Filter Press Diaphragm Pumps

Air operated diaphragm pumps are used with filter presses to pump sludge from the bottom of the sludge holding tank into the filter press.  These pumps are ideal because they can handle the slurry which is generally about the consistency of a milkshake.

The diaphragm pump usually starts out slowly and gradually ramps up.  Once the pump starts to slow back down, (30-60 seconds between thrusts), it is usually an indicator that the filter press is full.  At this point, the feed pump should be turned off and the valves on the filter press closed as the operator prepares to operate the air-blow-down process.

The diaphragm pump can be manually turned up or an Automatic Pump Control system may be added.  This starts the pump at 25 psi, then moves up to 50, 75 and finally 100 psi which is standard operating pressure for the pump.

Met-Chem provides diaphragm pumps in the following sizes:  1”, 1.5”, 2” and 3”.  The material of construction ranges from cast iron, aluminum, polypro or stainless steel.

With the purchase of a new Met-Chem filter press, Met-Chem can mount your air operated diaphragm pump to the legs of your filter press.  This option also includes a flex hose that connects the outlet of the diaphragm pump to the center feed pipe, an air filter, a regulator, and an oiler.   We can also provide a mounted diaphragm pump for your existing press.

Filter Press Center Feed and Manifold Upgrades

Filter Press Sludge Dumpster

Spare Parts Kit

Met-Chem is pleased to offer our spare parts kit which includes our 5 piece center feed pipe assembly, a head, tail, and 2 intermediate filter press cloths, and 100 foot of gasketing material.  These are essential items for the operation of the filter press. A cracked pipe, ripped cloth, or torn gasket can happen anytime and having these items in your stock will ensure you will be back up and running in no time.

Skid-Mounted Precoat Station

​​
Skid-Mounted Precoat Stations are custom built to work with any filter press (minor changes in the plumbing may be required). The basic precoating system includes a skid-mounted platform with a holding tank, mixer, controls, and a diaphragm pump. The precoat station can also be used as an Acid Wash System to clean filter cloths and maintain high levels of filtration.

The basic precoating operation involves mixing a slurry of filter aid, usually a combination of water and Diatomaceous Earth. The slurry is then pumped into the Filter Press and then recirculated into the holding tank. This process is run until the liquid appears to be clear or until the appropriate depth of precoat is achieved.

Skid-Mounted Precoat Stations can be customized and operated differently depending on the process of your specific application. Contact us for advice on the benefits of these portable skid-mounted systems.


Learn More about a Skid-Mounted Precoat System

Batch Wastewater System

• Wastewater Treatment Holding Tank
• Day or Chemical Tanks
• Mixers
• Metering Pumps
• Diaphragm Pump
• Control Panel
• pH Probes & Controls
• Level Probes & Controls
• Skid Mounted Platform

Automatic Filter Press Pump Control System

Automatic Pump System Control Panel gradually increases the pump pressure up to 100 PSI for standard units. This allows for even filling of the filter chambers.

Longer Legs and Sludge Disposal Chute for Filter Presses

Filter Press Backer Plate for Smaller Batches

Filter Press Plate Shifters

Our standard filter presses can be operated manually. However, Met-Chem manufactures four types of filter press plate shifters to make operating your filter press easier, safer and more efficient. Manual filter presses require more time and attention than the same filter press with an automatic plate shifter.

• Semi-Automatic
• Pendant
• Fully Automatic
• Super Shifter

For some larger presses, we can build a catwalk along with the disposal chute in order to accommodate a roll-off container.

Start-Up Assistance/Installation

• Design and build the equimpent per your specs
• Load, ship, and unload equipment
• Install and rig equipment in facility
• Electrical and plumbing connections
• Train employees
• Debug any issues and solve any equipment/installation troubles