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Nov 2, 2009 · Whole effluent toxicity and similar toxicity tests integrate interactions among complex mixtures of contaminants. They measure the total toxic effect, regardless of physical and chemical composition. As such, WET tests are a useful tool.
- Peter M. Chapman
- 139
- 2000
- 02 November 2009
Nov 2, 2009 · The general status of whole effluent toxicity (WET) tests is assessed relative to their generally accepted purpose of identifying, characterizing, and eliminating toxic effects of effluents on aquatic resources.
- Peter M. Chapman
- 2000
Whole Effluent Toxicity (WET) testing is an important component of the U.S. Environmental Protection Agency’s (USEPA’s) integrated approach for assessing the potential for toxicity to the nation’s waters.
Some regulatory approaches focus on controlling toxic amounts of individual chemicals known to be present in the effluent. In contrast, WET testing actually measures the po-tential toxicity of all chemicals in a solution.
- Fabricated Metal Products Plant
- Chemical and Allied Products Plant
- Drugs and Medicines Manufacturing Plant
- Miscellaneous Manufacturing Plant
In this plant, aluminum, then manufacture materials for buildings, building materials for houses, and exterior building materials are produced. The manufacturing process of this factory includes a coating process and an alumite process. Effluent from these processes is treated by coagulation-sedimentation . Figure 6 shows the WET results. The chron...
This factory produced pharmaceuticals and pesticides. After pH adjustment, the effluent was treated by an activated sludge process. The results of WET tests showed that this effluent was moderately toxic to all test organisms, especially algae and cladocerans (Fig. 8). Phase I TIEs with the C. dubia reproduction test were conducted (Fig. 9a, b). On...
This factory produced pharmaceutical intermediates. The process effluent was treated by an activated sludge system and then mixed with used cooling water. WET results showed chronic toxicity only on cladocerans (Fig. 10). Phase I TIEs results show that cation/anion exchange and C18 solid extraction treatment removed the toxicity (Fig. 11). In addit...
The process of this factory included an alumite process and plating process. Effluent was treated by neutralization followed by coagulation and sedimentation. The results of WET tests show chronic toxicity on cladocerans (Fig. 12). The concentrations of nickel in the samples were 190 and 179 μg/L in 2012 and 2013 respectively. Therefore, it is susp...
- Takashi Kusui, Yasuyuki Itatsu, Jun Jin
- 2018
Whole effluent toxicity tests may be overprotective (because of their conservative nature, the absence of environmental and ecological processes that could ameliorate exposure, and sensitivity to noncontaminant effects), underprotective (because the most sensitive species cannot be tested, multiple stresses tend to be present in the receiving en...
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Are whole effluent toxicity tests useful?
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Are wet tests useful in identifying toxicity impacts in the environment?
Jan 1, 2000 · Under laboratory settings, whole effluent toxicity (WET) studies are better able to control for environmental variables, determine accurate dose effects, and observe real-time events leading...
