Combined treatment device and process for acid-washing wastewater of stainless steel

A technology of pickling wastewater and treatment device, applied in the field of environmental engineering, can solve the problems of waste of resources, failure to meet discharge standards, fish death, etc., and achieve the effects of improved resin utilization, less blockage, and uniform water distribution

Inactive Publication Date: 2013-08-14
浙江晶泉水处理设备有限公司
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main hazard of acid-containing wastewater is to corrode hydraulic structures such as sewer pipes and reinforced concrete. Acid-containing wastewater seeps into the soil. After a long time, it will cause soil calcification and damage the loose state of the soil layer, thus affecting the growth of crops; acid-containing wastewater is discharged into the water body When the oxygen is taken away from the water, the living conditions of the fish and the self-purifying microorganisms participating in the self-purification of the water are destroyed, ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Combined treatment device and process for acid-washing wastewater of stainless steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the combined treatment device for stainless steel pickling wastewater includes a waste water tank 1, a filter 2 connected to the waste water tank, a primary cation exchanger 3 connected to the filter, and a secondary cation exchanger connected to the primary cation exchanger 4. The security filter 5 connected with the secondary cation exchanger and the reverse osmosis device 6 connected with the security filter also include a heavy metal gap separator 7 connected with the primary cation exchanger and the secondary cation exchanger. A circulation pipeline 11 is provided between the heavy metal gap separator and the waste water tank to transport the filtered water in the heavy metal gap separator to the waste water tank, and also includes a sludge thickening tank 10 connected with the heavy metal gap separator. The heavy metal gap separator has a sludge discharge pipe, the outlet of the sludge discharge pipe corresponds to the inlet of the sludg...

Embodiment 2

[0032] The stainless steel pickling wastewater combined treatment process adopts a stainless steel pickling wastewater combined treatment device, and the stainless steel pickling wastewater combined treatment device includes a waste water pool 1, a filter 2, a primary cation exchanger 3, a secondary cation exchanger 4, Security filter 5, reverse osmosis device 6, regenerated acid liquid tank 8, dosing device 9, heavy metal gap separator 7, and sludge thickening tank 10, including the following steps:

[0033] A. Send the stainless steel pickling waste water collected in the waste water pool to the filter to remove trace oil and solid suspended matter in the stainless steel pickling waste water;

[0034] B. The stainless steel pickling wastewater after removing trace oil and solid suspended matter through the filter is sequentially sent to the strong acid type primary cation exchanger and the strong acid type secondary cation exchanger, and a large amount of heavy metals are rem...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to combined treatment device and process for acid-washing wastewater of stainless steel, and belongs to the technical field of environment engineering, and solves the problem of environmental pollution and resource waste. The device comprises a wastewater pond, a filter connected with the wastewater pond, a primary cation exchanger connected with the filter, a secondary cation exchanger connected with the primary cation exchanger, a safety filter connected with the secondary cation exchanger and a reverse osmosis device connected with the safety filter. The first and second cation exchangers are provided with regenerated acid liquor adding ports. The device further comprises a heavy metal gas remover connected with the first and second cation exchangers. The heavy metal gas remover is provided with a settling agent adding port. A circulating pipeline for transporting filtered water in the heavy metal gas remover to the wastewater pond is arranged between the heavy metal gas remover and the wastewater pond. Wastewater meets the standard and is discharged, and wastes are recycled, so that the resources are greatly saved.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a combined treatment device and process for stainless steel pickling wastewater. Background technique [0002] In the manufacture of stainless steel, in order to remove the scale on the surface of the steel after annealing, a mixed acid made of nitric acid and hydrofluoric acid is generally used for surface cleaning, which is called pickling. With the development of the iron and steel industry and the surface treatment industry, the annual production of pickling waste liquid in the country exceeds one million cubic meters, and its pollution hazard is obvious. The main hazard of acid-containing wastewater is to corrode hydraulic structures such as sewer pipes and reinforced concrete. Acid-containing wastewater seeps into the soil. After a long time, it will cause soil calcification and damage the loose state of the soil layer, thus affecting the growth of crops; ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F9/04C02F103/16
Inventor 李杰陆方张丽芬胡勤阳王松林
Owner 浙江晶泉水处理设备有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap