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Copper ammonia wastewater pretreatment integration device and method

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: 2021-02-02
CHANGZHOU UNIV
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  • Copper ammonia wastewater pretreatment integration device and method

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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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Abstract

The invention discloses a copper ammonia wastewater pretreatment integration device and method, and belongs to the technical field of wastewater treatment. Wastewater firstly enters a first air stripping chamber, pollutants with low density and fine bubbles generated by aeration form dross, and meanwhile, part of ammonia nitrogen in the wastewater is blown out of the water surface. The wastewaterenters a vulcanization chamber, the pH of the wastewater is adjusted, and sodium sulfide is added for chemical reaction to generate copper sulfide. The reacted wastewater enters a copper removal chamber, copper sulfide with large particles and large specific gravity sinks to the lower portion of the copper removal chamber under the action of gravity, and copper sulfide with small particles is mixed with a flotation agent and adheres to bubbles blown out through aeration to form copper sulfide dross. The wastewater subjected to precipitation and flotation enters a second air stripping chamber,the pH value of the wastewater is adjusted, NH3 in the wastewater is blown out of the water surface through air blown out through aeration, and hydrogen sulfide gas in the wastewater is also blown outof the water surface. The wastewater after air stripping enters a desulfurization chamber, elemental sulfur sinks to the lower part of the desulfurization chamber under the action of gravity, and thewastewater is filtered by a filter material and then discharged through an 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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
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