDUCE DISEASE-CAUSING ORGANISMS IS REFERRED TO AS
BIOSOLIDS.
• SLUDGE IS THE BYPRODUCT OF TREATING THE LIQUID WASTEWATER.

14. THE WASTEWATER TREATMENT
PROCESS
STAGE ONE — BAR SCREENING
REMOVAL OF LARGE ITEMS FROM THE INFLUENT TO PREVENT DAMAGE
TO THE FACILITY’S PUMPS, VALVES AND OTHER EQUIPMENT.
THE PROCESS OF TREATING AND RECLAIMING WATER FROM
WASTEWATER (ANY WATER THAT HAS BEEN USED IN HOMES, SUCH AS
FLUSHING TOILETS, WASHING DISHES, OR BATHING, AND SOME WATER
FROM INDUSTRIAL USE AND STORM SEWERS) STARTS WITH THE
EXPECTATION THAT AFTER IT IS TREATED IT WILL BE CLEAN ENOUGH TO
REENTER THE ENVIRONMENT.

15. STAGE TWO — SCREENING
REMOVAL OF GRIT BY FLOWING THE INFLUENT OVER/THROUGH A GRIT
CHAMBER.
FINE GRIT THAT FINDS ITS WAY INTO THE INFLUENT NEEDS TO BE REMOVED
TO PREVENT THE DAMAGE OF PUMPS AND EQUIPMENT DOWNSTREAM (OR
IMPACT WATER FLOW).
TOO SMALL TO BE SCREENED OUT, THIS GRIT NEEDS TO BE REMOVED FROM
THE GRIT CHAMBER.
THERE ARE SEVERAL TYPES OF GRIT CHAMBERS (HORIZONTAL, AERATED OR
VORTEX) WHICH CONTROL THE FLOW OF WATER, ALLOWING THE HEAVIER
GRIT TO FALL TO THE BOTTOM OF THE CHAMBER; THE WATER AND ORGANIC
MATERIAL CONTINUE TO FLOW TO THE NEXT STAGE IN THE PROCESS. THE
GRIT IS PHYSICALLY REMOVED FROM THE BOTTOM OF THE CHAMBER AND
DISCARDED.

16. STAGE THREE — PRIMARY CLARIFIER
INITIAL SEPARATION OF SOLID ORGANIC MATTER FROM WASTEWATER.
SOLIDS KNOWN AS ORGANICS/SLUDGE SINK TO THE BOTTOM OF THE TANK
AND ARE PUMPED TO A SLUDGE DIGESTOR OR SLUDGE PROCESSING AREA,
DRIED AND HAULED AWAY.
PROPER SETTLING RATES ARE A KEY INDICATOR FOR HOW WELL THE
CLARIFIER IS OPERATING. ADJUSTING FLOW RATE INTO THE CLARIFIER CAN
HELP THE OPERATOR ADJUST THE SETTLING RATES AND EFFICIENCY.
THE EFFECTIVENESS OF THE PRIMARY CLARIFICATION IS A MATTER OF
APPROPRIATE WATER FLOW. IF THE WATER FLOW IS TOO FAST, THE SOLIDS
DON’T HAVE TIME TO SINK TO THE BOTTOM RESULTING IN NEGATIVE IMPACT
ON WATER QUALITY DOWNSTREAM. IF THE WATER FLOW IS TOO SLOW, IT
IMPACTS THE PROCESS UP STREAM.

17. STAGE FOUR — AERATION
AIR IS PUMPED INTO THE AERATION TANK/BASIN TO ENCOURAGE
CONVERSION OF NH3 TO NO3 AND PROVIDE OXYGEN FOR BACTERIA TO
CONTINUE TO PROPAGATE AND GROW.
ONCE CONVERTED TO NO3, THE BACTERIA REMOVE/STRIP OXYGEN
MOLECULES FROM THE NITRATE MOLECULES AND THE NITROGEN (N) IS GIVEN
OFF AS N2↑ (NITROGEN GAS).
AT THE HEART OF THE WASTEWATER TREATMENT PROCESS IS THE
ENCOURAGEMENT AND ACCELERATION OF THE NATURAL PROCESS OF
BACTERIA, BREAKING DOWN ORGANIC MATERIAL. THIS BEGINS IN THE
AERATION TANK. THE PRIMARY FUNCTION OF THE AERATION TANK IS TO
PUMP OXYGEN INTO THE TANK TO ENCOURAGE THE BREAKDOWN OF ANY
ORGANIC MATERIAL (AND THE GROWTH OF THE BACTERIA), AS WELL AS
ENSURE THERE IS ENOUGH TIME FOR THE ORGANIC MATERIAL TO BE BROKEN
DOWN.

18. STAGE FIVE — SECONDARY CLARIFIER
TREATED WASTEWATER IS PUMPED INTO A SECONDARY CLARIFIER TO ALLOW
ANY REMAINING ORGANIC SEDIMENT TO SETTLE OUT OF TREATED WATER
FLOW.
AS THE INFLUENT EXITS THE AERATION PROCESS, IT FLOWS INTO A SECONDARY
CLARIFIER WHERE, LIKE THE PRIMARY CLARIFIER, ANY VERY SMALL SOLIDS
(OR FINES) SINK TO THE BOTTOM OF THE TANK. THESE SMALL SOLIDS ARE
CALLED ACTIVATED SLUDGE AND CONSIST MOSTLY OF ACTIVE BACTERIA. PART
OF THIS ACTIVATED SLUDGE IS RETURNED TO THE AERATION TANK TO
INCREASE THE BACTERIAL CONCENTRATION, HELP IN PROPAGATION, AND
ACCELERATE THE BREAKDOWN OF ORGANIC MATERIAL. THE EXCESS IS
DISCARDED.
THE WATER THAT FLOWS FROM THE SECONDARY CLARIFIER HAS
SUBSTANTIALLY REDUCED ORGANIC MATERIAL AND SHOULD BE APPROACHING
EXPECTED EFFLUENT SPECIFICATIONS.

19. STAGE SIX — CHLORINATION (DISINFECTION)
CHLORINE IS ADDED TO KILL ANY REMAINING BACTERIA IN THE CONTACT
CHAMBER.
WITH THE ENHANCED CONCENTRATION OF BACTERIA AS PART OF THE
AERATION STAGE, THERE IS A NEED TO TEST THE OUTGOING EFFLUENT FOR
BACTERIA PRESENCE OR ABSENCE AND TO DISINFECT THE WATER. THIS
ENSURES THAT HIGHER THAN SPECIFIED CONCENTRATIONS OF BACTERIA
ARE NOT RELEASED INTO THE ENVIRONMENT. CHLORINATION IS THE MOST
COMMON AND INEXPENSIVE TYPE OF DISINFECTION BUT OZONE AND UV
DISINFECTION ARE ALSO INCREASING IN POPULARITY. IF CHORINE IS USED,
IT IS IMPORTANT TO TEST FOR FREE-CHLORINE LEVELS TO ENSURE THEY
ARE ACCEPTABLE LEVELS BEFORE BEING RELEASED INTO THE
ENVIRONMENT.
BUT IN OUR CASE THIS STEP IS DONE VIA UV (ULTRAVIOLET RADIATION)

20. STAGE SEVEN — WATER ANALYSIS & TESTING
• TESTING FOR PROPER PH LEVEL, AMMONIA, NITRATES, PHOSPHATES, DISSOLVED OXYGEN, AND RESIDUAL
CHLORINE LEVELS TO CONFORM TO THE PLANT’S NPDES PERMIT ARE CRITICAL TO THE PLANT’S
PERFORMANCE.
• ALTHOUGH TESTING IS CONTINUOUS THROUGHOUT THE WASTEWATER TREATMENT PROCESS TO ENSURE
OPTIMAL WATER FLOW, CLARIFICATION AND AERATION, FINAL TESTING IS DONE TO MAKE SURE THE
EFFLUENT LEAVING THE PLANT MEETS PERMIT SPECIFICATIONS. PLANTS THAT DON`T MEET PERMIT
DISCHARGE LEVELS ARE SUBJECT TO FINES AND POSSIBLE INCARCERATION OF THE OPERATOR IN
CHARGE.

21. STAGE EIGHT — EFFLUENT DISPOSAL
AFTER MEETING ALL PERMIT SPECIFICATIONS, CLEAN WATER IS
REINTRODUCED INTO THE ENVIRONMENT.
ALTHOUGH TESTING IS CONTINUOUS THROUGHOUT THE WASTEWATER
TREATMENT PROCESS TO ENSURE OPTIMAL WATER FLOW, CLARIFICATION
AND AERATION, FINAL TESTING IS DONE TO MAKE SURE THE EFFLUENT
LEAVING THE PLANT MEETS PERMIT SPECIFICATIONS. PLANTS THAT DON`T
MEET PERMIT DISCHARGE LEVELS ARE SUBJECT TO FINES AND POSSIBLE
INCARCERATION OF THE OPERATOR IN CHARGE.

22. A. WHERE DOES THE WASTE WATER COMES FROM?
• DORMITORY
• KITCHEN
• ADMIN BUILDINGS
• HUMAN BAY PRODUCTS.
• GENERALLY THE WASTE TYPE IS CALLED DOMESTIC.
B. WHAT TYPES OF SEWER SYSTEM HAVE BEEN USED?
• - DEBRE MARKOS UNIVERSITY IS USED THE ACTIVATED WASTE WATER TREATMENT PLANT TYPE
• -CLOSED PIPE COMBINED SEWER SYSTEM.

23. C. WHAT ARE THE SEWER APPURTENANCES INCLUDED IN THE SEWAGE SYSTEM?
• PIPE: WITH 30CM DIAMETER
• PIPE TYPE =HIGH RESISTANCE DUCTILE AND TEMPERATURE RESISTANCE (HDP) PIPE MAN HOLE; HAVING: -
JUNCTION CONNECTION, BLADDER, COVER PAIN STOCK (CONTROLLING)
D. WHAT ARE THE TREATMENT UNITS INVOLVED IN DMU WWTP?
• -SCREEN
• -SAND TRAP (GRIT REMOVAL)
• -PRIMARY SEDIMENTATION TANK
• -AERATION TANK
• -SECONDARY SEDIMENTATION TANK
• -DISINFECTION UNIT (DU)

25. E. WHICH METHODS OF TREATMENT ARE APPLIED IN EACH UNIT?
• IN SCREENING: - FLOATING MATTER WILL TRAP BY THE BAR SCREENING. EXAMPLE: - PLASTIC MODUS, LEAVES ETC.
THEREFORE THE METHOD OF TREATMENT IN THIS UNIT IS CALLED TRAPPING.
• IN SAND TRAP: - PARTICLES THAT CAN BE SETTLED BY THEIR OWN WEIGHT WILL BE SETTLING IN THIS TANK. IN
THIS UNIT THE TREATMENT METHOD IS SETTLING THE PARTICLES BY THE MEANS OF GRAVITY’
• IN PST (PRIMARY SEDIMENTATION TANK):- A PARTICLES WHICH CANNOT SETTLE IN SAND TRAP WILL BE SETTLED
HERE BECAUSE THE SEWAGE WILL GET ENOUGH TIME TO STAGNANT IN THIS TANK IT TAKES 2-8 HRS.
.DECOMPOSITION WILL TAKE PLACE BY FILAMENTS BACTERIA (WITHOUT OXYGEN) THE DECOMPOSED FILAMENT
SOIL WILL BE REMOVED TO SLUDGE DRYING BED BY HYDROSTATIC FORCE.
• IN AERATION TANK: - BIODEGRADING MATTER WHICH IS ESCAPING FROM PST CAN BE DEGRADING BY E-COLI AND
COLIFORM BACTERIA. AN AERATOR AND MIXER CAN FACILITATE THE PROCESS BY SUPPLYING DISSOLVED OXYGEN
FOR E-COLI AND COLIFORM BACTERIA.

26. • IN SST (SECONDARY SEDIMENTATION TANK):- IT IS USED TO SETTLE DECOMPOSED AND DEGRADED MATTER AND
SEPARATE WATER FROM THE DECOMPOSED AND DEGRADED MATTER.
• IN DISINFECTION UNIT: - DISINFECT ESCAPING BACTERIA AND OTHER MICROORGANISMS WHICH CAN HAVE AN
ADVERSE EFFECT ON HUMAN AND ANIMALS AT DOWNSTREAM. SO IN THIS UNIT WE KILL BACTERIA’S OR WE CAN
DISTORT THE DNA (REPRODUCTIVE SYSTEM OF BACTERIA) B/C IF THEY ARE SHELLED BY OUTER MOST SHELL THEY
CANNOT BE DIE (ATTACKED) EASILY. IN THIS STAGE WE HAVE THREE KINDS OF TREATMENT THOSE ARE
• -CHEMICAL TREATMENT
• -UV SYSTEM TREATMENT (ULTRA VIOLET TREATMENT)
• -OZON TREATMENT

27. F. WHAT IS THE EFFICIENCY OF EACH TREATMENT UNIT?
• THE EFFICIENCY OF EACH TREATMENT PLANT UNIT IS DEPENDENT ON THE SITUATION AND CONDITION OF
THE SEWAGE BUT APPROXIMATELY IT IS UP TO 78-89% IT IS 78% WHEN IT IS HIGHLY CONCENTRATED
ESPECIALLY IN DRY SEASON AND IT IS 89% WHEN IT IS NOT CONCENTRATED (DILUTED) ESPECIALLY IN
SUMMER SEASON AND RAINY DAYS. BUT WHEN WE TALK ABOUT THE SCREENING IT IS 100% FUNCTIONAL
EXCEPT FOR THE DAYS WHEN IT IS MAL FUNCTIONED.
G. WHAT IS THE CHARACTERISTICS OF POLLUTANTS REMOVED IN EACH OPERATION
UNIT?
• THE CHARACTERISTICS OF POLLUTANTS IS COMMONLY THEY HAVE BAD SMELL, AND IN THE SAND TRAP
AND IN THE AERATION THEY FORM A BOBBLE LIKE STRUCTURES, AND IT HAVE AN ODOR LIKE TASTE OF
AMMONIA, IT HAVE GAS CHARACTERISTICS LIKE METHANE, HYDROGEN SULFIDE, CARBON MONO OXIDE,
CARBON DIOXIDE.

28. H. WHICH METHOD OF DISPOSAL HAS BEEN USED?
• THE METHOD OF DISPOSAL IN THE DMU STP IS IN THE FORM OF COMPOSITE OR IN SOLID FORM IT IS FERTILE SOIL
AND REACHES IN NITRATE SO IT IS USED FOR AGRICULTURAL PURPOSE. AND IT HAVE A QUALITY ASSURANCES THAT
STATES ABOUT IT’S NOT HARM FULL FOR THE ENVIRONMENT.
I. HOW SLUDGE IS MANAGED IN THE WWTP?
STEP 1 – SLUDGE THICKENING
STEP 2 – SLUDGE DIGESTION
STEP 3 – DEWATERING
STEP 4 – DISPOSAL

29. J. SHOW THE SLUDGE TREATMENT FLOW SHEET OF WWTP WITH ROUGH SKETCH.

30. RESULTS AND DISCUSSIONS
• DMU STP IS WORKING AS THE SAME WAY TO THAT OF THE STANDARD SEWAGE TREATMENT PLANT AND
WE ALSO NOTICE LITTLE DIFFERENCE BETWEEN THEM THE FIRST DIFFERENCE IS IN THE STANDARD
SEWAGE TREATMENT PLANT THERE IS A STANDARD USE OF MACHINERIES THAT ENABLE IT TO IMPROVE
ITS EFFICIENCY AND ALSO AVAILABILITY OF WATER ALSO ANOTHER FACTOR TO DETERMINE THE
EFFICIENCY OF A TREATMENT PLANT FOR EXAMPLE IF THERE IS ADEQUATE OR EFFICIENT USE OF WATER IT
MAKES THE TREATMENT PROCESS EASY AND EFFECTIVE, UNLESS IT MAY BE DIFFICULT TO TREAT THE
SEWAGES THAT COMES FROM DIFFERENT SOURCE.

31. RECOMMENDATIONS
• -THE WATER SUPPLY SHOULD BE EFFICIENT AND ADEQUATE IN ORDER TO GET EFFECTIVE AND EFFICIENT
TREATMENT PROCESS
• -THE CLEANING DAYS SHOULD BE PROGRAMED AND SCHEDULED UNLESS AND OTHERWISE IT IS HARM FULL FOR
THE HEALTH OF THE PEOPLES WHO WORKS IN THAT TREATMENT PLANT.
• -THE WORKER MUST TAKE CARE OF THEIR HEALTH BY WEARING DIFFERENT MATERIALS LIKE MASK AND
PROTECTIVE SHOES BECAUSE BEFORE DOING ANY WORKS SAFETY IS THE PRIOR THING.
• -WHEN THE VISITORS ARE COMING TO THE TREATMENT PLANT THEN THERE MUST BE ONE PERSON WHO IS
RESPONSIBLE TO ANSWER THE QUESTIONS AND ALSO TO GUIDE THE TREATMENT PLANT FOR THE VISITORS.

32. CONT.
• - STRENGTHEN THE FINANCIAL AND HUMAN RESOURCES DEVOTED TO REGIONAL ENVIRONMENTAL INSPECTION
TO SUPPORT PROGRESS IN COMPLIANCE WITH AND ENFORCEMENT OF ENVIRONMENTAL REGULATIONS.
• -CONTINUE TO STRENGTHEN IMPLEMENTATION OF INTEGRATED POLLUTION PREVENTION AND CONTROL
LICENSING MECHANISMS.
• - PROMOTE THE USE OF ECONOMIC INSTRUMENTS SUCH AS POLLUTION CHARGES FOR INDUSTRY AND
WITHDRAWAL CHARGES FOR AGRICULTURE.
• -THEY HAVE TO CREATE AWARENESS ABOUT THE SEWAGE DISPOSAL SO THAT EVERYONE CAN CORPORATE WITH
THEM IN ALL ACTIVITIES.

33. CONCLUSION
• WASTE WATER TREATMENT IS A HUGE FACTOR TO KEEP SOCIETY ALIVE. MOST PEOPLE MAY NOT HAVE KNOWN THE
SIGNIFICANCE OF HAVING SUCH TECHNOLOGY IN OUR SOCIETY. IN MAJOR CITIES, THERE ARE DOZENS OF
WASTEWATER TREATMENT PLANT, AND THERE ARE MANY WASTEWATER CONTRACTORS THAT OFFER SERVICES.
NOT ONLY GOVERNMENT-ISSUED CONTRACTORS, BUT THERE ARE ALSO NOW PRIVATE CONTRACTORS THAT ARE
READY TO KEEP YOUR WATER SAFE.
• WASTE WATER TREATMENT IS A MUST FOR COMPANIES THAT ARE RUNNING A FACTORY. WHETHER IT IS BIG OR
SMALL, THERE ARE CHOICES OF WATER PLANTS TO CHOOSE FROM. SUCH AS EFFLUENT WATER PLANTS AND SEMI
EFFLUENT WATER PLANTS. SO MAKE SURE THAT YOU ARE AWARE OF THE DANGER WATER CAN DO TO YOUR HEALTH
AND DAILY LIFE.