The methods used to treat and dispose sludge are: 1. Thickening of Sludge 2. Digestion or Stabilisation 3. Conditioning 4. Dewatering 5. Drying 6. Incineration or Thermal Reduction 7. Ultimate Disposal. 1. Thickening of Sludge: Sludge thickening is commonly achieved by the following three methods: (i) Gravity Thickening: Gravity thickening is the most common practice for concentration of sludges as [...]
In this article we will discuss about:- 1. Types of Anaerobic Sludge Digesters 2. Capacity of Standard Rate or Low Rate Sludge Digesters 3. Anaerobic Digester Elements 4. Performance of Digesters. Types of Anaerobic Sludge Digesters: The anaerobic sludge digesters are of the following two types: (a) Standard rate or Low rate or Conventional sludge digesters (b) High rate sludge [...]
In this article we will discuss about:- 1. Types of Aerated Lagoons 2. Design of the Aerated Lagoons 3. Advantages. Types of Aerated Lagoons: Aerated lagoons are deep waste stabilization ponds in which sewage is aerated by mechanical aerators to stabilize the organic matter present in the sewage, rather than relying only on photosynthetic oxygen produced by algae. Thus aerated [...]