Treatment method of pesticide wastewater containing triadimefon
A treatment method and technology for pesticide wastewater, applied in water/sewage treatment, multi-stage water/sewage treatment, biological water/sewage treatment, etc., can solve the problems of high energy consumption, high cost, poor treatment effect, etc. The effect of low consumption, low cost, and reduced processing difficulty
Active Publication Date: 2019-09-03
SUN YAT SEN UNIV
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Problems solved by technology
[0006] The purpose of the present invention is to overcome the defects and deficiencies of high cost, high energy consumption and poor treatment effect in the existing pesticide wastewater treatment technology, and provide a treatment method for pesticide wastewater containing triadimefon
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Embodiment 1
[0047]This embodiment provides a method for treating pesticide wastewater containing triadimefon, and the process is as follows.
[0048] (1) Pretreatment of triadimefon-containing pesticide wastewater by coagulation and sedimentation: first adjust the pH of the pesticide wastewater to 7, add 200 mg / L aluminum sulfate solution to the pesticide wastewater, stir and react for 60 minutes, then let stand for 15 minutes to take the supernatant. It was determined that the chemical oxygen demand of the supernatant was 1126mg / L, pH=7.58, conductivity=5.3ms / cm, Na + =478mg / L, the mass concentration of each ion is: Mg 2+ =6mg / L, Ca 2+ =32mg / L, K + =225mg / L, Cl - =743mg / L, SO4 2- =829mg / L. At this time, the COD removal rate was 31%.
[0049] (2) The construction and start-up of the simultaneous acid-base production pool for microbial desalination, including the following steps:
[0050] (1) Build the reactor: the anode is a carbon brush, and the cathode is prepared by using activa...
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Abstract
The invention relates to a treatment method of pesticide wastewater containing triadimefon. The treatment method includes the steps of: S1: adding a precipitant into pesticide wastewater containing triadimefon, performing stirring and then taking the supernatant; S2: constructing a simultaneous microbial desalination and acid-alkali production tank for simultaneous microbial desalination and acid-alkali production treatment; and S3: adding a Fenton catalyst into the effluent water of the desalination chamber in S2 for reaction. The treatment method provided by the invention can remove the chemical oxygen demand in pesticide wastewater to 112mg / L to meet the pesticide wastewater discharge standard, and completely remove triadimefon from pesticide wastewater at the same time; the removal rate of chemical oxygen demand is as high as 93.1%; the produced alkali can achieve complete reuse, the alkali dosage can be saved by about 50%, the acid-alkali production price is almost 6.5 times thatof the consumed electric charge, thus greatly lowering the operating cost of the simultaneous microbial desalination and acid-alkali production tank for treatment of pesticide wastewater, and comparedwith the traditional method of treating pesticide wastewater by combining coagulation sedimentation with Fenton treatment, the method provided by the invention has obvious advantages.
Description
technical field [0001] The invention belongs to the field of bioelectrochemical systems, and in particular relates to a method for treating pesticide wastewater containing triadimefon. Background technique [0002] Pesticide wastewater has complex components, including a large number of toxic and harmful components, such as triadimefon, cypermethrin, chlorpyrifos, etc., which have poor biochemical properties and are toxic to microorganisms. The COD of pesticide wastewater can be as high as 1000mg / L or more. After entering the water body, it can affect the reproduction of fish schools, cause irritation to human skin and eyes, and cause skin cancer. The treatment methods of pesticide wastewater include biological treatment, Fenton reaction, ozone oxidation, photochemical oxidation and other methods. Due to the biological toxicity of pesticide wastewater, biological treatment often takes a long time. Although advanced oxidation methods such as Fenton reaction, ozone treatment...
Claims
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IPC IPC(8): C02F9/14C02F101/30
CPCC02F9/00C02F1/5236C02F3/34C02F1/42C02F1/725C02F2305/026C02F2101/306C02F1/66C02F2305/06C02F3/005C02F2303/10
Inventor 刘广立林松炜卢耀斌曾翠平骆海萍张仁铎崔婉俊徐俊添
Owner SUN YAT SEN UNIV