CN106630271B

CN106630271B - Effectively improve effluent treatment plant that membrane pollutes

Info

Publication number: CN106630271B
Application number: CN201611111259.9A
Authority: CN
Inventors: 胡大苇
Original assignee: Fushengyuan Environmental Protection Engineering Co ltd
Current assignee: Fushengyuan Environmental Protection Engineering Co ltd
Priority date: 2016-12-06
Filing date: 2016-12-06
Publication date: 2020-08-11
Anticipated expiration: 2036-12-06
Also published as: CN106630271A

Abstract

The invention discloses a wastewater treatment device for effectively improving membrane pollution, which consists of the following components: the device comprises a primary filtering unit, a secondary filtering unit, a regulating unit and a membrane reaction unit; the built-in filler of one-level filter unit accomplishes primary filter, the filler is multistage combination filler, second grade filter unit is magnetism nanometer photocatalysis material, accomplishes the second grade and filters, adjusting unit embeds pH regulator and pressure regulator, the membrane reaction unit includes shell, membrane module, micro-oscillator, explodes gas device, explodes gas controlling means, the tubular membrane module of membrane module for additional electric field, and the center is provided with anode, and the outer lane is rotatable cathode electrode, and the membrane is hollow fiber internal pressure membrane, distributes between negative and positive two-stage, micro-oscillator sets up on outer lane cathode electrode, explode the gas device and set up in the membrane module lower part, explode the gas device and control through exploding gas controlling means.

Description

Effectively improve effluent treatment plant that membrane pollutes

Technical Field

The invention belongs to the field of environmental protection, and particularly relates to a wastewater treatment device capable of effectively improving membrane pollution.

Background

The waste water is a general term of water and runoff rainwater drained in the process of activities of residents. The method comprises the steps of domestic sewage, industrial wastewater and other useless water such as primary rain water flowing into a drainage pipe canal, and generally refers to water which can not be recycled after being treated by a certain technology or can not reach a certain standard after being purified by primary pollution. As a land and a large population country in China, the shortage of water resources is undoubted, the environmental problem caused by the development of economy is also serious, the unqualified discharge of waste water causes the harm of harmful substances to soil, air, underground water and the like to be more and more serious, for China with the shortage of water resources, the water resources are reasonably utilized without causing excessive waste, the development of national economy cannot be met, how to reasonably treat the waste water in the life and production is to reduce the harmful substances to the minimum, the effective recycling is realized, and the harm of the waste water to the environment and human is reduced.

The general treatment method of waste water includes physical, chemical, biological and other special treatment methods, all have certain effect but can not avoid the problem brought by technical limitation, the research of new treatment method is very important for waste water treatment, in recent years, the membrane reactor adopts the combination of high-efficiency membrane separation technology and other technologies to bring new breakthrough for waste water treatment, the removal rate of harmful substances is high, the quality of effluent water is good, but the membrane pollution problem generated therewith is the key for restricting the development, the membrane pollution factors are mainly reflected in the membrane material, the structure of the membrane component and the property of liquid during membrane reaction, the control on the pollution comprises the physical and chemical cleaning of the membrane, the optimal design of the membrane component, the auxiliary function of additional equipment and the like, the electric field enhanced filtration technology effectively improves the membrane pollution, how to reasonably apply the electric field enhanced technology, effectively reduces the membrane pollution, the invention aims to improve the wastewater treatment efficiency of the membrane reactor.

Disclosure of Invention

The invention aims to provide a wastewater treatment device capable of effectively improving membrane pollution.

In order to achieve the above object, a wastewater treatment apparatus effective in improving membrane fouling, comprising: the device comprises a primary filtering unit, a secondary filtering unit, a regulating unit and a membrane reaction unit; the built-in filler of one-level filter unit accomplishes primary filtration, the filler is multistage combined filler, second grade filter unit is magnetism nanometer photocatalysis material, accomplishes second grade filtration, adjusting unit embeds pH regulator and pressure regulator, membrane reaction unit includes shell, membrane module, micro-oscillator, explodes gas device, explodes gas controlling means, the membrane module is the tubular membrane module of additional electric field, and the center is provided with anode, and the outer lane is rotatable cathode electrode, and the membrane is hollow fiber internal pressure membrane, distributes between negative and positive two-stage, micro-oscillator sets up on outer lane cathode electrode, explode the gas device and set up in the membrane module lower part, explode the gas device and pass through the control of exploding gas controlling means, macromolecular material and heavy metal are got rid of through one-level filter unit respectively to waste water, get rid of the organic pollutant in the waste water through second grade filter unit, the pH value and the water pressure are regulated by the regulating unit, the concentrated solution is filtered by the membrane reaction unit, the concentrated solution flows back to the first-stage filtering unit for circular filtration, and the filtered solution is discharged from the water outlet after reaching the standard.

Furthermore, the membrane module is a modified hollow fiber tubular membrane module, the membrane in the membrane module adopts a super-thin membrane sheet, the membrane sheet rotates around the middle anode electrode to form a dynamic membrane bag, the membrane utilization rate is high, a support material is not needed, the membrane flux is improved, and the membrane pollution is reduced.

Furthermore, the multistage combined filler is formed by sequentially distributing and combining activated carbon fibers, modified slag and natural zeolite from top to bottom, and can effectively adsorb various heavy metals and chemical residual harmful substances in the wastewater.

Furthermore, the modified slag is prepared by refining the waste slag, mechanically crushing the waste slag by using an ultrafine crusher, putting the crushed waste slag into a modifying machine, setting the temperature at 130-150 ℃, adding 1.3 per mill of a K II-560 silane modifier, 0.9 per mill of an auxiliary agent stearic acid, and modifying for 20-25min, so as to obtain the modified slag, and greatly improve the adsorption effect.

Further, the magnetic nano photocatalytic material is prepared by the steps of carrying out interaction mixing on magnetic nano Fe3O4 and a chitosan alcohol solution under the action of ultrasonic waves according to the mixing mass ratio of 2.5:1.3, carrying out ultrasonic treatment for 30min, continuously stirring, eluting with absolute ethyl alcohol at room temperature, and then carrying out drying treatment, so as to obtain the magnetic nano photocatalytic material, wherein organic matters in wastewater can be degraded under the action of visible light.

Further, the pH regulator regulates the pH value of the wastewater to 3.5-6.

Further, the gas explosion device is a piston flow gas explosion device adopting a sine wave change rule.

Furthermore, the membrane module is arranged at the lower part of the membrane reaction unit to form a height difference with the liquid level, so that filtered effluent can automatically flow out through pressure, and the membrane module is more efficient, intelligent and environment-friendly.

Furthermore, the electric field is an intermittent pulse electric field, the electric field is powered on for 5min, the power is cut off for 5min, the pulse voltage is 10-20V, the membrane filtration rate can be continuously changed, and the membrane pollution is improved.

The invention has the advantages that: the invention relates to a wastewater treatment device capable of effectively improving membrane pollution, which is applied to wastewater treatment, heavy metals, organic pollutants, small particles and the like in wastewater can be effectively removed through a multistage filtering device, the problem of membrane pollution in a membrane reaction device can be effectively improved through multistage filtering and pulsed electric field applied by a membrane component, a better road is developed for the development of a membrane reactor, a cathode and an anode can control the attachment condition of pollutants with charges in wastewater on a membrane, a membrane rotates around a middle anode to form a dynamic membrane bag, the membrane flux can be well controlled, the membrane pollution is reduced, and the replacement and cleaning period of the membrane is prolonged; the treated wastewater can be directly discharged without causing environmental pollution.

Drawings

FIG. 1 is a schematic view showing the structure of a membrane reaction wastewater treatment apparatus;

FIG. 2 is a schematic view of the structure of the regulating unit;

FIG. 3 is a schematic structural view of a membrane reaction unit;

wherein, 1-a first-stage filtering unit; 2-a secondary filtration unit; 3-a conditioning unit; 4-a membrane reaction unit; 5-pH regulator; 6-a pressure regulator; 7-a membrane module; 8-micro-vibrator; 9-an air explosion device; 10-hollow fiber internal pressure membrane; 11-an anode electrode; 12-a cathode electrode; 13-a housing; 14-explosion control device.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings 1-3 and examples:

fig. 1 shows a wastewater treatment apparatus for effectively improving membrane fouling according to the present invention, which comprises: the device comprises a primary filtering unit 1, a secondary filtering unit 2, a regulating unit 3 and a membrane reaction unit 4; the built-in filler of one-level filter unit 1 accomplishes primary filtration, the filler is multistage combination filler, second grade filter unit 2 is magnetism nanometer photocatalysis material, accomplishes second grade and filters, adjusting unit 3 embeds pH regulator 5 and pressure regulator 6, membrane reaction unit 4 includes shell 13, membrane module 7, micro-oscillator 8, explodes gas device 9, explodes gas controlling means 14, membrane module 7 is the tubular membrane module of additional electric field, and the center is provided with anode electrode 11, and the outer lane is rotatable cathode electrode 12, and the membrane is hollow fiber internal pressure membrane 10, distributes between negative and positive two-stage, micro-oscillator 8 sets up on outer lane cathode electrode 12, explode gas device 9 and set up in membrane module 7 lower part, explode gas device 9 and pass through the control of exploding gas controlling means 14 control, macromolecular material and heavy metal are got rid of through one-level filter unit 1 respectively to waste water, organic pollutants in the wastewater are removed by the secondary filtering unit 2, the pH and the water pressure are regulated by the regulating unit 3, the wastewater is filtered by the membrane reaction unit 4, the concentrated solution flows back to the primary filtering unit 1 for circular filtration, and the filtrate is discharged from a water outlet after reaching the standard; the membrane component 7 is a modified hollow fiber tubular membrane component, the membrane in the membrane component 7 adopts a super-thin membrane sheet, and the membrane sheet rotates around the middle anode electrode to form a dynamic membrane bag, so that the membrane utilization rate is high, a support material is not needed, the membrane flux is improved, and the membrane pollution is reduced; the multistage combined filler is formed by sequentially distributing and combining activated carbon fibers, modified slag and natural zeolite from top to bottom, and can effectively adsorb various heavy metals and chemical residual harmful substances in wastewater; the modified slag is prepared by refining waste slag, mechanically crushing the waste slag by using an ultrafine crusher, putting the waste slag into a modifying machine, setting the temperature at 130-150 ℃, adding 1.3 per mill of a KII-560 silane modifier, 0.9 per mill of an auxiliary agent stearic acid, and modifying for 20-25min, so as to obtain modified slag, and greatly improve the adsorption effect of the modified slag; the magnetic nano photocatalytic material is prepared by the steps of mixing magnetic nano Fe3O4 and chitosan alcohol solution in a mixing mass ratio of 2.5:1.3 under the action of ultrasonic waves in an interaction manner, carrying out ultrasonic treatment for 30min, continuously stirring, eluting with absolute ethyl alcohol at room temperature, and drying to obtain the magnetic nano photocatalytic material, wherein organic matters in wastewater can be degraded under the action of visible light; the pH regulator 5 regulates the pH value of the wastewater to be 3.5-6; the gas explosion device 9 is a piston flow gas explosion device adopting a sine wave change rule; the membrane component 7 is arranged at the lower part of the membrane reaction unit 4 to form a height difference with the liquid level, so that filtered water can automatically flow out through pressure, and the membrane component is more efficient, intelligent and environment-friendly; the electric field is an intermittent pulse electric field, and is performed in a mode of electrifying for 5min and powering off for 5min, the pulse voltage is 10-20V, the membrane filtration rate can be continuously changed, and the membrane pollution is improved.

The present invention is not limited to the above-described embodiments, and any variations, modifications, and substitutions that can be made by one skilled in the art without departing from the spirit of the present invention fall within the scope of the present invention.

Claims

1. A wastewater treatment device for effectively improving membrane pollution is characterized by comprising the following components: the device comprises a primary filtering unit (1), a secondary filtering unit (2), a regulating unit (3) and a membrane reaction unit (4); the one-level filter unit (1) embeds the filler, accomplishes primary filtration, the filler is the multi-stage combination filler, second grade filter unit (2) is provided with magnetism nanometer photocatalysis material, accomplishes second grade and filters, adjusting unit (3) embeds pH regulator (5) and pressure regulator (6), membrane reaction unit (4) is including shell (13), membrane module (7), micro oscillator (8), aeration equipment (9), aeration controlling means (14), membrane module (7) is the tubulose membrane module of additional electric field, and the center is provided with anode electrode (11), and the outer lane is rotatable cathode electrode (12), and the membrane is hollow fiber internal pressure membrane (10), distributes between negative and positive two-level, micro oscillator (8) set up on outer lane cathode electrode (12), aeration equipment (9) set up in membrane module (7) lower part, the aeration device (9) is controlled by an aeration control device (14), the wastewater is respectively subjected to removal of macromolecular substances and heavy metals by a primary filtering unit (1), organic pollutants in the wastewater are removed by a secondary filtering unit (2), the pH and the water pressure are regulated by a regulating unit (3), the wastewater is filtered by a membrane reaction unit (4), concentrated solution flows back to the primary filtering unit (1) for circular filtration, and the filtrate is discharged from a water outlet after reaching the standard;

the membrane component (7) is a modified hollow fiber tubular membrane component, a super-thin membrane is adopted as a membrane in the membrane component (7), and the membrane rotates around a middle anode electrode to form a dynamic membrane bag;

the multistage combined filler is formed by sequentially distributing and combining activated carbon fibers, modified slag and natural zeolite from top to bottom;

the modified slag is prepared by the steps of homogenizing the waste slag, mechanically crushing the waste slag by using an ultrafine crusher, putting the crushed waste slag into a modifying machine, setting the temperature at 130-150 ℃, adding 1.3 per mill of a KII-560 silane modifier, 0.9 per mill of an auxiliary agent stearic acid, and modifying for 20-25min to obtain modified slag;

the magnetic nano photocatalytic material is prepared by the steps of carrying out interaction mixing on magnetic nano Fe3O4 and a chitosan alcohol solution under the action of ultrasonic waves according to the mixing mass ratio of 2.5:1.3, carrying out ultrasonic treatment for 30min, continuously stirring, eluting with absolute ethyl alcohol at room temperature, and then carrying out drying treatment to obtain the magnetic nano photocatalytic material;

the pH value of the wastewater is adjusted to 3.5-6 by the pH adjuster (5);

the aeration device (9) is a piston flow aeration device adopting a sine wave change rule;

the membrane component (7) is arranged at the lower part of the membrane reaction unit (4) to form a height difference with the liquid level, so that filtered water can be discharged through pressure;

the electric field is an intermittent pulse electric field, and is performed in a mode of electrifying for 5min and powering off for 5min, and the pulse voltage is 10-20V;

the wastewater treatment device capable of effectively improving membrane pollution is applied to wastewater treatment.