Cold Rolling Pickling Wastewater Recycling Process System

A technology of pickling wastewater and treatment process, which is applied in the field of resource treatment process system, can solve the problems such as the inability to achieve resource utilization of wastewater, and achieve the effect of high degree of automatic operation of equipment, reduction of total hardness, and favorable effect of advanced treatment

Active Publication Date: 2018-08-31
BAOSHAN IRON & STEEL CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process still produces a small part of concentrated water, which cannot achieve the complete resource utilization of wastewater

Method used

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  • Cold Rolling Pickling Wastewater Recycling Process System
  • Cold Rolling Pickling Wastewater Recycling Process System
  • Cold Rolling Pickling Wastewater Recycling Process System

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Experimental program
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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] The total oil in the pickling wastewater is ≤1.0mg / L, the suspended matter is ≤50mg / L, the iron ion is ≤5000mg / L, and the acidity is 0.5-2%. Cold rolling pickling wastewater resource treatment process system, including: raw water tank, water inlet pump, filter, cation exchange resin bed, product water tank, product water delivery pump, acid tank, acid delivery pump, pure water tank, pure water Transfer pump, regeneration liquid collection tank, regeneration liquid transfer pump, waste liquid tank, waste water transfer pump.

[0030] The filter is made of PVDF material. When the pressure difference between the inlet and outlet of the filter reaches the limit value, the original design flux can be restored by feeding compressed air or steam for cleaning. PVDF (polyvinylidene fluoride) filters have excellent mechanical properties, good toughness,...

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PUM

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Abstract

The invention relates to a cold rolling and acid pickling wastewater resourceful treatment process system. The cold rolling and acid pickling wastewater resourceful treatment process system comprises a raw water tank, a water feeding pump, a filter, a cation exchange resin bed, a water producing tank, a product water delivery pump, an acid liquid tank, an acid liquid delivery pump, a pure water tank, a pure water delivery pump, a regenerated liquid collecting tank, a regenerated liquid delivery pump, a waste liquid tank, and a wastewater delivery pump. Special iron ion adsorption resin is arranged in the cation exchange resin bed. The cold rolling and acid pickling resourceful treatment process system is stable in treatment effect, and can effectively remove iron ions in acid pickling wastewater, so that the acid pickling wastewater can be subjected to resource utilization; automatic operation degree of equipment is high; and the system is easy and convenient to operate and run.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a resource treatment process system for cold-rolling pickling wastewater in the iron and steel industry. Background technique [0002] Faced with the shortage of resources and increasingly prominent environmental problems in our country, the iron and steel industry will innovate the development model and improve the quality of development in accordance with the scientific development concept and the principle of circular economy. Consumption, Pollution Reduction, and Efficiency Increase" as the main target, through the implementation of clean production and technological progress, the efficient and cyclic use of resources will be achieved, and the sustainable development of the iron and steel industry will be promoted. [0003] Pickling is to make the metal surface clean. Before metal processing, acid (such as sulfuric acid, hydrochloric acid, hydrofluoric aci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F103/16
Inventor 殷玫婕吴昊黄慧张鸿飞张宜莓陈砚秋宋俊宋艳丽
Owner BAOSHAN IRON & STEEL CO LTD
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