Pretreatment method for plate-frame pressure filtration of bloom-forming cyanobacteria

A technology of blooming blue-green algae and blue-green algae board, which is applied in water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, sludge treatment, etc. It can solve the problems of unable to deal with water-blooming blue-green algae mud, and achieve a boost pressure filter effect, reduce cell elasticity, and reduce the effect of water-holding ability

Active Publication Date: 2019-04-19
无锡市水务集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems in the prior art, the present invention provides a pretreatment method for plate and frame filter press of water bloom cyanobacteria, which solves the problem that the prior art cannot handle water bloom cyanobacteria mud with a water content of 85-90%. The multi-reaction method pre-treats the algal blooms, which not only facilitates the subsequent plate and frame filter press, but also improves the filter press effect

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  • Pretreatment method for plate-frame pressure filtration of bloom-forming cyanobacteria

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Embodiment 1

[0026] A pretreatment method for water bloom cyanobacteria plate and frame filter press, comprising the following steps:

[0027] Step 1, diluting and stirring the initial algae mud after pre-dehydration of the bloom cyanobacteria to an algae-water mixture with a water content of 95%;

[0028] Step 2, adding ferrous sulfate powder and hydrogen peroxide to the above-mentioned algae-water mixture in sequence, and fully stirring to obtain a mixture A;

[0029] In step 3, the polyaluminum ferric chloride agent and quicklime are sequentially added to the mixed solution A and stirred evenly to obtain a preconditioned water bloom cyanobacteria solution.

[0030] The water content of the initial algae mud after the pre-dehydration of the bloom cyanobacteria in the step 1 is 85-90%.

[0031] The initial algae mud after the pre-dehydration of the bloom cyanobacteria in the step 1 is diluted to a 95% algae-water mixture by adding water.

[0032] The adding quality of the ferrous sulfat...

Embodiment 2

[0039] A pretreatment method for water bloom cyanobacteria plate and frame filter press, comprising the following steps:

[0040] Step 1, diluting and stirring the initial algae mud after pre-dehydration of the bloom cyanobacteria to an algae-water mixture with a water content of 95%;

[0041] Step 2, adding ferrous sulfate powder and hydrogen peroxide to the above-mentioned algae-water mixture in sequence, and fully stirring to obtain a mixture A;

[0042] In step 3, the polyaluminum ferric chloride agent and quicklime are sequentially added to the mixed solution A and stirred evenly to obtain a preconditioned water bloom cyanobacteria solution.

[0043] The water content of the initial algae mud after the pre-dehydration of the bloom cyanobacteria in the step 1 is 85-90%.

[0044] The initial algae mud after the pre-dehydration of the bloom cyanobacteria in the step 1 is diluted to a 95% algae-water mixture by adding water.

[0045] The addition quality of the ferrous sulf...

Embodiment 3

[0052] A pretreatment method for water bloom cyanobacteria plate and frame filter press, comprising the following steps:

[0053] Step 1, diluting and stirring the initial algae mud after pre-dehydration of the bloom cyanobacteria to an algae-water mixture with a water content of 95%;

[0054] Step 2, adding ferrous sulfate powder and hydrogen peroxide to the above-mentioned algae-water mixture in sequence, and fully stirring to obtain a mixture A;

[0055] In step 3, the polyaluminum ferric chloride agent and quicklime are sequentially added to the mixed solution A and stirred evenly to obtain a preconditioned water bloom cyanobacteria solution.

[0056] The water content of the initial algae mud after the pre-dehydration of the bloom cyanobacteria in the step 1 is 85-90%.

[0057] The initial algae mud after the pre-dehydration of the bloom cyanobacteria in the step 1 is diluted to a 95% algae-water mixture by adding water.

[0058] The adding quality of the ferrous sulfat...

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Abstract

The invention belongs to the technical field of environmental engineering, and relates to the technical field of treatment of bloom-forming cyanobacteria, in particular to a pretreatment method for plate-frame pressure filtration of bloom-forming cyanobacteria. The method comprises the following steps of 1, diluting and stirring initial-stage cyanobacteria mud which is obtained after bloom-formingcyanobacteria is pre-dehydrated into a cyanobacteria-water mixed liquid with the moisture content of 95%; 2, sequentially adding ferrous sulfate powder and hydrogen peroxide into the cyanobacteria-water mixed liquid, and conducting sufficient stirring to obtain a mixed solution A; 3, sequentially adding polyaluminum ferric chloride chemicals and quick lime into the mixed solution A, and uniformlystirring the materials to obtain the pre-adjusted bloom-forming cyanobacteria liquid. By means of the method, the problem in the prior art that bloom-forming cyanobacteria mud with the moisture content of 85-90% cannot be disposed is solved; through dilution and multiple reaction modes, bloom-forming cyanobacteria is pretreated, subsequent plate-frame pressure filtration is facilitated, and the pressure filtration effect can also be improved.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, relates to the technical field of water bloom cyanobacteria treatment, in particular to a pretreatment method of water bloom cyanobacteria plate and frame filter press. Background technique [0002] In recent years, many lakes in my country have shown a trend of eutrophication, Dianchi Lake and Taihu Lake are the most typical. These lakes often have blooms of cyanobacteria, which affect drinking water safety and the ecological environment. At present, the control methods for excessive blooms of cyanobacteria in water bodies at home and abroad can be divided into physical methods, chemical methods and biological methods. The physical method with salvage as the main measure is one of the commonly used means to control algae blooms in China at present. The algae-enriched water salvaged or filtered is a liquid with a water content of 98-99%. During the bloom period of cyanobacteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/143C02F11/145
CPCC02F11/14
Inventor 施昱朱浴宇陶宁钱铖斌孙伟
Owner 无锡市水务集团有限公司
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