CN202865059U - Integral type sewage treatment device - Google Patents

Abstract

The utility model discloses an integral type sewage treatment device. The integral type sewage treatment device comprises a UV (Ultra Violet) decomposition processor which comprises a membrane bioreaction processor, an ozone generation system and at least one UV light source. Through adopting a combination treatment technical scheme, the separation of the sewage by a membrane and the degradation of organisms by active sludge, the advanced oxidation is conducted through hydroxyl radicals. The integral type sewage treatment device disclosed by the utility model can not only remove the macromolecular organisms, viruses and microbes which exist in the sewage by carrying out aeration treatment by adopting an aeration unit positioned in the membrane bioreaction processor and degradation treatment by adopting aerobic microbes contained in biological active sludge, but also generate the hydroxyl radicals with greatly high oxidation property by irradiating ultraviolet on a gas-liquid mixed body of ozone and water molecules. According to the utility model, the hydroxyl radicals enable the organisms contained in water to be thoroughly decomposed by utilizing greatly high self oxidation property and further remove the microbes, and the products are carbon dioxide and water, therefore the purposes of excellent deodorization, decolorization, sterilization of the sewage and removal of COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand) and harmful substances, namely, ammonia, nitrogen, phosphorus, and the like are realized.

Description

Integrated sewage treatment device

technical field

The utility model relates to a sewage treatment device combined with various sewage treatment technologies, in particular to the use of a membrane bioreactor (Membrane Bio-Reactor, referred to as MBR), and an advanced oxidation process (Advanced Oxidation Processes, referred to as AOP technology), etc. It belongs to the technical field of water pollution treatment.

Background technique

Environmental protection of water resources is an issue of widespread concern in today's society. For a long time, people have used different technologies and methods to treat sewage. There are three types of commonly used sewage treatment methods. First, physical treatment methods such as grille, filtration, sedimentation, air flotation, and reverse osmosis are used for water pollution treatment; second, chemical treatment methods such as electrolysis, redox, adsorption, and extraction are used. ; Third, the use of activated sludge method, biofilm method, microbial decomposition and other methods to convert the organic pollutants in the sludge into a biological treatment method of harmless substances. Among them, the biological treatment method is an increasingly common method to deal with water pollution. There are many disadvantages in using the existing sewage treatment technology for sewage treatment. For example, the treatment of macromolecular substances in sewage is relatively difficult no matter which method is used.

Due to the poor oxidation ability and selectivity of the reaction, the traditional chemical oxidation method often cannot directly achieve the purpose of completely removing organic matter and reducing total organic carbon (TOC) and chemical oxygen demand (COD). . In addition, the traditional chemical oxidation treatment method will cause secondary pollution of water due to its poor oxidation ability and chemical addition treatment. However, the existing biological treatment methods are not effective in treating substances with poor biodegradability and relative molecular masses ranging from several thousand to tens of thousands. Moreover, if the biological treatment of microorganisms is not thorough enough, it will also lead to problems such as poor effluent quality. Therefore, traditional chemical oxidation and biological treatment methods are becoming less and less acceptable.

Membrane bioreactor is a new type of water treatment technology that combines membrane separation unit and biological treatment unit, and is currently widely used in the field of sewage treatment. The membrane bioreactor replaces the secondary settling tank (Secondary Settling Tank) with membrane modules, and maintains a high concentration of active sludge in its bioreactor, reducing the footprint of sewage treatment facilities, and maintaining low sludge load Reduce sludge volume. Membrane bioreactors include various water treatment technologies such as aeration, solid-liquid separation, and microbial degradation, which can greatly remove viruses, microorganisms, and suspended solids. microorganism. In addition, the membrane bioreactor has no effect on the removal of odor, color, COD, BOD, ammonia, nitrogen, phosphorus, etc. in the water.

Contents of the invention

In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides an integrated sewage treatment device, which adopts the integrated combination scheme of the membrane biological reaction processor and the advanced oxidation technology, and uses the microorganisms in the activated sludge and the aeration system to eliminate the organic matter. The degradation function is combined with the separation function of the membrane for sewage. After the water is discharged, it is treated with ozone and ultraviolet light, and then undergoes an advanced oxidation process of hydroxyl radicals (.OH), ensuring better water quality. The technical scheme that the utility model adopts for solving its technical problem is as follows:

An integrated sewage treatment device, which includes a front box and a rear box, wherein the upper part of the front box is a PIC electronic control system, and the lower part is an advanced oxidation unit. The advanced oxidation unit includes a gas-liquid mixing pump, an automatic Suction pump, ozone generation system, UV decomposition processor; the rear box includes a membrane bioreaction processor, an external submersible pump is connected to the rear box, and the membrane bioreaction processor is connected to the self-priming pump. The self-priming pump is connected in series with the gas-liquid mixing pump, the ozone generating system is connected with the gas-liquid mixing pump, and the gas-liquid mixing pump is connected with the UV decomposition processor; the UV decomposition processor Contains at least one UV light source, the PIC electronic control system simultaneously controls the work of the UV decomposition processor and the ozone generator, and the pipeline connected to the air pump is directly connected to the aeration unit at the bottom of the membrane bioreactor .

Preferably, the ozone generating system includes a molecular sieve, an oil-free compressor and a high-voltage corona generator.

The membrane bioreactor includes a membrane module unit for membrane separation and a biological treatment unit for containing activated sludge. Wherein, the membrane module unit is composed of a polyethylene hollow fiber membrane module, and the polyethylene hollow fiber membrane module separates water in the sludge, thereby performing solid-liquid separation.

Further, the aeration unit is at the bottom of the membrane bioreactor and includes several aeration holes for aerating the injected sewage.

Further, the integrated sewage treatment device also includes a liquid level controller, which adjusts the water level in the rear tank by controlling the submersible pump and the self-priming pump.

The water treated by the membrane bioreactor is injected into the gas-liquid mixing pump through the self-priming pump, and the high-concentration ozone generated by the ozone generation system also enters the gas-liquid mixing pump, so that the high-concentration ozone Fully mixed with water molecules in the gas-liquid mixing pump.

The utility model adopts the above technical scheme and has obvious beneficial effects. First, the aeration unit in the membrane bioreactor is used for aeration treatment and the microorganisms in the biologically activated sludge are degraded, which greatly removes the macromolecular organic matter in the sewage and converts the organic matter into non-toxic and harmless substances . Second, the water treated by the membrane bioreactor is combined with the ozone generated by the ozone generation system, and is sterilized by ultraviolet radiation. The strong oxidizing property can completely decompose the remaining organic matters in the water, further remove microorganisms, and achieve the purpose of deodorization, decolorization, disinfection and sterilization.

Because the hydroxyl radical and the organic matter undergo a chain reaction of the hydroxyl radical; further oxidation and decomposition reactions occur until the toxic and harmful organic matter in the water is degraded into carbon dioxide and water. The utility model utilizes that the difference between the reaction rate constants of the hydroxyl radical and different organic substances is very small, and when there are multiple pollutants in the water, there will be no situation that one substance is degraded while the other substance remains basically unchanged. In addition, hydroxyl radicals can directly react with pollutants in wastewater to degrade them into carbon dioxide, water and harmless substances, so there will be no secondary pollution. Furthermore, the intermediate products produced during the oxidation process can continue to react with hydroxyl radicals until they are completely oxidized into carbon dioxide and water, thereby achieving the purpose of more thorough purification of sewage.

Description of drawings

The following drawings of the utility model are used as a part of the utility model for understanding the utility model. Embodiments of the utility model and description thereof are shown in the accompanying drawings, which are used to explain the principle of the utility model.

Fig. 1 is a schematic structural view of a specific embodiment of the integrated sewage treatment device according to the present invention;

Fig. 2 is a top view of a specific embodiment of the integrated sewage treatment device according to the present invention.

Detailed ways

In order to further explain the technical means and beneficial effects adopted by the utility model to achieve its purpose, and can implement the utility model according to the detailed introduction of this specification, the utility model will be described below in conjunction with the accompanying drawings and preferred embodiments of the utility model. The specific implementation of the new model is described in detail below.

The utility model discloses an integrated sewage treatment device, which adopts the combination of membrane biological reaction processor and advanced oxidation technology, degrades organic matter through activated sludge method and separates sewage from membrane, and then passes through hydroxyl free radical after effluent Advanced oxidation ensures better effluent quality.

Fig. 1 shows a schematic structural view of a specific embodiment of an integrated sewage treatment device according to the present invention. Fig. 2 shows a top view of a specific embodiment of the integrated sewage treatment device according to the present invention. 1 and 2, it can be seen that the integrated sewage treatment device according to the present invention includes: a membrane bioreactor 1, a UV decomposition processor 2 including at least one UV light source, an ozone generation system 3, and a sewage water inlet 4 , clean water outlet 5, submersible pump 6, air pump 7, gas-liquid mixing pump 8, PIC electric control system 9 and self-priming pump 10. Wherein, the sewage water inlet 4 is connected to the back box where the membrane bioreaction processor 1 is located, and the submersible pump 6 pumps the sewage in the sewage well into the back box where the membrane bioreaction processor 1 is located through the sewage water inlet 4 . The membrane bioreactor 1 is connected to the gas-liquid mixing pump 8 through the self-priming pump 10, the ozone generating system 3 is connected to the gas-liquid mixing pump 8, and the water treated by the membrane bioreactor 1 flows into the gas-liquid mixing pump 8 , mixed with the ozone generated in the ozone generating system 3. Preferably, the UV decomposition processor 2 and the ozone generating system 3 are connected in the PIC electronic control system 9, and are controlled by the PIC electronic control system 9 to work at the same time; the air pump 7 is directly connected to the The aeration unit 102 at the bottom of the membrane bioreactor 1 is connected.

In a preferred embodiment, the integrated sewage treatment device of the present utility model consists of a front box and a rear box. Wherein, the front box includes upper and lower parts, the upper part is the PIC electronic control system 9, and the lower part is the advanced oxidation unit. The advanced oxidation unit includes a UV decomposition processor 2 , an ozone generating system 3 , a gas-liquid mixing pump 8 , and a self-priming pump 10 . Preferably, the ozone generating system 3 includes a molecular sieve, an oil-free compressor and a high-voltage corona generator.

The back box includes a membrane bioreactor 1, and an external submersible pump 6 is connected to the back box. The membrane bioreactor 1 is connected to the self-priming pump 10, the self-priming pump 10 is connected in series with the gas-liquid mixing pump 8, the ozone generating system 3 is connected to the gas-liquid mixing pump 8, The gas-liquid mixing pump 8 is connected with the UV decomposition processor 2 . The UV decomposition processor 2 includes at least one UV light source. The PIC electronic control system simultaneously controls the work of the UV decomposition processor and the ozone generator.

The sewage is pumped out from the sewage well by the submersible pump 6 into the rear box where the membrane bioreactor 1 is located. The liquid level controller 11 is connected with the membrane bioreactor 1, and it adjusts the water level in the rear tank by controlling the submersible pump 6 and the self-priming pump 10. The membrane bioreactor 1 includes a membrane module unit 101 for membrane separation and a biological treatment unit (not shown in the figure) containing activated sludge. The membrane module unit 101 is composed of a polyethylene hollow fiber membrane module, and the polyethylene hollow fiber membrane module can separate water in sludge. The membrane bioreactor 1 can simultaneously play the dual roles of biofilm carrier and bubble-free aeration. It can be seen from Fig. 1 that the aeration unit 102 is placed at the bottom of the membrane bioreactor 1, and the aeration unit 102 includes several aeration holes. The pipeline connected to the air pump 7 is directly connected to the aeration unit 102 at the bottom of the membrane bioreactor 1 .

The membrane bioreactor 1 first aerates the injected sewage through the aeration unit 101, so that the organic particles in the sewage are in a suspended state, and the suspended matter is generated and aerobic by the activated sludge in the biological treatment unit. The microorganisms degrade the organic matter in the water; then the solid-liquid separation process is carried out through the polyethylene hollow fiber membrane module, and the suspended matter is separated from the liquid. The selection of polyethylene hollow fiber membranes can effectively separate the water in the sludge and make the water enter the next treatment link. After the sewage is sequentially treated by the membrane module unit 101 and the biological treatment unit in the membrane bioreactor 1, viruses, microorganisms and suspended solids in the water can be largely removed.

As shown in Fig. 1, the water treated by the membrane bioreactor 1 is injected into the gas-liquid mixing pump 8, and the high-concentration ozone generated by the ozone generation system 3 enters the gas-liquid mixing pump 8, thereby making the high-concentration ozone flow in the water Molecules are fully dissolved and combined with water molecules. Under the irradiation of ultraviolet rays emitted by the UV decomposition processor 2, the photoelectrochemical reaction is used to perform disinfection and sterilization, break bonds of light waves to degrade organic matter, activate water molecules, and generate hydroxyl radicals with strong oxidizing ability. Hydroxyl radical is an important active substance, which is formed by the loss of an electron from hydroxide (OHˉ) in terms of molecular formula. Hydroxyl radicals have a very strong electron-acquiring ability, that is, oxidation ability, with an oxidation potential of 2.8V, which is second only to fluorine in nature as an oxidizing agent. This kind of hydroxyl radical with strong oxidation ability not only continues to degrade, deodorize and decolorize various toxic and harmful substances in water, but also has a strong disinfection and sterilization function.

The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of illustration and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, those skilled in the art can understand that the utility model is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teaching of the utility model, and these variations and modifications all fall within the scope of the utility model. within the scope of protection. The protection scope of the utility model is defined by the appended claims and their equivalent scope.

Claims (7)

1. integral type sewage treatment unit, it is characterized in that comprise front casing and rear box, the top of wherein said front casing is divided into the PIC electrical control system, the bottom is divided into the advanced oxidation unit, and described advanced oxidation unit comprises gas-liquid mixing pump, vacuum primingpump, ozone generation system, UV disaggregating treatment device; Described rear box comprises the membrane biological reaction treater, external submersible pump is connected with described rear box, described membrane biological reaction treater links to each other with described vacuum primingpump, described vacuum primingpump is connected in series with described gas-liquid mixing pump, described ozone generation system links to each other with described gas-liquid mixing pump, and described gas-liquid mixing pump is connected with described UV disaggregating treatment device; Described UV disaggregating treatment device comprises at least one UV light source, described PIC electrical control system is controlled the work of described UV disaggregating treatment device and described ozonizer simultaneously, and the pipeline that described air pump connects directly links to each other with the aeration unit of described membrane biological reaction treater bottom.

2. integral type sewage treatment unit according to claim 1 is characterized in that, described ozone generation system comprises molecular sieve, oil free compressor and high-voltage corona producer.

3. integral type sewage treatment unit according to claim 1 is characterized in that, described membrane biological reaction treater comprises membrane module unit for membrane sepn, holds the biological processing unit of active sludge.

4. integral type sewage treatment unit according to claim 3 is characterized in that, described membrane module unit is by polyethylene hollow fiber membrane silk module composition, and described polyethylene hollow fiber membrane silk assembly separates the water in the mud, thereby carries out solid-liquid separation.

5. integral type sewage treatment unit according to claim 1 is characterized in that, described aeration unit is in the bottom of described membrane biological reaction treater and comprise some solarization air caps, and it carries out aeration to the sewage that injects.

6. integral type sewage treatment unit according to claim 1 is characterized in that, also comprises fluid level controller, and it regulates water level height in the rear box by control submersible pump and vacuum primingpump.

7. integral type sewage treatment unit according to claim 1, it is characterized in that, water after the membrane biological reaction treater is processed injects described gas-liquid mixing pump through described vacuum primingpump, the high-concentrated ozone that described ozone generation system produces also enters described gas-liquid mixing pump, thereby so that high-concentrated ozone in described gas-liquid mixing pump, fully mix with water molecules.

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