Maintaining the water distribution system is critical to ensure customers receive the best water quality. An important maintenance task is to ensure water movement through the system. Dead-end mains, typically in cul-de-sacs, at the end of rural streets, or even in a looped line, are known problem areas for water stagnation, resulting in quality complaints. Residential neighborhoods under construction and large underpopulated developments often have slow-moving or stagnant drinking water.
Our latest product innovation, the TrojanUVFlex, is here. And, it's extremely compact. This video shows the journey of the TrojanUVFlex chamber into the underground drinking water treatment plant in Lichtenberg Berlin, Germany. It was the only product that fit through the space available — avoiding costly, disruptive and time consuming construction.
Corrosion control has always been a priority for distributing safe drinking water throughout the world’s networks of pipeline. This has become all the more critical following the outrageous lead poisoning revelations in Flint, MI — an incident caused directly by corrosion of the city’s lead-based infrastructure.
Over the past 10 years, DC Water has become the harbinger of the modern water utility. It’s often unconventional approach to tackling age-old problems usually elicits one of two responses from other utility professionals. The first response is one of resignation — if only I had the budget that size permits, I’d be able to do similar things. And the second is one of awe — there’s no way I have the amount of gumption to convince regulators or customers that I have a better way.
Without an appropriate control strategy, even the best wastewater treatment plant (WWTP) equipment can struggle to deliver maximum efficiency. Because energy costs represent up to 60 percent of WWTP plant operating expense, air distribution designs and changing loading (biochemical/biological oxygen demand [BOD]/chemical oxygen demand [COD], ammonia) demands require control strategies designed to adapt to all eventualities efficiently. The following checklists, plus important Do’s and Don’ts, can help in identifying an underperforming control strategy and developing a better one.
It wasn’t so long ago that city rivers were some of the more polluted bodies of water on the planet. In 1969 for example, the Cuyahoga River famously caught fire after years of unabated pollution, spurring an environmental movement to clean up the nation’s waterways.
Drinking water and wastewater treatment operators are in a hazardous line of work. Beyond the large, complicated machinery they rely on, the use of chlorine and sulfur dioxide is a regular part of operations, two chemicals that can prove dangerous if not handled properly.
When first moved from water reservoirs, water contains materials that need to be treated and or removed. All microorganisms, flora and fauna waste, assorted dirt and insects all need to be dealt with before, water is fit for human consumption. It is understood that, water needs to make many detours in its path from raw supplies to the tap. All these detours start at the treatment plant. At the plant water goes though applications that remove contaminants such as suspended solids, bacteria, algae, fungi, and minerals such as iron and manganese. The final objective is to turn contaminated debris choked water into safe, drinking water.
This blog is a summary of a presentation I gave at the Water Quality Association’s annual convention in Orlando.
There is little doubt about the importance of taking turbidity readings as part of drinking water treatment. However, there are certain misperceptions about the associated requirements and procedures needed to confirm the validity of those readings. The major points of confusion seem to revolve around perception of the terms “approved,” “calibration,” and “validation.” Here is a quick synopsis on what you really need to know about meeting U.S. EPA Method 180.1: Determination of Turbidity by Nephelometry for accurate turbidity readings.
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