Technology and system for removing silicon from silicon-containing wastewater

A technology for silicon treatment and waste water, applied in the field of silicon-containing waste water desiliconization treatment process and system, can solve the problems of increasing the cost of treatment process chemicals, reducing the service life of equipment, corrosion damage to operating equipment, etc., to improve resource reuse, avoid Pollution, the effect of effective treatment

Active Publication Date: 2020-01-24
DONGGUAN SANRENXING ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The current silicon-containing wastewater treatment methods basically use silicon-removing agents, coagulants, lime, and sodium carbonate. The cost of chemicals in the treatment process; on the other hand, it is easy to cause secondary pollution to the water after silicon removal treatment, and cause certain corrosion damage to the operating equipment, reducing the service life of the equipment

Method used

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  • Technology and system for removing silicon from silicon-containing wastewater
  • Technology and system for removing silicon from silicon-containing wastewater
  • Technology and system for removing silicon from silicon-containing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A process for removing silicon from silicon-containing wastewater, comprising the steps of:

[0034](1) Collect the coalification silicon-containing raw water into the raw water collection pool 1, use the lift pump 2 to pump the coalification silicon-containing raw water to the electrolytic tank 3 for electrolytic treatment, and then place the electrolytically treated water body in the sedimentation tank 4, naturally static stratification;

[0035] (2) discharging the lower sediment after the layered treatment in step (1), and reclaiming or waiting to discharge the supernatant after the layered treatment;

[0036] In described step (1), the current density of electrolytic treatment is 40A / m 2 , the voltage is 2V, and the electrolytic treatment time is 60min.

[0037] See attached Figure 1-2 , a treatment system for removing silicon from silicon-containing wastewater, used to implement the above-mentioned silicon-containing wastewater treatment process for removing s...

Embodiment 2

[0043] The difference between this embodiment and above-mentioned embodiment 1 is:

[0044] In described step (1), the current density of electrolytic treatment is 45A / m 2 , the voltage is 3V, and the electrolytic treatment time is 50min.

Embodiment 3

[0046] The difference between this embodiment and above-mentioned embodiment 1 is:

[0047] In described step (1), the current density of electrolytic treatment is 50A / m 2 , the voltage is 4V, and the electrolytic treatment time is 40min.

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Abstract

The invention relates to the technical field of water treatment, and concretely relates to a technology and a system for removing silicon from silicon-containing wastewater. The technology for removing silicon from silicon-containing wastewater comprises the following steps: (1) collecting coalified silicon-containing raw water into a raw water collection tank, pumping the coalified silicon-containing raw water into an electrolytic tank by using a lifting pump, electrolyzing the raw water, then putting the electrolyzed water into a sedimentation tank, and naturally standing for layering; and (2) discharging layered lower-layer sediments obtained in step (1), and recovering or waiting for discharging a supernatant obtained after the layering treatment. In the step (1), the current density of the electrolysis treatment is 40-60 A / m<2>, the voltage is 2-5 V, and the electrolysis treatment time is 30-60 min. The technology for removing silicon from silicon-containing wastewater has the advantages of simplicity in operation, no addition of chemical agents in the treatment process, and avoiding of secondary pollution to the environment, makes the silicon removal treatment rate reach up to 99% or above, and is suitable for large-scale treatment.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a silicon-removing treatment process and system for silicon-containing wastewater. Background technique [0002] The current silicon-containing wastewater treatment methods basically use silicon-removing agents, coagulants, lime, and sodium carbonate. The cost of chemicals in the treatment process; on the other hand, it is easy to cause secondary pollution to the water after silicon removal treatment, and cause certain corrosion damage to the operating equipment, reducing the service life of the equipment. Contents of the invention [0003] In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide a silicon-containing wastewater treatment process for silicon removal, which is simple to operate, does not need to add chemicals during the treatment process, and avoids secondary pollution of the environment. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06B01D71/34B01D67/00
CPCC02F1/46104C02F1/463C02F1/52C02F1/60C02F9/00B01D71/34B01D67/0088C02F2001/46133C02F2201/46135C02F2201/4614C02F2201/4615C02F1/44C02F2303/14
Inventor 焦伟丽曹志
Owner DONGGUAN SANRENXING ENVIRONMENTAL TECH CO LTD
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