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Circulation process of distilled water in recycling process of silicon cutting fluids

A distilled water and silicon cutting technology, which is applied in the field of solar photovoltaics, can solve the problems of unguaranteed recovery rate of cutting fluid and large environmental pollution, and achieve the effect of small investment, quick effect and strong practicability

Active Publication Date: 2014-04-16
JINKO SOLAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The development of the solar energy industry in recent years has shown that during the recovery process of cutting fluid in waste cutting pulp, distilled water with high COD will be produced in the distillation and dehydration process, and this part of the water will be directly discharged into the sewage treatment system in the conventional process; this method has great environmental pollution , the cutting fluid recovery rate cannot be guaranteed

Method used

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  • Circulation process of distilled water in recycling process of silicon cutting fluids

Examples

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Comparison scheme
Effect test

Embodiment 1

[0011] A kind of silicon cutting liquid reclaims the circulation process of distilled water, and the following parts are all expressed as parts by weight:

[0012] (1) The mortar 1 mixed with 450 parts of sand and 500 parts of water was settled and centrifuged at a centrifugal speed of 1200r / min to obtain 450 parts of settled sand, and the settled liquid was filtered and dehydrated to obtain distilled sewage 1 for later use;

[0013] (2) Add tap water to the separated distilled sewage 1 to form distilled water 2, take 300 parts of distilled water 2 and 450 parts of sedimentation sand separated in the previous step and mix to form mortar 2, and the mortar 2 is centrifugally dried at a speed of 1400r / min. Separated distilled sewage 3 and sand cake are standby;

[0014] (3) The separated distilled sewage 3 and 450 parts of sand are mixed into mortar 1 to form a distilled water circulation system.

Embodiment 2

[0016] A kind of silicon cutting liquid reclaims the circulation process of distilled water, and the following parts are all expressed as parts by weight:

[0017] (1) The mortar 1 mixed with 450 parts of sand and 500 parts of water was settled and centrifuged at a centrifugal speed of 1300r / min to obtain 450 parts of settled sand, and the settled liquid was filtered and dehydrated to obtain distilled sewage 1 for later use;

[0018] (2) Add tap water to the separated distilled sewage 1 to form distilled water 2, take 300 parts of distilled water 2 and 450 parts of sedimentation sand separated in the previous step and mix to form mortar 2, which is centrifugally dried at a speed of 1500r / min. Separated distilled sewage 3 and sand cake are standby;

[0019] (3) The separated distilled sewage 3 and 450 parts of sand are mixed into mortar 1 to form a distilled water circulation system.

Embodiment 3

[0021] A kind of silicon cutting liquid reclaims the circulation process of distilled water, and the following parts are all expressed as parts by weight:

[0022] (1) The mortar 1 mixed with 450 parts of sand and 500 parts of water was settled and centrifuged at a centrifugal speed of 1400r / min to obtain 450 parts of settled sand, and the settled liquid was filtered and dehydrated to obtain distilled sewage 1 for later use;

[0023] (2) Add tap water to the separated distilled sewage 1 to form distilled water 2, take 300 parts of distilled water 2 and 450 parts of sedimentation sand separated in the previous step and mix to form mortar 2, and the mortar 2 is centrifugally dried at a speed of 1600r / min. Separated distilled sewage 3 and sand cake are standby;

[0024] (3) The separated distilled sewage 3 and 450 parts of sand are mixed into mortar 1 to form a distilled water circulation system.

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Abstract

The invention provides a circulation process of distilled water in a recycling process of silicon cutting fluids. By means of simple process design, 100 % recycling is achieved, the distilled water is effectively complemented in various water utilization links, the whole recycling water and water discharging constitute a closed circulation system, direct discharging of sewage with high chemical oxygen demand (COD) is avoided, namely the cutting fluids are fully used, investment is little, effects are quickly achieved, and practicability is strong.

Description

technical field [0001] The invention relates to a recycling process for recovering distilled water from silicon cutting fluid, which belongs to the field of solar photovoltaics. Background technique [0002] The development of the solar energy industry in recent years has shown that in the process of recycling cutting fluid from waste cutting pulp, distilled water with high COD will be produced in the distillation and dehydration process, and this part of the water will be directly discharged into the sewage treatment system in the conventional process; this method has great environmental pollution , The recovery rate of cutting fluid cannot be guaranteed. Contents of the invention [0003] The purpose of the present invention is to provide a recycling process for distilled water recovery from silicon cutting fluid, which can achieve 100% recycling through simple process design, effectively replenish distilled water in each water link, and the entire recycled water and dra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M175/00C02F9/10
Inventor 石振亮郑金发
Owner JINKO SOLAR CO LTD