CADSORB 200L

 INSTALLATION AND OPERATING INSTRUCTIONS

CADSORB 200L is a unique concept for water pollution control. CADSORB 200L units are modular, discardable. prefabricated canisters containing specially selected, high activity, water treatment grade activated carbon, and all the essential components of a full-scale absorption system.

CADSORB 200L has been developed to provide a simple, economical method for the removal of hazardous or toxic dissolved organics from small volume waste water streams, in-plant spillage’s, contaminated ground water, hazardous waste lagoons and other areas where small flow, liquid streams need to be treated.

CADSORB 200L units are constructed of Polyethylene, with PVC and ABS internals. They are not suitable for use at temperatures in excess of 40 C, nor in the presence of high concentrations of contaminants which can effect the materials of construction. CADSORB 200L units are not designed for operation under pressure, granular activated carbon must be thoroughly wetted before use to dispel air and to ensure proper contact with the incoming flow.

CADSORB 200L units are supplied with this wetting procedure already carried out in our plant prior to shipment. Before placing the unit into service, fill through the effluent line. The CADSORB 200L is now ready for use in the normal downflow mode.

INSTALLATION INSTRUCTIONS

CADSORB 200L units are shipped ready to install. The canister is self-supporting and should be located on a level, accessible area as near as practicable to the source of the stream to be treated. The canister is designed for downflow operation and is fitted with inlet and outlet connections consisting of 2Omm BSP female fittings. Normally, all that is required for installation is a flexible hose or pipe connecting the contaminated water source to the unit, a similar hose or pipe connected to the outlet of the unit, and a suitable feed pump.

The stream entering the CADSORB 200L unit should have a maximum of 50 ppm suspended solids, or prefiltration may be required. A flow of 16 litres per minute will produce 10 minutes contact time, while a flow of 8 litres per minute will produce 20 minutes contact time. Flow through the CADSORB 200L unit should not exceed 30 litres per minute.

Utilising multiple CADSORB 200L units in parallel operation can enhance organic removal efficiency and contact time. Where multiple units are used, the use of a vacuum break or an anti-siphon loop should be considered.

Wet activated carbon preferentially removes oxygen from the air. In closed or partially closed containers and vessels, oxygen depletion may reach hazardous levels. If for any reason a vessel has to be entered, appropriate sampling and work, etc. procedures should be followed.

REMOVAL OF SPENT ACTIVATED CARBON

It is recommended to use water (hose) to wash out the Activated Carbon. Activated Carbon with sufficient water will form an easy flowing slurry.

RE-CHARGE ADSORBER 

Fill approximately 170 ltr. Of dry Activated Carbon into the adsorber vessel and then add water to overflow level. The activated Carbon should be soaked in water for 72 hours (3 days to remove air bubbles/pockets.

BACKWASHING (OPEN LID)

After wetting the Activated Carbon, backwashing through the outlet connection has to be carried out to remove the floatable material (2% to 7% of total volume). The backwash flow rate has to be carefully adjusted to avoid washing out of the Activated Carbon.

OPERATION AND TESTING

After backwashing, the Unit is to be sealed and re-connected. It is strongly recommended to carry out water testing at regular intervals during operation to ensure continuous high water quality and in order to predict saturation of the Activated Carbon. A decreasing water quality normal indicates that the Activated Carbon is close to saturation.

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