CN104628109A - Composite coagulant for treating oil field wastewater and preparation method of composite coagulant - Google Patents

Abstract

The invention discloses a composite coagulant for treating oil field wastewater. The composite coagulant is a water solution of aluminum sulfate of which the concentration is 25% to 35%, and consists of the following components in parts by mass: 2000-2200 parts of fresh water and 850-950 parts of the aluminum sulfate. A preparation method of the composite coagulant comprises the following steps: weighing each component according to the parts by mass and separately arranging for later use; adding 40% to 50% of the fresh water by parts by mass into a mixer, and stirring at a rotating speed of 130R/min to 170R/min for 3-5 minutes; adding the aluminum sulfate into the mixer, and stirring at the rotating speed of 130R/min to 170R/min for 18-22 minutes; simultaneously adding the rest parts by mass of the fresh water, stirring for at least 20 minutes and stopping stirring after the medicament is uniformly mixed.

Description

A kind of compound coagulant for disposing polluted water in oil and preparation technology thereof

Technical field

The invention belongs to coagulating agent technical field, particularly a kind of compound coagulant for disposing polluted water in oil and preparation technology thereof.

Background technology

Coagulating agent is mainly used in purification and the trade effluent of Drinking Water, the process (as oily(waste)water, printing and dyeing papermaking wastewater, smelting sewage, containing radioactivity speciality, containing toxic heavy metals such as Pb, Cr with containing F sewage etc.) of special water quality.Also there is extensive use the aspects such as this external precision casting, oil drilling, process hides, metallurgical papermaking.

Coagulating agent is exactly the material that colloidal particle in water mutually can be bondd and flocks together in water treatment procedure, and the process of coagulation is exactly add medicament in the process of water treatment, makes impurity produce the process of cohesion, flocculation.Wherein, in oilfield sewage, there is iron ion, sulfonium ion brings great impact to field produces, be mainly manifested in the impact on sewage quality, injection pipe network burn into formation contaminant and blocking etc., and be difficult to remove, not only cause the financial loss of certain forms, also destroy environment.

Summary of the invention

In order to solve above-mentioned technological deficiency, the object of the present invention is to provide a kind of one package stabilizer and preparation method thereof, effectively can remove the harmful ion in water.

To achieve these goals, the technical solution used in the present invention is: a kind of compound coagulant for disposing polluted water in oil, the aqueous solution of this compound coagulant to be concentration be Tai-Ace S 150 of 25% ~ 35%; The component that this compound coagulant described is divided by following quality forms: clear water 2000 ~ 2200, Tai-Ace S 150 850 ~ 950.

Preferably, described Tai-Ace S 150 raw material is Ph value: 2.0-3.0, and concentration is 10% aqueous solution.

The invention provides a kind of preparation method of the compound coagulant for disposing polluted water in oil, comprise following steps:

Step one, divides by quality and takes each component, separated for subsequent use;

Step 2, add that clear water quality divides 40% ~ 50% in mixing tank, and start stirring, mixing speed is 130 ~ 170R/min, stirs 3 ~ 5min;

Step 3, adds Tai-Ace S 150 in mixing tank, starts stirring, and mixing speed is 130 ~ 170R/min, stirs 18 ~ 22min; Add the clear water that residual mass divides simultaneously, start and stir at least more than 20min, stir until medicament mixes rear stopping.

Beneficial effect of the present invention is:

1, use iron ion in this conjunction coagulating agent sewage multiple to control to below 0.5mg/l, sulfonium ion controls at below 1.5mg/l, and erosion rate controls, within the industry standard of 0.076mm/a, to improve the stability of water body;

2, this technique adds water production, not heat production, without byproduct, nontoxicity, nonflammable explosive.

Embodiment

In order to make technique means of the present invention, creation characteristic and reach object be easy to understand understand, set forth the present invention further below in conjunction with specific embodiment.

Embodiment 1:

For a compound coagulant for disposing polluted water in oil, the aqueous solution of this compound coagulant to be concentration be Tai-Ace S 150 of 25%; The component that this compound coagulant described is divided by following quality forms: clear water 2000 ~ 2200, Tai-Ace S 150 850.

Preferably, described Tai-Ace S 150 raw material is Ph value: 2.0-3.0, and concentration is 10% aqueous solution.。

The invention provides a kind of preparation method of the compound coagulant for disposing polluted water in oil, comprise following steps:

Step one, divides by quality and takes each component, separated for subsequent use;

Step 2, add that clear water quality divides 40% in mixing tank, and start stirring, mixing speed is 130 ~ 170R/min, stirs 3 ~ 5min;

Step 3, adds Tai-Ace S 150 in mixing tank, starts stirring, and mixing speed is 130 ~ 170R/min, stirs 18 ~ 22min; Add the clear water that residual mass divides simultaneously, start and stir at least more than 20min, stir until medicament mixes rear stopping.

Embodiment 2:

For a compound coagulant for disposing polluted water in oil, the aqueous solution of this compound coagulant to be concentration be Tai-Ace S 150 of 30%; The component that this compound coagulant described is divided by following quality forms: clear water 2100, Tai-Ace S 150 900.

Preferably, described Tai-Ace S 150 raw material is Ph value: 2.0-3.0, and concentration is 10% aqueous solution.。

The invention provides a kind of preparation method of the compound coagulant for disposing polluted water in oil, comprise following steps:

Step one, divides by quality and takes each component, separated for subsequent use;

Step 2, add that clear water quality divides 45% in mixing tank, and start stirring, mixing speed is 130 ~ 170R/min, stirs 3 ~ 5min;

Step 3, adds Tai-Ace S 150 in mixing tank, starts stirring, and mixing speed is 130 ~ 170R/min, stirs 18 ~ 22min; Add the clear water that residual mass divides simultaneously, start and stir at least more than 20min, stir until medicament mixes rear stopping.

Embodiment 3:

For a compound coagulant for disposing polluted water in oil, the aqueous solution of this compound coagulant to be concentration be Tai-Ace S 150 of 35%; The component that this compound coagulant described is divided by following quality forms: clear water, Tai-Ace S 150 950.

Preferably, described Tai-Ace S 150 raw material is Ph value: 2.0-3.0, and concentration is 10% aqueous solution.。

The invention provides a kind of preparation method of the compound coagulant for disposing polluted water in oil, comprise following steps:

Step one, divides by quality and takes each component, separated for subsequent use;

Step 2, add that clear water quality divides 50% in mixing tank, and start stirring, mixing speed is 130 ~ 170R/min, stirs 3 ~ 5min;

Step 3, adds Tai-Ace S 150 in mixing tank, starts stirring, and mixing speed is 130 ~ 170R/min, stirs 18 ~ 22min; Add the clear water that residual mass divides simultaneously, start and stir at least more than 20min, stir until medicament mixes rear stopping.

More than show and describe ultimate principle of the present invention, principal character and advantage; the technician of the industry should understand; the present invention is not restricted to the described embodiments; description in above-described embodiment and specification sheets is only and the present invention and principle thereof is described; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and the improvement of these changes all falls in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (4)

1. for a compound coagulant for disposing polluted water in oil, it is characterized in that, the aqueous solution of this compound coagulant to be concentration be Tai-Ace S 150 of 25% ~ 35%.

2. a kind of compound coagulant for disposing polluted water in oil according to claim 1, is characterized in that, the component that this compound coagulant described is divided by following quality forms: clear water 2000 ~ 2200, Tai-Ace S 150 850 ~ 950.

3. a kind of compound coagulant for disposing polluted water in oil according to claim 1, is characterized in that, described Tai-Ace S 150 raw material is Ph value: 2.0-3.0, and concentration is 10% aqueous solution.

4. for a preparation method for the compound coagulant of disposing polluted water in oil, it is characterized in that, comprise following steps:

Step one, divides by quality and takes each component, separated for subsequent use;

Step 2, add that clear water quality divides 40% ~ 50% in mixing tank, and start stirring, mixing speed is 130 ~ 170R/min, stirs 3 ~ 5min;

Step 3, adds Tai-Ace S 150 in mixing tank, starts stirring, and mixing speed is 130 ~ 170R/min, stirs 18 ~ 22min; Add the clear water that residual mass divides simultaneously, start and stir at least more than 20min, stir until medicament mixes rear stopping.