Question:
Which is the effective pH range for aluminum sulfate as coagulant in water treatment?
Which is the effective pH range for aluminum sulfate as coagulant in water treatment?
Show Hint
Always ensure the pH is in the effective range for coagulants to function optimally. The proper pH improves the coagulation process significantly.
Updated On: May 3, 2025
- 8.5 and above
- 3.5 to 6.5 and above 8.5
- 4 to 7 and above 9
- 6.5 to 8.0
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
The effective pH range for aluminum sulfate as a coagulant in water treatment is 8.5 and above. At pH values below 8.5, aluminum sulfate may not be effective, and the coagulation process may not proceed efficiently.
Was this answer helpful?
0
0
Top Questions on Hydrology
- Water from a hand pump located near a landfill has 1 mg/L arsenic (oral carcinogenic potency factor = 1.75 (kg-day)/mg). A person who lives nearby drinks 2 L/day of water from this hand pump for 10 years. Assume a body weight of 70 kg and an average life duration of 70 years. The chances of this person getting an excess risk of cancer is ________ × 10-3 (rounded off to three decimal places).
Length of the streets, in km, are shown on the network. The minimum distance travelled by the sweeping machine for completing the job of sweeping all the streets is ________ km. (rounded off to nearest integer)
- An incandescent light bulb operated for two hours per day uses 12.2 kWh of energy per month. Burning of one kg of coal generates 2 kWh of electrical energy and releases 7 g of PM10. The reduction in PM10 emitted per month, if this incandescent bulb is replaced with a light emitting diode (LED) bulb which consumes 1/6th of energy, is ________ g (rounded off to one decimal place).
A particle dispersoid has 1510 spherical particles of uniform density. An air purifier is proposed to be used to remove these particles. The diameter-specific number of particles in the dispersoid, along with the number removal efficiency of the proposed purifier is shown in the following table:
The overall mass removal efficiency of the proposed purifier is ________% (rounded off to one decimal place).- A circular sewer pipe, having Manning’s coefficient (n) of 0.01, is laid at a bed slope of 1:100. If it is flowing 80% full for a discharge of 2 m\(^3\)/s, then its diameter is ________ m. (rounded off to three decimal places)
View More Questions
Questions Asked in AP PGECET exam
- Given \( x_0 \neq 0 \), the iteration \[ x_{n+1} = \frac{1}{2} \left( -\frac{9}{x_n} + x_n \right), n \geq 0 { is a} \]
- AP PGECET - 2025
- Numerical Methods
- Suppose \( \sum_{n=1}^{\infty} a_n (x - 2)^n \) is convergent at \( x = -5 \), then it need not be convergent on which interval?
- AP PGECET - 2025
- Convergence tests
- The set of all critical points of the function \( f(x) = |x^2 - 1| \) on \( [-2, 2] \) is ...........
- AP PGECET - 2025
- Calculus
The surface integral \( \int_S x^2 \, dS \) over the upper hemisphere
\[ z = \sqrt{1 - x^2 - y^2} \]
with radius 1 is ..........- AP PGECET - 2025
- Calculus
- Consider the system of equations:
\[ x + 2y - z = 3 \\ 2x + 4y - 2z = 7 \\ 3x + 6y - 3z = 9 \]
Which of the following statements is true about the system?
- AP PGECET - 2025
- Linear Algebra
View More Questions