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Use environmentally friendly deodorant to treat pulp wastewater with high efficiency
Author: Dongguan Wante source: http://fatheroye.com/ date: 2019-11-30 Clicks:
The color of the wastewater in the middle section of the wood pulp is relatively high. The lignin in the wastewater is the main reason for the color of the wastewater in the pulping section. The use of chlorine-containing bleaching agents makes the wastewater contain a large amount of chlorinated lignin, resulting in the color of the wastewater Deepen further. The middle stage pulping wastewater is the wastewater discharged from the cooking slurry during washing, screening, bleaching and beating after black liquor extraction. This part of the wastewater has a large amount of water, and each ton of pulp can generate about 50 ~ 200t of middle wastewater. The pollution amount of the middle stage wastewater accounts for about 8% -9%. The COD load is about 310kg. It contains more lignin, including organic substances such as organic acids, and most of the organic substances are soluble COD.

Plant-based deodorant can be used for perennial, continuous malodor treatment, and can also calmly deal with temporary, ultra-high concentration malodor events. Plant-based deodorant itself does not have any harm to human body, animals, plants and soil, and odor molecules Decomposition products are completely harmless to humans, animals, and plants.
Under the optimized experimental conditions, TiQ sol is used to deeply treat the middle-stage papermaking wastewater under sunlight, which can effectively remove the color of wastewater, and the removal rate of OOD is as high as 90%. In the TC2 photodegradation system using activated carbon fiber (ACF as the carrier), the removal rate of wastewater CIXO increased with the increase of the surface area of T02 / ACF. After 40 minutes, the CCD could be reduced from 215mg / 1 to 100mg / 1 and gradually reached equilibrium. However, if the system is recycled, the surface area of TiQ / ACF is too large, which will lead to an increase in COCEC. The photocatalytic method can reduce the load of organic pollutants in cardboard production wastewater. In a closed circuit with a high CCD content, It works best.
Many of the chromophores in the wastewater have strong ligands that can complex with the metal ions in the transition element. When the lone pair of electrons of the coordination atom of the chromophore enters the empty orbit of the central particle, The distribution of the electron cloud of the conjugate system in the chromophore is shifted, and the energy of the excited state and the excited state is changed, and the color of the complex is also changed. Under neutral and acidic conditions, FeZ 'uses more ions. state.
Papermaking wastewater contains a large amount of organic matter and has good biochemical properties. Generally, aerobic biological treatment of papermaking wastewater can obtain good results. Anaerobic biological treatment Anaerobic biological treatment is a treatment technology that uses facultative anaerobic bacteria and obligate anaerobic bacteria to degrade organic pollutants under anaerobic conditions. Aerobic biological treatment method The aerobic biological treatment method is a method of degrading pollutants by aerobic microorganisms under aerobic conditions. This method can be divided into activated sludge method and biofilm method according to different states of aerobic microorganisms in the treatment system.
Sewage deodorant is not restricted by the climatic environment such as temperature, it will not be affected by the temperature and environment to prevent it from exerting its effect. It has extremely strong weather resistance. It can be used in high temperature ( below 50 ℃) and high temperature (-15 ℃). It can give full play to its deodorizing effect; its deodorizing effect is basically unaffected whether in wet or arid regions.

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