- Introduction
- Rest time! Have fun
- Physics
- Chemistry
- BIOLOGY
- Reaching the age of Adolescence
- CROP PRODUCTION AND MANAGMENT
- Cells : The basic structural unit of life
- Nutrition in human beigns
- RESPIRATION IN HUMAN BEIGNS
- TRANSPORTATION IN HUMAN BEIGNS
- excretory system in human beigns
- NERVOUS SYSTEM
- PHOTOSYNTHESIS
- Respiration in plants
- REPRODUCTION IN PLANTS
- MOVEMENTS IN PLANTS
- Forest our lifeline
- WASTE WATER STORY
- WEATHER,CLIMATE AND ITS ADAPTATION .
- Reaching the age of Adolescence
- Model tests
- Animation time
SEWAGE
SEWERS
WASTE WATER STORY
WASTE WATER
THE TERM WASTE WATER MEANS POLLUTED WATER .
SOURCES OF WASTE WATER
1. MUNICIPAL WASTE -
THE WASTE WATER FROM HOUSE ,OFFICE,ETC ARE CALLED AS MUNICIPAL WASTE .
2. INDUSTRIAL WASTE -
THE WASTE WATER FROM INDUSTRIES IS CALLED AS INDUSTRIAL WASTE WATER .
3. RAIN WATER -
IN URBAN AREA RAIN WATER FLOWS INTO RAINWATER DRAIN CREATING WASTE .
SEWAGE
SEWAGE IS WASTE WATER REALISED BY HOMES,INDUSTRIES , OFFICES, ETC.
IT CONTAINS CONTAINMENTS .
SEWERS
THE PIPE WHICH CARRY SEWAGE IS CALLED SEWER .
WASTE WATER TREATMENT
STEP 1 - SEWAGE IS CARRIED BY SEWERS TO A SEWAGE TREATMENT PLANT .
STEP2 - THE LARGE SOLIDS ARE REMOVED BY BARSCREENS .
STEP 3 - THEN THE SEWAGE MAY PASS THROUGH SETTLEMENT TANKS WHER THE SOLIDS SETTLE DOWN i.e. SLUDGE CAN BE USED TO PRODUCE COMPOST .
STEP 4 - AIR IS BLOWN IN TANKS FOR GROWTH OF AEROBIC BACTERIAS FOR BREAKING DOWN ORGANIC MATTER .
STEP 5 - NOW THE WATER IS TREATED WITH OZONE AND CHLORINE .
THE TERM WASTE WATER MEANS POLLUTED WATER .
SOURCES OF WASTE WATER
1. MUNICIPAL WASTE -
THE WASTE WATER FROM HOUSE ,OFFICE,ETC ARE CALLED AS MUNICIPAL WASTE .
2. INDUSTRIAL WASTE -
THE WASTE WATER FROM INDUSTRIES IS CALLED AS INDUSTRIAL WASTE WATER .
3. RAIN WATER -
IN URBAN AREA RAIN WATER FLOWS INTO RAINWATER DRAIN CREATING WASTE .
SEWAGE
SEWAGE IS WASTE WATER REALISED BY HOMES,INDUSTRIES , OFFICES, ETC.
IT CONTAINS CONTAINMENTS .
SEWERS
THE PIPE WHICH CARRY SEWAGE IS CALLED SEWER .
WASTE WATER TREATMENT
STEP 1 - SEWAGE IS CARRIED BY SEWERS TO A SEWAGE TREATMENT PLANT .
STEP2 - THE LARGE SOLIDS ARE REMOVED BY BARSCREENS .
STEP 3 - THEN THE SEWAGE MAY PASS THROUGH SETTLEMENT TANKS WHER THE SOLIDS SETTLE DOWN i.e. SLUDGE CAN BE USED TO PRODUCE COMPOST .
STEP 4 - AIR IS BLOWN IN TANKS FOR GROWTH OF AEROBIC BACTERIAS FOR BREAKING DOWN ORGANIC MATTER .
STEP 5 - NOW THE WATER IS TREATED WITH OZONE AND CHLORINE .