Wastewater Treatment using a Body Feed

Why is it good to keep a Low Total Suspended Solids (TSS) It seems counter-intuitive that wastewater with low Total Suspended Solids (TSS) is more difficult to treat than wastewater with higher suspended solids. However, this statement is very true.  When the Total Suspended Solids (TSS) are low, it may be difficult or impossible to form floc. Forming floc is necessary to trap and encapsulate suspended solids and other impurities. By adding bentonite clay, as an aid to forming floc, the newly formed clay flocs act like sponges to adsorb solids, metals and other contaminates. Knowing If a Body Feed ... » Read More

Wastewater Treatment for Small Quantity Generators

Traditional Treatment vs. Clay-Based Treatment If you are generating low volumes of wastewater, 1 to 30 gallons per minute consider using clay-based treatment over using traditional treatment chemical treatment for coagulation-flocculation. What’s the difference? When using clay-based treatment the coagulants and flocculants are pre-blended in dry form with sodium-based bentonite clay. The blend is packaged in easy to store and easy to handle 50 pound bags. The blend is typically dispensed from a dry feed hopper into a wastewater mix tank. With traditional chemicals, the coagulant and flocculants are stored in liquid form. Storing liquid chemicals requires a containment area ... » Read More

Bentonite Wastewater Treatment: Sodium Bentonite vs Calcium Bentonite.

Bentonite Wastewater Treatment All Bentonite clay used in wastewater treatment is not the same. There is sodium bentonite and there is calcium bentonite. What’s the difference? Bentonite clay found in many places around the world is mostly calcium bentonite. Calcium bentonite is significantly less efficient for wastewater treatment. The reason that sodium bentonite is more effective than calcium bentonite is due to two things, the surface area and to the charge. The surface area of sodium bentonite clay is larger than Calcium bentonite giving it a significant advantage for adsorbing oils, grease, and metals. This also provides better encapsulation of ... » Read More

Waste Water Treatment for Ink, Dye, and Paint Waste Streams

  Wastewater Treatment Wastewater streams containing ink and dye do not treat well by traditional coagulation and flocculation and generally will not treat at all using a biological process. However, these wastewater streams can be treated using a blend of sodium bentonite clay mixed with a coagulant and a flocculent. The bentonite clay entraps and removes the dye, ink, and paint. Jar testing of paint, dye and ink waste streams makes a great demonstration of the ability to remove these compounds. The floc takes on the exact same color as the dye, ink or paint and settles to the bottom ... » Read More

Using a Bentonite Clay Body Feed

Bentonite Clay Body Feed A body feed, such as bentonite clay, can be added to waste water when it is difficult to form an adequate floc. Poor floc formation can occur when the waste water is low in suspended solids.    Without proper formation of floc particles, the undesirable constituents of the waste water such as solids, oil, grease, heavy metals and color are not removed as desired. A typical body feed is bentonite clay. A bentonite body feed will add solids and assist in the formation of floc particles. The floc particles will attach to solids, oil, grease and heavy ... » Read More

Sludge De-Watering, Gravity filtration vs Vacuum Assist Filtration

Gravity filtration vs Vacuum Assist Filtration A standard waste water sludge de-watering box uses gravity to separate the water from the solids by allowing the water to drain through the bottom screen leaving the solids on the filter media.    Once dry the solids are removed for disposal and the de-watering process is started over. You can also pull a vacuum on the same sludge de-watering box by attaching an Air Operated Diaphragm (AOD) pump on the drain line. This is called vacuum assist filtration. This will improve the speed of de-watering and will help to decrease the drying time. When ... » Read More

Clay-Based Treatment Units – Rent Before You Buy

Uncertain if a clay-based waste water treatment system will meet your expectations? Rent a Clay-based Treatment Unit Wilson offers rental units for clay based waste water treatment. The rental units are basic manual units on a small scale. Our rental units are built for flow rates of 7 to 10 gallons per minute and have a small footprint. They fit on a 5ft by 10ft utility trailer.   They can be left on the trailer during the rental period or placed indoors or out. Ideal for trail runs and pilot studies. Call us toll-free at 1-800-469-0799 for availability.

Dissolved Air Flotation vs Gravity Clarifier

Whether you are using a Dissolved Air Flotation (DAF) clarifier or a traditional gravity clarifier, wastewater contaminants such as suspended solids, oil and grease must be chemically flocculated in order for either system to remove them. The issue becomes: do I wait for the floc to settle to the bottom of the clarifier by gravity or do I float it to the top by injecting dissolved air in a DAF unit? If your floc is buoyant or slow to settle there is no question that a DAF is the better choice. Of course, you can always add what is called ... » Read More

Dissolved Air Flotation (DAF)

What is a DAF? DAF stands for Dissolved Air Flotation. A DAF unit is a type of clarifier.  But instead of gravity settling as in a traditional clarifier the DAF uses microscopic bubbles that attach to the floc and cause it to float. The standard DAF will have a surface rake that collects the floating floc from the floatation chamber into a sludge holding tank. From the sludge holding tank the sludge can be de-watered in a de-watering box, filter press or belt press. The treated water is often of sufficient quality to be discharged directly from the DAF to ... » Read More

Removing Recalcitrant COD

What is COD? COD is Chemical Oxygen Demand and is a common analytical tool to measure the strength of industrial waste water. When COD is not reduced by common industrial waste water treatment methods it is often called recalcitrant COD. Example of COD using Fenton’s Reagent An example would be industrial waste water containing Phenol. Phenol is toxic to most microorganisms and is difficult to remove. One way to remove this recalcitrant compound is by chemical oxidation using Fenton’s Reagent. Fenton’s reagent is a powerful oxidizer that is generated when Hydrogen Peroxide is in the presence of an iron catalyst. ... » Read More