Cloth grass washing process

A linen and process technology, applied in the field of washing technology, can solve problems such as urban groundwater intrusion, and achieve the effect of reducing pollution and saving water resources

Inactive Publication Date: 2007-12-12
BEIJING NIUSHIDAN WHITE WASHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, washing sewage needs to be discharged after washing linen. Since the sewage contains a large amount of organic matter, it will cause damage to urban groundwater. How to reduce the impact of linen washing sewage on the environment is also a problem that the linen washing industry must solve

Method used

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  • Cloth grass washing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Fig. 1 shows the process flow chart of linen washing process of the present invention. Firstly, the linen to be washed is classified according to texture and degree of dirt; when classified according to texture, it is classified into bed sheets, towels, surgical fabrics, white coats, etc., and according to the degree of dirt, it can be divided into heavy dirt, medium dirt and light dirt. After classification, the linen is disinfected first, and then the linen is preliminarily washed with the water in the clear water reservoir. The equipment used is a tunnel washing machine, the washing water temperature is 30-80°C, and the washing time is 5-10 minutes. The ratio of the main lotion: detergent: carburetor: oxygen bleaching liquid: softener: acid neutralizer = 0.75~2:0.25~1:0~1:0~0.75:0~1:0.25 ~0.5, discharge the pre-washed sewage into the sewage storage tank. Then use the water in the clear water reservoir to further wash the prewashed linen. The equipment used is a tunn...

Embodiment 2

[0026] In the pre-wash and main wash stages, different detergent ratios should be selected according to the different textures of the linen. Taking bed sheets, towels, surgical fabrics, and white coats as examples, the ratios are listed in the table below.

[0027] main lotion

Embodiment 3

[0029] The waste water in the sewage storage tank is treated as follows: first use polyferric sulfate with a mass concentration of 600mg / l for flocculation and sedimentation, then filter the supernatant, and use ozone with a concentration of 8mg / l to oxidize and sterilize. After the pH value reaches 7.0-7.5, it is discharged into the clear water reservoir for standby. Sampling tests were carried out on the water quality before and after wastewater treatment, and the results are listed in the table below.

[0030] pH

[0031] The various water quality indicators in the table above indicate that the treated wastewater can be used for laundry water.

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PUM

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Abstract

The invention discloses a cloth straw washing process, it includes screening and sorting, pre-washing, washing, second sterilizing, rinsing and dewatering, quality testing, drying, ironing, sanitary testing, folding and packaging , storing, sewage processing and washing. The invention circulates and uses the sewage after the washing sewage is purified and processed through advanced technology flow process, it saves water resources as much as possible, reduces the environmental pollution from washing sewage; at the same time, it can monitor and control the quality and sanitary index of washing materials in the washing technology, ensure the washed cloth straw in the technology flow process meet various testing index all over state.

Description

technical field [0001] The invention relates to a washing process, in particular to a washing process for linen such as quilts, bed sheets, towels, and white coats used in service industries such as hotels and hospitals. Background technique [0002] Linen refers to all cotton textiles used in hotels, hotels, hospitals and other service industries, including bed sheets, quilts, pillowcases, towels, bath towels, white coats, etc. At present, the amount of linen in my country is relatively large, and a large amount of water resources are consumed when washing linen. In the case of extreme shortage of water resources in my country, how to save limited water resources and ensure the quality of washing is an urgent problem to be solved in the linen washing industry. In addition, washing sewage needs to be discharged after washing linen. Since the sewage contains a large amount of organic matter, it will cause damage to urban groundwater. How to reduce the impact of linen washing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F23/00D06F35/00A61L2/07A61L2/20C02F1/52A61L101/10
Inventor 郎中
Owner BEIJING NIUSHIDAN WHITE WASHING TECH
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