Toxicity identification evaluation on efficiency of chemical effluent treatment

Abstract

Abstract: Acute toxicity tests of the effluents from both inlet and outlet of the treatment system in a chemical plant in Jiangsu Province were conducted with Daphnia magna.The results showed that both effluents were toxic to this species. Toxicity identification evaluation (TIE) was used to identify the key toxicants in the effluent before and after treatment. The results indicated that Cu²⁺ was the key toxicant causing the toxicity of input water, and some metals and polar organics were the coexistent toxicants in the water. The toxicity of output water was caused by some toxic organics, which were easy to be oxidized under acidic conditions. The results also showed that the toxicity removal efficiency reached 77.6% through the treatment process. It could be seen that the effluent treatment process in this plant had a higher efficiency of removing heavy metals, but the removal rate of organic compounds was quite low. It was concluded that the production techniques and the effluent treatment process of this plant were not perfect, and needed to be improved.

Key words: Toxicity identification evaluation (TIE), Daphnia magna, Industrial effluent treatment, Toxicant, Removal efficiency, winter wheat, bundled straw covering, soil thermal-moisture, yield, northwest Loess Plateau

CLC Number:

X171.5

YANG Yi, YU Hongxia, CUI Yuxia, JIN Hongjun, TANG Songlin, ZHOU Chunhong . Toxicity identification evaluation on efficiency of chemical effluent treatment[J]. Chinese Journal of Applied Ecology, 2003, (1): 105-109.

References

[1] Besser J M,et al.1998.Effect of zeolite on toxicity of ammonia in freshwater sediments implications for toxicity identification evaluation procedures.Environ Toxicol Chem,17(11):2310～2317
[2] Boucher A M,et al.1999.Toxicity identification evaluation of metal-contaminated sediments using an artificial pore water containing dissolved organic carbons.Environ Toxicol Chem,18(3):509～518
[3] Burkard LP,Ankley GT.1989. Identifying toxicants: NETA's toxicity-based approach.Environ Sci Technol,23(12):1438～1443
[4] Burkard L P.1991.Identification of nonpolar toxicants in effluents using toxicity-based fraction with gas chromatograph/mass spectrometry.Analyt Chem,63:277～283
[5] Burkhard L P,et al.1991.Identification of ammonia, chlorine and diazinon as toxicants in a municipal effluent.Arch Environ Contam Toxicol,25:506～515
[6] Cheng J(程静), Jin H-J(金洪钧), Shen Y(沈毅),et al.2001.A case study on the evaluation of city effluent treatment system by TIE.Environ Chem(环境化学),20(5): 490～496 (in Chinese)
[7] Cheng J(程静), Yu H-X(于红霞), Jin H-J(金洪钧).2001.Study on key toxicants in the mixture of domestic and industrial wasterwater.Shanghai Environ Sci(上海环境科学),20(2):82～84(in Chinese)
[8] China EPA(国家环保局).1989.Manual of Aquatic Monitoring. Nanjing: Dongnan University Press. 62～68 (in Chinese)
[9] Cui Y-X(崔玉霞), Shang H-H(尚惠华), Jin H-J(金洪钧),et al.2001.Effects of sewage sludge storage on the toxicity of its extracts.J Nanjing Univ(南京大学学报),37(6):713～717 (in Chinese)
[10] He M-C(何孟常), Yang J-R(杨居荣),et al.1999.Progress and application of toxicity evaluation to environmental samples.Shanghai Environ Sci(上海环境科学), 18(6):289～291(in Chinese)
[11] Jin H-J. 1999. A case study on identifying the toxicant in effluent discharged from a chemical plant.Mar Pollu Bull,39:122～125
[12] Jin H-J, Yang X, Yu H-X,et al.1999.Identification of ammonia and volatile phenols as primary toxicants in a coal gasification effluent.Bull Environ Contam Toxicol,63:399～406
[13] U.S.EPA.1991.Methods for aquatic toxicity identification evaluations:phase Ⅰ.Toxicity characterization procedures. U.S.EPA-600/6-91/003, ERL-Duluth,Min.
[14] U.S.EPA.1993a.Methods for aquatic toxicity identification evaluations:phase Ⅱ.Toxicity identification procedures for samples exhibiting acute and chronic toxicity. U.S.EPA-600/R-92/080,ERL-Duluth, Min.
[15] U.S.EPA.1993b.Methods for aquatic toxicity identification evaluations:phase Ⅲ.Toxicity characterization procedures for samples exhibiting acute and chronic toxicity. U.S.EPA-600/R-92/081,ERL-Duluth, Min.
[16] U.S.EPA.1990.Trimmed spearman-karber (TSK) program version 1.5. ecological monitoring research division.Environmental Monitoring Systems Laboratory, U.S.EPA, Cincinnati,OH.
[17] Yang L,Yu H-X,Jin H-J,et al.1999. Contribution of nonpolar organic compounds to the toxicity of a chemical works effluent.Bull Environ Contam Toxicol,62:434～439
[18] Yang L, Yu H-X, Jin H-J,et al.1999.Application of the simplified toxicity identification evaluation procedures to a chemical works effluent.Chemosphere,38(15):3571～3577
[19] Yang X (杨璇),Jin H-J (金洪钧),Yin D-Q (尹大强),et al.1998.Cause identification of ecotoxicity of chemical industrial wastewater-a case study.Chin J Appl Ecol(应用生态学报),9(5):525～528 (in Chinese)
[20] Yu H-X(于红霞), Cheng J(程静), Jin H-J(金洪钧). 2001. Identification of key toxicants in a bleaching effluent-a case study.Chin J Appl Ecol(应用生态学报),12(3):458～460(in Chinese)