Activated Carbon Systems Remove Organics, H2S from Sewer Gas Streams: Odorous compounds can permeate residential neighborhoods and affect the health and the overall working environment for publicly owned treatment works (POTW) personnel.
Aeration System Also Provides Biological Nutrient Removal: Population Growth was straining the resources of the West Richland County Public Service District (Columbia, SC). Its Gill's Creek Wastewater Treatment Plant now had processing problems and wanted to increase capacity from 30,000 to 60,000 m3/d (8 to 16 mgd), but had little room to grow onsite.
Aeration System Helps NYC's Largest WWTP Meet EPA Mandate: In 2003, work began to upgrade the 310 mgd Newton Creek facility. As part of the more than $3 billion secondary treatment upgrade, the plant added systems to reduce TKN and other biological pollutants and to generally improve municipal water quality.
Biological Wastewater Treatment: The use of Microorganisms to remove contaminants from wastewater is effective and widespread. To choose the right system from the many options offered, understand the various techniques available and evaluate them based on your requirements.
Biosolids 101 - Sorting through the Muck: Biosolids. In the United States, more than 19,000 municipal treatment facilities generate 7 million dry tons of this nutrient-rich material every year. They spend $1.1 billion to treat and dispose of the stuff. Over 80 percent of it is recycled and reused.
Centrifuge Dewatering System Designed to be "Plug and Play": The Centrapac™ centrifuge dewatering system offers a "plug and play" solution to sludge dewatering. Walton County, FL installed a Centrapac centrifuge to increase dewatering capacity.
Controlling the Impact of Energy Costs: Auditing and actively managing energy costs can increase beverage plant efficiencies.
Deionization - An In-Depth Study of Copper Selective Resins and Activated Carbon Processes in Treating CMP Wastewaters: As a result of advances in semiconductor device technology, the semiconductor industry must now treat wastewater from various processes associated with the use of copper.
Digester Gas Provides Savings: Digester gas is a source of free energy that can greatly reduce operating costs for wastewater treatment facilities. As the cost of natural gas and other fuel alternatives continues to soar more facilities are reviewing their strategies for handling digester gas.
Enhanced Nutrient Removal Using a Continuous Backwash Filter for Secondary Effluent Denitrification: As effluent discharge permit limits become more stringent, utilities are constantly searching for efficient and costeffective methods to meet these tighter restrictions.
Get the Most Out of API Separators: The keys to maximizing performance include a realistic, educated awareness of the separator’s capabilities, an understanding of how the device functions, and an appreciation of what it should have in the way of support equipment.
High-rate Combined Solids Contacting and Thickening Minimize Footprint and Maximize Treatment: Waste production and footprint are important considerations in the design of any industrial water treatment plant. Many industrial water treatment facilities use lime softening to reduce hardness, suspended solids, silica and other potential foulants in their cooling water, boiler feed and other process water systems.
Hybrid Aeration Process Provides Power Savings: In most wastewater treatment plants, aerating activated sludge systems consumes the majority of the plant's power. Thus, the efficiency of the aeration system becomes a major factor in designing an economically operated plant.
Membrane Filtration Improves Water Quality at Point Beach Nuclear Power Plant: This paper discusses the technical, economic and operational issues addressed in improving RO feedwater to acceptable standards for the Point Beach Nuclear Plant. The final design, incorporating membrane filtration, resulted in a more economical and reliable system to operate and allowed full utilization of the capacity of the RO system.
Membranes for Reuse - Industrial Applications using Microfiltration as RO Pretreatment: As water shortage problems become more widespread, with traditional water supplies either dwindling in supply and/or quality and water costs increasing, communities and business alike are seeking alternative, sustainable water sources to meet their increasing needs.
Metering Pumps in the Water Treatment Industry: Metering, or dosing, pumps are positive displacement diaphragm pumps typically used to introduce chemicals into the treatment process accurately.
Microfiltration Performance Enhancement Using an Air-Scour, Air-Assisted Liquid Backwash Regime: This paper presents recent advancements in the MEMCOR® membrane filtration process. The new CMF-L process incorporates an improved membrane technology with a low-pressure liquid backwash regime that uses less energy and increases water recovery.
Odor Free Sludge Drying for the Town of Forest City, North Carolina Wastewater Reclamation Facility: This paper describes operating experiences with an Internal Rotating Chamber (IRC) dual heat source, indirect dryer for drying biosolids at the Forest City, NC Water Reclamation Facility. The dryer dries biosolids to 90% D.S., meeting the requirements for Class A material.
Onsite Hypochlorite Generation - Solving Oil & Gas Industry Biofouling Issues: Producers of the second largest oil field off Canada’s North Atlantic Coast, the Terra Nova field, turned to USFilter, part of Siemens Water Technologies, for an onsite chlorine generation system to reduce fouling of water used in process cooling systems of a floating production storage and offloading (FPSO) vessel.
Optimizing Existing Water Treatment Systems: Keeping aging water treatment systems running efficiently presents unique challenges to users. How do you extend the life of these essential system components?
Peristaltic Hose Pumps Address Plant’s Hypochlorite Metering Requirements: Columbus, Ohio’s Jackson Pike Wastewater Treatment Plant (WWTP) uses seasonal disinfection. Located in a highly industrial/residential area, the plant has a design treatment capacity of 68 mgd and a peak treatment capacity of 110 mgd.
Refineries and Petrochemical Plants have Turned to RBC and SBC Applications to meet Biological Treatment Requirements: Petroleum refineries and petrochemical facilities commonly consider a number of key factors when evaluating which biological treatment technologies to install in a plant expansion or new construction.
SBR Plants Provide Wastewater Treatment Solution for Housing Developers: Developers seeking to build new homes in housing developments are sometimes required to install a wastewater treatment system in order to obtain construction permits, depending on the regulations in their particular state.
Separating Fact From Fiction with Oil/Water Separators: According to the U.S. Environmental Protection Agency’s National Emission Standards for Hazardous Pollutants (NESHAP) for benzene (EPA 40CFR61, March 1990), petroleum refineries must enclose their oil/water separators with a floating cover system or a fixed cover with a closed-vent system followed by an emission control device.
Utility Turns Sludge Problem into Useable Product: Newport, TN sends about 2.8 mgd of sewage to its municipal wastewater treatment plant. After it is screened, skimmed, treated, filtered, chlorinated and dechlorinated, the treated liquid is released back into area rivers and streams. The sludge byproduct of the wastewater treatment process also is being returned to nature for beneficial reuse.
VOCs and NOx: Better Control & Lower Costs: New techniques for measuring and eliminating VOCs and NOx cut the costs of environmental compliance.
Water Assessments: The Search for Hidden Dividends: A close look at all aspects of your water- and wastewater- treatment systems can reveal opportunities for cost savings, improved operation, reduced downtime and better water conservation.
Zero Liquid Discharge System Maximizes Recycling Success: Declining water reserves and high costs make water a valuable resource in Mexico where it is considered a key manufacturing resource. International Truck and Engine’s truck manufacturing facility in Escobedo, Nuevo Leon, Mexico, reduced its fresh water demands and eliminated wastewater discharges into local waterways by installing the zero liquid discharge (ZLD) system, which produces more than 119,000 gallons per day (gpd) for water reuse.