Water Environment & Technology (WE&T) is the premier magazine for the water quality field. WE&T provides information on what professionals demand: cutting-edge technologies, innovative solutions, operations and maintenance, regulatory and legislative impacts, and professional development.
A clearer view on clear water
How much infiltration and inflow
(I/I) leaks into sewer systems in the U.S.? The truth is no one really knows.
But, municipal and federal agencies long have recognized the problems
associated with I/I in separate sanitary collection systems.
I/I results from clear water (from rainfall or
groundwater) entering a collection system. This problem has been studied in
detail in some municipalities — mostly in systems with sanitary sewer overflows
(SSOs) where cities have received an administrative order or consent order to
stop them. However, the only information available in the literature at the
state or national level appears to be based on indirect estimates of the extent
and quantity of I/I.
Collection system enlightenment
Like many Florida cities, Crystal
River relies heavily on tourism. However, while some communities promote
beaches and others tout local theme parks, in Crystal River, it’s all about the
But a pollution problem in recent
years threatened the manatee migration. Residential septic tanks, leaky sewer
collection lines, and fertilizer runoff all contributed to the problem.
Civic leaders acted swiftly to begin a remediation
program. They installed new vacuum sewers to replace the septic tanks,
slip-lined the existing sewer lines, and curbed fertilizer runoff.
Preparing Cities for a greener future — in more ways than one
WEF, DC Water partner to create green infrastructure
certification program to promote sustainable stormwater management and spur
Coming in the next issue:
Almost all of us walk around with a
personal computer that we trust to direct us through traffic, keep us in
contact with our friends and family, capture our photos, and tell us where to
have lunch. But apply that same level of technology to our working lives and we
But, many aspects of the water
sector are beginning to embrace integrated computer technologies. Supervisory
control and data acquisition (SCADA) systems and laboratory information
management systems (LIMS) are helping operators capture more data more easily.
By incorporating remote reporting alone — from within a facility or across an
entire district — these systems are eliminating excess travel as well as
minimizing transcription errors and enabling centralized decision-making. Add
in the ability to control systems remotely and operation can be conducted at
separate locations miles apart to ensure that everything works in harmony.
Industrial applications are one
area where use of these technologies is growing fast. The ability to make the
most product from the least amount of resources while minimizing waste is one
of the strengths of data-rich systems. This is especially true when it comes to
making beverages where water is both a feedstock and a process need. Advantages
include reusing water from one process in another process directly, treating
wastewater for reuse, and eliminating pollutants from water leaving a facility
to protect the environment or avoid surcharges for treatment at a municipal
water resource recovery facility.
The technology helps collect data so skilled operators
and designers can focus on maintaining and improving systems and making the
most of our limited water resources.
Also in this issue:
- Operator essentials. What
every operator needs to know about shortcut nitrogen removal.
A consolidation of power. A laboratory removes a
serious safety problem and simplifies operation by upgrading its
uninterruptible power supplies.