Landscape water body emergency treatment method based on magnetic loading coagulation technology

An emergency treatment and magnetic loading technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem that the treatment effect needs to be improved and the coagulant consumption is too much sludge and other problems, to achieve the effect of good water discharge, saving consumption and high coagulation efficiency

Inactive Publication Date: 2015-03-18
TIANJIN MUNICIPAL ENG DESIGN & RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of adding coagulant to the water body has the advantages of less investment and easy operation. It is suitable for water bodies containing a large amount of suspended solids and algae, but the coagulant consumption and the generated sludge are more, and the treatment effect is still to be determined. improve

Method used

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  • Landscape water body emergency treatment method based on magnetic loading coagulation technology
  • Landscape water body emergency treatment method based on magnetic loading coagulation technology
  • Landscape water body emergency treatment method based on magnetic loading coagulation technology

Examples

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Effect test

Embodiment 1

[0024] A method for emergency treatment of landscape water bodies based on magnetically loaded coagulation technology, comprising the following steps:

[0025] (1) Pass the landscape water body to be treated (raw water in Table 1) into the reaction tank, add magnetic powder and polyaluminium chloride (coagulant) in sequence in the reaction tank, and under the condition of a stirring speed of 120r / min Stir for 45s;

[0026] (2) Add polyacrylamide (coagulant aid), and stir for 6 minutes at a stirring speed of 60r / min; stop stirring, settle for 25 minutes, drain clean water (the effluent in Table 1), and remove the sludge from the reaction tank Discharge and recover magnetic powder.

[0027] The dosage of magnetic powder is 100mg / L of the landscape water body;

[0028] The dosage of polyaluminium chloride is 30mg / L of described landscape water body;

[0029] The dosage of polyacrylamide is 1.0 mg / L of the landscape water body.

[0030] The removal rate of turbidity, color, CO...

Embodiment 2

[0034] A method for emergency treatment of landscape water bodies based on magnetically loaded coagulation technology, comprising the following steps:

[0035] (1) Put the landscape water body to be treated (raw water in Table 2) into the reaction tank, add magnetic powder and polyaluminium chloride in sequence in the reaction tank, and stir at 80r / min, 120r / min, 150r Stirring for 45s under the conditions of / min and 200r / min;

[0036] (2) Add polyacrylamide, stir for 6 minutes at a stirring speed of 60r / min; stop stirring, settle for 25 minutes, drain clean water (outlet water in Table 2), discharge sludge from the reaction tank, and recover magnetic powder.

[0037] The dosage of magnetic powder is 50mg / L of the landscape water body;

[0038] The dosage of polyaluminium chloride is 40mg / L of described landscape water body;

[0039] The dosage of polyacrylamide is 1.0 mg / L of the landscape water body. ,

[0040] The removal rate of turbidity, color, COD, ammonia nitrogen,...

Embodiment 3

[0044] A method for emergency treatment of landscape water bodies based on magnetically loaded coagulation technology, comprising the following steps:

[0045] (1) Pass the landscape water body to be treated (raw water in Table 3) into the reaction tank, add magnetic powder and polyaluminium chloride in sequence in the reaction tank, and stir for 45 seconds at a stirring speed of 120r / min;

[0046] (2) Add polyacrylamide, and stir for 6 minutes at the stirring speed of 40r / min, 60r / min, and 80r / min; The mud is discharged from the reaction tank and the magnetic powder is recovered.

[0047] The dosage of magnetic powder is 50mg / L of the landscape water body;

[0048] The dosage of polyaluminium chloride is 40mg / L of described landscape water body;

[0049] The dosage of polyacrylamide is 1.0 mg / L of the landscape water body.

[0050] The removal rate of turbidity, color, COD, ammonia nitrogen, total phosphorus, and total nitrogen is used as indicators, and the results are sh...

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Abstract

The invention discloses a landscape water body emergency treatment method based on a magnetic loading coagulation technology. The landscape water body emergency treatment method comprises the following steps: (1) guiding the landscape water body to be treated into a reaction tank, orderly feeding magnetic powder and polyaluminum chloride to the reaction tank, and stirring for 30-90 seconds under the condition of a stirring speed of (80-200)r/min; (2) adding polyacrylamide and stirring for 4-10 minutes under the condition of a stirring speed of (40-80)r/min; stopping stirring, and after static settling for 25-60 minutes, discharging clear water, discharging sludge from the reaction tank and recovering the magnetic powder. The landscape water body emergency treatment method based on the magnetic loading coagulation technology is simple to operate, low in dosage of a coagulant, high in coagulation efficiency, short in floc static settling time and good in water yielding effect. The precipitation of suspended solid substances is accelerated by virtue of magnetic loading, and therefore, pollutants in the water can be effectively removed; the recovered magnetic powder can be recycled and can be applied to improvement of the water quality of the landscape water body, particularly emergency treatment.

Description

technical field [0001] The invention belongs to the field of environmental engineering, in particular to an emergency treatment method for landscape water bodies based on magnetic loading coagulation technology. Background technique [0002] With the continuous development of urban construction, more and more landscape water bodies with ecological value and aesthetic functions have appeared. However, since the landscape water body is easily polluted (sewage and wastewater discharge, surface runoff), and the self-purification ability of the water body is poor, the non-point source pollution caused by rainfall will deteriorate the water quality of the water body, and many water bodies will suffer from algal blooms, even black and smelly, seriously affecting the water body ecology and surroundings. [0003] In the face of sudden deterioration of landscape water quality, or water quality deterioration caused by sudden water pollution, timely and effective emergency plans and me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56
CPCC02F1/5209C02F1/56
Inventor 赵乐军郭超宋连朋王秀朵潘留明李振强
Owner TIANJIN MUNICIPAL ENG DESIGN & RES INST
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