A lagoon with volume 1200 m^3 has been receiving a steady flow of a conservative waste at the rate of 100 m^3/day for a long enough time to assume that steady-state conditions apply. The waste entering the lagoon has a concentration of 10mg/L. Assuming complete mix conditions, if the concentration suddenly increase to 100mg/L, what would the concentration in the effluent be 7 days later (after the sudden increase of input concentration)?

Q: Consider a well-mixed aeration lagoon to remove BOD from a waste stream flowing at 5 MGD. The lagoon…

A: Data given: Discharge = 5 MGD Dimensions of lagoon Length (L) = 100 m Width (B) = 30 m Depth (D) = 3…

Q: Digester volume = 40,000 ft, Raw sludge volume 5,000 gpd, Sludge concentration %3D = 5% Volatile…

A:

Q: In a certain situation, waste water having dissolved oxygen of 2.36 mg/lt is discharged at 1.25…

A:

Q: 13.1 The settled sludge from coagulation of a surface water is 1.5% solids, of which 30% are…

A: The objective of the question is to calculate the specific gravity of the dry solids, the specific…

Q: 2) BODs of a wastewater is determined to be 78 mg/L at 20°C. The temperature correction coefficient…

A:

Q: A chemical waste at an initial SS concentration of 1200 mg/L and flow rate of 250 m3/h is to be…

A:

Q: need the answer as soon as possible

A:

Q: A river has ultimate BOD of 60 mg/L, a width of 20 m, a depth of 5 m and a flow rate of 9 m3/s. A…

A: The given data is shown below: BOD=60 mg/LWidth=20 mDepth=5mFlow rate=9 m3/sTemperature=20°CUltimate…

Q: A river traveling at a velocity of 12 km/day has a dissolved-oxygen content of 5.4 mg/L, and an…

A: To find out the ,  (a) The initial dissolved-oxygen deficit? (b) The location of the critical point,…

Q: A container of Atrazine (500 g) is dumped into a river 2.3 km upstream of a municipal water intake…

A: Given, M = 500 gm or 0.5 kg L = 2.3 km or 2300 m  A = 5.7 m2  Q = 8.25 m3/s D = 0.1 m2/s

Q: Question 4 The DO in an unseeded sample of diluted waste having an initial DO of 9.5 mg/L is…

A:

Q: sludge to meet their NPDES permit of 15 mg/L BOD5.  The mixed liquor concentration is 1,000 mg/L…

A:

Q: of a waste discharge. The wa . The stream has a reaeration dissolved-oxygen concentratio en deficit?…

A: Given: V=10 km/day x=0 Km

Q: a landfill contains leachate with a chloride concentration of 2135mg/l. the landfill has a clay…

A: Given Data :

Q: You are the lead engineer on a wastewater treatment plant with a biological reactor. You are…

A: Waste water treatment The process of eliminating contaminants from wastewater and transforming it…

Q: Two wastewater streams A and B, having an identical ultimate BOD are getting mixed to form the…

A: Given data- 5-day BOD of stream A =50 mg/L, BOD rate constant KD=0.115 per day, Temperature…

Q: You and your team have decided to build an aerated lagoon to treat the waste generated by a local…

A: Given:Q = 40 m^3 / daySo = 250 mg / L , BOD5S = 15 mg / L, BOD5Ks = 100 mg-BOD5 / Lkd = 0.1 d^-1mu =…

Q: If the BOD, of a waste water sample is 75 mg/ L and reaction rate constant K(base e) is 0.345 per…

A:

Q: A completely mixed activated sludge process is used to treat a wastewater flow of 1 million litres…

A: Given data- Flow- Q=1 MLD,BOD5=200 mg/L,volume V=200 m3, To Find- The hydraulic retention time…

Q: Domestic wastewater has a reaction rate coefficient of 0.3 1/d at 20° C.  The ultimate BOD of the…

A:

Q: The waste flow 18000m³/day is treated by activated sludge process to reduce 97.5% of influent BOD5…

A: Step 1: Step 2: Step 3: Step 4:

Q: 1. The influent suspended solids concentration to a primary settling tank is 435 mg/L. The average…

A: A primary settling tank (PST)-Influent suspended solids concentrations MLSS (Xt)=435 mg/L=435…

Q: A waste of 600 m³/hr flow rate with an ultimate BOD20 = 140 mg/l is to be treated in an activated…

A: According to given data  A waste of 600 m³/hr flow rate with an ultimate BOD20 = 140 mg/l is to be…

Q: Q2) A waste of 600 m*hr flow rate with an ultimate BODZ° = 140 mg/l is to be treated in an activated…

A: Given data: Kd=0.055  day-1Q=600 m3/hrθc=10 daysS=20 mg/lXU=15000 mg/lultimate Bod (SU)=140…

Q: The waste water of a city has a five day BOD value equal to 160 ppm whereas the allowable vahue for…

A: Given: Quantity of waste water = 0.75 MLD                                        = 75 x 105/day BOD…

Q: A river before its entry into a town had a discharge of 200 litres per second and 30 mg/las the…

A: Discharge = 200 l/sconcentration = 30 mg/lwastewater discharge = 250 mg/lconcentration = 75 mg/lTo…

Q: A sample of wastewater is analyzed for coliform organisms by the multiple-tube fermentation method.…

A:

Q: A stream receives a waste outfall which results in oxygen at saturation levels when mixed. The…

A: The given data in the question is: BOD5 of the waste outfall after entry is 40 mg/L KBOD (BOD rate…

Q: A river before its entry into a town had a discharge of 200 litres per second and 30 mg/las the…

A: Discharge = 200 l/sconcentration = 30 mg/lwastewater discharge = 250 mg/lconcentration = 75 mg/lTo…

Q: An effluent stream sample (500 mL) from a metal-working facility contains 0.52 g nickel sulphate.…

A:

Q: a landfill contains leachate with a chloride concentration of 2135mg/l. the landfill has a clay…

A: Given Data:

Q: rcent, suspended solids concentration in digested sludge fed to the centrifuge = 5.0 percent by…

A: Introduction- Diffusive thickening and dewatering is a high velocity process that utilizes the power…

Q: If the BOD3 of a wastewater sample is 75 mg/l and reaction rate constantk (base e) is 0.345 per day,…

A:

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.