The BGR surfactant system can facilitate the penetration of atmospheric oxygen and microbial suspensions through dense clay soils.

​bacteria that have a voracious appetite for long chain hydrocarbons and other toxic organics. Pseudomonads are a highly resilient, family of facultative bacteria that degrade hydrocarbons even in low oxygen environments.

BGR's patent-pending process allows pseudomonas cultures to multiply to high densities and be transported in a live vegetative state for cultivation at a contaminated soil site. The BGR microbes are selected from naturally occurring soil strains collected at oil spills and from hydrocarbon-contaminated soil. BGR bacterial bioaugmentation is particularly useful for fresh spill sites where natural populations of HC-degrading bacteria may take months to evolve or at sites where environmental conditions have proven inhibitory for native strains to thrive.

The Chemistry:

Our surfactant is a detergent that lowers the surface tension between a liquid and a solid and solubilizes a hydrocarbon into the aqueous phase.

Part of BGR’s unique offering is its effective integration of biology and chemistry. The proprietary surfactant not only quickly and effectively distributes BGR’s treatment solution into a variety of different soils but it is microbe friendly. The BGR surfactant system has an exceptional ability to penetrate and clean where agitation is restricted.

It is particularly effective at treating and solubilizing long chain, polyaromatic or weathered hydrocarbons using a one-time application. The surfactant system has an excellent eco profile. It contains no phosphates or alkyl phenol ethoxylates (APEs), is VOC exempt with a vapor pressure < 0.1 mm Hg @ 20°C, and has a neutral pH. It has a 5-year shelf life but is readily biodegradable in soil within eight days under aerobic conditions.

BGR's Soil Processing System

A spray system attachment, hydraulic baffle, variable speed conveyor, and mix trailer complete the SPS. This SPS is designed to pulverize hard materials or materials of a higher moisture content. With the spray system attachment, the SPS will pulverize contaminated material, while applying the microbe surfactant solution before and/or after the contaminated material is pulverized. The spray system attachment consists of 15 independently controlled spray nozzles. Use of the spray system attachment requires the liquid enter the system under pressure, as pumped by a 5 HP centrifugal pump from a mixing trailer. Unique in the industry, the SPS can be mobilized rapidly and process up to 150 tons of soil per hour. For small projects, the solution is applied with portable manual sprayers.

Bulldog Green Remediation, Inc. (BGR) is a California corporation and federally qualified Small Business; Contractor's License No.: 1021126 

safe. sustainable. cost-effective.

The Science - Helping Nature Help Itself

What sets BGR’s technology apart from the myriad of other bioremediation technologies? It’s our integration of three key elements - biology, chemistry and engineering - that deliver a permanent
​solution using a one-time application at a lower cost than conventional technologies. This innovative, patent-pending process is unique to bioremediation.

Bulldog Green Remediation, Inc.'s proprietary bioremediation technology provides an alternative for cleanup of hydrocarbon contaminated soil using an efficient,  sustainable bioremediation technology that is cost-effective and environmentally safe. The technology is a simple, effective on-site treatment technology that allows soil reuse and eliminates emissions and liability associated with the traditional off-site transportation and disposal approach.

For large volume projects, contaminated soil is excavated using standard equipment and then fed into the SPS where it is pulverized, and sprayed to ensure complete contact of the solution with the contaminated soil. The SPS conveyor then moves the treated soil to a liner where it is placed into windrows or piles 3-12 feet high. Analysis using approved sampling procedures is performed to confirm biodegradation. Treatment time typically ranges from 30 to 90 days.

The Biology:
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Certain strains of bacteria have an extraordinary ability to breakdown petroleum hydrocarbon contaminants (C6/BTEX through C50) by degrading them to water and CO2. Indigenous bacteria exists within a complex community of microbes including fungi and a wide range of bacteria, some of which are more specialized for the biodegradation of hydrocarbon contaminants. Native bacteria that normally would break down vegetable oils and animal fats may have difficulty assimilating longer chain hydrocarbons because the bacteria are inhibited or cannot survive when exposed to adverse environmental conditions such as highly contaminated soil.

BGR uses a custom blend of microbes including multiple strains of selected hydrocarbon-degrading pseudomonas

THE ENGINEERING:

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In addition to developing a proprietary blend of microbes and surfactant, BGR further distinguishes itself by offering its own Soil Processing System (SPS). The SPS is a custom, purpose-built machine. The microbe and surfactant liquid solution is applied to contaminated soil as the soil is processed ex-situ through BGR’s custom-designed SPS. The SPS includes a 33.5 inch mill head, complete with 24 rotating hammers and 11 offset spring-loaded upper knives. This design includes a tall pedestal with a round top and a vertical plate to prevent material from sticking. The SPS is equipped with a 4.4 CL Turbo Charged, after cooled Caterpillar/Perkins Diesel Tier lV Final engine. Soil is loaded into a 5.5 cubic yard capacity hopper, covered by a grizzly with 7.5 inch bar spacing and a cleated conveyor belt with armored lacing.