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Projects


Removal of Oil Sludge from Lipodan Reservoirs Rishon Lezion, Israel

Method: Geotube®

The Lipodan Company recycles oils that arrive from restaurants and garages.

Over the years, it accumulated a large quantity of mineral oil sludge in its collection pools.

The objective of the project was to evacuate the pools while saving and recycling the residual oils in the sludge and drying out the sludge in order to minimize removal costs.

The sludge that settled over time became impossible to pump; storage of the sludge in the area of the concrete pools generated operational and removal problems, including environmental pollution and production operations disturbances.

Using the Geotube method, it is possible to separate at least 99% of the solids from the filtrate, which leads to a very high extractability of solids.

Additional information (.pdf file attached).



Dewatering of Haifa Refinery Sludge
Sludge accumulated in three concrete pools at the Haifa Refinery, a total volume of 10,000m3.
The sludge contained three elements:
  • Oil
  • Water
  • Solids
Project objective - empty the pools as quickly as possible.
The sludge was pumped into 11 Geotubes of the dimensions:
6 X 35m long with a circumference of 18.3m = c. 380m3 of sludge each.
5 X 30m long with a circumference of 18.3m = c. 330m3 of sludge each.
The filtrate water contained water and oil that were pumped into the oil/ water separator on the premises of the oil refinery, so that it was possible to recycle oil from the sludge.
Even now, a year later, drainage of oil from the Geotubes can be seen.


Pumping and Dewatering of Sediments – Yad Hana Wastewater Treatment Facility
The Shechem River flows from a Palestinian Authority- controlled area and contains large quantities of wastewater and mineral matter originating in the stone industry. The river water is diverted to the Yad Hana Wastewater Treatment Facility to treat the polluted water and return it to the river.
The diversion is done into a collection pool where the mineral solids accumulate and settle. The goal of the project is to remove the solids that accumulate in the sedimentation pools.
Admir Environment provides services to pump the solids from the pool and periodically dewater them using Geotubes.
A spill containment pallet containing 25m long Geotubes with an 18.3m circumference is installed on the premises of the wastewater treatment facility. The solids are pumped into the Geotubes during the flocculation process. The filtrate water, free of solids, is returned to the pool through gravitation.
The concentration of solids after drying is c. 50%.


Deepening the Daniel Rowing Center, the Yarkon
The Daniel rowing marina in the Yarkon River estuary fills up, over time, with alluvial sediments that settle in the marina and disrupts the passage of boats through it.
Therefore, every few years the marina must be deepened.
The purpose of the center is youth sporting activities, and it was therefore necessary to find a solution that would not disrupt the ongoing activities and that would keep it clean, with no excessive pollution that is liable to damage rowers.
The solution chosen was to build a temporary spill containment pallet alongside the building, and to pump the sediments, using a dredger, into the Geotubes places inside the pallet.
Filtrate water was drained back into the marina using gravitation. The concentration of solids in the filtrate water wend down from 100,000 mg/l to 50 mg/l.
The concentration of COD went from 15,160 mg/l down to 155 mg/l.
The percentage of solids in the dried sludge was over 60%.


Removal of Oil Sludge – Akko Wastewater Treatment Facility
Due to an error that occurred at one of the food plants near the Akko Wastewater Treatment Facility, oil sludge flowed, accumulated, and clogged the anaerobic reactor of the wastewater treatment facility. The oil hardened inside the reactor and the oily matter stopped its operations.
Admir Environment's unique pumping solution, which includes using Geotubes to dewater the sludge, was performed for a short period of time before the reactor was cleared and cleaned.
The reactor is currently free of oil sludge.


Pilot for Dewatering the Sludge of the Netanya Wastewater Treatment Facility
The purpose of the experiment was to prove the feasibility of pumping and dewatering the sludge from the sludge ponds using Geotubes.
The feasibility was assessed based on the percentage of solids in the bag and the quality of filtrate water.
A pilot was conducted on the premises of the wastewater treatment facility, and tests proved that high quality filtrate water is produced, whereas the percentage of solids went up to 18% within two months.
After six months of biological processes inside the Geotubes, the solids broke up.
The height of the Geotube at the conclusion of the pumping was over 2m, and had gone down to 40cm on average by the end of c. six months.
The Geotube that remained on the premises for over six months was completely odor free.


Emergency Solution for Dewatering Sludge at the Ashdod Wastewater Treatment Facility
There is a single centrifuge that operates at the Ashdod Wastewater Treatment Facility.
Dependency on one centrifuge forced the wastewater treatment facility to find an emergency solution for a case in which there was a need to stop the dewatering due to an ongoing problem or maintenance.
To that end, a single Geotube was installed on the premises of the wastewater treatment facility, prepared by opening valves only so that it could immediately start working to dewater.
The Geotube was activated with an increased accumulation of sludge at the wastewater treatment facility, and provided a solution for two weeks.


Pilot for Using MDS-type Geotubes to Dewater Mercury Sludge at the Machteshim Plant
The Machteshim plant operates an existing system for dewatering wastewater. The process causes a buildup of cellulose in the dry sludge.
Using an MDS (Mobile Dewatering System) type Geotube - adapted for dumpsters - has proven to be a cost-effective and efficient solution.
The concentration of solids in the sludge after dewatering - 50%.
Clear water, free of floating solids.
This solution allows for savings in energy and manpower.
Reduction of the volume of cellulose creates significant savings in the cost of removing and burying the sludge in a hazmat landfill.
Another advantage in using a Geotube placed inside a dumpster is the increased work safety since there is no suspension of the dry solids and therefore they are not exposed directly to the toxic mercury sludge.



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