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Bio-oxidization-method harmless treatment technology of arsenic-containing dangerous wastes

A harmless treatment and biological oxidation technology, applied in the field of environmental pollution control, can solve the problems of large area occupied by the aeration tank, low arsenic removal rate, high power consumption for stirring, etc., and achieve the effect of easily intercepting wind force

Active Publication Date: 2019-05-28
许立中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these arsenic-containing hazardous waste treatment methods do not have a high arsenic removal rate, so a method of biological oxidation treatment of arsenic-containing hazardous waste has emerged, but this method requires the use of a large number of aeration tanks, and the traditional aeration tank occupies a large area , and because of the need for stirring, the power consumption is also very large, the burden on the enterprise is heavy and a large amount of electricity is used, so more coal needs to be burned for power generation, which has certain disadvantages, so clean energy and special aeration are required Pool structure to reduce the loss of electric energy

Method used

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  • Bio-oxidization-method harmless treatment technology of arsenic-containing dangerous wastes

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Embodiment 1

[0061] Embodiment 1. This embodiment provides a process for the harmless treatment of arsenic-containing hazardous waste by biological oxidation, which includes the following steps:

[0062] S1. Oxidize the arsenic-containing waste, so that the trivalent arsenic in the waste is oxidized to pentavalent arsenic, which reduces the toxicity to microorganisms in the activated sludge; trivalent arsenic is highly toxic and has a significant toxic effect on microorganisms, so first carry out Oxidation, and there are many ways to oxidize trivalent arsenic to pentavalent arsenic, but I will not describe more.

[0063] S2. Put the oxidized arsenic-containing waste into the three-dimensional aeration tank, and add activated sludge in the three-dimensional aeration tank; the concentration of heavy metal ions in the added pentavalent arsenic waste should be less than 30 mg•L-1, so that the activated sludge has no effect on arsenic The removal rate of ions is higher.

[0064] S3. The three-...

Embodiment 2

[0068] Embodiment two, such as Figure 1 to Figure 14 As shown, it discloses that the three-dimensional aeration tank includes two matched reinforced concrete first columns 1, and several layers of aeration tanks 3 with a rectangular horizontal cross-section are arranged on the first column 1, and the aeration tanks 3 The vertical section is semicircular, and the space for installing the wind-driven rotating mechanism 4 is reserved between the upper and lower layers of the aeration tank 3. The aeration tank 3 is provided with a stirring device 2, and the wind-driven rotating mechanism 4 It is connected with the agitation device 2 in the aeration tank 3 on the upper floor. The side of the first column 1 is provided with a first drive motor 38 corresponding to the agitation device 2. A controller is provided in the control room corresponding to the first drive motor 38. . The aeration tank is set up in multiple layers, first of all, it occupies a small area, and secondly, it ca...

Embodiment 3

[0078] Embodiment 3. This embodiment provides an aeration method for a three-dimensional aeration tank, which includes the following steps:

[0079]A. Monitor the on-site wind force. When the wind force is greater than or equal to level 4, the tensioning mechanism tensions the belt, the first drive motor drives the rotating shaft to rotate, and the rotating rod is driven to rotate through the belt drive, so that the rotating rod is in a vertical state and slides The sleeve drives the windshield to move down under the action of gravity, and then the first drive motor exits, and the wind pushes the lower windshield to drive the rotating rod to rotate. When the rotating rod is horizontal, the sliding sleeve is located in the middle of the rotating rod under the action of the spring and rotates The rod continues to rotate, and at this time, the sliding sleeve will fall to the lower part of the rotating rod due to gravity, and continue to push the rotating rod to rotate in one direc...

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Abstract

The invention provides a bio-oxidization-method harmless treatment technology of arsenic-containing dangerous wastes. The bio-oxidization-method harmless treatment technology comprises the following steps: carrying out oxidization on arsenic-containing wastes; adding the oxidized arsenic-containing waste into a three-dimensional aeration tank; adding activated sludge into the three-dimensional aeration tank; matching the three-dimensional aeration tank with a mains supply driving motor through intercepted wind power to drive a stirring device and a gas feeding mechanism to stir the arsenic-containing wastes and the activated sludge in the aeration tank; after separating the activated sludge and clarified water, overflowing and discharging the clarified water, wherein the activated sludge is increased continuously in a treatment process and residual sludge in a sedimentation tank is discharged. According to the bio-oxidization-method harmless treatment technology, arsenic ions of the arsenic-containing wastes are adsorbed through the activated sludge so that the pollution, caused by the arsenic-containing wastes, on the environment is solved; a wind power direct driving manner is matched with a unique structure of the aeration tank, so that the function of the aeration tank is finished under the condition that electric energy is not needed or less electric energy is needed and secondary pollution to thermal power is reduced.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, in particular to a harmless treatment process of arsenic-containing hazardous waste biological oxidation method. Background technique [0002] Arsenic and its compounds are highly toxic carcinogens, so if it is not controlled, it will easily pollute the environment, and once the pollution is formed, it will be difficult to eliminate. Especially once arsenic pollutes the water body and soil, it will eventually enter the human body through the food chain or surface water and groundwater to endanger human health, and incidents of human and animal poisoning also occur from time to time. As the serious harm caused by arsenic-containing waste has become increasingly prominent in recent years, the world has begun to pay more attention to this environmental problem. How to research and develop an efficient and economical arsenic-containing waste treatment technology has great soci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D3/02A62D101/43
Inventor 许立中
Owner 许立中
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