Field Testing Improves Citrus Plant Biological Treatment

2002 ◽  
Author(s):  
Jim Ashby ◽  
Tony Sobkowicz
Keyword(s):  
Biological Treatment ◽  
Treatment Process ◽  
Field Testing ◽  
Treatment System ◽  
Cleaning Agents ◽  
Treated Effluent ◽  
Fruit Processing ◽  
New Treatment ◽  
Economical Process ◽  
Biological Treatment System

Wastewater from citrus processing contains high levels of sugars, suspended solids, and caustic cleaning agents. Biological treatment is the only economical process for removing and neutralizing all of these contaminants, and the activated sludge process is the workhorse of the biological treatment stable. The biological treatment system must produce a treated effluent of the highest quality, regardless of the wild variation in flow and composition of the influent. Problems in the treatment process can almost always be traced to either a wastewater loading that is higher than the system can tolerate, or a failure to maintain and operate the treatment system to realize its treatment potential. A thorough review of the operational and loading characteristics of the system will determine whether excessive loading or inadequate treatment system is responsible for the system failure. When the problem has been identified, it can be resolved in one of three ways: □ A new treatment system of greater capacity can be installed to replace the inadequate system. □ The wastewater loading, hydraulic and organic, can be reduced through changes in fruit processing practices. □ Changes in the existing treatment system (equipment or operational) can be identified to increase its capacity. Paper published with permission.

Biological Dehalogenation of Kraft Mill Wastewaters

1991 ◽  
Vol 24 (3-4) ◽  
pp. 287-293 ◽  
Author(s):  
Curtis W. Bryant ◽  
William A. Barkley
Keyword(s):  
Field Test ◽  
Biological Treatment ◽  
Laboratory Tests ◽  
Treatment Process ◽  
Treatment System ◽  
Process Improvements ◽  
Aerobic Process ◽  
Kraft Mill ◽  
Inorganic Chloride ◽  
Biological Treatment System

A single-stage aerobic biological treatment system was developed specifically to convert organically bound chlorine to inorganic chloride. In initial laboratory tests, greater than 90% reduction of AOX was achieved in synthetic dichlorophenol, commercial pentachlorophenol, and combined kraft wastewaters, and less than a week was required for startup/acclimation. A six-month field test of the process on a pentachlorophenol wastewater was very successful under highly variable influent conditions. No chlorinated byproducts were detected, and measurements strongly indicated that dehalogenation had occurred. Recent experiments found Cl/El wastewater to be most easily treatable by the aerobic process, followed by combined lagoon influent, El wastewater, and finally lagoon effluent. However, results have indicated that application of the treatment process to kraft AOX reduction can become feasible only if further process improvements can be defined.

Chemical Solubilization of Particulate Organics as a Pretreatment Approach

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2289-2292 ◽  
Author(s):  
S. R. Mukherjee ◽  
A. D. Levine
Keyword(s):  
Enzymatic Hydrolysis ◽  
Alkaline Hydrolysis ◽  
Industrial Waste ◽  
Biological Treatment ◽  
Organic Waste ◽  
Experimental Studies ◽  
Organic Content ◽  
Treatment System ◽  
Chemical Pretreatment ◽  
Biological Treatment System

The first step degradation of particulate organic waste is solubilization. In a bioreactor, solubilization occurs due to enzymatic hydrolysis. As an alternative, the use of chemical solubilization methods may provide a means of more efficiently solubilizing the particulates to a form that can be readily utilized by a biological treatment system. In this study, an industrial waste high in particulate organic content was used as a test substrate. The chemical pretreatment methods tested were alkaline hydrolysis, oxidation, and a mixture of hydrolysis and oxidation. Experimental studies to elucidate the effects of chemical pretreatment on the characteristics of particulate organics are discussed in this paper.

Development of an advanced biological treatment system applied to the removal of nitrogen and phosphorus using the sludge ceramics

2005 ◽  
Vol 39 (20) ◽  
pp. 4859-4868 ◽  
Author(s):  
Yufang Yang ◽  
Yuhei Inamori ◽  
Hitoshi Ojima ◽  
Hiroki Machii ◽  
Yasutoshi Shimizu
Keyword(s):  
Biological Treatment ◽  
Treatment System ◽  
Nitrogen And Phosphorus ◽  
Biological Treatment System
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