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A method for integrated treatment of wastewater by photocatalytic coupling microbial method

A technology for treating wastewater and microbial methods, applied in biological water/sewage treatment, chemical instruments and methods, oxidized water/sewage treatment, etc., can solve problems such as low reaction efficiency, poor ability, and difficult recovery of photocatalysts, and achieve efficiency improvement , high efficiency, and thorough wastewater treatment

Inactive Publication Date: 2014-10-29
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of poor ability of the existing photocatalytic method to catalyze and degrade organic matter in waste water, low reaction efficiency, difficulty in treating waste water with high pollutant concentration, difficulty in photocatalyst recovery, and low efficiency of organic matter in biologically degraded waste water. Provides a method for the integrated treatment of wastewater by photocatalytic coupling with microbial methods

Method used

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  • A method for integrated treatment of wastewater by photocatalytic coupling microbial method
  • A method for integrated treatment of wastewater by photocatalytic coupling microbial method

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specific Embodiment approach 1

[0027] Specific embodiment 1: In this embodiment, a method for integrated treatment of wastewater by photocatalytic coupling microbial method is carried out according to the following steps:

[0028] 1. Select the carrier:

[0029] Choose foam as the carrier;

[0030] 2. Preparation of carrier attachments:

[0031] a. Preparation of titanium dioxide-loaded carrier: Weigh 10 to 30 parts of polyethylene glycol and 1 to 3 parts of P25 titanium dioxide in parts by mass, and mix the weighed polyethylene glycol and P25 Titanium dioxide type titanium dioxide is ultrasonically mixed for 10min to 60min to obtain a mixed solution A. Put the carrier selected in step 1 into the mixed solution A, and ultrasonically mix it for 10min to 60min under the condition of 70°C to 90°C, take out the carrier, and store it at 40°C to 60°C Drying for 24h to 48h under certain conditions to obtain a carrier loaded with titanium dioxide, the carrier loaded with titanium dioxide is recorded as carrier A;...

specific Embodiment approach 2

[0040] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the carrier described in step 1 is foamed plastic made of polyurethane, polyethylene, pyrrolidone, and polypropylene, and the carrier is in the shape of a cube. The side length of the cube is 10mm-20mm, the aperture is 1mm-2mm, and the density is 0.8g / cm 3 ~1.5g / cm 3 , The porosity is 80% to 95%. Others are the same as the specific embodiments 1 to 3.

specific Embodiment approach 3

[0041] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that step a in step two is to mix the weighed polyethylene glycol and P25 type titanium dioxide ultrasonically for 20min to 40min under the condition of 80°C to obtain Mixture A. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses an integrated treatment method for wastewater by using a photocatalytic coupling microbiological method, which relates to a wastewater treatment method. The invention is designed for solving the problems that an existing photocatalytic method is poor in ability of catalytically degrading organic matters in wastewater and low in reaction efficiency, wastewater with high pollutant concentration is difficult to treat, photocatalysts are difficult to recover, and efficiency of biologically degrading organic matters in wastewater is low. The method disclosed by the invention comprises the following steps: 1, selecting a carrier; 2, preparing a carrier attachment: a, preparing a loading titanium dioxide carrier, b, inoculating microbes, c, cultivating the microbes, and d, domesticating the microbes; and 3, treating wastewater to be treated. According to the invention, the organic matter degradation ability is increased by 10 times, the reaction efficiency is increased by 20 times in comparison with a photocatalytic method, a large quantity of wastewater with a pollutant concentration of 10 g / L can be treated; because a photocatalyst titanium dioxide is loaded on the carrier, the photocatalyst is easy to recover and reuse. The method disclosed by the invention is applied to the field of water treatment.

Description

technical field [0001] The invention relates to a method for treating waste water. Background technique [0002] With the rapid development of industry and agriculture, water pollution has become a crisis faced by the international community. Pollutants in water, especially some organic pollutants that are difficult to biodegrade, have many types and great harm. The accumulation and transformation in nature will seriously affect the living environment of human beings. Because these organic pollutants are difficult to be biodegraded, and have inhibitory and toxic effects on biochemical reactions, simple biological treatment cannot degrade them, so people use some advanced oxidation technologies to treat them. Advanced Oxidation Technology, also known as Deep Oxidation Technology, is a technology for treating refractory organic waste water that was formed in the 1980s. This technology uses light, electricity, oxidants, catalysts, etc. to generate highly active hydroxyl radic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/72C02F3/34C02F101/30
Inventor 邢子鹏张琳琳周卫李丽张孝冬
Owner HEILONGJIANG UNIV