Modified corncob synergistic pyrrhotite reactor

Abstract

The utility model discloses a modified corncob synergistic pyrrhotite reactor, which relates to the field of sewage treatment equipment, and comprises a rack, the rack is placed in a rear-mounted denitrification filter tank, a plurality of layers of filter boxes are placed in the rack, filter holes are uniformly distributed on the filter boxes, and modified corncobs and pyrrhotite are mixed and stored in the filter boxes. According to the utility model, the rack and the filter box are matched to mix the modified corncobs and the pyrrhotite to serve as a filler layer of the rear-mounted denitrification tank, the corncobs are utilized to continuously provide a carbon source for the denitrification tank, and the pyrrhotite is utilized as a sulfur autotrophic denitrification electron donor, so that mixed nutrition denitrification is realized, and the denitrification efficiency is improved. The synchronous removal of nitrogen and phosphorus elements is realized in the denitrification process, and the cost of deep nitrogen and phosphorus removal treatment is effectively reduced by using the corncob and the pyrrhotite.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment, and in particular to a modified corn cob synergistic pyrrhotite reactor. Background Technology

[0002] Currently, the impact of low-pollution water on the water environment of river basins is receiving attention. Low-pollution water, as the primary "source" of water flowing into river basins, mainly refers to wastewater from polluted bodies that, after engineering treatment, still contains low concentrations of major pollutants but meets discharge standards. Low-pollution water is characterized by its large volume, wide range of sources, and the presence of large amounts of substandard nitrogen, phosphorus, and organic matter. Its discharge into surface water bodies leads to eutrophication and the decline of the watershed's aquatic ecosystem. The main sources of low-pollution water are wastewater treatment facilities, such as urban wastewater treatment plants and integrated rural wastewater treatment facilities. While the effluent from urban wastewater treatment plants can meet the national Class I discharge standards, achieving higher standards often requires advanced denitrification. However, the carbon sources in the effluent at this stage are often insufficient for denitrification, thus carbon sources become a limiting factor in nitrogen and phosphorus removal processes.

[0003] Therefore, how to perform deep nitrogen and phosphorus removal treatment on low-pollution water at low cost and high efficiency has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a modified corn cob synergistic pyrrhotite reactor to solve the problem of high cost of deep denitrification and phosphorus removal in existing low-pollution water.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model provides a modified corn cob and pyrrhotite co-processing reactor, including a frame placed in a post-denitrification filter, multiple filter boxes placed in the frame, filter boxes having filter holes evenly distributed on them, and modified corn cob and pyrrhotite mixed and stored in the filter boxes.

[0007] Optionally, the frame is frame-shaped, with a break-proof round tube horizontally installed on the top of the frame, and multiple hooks symmetrically installed on the outer side of the middle of the frame.

[0008] Optionally, the size of the filter box is matched with the size of the post-denitrification tank.

[0009] Optionally, the size of the filter pores is less than 3 mm.

[0010] Optionally, hanging ropes are symmetrically arranged at both ends of the top of the filter box.

[0011] Optionally, the filter box is provided with an auxiliary layer plate inside. The auxiliary layer plate includes a frame, and multiple connecting rods are arranged in parallel inside the frame. Two pairs of plates are hinged to each connecting rod. The width of the pairs of plates is less than half of the distance between two adjacent connecting rods. A handle is installed on the frame.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] This invention uses a combination of a frame and a filter box to mix modified corn cobs and pyrrhotite as the packing layer for a post-denitrification tank. The corn cobs provide a sustainable carbon source for the denitrification tank, while the pyrrhotite acts as an electron donor for sulfur autotrophic denitrification, achieving mixed nutrient denitrification. During the denitrification process, nitrogen and phosphorus are removed simultaneously. The use of corn cobs and pyrrhotite effectively reduces the cost of deep nitrogen and phosphorus removal treatment.

[0014] The multi-layer filter box and auxiliary layering plate help to mix the modified corn cob and pyrrhotite more evenly, thus improving the denitrification effect. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the modified corn cob synergistic pyrrhotite reactor of this utility model;

[0017] Figure 2 This is a schematic diagram of the filter box structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the auxiliary layered plate structure of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Filter box; 11. Anti-breakage round tube; 12. Hook; 21. Filter hole; 22. Hanging rope; 23. Auxiliary layering plate; 231. Frame; 232. Alignment plate; 233. Handle. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0021] like Figure 1-3 As shown, a modified corn cob and pyrrhotite reactor includes a frame 1, which is placed in a post-denitrification filter. The frame 1 contains multiple filter boxes 2, each with a uniformly distributed filter hole 21. The filter boxes 2 contain a mixture of modified corn cob and pyrrhotite.

[0022] The modified corn oxide was obtained by soaking corn cobs in a mixed solution of hydrogen peroxide and sodium hydroxide. The pyrrhotite particles had a diameter of no more than 3 mm.

[0023] Specifically, the frame 1 is frame-shaped, and a breakage-proof round tube 11 is horizontally installed on the top of the frame 1. Multiple hooks 12 are symmetrically installed on the outer side of the middle of the frame 1.

[0024] Specifically, the size of the filter box 2 matches the size of the post-denitrification tank.

[0025] Specifically, the size of the filter hole 21 is less than 3mm.

[0026] Specifically, hanging ropes 22 are symmetrically arranged at both ends of the top of the filter box 2.

[0027] Specifically, the filter box 2 is provided with an auxiliary layer plate 23. The auxiliary layer plate 23 includes a frame 231. Multiple connecting rods are arranged in parallel inside the frame 231. Two opposing plates 232 are hinged to each connecting rod. The width of the opposing plates 232 is less than 1 / 2 of the distance between two adjacent connecting rods. A handle 233 is installed on the frame 231.

[0028] Both pyrrhotite and modified corn cob have rough surfaces that can fix microorganisms. In particular, the surface of pyrrhotite has protrusions and grooves, which, when mixed with modified corn cob, can better enable the biofilm to contact the modified corn cob and facilitate the biofilm to obtain carbon source.

[0029] The usage process of this utility model is as follows:

[0030] Filter box 2 installation procedure: First, lay the modified corn cobs at the bottom of filter box 2, filling the entire layer. Then, cover the modified corn cobs in filter box 2 with the auxiliary layering plate 23. Next, pour pyrrhotite onto the auxiliary layering plate 23 and spread it evenly. Then, pull up the auxiliary layering plate 23 using handle 233. During the pulling process, under the influence of the pyrrhotite's own gravity, the hinged plate 232 on the connecting rod opens, and the pyrrhotite falls onto the modified corn cobs after passing through the hinged plate 232. Finally, close the lid of filter box 2.

[0031] Due to the significant difference in specific gravity between modified corn cob and pyrrhotite, directly placing the mixed modified corn cob and pyrrhotite into the post-denitrification tank easily leads to stratification, with pyrrhotite at the bottom and modified corn cob at the top, resulting in uneven mass transfer. Placing the modified corn cob and pyrrhotite into filter boxes 2, and then placing multiple filter boxes 2 layered into the post-denitrification tank, effectively solves the stratification problem.

[0032] The auxiliary layering plate 23 effectively solves the problem of uneven mixing that easily occurs when pyrrhotite is directly poured onto modified corn cobs. At the same time, due to the difference in specific gravity between modified corn cobs and pyrrhotite, the upper layer of pyrrhotite tends to sink, facilitating further uniform mixing of the modified corn cobs and pyrrhotite within the filter box 2.

[0033] Placement of filter box 2: After the hanging rope 22 is wrapped around the anti-breakage round pipe 11, slowly release the hanging rope 22 until the filter box 2 touches the bottom in the post-denitrification tank. Then, tie the hanging rope to the anti-breakage round pipe 11.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A modified corn cob synergistic pyrrhotite reactor, characterized in that: Includes a frame (1), which is placed in a post-denitrification filter tank. The frame (1) contains multiple filter boxes (2), and the filter boxes (2) are evenly distributed with filter holes (21). The frame (1) is frame-shaped, and a break-proof round pipe (11) is horizontally installed on the top of the frame (1). Multiple hooks (12) are symmetrically installed on the outer side of the middle of the frame (1), and the hooks (12) are attached to the post-denitrification filter.

2. The modified corn cob synergistic pyrrhotite reactor according to claim 1, characterized in that: The size of the filter box (2) is matched with the size of the post-denitrification filter.

3. The modified corn cob synergistic pyrrhotite reactor according to claim 1, characterized in that: The size of the filter hole (21) is less than 3 mm.

4. The modified corn cob synergistic pyrrhotite reactor according to claim 1, characterized in that: Hanging ropes (22) are symmetrically arranged at both ends of the top of the filter box (2).

5. The modified corn cob synergistic pyrrhotite reactor according to claim 1, characterized in that: The filter box (2) is provided with an auxiliary layer plate (23). The auxiliary layer plate (23) includes a frame (231). Multiple connecting rods are arranged in parallel inside the frame (231). Two pairs of plates (232) are hinged on each connecting rod. The width of the pairs of plates (232) is less than 1 / 2 of the distance between two adjacent connecting rods. A handle (233) is installed on the frame (231).

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