A septic tank of 7 m³ in volume serves for 5 accumulation of sludge is people. If the rate of 70 litres per capita per year and sludge is removed when it occupies 50% of its volume, what is the cleaning interval of septic tank?

A septic tank of 7 m³ in volume serves for 5 accumulation of sludge is people. If the rate of 70 litres per capita per year and sludge is removed when it occupies 50% of its volume, what is the cleaning interval of septic tank?

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter6: Biological Processes

Section: Chapter Questions

Problem 6.2P

See similar textbooks

Related questions

Q: Well Hydraulics A circular dug well in fine sand region has a yield of 15 l/s under a depression…

A: A circular dug well in fine sand region- Yield Q=15 l/s Depression head S=4 m, Specific capacity per…

Q: The equation of motion of a particle on a straight path is S = t³ - 3t, where s is displacement in…

A: Given;The equation of motion of a particle on a straight path is S=t3where 'S' is displacement.t = 3…

Q: Situation 9 - A tubular post is hit by a car at point B as shown. The post is fixed to the ground at…

A: Cross section of the post= 300mm x 300mm , Thickness of the post = 12mm , Force from the car, P =…

Q: An eight-lane freeway section is designed to have a lane width of 12 ft, right-side shoulder width…

A: Given; Lane width = 12 ft. Right-side shoulder width = 3 ft. and 3 ramps over a 2- mile- long…

Q: Solve the frame USING: Portal Method

Q: The 50-mm-diameter solid shaft is subjected to the distributed and concentrated torsional loadings…

A: Diameter of solid shaft = 50 mm

Q: Q3 Analyze the structure shown in Figure (3), using Slope-Deflection Method, (support d settles by 1…

A: As per the honor code, the first problem will be solved. Fixed end moment: Span ab:…

Q: A rectangular channel having a bed slope of 0.0001, width 3.0 m and Manning's coefficient 'n' 0.015,…

Q: Use the " Double Integration Method" Calculate the maximum deflection if El = 400 000 kNm^2 Note:…

A: Given: Required : Maximum deflection

Q: You are asked to design a horizontal curve for a four-lane road. The road has 12-ft lanes. Due to…

A: The width of the lanes = 12 ftThe number of lanes in the road = 2 lanesThe maximum clearance from…

Q: Prove that = (1-n) (1 + wc) GsYw

A: Given : A relation between Bulk Unit Weight; Water content; Specific gravity; Unit weight of…

Q: -1: Find Reactions and pin force 6' A Homework 7: 20' 12k 2: Find Reactions and pin force 2' 5' 10'…

A: To find reaction and pin force

Q: 1. For a constant head laboratory permeability test on a fine sand, the following values are given:…

Q: A rectangular foundation 6 x 3m carries a uniform pressure of 300 kN/m2 near the surface of a soil…

Q: A rectangular foundation of plan size 5 (B) × 10 (L) m is to be designed to carry a load of 86.6 MN…

A: Width of the footing, B = 5m , Length of footing , L = 10m , Dry Unit Weight,γdry=20kN/m3 Saturated…

Q: Anania is an apprentice with H&M Constructions and has been working under the supervision of Mari,…

A: In the given scenario, there are potential arguments to be considered regarding the…

Q: Using FACTOR METHOD, solve the Moment for all members on the frame provided. Consider the following…

Q: A dry sand is placed in a container having a volume of 0.0089 cm³. The dry weight of the sample is…

A: volume = 0.0089 cm3. The dry weight of the sample = 0.011 gramsthe combined weight of the soil plus…

Q: ← OMC-Proctor's Test Void ratio at the densest and loosest state of a sand are 0.30 and 0.68…

A: Void ratio-Relative compaction=?

Q: The load on each axle of a locomotive is 22 tonnes. If the coefficient of friction is 0.2, then the…

Q: Find the deflection equation of the beam of length 1, with distributed uniform load w(x) = w0…

A: Find the deflection equation of the beam

Q: soil with a volume of 163cm^3 is sampled from a field. It weighs 221g. Then, the sample was…

Q: Slender column with two fixed ends. Find the Euler formulae (critical load), M Where =I dx² ΕΙ

A: Let the Euler's crippling Load be P. We have a column which is slender and fixed at both the ends.…

Q: If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic…

Q: An extended aeration tank receives a BOD load of 768 kg/day. If two fixed aerators with oxygen…

Q: etermine the value of 0 (in degrees), in the figure shown, o that the moment of the 10-kN force…

Q: A 2-span beam is loaded as shown. Assumed El is constant, use SDM. Show all equations including the…

A: Determine the absolute moment at C and B using Slope-Deflection Method.

Q: A cantilever beam is loaded with a uniformly distributed load of kips/ft, as shown in Figure below.…

A: Given: Required : Slope at free end

Q: Questions 9-13 relate to the structure shown in Figure 3 A thin-walled member with the cross section…

A: Vertical shear force = 5 KNThickness of flange = tThickness of web = 2t

Q: Answer

Q: Problem Solving: Round off your final answer to 2 decimal places. 3m 1 3m 4 m 20 KN 15 kN 10 KN 1 2…

A: For the frame provided below, consider the following properties, Members along level 2: Regular…

Q: simply supported beam having a span of 6 m is carrying a concentrated load of 90 kN at a point 2 m…

A: Determinea. Maximum shear force. b. Maximum moment. c. Deflection under the load in terms of EI.

Q: Observed N-value of an SPT test is 21. The N-value after correcting for dilatancy 1. 18 2. 21 3. 19…

A: Observed N-value of an SPT test is, No=21. The N-value after correcting the dilatancy =?

Q: Problem.№3- The plan of a mat foundation is shown in Figure. Calculate the soil pressure at points…

A: Plan of a mat foundation Column size 0.5m x 0.5m

Q: The top width and the depth of flow in a triangular channel were measured as 4 m and 1 m,…

A: A triangular channel- Top width=4 m, Depth of flow =1 m, Velocity at surface- V=0.7 m/s, Velocity at…

Q: A footing 3.0 x 3.0 m carries a net foundation pressure of 130 kPa at a depth of 1.2 m in a deep…

A: Size of footing=3m x 3m , Net Foundation Pressure , qn = 130kPa , Depth = 1.2m , Unit weight of sand…

Q: Given an AADT of 11 000 for a 2-lane highway and an 85th percentile Vehicle operating speed of…

A: AADT = 11000 vpd 85th percentile speed = 50 kmph

Q: An extended aeration tank receives a BOD load of 768 kg/day. If two fixed aerators with oxygen…

Q: soil with a volume of 163cm^3 is sampled from a field. It weighs 221g. Then, the sample was…

Q: 4 kN/m A 4 m 6 kN/m 6 m 2 kN/m B

Q: A jet of water issues from a 5-cm diameter nozzle, held vertically upwards, at a velocity of 20…

Q: 2. Draw the shear and bending moment diagram of the given loaded frame. - B 1m 2m W 10.00 10 kNm 3m…

A: Draw the shear force and bending moment diagram of the frame.

Q: Weight at 0kpa: 396 g Weight at -33kpa: 325 g Weight at -1500kpa: 291 g Weight at -3100kpa: 280g…

A: At 33 kpa% moisture content at 33 Kpa = (Weight at 0 kpa - Weight at 33 kpa)/Weight at 0 kpa%…

Q: 12 indeterminate and 12 determinate frames with Calculation need Asap

A: Statically determinate structure means given structure is having unknown quantities equal to or…

Q: 4) : For the retaining wall shown in Figure-3, determine the force per unit length of the wall for…

A: Given soil profile is, It is asked to determine the, 1. Force per unit length of the wall for…

Q: Situation 2-A rigid bin holds three identical cylinders stacked as shown in the figure. Each…

Q: The specific gravities of solids and carrier fluids of a slurry are usually known, but the specific…

A: Specific gravity is defined as the ratio of the density of solids in the slurry and the density of…

Q: A 1 m wide and 3 m long flat plate, held stationary, parallel to the flow direction of a uniform on…

Q: What are the major watersheds/drainage basins in VA? paragraph form

A: Here It is asked about the major watersheds or drainage basins in VA.

Q: The CalOSHA Construction Safety Orders is an extensive regulatory program that cover all safety…

A: The expenses of doing business may be decreased and workplace diseases and injuries can be avoided…

Concept explainers

Integrated Solid Waste Management

Integrated Solid Waste Management (ISWM) is a thorough waste suppression, compost, removal and recycling Program. An effective ISWM system considers how to suppress, manage and recycle solid waste in a manner that is most efficiently to protect human health and the surrounding. ISWM system requires evaluation of public wants and demands and then selecting and merging the most effective waste management activities for the proposed demands. The main ISWM activities for solid waste management are Waste prevention, Recycling and Composting, and Combustion and Removal and waste collection in a properly planned, constructed, managed and mitigated landfill areas. Each of these requires careful designing, financing, accumulation, and delivery of activities.

Question

Environmental Engg

A septic tank of 7 m³ in volume serves for 5
accumulation of sludge is
people. If the rate of
70 litres per capita per year and sludge is
removed when it occupies 50% of its volume,
what is the cleaning interval of septic tank?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Given Data

VIEW

Step 2: Solution

VIEW

Solution

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

Drinking water from a dam which undergoes conventional treatment has a computed chlorine demand (due to silt, corrosion and bacteria) amounting to 3.5 ppm. Per PNSDW, such drinking water must have a mandatory chlorine residual of 1.0 ppm at source. If production flow is at 500 cu.m./day, calculate the chlorine dosage needed in pounds per day (PPD).
1.) These re process in a water treatment plant except: a. Collection of water from watershed b. Coagulation c. filtration d. sedimentation 2.) Which of the following is the fastest way by which you can get safe drinking water? a. Boiling b. Collecting rainwater c. forest d. watershed and dam 3.) Which of the following does NOT help collect and or store water? a. Aquifer b. Concrete roads and parking lots c. forest d. watershed and dam
Evapotranspiration in an 8 ha farm is 7 mm/day and percolation losses is 2 mm/day. What is the design discharge of a canal to be able to deliver a 5-day requirement of the farm in 24 hours if irrigation efficiency is 75%? Select one: a. 200 m3/hr b. 175 m3/hr c. 150 m3/hr d. 140 m3/hr
Assuming a factor of safety of 2, what will be the water demand when water consumption per capita is 3.7 litres/day in a community of 6000 people and the minimum water released from a reservoir is 150,000 litres?
The storage tank of your plant has a 1.20 million gallon capacity and the demand is 0.40 million gallons per day (MGD). If the pump was broken, how many more days could your plant supply the water?
As the consultant for designing STP, you proposed to use a completely-mix activated sludge system to treat sewage from a population of 45,000 PE. The sewage enters a primary clarifier with a BOD of 300 mg/L and SS of 360 mg/L. The primary clarifier removes 30% BOD and 60% SS. The aeration tank maintains a biomass concentration of about 3400 mg/L with a food to biomass ratio of 0.3 kg BOD5 per kg MLSS per day. The effluent BOD from the aeration tank is 16 mg/L. From a pilot plant study, the Y and kd values are 0.5 kg/kg and 0.06 per day respectively. Assume theunderflow concentration from the secondary clarifier of 9700 mg/L. Based on the above information, determine: i. The concentration of BOD and SS in the effluent of the primary clarifier ii. The volume of aeration iii. The mean cell residence time (MCRT). iv. The daily amount of biomass to be wasted.
If conveyance efficiency is 80% how much is the amount lost if 10 liters/second is available at the source?
If an industrial plant discharges an effluent with a solids concentrationat a rate of 5000 lb/day, and if each person contributes 0.2 lb/day, what isthe population equivalent of the waste?
Example Treatment plant with capacity 50*106 l/day. This treatment plant required 20 mg/l alum. If the water alkalinity as CaCO3 is 6 mg/l. Find the yearly alum quantity and the quantity of CaO which is used as coagulant aid? Atomic weights: Al=27, O=16, H=1, C=12, Ca=40
For a city of population 200,000 capita and WCav =240 l/c/d the average daily WC asfollows:a. Draw the characteristics consumption curve;b. Estimate the percentage of maximum and minimum consumption through the day to theaverage value; andc. Estimate the maximum monthly, daily, and hourly water demand
in simple terms, explain how to use a lagoon and evapotranspiration in wastewater processing and disposal.
A wastewater treatment plant receives 250 mg/L BOD, 45 mg/L NO3-N, and 0.08% TSS. What is the loading of each component (lb/d) if the plant flow is 730,000 gpd?