Using a temporary sewage bypass pumping system and its nondisruptive pipe rehabilitation methods, Insituform Technologies, Inc., has rehabilitated a half-mile-long section of trunk sewer buried beneath a Tucson roadway.
Since the early ’80s, when stainless steel pumps were introduced to the pump market, stainless steel products have faced slow acceptance to date. Comparing the structure of the manufacturing process to that of the traditional cast iron or bronze pumps and parts, the quality, construction, and durability of stainless steel manufacturing faced controversy.
New forming technology produces high-quality and environmentally friendly pumps
Most of us have viewed with fascination the rapid development and evolution of computer technology in recent years, while perhaps overlooking some important technological advancements in the less glamorous, but nonetheless vital, process machinery sectors. Solid advances in basic machinery such as submersible pumps have demonstrated a measurable potential to enhance basic process tasks, increase equipment dependability and provide a long-term reduction in everyday operating costs.
Design features at the Influent Relief Pumping Station (IRPS) recently placed into service for the City of Chattanooga, Tennessee, have resulted in major construction cost savings.
Submersible Pumps in the Dry Well
A "standard" submersible pump cannot operate in a dry well because it must be submerged in order to cool the motor.
The construction costs associated with this alternative are shown in Table 6 and compared with the construction costs for the conventional wet well/dry well design previously described.
This article summarizes the criteria for selecting pumps for specific wastewater applications
The second part of this article compares the different types of pumping stations available to the wastewater industry.
Conventional Pumping Stations
A typical design for a conventional wastewater pumping station is depicted in Figure 4. Such a wastewater pumping station may have the following components:
Part 1 of this article discusses the types of wastewater pumps available and the need for screens.
An Ambitious expansion and upgrade project allows wastewater to be used for irrigation and saves large quantities of potable water.
Advanced Wastewater Treatment
No matter what design solutions engineers and construction contractors devise to contend with the growing number of water and air pollution regulations, they can't do very much without pumps. Gravity sometimes may play a role in water and wastewater systems, but pumps are without a doubt the prime movers in the business of fluid handling.
A review of the role of plastic pumps in water pollution control systems