Cadmium Protection Aquatic Organisms Water Quality Standard Value Establishment Method and Cadmium Removal Method
A cadmium water and water body technology, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc.
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Embodiment 1
[0051] The method for formulating the water quality standard value for the protection of aquatic organisms of cadmium includes the following steps:
[0052] S1. Data collection and collation
[0053] The collection of data includes: physical and chemical properties of cadmium, toxicity data of cadmium in aquatic organisms, migration and transformation of cadmium in the water environment, pollution status of cadmium in the water environment, use and output of cadmium, biological persistence of cadmium Accumulative, cadmium detection and analysis methods, and published water quality standards for aquatic organisms in other countries or regions on cadmium;
[0054] (1) Basic properties
[0055] Cadmium is a silver-white shiny metal with an atomic number of 48, a relative atomic mass of 112.4, a melting point of 320.9°C, a boiling point of 765°C, and a density of 8.65g / cm 3 .
[0056] (2) Existing form and state of cadmium in water environment
[0057] In water bodies, cadmium...
Embodiment 2
[0117] A method for removing cadmium in water bodies. The removal method uses a composite treatment agent to treat cadmium-containing water. The composite treatment agent includes the following components in parts by mass:
[0118]
[0119] Add 220 mg of the above composite treatment agent per liter of cadmium-containing water. The composite treatment agent can effectively remove metal cadmium in water, the effluent concentration is lower than 3.0 μg / L, the removal rate of cadmium in water reaches more than 99.9%; the simultaneous removal rate of COD reaches 91%. The specific cadmium content test results are shown in Table 1.
[0120] Table 1
[0121]
Embodiment 3
[0123] A method for removing cadmium in water bodies. The removal method uses a composite treatment agent to treat cadmium-containing water. The composite treatment agent includes the following components in parts by mass:
[0124]
[0125]
[0126] Add 220 mg of the above composite treatment agent per liter of cadmium-containing water. The composite treatment agent can effectively remove metal cadmium in water, the effluent concentration is lower than 3.0 μg / L, the removal rate of cadmium in water reaches more than 99.9%; the simultaneous removal rate of COD reaches 86%. The specific cadmium content test results are shown in Table 2.
[0127] Table 2
[0128]
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