CASE STUDIES

Simple, cost-effective sludge management in the far north

Municipal | DATE POSTED: October 6, 2021

The Pangnirtung WWTP, on Baffin Island, experiences below freezing temperatures for eight months of the year, which means every process must be indoors—even sludge management. A centrifuge or belt press was considered for sludge management, but the complexity, cost, high energy usage and limited access to parts made them impractical for the Arctic community.

Instead, the plant uses the Bishop Solids Management Solution, which relies on Geotube® containers, polymers and gravity for low-energy sludge collection and dewatering.

Read the case study to learn how our system makes a big difference for the small plant.

BioCord™ pilot system proves mettle for cold-weather ammonia removal

Pulp and Paper | DATE POSTED: September 13, 2021

Onsite wastewater lagoons at a petrochemical manufacturing plant in Western Canada were experiencing difficulty in meeting the ammonia discharge limit during cold-weather conditions. The three-cell lagoon system provides pretreatment of the facility’s sanitary and process wastewater before the effluent is released to the municipal sewer. But during the winter months, the system struggles to achieve the discharge limit set by the city.

Learn how our simple, low-energy BioCord pilot system demonstrated 97% ammonia removal under some tough conditions.

Coping with rising phosphorus loading at a municipal WWTP

Municipal | DATE POSTED: September 13, 2021

Greenhouses are growing rapidly in Kingsville, Ontario and along with them is the volume of nutrient-rich wastewater that is sent to the community’s Lakeshore West Water Pollution Control Plant (LWWPCP). The plant consistently meets regulatory limits for phosphorus removal; however, public works managers are taking steps to ensure it will continue to do so as nutrient loading increases. Maintaining tight control of phosphorus discharge is also critical to mitigate harmful blue-green algae blooms that are increasingly occurring in Lake Erie.

Learn how ClariPhos™ Rare Earth Coagulant could replace ferric chloride to improve phosphorus removal at the plant and avoid costly capital projects to expand clarifier capacity or add tertiary filtration systems.

Lagoon sludge removal provides affordable solution for algae and H2S issues

Municipal | DATE POSTED: September 13, 2021

Sludge accumulation was thought to be causing significant operational challenges for the O’Leary Wastewater Treatment Facility (WWTF). The lagoons were experiencing serious blooms of blue-green algae during the summer months and exceedances of TSS, BOD and coliform bacteria in treated effluent. Hydrogen sulfide (H₂S) gas, which was also attributed to the algae and sludge, was building up in a below-grade chamber that housed the plant’s UV disinfection system. Read the full case study to learn how our Bishop Solids Management Solution and Lagoon Cleanout Services helped solve the problem.

Geotube® Technology for Storm Pond Cleaning

Municipal | DATE POSTED: June 13, 2017

The City of Vaughan required sediment removal of three separate storm water management ponds. The city wanted to have a minimal impact on the surrounding community and environment. Bishop Water provided hydraulic dredging and Geotube® dewatering technology to contain the sediments.

Brantford Soil Washing Project Using Geotube® Technology

Municipal | DATE POSTED: March 9, 2017

A project at a former industrial brownfield site in Brantford, ON proves that Geotube® containers can significantly improve and accelerate the separation of solids as opposed to gravity settling methods of soil washing.

Hydrocarbon Removal Projects Using Geotube® Technology

Municipal | DATE POSTED: March 9, 2017

Geo-Dredging and Dewatering has been involved with two separate contaminated site clean-ups involving train derailments, and the release of crude oil into the environment. Quebec River in 2014 and a river in Northern Ontario in 2015 were both cleaned using Geotube® technology.

Geotube® Sludge Management System in North Rustico

Municipal | DATE POSTED: March 9, 2017

A simple, effective dewatering technique has enabled North Rustico, PEI to take control of their sludge management while saving thousands of dollars in trucking costs. Their previous plant was undersized, located in the centre of town on the waterfront, and prone to flooding especially during large rainfall events.

Howard Campbell and Sons – Septage

Municipal | DATE POSTED: April 28, 2016

Howard Campbell and sons, located in Lyn, Ontario, operated 2 septage lagoons In October 2009,a full scale dewatering and containment facility was built and operates year round. Sampling of the captured sludge showed dewatered material be to within Ontario’s limits.

Municipality of McDougall

Municipal | DATE POSTED: April 28, 2016

The Municipality of McDougall’s 4 Lagoons were in need of major renovation including relining. Fowler construction worked with Bishop Water to drain the lagoon cells of the sludge. The dewatered sludge was disposed of as landfill material.

The City of London Implements Geotube® Technology for Management

Municipal | DATE POSTED: April 26, 2016

Working with the City of London, Bishop Water conducted a pilot project using a 30’ x 50’ Geotube® to dewater the ash before reaching the lagoon system. The successful pilot project was adapted to the award winning facility that now runs 24 hours day.

Geotube® Dewatering Technology Provides the Perfect Solution for Waste Treatment

Municipal | DATE POSTED: April 26, 2016

In 2005, the Eganville Wastewater Treatment Plant acted as the site for a Geotube^® pilot project with the installation of a 22’ x 22.5’ Geotube® unit. The Geotube® was filled with septage that was allowed to dewater over the winter months with great success. Subsequently, a permanent Geotube® facility was installed on site.

Lagoon Dewatering Solutions Case Study: The Town of Cobalt, Ontario

Municipal | DATE POSTED: April 26, 2016

The Town of Cobalt treats sewage using a constructed wetland. The maintenance forebay that captures the sludge in this process was full and required emptying. Story Environmental contacted Bishop Water to utilize 2, 30’ x 47’ Geotube® units to dewater this sludge. This project took 2 days in November 2009.

City of Clarence-Rockland Uses Geotube® Technology to Decommission Sewage Lagoon

Municipal | DATE POSTED: April 26, 2016

The City of Clarence-Rockland needed to decommission a lagoon cell containing 10,000m3 of sludge for the building of a hockey academy. A 180’ x 200’ Geotube® laydown area was created for Geotube^® dewatering of the sludge with the addition of a polymer injection system. This project took place November 2009, and July 2010.

Perth, ON Saves Over $6 Million in Capital Costs with Geotube® System

Municipal | DATE POSTED: April 26, 2016

Perth, Ontario, saved over $6 million in capital costs on a residuals management system , by implementing Bishop Waters Geotube^® technology. Using 3 Geotube® units, one under a greenhouse for winter use, the system was able to remove suspended solids to below 10 mg/L.

Lagoon Dewatering Solutions Case Study: The Municipality of Arran-Elderslie

Municipal | DATE POSTED: April 26, 2016

In 2009, the Municipality of Aaron-Elderslie, required a safe, cost effective method to clean one of its 3 lagoon cells. Four Geotube® units measuring 30’ x 100’ were used with the addition of a polymer injection systems and dredge. Geotube® sludge removal saved money, time and delivered a cleaner option than previous clean outs.

Dewatering Paper Mill Lagoon Sludge in Ancram, New York

Municipal | DATE POSTED: April 26, 2016

A paper mill in Ancram, NY, run by Schweitzer-Maudit, required dewatering of its secondary treatment lagoons sludge. A dredge removed over 3285 cubic yards of sludge held within over 300 foot of Geotube®. This method was high volume and low cost at achieving the desired goal.

The City of Ottawa Utilizes Geotube® Technology for Sludge Removal

Municipal | DATE POSTED: April 26, 2016

The Monahan Drain Stormwater pond, Ottawa, Ontario, was scheduled for an upgrade in capacity. To enable this, dredging and removal of sludge was required using Geotube® technology. Over just 15 days 2100 tons were chemically treated and contained inside 7 Geotube.

Municipal Sewage Lagoon Dewatering Case Study

Municipal | DATE POSTED: March 9, 2016

Town of North Glengarry chooses Geotube® technology for lagoon clean-out. The township operates a four-cell lagoon system in the village of Alexandria for the management of sewage sludge.

The City of Ottawa Utilizes Geotube^® Technology for Sludge Removal

Municipal | DATE POSTED: March 9, 2016

The Monahan Drain stormwater facility was constructed in 1993 to support the nearby Bridlewood community in Ottawa, Ontario. The drain was built for the residential area as an outlet for the communities urban stomwater. However, growth of the area required an upgrade of the drain to support the increase in runoff and to improve the water quality.

For Municipal Wastewater and Water Treatment, Geotube® Dewatering Technology Works

Municipal | DATE POSTED: February 19, 2016

Geotube^® dewatering technology can solve dilemmas such as space, efficiency, and cost.