Tag Archives: hydrogen sulfide removal

Mobile Produced Water Treatment using MIOX Mixed Oxidant Solution (MOS)

MIOX BlackwaterMIOX recently expanded its product line by developing the Blackwater mobile water treatment system for oil and gas water management. MIOX is the leader in water treatment chemical and sodium hypochlorite generators. MIOX’s patented Mixed Oxidant Solution (MOS) electrochemical technology eliminates bacteria in produced water and frac flowback water.

MIOX water treatment technology also helps with iron removal or iron oxidation and hydrogen sulfide removal.  Our on-site chemical generators are capable of high treatment rates so you can recycle the most oil and gas water per day. Eliminate hydrogen sulfide, treat out SRBs and APBs, reduce iron that causes scale, and reduce chemicals on the road.

 

MIOX oil and gas water treatment offers a safer process at lower cost.

 

Watch our latest Oil & Gas Water Treatment Webinar to learn more about Mixed Oxidant Solution (MOS) applications in the oil and gas market.

 

 

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Reducing Oil & Gas Water Treatment Costs

Calculate Produced

Recycling, reusing or treating produced water does not always have to be expensive.  Most Oil & Gas companies manage more water than they do hydrocarbons.  While MIOX is not a 100% solution to all produced water treatment, frac water treatment and hydrogen sulfide removal needs, it does do the heavy lifting.

On-site chemical generation systems can safely and cost effectively generate disinfection products for oil and gas drilling and produced water treatment and distribution.  Optional mobile units such as Blackwater, generate chemicals on site and on demand using simple reagents, increasing worker and community safety by replacing delivered chemicals at the well or production site.

The MIOX System

Cost effectively provide oxidant on site in order to maintain performance.  The MIOX system uses salt and electricity to generate a chlorine-based solution that contains other, more powerful, oxidants as well.  The superior mixed oxidant chemistry makes it equally effective at higher pH.  Since oxidants have superior algae-killing properties, additional savings may be realized.

Two main consumables are used to compare costs for chemical generation – salt and electricity.  As a result, the estimated operational costs – and savings – is a combination of the salt cost, electrical cost, and cell replacement costs. Many of our customers have been seeing steady, and in some cases, dramatically increasing cost increases, up to 10% or more per year, for bleach over the past two years.

Cost Factors

Drivers include rising transportation costs and increasing security costs. In contrast, salt and electrical costs have been very stable over the past 5 years, offering a higher degree of confidence in future costs of operating the system; return on Investment is typically 18 – 36 months or less.

During produced and flowback water treatment, oil & gas companies want to avoid dangerous chemicals whenever possible. They also want to remove iron, treat out Hydrogen Sulfide (H2S) and ammonia and they want to eliminate bacteria which can later cause Hydrogen Sulfide (H2S) issues, corrosion, poor well performance, and other problems. MIOX’s Mixed Oxidant helps with all of these issues.  To see the safety improvements for oil & gas, click here.

 

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Hydrogen Sulfide Removal

Common chemical oxidation methods for hydrogen sulfide (H2S), an odor causing chemical formed by the action of anaerobic bacteria in water and wastewater systems include chlorine, hydrogen peroxide and ozone.  Case studies and laboratory studies performed to date show that Mixed Oxidant Solution (MOS) tends to speed reaction rates or drive oxidation reactions to completion compared to sodium hypochlorite.

The oxidation of H2S is a two part reaction in which elemental sulfur (S0 ) is an intermediate before reaching the fully oxidized state as sulfuric acid (H2SO4).  S0 is a solid that must be filtered in municipal applications, so if the reaction cannot be driven to completion with hypochlorite, additional capital equipment must be purchased.   With sufficient dosing, MOS does not require a detention tank, filter system, and head can be maintained from the wells to distribution.

  1. Cl2 + H2S = 2HCl + S0  (reaction may stop here if the hypochlorite dose is not high enough)
  2. S0 + 3Cl2 + 4H2O = 6HCl + H2SO4

The combined reaction is:  H2S + 4Cl2 + 4H2O = 8HCl + H2SO4

WA State Oder Tower Closer

MIOX and odor control in wastewater systems: In 2013, a MIOX MOS Zuni system replaced a bleach caustic chemical program in the trickling filter and scrubber system of a wastewater treatment plant in the state of Washington.   Since its installation, there have been no complaints from nearby neighbors concerning odors from the plant.  The MOS is also used to prevent ponding, or excessive growth of biological material in the media of the filter.  Since the introduction of the Zuni system, which uses only salt and power to generate the Mixed Oxidant Solution (MOS), the operators have ceased using the caustic, providing a both safety and cost advantage.  MIOX MOS was used also used to successfully replace hydrogen peroxide (H2O2) in a sewer collection system, decreasing the H2S concentrations from 15 mg/L to non-detectable.  Because of the distributed nature of the wastewater collection system, using a small OSG system that can be remotely monitored often provides operational flexibility.

 

 

SAMSUNG

MIOX and Advanced Oxidation Processes:  More recently, MOX’s on-site generators were used in combination with UV to produce hydroxyl radicals.  This process is called an Advanced Oxidation Process (AOP) and was used to remove MIB (2-methylisoborneol), an odor causing algal byproduct from the intake water at a large municipal facility in the United States.

 

 

 

 

 

 

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