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Seawater coagulation turbidity removing system

A technology of seawater and coagulation, which is applied in the direction of sedimentation tanks, feeding/discharging devices of sedimentation tanks, chemical instruments and methods, etc. It can solve the problem that the quality of effluent water cannot meet the production process, the dosage is inaccurate, and it is difficult to control in real time, etc. problem, to achieve the effect of precise control of dosing amount, guarantee of effluent quality, and high degree of automation

Inactive Publication Date: 2012-03-07
ZHEJIANG MARINE DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is still based on empirical data to add flocculants and coagulants and other agents, there are problems such as inaccurate dosing amount, dosing lag, etc., and it is difficult to control in real time, especially when the raw sea water quality fluctuates greatly, the effluent water quality is difficult to meet the follow-up production craft needs

Method used

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  • Seawater coagulation turbidity removing system
  • Seawater coagulation turbidity removing system
  • Seawater coagulation turbidity removing system

Examples

Experimental program
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Effect test

Embodiment 1

[0037] like figure 1 A seawater coagulation and turbidity removal system shown includes a raw water pump 1 connected to raw seawater, a pipeline mixer 2, a flocculant dosing pump 3, a coagulant aid dosing pump 4, a sludge discharge tank 5, and a coagulation and sedimentation pump. The device 6 and the PLC controller 7, the raw water pump 1, the pipeline mixer 2 and the coagulation and sedimentation device 6 are connected through pipelines in turn, and the output port of the flocculant dosing pump 3 and the output port of the coagulant dosing pump 4 are respectively passed through The pipeline is connected to the dosing port of the pipeline mixer 2, and the input port of the flocculant dosing pump 3 and the input port of the coagulant dosing pump 4 are respectively connected to the flocculant (ferric chloride) filled flocculant through the pipeline. Agent pool 31 and coagulant aid pool 41 equipped with coagulant (polyacrylamide), flocculant dosing pump 3 and coagulant dosing pu...

Embodiment 2

[0041] The difference between this embodiment and embodiment 1 is that a mud circulation pump 11 is also provided between the coagulation sedimentation device 6 and the mud discharge tank 5 (such as figure 2 shown), the output port of the mud circulation pump 11 is connected to the water inlet 65 of the coagulation and sedimentation device through a pipeline, and the input port of the mud circulation pump 11 is connected to the mud discharge tank 5 through a pipeline, and the mud discharge tank 5 is equipped with a liquid level The sensor 12 and the liquid level sensor 12 are connected with the PLC controller 7 . The flocculant dosing pump 3 and the coagulant dosing pump 4 are all pumps without metering function. 2 are provided with a flow sensor 13 on the connecting pipeline, the flow sensor 13 is connected with the PLC controller 7, the flocculant is a mixture of ferric chloride and composite polyferric, and the coagulation aid is a mixture of polyacrylamide and bone glue. ...

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Abstract

The invention discloses a seawater coagulation turbidity removing system. With existing seawater purifying apparatuses, when sea water quality fluctuation is large, the quality of obtained water is hard to satisfy the requirement of subsequent production processes. The invention aims at solving the problem. The system comprises a raw water pump communicating with raw seawater, a pipeline mixer, a flocculating agent dosing pump, a coagulant aid dosing pump, a sludge discharging tank, a coagulative precipitating apparatus, and a PLC controller. The raw water pump, the pipeline mixer, and the coagulative precipitating apparatus are sequentially connected by using pipelines. An input water detecting device is arranged on the connecting pipeline between the raw water pump and the pipeline mixer. A discharged water turbidity sensor is arranged on a water outlet of the coagulative precipitating apparatus. The flocculating agent dosing pump, the coagulant aid dosing pump, the input water detecting device and the discharged water turbidity sensor are respectively connected to the PLC controller. With the system provided by the invention, the agent dosage can be precisely controlled according to the turbidity variation of the raw seawater. Therefore, quality of treated seawater can satisfy the requirement of subsequent production processes. The operation of the system is simple, and the automaticity of the system is high.

Description

technical field [0001] The invention relates to the technical field of raw seawater purification, in particular to a seawater coagulation and turbidity removal system. Background technique [0002] Before desalination of seawater by reverse osmosis, it is necessary to remove suspended sediment, plankton, colloid, oil and other substances in seawater. At present, most of the operations in the process of seawater purification are based on experience and manual operations. Since flocculants, coagulants and other agents are added based on empirical data, there are problems such as inaccurate dosing and lag in dosing. It is difficult to control in real time, especially when the quality of raw seawater fluctuates greatly, and the quality of effluent water cannot meet the needs of subsequent production processes. [0003] The invention of Publication No. CN1061765A discloses a seawater turbidity removal method and device, which uses an inclined tube pulse clarifier in fresh water ...

Claims

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Application Information

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IPC IPC(8): B01D21/08B01D21/24B01D21/32
Inventor 张海春王波范会生郁小芬陆阿定孙保库孙兆栋
Owner ZHEJIANG MARINE DEV RES INST
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