Backed by Thousands of Wastewater Treatability Tests & Laboratory Results

Heavy-metal removal is one of RNR's primary industrial wastewater treatment applications. Depending on wastewater chemistry, RNR treatment can substantially reduce chromium, copper, lead, nickel, zinc, aluminum, iron, barium, cadmium and other metals. In the laboratory example shown, chromium was reduced from 12.35 mg/L to 0.015 mg/L, copper from 18.63 mg/L to 0.025 mg/L, lead from 5.68 mg/L to <0.01 mg/L and zinc from 128.8 mg/L to 0.016 mg/L.

RNR treatment coagulates and flocculates suspended material so it can be rapidly separated from the treated water. In the laboratory example shown, Total Suspended Solids (TSS) were reduced from 72,500 mg/L to <1 mg/L.

RNR also treats industrial wastewater where Total Dissolved Solids (TDS) and dissolved contaminants are treatment concerns. Performance depends heavily on the specific dissolved constituents and wastewater chemistry, which is why RNR evaluates the customer's actual wastewater before recommending treatment.

RNR treatment can address suitable industrial wastewater containing oil, grease and emulsified contaminants. In the laboratory example shown, total oil and grease were reduced from 1,060 mg/L to as low as 3 mg/L.

The same laboratory evaluation demonstrated substantial reductions across numerous other wastewater parameters. Chemical Oxygen Demand (COD) was reduced from >17,000 mg/L to <10 mg/L, while total solids were reduced from 77,200 mg/L to as low as 1,510 mg/L.

RNR treatment is designed around more than simply forming floc. What happens to that floc afterward—including pumping, separation, filtration, pressing and dewatering—can be just as important. RNR develops dry, clay-based treatment chemistry around the customer's wastewater, existing equipment and treatment objectives.

RNR's dry clay-based chemistry can produce a strong, cohesive floc designed to withstand handling and agitation without shredding as readily as the soft, sticky floc associated with some liquid-polymer treatment programs. The resulting solids can release water readily during filtration and mechanical dewatering, producing compactable solids in suitable applications.

Sticky polymer-treated solids can coat or blind filter media, filter bags and filter presses, reducing filtration efficiency and increasing maintenance. RNR's clay-based treatment can be substantially less prone to this type of filter blinding in suitable applications, potentially simplifying filtration, reducing consumables and improving dewatering.

Different wastewater systems are designed to separate solids differently. RNR can develop treatment chemistry and operating conditions for applications where the treated floc needs to float or where it needs to settle, allowing the chemistry to work with many existing treatment and dewatering systems.

RNR treatment can be integrated into a wide range of existing wastewater systems and separation equipment, including settling tanks, flotation systems, filter presses, filter bags, centrifuges, dewatering boxes, batch tanks and continuous-flow systems. Treatment can range from simple filtration methods to high-volume industrial installations processing hundreds of gallons per minute.

Where sample testing confirms compatibility, RNR can often develop one dry-blend treatment chemistry capable of treating multiple wastewater streams. This may allow compatible waste streams to be combined before treatment, simplifying chemical management and making better use of existing wastewater storage capacity.

Effective industrial wastewater treatment does not automatically require expensive new equipment. RNR's treatment approach can be used in simple batch applications or incorporated into larger automated and continuous-flow systems. The objective is to determine the chemistry first, then use the simplest practical treatment and separation process appropriate for the customer's wastewater, volume and existing infrastructure.

RNR can help customers determine whether it makes more economic sense to solidify an entire liquid waste stream or first treat the wastewater, separate recoverable water and concentrate the remaining solids. The separated solids can then be filtered, pressed, dewatered, solidified or otherwise managed. This can substantially change hauling and disposal economics when a facility is otherwise paying to transport large quantities of water.

Some of RNR's most valuable applications begin with industrial wastewater that has been difficult to treat using conventional approaches. RNR has evaluated wastewater involving heavy metals, suspended and dissolved contaminants, oil and grease, emulsions, dyes, paint and coatings, process wastewater, wash water, sludge, leachate and other challenging waste streams. Because every wastewater stream is different, RNR tests the customer's actual water before recommending a treatment program.

Prospective RNR wastewater-treatment customers can submit a representative wastewater sample for a FREE treatment evaluation. RNR determines appropriate treatment chemistry and dosage and can provide before-and-after laboratory results documenting how treatment performed on the customer's actual wastewater.

RNR can also provide FREE product samples for customer trials, allowing facilities to evaluate treatment performance before full-scale implementation. Testing can help determine contaminant reduction, recommended chemistry and dosage, separation characteristics, filtration and dewatering performance, compatibility with existing equipment and projected treatment cost.

RNR's objective is to give customers meaningful treatment information before they commit to a full-scale program. Sample testing can establish expected treatment performance, dosage requirements and projected treatment economics for the customer's specific waste stream—so the decision can be based on actual wastewater results rather than assumptions.

If your facility has difficult industrial wastewater, high treatment costs, odor concerns, poor solids separation or excessive sludge and disposal costs, send RNR a representative sample. We can evaluate the wastewater and determine whether RNR treatment offers a practical and economical solution.

Call RNR: 818-606-1673 | rob@rnr-enviro.com