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Explain the Typical Wastewater Characteristics?
Total Suspended Solids = 100 - 350 mg/L (200 mg/l is the typical value)
BOD5 = 100-300 mg/L (200 mg/L is the typical value)
33% of the total solids (ST) are suspended (60% of these suspended solids are settle able and 40% are colloidal) and 67% are dissolved.
Total Solids (ST) = Fixed or Inorganic Solids (SF or SI) + Organic or Volatile Solids (SV or SO)
The solids removed during primary and secondary treatment are referred to as sludge (high solids concentration).
Features of a Stratigraphical Survey phase The principal features of a Stratigraphical Survey phase are: a) Determination of depth of ground water, thickness, extent and ap
Determine the quantity of materials required per batch and probable output from a concrete mixing plant of 1200lts capacity. The design per 1000lts of mixed concrete is as follows
Q. Explain about Bentonite slurry and polymeric slurry? For the construction of diaphragm walls, bentonite slurry is generally used to form a filter cake on walls of trenches t
Absolute pressure is simply the addition of the observed gage pressure plus the value of the local atmospheric pressure.
Crack width limitation ( In many standards and code of practice of numerous countries, allowable size of crack width is generally limited to less than 0.5mm for reinforced conc
Define Electrical tool for underwater inspection of bridge? Electrical equipment like Rebar Scanner for scanning of rebars; underwater sonic and ultrasonic equipment for observ
A soft, normally consolidated clay layer is 18 m thick. The natural water content is 45%. The saturated unit weight is 18 kN/m 3 ; the grain specific gravity is 2.70 and the liqui
Calculate the Benefit-Cost Analysis Ratio A city engineer is deciding which of two alternatives to select. If the interest rate is 10% per year, the Benefit-Cost analysis rat
Uses of Bricks In the following civil works Bricks are used: a. in building blocks. b. For lining of ovens, chimneys and furnaces. c. As aggregates in providing water
State the Needs for high strength steel and concrete In prestressed concrete construction, tendons have 3 small area of cross-section compared to the cross-sectional area
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