Micro electrolysis technology is an ideal process for treating high concentration organic wastewater with polyaluminum chloride. The wastewater treatment process with high salinity, difficult degradation and high chromaticity can not only greatly reduce COD and pigments, but also greatly improve the biodegradability of wastewater. This technology is to treat wastewater by using micro electrolysis filler filled in micro electrolysis device, so as to produce galvanic effect without electricity. When water passes through, many primary batteries with a potential difference of 1.2V are formed in the device. The primary battery uses wastewater as electrolyte to form current through discharge, electrolytic oxidation and reduction of wastewater, so as to achieve the purpose of degrading organic pollutants. The new ecology [.oh], [h], [o], fe2+, Fe3 + produced in the treatment process can carry out oxidation-reduction reaction with many components in the wastewater.
For example, coloring of colored substances in coloring wastewater. This group or color assisted group, even if the chain is broken, also realizes the effect of degradation and decolorization; The formed Fe2 + is further oxidized to Fe3 +, and their hydrate has strong adsorption and flocculation activity, especially after adjusting the alkali to pH value. Ferric hydroxide and ferric hydroxide colloid.
Flocculant, whose flocculation capacity is much higher than that of iron hydroxide colloid obtained by hydrolysis of general reagents, can flocculate a large number of fine particles, metal particles and organic macromolecules dispersed in water. Based on the comprehensive action of electrochemistry, redox, physics and flocculation sedimentation. The polyaluminum chloride process has the advantages of wide application range, good treatment effect, low cost, short processing time, convenient operation and maintenance, low power consumption, and can be widely used in the pretreatment and advanced treatment of industrial wastewater.
The basicity of polyaluminum chloride is a relatively important indicator of polyaluminum chloride, especially for drinking water grade polyaluminum products. The lower the alkalinity is, the higher the price is. All purchasers can operate according to the actual situation of the manufacturer. In addition, the alkalinity of polyaluminum chloride products produced and treated with different raw materials and processes is also different, which requires manufacturers to adjust. Improving the basicity of polyaluminum chloride products can greatly improve the economic benefits of production and use. The basicity is increased from 65% to 92%, the cost of raw materials can be reduced by 20%, and the use cost can be reduced by 40%.
The first manifestation of the toxicity of aluminum ions in polyaluminum chloride is the harm to human body. Aluminum ions are beneficial to human body when appropriate, because they can alleviate the harm of lead to human body. However, when we ingest excessive aluminum ions, it will cause harm to human organs such as liver, stomach, spleen, brain, thyroid gland, etc., resulting in premature aging, dementia, anemia and other diseases. The second is the harm to microorganisms, which is discussed here in two cases. The first is the case of low mass fraction, which is manifested as stimulation, resulting in the stimulation of ammonifying bacteria, nitrifying bacteria, denitrifying bacteria, etc. in the soil; The second is inhibition. When the mass fraction is high, it is not conducive to the activity of anaerobic and aerobic bacteria in water. But the good thing is that microorganisms have the ability of self-healing, so we can cultivate them for a period of time under a certain concentration of aluminum ions, which can make the microorganisms produce anti toxicity. The third point is the harm to animals and plants. Aluminum ions will inhibit the growth of plants, because aluminum ions will affect the absorption of plant roots.
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