What is disinfection? Explain in detail the conventional water treatment plant
Disinfection is used extensively in the water industry and petrochemical/chemistry/environmental industry and the below definition is related to that field.
Disinfection is a The process of killing (inactivating) harmful and objectionable bacteria, cysts and other microorganisms (pathogenic) by various agents such as chemicals, heat, ultraviolet light, ultrasonic waves, or radiation. Disinfection is usually considered a 99+% kill compared to sterilization that generally attains 100% kill.
Conventional treatment consists of the following unit processes: coagulation, flocculation, clarification, and filtration, and is typically followed by disinfection at full-scale. Figure 1 describes conventional treatment. Conventional treatment is often preceded by pre-sedimentation, may be accompanied by powdered activated carbon (PAC) addition, utilize granular activated carbon (GAC) as a filter media, and in some cases be followed by GAC adsorption. Conventional treatment is often preceded by pre-oxidation, or oxidation takes place concurrently. Oxidants common to conventional treatment are chlorine, chloramine, chlorine dioxide or permanganate. Occasionally membrane processes, either membrane filtration or ultrafiltration, accompany conventional treatment.
In coagulation, a positively charged coagulant (usually an aluminum or iron salt) is added to raw water and
_______ __________ _________ _________ _________.
_________ _____ __________ _______ ________ _________ _______ ______.
____ ___ _________ _________ _____ _________ _____.
______ ___ _____ ____ _______ __________ ____.
__________ _____ _________ ______ __________ _______.
____ ________ ______ __________ __________ ________ _________ ____ _______ ____ ____ _______.
___ _______ ______ ________ _______ ____ __________ __________ ___ _________.
_________ __________ _____ ______ _________ _____ ______ ___ ______ ______ _________ ______.
_____ ___ ___ ______ ____ _____ ____ _______ ________ ______ ______.
________ ________ _______ _________ _________ ___ ________ ________ ___.
____ _____ __________ ____ ______ _______ _________ ___ ___ ______.
_____ ____ __________ __________ _______ _____ __________.
_________ ________ ___ _________ ________ _________ __________ __________ _____ _______ _________ _________.
____ ___ ______ _________ ________ ____ _________ ______ _________ ___.
__________ _________ _______ _________ _________ _________ _______ ___.
___ ____ _________ _________ __________ _________.
______ ________ _________ ________ ___ ________ ________ ________ _________ ______ __________ ____.
_________ _______ ______ _______ ________.
________ ________ __________ ________ ________ ____ ______ _______ ___ _______.
______ ___ __________ _______ ____ _____ ________ _________ _____ ___ ______.
__________ ________ _____ _______ ______ _________ _____ ____ _______ _______.
_________ ________ ______ ____ _____.
___ ______ ________ ______ ________ _______.
_________ ____ ___ ___ ______ ______ ________ __________.
________ __________ _______ _______ __________ __________ _________.
_______ ___ ______ ____ _________ ____ _________ ____ ______.
_____ _____ _______ ____ _________ ___.
________ _________ ______ __________ _____ ________ _____.
______ __________ _____ ____ ____ ____ _______.
____ _________ ____ ______ ________ _____ ______ ________ ____ ___ ______ ___.
___ ___ __________ __________ _________ _________ ________ ______ __________ _______ _________ ____.
__________ _______ _________ _______ _______ _______ _______ ___ _________ ________.
_________ _______ ______ _____ ___ ______ _______ ___ ______ _____.
___ _____ _____ _______ ______ _________ ____ _______ _______ ________ ___ ________.
__________ _________ ________ ________ _____ _____ _____ ___.
______ __________ ___ ___ ________ _____ ___.
__________ ________ ________ ________ ___ _____ ____ ____.
_______ _________ _____ ___ _____ ___.
__________ ________ ____ __________ __________ ____ ________ ___ ________ _____ ______.
_______ __________ _______ ________ __________ _________ ____ ________ ____ _____ __________ _______.
_______ _________.
- Solved Assignments
- Study Notes
- Guess Papers
- Question Papers
✓ Unlock up to 60% of the answer
✓ No payment required