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Water treatment system for large-specification bar production

A technology for production water and treatment systems, which is applied in water/sewage treatment, natural water treatment, water treatment parameter control, etc. It can solve the problems of impact and impact force of solid impurity sedimentation tanks that are prone to scum and high content of suspended solids in water. Achieve the effect of reducing the content of solid impurities, reducing the proportion of scum, and increasing the proportion of removal

Pending Publication Date: 2022-03-04
云南玉溪玉昆钢铁集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a large-scale rod production water treatment system, which is used to solve the problem that when the solid impurities contained in the existing wastewater enter the sedimentation tank from the swirling flow tank, the impact force is too large, and the solid impurities are likely to float up with the air bubbles under the action of the medicament. Scum is easy to be produced in the sedimentation tank; the content of suspended solids in the water entering the sedimentation tank is too high, which affects the technical problem of the quality of the obtained product when it is used in the process of phosphorus removal.

Method used

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  • Water treatment system for large-specification bar production
  • Water treatment system for large-specification bar production
  • Water treatment system for large-specification bar production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Pump the cooling water used by various equipment in bar production and the high-pressure water used for high-pressure dephosphorization into the swirl pool, turn on the first stirring component 113 at a speed of 40 rpm, and after stirring for 2 minutes, turn on the first dosing group Pipe 117, according to the mass ratio of 1:21 into the flocculant and coagulant;

[0089] After cyclone separation, all kinds of suspended solids contained in it are separated from water, mainly to separate iron oxide scale or residue,

[0090] The swirling flow tank includes: a liquid inlet tank 10, a settling tank 114, a mud collecting tank 115, a plurality of baffles 112, and a mud discharge pipe; The settling tube 114 and the mud collecting tube 115 are connected, and the mud collecting tube 115 is arranged on the bottom surface of the settling tube 114; a plurality of baffles 112 are arranged on the inner side wall of the settling tube 114 along the circumferential direction, and are e...

Embodiment 2

[0105] The difference from Example 1 is: the flocculant and coagulant are passed into the swirl pool at a mass ratio of 1:15; the flocculant and coagulant are passed into the tonic pool 12 at a mass ratio of 1:15, The triiron powder is added by 0.5 times of the sum of the flocculant and the coagulant quality added in the tonic pool 12. Mix ferric iron tetroxide powder with engine oil heated to a completely liquid state at a mass ratio of 1:0.3, stir evenly, and cool for later use. Each grid plate 147 is set at 30° to the horizontal plane.

Embodiment 3

[0107] The difference with Example 1 is that: in the swirl pool, the flocculant and coagulant are passed in at a mass ratio of 1:17; The three iron powders are added by 0.4 times of the sum of the flocculant and coagulant quality added in the tonic pool 12. Ferric iron tetroxide powder and engine oil heated to a completely liquid state are mixed at a mass ratio of 1:0.25, stirred evenly, and cooled for later use. Each grid plate 147 is set at 25° to the horizontal plane.

[0108] The water quality test results after each stage of treatment in Example 3 are shown in Table 1.

[0109] Table 1

[0110] project flooded Swirl pool water Air flotation pool water Settling overflow pool effluent Suspended matter mg / L 410 110 60 0.5 Oil contentmg / L 15 10 1 0.6 Turbidity (NTU) 55 35 7 3

[0111] It can be seen from Table 1 that the system provided by this application can effectively reduce the suspended matter impurities, oil content, ...

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PUM

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Abstract

The invention discloses a water treatment system for large-size bar production. The water treatment system comprises a rotational flow tank, a reagent supplementing tank, an air floatation tank and a sedimentation overflow tank, water for large-specification bar production is collected and then pumped into the rotational flow pool in the tangential direction; a first dosing group pipe is inserted into the side wall, far away from the liquid inlet, of the rotational flow tank; a liquid outlet pipe is arranged at the center of the rotational flow pool close to the first stirring assembly, and after solid suspended impurities are separated through rotational flow centrifugation, the central area of the rotational flow pool is communicated with the medicine supplementing pool through the liquid outlet pipe. A coagulant and flocculant filling pipe is arranged on the side wall, far away from the liquid inlet end, of the rotational flow pool, and a liquid outlet pipe is arranged at the center axis of the rotational flow pool, so that impurities in wastewater entering the rotational flow pool are rotated to the inner side wall under centrifugal force to be fully mixed with the chemicals, the emulsified liquid drop structure of waste is destroyed, the proportion of solids formed by impurity flocculation is increased, and the wastewater treatment efficiency is improved. And the removal ratio of solid impurities in the rotational flow stage is improved.

Description

technical field [0001] The application relates to the technical field, in particular to a water treatment system for large-scale bar production. Background technique [0002] In the bar production process, high-pressure water dephosphorization is often used. At this time, high-pressure water is required to flush the bar to make all kinds of impurities contained in it float out, which is convenient for separation and improvement of bar material. At the same time, the main motor, hydraulic station, air compressor station, etc. all need to use cooling water, and the wastewater generated is mainly suspended solid impurities and oil droplets. The treated waste water can be recycled into the stamping link for the production of plates. [0003] After the existing wastewater treatment process, the obtained circulating water often contains a small amount of suspended oil droplets and encapsulated solid waste, which is difficult to effectively remove, and after the wastewater enters ...

Claims

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Application Information

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IPC IPC(8): C02F9/12C02F103/34
CPCC02F9/00C02F1/38C02F1/008C02F1/24C02F1/5281C02F1/54C02F2103/34C02F2101/203C02F1/488C02F2209/11C02F1/001
Inventor 林宇范世雄计剑平陈丕锦
Owner 云南玉溪玉昆钢铁集团有限公司