A kind of treatment method of heavy metal sewage

A treatment method and heavy metal technology, applied in water/sewage treatment, water/sewage multi-stage treatment, oxidized water/sewage treatment, etc., can solve the problems of a large amount of chemical sludge, dosing a large amount of chemical agents, etc., and achieve high treatment efficiency , to eliminate secondary pollution, the effect of high operational flexibility

Active Publication Date: 2021-08-03
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above two methods require a large amount of chemical agents to be added during the treatment process, and a large amount of chemical sludge will be generated after treatment. The cost of chemical agents and the cost of chemical sludge disposal become the main cost sources of chemical precipitation and adsorption methods.

Method used

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  • A kind of treatment method of heavy metal sewage
  • A kind of treatment method of heavy metal sewage
  • A kind of treatment method of heavy metal sewage

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A treatment method for heavy metal sewage, the method comprises the following steps:

[0028] Step 1. Mechanical treatment: Sorting the sewage through the coarse mechanical grid, and then crushing the impurities through the fine mechanical grid, and then entering the cyclone grit chamber for treatment;

[0029] Step 2. Ultrasonic-microwave photocatalytic degradation of organic matter: the effluent of the cyclone grit chamber is passed through the reflux pump ( figure 1 Middle 1) into the ultrasonic-microwave photocatalytic reactor ( figure 1 shown), rod-shaped microwave electrodeless UV lamp ( figure 1 5) and nano Ag / TiO 2 Laser-melted electrospun porous silica fiber webs ( figure 1 Middle 4) Arranged in a staggered manner inside the reactor, turn on the microwave electrodeless ultraviolet lamp and the ultrasonic generator ( figure 1 Middle 3), reacted for 20min, the organic matter was degraded to generate volatile gas, which was passed through the tail gas treatmen...

Embodiment 2

[0034] A treatment method for heavy metal sewage, the method comprises the following steps:

[0035] Step 1. Mechanical treatment: Sorting the sewage through the coarse mechanical grid, and then crushing the impurities through the fine mechanical grid, and then entering the cyclone grit chamber for treatment;

[0036] Step 2. Ultrasonic-microwave photocatalytic degradation of organic matter: the effluent of the cyclone grit chamber is passed through the reflux pump ( figure 1 Middle 1) into the ultrasonic-microwave photocatalytic reactor ( figure 1 shown), rod-shaped microwave electrodeless UV lamp ( figure 1 5) and nano Ag / TiO 2 Laser-melted electrospun porous silica fiber webs ( figure 1 Middle 4) Arranged in a staggered manner inside the reactor, turn on the microwave electrodeless ultraviolet lamp and the ultrasonic generator ( figure 1 Middle 3), reacted for 30min, the organic matter was degraded to generate volatile gas, which was passed through the tail gas treatmen...

Embodiment 3

[0041] A treatment method for heavy metal sewage, the method comprises the following steps:

[0042] Step 1. Mechanical treatment: Sorting the sewage through the coarse mechanical grid, and then crushing the impurities through the fine mechanical grid, and then entering the cyclone grit chamber for treatment;

[0043] Step 2. Ultrasonic-microwave photocatalytic degradation of organic matter: the effluent of the cyclone grit chamber is passed through the reflux pump ( figure 1 Middle 1) into the ultrasonic-microwave photocatalytic reactor ( figure 1 shown), rod-shaped microwave electrodeless UV lamp ( figure 1 5) and nano Ag / TiO 2 Laser-melted electrospun porous silica fiber webs ( figure 1 Middle 4) Arranged in a staggered manner inside the reactor, turn on the microwave electrodeless ultraviolet lamp and the ultrasonic generator ( figure 1 Middle 3), reacted for 40min, the organic matter was degraded to generate volatile gas, which was passed through the tail gas treatmen...

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Abstract

The invention discloses a treatment method for heavy metal sewage. The method comprises the following steps: step 1, mechanical treatment; step 2, ultrasonic-microwave photocatalytic degradation of organic matter; step 3, removal and recovery of heavy metal ions; step 4, weak base Anion exchange resin adsorption; step five, reverse osmosis desalination. The heavy metal sewage treatment method provided by the invention does not use chemicals, and has high process flexibility. Compared with common sewage treatment methods, the treatment cycle is greatly shortened; the method removes organic matter completely, recovers heavy metals easily and conveniently, has high desalination rate, simple operation and high efficiency. High, no secondary pollution, low cost, obtain recycled water that can be directly used in industrial production, with a recovery rate of over 95%, which is of great significance to water resource utilization and environmental protection, and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment method for heavy metal sewage. Background technique [0002] Heavy metal pollution is environmental pollution caused by heavy metal ions and their compounds. Heavy metal pollution is difficult to degrade in the environment, can accumulate in animals and plants, and gradually enriches through the food chain. It is one of the most harmful pollutants to human health. The source of heavy metal ions is mainly the discharge of wastewater in industrial production, such as electroplating, electrolysis, hardware, circuit board production, printing and dyeing, leather manufacturing and other enterprises. [0003] The total amount of heavy metal sewage is huge and tends to increase year by year. If it is not treated before discharge, it will cause serious environmental pollution and cause damage to soil, surface water, and groundwater. Commonly used heavy metal wastew...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/08C02F101/30C02F101/20C02F101/16
CPCC02F1/001C02F1/285C02F1/302C02F1/32C02F1/36C02F1/42C02F1/441C02F1/72C02F1/725C02F9/00C02F2001/007C02F2001/422C02F2101/16C02F2101/20C02F2101/30C02F2303/16C02F2305/023Y02A20/131
Inventor 杨浩王建红高丽任明安乔聪震
Owner HENAN UNIVERSITY
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