Treating process of navajoite waste water
A technology for treating process and waste water, which is applied in water/sewage multi-stage treatment, neutralized water/sewage treatment, water/sludge/sewage treatment, etc. Deal with high cost issues, achieve the effect of improving processing efficiency, reducing process costs and improving economic benefits
Inactive Publication Date: 2012-07-04
HUZHOU DEXIANG ENVIRONMENTAL PROTECTION ENG
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Problems solved by technology
This method is prone to corrosion and passivation, which affects the stability of the water purification effect; 2. Sulfur dioxide-sodium hydroxide-distillation concentration, the reducing agent SO in this method 2 3. Ion exchange method, using strong basic quaternary ammonium ion exchange resin, separates and reclaims vanadium from aqueous solution containing various impurity cations, and its disadvantage is that the amount of ion exchange resin Larger, frequent regeneration, high processing cost
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[0027] Be the embodiment of the treatment process of vanadium ore waste water of the present invention, comprise the steps:
[0028] Step 1: Neutralize the waste water, add lime milk to the alum ore extraction and washing waste water, and adjust the pH value of the waste water to 7;
[0029] Step 2: Solid-liquid separation, the neutralized wastewater flows into the sedimentation tank for primary sedimentation treatment to separate the solid-liquid, and the separated solid slag is sent to the tailings pond;
[0030] Step 3: High-efficiency coagulation and sedimentation. The supernatant after solid-liquid separation and the leachate of slag are pumped into the heavy metal gap separator for high-efficiency coagulation and sedimentation to completely remove suspended solids and various heavy metal ions. into the middle pool, where the heavy metal gap separator is an integrated metal ion remover;
[0031] Step 4: Deamination treatment. After the water in the middle pool is heated ...
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The invention discloses a treating process of navajoite waste water, which comprises the following steps: 1, neutralizing waste water; 2, carrying out solid-liquid separation; 3, carrying out high-efficiency coagulating sedimentation; 4, deaminizing; 5, cooling; 6, pre-filtering; 7, filtering by utilizing an active carbon filter; 8, filtering by utilizing a precision filter; 9, carrying out membrane filtration; and 10, recycling: feeding purified water into a circulating and reusing water pool and pumping to a factory for production use. By using the combination process, the invention can effectively remove vanadium, chromium, ammonia nitrogen and other harmful heavy metals in the vanadium extraction and washing waste water as well as organic and inorganic pollutants, bacteria, microorganisms and other impurities in the waste water, can effectively recover the vanadium, the chromium and the other harmful heavy metal impurities as well as the ammonia nitrogen and the other harmful substances, and can simultaneously recycle the purified water.
Description
technical field [0001] The invention relates to a vanadium ore waste water purification and reuse process. Background technique [0002] With the continuous mining of alum ore and the continuous expansion of vanadium production, the problem of environmental vanadium pollution has gradually increased. Vanadium extraction is a chemical method for separating and extracting vanadium. The wastewater after extraction still contains a certain amount of vanadium. Excessive discharge will seriously pollute the environment and affect human health. Therefore, the research on the purification and recovery process of vanadium-containing wastewater is important. The topic that the environmental protection industry has been exploring. [0003] At present, the chemical methods for treating vanadium-containing wastewater both at home and abroad mainly contain: 1. Ferrous sulfate-limestone precipitation method, this method includes two chemical reaction processes of reduction and neutralizat...
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IPC IPC(8): C02F9/10C02F1/66C02F1/52
Inventor 李杰
Owner HUZHOU DEXIANG ENVIRONMENTAL PROTECTION ENG