Which of the following are the solid residues from incineration?
1.Slag, fly ash, APC
2.Klink, ash, BPC
3.Gas, slag, APC
4.Liquids, ash, slag
Posted Date:-2022-05-12 09:30:36
Anaerobic digestion is generally applied to BOD wastes above ________ ppm.
1.3000
2.6000
3. 9000
4.12000
Posted Date:-2022-05-12 09:52:21
Anaerobic treatment is mediated through _______
1.Enzyme catalysis
2.Enzyme
3.Chemical
4.Sulphur
Posted Date:-2022-05-12 09:53:34
Bio filters are fed with effluent only after ____________
1.Initial settlement
2.Bio-accumulation
3.Bio-degradation
4.Bio-magnification
Posted Date:-2022-05-12 09:59:31
Chemical precipitation is used in conjunction with neutralisation.
1.True
2.False
Posted Date:-2022-05-12 09:37:14
Chemical precipitation makes the hazardous waste _________
1.Soluble
2.Insoluble
3. Volatile
4.Acidic
Posted Date:-2022-05-12 09:32:40
Chemical precipitation treatment is effective in wastewater containing _______
1.Chemicals
2.Chloride
3.Toxic metals
4.Impurities
Posted Date:-2022-05-12 09:37:57
Chemical precipitation treatment is user economic.
1.True
2.False
Posted Date:-2022-05-12 09:40:25
Compensation for lower temperatures can be achieved by reducing hydraulic and organic loading rates thereby increasing _____________
1.Retention time
2.Mixing
3.Aeration
4.Sparging
Posted Date:-2022-05-12 10:00:06
Effective preliminary treatment can also be used to remove the ____
1.Girt and rag
2.Carbon dioxide
3.Nutrients
4.Oxygen
Posted Date:-2022-05-12 10:00:50
Evaporation of liquids from hazardous waste through multiple evaporator, distillation etc. is dependent on ________
1.Melting point
2.Freezing point
3.Boiling point
4.Vapour pressure
Posted Date:-2022-05-12 08:45:59
Evaporation units may be operated without obtaining a permit if ________
1.Chemicals are used
2.Resins are associated
3.Unit is enclosed
4.Waste is reused
Posted Date:-2022-05-12 08:49:55
Evaporator must have sufficient disc engaging space to achieve ________
1.Separation
2.Chemicals
3.Boiling
4.Pressure
Posted Date:-2022-05-12 08:47:50
Ferrous materials are combustible.
1.True
2.False
Posted Date:-2022-05-12 09:27:15
In the exposed lands, ______ are used to assist rotation during harsh weather conditions?
1.Wind vanes
2.Water sprayer
3.Flow bed
4.Motor drives
Posted Date:-2022-05-12 09:58:16
Ion exchange is an irreversible process.
1.True
2.False
Posted Date:-2022-05-12 09:43:17
Ion exchange is widely used to remove _________
1.Heavy metals
2.Toxic heavy metals
3.Minerals
4.Salts
Posted Date:-2022-05-12 09:42:42
Mechanical mixing of waste ensures ________
1.Flash point
2.Even distribution
3.Hydrocarbon mixing
4.Less water requirement
Posted Date:-2022-05-12 09:30:00
Most suitable treatment method for electroplating discharge is ____________
1.Reduction process
2.Ion exchange
3.Waste analysis
4.Chemical analysis
Posted Date:-2022-05-12 09:45:08
Non-methanogenic and methane-producing organisms effect anaerobic treatment.
1.True
2.False
Posted Date:-2022-05-12 09:48:37
Organic gas from condensation can be used as fuel.
1.True
2.False
Posted Date:-2022-05-12 09:46:31
Precipitation by ___________ is widely used method for treating hazardous waste.
1.Calcium hydroxide
2.Sodium hydroxide
3.Potassium hydroxide
4.Lead oxide
Posted Date:-2022-05-12 09:36:53
Residence time of waste in combustion zone is ________ seconds.
1.1
2.2
3.3
4.4
Posted Date:-2022-05-12 09:27:51
Resins can remove specific substances in a waste solution.
1.True
2.False
Posted Date:-2022-05-12 09:43:52
Sodium and potassium ions cause strong inhibition above ________ ppm.
1.10
2.100
3.1000
4.10000
Posted Date:-2022-05-12 09:51:38
Soluble ions of heavy metals are toxic above _______ ppm in industrial waste.
1.1
2.2
3.3
4.4
Posted Date:-2022-05-12 09:50:44
Steel tubes used in multiple effect evaporator are placed on surface.
1.True
2. False
Posted Date:-2022-05-12 08:46:28
The environmental issue caused by chemical precipitation is _________
1.Chemical silt
2.Salts
3.Liquid matter
4.Degradation
Posted Date:-2022-05-12 09:41:12
The gases produced from anaerobic degradation process are ________ and ________
1.Nitrogen, sulphur
2.Acetate, nitrate
3.Carbon, methane
4.Methane, sulphur
Posted Date:-2022-05-12 09:48:05
The residues produced from evaporation treatment is _________
1.Less
2.More
3.Undetermined
4. No residue
Posted Date:-2022-05-12 08:44:38
The temperature range for anaerobic process is ________ and ______ degree Celsius.
1.10-20, 20-30
2.32-37, 40-55
3.10-40, 40-55
4.10-50, 20-47
Posted Date:-2022-05-12 09:49:16
The treatability of the hazardous waste depends upon ________ content.
1.Carbon
2.Hydrocarbon
3.Nitrate
4.Sulphur
Posted Date:-2022-05-12 09:55:24
Thermal processing reduces hazard from waste.
1.True
2.False
Posted Date:-2022-05-12 09:22:06
Thermal treatment technologies are differentiated by ___________
1.Type of grate
2.Chemicals
3.Energy
4.Temperature
Posted Date:-2022-05-12 08:50:42
What is the emission limit for dioxins as per European Union?
1.0.1
2.0.2
3.0.3
4.0.4
Posted Date:-2022-05-12 09:31:10
Which of the following gas is toxic to methanogenic bacteria?
1.Carbon
2.Sulphur
3.Nitrogen
4. Oxygen
Posted Date:-2022-05-12 09:49:58
Which of the following is another name given to conventional bio filters?
1.Percolating filter
2.Filter cake
3.Injection recovery
4.Bio-luminescence
Posted Date:-2022-05-12 09:57:19
Which of the following is possible from ion exchange treatment?
1.Metal recovery
2.Oxidation reduction
3.Waste analysis
4.Chemical analysis
Posted Date:-2022-05-12 09:44:29
Which of the following is the end product of anaerobic degradation?
1.Liquor
2.Nitrogen
3.Lead
4.Sulphur
Posted Date:-2022-05-12 09:47:19
Which of the following parameters effect operating conditions of anaerobic treatment process?
1.Influent quality
2.Chemicals
3.Hydrocarbon
4. Sulphur
Posted Date:-2022-05-12 09:56:07
Which of the following resin can be used to remove copper plating rinse water?
1.ResinTech’s CG-8 (Na)
2.ResinTech’s CG-8 (K)
3.ResinTech’s CP-8 (Na)
4.ResinTech’s PG-8 (Na)
Posted Date:-2022-05-12 09:46:02
Which of the following waste characteristic is considered for combustion?
1.Flash point
2.Energy point
3.Burning point
4.Melting point
Posted Date:-2022-05-12 09:29:13
Which of the following waste is not applicable for evaporation?
1.Calcium
2.Iron
3.Copper
4.Methylene chloride
Posted Date:-2022-05-12 08:48:30
_______ is used for precipitation of heavy metals.
1.Calcium hydroxide
2.Lime
3.Potassium hydroxide
4. Lead oxide
Posted Date:-2022-05-12 09:39:38
_______ treatment is suitable for metal salts bearing wastes.
1.Neutralisation
2.Chemical precipitation
3.Hydrolysis
4.Solvent extraction
Posted Date:-2022-05-12 09:38:54
________ % of waste by weight remains after combustion.
1.20-35
2.20-40
3.40-50
4.30-50
Posted Date:-2022-05-12 09:25:15
________ emission is cited as an issue from incineration?
1.Carbon
2.Dioxin
3.Sulphur
4.Nitrogen
Posted Date:-2022-05-12 08:51:58
________ of hazardous waste plays a major role in designing combustion unit.
1.Calorific value
2.Chemical value
3.Energy value
4.Fuel value
Posted Date:-2022-05-12 09:28:37
_________ wastes can be treated in evaporator.
1.Aqueous inorganic
2.Organic
3.Aqueous organic
4.Dry
Posted Date:-2022-05-12 08:49:18
__________ from combustion of waste reduces cost.
1.Chemical analysis
2.Metals
3.Material recovery
4.LCA
Posted Date:-2022-05-12 08:51:23