Produced Water Treatment

The chemical treatment assembly is comprised of a baffled mixer frac chassis. The tank consists of three separate chambers with an enclosed equipment skid with controls mounted at the front. Below is a bulleted break down of the equipment. 

• 415 BBL Mixer Frac Chassis: A custom-built 415 BBL frac chassis modified for the equipment listed below. 

• Lime Slurry Storage: 143 BBL minimum lime storage chamber will be provided. The lime storage chamber will have a 10 hp dedicated mixer to keep the hydrated lime in suspension. The chamber is sized to receive standard bulk loads of hydrate lime slurry (4,400 gallons) while maintaining sufficient volume for ongoing operations. 
• Primary Reaction Chamber: 200 BBL primary reaction chamber equipped with two 10 hp mixers and equipment necessary to maintain target pH for iron and scalant precipitation. 
• pH Neutralization Chamber: 25 BBL neutralization chamber with mixer and the necessary equipment to bring the pH back to neutral or desired target pH. This chamber is also equipped for biocide and oxygen scavenger injection before impoundment of recycling water. 
• Equipment Skid: The equipment skid is integrated into the front end of the mixer frac tank chassis.

The WSI R-75OG DGF is a rectangular body unit with two flotation zones. Each zone can separately treat different processes. The body is built and fabricated from 304L SS. Below is a list of several key benefits with this design. 

• Stainless Steel Tank Design: The tank body, will be constructed from 3/16” stainless steel plate. The body is constructed with three independent cone bottom collection hoppers with the pneumatically operated valve connection point. All process chambers of the R-75OG DGF unit are fabricated into the system. This includes: Two DGF floatation zones, scum collection hoppers with a rail system, and effluent weir chamber. 
• DGF Pump: The KTM-65S2 pump is a high flow micro-bubble generator made from 316 stainless steel. The KTM-65S2 is a highly precise pumping mechanism that generates microbubbles by utilizing two hydro-dynamic principles: negative pressure sucking both nitrogen and water simultaneously from each port; nitrogen effectively mixed into the water; which properly produces pressurized nitrogen-enriched discharge. This eliminates the need for a large saturation tank. 90% of the microbubbles formed are less than 10 µm in diameter. The R-75OG DGF uses a patented nitrogen system to reduce oxygen in the process. 

• Saturation Tank: The saturation tank is constructed from 304L Schedule 10 pipe and is designed and fabricated in such a way that coarse bubbles from the nitrogen enriching process are collected and discharge into the DGF effluent chamber. This prevents coarse bubbles from disrupting the sludge blanket that is formed in the floatation zone. 
• Micro Bubble Distribution: The Microbubbles generated from the KTM-65S2 pump system are dispersed into the DGF by six precisely located white water injectors. These injectors are constructed out of 1.5” schedule 10 304 stainless steel pipe. These pipes run the width of the DGF and have a proprietary grooved design opening for proper distribution and enhanced flocculation. Each injector has a diaphragm valve that will allow the operator to dial in the precise distribution of white water. 
• Recycled Process water: The recycled process water used for the microbubble generation process comes from the same zone where the effluent weirs are connected. This ensures that the cleanest quality of process water is being recycled into the system. 
• Surface Skimmer System: The skimmer system is comprised of two parallel lengths of ultraviolet stabilized glass reinforced Nylon 6/6 chain with stainless steel paddles and buna rubber wiper assemblies. The skimmer system is powered by a helical worm gear motor that is VFD controlled. This allows the operator to have precise control over the speed at which the paddle skims across the top layer of the DGF. This is important as to not disrupt the gentle nature of the sludge blanket that is formed in the floatation zone of the DGF. The paddle is the width of the DGF body and gently pushes the skimmed sludge up a stainless steel beach and into a collection hopper. The ends of the stainless steel paddles are supported by UHMW blocks which ride on internal rails. This allows the paddles to interface the sludge blanket at a consistent elevation along the length of the DGF and gently collect the thickened sludge, pushing it into the sludge hopper.