Study on the leaching toxicity and safe disposal of manganese sulphate waste residue;

Study on leaching toxicity of pollutants in fly ash under a natural pileup

Water content,ash content,and pH values were studied,together with total content of heavy metals,identification of leaching toxicity,by 6 samples from 6 different textile dyeing plants.

And the research shows that: in the acidic leaching condition,Cu in the doped Fe3O4 has the largest leaching concentration,Ni takes the second place;Zn,Fe and Cr have a good stability,and the concentration is lower than the regulatory limit of Toxic Characteristic Leaching Procedure(TCLP) in pH range of 3～10.

Acute toxicity test method using Neomysis awatschensis and its application in toxicity evaluation of drilling fluid;

In this paper the inhibition from organic pollutants to microbe growing in fluid culture medium was introduced as a index for toxicity evaluation.

This paper reviews the advantages of protozoa in environmental monitoring briefly,discusses application progress of protozoa in water monitoring,soil monitoring and toxicity evaluation of chemical materials,and points out some problems.