Meskhenet Stream has a negligible BOD and the initial deficit after the river and wastewater have mixed is zero. What DO will result if the concentration of the waste(L_w) is reduced by 50%? Assume that the flows remain the same and that the saturation value of DO is 10.83 mg/L in both cases.

Q: A municipal wastewater flow of 1,000 m³/d contains 400 mg/L BOD5 and is treated to be in a trickling…

A:

Q: It is estimated that the BOD of raw sewage received at a treatment plant serving a population 20,000…

A:

Q: A domestic wastewater with BODs of 205 mg/L is treated by a secondary treatment plant that removes…

A: Given, BOD5 = 205 mg/L Initial DO = 9.2 mg/L Final DO = 2 mg/L Bottle volume = 300 ml

Q: 300 mL of wastewater was collected, aerated and seeded with bacteria. The dissolved oxygen content…

A: Given:- The volume of the wastewater collected = 300 mL Initial dissolved oxygen content = 7.4 mg/L…

Q: The wastewater from a manufacturing treatment plant is discharged to a municipal `treatment plant…

A: Given: From manufacturing wastewater: From domestic wastewater: The weight ratio of the mix is…

Q: Three streams are mixing at a junction. The flow rate and total dissolved solids (TDS, a…

A:

Q: After primary treatment, a municipal wastewater contains 150 mg/L BOD5. The wastewater flow of 0.44…

A: BOD5=150 mg/LQ=0.44 m3/s (10 MGD)SRT = 12dHRT=6h To determine- Limiting value of SRT

Q: The wastewater contains 7.5 x 105 fecal CFU per liter. The permissible fecal coliform concentration…

A: Given: Initial coliform concentration, Co = 7.5 x 105 CFU/L Maximum permissible coliform…

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

A:

Q: A PFR is designed to treat incoming waste water containing 7.33 mM of H2S at a flow rate of 100…

A: Given:- The concentration of H2S inside incoming waste = 7.33 mM The flow rate of incoming waste =…

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 domestic wastewater with BOD5 of 205 mg/L is treated by a secondary treatment plant that removes…

A: Given:- BOD5= 205 mg/L, the Secondary Treatment Plant removes 85% of BOD. Initial Do (Doi) =9.2…

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.