.: the 'DAAB'

What is the DAAB?

The Deployable Aerobic Aqueous Bioreactor (DAAB) is a new bioreactor designed to treat both municipal and industrial wastewaters. It is easy to deploy and operate and it only produces very small traces of sludge and odor. The DAAB is fully functional and it meets EPA release requirements in less than twenty-four hours.

Its small, flexible foot-print allows it to be set up as a self-contained, stand-alone unit, or incorporated into a 400 sq. ft. space, with a low energy requirement of less than 10 kW/h a day.

In addition to military applications, the DAAB can provide for the sanitation and environmental cleanup needs of communities affected by natural disasters.

Contents

> What is the DAAB?
> How the DAAB Works
> Versus Competitors
> The Results

How the DAAB Works

The system uses bio-augmentation to optimize the growth of healthy biofilms. Its design optimizes the metabolism of selected wild type micro-organisms by increasing their collisions with biodegradable waste products.

The system's micro-bubble aeration provides an oxygen-saturated environment to maximize aerobic metabolism of the micro-organisms. Moreover, it utilizes gravity to further reduce operational costs.

What Separates DAAB from Other Portable Wastewater Treatment Units?

+ DAAB generates very little odor; other systems are placed in a container and equipped with aerosols to suppress odor.
+ DAAB generates approximately 1% of sludge, while comparable units generate between 10-40%.
+ DAAB can be initiated to produce effluent acceptable to EPA standards within 24 hours following setup; comparable units require 7-30 days to produce an effluent acceptable to EPA standards.
+ DAAB is a fixed film reactor that is capable of doing complete digestion, unlike activated sludge systems that only do partial digestion and rely on settling to remove residual organic matter.
+ DAAB operates on approximately 1/5th the power required to operate units with comparable treatment capacities.

The Results

Treatment Results of Sanitary Wastewater
Influent Wastewater* Treated Effluent*
BOD5 = 152.2 mg/L BOD5 = 23.0 mg/L
TSS = 269.0 mg/L TSS = 15.9 mg/L
pH = 8.3 pH = 7.9
Temp = 21.7°C Temp = 21.5°C
Eight-Hour Hydraulic Retention
*Average Values

Industrial Wastewater:

+ The DAAB system* has undergone extensive testing to establish its ability to degrade numerous VOCs within 24 hours of exposure.
+ Ability of the microorganisms to degrade VOCs is enhanced when provided with the DAAB environment*.
+ In the DAAB environment, the microorganisms are resistant to VOC concentrations in excess of 80 ppm.

*Patent Pending


Industrial Wastewater
Volatile Organic Compounds MDL Reporting Limit Influent Average Effluent Average
1,2,4-Trimethylbenzene 0.28 0.94 18.74 <0.94
1,3,5-Trimethylbenzene 0.26 0.90 3.16 <0.90
2-Chlorotoluene 0.28 0.95 1.184 <0.95
Chloroethane 0.29 1.00 2.65 <1.00
Chloroform 0.19 0.64 1.76 1.176
cis-1,2-Dichloroethane 0.21 0.71 1.478 <0.71
m,p-Xylene 0.22 0.75 0.8925 <0.75
Methylene Chloride 1.98 5.00 193.264 19.862
Naphtalene 0.24 0.81 135.848 1.026
n-Butylbenzene 0.41 1.39 24.102 1.6
n-Propylbenzene 0.28 0.96 1.135 <0.96
o-Xylene 0.19 0.66 1.318 <0.66
p-Isopropyltoluene 0.35 1.21 2.352 <1.21
sec-Butylbenzene 0.36 1.23 1.484 <1.23
Toluene 0.21 0.71 1.116 <0.71

Treatment Results of Industrial Wastewater
Influent Wastewater* Treated Effluent*
BOD5 = 92.20 mg/L BOD5 = 42.2 mg/L
TSS = 16.0 mg/L TSS = 10.6 mg/L
pH = 7.9 pH = 7.4
Temp = 24.7°C Temp = 25.0°C
Ten-Hour Hydraulic Retention
*Average Values

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