How to select the proper method of drainage for groundwater?
The source of the groundwater and its flow characteristics must be determined to select the proper method of drainage. Particular attention must be given to soil strati- fication and groundwater gradients. 260
Which component should be selected first in a wastewater treatment project?
Since the site char acteristics constrain the method of disposal more than other components-, the disposal component must be selected first. Selection of wastewater modification and treatment components foll ow.
How to select the wastewater disposal method?
Selection of wastewater modification and treatment components foll ow. To select the disposal method properly, a detai 1ed site eval uati on is required. However, the site characteristics that must be evaluated may vary with the disposal method. Since it is not economical nor practical to evaluate a site for
What are the requirements of a wastewater treatment system?
The system must be designed to insure uniform distribution of wastewater throughout the filter cross-section. Sufficient resting must also be provided between dosages to obtain aerobic conditions. In small filters, wastewater is applied in doses large enough to entirely flood the filter surface with at least 3 in. (8
How do you calculate the capacity of a sewage treatment plant?
Multiply your Minimum Population (P) by 150 to get your daily estimated wastewater production. For example, a three bed house with a Minimum Population (P) of 5 people would have a daily estimated wastewater production of 750 litres per day (5 x 150).
What are the parameters of sewage treatment plant?
This article discusses the treated parameters in the Sewage treatment plant (STP)....ParameterRequired StandardspH6.5-8.5Suspended Solids<10mg/lAmmonia Nitrogen<5mg/lFecal Coliform<100 MPN/100ml2 more rows
What are the factors to be considered while selecting the site for the water treatment plant?
Most recent answerAt a distance from the place which people live.Large enough at the future.the source of water and the best location at deep point far from the soil.study the degree of contamination at the point.
Which parameter is most important in wastewater treatment?
One of the most important parameters to assess water quality based on organic impurities is the Biochemical Oxygen Demand (BOD). The BOD value has played an important role in the treatment and purification of wastewater since the 19th century.
What is COD BOD ratio?
The ratio COD/BOD is defined as the portion of biodegradable organics compared to total (bio + non bio) degradable organics. This ratio is generally greater than 1, but can be equal to 1 if sample has only biodegradable organics.
What is the acceptable value for COD?
250 mg/lAccording to standards of Central Pollution Control Board, permissible value of BOD is 30 mg/l and COD is 250 mg/l.
What are the major considerations in selecting the appropriate water treatment process?
7.2. Factors Influencing Process SelectionContaminant Removal. Contaminant removal is the principal purpose of treatment for many source waters, particularly surface waters. ... Source Water Quality. ... Reliability. ... Existing Conditions. ... Process Flexibility. ... Utility Capabilities. ... Costs. ... Environmental Compatibility.More items...
What are the factors to consider in designing a sewage and wastewater treatment plant?
Some of the factors which should be taken into consideration in this evaluation include:Locations of drinking water sources, surface water intakes and groundwater wells;Adequacy of isolation from residential areas and land use surrounding plant site;Prevailing wind directions;Susceptibility of site to flooding;More items...
What are three critical things you would need to consider when designing a water treatment facility?
Major factors to be considered are: (1) type of the water source, (2) desired finished water quality, (3) skill of facility operators, and (4) the relative size of available funds.
What are the 3 characteristics of wastewater?
Turbidity.Color.Odor.Total solids.Temperature.
What is waste water parameters according to who?
Wastewater ParameterSeptage, mg/LRelative Strength Ratio (Septage : Sewage)5 – day BOD6,50030 : 1Chemical Oxygen Demand32,00065 : 1Total Suspended Solids13,00060 : 1Total Kjeldahl Nitrogen60015 : 115 more rows
What is effluent standards and what are the parameters use in testing wastewater flow?
Effluent standards are limits in terms of concentration and/or volume that any wastewater discharge coming from a point source i.e. industrial plants and municipal sewerage systems shall meet. These consist of a set of water quality parameters and their corresponding numerical limits.
What is BOD and How Is It measured?
Biochemical oxygen demand, or BOD, measures the amount of oxygen consumed by microorganisms in decomposing organic matter in stream water. BOD also...
What is the BOD of treated sewage?
The Significance of BOD in Wastewater Treatment BOD is listed as a conventional pollutant under the U.S. Clean Water Act. Typical maximum values ra...
What is BOD treatment?
Biological Oxygen Demand (BOD) is a chemical procedure for determining the amount of dissolved oxygen needed by aerobic biological organisms “bio-b...
What is BOD and COD in sewage treatment plant?
The biochemical oxygen demand (BOD) represents the amount of dissolved oxygen (DO) consumed by biological organisms when they decompose organic mat...