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Salt resistant biochemical functional type flocculating agent used for oil field waste water and preparation method thereof

A functional technology for oilfield wastewater, applied in the chemical field, can solve the problems of poor salt tolerance and secondary pollution of flocculants, and achieve the effects of easy control of the reaction, mild reaction conditions, and reduced secondary pollution

Active Publication Date: 2012-10-24
AEGIS GASOLINEEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a salt-tolerant and biochemical functional flocculant for oilfield wastewater. The salt-tolerant and biochemical functional flocculant for oilfield wastewater needs to solve the problem of poor salt tolerance of the flocculant in the prior art, Technical problems that are prone to secondary pollution

Method used

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  • Salt resistant biochemical functional type flocculating agent used for oil field waste water and preparation method thereof
  • Salt resistant biochemical functional type flocculating agent used for oil field waste water and preparation method thereof
  • Salt resistant biochemical functional type flocculating agent used for oil field waste water and preparation method thereof

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Embodiment 1

[0020] (1) The formulation of a salt-tolerant biochemical functional flocculant for oilfield wastewater of the present invention is: 1.5g humic acid, 2g initiator solution, and 100g acrylamide.

[0021] (2) The preparation method of a salt-tolerant biochemical functional flocculant for oilfield wastewater of the present invention is as follows:

[0022] (1) Put humic acid into a beaker, dissolve it with a sodium hydroxide solution with a concentration of 0.01mol / L, and obtain a sodium humate solution with a mass percentage concentration of 20% for later use;

[0023] (2) Put 100g of acrylamide into the reactor, add distilled water and stir until completely dissolved, add 2g of initiator solution according to the proportion, stir evenly, and adjust the pH value of the solution to 6;

[0024] (3) Heat in a water bath at 35°C until the solution becomes viscous and cannot be stirred, stop stirring, react at 35°C for 12 hours, take out the obtained product, dry to constant weight, ...

Embodiment 2

[0033] The proportion of a salt-tolerant biochemical functional flocculant for oilfield wastewater provided in Example 2 and the reaction time of the preparation method are shown in Table 2, and the rest are the same as in Example 1.

[0034] The oilfield wastewater samples were taken, and the COD index was measured according to "GB / T 11914-89 Determination of Chemical Oxygen Demand in Water Quality by Dichromate Method". According to the flocculation experimental method introduced in "Water Supply Treatment" and "Water Treatment Engineering Theory and Application", the coagulation-assisted settlement test for simulating water purification production is carried out. Determine the optimal dosage of medicine. After adding the medicament, measure the COD index again and calculate the COD removal amount.

[0035] The molecular weight and COD removal rate are shown in Table 2.

[0036] Table 2 Reaction conditions and results of a salt-tolerant biochemical functional flocculant fo...

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Abstract

The invention belongs to the field of high polymer materials and provides a salt resistant biochemical functional type flocculating agent used for oil field waste water. The structural formula of the flocculating agent is described in the specification. The main component of the salt resistant biochemical functional type flocculating agent used for the oil field waste water is a polyacrylamide / humic acid grafted copolymer. The invention also provides a preparation method of the flocculating agent. The preparation method comprises the following steps: taking humic acid, acrylamide and an initiator as raw materials, wherein the mass ratio of the humic acid to the acrylamide to the initiator is (0.5-5):100:(0.1-10); and hydrolyzing to obtain the grafted copolymer. The flocculating agent has extremely strong salt resistance, and the degree of mineralization resistance of the flocculating agent is 50,000mg / L. The flocculating agent provided by the invention can be used for effectively reducing the COD (Chemical Oxygen Demand) and the SS (Suspended Solid) of highly difficultly treated oil field waste water so as to enable sewage to reach a drainage standard.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to a flocculant, in particular to a salt-tolerant biochemical functional flocculant for oilfield wastewater and a preparation method thereof. Background technique [0002] The production of oilfield wastewater increases with the increase of oilfield comprehensive water content, and part of the oil production wastewater must be released into the environment, so the discharged water must meet the national discharge standards. If some characteristic oilfield wastewater such as heavy oil wastewater and high chlorine-containing wastewater are to be discharged, it will be very difficult to meet the COD value, because the previous treatment process of oil production wastewater only targets SS and petroleum pollutants in the water. In view of the current treatment status of petroleum wastewater, it is necessary to develop a matching chemical for the treatment of petroleum wastewater to meet product...

Claims

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Application Information

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IPC IPC(8): C02F1/56C08J3/24C08F220/56C08F4/04
Inventor 李松棠李慕李文博秦磊张方元单煜巽
Owner AEGIS GASOLINEEUM TECH
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