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A kind of alkaline separating agent and its application in sewage sludge treatment

A technology of separating agent and sludge, which is applied in sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of unreachable industrial discharge, high oil content in soil, and difficult harmless treatment, etc. problem, to achieve the effect of short processing cycle, high separation efficiency and simple steps

Active Publication Date: 2021-08-27
陕西欧菲德环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the separation agent can be used to reduce the amount of oil sludge and recover crude oil, but the existing separation agent mainly uses conventional chemical surfactants to clean and separate crude oil, which is not completely treated, and the treatment period is long. The soil has a high oil content, which cannot meet the requirements of industrial discharge, and it is difficult to achieve harmless treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 0.4 g of 1-butyl-3-methylimidazolium tetrafluoroborate, 0.12 g of biologically active substances (including 0.04 g of amino acid surfactants, 0.08 g of oil soap) and 2.344 g of excipients (of which, sodium metasilicate 2 g, potassium hydroxide 0.2 g, sodium lauryl sulfate 0.08 g, cetyltrimethylammonium bromide 0.004 g, potassium chloride 0.02 g, fatty alcohol polyoxyethylene ether 0.02 g, fatty alcohol ether sulfuric acid Sodium 0.02 g) was mixed, dissolved in 50 g of water, stirred evenly, and adjusted to pH 11 to prepare an alkaline separating agent solution; the obtained alkaline separating agent solution was heated to 50°C, and then 40 g of sludge was added, and stirred slowly After 20 min, a three-phase suspension was obtained; the stirring was stopped, and the obtained three-phase suspension was allowed to stand for 10 min, and layered and enriched to obtain a three-phase layered system of upper oil phase, middle water phase and bottom silt solid phase; the upper l...

Embodiment 2

[0023] Mix 0.2 g of 1-butyl-3-methylimidazolium tetrafluoroborate, 0.12 g of bioactive substances (including 0.04 g of amino acid surfactant, 0.08 g of oil soap) and 2.344 g of excipients (of which, sodium metasilicate 2 g, potassium hydroxide 0.2 g, sodium lauryl sulfate 0.08 g, cetyltrimethylammonium bromide 0.004 g, potassium chloride 0.02 g, fatty alcohol polyoxyethylene ether 0.02 g, fatty alcohol ether sulfuric acid Sodium 0.02 g) was mixed, dissolved in 50 g of water, stirred evenly, and adjusted to pH 12 to prepare an alkaline separating agent solution; the obtained alkaline separating agent solution was heated to 55°C, and then 40 g of sludge was put into it, and stirred slowly After 20 min, a three-phase suspension was obtained; the stirring was stopped, and the obtained three-phase suspension was allowed to stand for 10 min, and layered and enriched to obtain a three-phase layered system of upper oil phase, middle water phase and bottom silt solid phase; the upper la...

Embodiment 3

[0025] 0.2 g of 1-butyl-3-methylimidazolium tetrafluoroborate, 0.12 g of bioactive substances (among them, 0.04 g of amino acid surfactants, 0.08 g of oil soaps) and 6.344 g of excipients (among them, sodium metasilicate 6 g, potassium hydroxide 0.2 g, sodium lauryl sulfate 0.08 g, cetyltrimethylammonium bromide 0.004 g, potassium chloride 0.02 g, fatty alcohol polyoxyethylene ether 0.02 g, fatty alcohol ether sulfuric acid Sodium 0.02 g) was mixed, dissolved in 50 g of water, stirred evenly, and adjusted to pH 12 to prepare an alkaline separating agent solution; the obtained alkaline separating agent solution was heated to 55°C, and then 40 g of sludge was put into it, and stirred slowly After 20 min, a three-phase suspension was obtained; the stirring was stopped, and the obtained three-phase suspension was allowed to stand for 10 min, and layered and enriched to obtain a three-phase layered system of upper oil phase, middle water phase and bottom silt solid phase; the upper ...

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PUM

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Abstract

The invention discloses an alkaline separating agent and its application in sludge treatment. The alkaline separating agent is mainly a mixture composed of ionic liquids, bio-based active substances and auxiliary materials. Using the alkaline separating agent to carry out three-phase separation treatment on the sludge, the crude oil can be quickly separated and recovered from the sludge, and the oil content of the sludge after separation is reduced to 0.32%, which can meet the requirement of direct discharge. The separating agent provided by the present invention has excellent three-phase separation performance. The steps for oil sludge separation treatment are simple, the operating conditions are mild, and the treatment cycle is about half an hour, which is very fast. It can be applied in large-scale industrialization and has broad potential in the fields of energy and environmental protection. Application prospect.

Description

technical field [0001] The invention belongs to the technical field of petroleum pollution and environmental protection, and in particular relates to an alkaline separating agent and its application in sludge treatment. Background technique [0002] Sludge is an important hazardous pollutant produced in the process of crude oil production and refining, which has been included in the national list of hazardous waste. If sludge enters the environment, it will cause serious harm to soil, air, water and human health, and must be treated. The sewage sludge produced in our country has reached millions of tons every year. Its properties are changeable, its volume is huge, and its treatment is difficult. Different treatment methods such as physical method, chemical incineration method and biological method have been proposed at home and abroad. However, there are still problems such as high processing cost, incomplete processing, high oil content, and difficulties in crude oil rec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00
CPCC02F11/00
Inventor 张玮卜涛贠军贤梁庆陈冰冰张颂红张学峰严琴朱杰贾红斌
Owner 陕西欧菲德环保科技有限公司