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Process for treating sulfamide-containing pharmaceutical wastewater

A chemical and pharmaceutical wastewater treatment process technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., to achieve the effects of fast treatment speed, wide adaptability, and strong degradation ability

Inactive Publication Date: 2013-03-20
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This degradation technology with OH as the main oxidant overcomes the problems existing in the common oxidation method, but the pH requirement of the required water environment condition is relatively low, and generally requires a pH of about 3.5 to achieve a good effect, so it cannot be used on a large scale in practice. applied at scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) pretreatment: adjust the pH value of waste water to 11.0 with slaked lime, add certain sea salt, and constantly stir, generate white precipitation, contain the magnesium chloride of 7% in the described sea salt; Amides and benzene ring organic substances are subjected to micro-electrolysis treatment; (3) Adjustment pool: add a certain amount of sodium bicarbonate to adjust the pH value of the effluent from the micro-electrolysis pool to 10.0; (4) IC anaerobic internal circulation reactor: for waste water The temperature is heated to 35°C, and enters the anaerobic internal circulation reactor, and the wastewater is continuously refluxed; (5) Facultative + aerobic treatment: control the dissolved oxygen in the facultative pool at 0.2mg / L, and the dissolved oxygen in the aerobic pool at 3.0mg / L ; (6) Biological aerated filter: keep the microbial load up to 28g / L, and the soda-water ratio up to 10:1. The removal rate of sulfonamide in wastewater can reach 97%.

Embodiment 2

[0027] (1) pretreatment: adjust the pH value of waste water to 11.5 with slaked lime, add certain sea salt, and constantly stir, generate white precipitation, contain the magnesium chloride of 7.5% in the described sea salt; Amides and benzene ring organic substances are subjected to micro-electrolysis treatment; (3) Adjustment pool: add a certain amount of sodium bicarbonate to adjust the pH value of the water effluent from the micro-electrolysis pool to 10.5; (4) IC anaerobic internal circulation reactor: for waste water The temperature is heated to 36°C, and enters the anaerobic internal circulation reactor, and the wastewater is continuously refluxed; (5) Facultative + aerobic treatment: control the dissolved oxygen in the facultative pool at 0.15mg / L, and the dissolved oxygen in the aerobic pool at 4.0mg / L ; (6) Biological aerated filter: keep the microbial load up to 29g / L, and the soda-water ratio up to 12:1. The removal rate of sulfonamidation in wastewater can reach 9...

Embodiment 3

[0029] (1) pretreatment: adjust the pH value of waste water to 12.0 with slaked lime, add certain sea salt, and constantly stir, generate white precipitation, contain the magnesium chloride of 8% in the described sea salt; Amides and benzene ring organic substances are subjected to micro-electrolysis treatment; (3) Adjustment pool: add a certain amount of sodium bicarbonate to adjust the pH value of the effluent from the micro-electrolysis pool to 11.0; (4) IC anaerobic internal circulation reactor: for waste water Heat the temperature to 38°C, enter the anaerobic internal circulation reactor, and the wastewater will continuously reflux; (5) facultative + aerobic treatment: control the dissolved oxygen in the facultative pool at 0.1mg / L, and the dissolved oxygen in the aerobic pool at 5.0mg / L ; (6) Biological aerated filter: keep the microbial load up to 30g / L, and the soda-water ratio up to 15:1. The removal rate of sulfonamidation in wastewater can reach 99%.

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Abstract

The invention discloses a process for treating sulfamide-containing pharmaceutical wastewater. Through pretreatment, microelectrolysis, a regulating reservoir, an IC anaerobic internal circulation reactor, anoxic and aerobic treatment and a biological aerated filter, the speed and the effect of treating the sulfamide-containing pharmaceutical wastewater are improved. The process has the advantages of little investment for treating various kinds of wastewater, small occupation area, good treatment effect and low operation cost, and has remarkable economic benefit and social benefit. The process is suitable for treatment of municipal and domestic wastewater and various kinds of industrial wastewater, is also suitable for treatment of wastewater in rivers and lakes, and has a special treatment effect especially on high-difficulty organic wastewater and high-ammonia nitrogen wastewater which can not be treated by adopting the traditional method.

Description

technical field [0001] The invention relates to a process for treating sewage, in particular to a process for treating sulfonamide-containing chemical and pharmaceutical waste water. technical background [0002] Sulfonamide is the collective name of aminosulfonamide, aminobenzenesulfonamide and its sulfonamide derivatives. It is widely used in chemical and pharmaceutical fields. The production wastewater has the characteristics of high chroma, high organic concentration and refractory biodegradation. An organic pollutant that is difficult to remove from wastewater. With the development of wastewater treatment technology so far, some wastewater with simple components, good biodegradability and low concentration can be removed by combining traditional processes. However, with the development of modern industrial production, especially the chemical industry, the composition of industrial wastewater has become increasingly complex, especially chemically synthesized organic mat...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 郭迎庆李伯平李锦宇
Owner CHANGZHOU UNIV
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