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Water Management Techbook 2018

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46 | April 2018 | hartenergy.com WATER MANAGEMENT: CASE STUDIES K aizen Fluid Systems has combined modern technologies to create an electromechanical water recycling system. An electromechani- cal system converts extracted solids, liquids and/ or gases into useful commodities, virtually elim- inating the need for any type of disposal. The process removes or destroys all chemicals, silts, clays, chlorides, bacteria, fungi and parasites, all of which are total dissolved solids (TDS) and total suspended solids (TSS). The system returns pure, clean and clear water that is very close to distilled quality, which may be used for many additional purposes. A producer in the oil and gas industry approached Kaizen asking for a solution to purify the mass vol- umes of its produced and flowback water. The pro- ducer had worked previously with at least 16 water management companies without success in search of not only an economical solution but one that would allow it to maintain compliance with all state and Environmental Protection Agency (EPA) guidelines. The solution for the producer also would need to reduce and/or eliminate the costly expense of storage and transporting the water for disposal. The producer's corporate mandate was to procure a system whereby it would have the option to use the clean water for fracturing or drilling operations as needed, and either discharge or evaporate the bal- ance into the environment well within current and proposed state and EPA guidelines. To meet state and EPA guidelines, the water needed to be free of chemicals, metals, salts and virtually all TDS and TSS. Solids extracted needed to meet state and EPA guidelines for disposal or reuse, and the operator needed to ensure naturally occurring radioactive materials concentrations remained within guidelines for conventional disposal wells. Kaizen had a system in place for other producers that delivered results that were significantly lower than the EPA and state guidelines. After further dis- cussions with the operator, Kaizen agreed to perform a site visit to evaluate the operator's specific needs, pull produced water samples and complete the lab- oratory analysis to determine the best practice to meet the requirements. The producer's water sample had a TDS of 318,000 mg/l, a TSS of 297 mg/l, a turbidity of 226 mg/l, a pH of 4.4 mg/l with barium at 11,600 mg/l, iron at 102 mg/l, magnesium at 1,820 mg/l, strontium at 7,270 mg/l and zinc at 6.7 mg/l. All other constituents were within reasonable concentrations for produced water. Kaizen determined that to provide water pure enough for discharge into the environment while complying with the state and EPA guidelines, it would process the water in a systematic order using nine of its portfolio technologies. By following a systematic procedure, Kaizen extracted the solids, which are all benign and usable and therefore have no disposal costs. This procedure included destroy- ing all chemicals and changing the ionic metals back into their oxide form, thus rendering them benign. Then, all of the chlorides were extracted from the brine stream in either a concentrated heavy brine form for drilling operations or as high-quality dry salts ready for other commercial or industrial use. The process resulted in pure water that was near- Water recycling system replaces disposal with reuse in the water chain. A New Approach to Reuse By Sandy McDonald Kaizen Fluid Systems The process resulted in pure water that was near-distilled water quality and was ideal for fracturing, drilling use or discharge into the environment without any worry of discharge violations.

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