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Coking wastewater industry membrane cleaning agent, preparation method and cleaning method

A technology of membrane cleaning agent and coking wastewater, which is applied in the field of membrane cleaning, can solve the problems of chemical cleaning formulas that are not highly targeted, have no cleaning effect, and calcium fluoride pollution, and achieve transportation cost savings, simple and convenient manual operation, and reduce membrane pollution. Effect of operating differential pressure

Inactive Publication Date: 2020-11-27
烟台金正环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing cleaning technology, the chemical cleaning formula is not very specific. Although it is suitable for cleaning some contaminated membrane elements, it has almost no cleaning effect on calcium fluoride pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 provides a membrane cleaning agent for coking wastewater industry, which is used for cleaning nanofiltration membranes, microfiltration membranes, roll reverse osmosis membranes, disc tube reverse osmosis membranes or super reverse osmosis membranes, including independently preserved acidic components and Alkaline components;

[0027] Described acid component is prepared from the raw material of following mass percent table: ammonium sulfate (NH 4 ) 2 SO 4 Dosage 5 parts; sodium tripolyphosphate Na 5 P 3 o 10 The dosage is 2 parts; the dosage of disodium EDTA-2Na is 2 parts, the dosage of sodium dodecylbenzenesulfonate SDBS is 1 part, and the dosage of deionized water is 990 parts; the acidic component is adjusted to be acidic by hydrochloric acid;

[0028] Described alkaline component is prepared from the raw material of following mass percent table: ammonium sulfate (NH 4 ) 2 SO 4 Dosage 5 parts; sodium tripolyphosphate Na 5 P 3 o 10 1 part of ...

Embodiment 2

[0034] Embodiment 2 provides a membrane cleaning agent for coking wastewater industry, which is used for cleaning nanofiltration membranes, microfiltration membranes, roll reverse osmosis membranes, disc tube reverse osmosis membranes or super reverse osmosis membranes, including independently preserved acidic components and Alkaline components;

[0035] Described acid component is prepared from the raw material of following mass percent table: ammonium sulfate (NH 4 ) 2 SO 4 Dosage 50 parts; sodium tripolyphosphate Na 5 P 3 o 10 Consumption of 25 parts; tetrasodium EDTA-4Na consumption of 25 parts, sodium lauryl sulfate SDS consumption of 25 parts, deionized water 875 parts; the acidic component is adjusted to be acidic by hydrochloric acid;

[0036] Described alkaline component is prepared from the raw material of following mass percent table: ammonium sulfate (NH 4 ) 2 SO 4 Dosage 25 parts; sodium tripolyphosphate Na 5 P 3 o 10The dosage is 25 parts; the dosage o...

Embodiment 3

[0042] Embodiment 3 provides a membrane cleaning agent for coking wastewater industry, which is used for cleaning nanofiltration membranes, microfiltration membranes, roll reverse osmosis membranes, disc tube reverse osmosis membranes or super reverse osmosis membranes, including independently preserved acidic components and Alkaline components;

[0043] Described acid component is prepared from the raw material of following mass percent table: ammonium sulfate (NH 4 ) 2 SO 4 Dosage 100 parts; sodium tripolyphosphate Na 5 P 3 o 10 50 parts of consumption; 50 parts of triethanolamine TEOA consumption; 25 parts of sodium dodecylbenzenesulfonate SDBS consumption; 25 parts of sodium dodecyl sulfate SDS consumption, 750 parts of deionized water; acidic;

[0044] Described alkaline component is prepared from the raw material of following mass percent table: ammonium sulfate (NH 4 ) 2 SO 4 Dosage 50 parts; sodium tripolyphosphate Na 5 P 3 o 10 50 parts of consumption; 50 ...

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Abstract

The invention relates to a coking wastewater industry membrane cleaning agent, a preparation method and a cleaning method. The coking wastewater industry membrane cleaning agent comprises an acidic component and an alkaline component which are independently stored; the acidic component comprises 0.5%-10% of sulfate, 0.2%-5% of polyphosphate, 0.2%-5% of a chelating agent, 0.1%-5% of a surfactant and 75%-99% of deionized water; the acidic component is adjusted to be acidic through an acidic PH regulator; the alkaline component comprises 0.5%-5% of sulfate, 0.1%-5% of polyphosphate, 0.1%-5% of achelating agent, 0.1%-3% of a surfactant and 82%-99.2% of deionized water; and the alkaline component is adjusted to be alkaline through an alkaline PH regulator. On-site configuration of the acidic component and on-site configuration of the alkaline component can realize on-line cleaning or off-line cleaning. The cleaning agent can be used for cleaning calcium fluoride polluted membrane treatmentsystems for wastewater discharged in the coking wastewater industry, and can effectively remove precipitates of calcium fluoride and other salts on the surface of the membrane.

Description

technical field [0001] The invention relates to a membrane cleaning agent for the coking wastewater industry, a preparation and a cleaning method, and belongs to the technical field of membrane cleaning. Background technique [0002] Coking wastewater is high-concentration, refractory and toxic industrial wastewater produced in the process of high-temperature carbonization of coal, coal-to-coke, gas purification, refining and recycling of chemical products. Membrane treatment technology has been widely used in the field of sewage treatment, especially for biochemical wastewater produced by coking wastewater treatment. Membrane systems are essential if advanced treatment is to be discharged to meet standards. [0003] Since the function of the membrane is mainly to filter and concentrate pollutants, with the operation of the device, pollutants will continue to accumulate on the concentrated side of the membrane, and the membrane will inevitably be polluted, causing problems s...

Claims

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Application Information

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IPC IPC(8): B01D65/06C02F1/44C02F103/34
CPCB01D65/02C02F1/44B01D2321/162B01D2321/168C02F2303/16C02F2103/34
Inventor 李越彪王永胜徐国玲刘波刘丽丽张卓
Owner 烟台金正环保科技有限公司
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