Method of degrading Napolean green in waste water

A malachite green and wastewater technology, applied in chemical instruments and methods, water/sewage treatment, light water/sewage treatment, etc., can solve the problems of water consumption, large equipment and area, poor degradation effect, etc. Saving capital investment, less floor space, good degradation effect
CN1810676AInactive Publication Date: 2006-08-02TONGJI UNIV
0 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
TONGJI UNIV
Publication Date
2006-08-02
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The method of degrading Napolean green in waste water is to degrade Napolean green in waste water with ultraviolet ray of 185 nm wavelength. Waste water containing Napolean green in 10 mg / L is first fed into a water tank, and then the waste water is pumped into the 185 nm ultraviolet reactor in the flow rate of 0.14-0.70 L / min while the reacted waste water is pumped into the water tank circularly in the flow rate of 40-160 L / hr. Monitoring on the Napolean green concentration of the water sample from the water tank shows that the Napolean green degrading rate in 40 min reaches over 99 % and the waste water reaches the draining stardard. The 185 nm wavelength ultraviolet ray acts on water to produce homolytic reaction of water and produce hydrated electrons in high concentration as active intermediate. The present invention has high degrading effect, high degrading speed, low running cost, no secondary pollution and other advantages.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for degrading malachite green in waste water. Specifically, 185nm ultraviolet light is used to degrade the malachite green, so as to achieve the purpose of treating the malachite green pollution in waste water in food, printing and dyeing and other industrial fields. Background technique

[0002] Malachite green is a kind of green crystal with metallic luster, which is a basic dye and a triphenylmethane dye. Malachite green has side effects such as high toxicity, high residue, carcinogenicity, teratogenicity and mutagenicity. In view of the harmfulness of malachite green, many countries have listed malachite green as a banned drug in aquaculture, and any fish is not allowed to contain such substances. And this chemical should not be in any food. my country, the United Kingdom and European countries have issued another food safety alert following the "Sudan No. 1". The domestic media immedi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More