Portable multi-line adsorption treatment device and method for low-concentration heavy metal-containing farmland wastewater

An adsorption treatment and heavy metal technology is applied in the field of portable adsorption treatment devices for multi-channel farmland low-concentration heavy metal-containing sewage, which can solve the problems of unsuitable farmland low-concentration heavy metal-containing sewage treatment, large floor space, complex process, etc. Adsorption effect and water outlet speed, low cost, satisfying the effect of water inlet and water outlet speed

Inactive Publication Date: 2019-04-12
SICHUAN AGRI UNIV
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  • Abstract
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Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a multi-channel portable adsorption treatment device for low-concentration heavy metal-containing sewage in farmland, which solves the problems of high cost, large floor area, complicated process, and unsuitability for low-concentration heavy metal-containing sewage in the prior art. The problem of heavy metal sewage treatment

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  • Portable multi-line adsorption treatment device and method for low-concentration heavy metal-containing farmland wastewater
  • Portable multi-line adsorption treatment device and method for low-concentration heavy metal-containing farmland wastewater

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Embodiment 1

[0035] as attached figure 1 As shown, this embodiment discloses the multi-channel portable adsorption treatment device for farmland low-concentration heavy metal-containing sewage according to the present invention. Sewage containing heavy metals has a good treatment effect, low cost, wide practicability and strong scalability. The multi-channel portable adsorption treatment device for farmland low-concentration heavy metal-containing sewage of the present invention includes a heavy metal sewage water delivery pipe 1, three adsorption pipelines 2 respectively connected to the heavy metal sewage water delivery pipe 1, and an external discharge pipe 3 for treated water. The heavy metal sewage water delivery pipe 1 is provided with a water pump 4 for pumping the heavy metal sewage in the heavy metal sewage water delivery pipe 1 into the three adsorption pipelines 2 respectively, and the three adsorption pipelines 2 are distributed in parallel, and the treatment The water dischar...

Embodiment 2

[0040] This embodiment discloses a method for the treatment of farmland low-concentration heavy metal-containing sewage, which is carried out by using the device described in Embodiment 1, including the following steps:

[0041] Step A. Sewage diversion: The low-concentration heavy metal sewage in the farmland enters the three adsorption pipelines through the heavy metal sewage water delivery pipe under the action of the water pump;

[0042] Step B. Primary adsorption treatment: After the farmland low-concentration heavy metal sewage enters the adsorption pipeline, the soil particles and suspended solids in the sewage are firstly removed under the action of the quartz sand in the primary adsorption pipeline;

[0043] Step C. Secondary adsorption treatment: the sewage after the primary adsorption treatment enters the secondary adsorption pipeline, and removes part of the heavy metal ions in the sewage under the action of the cation exchange resin;

[0044] Step D. Tertiary adsorp...

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Abstract

The invention discloses a portable multi-line adsorption treatment device and method for low-concentration heavy metal-containing farmland wastewater, providing a solution for the problems of a heavymetal-containing wastewater adsorption device in the prior art, such as high cost, large floor space, complex process, and unfit for low-concentration heavy metal-containing farmland wastewater treatment. The treatment device of the invention comprises a heavy metal-containing wastewater delivery pipe, three adsorption lines, and a treated water discharge pipe. A water pump is arranged on the heavy metal-containing wastewater delivery pipe; the three adsorption lines are distributed in parallel, and the treated water discharge pipe is connected to the three adsorption lines, respectively. Theadsorption lines comprise a first-stage adsorption line, a second-stage adsorption line and a third-stage adsorption line which are in sequential piping connection with one another along a heavy metal-containing wastewater flow direction, with the first-stage adsorption line being filled with quartz sand, the second-stage adsorption line filled with cation exchange resin and the third-stage adsorption line filled with a molecular sieve. The portable multi-line adsorption treatment device and method for low-concentration heavy metal-containing farmland wastewater have the advantages of simple structure, convenience of handling, simple treatment process, good treatment effect, and low cost.

Description

technical field [0001] The invention relates to the technical field of farmland low-concentration heavy metal-containing sewage treatment, in particular to a multi-channel portable adsorption treatment device and method for farmland low-concentration heavy metal-containing sewage. Background technique [0002] With industrial development and economic growth, soil heavy metal pollution has gradually become a major global concern, and heavy metal pollution in farmland soil is directly related to human health, food safety and other issues. Due to rainwater leaching, agricultural irrigation and other reasons, heavy metal-contaminated soil will produce a large amount of low-concentration heavy metal-containing sewage, which will pollute groundwater and rivers. Although the heavy metal ions entering the water body have a low concentration and are not highly toxic, they are difficult to degrade and can produce more toxic organic compounds, such as methylmercury, under the action of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/20
CPCC02F1/281C02F1/42C02F1/66C02F9/00C02F2001/425C02F2101/20C02F2301/08
Inventor 张世熔冯伟进刘西萌王怡君张瑞琪钟钦梅冯灿马小杰王贵胤潘小梅徐小逊
Owner SICHUAN AGRI UNIV
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