Treatment plant - sewer construction, Civil Engineering

Treatment plant - sewer construction:

Problem:

How many kg of primary and secondary dry solids needs to be processed daily from the treatment plant?

Solution

An amount of solids processed from the basic sedimentation tanks equals the variance in suspended solids concentrations measured across the sedimentation tanks multiplied by the plant flow rate. Thus,

33.75 × 106 l/day (200 mg SS/l - 100 mg SS/l) × kg/1,000,000 mg = 3375 kg primary solids per day.

We are not provided with the concentration difference of suspended solids across the secondary sedimentation tanks so we can determine the amount of secondary solids produced daily in the same manner that we used for primary solids. Therefore, careful examination of the expression of solids retention time displays in which the term Qw Xw could be estimated as the following:

4 days = V =X/Qw×Xw = 5,000,000 l (4,300 mg SS/l)/Qw × Xw

Solve for Qw Xw which equals 5375 kg or say 5400 kg secondary dry solids per day.

Posted Date: 1/22/2013 6:33:01 AM | Location : United States







Related Discussions:- Treatment plant - sewer construction, Assignment Help, Ask Question on Treatment plant - sewer construction, Get Answer, Expert's Help, Treatment plant - sewer construction Discussions

Write discussion on Treatment plant - sewer construction
Your posts are moderated
Related Questions
Effect of prestress in an reinforced cantilever beam The effect of prestress in an ordinary reinforced cantilever beam and a prestressed concrete (PSC) beam. When no load is pr

In a specific gravity test, 1.17 N of oven-dired soil was taken. The weight of pyknometer, soil and water was obtained as 6.51 N. The weight of pyknometer full of water alone was 5

Define Steel substructure - underwater inspection of bridge? Steel is used as a structural material and as external protective cladding on concrete foundation elements. Steel f

Q. What do you mean by Manhole loss? Manholes are provided in locations where there are changes in direction, size and gradient of gravity pipelines. Generally practice for str

design a tension member subjected to a pull of 300KN using a channel section. the length of a joint available is only 400mm.check the condition of using lug angle for end connecti

Q. How to design Shape of guide bunds? Alignment of guide bunds converging on the upstream was considered by Bell, Spring and Gales to allow for the waterway obstructed by pier

scale and sludge formation in boilears

Question What are major considerations in selecting marine plants and land plants for fitting of band drains? Answer For fitting of band drains by marine plants,

Atomic weight of an atom is equal to? Answer: sum of the number of protons and neutrons.

Two load tests were performed at a site-one with a 50 cm square plate and the other with a 75 cm square plate. For a settlement of 15 mm, the loads were recorded as 50 kN and 90 kN