Pump Controller Articles | Environmental XPRT

Controlling the Flow Capacity of a Metering Pump

Since a metering pump is usually a positive displacement pump there are two possible ways of controlling the flow capacity. The first one is by adjusting the volume of liquid displaced per stroke of the pump and the second is by adjusting the speed of the strokes. I. Stroke Length – control the displacement volume per stroke II. Speed of Strokes per minute Stroke Length ...

Dec. 15, 2016

By Aquflow

Dredge Pumping Systems Improve with VFD Motor Controls

Submitted by Dave Stoltenberg, Dredge Rental Specialist, SRS Crisafulli Pumps and Systems recently published an article by Christopher Jaszczolt titled “VFDs Improve Motor and Pump Control”. The article discussed current applications of variable frequency driven (VFD) motor controls as an excellent method ...

Nov. 9, 2011

By SRS Crisafulli, Inc.

Pump Station Biotrickling Filter Odor Control

Odor Complaints Eliminated at Florida Lift StationEffective Control of Odor Surges to 800 ppmv H2S$50,000 Savings IntroductionNumerous cities and counties in central Florida are experiencing explosive growth. Examples abound in articles in Florida newspapers. Population is growing “by leaps and bounds” per the Seminole Chronicle (6/9/06) ...

Jan. 12, 2007

By Lantec Products, Inc.

Decision support system for main pumping station control, BOS Delfland

The waterboard Delfland uses a DSS to automatically control the 7 pumping stations in its main canal system. Delfland manages a small part of the dutch watersystem in the south-west of the country. The area is mostly below sealevel and it is intensively used, for residential areas, greenhouses and industry. It is only 400 km/2, yet houses 1,6 million inhabitants, multiple cities among which the ...

Sep. 22, 2011

By IWA Publishing

A robust approach based on time variable trigger levels for pump control

An approach for the control of a pumping plant feeding a tank at the inlet of a water distribution system is presented. The approach is aimed at minimizing the energy costs by maximizing pumping during off-peak electricity tariff periods. It is based on trigger levels which are variable during the day according to a prefixed pattern in order to ensure that the water level in the elevated tank ...

Aug. 5, 2017

By IWA Publishing

Fuzzy maximum power extraction control for a photovoltaic water pumping system

AC loads present a delicate matter for photovoltaic systems, and this is because of the photovoltaic panel's operating point, which moves randomly according to irradiance changes; in this case, almost of photovoltaic water pumping systems use a DC–DC converter to ensure either the maximum power extracted from PV panel or the load needs. For AC motor pumps, an inverter must follow this chopper. ...

Dec. 17, 2014

By Inderscience Publishers

More Power. More Control.

Cuyahoga County pumps value to its community through greater control, standardization and technological advancements. Cuyahoga County is the most populous county in Ohio, with nearly 1.4 million residents. Part of Greater Cleveland, the county is named after a Native American word meaning "crooked river." With more than 63% of its total area made up of water, the county strives to foster strong ...

Feb. 7, 2011

By Gorman-Rupp Co.

Controlling the addition of Chlorine into a Process

There are several methods for controlling the addition of chlorine into a process. These methods include flow proportional injection, ORP (oxidation reduction potential) or a residual chlorine analyzer. Each method measures a different process characteristic. Depending on the specific type of process being controlled, there generally is a best choice for controlling the injection of either ...

Jan. 1, 2007

By Walchem, Iwaki America Inc.

Principal Noise Pollution Control

Sources of noise in industrial machinery and processes are : Rotors, Gears, Turbulent Fluid Flow, Impact Processes, Electrical Machines, Internal Combustion Engines, Pneumatic Equipment, Crushing, Blasting, Pumps and Compressors. The most desirable method of controlling a noise pollution is to minimize the noise at the source. This generally means modifying existing equipment and structures or ...

Apr. 19, 2014

By EnviroChem Services (OPC) Pvt. Ltd.

Control of Wastewater Treatment Plants

Instrumentation, control and automation (ICA) of wastewater treatment systems and sewer networks have attracted much attention since the early 1970s. The developments during the last four decades in on-line instrumentation, computer technology, process understanding and subsequent model development, and control methods have been powerful driving forces for advanced control making ICA ever more ...

Nov. 11, 2015

By IWA Publishing

Syringe Pumps vs Peristaltic Pumps - Case Study

Introduction Different applications require a pump, among all the options peristaltic and syringe pumps, are the most suitable. However, selection of the best is always a disjunctive. In general terms, laboratory and industrial process use peristaltic pumps. A user needs to know more about the systems and proper comparison of these technologies. In some cases is difficult to understand ...

Jun. 25, 2018

By Chemyx Inc

Industrial Noise Control Services

Industrial Noise Control Studies Study different equipment noise and recommend suitable noise insulation. This include diesel generators, gas turbines, compressors, pumps, fans, chillers, factory machineries, traffic noise,...etc. Our evaluations and recommended solutions meet general guidelines and practices of international standards and nroise laboratories such as ...

Jul. 26, 2017

By Najah Engineering Consultants LLC

Principles of Solids Control

Although the use of drilling fluids within the HDD / trenchless industry is still relatively new, recent trends suggest that this standard is shifting as solids control is one of the most important phases in the drilling process. This shift is due to a growing awareness that drilling fluid maintenance and disposal can become exponential problems as they are both harmful to the environment and ...

May 15, 2014

By Elgin Separation Solutions

The Nitty-Gritty of Dust Control

Landfill owners and operators spend a lot of time focusing on containment: containment of waste; containment of leachate; containment of gas, litter, and odors. Quite often, containment of dust ranks near the bottom of the list. But that doesn’t lessen the importance of dust control. ...

Sep. 10, 2014

By Blue Ridge Services, Inc.

Case study - pumping in mines

Location: Peru Year: 2011 Working context Pumps have been installed in Cerro Verde and Antamina mines in Peru for pumping tailings and material from in the process plant. The problem Both clients where looking for a pump able to handle slurry with high specific gravity and with solid concentration ...

Jan. 22, 2013

By Dragflow North America

What is a Syringe Pump?

A syringe pump is a type of infusion pump originally developed to help administer drugs to patients in a controlled manner. Early attempts to construct infusion pumps were made in the 19th century. However, the first infusion device was introduced in the 1950s to be used in chemotherapy. In the 1970s, the development of ambulatory infusion technology enabled the pumps to be used in research; ...

Oct. 31, 2017

By Chemyx Inc

White paper - Chemical feed control

The controls, alarms and external contacts are shown on the drawings. As the amount of chemical needed to neutralize the wastewater varies exponentially from neutral pH 7, special consideration must be given to control overshooting the pH. Chemicals, especially viscous caustic soda, must be fully mixed in the compartment before more is added. Rather than modulating the pump settings, the pump is ...

Jan. 19, 2015

By W2 Systems

Programmable Syringe Pump

Chemical and biomedical researchers use the programmable syringe pumps for infusing and withdrawing small amounts of fluid. It helps to mix, separate, and process microfluidics in high precision experiments. Further, it reduces error in biomedical and chemical experiments by providing better infusion control to researchers. The programming ability of syringe pumps help researchers to precisely ...

Feb. 5, 2018

By Chemyx Inc

Industrial Pump Inspection

An industrial pump service and remanufacturing company had two goals in mind when they went shopping for a borescope. First, the scope had to be easy to use and portable enough to take on service calls. Second, it had to have four-way camera articulation in order to steer navigate the pipes and small through-holes that are commonly found in industrial pump applications. They found exactly what ...

Jul. 24, 2015

By RF System Lab.

Odour control on waste water treatment plants and pumping stations using DMT biotrickling filtration

Lengthy detention times and warm weather / climate leads to septic waste water producing copious amounts of not only hydrogen sulphide, but also ammonia, organic sulphides, mercaptans, bringing numerous odour complaints on waste water treatment plants ( WWTP’s ) and pumping stations. An odour abatement unit therefore will have to treat not only hydrogen sulphide, but also other pollutants ...

Mar. 21, 2013

By DMT Environmental Technology BV

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