What is the emission standard for arsenic-containing waste containing arsenic fumes in milligrams?
Arsenic-containing fume is widely used and is a very popular product in the market due to its various advantageous characteristics. But it also has many points of knowledge that need to be understood when it is used, after all, there are many users who do not understand these. Next, I will introduce you to the arsenic-containing fumes of arsenic-containing waste emission standards is how many milligrams? If you are interested, you can come to read.
Although the use of arsenic-containing fume is very wide, but most of the readers still do not know enough when they see this product. Especially for its characteristics. Today we take this opportunity to tell you about it. First of all, arsenic-containing fumes and dusts contain highly toxic substances, and soluble compounds are very harmful to human and animal life safety and the environment. Some industrial enterprises will produce wastewater, which must be strictly treated to meet national emission standards before discharge. As to use it, what you need to know is the assessment of the stability of the waste containing soot. As you can see, some industrial "three wastes" emission test standards specify that the maximum permissible mass concentration of inorganic compounds in groundwater is 0.04mg/DUL, and the average daily high permissible mass concentration of chemicals in the atmosphere in residential areas (calculated) is 0.003mg/m3. Therefore, most countries currently use the U.S. Environmental Protection Agency's "Toxicity Characterization Procedure Test Dao" (TCLP test) for testing. In this case, the hazardous solid waste can be mixed with an acetic acid buffer solution with a pH of 5 in a 10:l liquid-solid product ratio.
So it is said that it can react for 20 hours especially at 30R/min stirring intensity when performing arsenic-containing soot. After the liquid-solid separation, the concentration of harmful elements in the leaching solution is reduced. When the content of leachate containing substance by TCLP test is higher than 5m‖L, the waste containing substance must be treated and must not be discharged directly. When using dust for arsenic-containing fumes, it is also necessary to know that the slag and secondary de-slag now contain a large amount of water, the concentration of which is in phase equilibrium with that in the precipitation during the chemical reaction. Theoretically, the concentration of water contained in the slag can reach less than 2.5 mg/L, at which point the concentration of "water" contained in the slag can reach less than 1 mg/L, and the very dilute acid leaching method used to determine toxicity actually leaches only this portion of the "water" contained in the solid sediment ". Therefore, as long as the concentration in the filter residue is below the "standard", it is ensured that the residue leachate does not exceed the standard. Arsenic-containing fumes are tested by the U.S. Environmental Protection Agency's "Toxicity Characterization Program Experiment". What needs to be done here is to mix the hazardous solid waste with a pH 5 acetate buffer solution at a liquid to solid volume ratio of 101. Of course, you also need to be aware that your skin tone will darken. The main reason for the darkening of the skin is the high level in the human body.
Through the above content on the introduction after, we also have a further understanding of the arsenic containing fumes of arsenic waste emission standards is how many milligrams. When you see him again in the future, you will not feel strange, and in the process of use will not often have problems. Well, today's content is here, I believe it will bring more exciting knowledge points.
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