Programmable Logic Controllers (PLC) Explained

Posted on Jan 13, 2015

Programmable Logic Controllers (PLC) Explained

A Programmable Logic Controller (PLC) is an industrial digital computer that is used for managing plant automation. Some applications include controlling factory assembly lines, amusement park rides, and waste water treatment plants. PLCs are durable and built to withstand harsh conditions and long hours of operation. Before PLC came along, assembly lines required extensive relays and timing mechanisms. Changing the automation process was time and resource intensive as the entire line would need to be rewired to the new specifications. Thanks tot he advent of the Programmable Logic Controller, these assembly lines and other industrial applications could now be more easily controlled and reprogrammed to suit the new requirements. Programmable Logic Ccontrollers are not your typical breed of computer, however. PLCs are durable and built to endure sever conditions such as extreme heat or cold. They are also modular in that they can be connected to a wide variety of analog and digital devices. A PLC may control magnetic relays, electric motors, Valves, solenoids, acuators, or analog outputs. Louks Engineering specializes in creating high quality extensible PLCs for waste water treatment plants. After meeting with you to discover your needs and requirements, our programmer and panel shop create your PLC and put it through the highest of quality control testing to ensure accuracy and functionality. If you need a highly capable PLC for your waste water treatment plant, contact Louks Engineering today for a free estimate and initial...

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Project: Waste Water Control Panel

Posted on Jan 3, 2015

Project: Waste Water Control Panel

Louks Engineering finished out 2014 with building a control panel for a waste water plant in Mississippi. The control panel is set up for local and remote control, and controls a total of 16 motors.  The operator has the ability to change the Dissolved Oxygen set points via the 7 inch AB control panel, monitoring the motor run time hours and viewing the system operation in real time. The system was successfully started the beginning of December. Does your waste water plant need a new control panel to optimize and enhance your operation? Contact Louks Engineering today for a free estimate and initial...

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How is Aeration Used in Wastewater Treatment?

Posted on Dec 1, 2014

How is Aeration Used in Wastewater Treatment?

Wastewater treatment is a multistep process that uses a combination of mechanical filters and biological processes that help break the wastewater, or influent, down into more manageable components. Aeration is a vital component in that process of the influent and helps stimulate the growth of oxygen-using bacteria. Preliminary Wastewater Treatment – Filtering As the wastewater is collected from street runoffs, homes, and businesses, the influent passes through several filters that help collect debris such as rags, bottles, sticks, cans, and other solid material. Eventually, the wastewater arrives at the treatment plant several stories below in the screening chamber. From here, the influent is pumped up to the main level of the sewage treatment plant. Primary Wastewater Treatment – Separation Next, the wastewater enters primary settling tanks, also called sedimentation tanks. Here, the wastewater will sit for one to two hours, allowing heavier elements to sink to the bottom, and lighter elements to float to the top. The surface is skimmed to collect the lighter material. The settled solids, called primary sludge, are then pumped through cyclone degritters. These degritters use centrifugal force to help separate out sand, grit, and gravel. Secondary Wastewater Treatment – Aeration This is the step in the wastewater treatment process that uses aeration to help further break down the wastewater. Air and “seed” sludge from the previous treatment step are added to the wastewater. Air is pumped into large aeration tanks which mixes the wastewater and seed sludge. This process stimulates the growth of oxygen-using bacteria and other tiny organisms that are naturally present in the sewage. Most of the remaining organic materials is consumed by these beneficial microorganisms, producing heavier particles that will settle to the bottom. The aerated wastewater then moves to another set of holding tanks where the heavier particles formed from the aeration process will settle to the bottom. Wastewater Disinfection After the aeration process and the remaining sludge has been removed, the filtered wastewater must now be disinfected before returning to local streams and lakes. The wastewater will must spend a minimum of 15-20 minutes in chlorine-contact tanks to kill any remaining harmful bacteria or organisms. From here, the treated wastewater, now called effluent, is released to local waterways such as streams and lakes. Now the water may be cleansed and purified by nature’s own processes. Genesis Aeration The Genesis Aerator from Louk’s Engineering is the nation’s premiere aeration unit that is innovative and affordable. Louk’s solar-powered circulation equipment may be used for wastewater treatment and fresh water applications. Genesis delivers energy-saving power to effectively aerate wastewater, supplying the oxygen needed for microorganisms to break down and remove organic materials. Call Louk’s Engineering today at 952.994.1703 to learn how the Genesis Aerator can improve your wastewater treatment facility, or be used for your lake or...

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The Benefits of Alternative Energy

Posted on Nov 15, 2014

The Benefits of Alternative Energy

Alternative energy, or renewable energy, is defined as solar, wind, or water sourced energy. Alternative energy is considered to supplement traditional fossil-fuel sources such as coal, oil, and natural gas. Nuclear energy is also technically an alternative energy, but it is not generally considered as one due to the production of radioactive waste and other harmful byproducts. The biggest advantage to renewable energy is that they don’t harm the environment. When it comes to relying on power from the sun, water, or wind, the energy is renewable and produces no harmful byproducts. These renewable energy sources can be easily used to turn turbines and thus replace oil, natural gas, and other fossil fuels. As for wind and solar energy, the technology related to reaping energy out of these is still in the development phase. Unfortunately, the investment to research these energy technologies is significant. However, once the technology is perfected, these sources will prove to be the most cost effective. There are some drawbacks to alternative energy, however. For example, wind power can only be used in certain geographic areas that have enough wind to make the technology viable. Hydro-electricity can only be used near water sources that have enough volume and flow. Solar energy, however, seems to be the most universal as the sun shines everywhere (exceptions at the extreme north and south poles must be considered, of course). Louks Engineering offer competitive packages on solar panels and windmill systems. We meet, discuss, and plan the complete project with you, and address any questions or concerns. Louks Engineering with design, plan, and install the equipment. We are your partner for your alternative energy needs. Contact us today for a free consultation and to establish a specific plan to meet your...

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The Importance Of Proper HMI Programming

Posted on Oct 23, 2014

The Importance Of Proper HMI Programming

Did you know that all HMI control systems are not all created equally? A poor design results in frustrated employees, poor efficiency, and costly maintenance. HMI Touch Panels are a valuable aspect in the world of industrial automation. The design and applications of these panels are quite challenging. When it comes to designing a new control system, it is critical to ensure that the HMI is easy to operate and maintain. Louks Engineering delivers world class programming and training to reduce the cost of manual labor and increase data accuracy. HMI Key Panels are an alternative to the conventional keypad operator panels. These are PROFIBUS DP compatible. PROFIBUS DP is used to operate the signals generated by the control keys through a centralized controller in automation production processes. Good design is a key factor to get the most out of HMI Touch Panels. The screens need to be created to accurately represent the automation process. Main screens, alarm screens, key panels, and real time data panels are a few of the significant screens that need to be properly programmed when designing a particular HMI Touch Panel for a select brand PLC or controller. HMI Touch Panel design is an artistic job mixed with engineering excellence. Louks Engineering can custom design your new control system including the programming and HMI work, then have our technicians install and commission the system.  Let our professional staff do the program from beginning to end and save you time and money. We also offer an optional post installation service which includes operator training and verifying calibration. Contact us today to start programming your HMI...

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How To Save Time & Money With Clean-in-Place Technology

Posted on Aug 12, 2014

How To Save Time & Money With Clean-in-Place Technology

Clean-in-place (CIP) is a method of cleaning the interior surfaces of pipes, vessels, process equipment, filters and associated fittings, without disassembly. CIP cleaning is faster, less labor-intensive and more repeatable without risk of exposure to harmful chemicals. Since the 1950’s, CIP technology has evolved and transformed the way businesses maintain their equipment. At Louks engineering, we understand the need to be cost-effective and minimize downtime when it comes to cleaning Reverse Osmosis (RO) membranes, so we have taken Clean-In-Place to the next level. Our Portable CIP skid can be easily transferred from one on site building to another, without needing TO move any bulky equipment or dissemble the unit. The Portable CIP skid also features advanced programming and protection, such as low tank level for the pump, and over temp protection for the membranes. This unique feature allows the operator to start the cleaning cycle and walk away while it is cleaning, and the skid takes care of itself. The CIP skid will also shut down automatically when the cleaning timer elapses. Louks Engineering builds, delivers, does the initial onsite startup, and offers training on how to best use the CIP skid. Louks Engineering also offers on-going operator support and onsite service of the CIP skid. This onsite service provided by Louks Engineering can be monthly, quarterly or semiannually. There are several options to own or rent a CIP Portable Skid. Read more… Contact Louks Engineering today to start cleaning your Reverse Osmosis membranes quickly and effectively, thanks to our unique Portable CIP...

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