Showing posts with label Water Treatment. Show all posts

Wednesday, February 14, 2018

Filter Press Pumps that can handle the slurry

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”. 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.

for more information on Filter Press Pumps visit Met Chem

Monday, March 17, 2014

About Lakeside Water Treatment

Reliable & Innovative Provider of Commercial and Industrial Water Treatment Systems

They have established themselves as a reliable and innovative provider of commercial and industrial water treatment equipment throughout the world.

Their product offerings include water softeners, dealkalizers, demineralizers, filters, reverse osmosis, and condensate polishers. They incorporate other products such as forced air decarbonators, bulk brine silos, regeneration stations, chemical feed systems and neutralization systems, to provide a complete sole source water treatment package to the end user customer. Their technically trained sales and engineering staff, not only provide you with products, but also provide you with sizing and selection assistance in order to make sure that the equipment selected is the best choice for the project.

Lakeside Water Treatment Inc. was founded in 1990 by experienced water treatment professionals. They average over thirty years of industry experience per employee. At the same time the latest in CAD and computer networking technology is being utilized. Their engineering staff has evolved from the water treatment industry bringing together at one facility, the necessary process, controls and manufacturing expertise to produce the type of quality built equipment that you can trust to perform.

They are located on the northwest side of Milwaukee. Customers are welcome, at any time, to tour their facility and learn more about how Lakeside can assist their efforts.

Thursday, March 13, 2014

Filter Presses

Filter Presses have been the focus of Met-Chem manufacturing for many years. They have built a solid reputation for building quality Filter Presses and Complete Waste Treatment Systems. Their filter presses have been used in many different industries; from plating and metal finishing to chemical and food processing. Met-Chem Filter Presses feature heavy duty steel construction with polypro gasketed plates. One great feature about Met-Chem's filter presses is that they are always expandable for larger future capacity by adding longer sidebars and additional plates.

Wednesday, March 12, 2014

Poly Products CorroDuct™ Line

New Product! Poly Products Corro-Ducts™ CORROSION RESISTANT DUCTING

These virgin molded polyethylene Corro-Ducts™. are made as one piece with NO SEAMS. As we know welds have been known to crack and leak over time, especially in chromic acid and other hazardous chemicals; However that won't happen with these neat Corro-Ducts™.

Each Corro-Duct™ has a “Slip Fit” end so that it will easily slide into the adjacent matting Corro-Duct™. Sealant may be used but is not required. With the variety of combinations available from the interconnecting Corro-Ducts™ it will be easy to maneuver around any obstruction.

Monday, March 10, 2014

Filter Press FAQs

1. How do I know when the filter press is full? The diaphragm pump will get to 30 second to one minute intervals between thrusts, indicating that pressure has increased due to solids building up inside the press cavities. This is your signal that the press is full.

3. What is involved in routine filter press maintenance? Cloth cleaning, dumping, check hoses and connections.

4. When do the cloths need to be cleaned or replaced? The filter cake will begin to become wet, slimy and not as dry. This is your indicator that the cloths need to be cleaned. (see number 5 for cleaning info). If you have already cleaned your cloths and your process has not changed but you are still getting slimy filter cake, it may be time to replace your cloths. Cloth life varies from installation to installation and depends on such variables as frequency of cycles, proper cleaning and maintenance and the type of sludge that is generated. Generally speaking for most installations cloths can last up to 6 months at the most.

5. Will I need to replace the plates? Plates generally last years unless they become cracked, broken or warped. It is good practice to examine the plates during press cleaning and dumping.

6. Can I expand my press for larger loading capacity? Expansion depends on a couple of factors. First, if your press is already expandable, meaning you’re your press has a distance piece for expansion to a larger capacity, all you need to do is unbolt the distance piece and add additional plates in the 1-3 button sequence taking care that you add plates in even numbers. However, if you have a Met-Chem press or your press has notched and bolted sidebars, then it can also be expanded by removing the sidebars and replacing them with longer sidebars and installing additional plates. Please note that when adding plates, you must be sure to add them in the 1-3 button sequence in order to provide proper drainage.

7. Can I add more plates to my current press? You may be able to add a couple of plates without expanding your sidebars if your press is not already expandable but care must be taken to ensure that you have adequate cleaning room when dumping the press and cleaning the cloths.

8. How long is the cycle time? Cycle time is dependent on solids loading and can take anywhere from 2-4 hours on average. (Closer to four hours for typical metal hydroxide waste.)

9. What can I do to ensure the driest possible filter cake? Be sure cloths are cleaned as needed and the air blow-down system is run for a full cycle. You may also wish to add a sludge dryer to your system. A dryer accepts filter press cake and dries it further to provide up to a 4:1 sludge reduction. (for more information on sludge dryers click the following link: www.metchem.com/sludge_dryer.htm

Tuesday, November 5, 2013

how to rinse with less water!

We all know it's common to find three out of four tanks devoted to rinsing. This step is necessary to:

Stop any action of a chemical solution.
Prevent the contamination of a subsequent process.
Prevent chemical staining of the work.

Good rinsing with small amounts of water has always the goal, but in today's regulation dominated world. Reducing water lessens the load on waste treatment systems and makes recovery more practical.

The purpose of counter-flowing rinses is just to conserve water. By increasing from one to two rinses, you can same 20 to 100 times the water.

If you want to learn more about Rinsing with Less Water read this article >>