Mine pit wastewater layering treatment method and device
A treatment method and technology of treatment device, which are applied in mining wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The effect of improved circulation and high processing efficiency
Pending Publication Date: 2021-04-16
湖南省园林建设有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a layered treatment method and device for mine deep pit wastewater to solve the problem of low content of heavy metals in the above background technology
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Embodiment 1
[0038] A method and device for layered treatment of mine deep pit wastewater, the specific steps are as follows:
[0039] S1 Static sedimentation: Inject the lime water with pressure into the water body of different depths of the wastewater in the mine deep pit, and let it sit for 2-3 hours;
[0040] S2 plus chemical agent precipitation: take the supernatant after standing and settling, and adjust the pH of the mine wastewater to 9-11 under stirring. Coagulate and settle with flocculant, stop stirring after coagulating for 10-15min and let stand for 60-80min;
[0041] S3 oxidation reaction: take the precipitated supernatant and pass it through the purification device, apply ultrasonic waves and pass through ozone to carry out ultrasonic or ozone synergistic advanced oxidation reaction, the reaction time is 60-90min;
[0042] S4 Secondary addition of chemical agents for precipitation: After the oxidation reaction, add coagulant and flocculant in turn to coagulate and precipita...
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The invention relates to the technical field of wastewater treatment, in particular to a mine pit wastewater layering treatment method and device. The mine pit wastewater layering treatment method comprises the following specific steps: carrying out standing precipitation, adding a chemical agent to carry out precipitation, carrying out oxidation reaction, adding a chemical agent for a second time to carry out precipitation, carrying out secondary oxidation, adding hydrogen peroxide, adding lime milk into supernatant obtained after standing layering to adjust the pH value of wastewater to 6.0-8.0, adding a PAM solution after a precipitate is generated, carrying out standing and layering after stirring, and discharging supernatant after reaching the standard. Meanwhile, a water intake pipeline and a water return pipeline are arranged at different water body heights, the water pressures of the water intake pipeline and the water return pipeline are controlled to be equal, the water body is layered manually, different agents are injected in a layered mode, and a wastewater layering device and the water return pipeline are designed to be arranged at the same angle as the vertical center line of a buoy platform, so that water generates a vortex effect; the water body can rotate, so that the effect of uniform treatment is achieved, and the treatment capacity and level are improved.
Description
technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a layered treatment method and device for mine deep pit wastewater. Background technique [0002] Due to the long-term disorderly and unreasonable development of mineral resources, a series of serious mine environmental problems have been induced. Mine wastewater is one of them. Because of its high acidity, it also contains heavy metal ions such as copper, lead, zinc, and cadmium, so it has a great impact on the environment. Once the wastewater flows directly into the natural water system and then into the regional water system, it will cause great impact and harm to the downstream residents' life, production and the ecological environment on which they depend. Untreated acidic mine wastewater flowing into irrigated farmland will destroy the soil structure, cause soil compaction, inhibit the growth of crops, and in severe cases, cause large-scale death of crops and...
Claims
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Login to View More IPC IPC(8): C02F9/04C02F103/10
Inventor 刘加力张卫王勇坚郭静周朝新莫海军
Owner 湖南省园林建设有限公司