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The common methods used for disinfection in waste water treatment plants are
UV light and ozone work well to disinfect water in the treatment plant, but these disinfection methods do not continue killing germs as water travels through the pipes between the treatment plant and your tap.
UV light and ozone work well to disinfect water in the treatment plant, but these disinfection methods do not continue killing germs as water travels through the pipes between the treatment plant and your tap.
See lessSanitizer used specifically for vitreous enamel are
weak alkali with sodium silicate
weak alkali with sodium silicate
See lessWhich of the following physical method is used as germicidal in modern time for the treatment of drinking water?
UV radiation is used as germicidal in modern times for the treatment of drinking water.
UV radiation is used as germicidal in modern times for the treatment of drinking water.
See lessWhich of the following chemical is sometime added in the process of coagulation and flocculation?
Aluminum sulfate, ferric sulfate, and Ferric chloride are some chemicals (coagulants) used in process of coagulation.
Aluminum sulfate, ferric sulfate, and Ferric chloride are some chemicals (coagulants) used in process of coagulation.
See lessAcid used mostly for removal of milk stone is
Detailed Solution The correct answer is Acid. Nitric acid is the most commonly used wash for scale removal and pH stabilization.
Detailed Solution
See lessThe correct answer is Acid. Nitric acid is the most commonly used wash for scale removal and pH stabilization.
According to BIS the maximum permissible limit of dissolved solids in drinking water is
According to the Bureau of Indian Standards (BIS), the permissible limit for TDS in drinking water is 500 mg/L. However, the World Health Organization recommends a TDS level of less than 300 mg/L for drinking water. Minimum TDS of drinking water should not go below 50 ppm.
According to the Bureau of Indian Standards (BIS), the permissible limit for TDS in drinking water is 500 mg/L. However, the World Health Organization recommends a TDS level of less than 300 mg/L for drinking water. Minimum TDS of drinking water should not go below 50 ppm.
See lessPermanent hardness of water is caused by the presence of
Permanent hardness in water is hardness due to the presence of the chlorides, nitrates and sulphates of calcium and magnesium, which will not be precipitated by boiling. The lime scale can build up on the inside of the pipe restricting the flow of water or causing a blockage.
Permanent hardness in water is hardness due to the presence of the chlorides, nitrates and sulphates of calcium and magnesium, which will not be precipitated by boiling. The lime scale can build up on the inside of the pipe restricting the flow of water or causing a blockage.
See lessApplication of quaternary ammonium compounds as sanitizing agents tends to
The quaternary ammonium compounds (QUATS) are bactericidal, mostly against the Gram-positive microorganisms. They are shown to amoebicidal, fungicidal, and virucidal (particularly against enveloped viruses) but not sporicidal and show no cidal effect on Mycobacterium tuberculosis.
The quaternary ammonium compounds (QUATS) are bactericidal, mostly against the Gram-positive microorganisms. They are shown to amoebicidal, fungicidal, and virucidal (particularly against enveloped viruses) but not sporicidal and show no cidal effect on Mycobacterium tuberculosis.
See lessSecondary treatment uses __________ to consume wastes.
Secondary treatment removes the dissolved organic matter by the use of biological agents and hence, known as biological treatment. This is achieved by microbes which can consume and degrade the organic matter converting it to carbon dioxide, water, and energy for their own growth and reproduction.
Secondary treatment removes the dissolved organic matter by the use of biological agents and hence, known as biological treatment. This is achieved by microbes which can consume and degrade the organic matter converting it to carbon dioxide, water, and energy for their own growth and reproduction.
See lessTemporary hardness of water is caused by the presence of
The temporary hardness of water is due to the presence of bicarbonates of Ca and Mg, i.e., calcium bicarbonate (CaHCO3), magnesium bicarbonate (MgHCO3). This temporary hardness can be removed by boiling and Clark's method.
The temporary hardness of water is due to the presence of bicarbonates of Ca and Mg, i.e., calcium bicarbonate (CaHCO3), magnesium bicarbonate (MgHCO3). This temporary hardness can be removed by boiling and Clark’s method.
See less