Oil-containing and slag-containing wastewater treatment system

A wastewater treatment system and oil pollution technology, applied in the field of water treatment, can solve the problems of increased equipment complexity, construction cost and operation cost, poor effect of fine-grained iron oxide scale, and poor water quality.

Active Publication Date: 2020-11-03
朱栋梁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The treatment of hot rolling wastewater in my country mainly adopts the treatment method of primary iron sheet pit and secondary iron sheet pit, but the water quality is poor. For treatment, the effect of fine iron oxide scale in wastewater is not good, so after the iron scale pit treatment, it still needs to be filtered, which virtually increases the complexity of equipment, construction costs and operating costs

Method used

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  • Oil-containing and slag-containing wastewater treatment system
  • Oil-containing and slag-containing wastewater treatment system
  • Oil-containing and slag-containing wastewater treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Using the oily and slag-containing wastewater treatment system of the present application, the wastewater enters the settling chamber 2 through the water inlet pipe 1, and during the rising process of the wastewater in the settling chamber, the bulk particulate matter settles to the bottom of the cone and is regularly discharged through the slag discharge port;

[0035] The wastewater after the large particles have settled enters the mixing chamber 3. Under the action of the aeration and stirring device in the mixing chamber, the wastewater enters the separation chamber 4, and the separated oil is discharged through the oil discharge port 9. In order to prevent the particles from being polluted by oil, the mixing chamber is opened 3. Ultrasonic devices installed at 4 places in the separation chamber;

[0036] The waste water in the separation chamber 4 flows down into the sinking chamber 5, and a sieve plate 51 is set in the sinking chamber to remove medium and small par...

Embodiment 2

[0039] The device of embodiment 1 is improved:

[0040] The sieve plate is an inverted cone structure, with the large mouth facing upwards and the small opening facing downwards. Both the large mouth and the small mouth are open. The electromagnet sieve plate 52 is intermittently energized. An electromagnet rod 53 is inserted at the stage structure, and the particles intercepted at the electromagnet sieve plate are attracted on the electromagnet rod 53, and then the electromagnet rod 53 is taken out.

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Abstract

The invention discloses an oil-containing and slag-containing wastewater treatment system, which is characterized in that wastewater enters a settling cavity through a water inlet pipe, and in the rising process of the wastewater in the settling cavity, large granular substances settle to a conical bottom and are periodically discharged through a slag discharge port; the wastewater is subjected tooil-slag separation under the matching action of gravity and magnetic force through the multi-stage chambers, and meanwhile separation of particles with different properties in the wastewater is achieved.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a treatment system for oily and slag-containing wastewater. Background technique [0002] Hot rolling waste water comes from the cooling and flushing water of rolling mills, rolls and roller tables, the cooling water of iron sheets, billets and slabs, and the dust removal waste water of flame cleaning machines. The scale contained in waste water is hundreds to thousands of milligrams per liter. The particle size ranges from a few centimeters to several microns, the oil content of the wastewater is 20-50mg / L, and the wastewater temperature is 40-60 degrees Celsius. In order to improve the water quality of hot-rolling wastewater treatment, multi-stage purification and cooling are usually adopted. The complete hot-rolling wastewater treatment system also includes waste oil recovery and the concentration and separation of iron scale separated from the secondary iron scale s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12C02F1/40C02F103/16
CPCC02F9/00C02F2001/007C02F1/40C02F1/46176C02F2001/46133C02F1/484C02F7/00C02F2103/16C02F1/36
Inventor 苏华汤亚勇季丹萍
Owner 朱栋梁
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