An integrated device and method for pretreatment of cuproammonia wastewater
A cuproammonia wastewater and pretreatment technology, applied in multi-stage water treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc., can solve the problems of high treatment cost and complicated operation, and achieve simple operation and low energy consumption , The effect of low manufacturing cost
Active Publication Date: 2022-05-13
CHANGZHOU UNIV
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[0041] Such as figure 1 The shown integrated cuproammonia wastewater pretreatment device of the present invention includes a first stripping chamber 1 , a vulcanization chamber 2 , a copper removal chamber 3 , a second stripping chamber 4 and a desulfurization chamber 5 .
[0042] The first blow-off chamber 1 is provided with a water inlet pipe 1-1, the middle and lower part of the first blow-off chamber 1 is provided with a first aeration pan 1-2, and above the first aeration pan 1-2 A water distribution pipe 1-3 is provided, the water distribution pipe 1-3 is connected to the water inlet pipe 1-1, and the first aeration pan 1-2 is connected to the first air blower 1 outside the first blowing chamber 1 through a pipeline -4. The upper part of the first stripping chamber 1 is provided with a first scraper 1-5 and a first scum tank 1-6. In order to have a better effect of wastewater treatment, the water distribution pipes 1-3 are arranged in the shape of concentric circles or...
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An integrated device and method for cuproammonia wastewater pretreatment belong to the technical field of wastewater treatment. The waste water first enters the first stripping chamber, and the pollutants with low density and the fine air bubbles produced by aeration form scum, and at the same time, part of the ammonia nitrogen in the waste water is blown out of the water surface. The wastewater enters the vulcanization chamber, the pH of the wastewater is adjusted and sodium sulfide is added for a chemical reaction to generate copper sulfide. After the reaction, the wastewater enters the copper removal chamber, and the copper sulfide with large particles and large specific gravity sinks to the lower part of the copper removal chamber under the action of gravity, and the copper sulfide with small particles is mixed with the flotation agent and adhered by the air bubbles blown out by aeration Copper sulfide dross is formed. The wastewater after sedimentation and flotation enters the second stripping chamber to adjust the pH value of the wastewater and blow out the NH in the wastewater through aeration. 3 Blowing out of the water surface, the hydrogen sulfide gas in the waste water is also blown out of the water surface. The stripped wastewater enters the desulfurization chamber, and the elemental sulfur sinks to the lower part of the desulfurization chamber under the action of gravity, and the wastewater is filtered by the filter material and discharged through the overflow weir.
Description
technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an integrated device and method for cuproammonia wastewater pretreatment. Background technique [0002] Cupro ammonia wastewater mainly comes from industrial production, including wastewater discharged from industries such as metal smelting and printed circuit boards. Copper ammonia wastewater contains copper and ammonia nitrogen, and is polluting with copper and ammonia nitrogen, which is extremely harmful. Although copper is an essential trace element for the human body, it plays an important role in hematopoiesis, cell division, certain enzyme activities, and endocrine, but too much copper can cause diseases such as Alzheimer's, liver cirrhosis, and nerve damage, and copper will enter the serum Hemolysis also inhibits glutathione reductase, reducing its content. Ammonia nitrogen is a nutrient substance for microorganisms. Excessive concentration will cause eutro...
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IPC IPC(8): C02F9/04C02F101/20C02F101/16C02F101/10
CPCC02F9/00C02F1/24C02F1/20C02F1/52C02F1/66C02F2101/20C02F2101/16C02F2101/101C02F2301/08
Inventor 徐成栋万玉山
Owner CHANGZHOU UNIV