A method for combined removal of organic matter in water by potassium permanganate-biological manganese oxidation
A potassium permanganate and manganese oxidation technology, applied in the field of water treatment, can solve the problems of chroma pollution, secondary pollution of water body, etc., and achieve the effect of simple operation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0034] Embodiment 1. Potassium permanganate-biological manganese oxide oxidation combined treatment of wastewater containing Tyr, BP-4 organic pollutants
[0035] Before industrial application, first verify the method of the present invention to Mn 2+ , Tyr, BP-4 removal effect.
[0036] 1. Potassium permanganate pre-oxidation
[0037] An aqueous solution containing 176 mg / L Tyr and 1 mg / L BP-4 was prepared to completely dissolve each component. Add 153.6 mg / L potassium permanganate, and then let stand for 20 minutes.
[0038] In the reaction process described in step 1, get the described reaction solution at a specified time interval respectively, measure potassium permanganate and be the absorbance at wavelength of 525nm, and the detection method is as follows:
[0039] Potassium permanganate absorbance: use Shimadzu U-3010 UV-Vis spectrophotometer to detect the absorbance of the reaction solution at a wavelength of 525nm;
[0040] Due to the rapidity of the reaction bet...
Embodiment 2
[0058] Example 2. Oxidation of BP-4 by biological manganese oxide
[0059] 1. Preparation of biological manganese oxide
[0060] PYG medium (peptone, glucose, yeast extract 0.25g / L each, CaCl 2 .2H 2 O content 8mg / L, MgSO 4 .7H 2 O content 0.5g / L, MnCl 2 Content 5mg / L, add deionized water to 1L) to activate Pseudomonas putida QJX-1, and the buffer in the medium is HEPES with a final concentration of 10-20mM, pH7.5. Among them, HEPES buffer was filtered and sterilized with a 0.22 μm filter membrane. In the same batch, a total of 5 L of culture solution was prepared, and then the culture solution was shaken at 30 °C and 170 rpm for 72 h.
[0061] After culturing, the bacterial liquid was placed in a centrifuge at 7500 r min. -1 Centrifuge for 5 minutes. Pour off the supernatant and collect the biological manganese oxide. The biological manganese oxide precipitate was placed in a -20°C refrigerator for 24 hours, and finally put into a freeze dryer for drying for 48 hours ...
Embodiment 3
[0070] Embodiment 3: a kind of method of potassium permanganate preoxidation-biological manganese oxidation combined removal of organic matter in water
[0071] Using the method of the present invention to remove organic matter in surface water, before treatment, the concentration of Tyr in the water to be treated is 25 μg / L, and the concentration of BP-4 is 38 μg / L;
[0072] (1) Potassium permanganate preoxidation
[0073] Add potassium permanganate to the water to be treated, the concentration of potassium permanganate is 0.5mg / L, the water to be treated is pre-oxidized for 5 minutes to obtain pre-oxidized water, and the concentration of Tyr in the sewage is reduced from 25 μg / L to 12 μg / L, and produce 0.07mg / L soluble Mn 2+ ;
[0074] (2) Membrane formation in biological filter and domestication of manganese-oxidizing bacteria
[0075] ①Put the water to be treated into the inlet pipe of the biological aerated filter device and circulate it to the surface of the packing i...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More