Tag Archives: leachate management

State vs Federal CCR Rule Regulations: Comparisons and Impacts

March 28, 2019

World of Coal Ash in St. Louis, May –13-16, 2019 event details.

When the Federal CCR rule went into effect in 2015, it was a new regulatory layer on top of a widely varying landscape of state regulations affecting CCR management in impoundments and landfills. Some states already had significant regulations on the books for CCR impoundments and/or landfills, while others did not. Where state regulations existed, they varied widely from state to state. While a few states have moved toward closing the gap between state and federal CCR requirements, many utilities continue to face confusing and conflicting requirements coming from different regulatory programs as they move ahead with managing their CCR facilities.

Through case studies, SCS Engineers will share state-versus-federal regulatory challenges utilities have encountered in different regions of the country during landfill design and management, impoundment closure, and groundwater monitoring and reporting since the implementation of the Federal CCR Rule. For example, some sites have completely distinct groundwater monitoring programs under state versus federal rules, with different well locations, well depths, and monitoring parameters for the same facility. We will highlight unique approaches to bridging regulatory gaps and resolving regulatory conflicts between state and Federal CCR requirements.

SCS will also share insights gained on the long-term potential for regulatory resolution of these issues based on discussions with state regulators in multiple states.

Speakers:

 

 

 

Posted by Diane Samuels at 6:00 am
Tag Archives: leachate management

Minimize CCR Landfill Leachate and Contact Water Management

March 21, 2019

World of Coal Ash in St. Louis, May –13-16, 2019 event details.

Learn how to minimize leachate and contact water management at coal combustion residual (CCR) landfills using good design, physical controls, and operational practices. Through our presentation of case studies, you will learn how to assess leachate and contact water management issues and implement techniques to minimize leachate and contact water management at your landfill.

Leachate management and contact water management at CCR landfills can be expensive, cause operational headaches, and divert valuable resources from other critical plant needs. Our presentation will provide you with useful tools to ensure your landfill is designed and operated to effectively reduce leachate and contact water and alleviate operator stress. We will present case studies that highlight how design features, physical controls, and operational practices have effectively decreased leachate and contact water management at CCR landfills.

Speakers:

 

 

Posted by Diane Samuels at 6:00 am
Tag Archives: leachate management

SCS Advice from the Field: Maximizing Leachate Pumping System Performance after Expanding Landfill Footprint

February 13, 2019

 

Evaluating the performance of any existing pumps along with new pumps when a lateral expansion is designed ensures optimal performance with minimal wear on the pumps.

 

Regulatory and siting restrictions are such that many solid waste operators prefer to expand their existing landfill footprint as much as possible instead of finding a new disposal footprint at a different location. As landfills are getting larger in height and greater in footprint area, the location of leachate tanks, leachate ponds, or discharge points to an on-site or off-site leachate treatment plant usually does not change. A larger footprint means leachate force mains are getting longer forcing the existing pumps to work harder to push leachate through the system to a target point. Some operators carry on with the same pumps for decades and do not monitor the performance of the pumps after expanding the landfill footprint, which could be more costly in the long-term.

Pumps on the primary and secondary risers at a disposal cell leachate structure.

Hydraulic Evaluations for Lateral Expansion
The longer leachate force main with possibly additional bends in the line increases friction in the line and causes flow rates to reduce to unexpected levels. We recommended that landfill operators evaluate the performance of the existing pumps along with new pumps when designing a lateral expansion. Such an evaluation may require hydraulic analysis of the entire network of pipes along with pumps, or only the segment of the network affected by the expansion. However, the effort is minimal in comparison to the operating costs of inefficient flow and overtaxing the equipment.

Sometimes the results of a hydraulic evaluation may require up-sizing all or specific pumps in leachate sumps because not enough flow can go through the force main due to high friction loss in the expanded leachate force main. Up-sizing pumps may be achievable depending on the type of the leachate sump, i.e., riser system or vertical manholes. If the up-sized pump in a riser system is too long to fit inside a riser system, or so long that it makes routine maintenance too cumbersome, your engineer may consider enhancing the functionality of the design.

Booster pumps on a network of leachate force mains before connection to an off-site discharge line.

Inline and Offline Pumps
Booster pumps located along an expanded leachate force main can certainly be an option. Booster pumps can be the inline or offline type. Install the inline pumps on the actual force main, and position the offline type on the side so that liquids go through bends and elbows to reach the pump, and again through bends and elbows to get back in the force main. In either case, the booster pump adds hydraulic energy to the flow inside the force main to push the liquids at a compensated pressure through the remainder of the force main and to the target point.

Operators need to be aware of the dynamic nature of the leachate piping network and the role of booster pumps in the dynamic environment. Changes to the flow in the force main may change following a landfill expansion when the new cells are coming online increasing leachate generation. Alternatively, after closing portions of the landfill slopes, that decreases leachate generation over time. Sometimes booster pumps have to be up-sized or downsized depending on the flow and pressure in the system.

A junction of leachate force mains coming together from various operations.

Optimizing Performance, Reduce O&M Costs
The cost of replacing pumps, up-sizing, or downsizing, is insignificant compared to the revenue that landfills generate. Proper adjustment of the pumping system keeps the entire network operating at the appropriate range of pressure, and velocity in the line; increasing the life of the pumping system. Less wear and tear on the system produces a reduction in maintenance costs along with less equipment downtime.

Lower maintenance requirements may also reduce the number of personnel required to keep the system in operational condition. Landfills with a large pumping system employing a second technician because of the high maintenance of multiple pumps may find a single technician sufficient for the upkeep of the system. Proper sizing of pumps and operating the pumping system as designed within the evaluation parameters can significantly reduce the cost and frequency of pump maintenance.

 

About the Author:  Ali Khatami, PhD, PE, LEP, CGC, is a Project Director and a Vice President of SCS Engineers. He is also our National Expert for Landfill Design and Construction Quality Assurance. He has nearly 40 years of research and professional experience in mechanical, structural, and civil engineering.

 

Landfill Engineering and Leachate Management

 

 

 

 

 

 

Posted by Diane Samuels at 6:00 am
Tag Archives: leachate management

Minimize CCR Landfill Leachate and Contact Water Management – EUEC 2019

January 24, 2019

 

EUEC 2019

 

At EUEC 2019 learn how SCS can minimize leachate and contact water management at coal combustion residual (CCR) landfills using good design, physical controls, and operational practices.

Through this SCS presentation of case studies, you will learn how to assess leachate and contact water management issues and implement techniques to minimize leachate and contact water management at your landfill.

Leachate management and contact water management at CCR landfills can be expensive, cause operational headaches, and divert valuable resources from other critical plant needs. Our presentation will provide you with useful tools to ensure your landfill is designed and operated to effectively reduce leachate and contact water and alleviate operator stress. We will present case studies that highlight how design features, physical controls, and operational practices have effectively decreased leachate and contact water management at CCR landfills.

2019 EUEC in San Diego, February 25-17, 2019. Conference details here.

 

 

 

Posted by Diane Samuels at 6:00 am
Tag Archives: leachate management

Minimize CCR Landfill Leachate and Contact Water Management

December 21, 2018

Learn how to minimize leachate and contact water management at coal combustion residual (CCR) landfills using good design, physical controls, and operational practices.

Through this SCS presentation of case studies, you will learn how to assess leachate and contact water management issues and implement techniques to minimize leachate and contact water management at your landfill.

Leachate management and contact water management at CCR landfills can be expensive, cause operational headaches, and divert valuable resources from other critical plant needs. Our presentation will provide you with useful tools to ensure your landfill is designed and operated to effectively reduce leachate and contact water and alleviate operator stress. We will present case studies that highlight how design features, physical controls, and operational practices have effectively decreased leachate and contact water management at CCR landfills.

2019 EUEC in San Diego, February 25-17, 2019. Conference details here.

Posted by Diane Samuels at 6:00 am
Tag Archives: leachate management

Meet Leachate and Wastewater Experts at WASTECON® 2018

August 15, 2018

Managing landfill leachate is increasingly challenging and costly. SCS Engineers has arranged to provide you with the opportunity to meet with leachate and wastewater experts at the SCS Engineers booth 604 during WASTECON’s exhibit hours.

The leachate treatment experts will provide you with the opportunity to discuss the issues and challenges at your landfill’s leachate handling/treatment facilities. The experts can discuss with you leachate treatment and management options, best practices, and strategies that make sense at your specific facility and under your site-specific conditions. They can help supplement your knowledge of best practices and provide insight into technology or practices that could be the most effective to help lower your operational costs.

Meet the Experts

Frank Natau, Senior Expert for treatment of leachate and waste-derived effluents at WEHRLE, a global provider of landfill leachate and system solutions for cleaning highly polluted wastewater with over 300 leachate treatment facilities in successful operation at landfill facilities worldwide.

Dr. Bernd Fitzke, Ph.D. is Chief Technology Officer at WEHRLE. Dr. Fitzke is head of wastewater technology at WEHRLE, and he has completed international research projects regarding design, construction, and improvement of wastewater treatment systems. His most recent work focused on process integrated biological and oxidative wastewater treatment.

Sam Cooke, PE, CEM, MBA, is SCS’s National Liquids Management Director with nearly three decades of professional and project management experience in engineering with a concentration in environmental and wastewater engineering.

Dr. Viraj de Silva, PE, has over 26 years of progressive experience in wastewater engineering, from concept through construction and start-up, and is an international leader in wastewater systems operations and maintenance, energy management, solids handling processes, construction management, and commissioning of wastewater treatment plants around the world.

What Can You Expect to Learn?

  • What the best practices are for reliable performance when variations occur with leachate volume and contaminant loads.
  • What is required for reliable operation of leachate treatment systems, in difficult climatic conditions.
  • How modular design makes for simpler maintenance and upgradability at lower overall costs of wastewater treatment facilities.
  • How automated leachate treatment operation minimizes supervision and makes the plant operation run smoother.
  • Why certain treatment technologies are better suited for leachate treatment than their alternatives.
  • Why having the correct leachate flow and quality information can save you in treatment capital and operational costs.

 

 

 

Posted by Diane Samuels at 7:00 am
Tag Archives: leachate management

USWAG CCR Workshop – Washington DC Metro Area, May 22 – 23, 2018

May 17, 2018

Leachate management and contact water management at CCR landfills can be expensive, cause operational headaches, and divert valuable resources from other critical plant needs. The SCS Engineers’ presentation will provide you with useful tools to ensure your landfill is designed and operated to cost-effectively reduce leachate and contact water and alleviate operator stress. We will present case studies that highlight how design features, physical controls, and operational practices have effectively decreased leachate and contact water management at CCR landfills.

USWAG event details – click here.

USWAG Leachate Management Workshop Video

 

 

Posted by Diane Samuels at 6:02 am
Tag Archives: leachate management

SCS Advice from the Field: Minimizing CCR Landfill Water Management Costs

May 10, 2018

 

Learn how to minimize leachate and contact water management costs at coal combustion residual (CCR) landfills using good design, physical controls, and operational practices. Through the SCS use of case studies, you will learn how to assess leachate and contact water management issues and implement cost saving techniques at your landfill.

Leachate management and contact water management at CCR landfills can be expensive, cause operational headaches, and divert valuable resources from other critical plant needs. The SCS presentation at USWAG will provide you with useful tools to ensure your landfill is designed and operated to cost-effectively reduce leachate and contact water and alleviate operator stress. We will present case studies that highlight how design features, physical controls, and operational practices have effectively decreased leachate and contact water management at CCR landfills.

Don’t miss this USWAG Presentation in May…See more about this USWAG event here.

SCS Engineers – Serving Utilities Nationwide

 

 

 

Posted by Diane Samuels at 6:03 am
Tag Archives: leachate management

Liquids Management – Wastewater Solutions

October 17, 2017

SCS Engineers offers innovative, cost-effective wastewater solutions supporting leaders in solid waste, construction, manufacturing, and mining overcome their liquids management challenges. Click to read and share our interactive brochure, or click directly to your industry below:

Landfill Leachate Engineering
Our innovative use of landfill assets and technology means we can provide superior upstream solutions to reduce leachate production, as well as cost-effective downstream solutions for leachate management and treatment. We also offer a powerful tool for tracking and analyzing leachate information from multiple data collection points. SCSeTools® Leachate Module enables our clients to evaluate disposal trends and effectively manage disposal costs.

Dewatering Contaminated Sites
Our responsiveness, experience on large and complex projects, and strong relationships with regulators means our clients can avoid costly delays on construction projects, where contaminated groundwater is discovered.

Industrial Wastewater Pre-treatment
We deliver comprehensive solutions for our clients’ industrial wastewater pre-treatment requirements, from feasibility studies to permitting, designing, operating and monitoring treatment systems.

Deep Well Injection
We have extensive experience in providing this often overlooked but highly effective solution for treating and managing liquid waste.

 

 

 

Posted by Diane Samuels at 6:00 am
Tag Archives: leachate management

10 Tips for Preventing Landfill Leachate

July 18, 2017

Hot off the Press at Waste360.com

Article and Slideshow of Landfills using these Best Practices to prevent leachate. Click Hot off the Press to view.

Posted by Diane Samuels at 10:27 am
SCS Address

Corporate Headquarters

3900 Kilroy Airport Way Ste 100
Long Beach, CA 90806-6816

Telephone

1 (800) 767-4727
1 (562) 427-0805 | FAX
service@scsengineers.com

Required Posting