Method for maintaining a chemical oil remover

Abstract

The present application belongs to the field of wastewater treatment equipment, and particularly relates to a maintenance method of a chemical oil remover. The method comprises the following steps: preparing a coagulant and a flocculant; opening a water inlet valve, and feeding water into a reaction chamber of the chemical oil remover while adding the coagulant and the flocculant; when the volume of the reaction chamber is occupied by more than one third of liquid, adding an active ingredient reagent, and stirring to complete the maintenance of the chemical oil remover. The method provided by the present application can quickly restore the normal production and operation of the chemical oil remover, reduce the time required for recovery and operation, effectively reduce the operation during the recovery and operation of the chemical oil remover, reduce the risks during the recovery and operation of the chemical oil remover, improve the operation rate of the chemical oil remover, and effectively regulate the operation condition of the chemical oil remover through the transfer of the active ingredient reagent, so that the chemical oil remover can operate under the best condition.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of wastewater treatment equipment, and particularly relates to a maintenance method of a chemical oil remover. BACKGROUND

[0002] At present, the method for recovering normal production operation after the chemical oil remover is overhauled or cleaned is to recover the normal production operation through small flow water feeding, adding polyaluminum chloride and polyacrylamide, and gradually adjusting the water feeding amount and the medicament feeding amount so that the alum flower concentration reaches the concentration required for normal operation.

[0003] The main shortcomings of the existing method are long recovery operation time, generally about one week, and the water treatment amount and water quality during the recovery operation cannot meet the operation requirements, the recovery operation is complicated, more operation adjustment is required, and people without rich experience in chemical oil remover operation are difficult to operate. The main reasons are that the cultivation time of the alum flower active sludge in the mixing chamber and the reaction chamber of the chemical oil remover is long, and the cultivation time is affected by multiple factors such as raw water quality, water temperature, medicament concentration, and water amount, and professional personnel are required to perform fine operation to realize the operation, and if water flow impact occurs during the operation, the alum flower active sludge may be dispersed, and the operation is difficult. SUMMARY

[0004] In order to overcome the deficiencies in the prior art, the purpose of the present application is to provide a maintenance method of a chemical oil remover. The method can solve the problem of long recovery operation time after the chemical oil remover is overhauled or cleaned.

[0005] The maintenance method of the chemical oil remover provided by the present application is a method for quickly recovering the normal treatment capacity of the chemical oil remover after the chemical oil remover is overhauled or cleaned. In the prior art, the chemical oil remover usually needs about one week to reach the design treatment capacity and water quality after being put into operation after being overhauled or cleaned, and the method provided by the present application can recover the normal treatment capacity of the chemical oil remover in about one day by transferring the active sludge in the central reaction chamber of the chemical oil remover.

[0006] The purpose of the present application is achieved at least by one of the following technical solutions.

[0007] The maintenance method of the chemical oil remover provided by the present application comprises the following steps:

[0008] Preparation of coagulant and flocculant;

[0009] Opening the water inlet valve, feeding water into the reaction chamber of the chemical oil remover, and adding the coagulant and the flocculant;

[0010] When the volume of the reaction chamber is occupied by more than one third of the liquid, the active ingredient reagent is added and stirring treatment is performed to complete the maintenance of the chemical oil removing device.

[0011] Further, the coagulant is a polyaluminum chloride solution.

[0012] Further, the mass percentage concentration of the polyaluminum chloride solution is 5%.

[0013] Further, the concentration of the polyaluminum chloride in the reaction chamber is 3-5 PPM.

[0014] Further, the flocculant is a polyacrylamide solution.

[0015] Further, the mass percentage concentration of the polyacrylamide solution is 0.03-0.1%.

[0016] Further, the concentration of the polyacrylamide in the reaction chamber is 0.1-0.5 PPM.

[0017] Further, the time of the stirring treatment is 8-16 hours.

[0018] Further, the active ingredient reagent includes a mixture of alum flowers produced by the reaction of the polyaluminum chloride solution and the water in the continuous casting cyclone pool. The active ingredient reagent includes total iron 0.1-1 mg / L and suspended matter concentration 1000-1500 mg / L.

[0019] Further, the addition amount of the active ingredient reagent is 2-5 m 3 / h.

[0020] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0021] The method provided by the present application can quickly restore the normal production operation of the chemical oil removing device, reduce the time required for restoring the operation, effectively reduce the operation during the restoration of the chemical oil removing device, reduce the risks faced during the restoration of the chemical oil removing device, improve the operation rate of the chemical oil removing device, and simultaneously control the operation conditions of the chemical oil removing device through the transfer of the active ingredient reagent, so that the chemical oil removing device can be operated under the best conditions. DETAILED DESCRIPTION

[0022] The specific implementation of the present application is further described below in conjunction with examples, but the implementation and protection of the present application are not limited thereto. It should be noted that if the following processes are not specifically described in detail, they can be implemented or understood by those skilled in the art with reference to the prior art. If the reagents or instruments used are not marked with the manufacturer, they are considered to be conventional products that can be purchased on the market.

[0023] Example 1

[0024] A maintenance method of a chemical oil remover, comprising the following steps:

[0025] The coagulant is a polyaluminum chloride solution with a mass percentage concentration of 5%, and the flocculant is a polyacrylamide solution with a mass percentage concentration of 0.1%.

[0026] The water inlet valve is opened, water is fed into the reaction chamber of the chemical oil remover, and the coagulant and the flocculant are added; the concentration of the polyaluminum chloride in the reaction chamber is maintained at 3-5 PPM, and the concentration of the polyacrylamide in the reaction chamber is maintained at 0.1-0.5 PPM.

[0027] When the volume of the reaction chamber is more than one-third occupied by the liquid, the active ingredient reagent is added, and stirring treatment is performed to complete the maintenance of the chemical oil remover.

[0028] The active ingredient reagent comprises a mixture of polyaluminum chloride solution and alum flower generated by the reaction of the continuous casting cyclone pool with the incoming water; the total iron concentration in the active ingredient reagent is 0.5 mg / L, and the alum flower suspension concentration is 1200 mg / L; the addition amount of the active ingredient reagent is 3 m 3 / h. The stirring treatment time is 8 hours.

[0029] The method provided by the embodiment of the application can quickly restore the normal production operation of the chemical oil remover, reduce the time required for the restoration operation, effectively reduce the operation in the restoration operation process of the chemical oil remover, reduce the risks faced in the restoration operation process of the chemical oil remover, improve the operation rate of the chemical oil remover, and effectively regulate the operation condition of the chemical oil remover by transferring the active ingredient reagent, so that the chemical oil remover can be operated in the best condition.

[0030] The above embodiment is only a preferred embodiment of the application, which is used for explaining the application, but not for limiting the application. The changes, replacements and modifications made by those skilled in the art without departing from the spirit and essence of the application should all belong to the protection scope of the application.

Claims

1. A method of maintaining a chemical oil remover, characterized by, It comprises the following steps: Preparation of coagulant and flocculant; Opening the water inlet valve, water into the reaction chamber of the chemical oil remover, while adding coagulant and flocculant; When the volume of the reaction chamber is more than one-third occupied by liquid, add the active ingredient reagent, and stir to complete the maintenance of the chemical oil remover; The active ingredient reagent includes a mixture of alumen flowers generated by the reaction of polyaluminum chloride solution with the water in the continuous casting cyclone pool; the active ingredient reagent includes total iron with a concentration of 0.1-1 mg / L and alumen flower suspensions with a concentration of 1000-2000 mg / L; the addition amount of the active ingredient reagent is 2-5 m 3 / h.

2. The method of claim 1, wherein the chemical oil remover is a mixture of 10% to 30% of a solvent and 70% to 90% of water. The coagulant is polyaluminum chloride solution.

3. The method of claim 2, wherein the chemical oil remover is a mixture of 10% to 30% of a solvent and 70% to 90% of water. The mass percentage concentration of the polyaluminum chloride solution is 5%.

4. The method of claim 3, wherein the chemical oil remover is a mixture of 10% to 30% of a solvent and 70% to 90% of water. The concentration of the polyaluminum chloride in the reaction chamber is 3-5 PPM.

5. The method of claim 1, wherein the chemical oil remover is a mixture of 5% to 30% of a solvent and 70% to 95% of water. The flocculant is polyacrylamide solution.

6. The method of claim 5, wherein the chemical oil remover is a mixture of 10% to 30% of a solvent and 70% to 90% of water. The mass percentage concentration of the polyacrylamide solution is 0.03-0.1%.

7. The method of claim 6, wherein the chemical oil remover is a mixture of 10% to 30% of a solvent and 70% to 90% of water. The concentration of the polyacrylamide in the reaction chamber is 0.1-0.5 PPM.

8. The method of claim 1, wherein the chemical oil remover is a mixture of 10% to 30% of a solvent and 70% to 90% of water. The stirring time is 8-16 hours.