Wastewater organic contaminated

Bouwer EJ, McCarty PL, Bouwer H, et al. 1984. Organic contaminant behavior during rapid infiltration of secondary wastewater at the Phoenix 23rd Avenue project. Water Res 18 463-472. 

Rhizodegradation Soils, sediments, land application of wastewater Organic compounds (TPH, PAHs, BTEX, pesticides, chlorinated solvents, PCBs) Phenolics releasers (mulberry, apple, osage orange) Grasses with fibrous roots (rye, fescue, Bermuda) for contaminants 0-3 ft deep Phreatophyte trees for 0-10 ft Aquatic plants for sediments... 

Ecoclear A continuous process for destroying organic contaminants in wastewater by treatment with ozone in the presence of a proprietary catalyst. Developed in 1995 by Eco Purification Systems, The Netherlands. 

A wide range of analytical techniques have been developed in order to identify the organic contaminants often present at trace levels in complex environmental samples such as wastewaters. These techniques mainly use gas chromatography (GC) and liquid chromatography (LC). 

Another pre-treatment often used to prevent biological degradation of organic contaminants in water is acidification with sulfuric acid to pH <3 [4], The change in concentrations of NPEO, AEOs and PEGs in spiked groundwater (500 p,gL 1) and in wastewater treatment plant (WWTP) influent preserved by addition of formaline (1 and 3%, v/v) and by acidification to pH 3 with sulfuric acid and kept for 30 days at 4°C are shown in Table 4.4.1. 

Smer-Lauridsen, F. and Kjlholt, J. 2000, Identification of selected hydrophobic organic contaminants in wastewater with semipermeable membrane devices (SPMDs). Water Res. 34 3478—3482. 

APHA. 1985b. Organic contaminants Gas chromatographic/mass spectrophotometric method-method 516. In Standard methods for the examination of water and wastewater. 16th ed. American Public Health Association, Washington, DC, 612-619. 

Valls M, Bayona JM, Albaiges J. 1990. Broad spectrum analysis of ionic and non-ionic organic contaminants in urban wastewaters and coastal receiving aquatic systems. Intern J Environ Anal Chem 39(4) 329-348. 

Glycerine can also be purified by the use of ion-exchange resins to remove sodium chloride salt, followed by evaporation of the water. This process puts additional salts into the wastewater but results in less organic contamination. 

Air strippers are ex situ devices used to physically transfer volatile organic contaminants (VOCs) from groundwater, surface water, or wastewater to air. Contaminants are not destroyed by air stripping, but once they are transferred to the airstream, they may be destroyed by oxidation or incineration, or removed using activated carbon absorption. 

Laboratory research has demonstrated that the liquid corona technology can treat a variety of wastewater contaminants such as carbon tetrachloride, metal ion chelators, and industrial dyes. The technology successfully reduced initial organic contaminant concentrations (by more than 99%) for the following contaminants after exposure to corona discharge trichloroethylene (TCE), ethylene-diamine-tetraacetic acid (EDTA), and benzoic acid. Additionally, liquid corona has demonstrated removal success with carbon tetrachloride, pentachlorophenol, and perchloroethylene. 

The BIOX biotreater is a commercially available, ex situ technology for the treatment of wastewater, groundwater, and surface water containing organic contaminants. The BIOX biotreater is a biological submerged, fixed-film reactor capable of aerobic, anoxic, or anaerobic operation. 

Microcat (meaning microbial catalysts) products constitute a bioremediation technology used on wastewaters, sludges, and soils. Microcat products include specialized microbial cultures, nutrients, and surfactants to remediate organic contaminants such as petroleum hydrocarbons. The products used in site remediation include ... 

Solaqua is a patented, ex situ process for the removal of organic contaminants from wastewater or groundwater. The technology uses ferric oxalate and hydrogen peroxide in the presence of light to produce hydroxyl radicals, which destroy organic contaminants such as aromatic hydrocarbons, phenols, alkanes, aUcynes, ethers, and ketones. Solaqua is not yet commercially available. 

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