Landfill leachate pretreatment device for efficient membrane treatment system

Abstract

The utility model belongs to the technical field of landfill leachate treatment and application, and particularly discloses a landfill leachate pretreatment device for an efficient membrane treatment system, which comprises a nitrification component, the efficient membrane treatment system, a skid-mounted frame seat, an infusion pump, a filter box, a liquid guide pipe, a first liquid inlet pipe with a valve, a second liquid inlet pipe with a valve, a filter screen fixing part, a filter screen and the like. The high-efficiency membrane treatment system has the beneficial effects that 1, the skid-mounted frame seat, the infusion pump, the filter box, the liquid guide pipe, the first liquid inlet pipe with the valve, the second liquid inlet pipe with the valve, the filter screen fixing part and the filter screen are matched for use, so that the problem of low treatment efficiency caused by blockage during treatment of the high-efficiency membrane treatment system is solved; meanwhile, the operation safety of the high-efficiency membrane treatment system is also improved, and in addition, the whole device adopts a skid-mounted combined design and is convenient to mount, dismount and maintain; and 2, the added backwashing liquid inlet pipe with the valve and the backwashing liquid circulating guide pipe with the valve are used for backwashing the filter screen during operation, so that the pre-filtering operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of landfill leachate treatment application, and specifically relates to a landfill leachate pretreatment device for a high-efficiency membrane treatment system, which is used for pre-filtering the landfill leachate entering the high-efficiency membrane treatment system after nitrification treatment, thereby improving the efficiency and safety of the overall system operation. Background Art

[0002] The leachate from a waste incineration plant is produced from fresh primary waste, and contains complex pollutants, including organic matter, inorganic matter, and heavy metal ions. Compared with the leachate from a landfill after anaerobic reaction in the landfill, the leachate from an incineration plant has a higher concentration, with the actual measured value reaching over 70,000 mg / L. However, its concentration is relatively low, and the C / N ratio is coordinated, which is conducive to denitrification treatment.

[0003] The leachate contains a large amount of macromolecular organic matter such as humic acid, which has good chemical stability and cannot be effectively degraded by microorganisms alone. The quality of the treated water is required to meet the quality standards of reused water. The TDS content in the original liquid is relatively high, so the membrane treatment process must be used for the back-end deep treatment.

[0004] In addition, the concentration of suspended matter in the incineration plant leachate is relatively high, and a pretreatment system must be set up for the back-end deep treatment to reduce the risk of subsequent membrane system clogging, which greatly affects the subsequent garbage leachate treatment efficiency.

[0005] Therefore, based on the above problems, the utility model provides a landfill leachate pretreatment device for a high-efficiency membrane treatment system. Utility Model Content

[0006] Purpose of the utility model: The purpose of the utility model is to provide a garbage leachate pretreatment device for a high-efficiency membrane treatment system to solve the problem of low treatment efficiency caused by blockage in the high-efficiency membrane treatment system in the existing background technology.

[0007] Technical solution: The utility model is a garbage leachate pretreatment device for a high-efficiency membrane treatment system, comprising a nitrification component and a high-efficiency membrane treatment system, a skid-mounted frame seat is arranged between the nitrification component and the high-efficiency membrane treatment system, the skid-mounted frame seat is provided with a liquid pump and a filter box, the liquid pump is provided with a liquid guide pipe and a first liquid inlet pipe with a valve respectively connected to the nitrification component and the filter box, the filter box is provided with a second liquid inlet pipe with a valve connected to the high-efficiency membrane treatment system, a filter screen fixing portion is arranged in the filter box, and a filter screen is arranged on the filter screen fixing portion; wherein, one end of the first liquid inlet pipe with a valve is connected to an upper side of one surface of the filter box.

[0008] In the technical solution, the garbage leachate pretreatment device for the high-efficiency membrane treatment system also includes a backwash liquid inlet pipe with a valve arranged on the filter box, and a backwash liquid circulation conduit with a valve, whose two ends are respectively connected to the filter box and the nitrification component; wherein, one end of the backwash liquid inlet pipe with a valve is connected to the upper part of the other side of the filter box, and one end of the backwash liquid circulation conduit with a valve is connected to the lower part of one side of the filter box, and is located below the first valved liquid inlet pipe.

[0009] In the technical solution of the present invention, the filter screen includes but is not limited to an arc-shaped structure or a concave structure.

[0010] In the technical solution of the present invention, the filter box, the filter screen fixing part and the filter screen are respectively arranged as circular structures.

[0011] Compared with the prior art, the beneficial effects of the garbage leachate pretreatment device for the high-efficiency membrane treatment system of the utility model are: 1. The skid-mounted frame seat, liquid pump, filter box, liquid guide pipe, first liquid inlet pipe with valve, second liquid inlet pipe with valve, filter screen fixing part and filter screen used in conjunction with each other solve the problem of low treatment efficiency caused by blockage during treatment of the high-efficiency membrane treatment system, and also improve the safety of the operation of the high-efficiency membrane treatment system. In addition, the overall skid-mounted combination design is convenient for installation and disassembly; 2. The added backwashing liquid inlet pipe with valve and the backwashing liquid circulation conduit with valve are used to backwash the filter screen during operation, thereby improving the efficiency of its pre-filtration operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the main structure of the garbage leachate pretreatment device for the high-efficiency membrane treatment system of the utility model;

[0014] Among them, the serial numbers in the figure are as follows: 100-nitrification component, 200-high-efficiency membrane treatment system, 300-skid-mounted frame seat, 301-liquid pump, 302-filter box, 303-liquid guide pipe, 304-first liquid inlet pipe with valve, 305-backwashing liquid inlet pipe with valve, 306-second liquid inlet pipe with valve, 307-filter screen, 308-backwashing liquid circulation conduit with valve, 309-filter screen fixing part. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0016] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Embodiment 1

[0018] like Figure 1 The garbage leachate pretreatment device for the high-efficiency membrane treatment system shown includes a nitrification component 100 and a high-efficiency membrane treatment system 200.

[0019] A skid-mounted frame seat 300 is provided between the nitrification component 100 and the high-efficiency membrane treatment system 200.

[0020] The skid-mounted frame seat 300 is provided with a liquid pump 301 and a filter box 302.

[0021] The liquid pump 301 is provided with a liquid guide pipe 303 and a first liquid inlet pipe 304 with a valve, which are respectively connected to the nitrification component 100 and the filter box 302.

[0022] The filter box 302 is provided with a second liquid inlet pipe 306 with a valve connected to the high-efficiency membrane treatment system 200.

[0023] A filter screen fixing portion 309 is provided in the filter box 302.

[0024] A filter 307 is provided on the filter fixing portion 309;

[0025] Among them, one end of the first valved liquid inlet pipe 304 is connected to the upper part of one side of the filter box 302, and the liquid pump 301 is started. At this time, the liquid pump 301 draws the nitrification leachate of the nitrification component 100 into the filter box 302 through the liquid guide pipe 303 and the first valved liquid inlet pipe 304. The nitrification leachate drawn into the filter box 302 is purified and filtered by the filter screen 307 (coarse filtration, the mesh size of the filter screen 307 is optional and replaced according to actual needs) and then enters the high-efficiency membrane treatment system 200 through the second valved liquid inlet pipe 306 for fine treatment. Embodiment 2

[0026] On the basis of the first embodiment, the garbage leachate pretreatment device for the high-efficiency membrane treatment system further includes a backwashing liquid inlet pipe 305 with a valve disposed on the filter box 302, and a backwashing liquid circulation conduit 308 with a valve connected to the filter box 302 and the nitrification component 100 at both ends;

[0027] Among them, one end of the valved backwashing liquid inlet pipe 305 is connected to the upper part of the other side of the filter box 302, and one end of the valved backwashing liquid circulation conduit 308 is connected to the lower part of one side of the filter box 302, and is located below the first valved liquid inlet pipe 304. After the above-mentioned design structure is used for a certain period of time, the liquid pump 301, the first valved liquid inlet pipe 304, and the second valved liquid inlet pipe 306 are closed, water is supplied through the valved backwashing liquid inlet pipe 305, and the valved backwashing liquid circulation conduit 308 is opened, and the backwashing operation of the circulating filter 307 is realized.

[0028] In addition, the preferred filter screen 307 includes but is not limited to an arc-shaped structure or a concave structure.

[0029] In addition, preferably, the filter box 302, the filter screen fixing portion 309, and the filter screen 307 are respectively configured as circular structures.

[0030] The working principle or structural principle of the garbage leachate pretreatment device for the high-efficiency membrane treatment system of this structure:

[0031] See also Figure 1 :

[0032] (1) Coarse filtration: Start the pump 301. At this time, the pump 301 draws the nitrification leachate of the nitrification component 100 into the filter box 302 through the liquid guide tube 303 and the first liquid inlet pipe 304 with a valve (opened). The nitrification leachate drawn into the filter box 302 is purified and filtered by the filter screen 307 (coarse filtration, the mesh size of the filter screen 307 is optional and replaced according to actual needs) and enters the second liquid inlet pipe 306 with a valve (opened) into the high-efficiency membrane treatment system 200 for fine treatment.

[0033] (2) Backwashing: When backwashing is required, the liquid pump 301, the first liquid inlet pipe with a valve 304, and the second liquid inlet pipe with a valve 306 are closed, water is supplied through the backwashing liquid inlet pipe with a valve 305, and the backwashing liquid circulation conduit with a valve 308 is opened. At this time, the backwashing operation of the circulating filter 307 is realized. The water supply equipment used in conjunction with the backwashing liquid inlet pipe with a valve 305 is not marked, which does not affect the disclosure of the technical solution of this application.

[0034] In the garbage leachate pretreatment device for the high-efficiency membrane treatment system of the present structure, the nitrification component 100, the high-efficiency membrane treatment system 200, the liquid extraction pump 301, etc. are all conventional components or equipment.

[0035] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A landfill leachate pretreatment device for a high-efficiency membrane treatment system, comprising a nitrification component (100) and a high-efficiency membrane treatment system (200), characterized in that: A skid-mounted frame seat (300) is provided between the nitrification component (100) and the high-efficiency membrane treatment system (200). The skid-mounted frame seat (300) is provided with a liquid extraction pump (301) and a filter box (302). The liquid pump (301) is provided with a liquid guide tube (303) and a first liquid inlet tube (304) with a valve, which are respectively connected to the nitrification component (100) and the filter box (302). The filter box (302) is provided with a second liquid inlet pipe (306) with a valve connected to the high-efficiency membrane treatment system (200). The filter box (302) is provided with a filter screen fixing portion (309). The filter fixing portion (309) is provided with a filter (307); One end of the first liquid inlet pipe (304) with a valve is connected to an upper portion of one surface of the filter box (302).

2. The landfill leachate pretreatment device for a high-efficiency membrane treatment system according to claim 1, characterized in that: The garbage leachate pretreatment device for a high-efficiency membrane treatment system also includes a backwash liquid inlet pipe (305) with a valve disposed on the filter box (302), and a backwash liquid circulation conduit (308) with a valve, the two ends of which are respectively connected to the filter box (302) and the nitrification component (100); One end of the backwash liquid inlet pipe (305) with a valve is connected to the upper portion of the other surface of the filter box (302), and one end of the backwash liquid circulation conduit (308) with a valve is connected to the lower portion of one surface of the filter box (302) and is located below the first liquid inlet pipe (304) with a valve.

3. The landfill leachate pretreatment device for a high-efficiency membrane treatment system according to claim 1, characterized in that: The filter screen (307) includes but is not limited to an arc-shaped structure or a concave structure.

4. The landfill leachate pretreatment device for a high-efficiency membrane treatment system according to claim 1, characterized in that: The filter box (302), the filter screen fixing portion (309), and the filter screen (307) are respectively configured as circular structures.

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