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Ultrahigh-concentration waste liquid filtering treatment equipment and filtering method thereof

A treatment equipment and high-concentration technology, which is applied in mining wastewater treatment, sludge treatment, chemical instruments and methods, etc., can solve the problems of difficult degradation, environmental pollution, and high cost of manual treatment, and achieve high safety performance and low operating cost , High filtering effect

Pending Publication Date: 2022-04-08
INNER MONGOLIA HENGSHENG ENVIRONMENTAL PROTECTION TECH ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When treating high-concentration waste liquid, there are the following disadvantages: 1. The pollutant composition in high-concentration waste liquid is very complex and stable, and it is extremely difficult to degrade, and the cost of manual treatment is high. If it is allowed to discharge, it will cause environmental pollution ;2. Due to the excessive concentration of high-concentration waste liquid, the traditional pressure filtration method can only perform simple filtration operations on it, which cannot meet the treatment requirements, and still contains a large amount of polluting components after treatment

Method used

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  • Ultrahigh-concentration waste liquid filtering treatment equipment and filtering method thereof
  • Ultrahigh-concentration waste liquid filtering treatment equipment and filtering method thereof
  • Ultrahigh-concentration waste liquid filtering treatment equipment and filtering method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] Embodiment 1: This embodiment provides a kind of ultra-high concentration waste liquid filtration treatment equipment, see Figure 1-4 Specifically, it includes a high-concentration waste liquid pool 1 and a sludge storage pool 4. The high-concentration waste liquid pool 1 is connected to a mixed catalytic unit, the mixed catalytic unit is connected to a flocculation unit, the flocculation unit is connected to an ion exchange unit, and the ion exchange unit is connected to There is a sedimentation unit, the sedimentation unit is connected to an air flotation unit, the air flotation unit is connected to a precision filter unit, and the precision filter unit is connected to a hard removal unit;

[0037] Among them, the mixed catalytic unit, flocculation unit, ion exchange unit, air flotation unit, precision filtration unit, and hard removal unit are all connected to the same sludge storage tank 4, and the sludge storage tank 4 is connected to a plate and frame filter press...

Embodiment 2

[0042] Embodiment 2: In Embodiment 1, there is also the problem that the plate-and-frame filter press unit has a poor press filtration effect. Therefore, on the basis of Embodiment 1, this embodiment also includes:

[0043] In the present invention, see image 3 with Figure 4 , the plate-and-frame filter press unit comprises a plate-and-frame filter press box 5, and the plate-frame filter press box 5 is evenly arranged with a plurality of platen frames 51 equidistantly arranged, and each platen frame 51 is provided with a platen 52, a platen frame 51 and a platen frame 51. 52 can adopt a rectangular shape or a circular shape, and a folded filter press membrane 56 is arranged between two adjacent platen frames 51, and a number of filter press membranes are evenly distributed on the front, back, side and bottom of each filter press membrane 56. hole, the top of which is an opening, the four corners of the pressure plate 52 are provided with sealing sliding holes, and four hori...

Embodiment 3

[0047] Embodiment three: In this embodiment, the present invention also proposes the reaction principle of the ion exchange unit:

[0048] In the present invention, the ion exchange unit reaction principle is as follows, sodium hydroxide can form insoluble magnesium hydroxide precipitation with magnesium ion in water, thereby reduce the concentration of magnesium ion in water, sodium carbonate and calcium ion form insoluble calcium carbonate precipitation, thereby Reduce the concentration of calcium ions in water. The response is as follows:

[0049] 2NaOH+CO 2 →Na 2 CO 3 +H 2 o

[0050] Ca(HCO 3 ) 2 +2NaOH→CaCO 3 ↓+Na 2 CO 3 +2H 2 o

[0051] Mg(HCO 3 ) 2 +2NaOH→MgCO 3 +Na 2 CO 3 +2H 2 o

[0052] MgCO 3 +2NaOH→Mg(OH) 2 ↓+Na 2 CO 3

[0053] CaSO 4 +Na 2 CO 3 →CaCO 3 ↓+Na 2 SO 4

[0054] CaCl 2 +Na 2 CO 3 →CaCO 3 ↓+2NaCl

[0055] MgSO 4 +Na 2 CO 3 →MgCO 3 +Na 2 SO 4

[0056] MgCl 2 +Na 2 CO 3 →MgCO 3 +2NaCl

[0057] Ca(HCO 3 ) 2 ...

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Abstract

The invention discloses ultrahigh-concentration waste liquid filtering treatment equipment which comprises a high-concentration waste liquid pool and a sludge storage pool, the high-concentration waste liquid pool is connected with a mixed catalysis unit, the mixed catalysis unit is connected with a flocculation unit, the flocculation unit is connected with an ion exchange unit, the ion exchange unit is connected with a precipitation unit, and the precipitation unit is connected with an air flotation unit. The air floatation unit is connected with a precision filtering unit, and the precision filtering unit is connected with a hardness removal unit; the mixed catalysis unit, the flocculation unit, the ion exchange unit, the air floatation unit, the precision filtration unit and the hardness removal unit are all connected with the same sludge storage pool, the sludge storage pool is connected with a plate-and-frame pressure filtration unit, and the plate-and-frame pressure filtration unit is connected with an effluent buffer tank. The invention further discloses a filtering method of the ultrahigh-concentration waste liquid filtering treatment equipment. The high-concentration waste liquid treatment device can efficiently treat high-concentration waste liquid, is high in filtering precision, high in safety performance and low in operation cost, and can be suitable for an existing oilfield development technology.

Description

technical field [0001] The invention relates to the technical field of high-concentration wastewater treatment, in particular to an ultra-high-concentration waste liquid filtration treatment device and a filtration method thereof. Background technique [0002] With the continuous increase of exploration and development efforts, drilling, gas testing, and gas production inevitably produce a large amount of waste liquid, drilling cuttings and other wastes. The high-concentration waste liquid produced by fracturing operations mainly comes from two aspects: one is the large amount of well-washing wastewater generated by active water washing operations before and after construction, and the other is the broken gel and residual raw materials discharged from the wellbore after the operation is completed. Glue and waste water produced during fracturing, these two parts constitute the main body of high-concentration waste liquid. Due to the different types of operations and formation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F11/122C02F103/10
Inventor 李广平王哲王瑾刘世军刘开拓吴岗
Owner INNER MONGOLIA HENGSHENG ENVIRONMENTAL PROTECTION TECH ENG CO LTD