This paper describes Aqua Pennsylvania's successful search for a
residuals handling solution at an 8-MGD water treatment plant (WTP) in suburban
Philadelphia. The paper provides background on this 150-plus year old treatment facility and describes
the need for changes to its existing residuals practices. It documents the alternatives
evaluated and the unsuccessful attempt to implement Aqua's "first choice" solution. The eventual solution became a collaborative effort between the WTP and a nearby sewage
treatment plant (STP). The STP utilizes a belt filter press (Press) to dewater its biosolids,
and it was determined that there was sufficient excess capacity to dewater the WTP residuals
as well as the biosolids using the same Press. The paper explores significant issues on the regulatory, business, and operational fronts that came up while working with two different wastes and two different utilities. Several unique features of the design are summarized,
particularly, sequential batch thickening. The paper presents owner issues and
factors in decision-making, along with technical design aspects and performance and costs of the residuals handling facilities that have been in operation since 2003. Finally, the paper describes how the residuals helped the STP's biosolids meet permit requirements. Includes reference.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 4.1 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 11/01/2008 |
