Wastewater toxicity

Table 8. Industrial Wastewater Toxicity Bioassay Test Results Concentration in Wastewater ...

On-line or on-site toxicity evaluation is a great challenge due to the complexity of measuring the different impacts (from trouble from to death of organisms) of several substances, the effect of which is often increased by synergy. Furthermore for wastewater, toxicity monitoring must be implemented in several locations raw sewer, treatment plant or discharge point. Toxicity can be eval-... 

Havash, J. and Oster, J., 1998, Is Your Wastewater Toxic to the Municipal Treatment Plant Pollution Engineering, March, pp. 52-54. 

Measuring the increased oxygen resulting from the inhibition of respiration allows one to register the toxicity of wastewater. Toxic substances cause a reduction of the metabolic activity of the microorganisms used in the biosensor, resulting in a decrease of respiration. 

Rawlings GD, Samfield M. 1979. Textile plant wastewater toxicity. Environmental Science and Technology 13 160-164. 

Singh, K.P., Mohan, D., Sinha, S., Dalwani, R., 2004. Impact assessment of treated/untreated wastewater toxicants discharged by sewage treatment plants on health, agricultural, and environmental quality in the wastewater disposal area. Chemosphere 55, 227-255. 

Ren, S. and Frymier, P.D. (2003) Use of multidimensional scaling in the selection of wastewater toxicity test battery components, Water Research 37 (7), 1655-1661. 

To be complete, toxicity hazard assessment should consider the specific effects caused by wastewaters to a receiving stream. As applied thus far, the pT-method only provides a quantitative measurement of wastewater toxicity. 

Farre, M., M.J. Garcia, L. Tirapu, A. Ginebreda, and D. Barcelo. 2001. Wastewater toxicity screening of non-ionic surfactants by Toxalert and Microtox bioluminescence inhibition assays. Anal. Chim. Acta 427 181-189. 

Manilal YB, Haridas A, Alexander R, Surrender GD. Photocatalytic treatment of toxic organics in wastewater toxicity of photodegradation products. Water Res 1992 26 1035-1038. 

Burrows WD, Chyrek RH, Noss Cl, et al. 1984. Treatment for removal of munition chemicals from Army industrial wastewaters. Toxic Hazard Wastes Proc Mid-Atl Ind Waste Conf 16th, 331-342. 

Wastewater Toxicity Vibrio fischeri Selenastrum Capricomotum Daphnia magna BIOTOX Daphtoxkit FTM magna AlgalToxKit TOC 19... 

Treatment of Electroplating Wastewater. Toxic cyanide ions are the major pollutant in electroplating wastewater. They must be removed before discharge of the wastewater. As shown in Eqs. (3) and (4), ozone can oxidize free cyanide ion rapidly to less toxic cyanate ion, which then slowly hydrolyzes to nitrogen and ammonia. The reaction equations are as follows " ... 

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