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Arsenic-removing material for water body and application thereof in treatment of arsenic-containing wastewater

A water body and wastewater technology, applied in water/sewage treatment, water/sludge/sewage treatment, water treatment parameter control, etc., can solve problems such as high risk of secondary pollution, large-scale application restrictions, and large amount of waste residue. Achieve the effects of low comprehensive treatment cost, good treatment effect, and small amount of waste residue

Inactive Publication Date: 2018-09-07
芜湖格丰环保科技研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the traditional chemical method often involves multi-stage treatment, and the pH of the water needs to be adjusted repeatedly, and its treatment effect is easily affected by the wastewater matrix and arsenic form. Large-scale production, slow precipitation, and high risk of secondary pollution limit its large-scale application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A water body arsenic removal material is composed of agent A and agent B at a mass ratio of 1:1.

[0031] Agent A includes the following raw materials in parts by weight: 75 parts of 80-mesh polyferric sulfate; 15 parts of 80-mesh polyaluminum chloride; 10 parts of 80-mesh sodium humate. The arsenic-removing material A agent is obtained by uniformly mixing with a feeder.

[0032] Agent B includes the following raw materials in parts by weight: 60 parts of 200-mesh calcium-based bentonite; 40 parts of 200-mesh slaked lime. The preparation method is: uniformly mix the above-mentioned raw materials with a dry powder mixer to obtain the arsenic-removing material B agent.

[0033] Application of the water body arsenic removal material prepared in this example in the treatment of arsenic-containing wastewater

[0034] Take 500mL of an industrial arsenic-containing wastewater with an arsenic concentration of 6.07mg / L and a pH of 7, and place it in a 1L glass beaker. Add Age...

Embodiment 2

[0036] A water body arsenic removal material is composed of agent A and agent B at a mass ratio of 1:1.

[0037] Agent A includes the following raw materials in parts by weight: 80 parts of 120-mesh polyferric sulfate; 20 parts of 120-mesh polyaluminum chloride. Arsenic material A agent.

[0038] Agent B includes the following raw materials in parts by weight: 60 parts of 120-mesh calcium-based bentonite; 40 parts of 120-mesh slaked lime. The preparation method is: uniformly mix the above-mentioned raw materials with a dry powder mixer to obtain the arsenic-removing material B agent.

[0039] Application of the water body arsenic removal material prepared in this example in the treatment of arsenic-containing wastewater

[0040] Take 500mL of an industrial arsenic-containing wastewater with an arsenic concentration of 3.54mg / L and a pH of 6.9, and place it in a 1L glass beaker. Add Agent A and Agent B to the arsenic-containing wastewater. The final concentration in the wast...

Embodiment 3

[0042] A water body arsenic removal material is composed of agent A and agent B at a mass ratio of 1:1.

[0043]Agent A includes the following raw materials in parts by weight: 85 parts of 100 mesh polyferric sulfate; 15 parts of 80 mesh polyaluminum chloride. Arsenic material A agent.

[0044] Agent B includes the following raw materials in parts by weight: 55 parts of 120-mesh calcium-based bentonite; 45 parts of 120-mesh slaked lime. The preparation method is: uniformly mix the above-mentioned raw materials with a dry powder mixer to obtain the arsenic-removing material B agent.

[0045] Application of the water body arsenic removal material prepared in this example in the treatment of arsenic-containing wastewater

[0046] Take 500mL of an industrial arsenic-containing wastewater with an arsenic concentration of 12.18mg / L and a pH of 8.6, and place it in a 1L glass beaker. Add Agent A and Agent B to the arsenic-containing wastewater. The final concentration in the waste...

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Abstract

The invention discloses an arsenic-removing material for a water body and application thereof in treatment of arsenic-containing wastewater. The arsenic-removing material for the water body is prepared from an agent A and an agent B according to a mass ratio of 1 to 1, wherein the agent A is prepared by uniformly mixing 70 to 85 parts of polyferric sulfate, 15 to 25 parts of polyaluminium chloride, and 0 to 10 parts of sodium humate through a dry powder mixing machine; the agent B is prepared by uniformly mixing 55 to 70 parts of calcium-based bentonite and 30 to 50 parts of slaked lime through the dry powder mixing machine. The arsenic-removing material for the water body has the advantages that the arsenic-removing material can be widely applied to quickly and simply treat the arsenic-containing wastewater with various substrates and complicated form at site; the usage amount of material is small, the effect is outstanding, the stability is high, the environmental protection effect is realized, the cost is economic, the application range is wide, and the like.

Description

technical field [0001] The invention belongs to the technical field of arsenic-containing wastewater treatment, and in particular relates to a water body arsenic-removing material and its application in arsenic-containing wastewater treatment. Background technique [0002] Industrial production activities such as mining, metallurgy, chemical industry, printing and dyeing, and acid production produce a large amount of arsenic-containing wastewater. Arsenic, especially As(Ⅲ), is extremely toxic. If discharged directly without treatment, it will seriously damage the water environment and threaten human health. The efficient and stable treatment of arsenic-containing wastewater has attracted widespread attention. [0003] Traditional arsenic-containing wastewater treatment methods include chemical methods, physicochemical methods, and microbial methods. Physicochemical methods generally use ion exchange, adsorption, extraction, reverse osmosis, etc. to remove arsenic in wastewa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/62C02F101/20
CPCC02F1/62C02F2101/103C02F2101/20C02F2209/06
Inventor 朱慧可范丽梅章文贵侍孟璐奉向东
Owner 芜湖格丰环保科技研究院有限公司
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