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Treatment process for wastewater containing chlorine and organic matters

A treatment process and technology for organic matter, which can be applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problem of incomplete removal of chloride ions, etc. Low cost and high removal rate

Pending Publication Date: 2021-10-08
WUXI ZHONGTIAN SOLID WASTE DISPOSAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This dechlorination method converts chlorine ions in wastewater into chlorine gas and recycles them to avoid direct discharge and pollute the environment. However, hypochlorite ions still exist in the solution during the dechlorination process, and the complete removal of chloride ions has not been achieved.
[0005] In view of the problems of the above-mentioned technologies, there are still major technical difficulties in the simultaneous removal of chloride ions and organic matter in industrial wastewater. In order to realize the resource utilization of wastewater and reduce the damage caused by wastewater discharge to the environment, a high-efficiency, simple-to-operate and A low-cost process for removing chloride ions and organic matter in wastewater is very necessary

Method used

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  • Treatment process for wastewater containing chlorine and organic matters
  • Treatment process for wastewater containing chlorine and organic matters
  • Treatment process for wastewater containing chlorine and organic matters

Examples

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Embodiment 1

[0040]This embodiment provides a treatment process for wastewater containing chlorine and organic matter, the flow process of the treatment process is as follows figure 1 As shown, the treatment process comprises the following steps: adding 100 mL of waste water with a chlorine concentration of 3847 ppm and a COD content of 4381 ppm to the container, adjusting the pH of the waste water to 0.5 with sulfuric acid, adding 5 g of sodium persulfate and 0.5 g of sulfuric acid Copper synergistically oxidizes the wastewater, heats it to 90°C, stirs at 300rpm for 90min, and performs ozone aeration treatment at the same time. The amount of ozone introduced is 0.2mL / min: 1mL. The chlorine gas is removed by tail gas absorption, and sodium hydroxide neutralization solution is added to the sulfate solution obtained after ozone aeration treatment to adjust the pH to 5.5, and then solid-liquid separation is carried out, and the obtained sodium sulfate solution is evaporated and crystallized to...

Embodiment 2

[0042] This embodiment provides a treatment process for wastewater containing chlorine and organic matter, the flow process of the treatment process is as follows figure 1 As shown, the treatment process comprises the following steps: adding 100mL of waste water with a chlorine concentration of 3847ppm and a COD content of 4381ppm into the container, adjusting the pH of the waste water to 0.7 with sulfuric acid, adding 10g of sodium persulfate and 1g of copper sulfate Synergistically oxidize the waste water, and heat it to 85°C, stir at 400rpm for 120min, and simultaneously perform ozone aeration treatment, the amount of ozone introduced is 2mL / min:1mL, and other process parameters are the same as in Example 1.

Embodiment 3

[0044] This embodiment provides a treatment process for wastewater containing chlorine and organic matter, the flow process of the treatment process is as follows figure 1 As shown, the treatment process comprises the following steps: adding 100mL waste water with a chlorine concentration of 3847ppm and a COD content of 4381ppm into the container, adjusting the pH of the waste water to 0.3 with sulfuric acid, adding 2.5g sodium persulfate and 0.025g Copper sulfate synergistically oxidizes wastewater, and is heated to 95 ° C, stirred at 500 rpm for 60 minutes, and ozone aeration treatment is performed at the same time, the amount of ozone introduced is 0.05mL / min: 1mL, and other process parameters are the same as in Example 1.

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Abstract

The invention provides a treatment process for wastewater containing chlorine and organic matters. The treatment process comprises the steps of carrying out synergistic oxidation treatment and ozone aeration treatment on the wastewater containing chlorine and organic matters. According to the treatment process, organic matters and chloride ions in the wastewater can be synchronously removed, and sulfate products can be recycled. The concentration of the chloride ions in the treated wastewater is as low as 10 ppm or below, the problem that the chloride ions in the wastewater are completely removed is solved, the technological process is simple, the cost is low, and recycling of resources is achieved.

Description

technical field [0001] The invention relates to the technical field of waste water treatment and recycling, in particular to a treatment process for waste water containing chlorine and organic matter. Background technique [0002] With the rapid development of the industrial level and the rapid consumption of natural resources, industrial wastewater discharged from mining, petrochemical, food processing, non-ferrous metallurgy, papermaking, textile, paint and machinery manufacturing industries has increased significantly in the past few decades. Industrial wastewater often contains high concentrations of chloride ions and organic substances, which will not only pollute the environment, endanger human health and animal and plant growth, but also seriously corrode buildings, production and environmental protection equipment, and even cause production safety and environmental risk accidents. Therefore, the removal of industrial wastewater containing high concentrations of chlor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F101/12C02F101/30
CPCC02F9/00
Inventor 姜德胜张玉芳
Owner WUXI ZHONGTIAN SOLID WASTE DISPOSAL CO LTD