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Silt and sewage treatment method

A sewage treatment method, mud and sand technology, applied in water/sludge/sewage treatment, water/sewage multi-stage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of long drying time, long sedimentation time, sludge High water content and other problems, to achieve high water purification efficiency and good water purification effect

Inactive Publication Date: 2010-05-19
湖州鹿山坞矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the three-stage sedimentation has many disadvantages. First, the sedimentation time is longer; second, the cleared silt contains more sandy components and other useful substances, and resources are lost in vain; third, the cleared silt has a high moisture content. , must be naturally dried before treatment, but the drying time is too long, not only occupying a large area of ​​land, but also may cause environmental pollution

Method used

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Effect test

Embodiment 1

[0042] A mud sand sewage treatment method, the sewage is produced by washing crushed stones in a quarry, which contains a large amount of mud sand with a solid content of about 4%. In this embodiment, the sewage discharged from the production line is directly treated, and the sewage flows through the coarse sand separation device, the fine sand separation device, the primary flocculant adding device, and the secondary flocculant adding device. The above devices treat the sewage in sequence.

[0043] Firstly, sand separation is performed on the above-mentioned sewage, and the above-mentioned sand separation step includes a primary separation step and a secondary separation step. The primary separation step uses spiral centrifugation to separate the coarse sand in the sewage, and the secondary separation uses a cyclone group and a high-frequency vibration device to separate the fine sand in the sewage.

[0044] Preparation of anionic polyacrylamide solution: add water to a cont...

Embodiment 2

[0049] A mud sand sewage treatment method, the sewage is produced by washing crushed stones in a quarry, which contains a large amount of mud sand with a solid content of about 5%. In this embodiment, the sewage discharged from the production line is directly treated, and the sewage flows through the coarse sand separation device, the fine sand separation device, the primary flocculant adding device, and the secondary flocculant adding device. The above devices treat the sewage in sequence.

[0050] Firstly, sand separation is performed on the above-mentioned sewage, and the above-mentioned sand separation step includes a primary separation step and a secondary separation step. The primary separation step uses spiral centrifugation to separate the coarse sand in the sewage, and the secondary separation uses a cyclone group and a high-frequency vibration device to separate the fine sand in the sewage.

[0051] Preparation of anionic polyacrylamide solution: add water to the co...

Embodiment 3

[0056] A mud sand sewage treatment method, the sewage is produced by washing crushed stones in a quarry, which contains a large amount of mud sand with a solid content of about 4.5%. In this embodiment, the sewage discharged from the production line is directly treated, and the sewage flows through the coarse sand separation device, the fine sand separation device, the primary flocculant adding device, and the secondary flocculant adding device. The above devices treat the sewage in sequence.

[0057] Firstly, sand separation is performed on the above-mentioned sewage, and the above-mentioned sand separation step includes a primary separation step and a secondary separation step. The primary separation step uses spiral centrifugation to separate the coarse sand in the sewage, and the secondary separation uses a cyclone group and a high-frequency vibration device to separate the fine sand in the sewage.

[0058] Preparation of anionic polyacrylamide solution: add water to a co...

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Abstract

The invention relates to a silt and sewage treatment method, and belongs to the technical field of mine sewage treatment. The method comprises the following steps: (1) performing silt separation, namely performing primary separation on the silt and the sewage, and separating sand out; (2) performing sedimentation treatment, namely adding 0.2 to 0.4 mass percent solution of anionic polyacrylamide into the sewage, then adding 0.1 to 0.3 mass percent solution of anionic polyacrylamide into the sewage after sediment is generated, and separating the sediment out; and (3) performing sediment filter pressing, namely filter-pressing the sediment separated out by the step (2). The method of the invention effectively solves the mine sewage treatment problem, and separates three useful substances out comprising coarse sand, fine sand and sludge so as to increase the creation income of the enterprise.

Description

technical field [0001] The invention relates to a mud sand sewage treatment method, which belongs to the technical field of mine sewage treatment. Background technique [0002] The treatment of sewage generated by washing gravel has always been a major problem for mining enterprises. The traditional method generally uses three-stage sedimentation tanks to treat sewage. This method has been used in many mining enterprises until now. However, the three-stage sedimentation has many disadvantages. First, the sedimentation time is longer; second, the cleared silt contains more sandy components and other useful substances, and resources are lost in vain; third, the cleared silt has a high moisture content. , must be naturally dried before treatment, but the drying time is too long, not only occupying a large area of ​​land, but also may cause environmental pollution. Contents of the invention [0003] The object of the present invention is to provide a method for treating mud ...

Claims

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Application Information

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IPC IPC(8): C02F9/02C02F1/56C02F11/12
Inventor 张长贵
Owner 湖州鹿山坞矿业有限公司
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