Removal device and removal method for wastewater containing bisphenol A

A wastewater and aeration device technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve high energy consumption, secondary pollution, poor adaptability to initial concentration fluctuations of chemical and electrochemical oxidation methods, etc. problems, achieve the effect of solving clogging and oxygen-enrichment problems, improving impact resistance, and compensating for instability

Inactive Publication Date: 2018-12-04
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] BPA is a kind of refractory biodegradable organic matter. The current traditional sewage treatment process for the purpose of removing organic matter and nutrients cannot completely remove BPA, resulting in the pollution of receiving water bodies and residual sludge receiving areas, resulting in the widespread presence of BPA in various water bodies. and landfill leachate, thereby affecting the water quality of urban water plants and groundwater. However, conventional coagulation, sedimentation, and filtration feedwater treatment processes are not effective in removing bisphenol A, leading to serious water quality safety problems. Therefore, BPA is widely used in the environment. Accumulate and enter the human body through the bioaccumulation effect, seriously threatening the safety of the ecological environment and human health
[0004] It is reported that the advanced treatment methods of BPA wastewater mainly include adsorption method, bioaugmentation method, photocatalytic degradation method, electrochemical method, coagulation sedimentation method and advanced oxidation method (such as potassium ferrate, ultrasonic oxidation, Fenton, plasma, etc.), but the adsorption method is prone to secondary pollution; the biological method has problems such as difficult control of reaction conditions, poor adaptability to initial concentration fluctuations, and large footprint; chemical and electrochemical oxidation methods have high energy consumption. , High processing cost, low utilization rate of photocatalytic oxidation light source, etc., all hinder the application of the above methods in the field of actual treatment of BPA, so seeking a new technical device to degrade bisphenol A has important practical significance for water environmental protection

Method used

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  • Removal device and removal method for wastewater containing bisphenol A
  • Removal device and removal method for wastewater containing bisphenol A

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] S1, configure BPA simulated wastewater 12mg / l, collect domestic sewage COD Cr 351mg / L, BOD 5 167mg / L, ammonia nitrogen 26mg / L, total phosphorus 2.2mg / L;

[0051] S2. Adjust the flow rate of BPA simulated wastewater to 5L / h, adjust the initial pH of simulated BPA wastewater to 4.5, and add 1.2g / L of α-Fe 2 o 3 The amount of photocatalyst, the amount of peroxysulfate added is 0.4g / L, the aeration rate is controlled to be 0.6L / min, and the concentration of BPA in the effluent is 1.05mg / L by high-performance liquid chromatography and the national standard method;

[0052] S3. SRPCR treats the effluent, adjusts the domestic sewage flow rate to 5L / h, and merges it into PCRIT. The operating cycle is 24 hours, and the single pool working cycle is 12 hours. The wet-dry ratio is controlled to be 1:1, that is, 1 hour is used for water distribution and 3 hours for Drainage, 4h is used for drying, using high-performance liquid chromatography and national standard method detection...

Embodiment 2

[0054] S1, configure BPA simulated wastewater 2mg / l; collect domestic sewage COD Cr 269mg / L, BOD 5 105mg / L, ammonia nitrogen 11mg / L, total phosphorus 1.8mg / L;

[0055] S2. Adjust the flow rate of BPA simulated wastewater to 5L / h, adjust the initial pH of simulated BPA wastewater to 5, and add 1.0g / L of α-Fe 2 o 3 The amount of photocatalyst is 0.6g / L peroxosulfate, the aeration rate is controlled at 0.5L / min, and the concentration of BPA in the effluent is 1.2mg / L when detected by high-performance liquid chromatography and the national standard method;

[0056] S3. SRPCR treats the effluent, adjusts the domestic sewage flow rate to 5L / h, and merges it into PCRIT. The operation cycle is 24 hours, and the single pool work cycle is 12 hours. The wet-dry ratio is controlled to be 1:1, that is, 1 hour is used for water distribution and 5 hours is used for Drainage, 6h for drying, using high-performance liquid chromatography and national standard method detection, PCRIT effluent ...

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Abstract

The invention discloses a removal device and a removal method for wastewater containing bisphenol A. The removal device comprises a wastewater conveying pipeline; and the removal device further comprises a photocatalytic reaction device for pretreating wastewater, and a biochemical reaction device for carrying out biochemical treatment on the wastewater treated by the photocatalytic reaction device. The device provided by the invention is simple in structure and compact in arrangement, and the method is realized through multiple synergistic effects of advanced oxidation, plants, microorganismsand physics, so that high load and low cost of the whole treatment process of the bisphenol A wastewater are ensured.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a device and method for removing bisphenol A-containing wastewater. Background technique [0002] Bisphenol A (BPA) is an endocrine disruptor with certain estrogenic properties, which can induce the occurrence of human breast cancer and prostate cancer. It has also been reported that BPA threatens the health of fetuses and children. In industry, bisphenol A is used to synthesize polycarbonate and epoxy resin for the manufacture of plastic (milk) bottles, suction cups for children, and coatings on the inside of food and beverage (milk powder) cans. [0003] BPA is a kind of refractory biodegradable organic matter. The current traditional sewage treatment process for the purpose of removing organic matter and nutrients cannot completely remove BPA, resulting in the pollution of receiving water bodies and residual sludge receiving areas, resulting in the wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/34
CPCC02F1/30C02F1/725C02F3/32C02F2101/345C02F2305/023
Inventor 唐海张昊楠李强张晨秦宝雨徐建平刘桂中
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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