Magnesium-carbon primary battery reaction tank

Abstract

The utility model relates to the technical field of organic wastewater treatment, and discloses a magnesium-carbon primary battery reaction tank which comprises a reaction tank, a water inlet pipe is arranged inside the left side of the reaction tank, a water outlet pipe is arranged inside the right side of the reaction tank, and a first slag discharge tank and a second slag discharge tank are arranged inside the upper side of the reaction tank. A negative plate magnesium plate and a positive plate carbon plate are arranged in the reaction tank, a sludge scraper is arranged in the reaction tank, and the bottom end of the water inlet pipe is fixedly connected with a sludge accumulation hopper. According to the utility model, magnesium ions react with ammonia nitrogen and phosphate in the wastewater to generate magnesium ammonium phosphate precipitates, so that multiple purposes are realized, the content of hydrogen ions in the wastewater is reduced, the acidity of the wastewater is relieved, the content of ammonia nitrogen and phosphate ions is directly reduced, and the production cost is reduced. The burden of nitrification, denitrification and biochemical phosphorus removal of a subsequent biochemical system is relieved, and meanwhile, the dosage of phosphorus removal in deep treatment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to organic wastewater treatment technical field especially relates to a magnesium carbon primary cell reaction pool.

[0002] BACKGROUND

[0003] In the pretreatment stage of the white liquor wastewater treatment, a relatively strict flocculation precipitation + air flotation process is designed, but since the flocculation precipitation and air flotation only remove the sediment and dregs, the removal effect of ammonia nitrogen and phosphate is poor, which leads to the high content of ammonia nitrogen and phosphate in the anaerobic system, and the crystalline of ammonium magnesium sulfate is easily produced in the anaerobic tank, resulting in the serious scaling of the components in the tank, sludge calcification and activity reduction.

[0004] The existing white liquor wastewater treatment has obvious deficiencies in dealing with the removal of ammonia nitrogen and phosphate, reducing the load of the subsequent treatment system and reducing the amount of chemicals, and cannot efficiently remove ammonia nitrogen and phosphate. SUMMARY

[0005] In order to make up for the above deficiencies, the utility model provides a magnesium carbon primary cell reaction pool, aiming at improving the problem that the existing white liquor wastewater treatment cannot efficiently remove ammonia nitrogen and phosphate.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] A magnesium carbon primary cell reaction pool, comprising a reaction tank, a water inlet pipe is arranged inside the left side of the reaction tank, a water outlet pipe is arranged inside the right side of the reaction tank, a slag discharge groove one and a slag discharge groove two are arranged inside the upper side of the reaction tank, a negative plate magnesium plate and a positive plate carbon plate are arranged inside the reaction tank, a mud scraper is arranged inside the reaction tank, and a mud accumulation hopper is fixedly connected to the bottom end of the water inlet pipe.

[0008] Preferably, the negative plate magnesium plate and the positive plate carbon plate are arranged in the reaction tank, and the two are connected by wires to form a primary cell.

[0009] Preferably, the water inlet pipe is communicated with the reaction tank for inputting white liquor wastewater, and the water outlet pipe is communicated with the reaction tank for discharging treated wastewater.

[0010] Preferably, the negative plate magnesium plate acts as a negative electrode in the primary cell reaction, loses electrons to generate magnesium ions, and the magnesium ions react with ammonia nitrogen and phosphate in the white liquor wastewater to generate ammonium magnesium phosphate precipitate.

[0011] Preferably, the mud scraper is arranged in the reaction tank for scraping the sediment to the mud accumulation hopper and scraping the dregs to the slag discharge groove one and the slag discharge groove two.

[0012] Preferably, the positive plate carbon plate in the original battery reaction as a positive electrode, the hydrogen ion near the positive electrode gets electrons to produce hydrogen.

[0013] Preferably, the scraper of the mud scraper moves in the reaction tank, when the scraper is turned over to the upper part of the reaction tank, the gas bubbles generated by the original battery and the generated dregs are scraped and discharged to the dregs discharge groove one and the dregs discharge groove two, and the sediment can be scraped to the accumulated sludge hopper at the water outlet end.

[0014] Preferably, the reaction tank is a plurality of series, and the plurality of series of reaction tanks can be multi-stage series according to the reaction time and the ammonia nitrogen and phosphate concentration of the influent water.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, magnesium ions react with ammonia nitrogen and phosphate in wastewater to generate magnesium ammonium phosphate precipitate, achieving the effect of killing two birds with one stone, not only reducing the hydrogen ion content in wastewater, relieving the acidity of wastewater, and reducing the amount of alkali required for subsequent pH adjustment, but also directly reducing the content of ammonia nitrogen and phosphate ions, reducing the burden of subsequent nitrification and denitrification and biochemical phosphorus removal in the biochemical system, and reducing the amount of phosphorus removal in advanced treatment.

[0017] 2. In the utility model, the principle of original battery is used as the core, and the reaction is driven without additional power equipment, and the original battery is formed by magnesium plate and carbon plate in the liquor wastewater, and the generation of magnesium ions and the removal of pollutants are realized through oxidation-reduction reaction, which not only reduces the investment cost of power equipment, but also avoids the purchase, installation and maintenance cost of equipment.

[0018] 3. In the utility model, when treating liquor wastewater with different water quality, multi-stage series can be used according to the concentration of ammonia nitrogen, phosphate and other pollutants in water and the actual reaction time required, the reaction series is increased, the wastewater is reacted in a plurality of reaction tanks in turn, the pollutants are gradually removed, the depth and precision of treatment are improved, and the water quality is ensured to be stable and up to standard. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The utility model provides a kind of magnesium carbon original battery reaction pool's water inlet pipe local structure diagram;

[0020] Figure 2 The utility model provides a kind of magnesium carbon original battery reaction pool's positive plate carbon plate local structure schematic diagram;

[0021] Figure 3 The utility model provides a kind of magnesium carbon original battery reaction pool's mud scraper local structure schematic diagram;

[0022] Figure 4A kind of magnesium carbon primary battery reaction pool's local structure diagram of deslagging groove one is proposed in the utility model.

[0023] Legend:

[0024] 1, inlet pipe;2, reaction tank;3, negative plate magnesium plate;4, positive plate carbon plate;5, deslagging groove one;6, outlet pipe;7, deslagging groove two;8, mud scraper;9, mud accumulation hopper. Specific embodiments

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the specification of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0026] Reference Figures 1-3 , the utility model provides an embodiment: a kind of magnesium carbon primary battery reaction pool, including reaction tank 2, the left side inside of reaction tank 2 is provided with inlet pipe 1, the right side inside of reaction tank 2 is provided with outlet pipe 6, the upper side inside of reaction tank 2 is provided with deslagging groove one 5 and deslagging groove two 7, the inside of reaction tank 2 is provided with negative plate magnesium plate 3 and positive plate carbon plate 4, the inside of reaction tank 2 is provided with mud scraper 8, the bottom end of inlet pipe 1 is fixedly connected with mud accumulation hopper 9;Inlet pipe 1 is communicated with reaction tank 2, for input liquor wastewater, outlet pipe 6 is communicated with reaction tank 2, for discharging the wastewater after processing;

[0027] Specifically, in actual installation, the size of the pipe diameter of inlet pipe 1 is reasonably selected according to the input flow of liquor wastewater, to ensure that the wastewater can flow into reaction tank 2 stably and smoothly, the pipe diameter of outlet pipe 6 also needs to be determined according to the discharge requirement of the treated wastewater, to ensure that the treated wastewater can be discharged in time, to avoid accumulation in reaction tank 2, reaction tank 2 is made of polyurethane coating stainless steel, to prolong the service life of reaction tank 2, the arrangement of negative plate magnesium plate 3 and positive plate carbon plate 4 in reaction tank 2 should ensure uniform spacing, so that the primary battery reaction can be more sufficient and stable, to improve the reaction efficiency.

[0028] Reference Figure 3 And Figure 4 , inlet pipe 1 is communicated with reaction tank 2, for input liquor wastewater, outlet pipe 6 is communicated with reaction tank 2, for discharging the wastewater after processing;Negative plate magnesium plate 3 acts as a negative electrode in the primary battery reaction, loses electrons to generate magnesium ions, which react with ammonia nitrogen and phosphate in liquor wastewater to form ammonium magnesium phosphate precipitate;Mud scraper 8 is arranged in reaction tank 2, to scrape the precipitate to mud accumulation hopper 9, and to scrape the dross to deslagging groove one 5 and deslagging groove two 7;

[0029] Specifically, the negative plate magnesium plate 3 selects a magnesium metal with high purity to ensure that the magnesium metal can stably lose electrons to generate magnesium ions in the primary battery reaction; the scraper of the mud scraper 8 is made of rubber material, which can effectively remove the sediment and dregs without damaging the inner wall of the reaction tank 2.

[0030] Referring to Figure 1 and Figure 4 , the positive plate carbon plate 4 acts as a positive electrode in the primary battery reaction, and the hydrogen ions near the positive electrode obtain electrons to generate hydrogen gas; the scraper of the mud scraper 8 moves in the reaction tank 2, and when the scraper is turned over to the upper part of the reaction tank 2, the bubbles generated by the primary battery and the generated dregs are removed and discharged to the dregs discharge tank 5 and the dregs discharge tank 7, and the sediment can be scraped into the sediment hopper 9 at the water outlet end; the reaction tank 2 is in multiple series, and the multiple series of reaction tanks 2 can be connected in multiple stages according to the reaction time and the concentration of ammonia nitrogen and phosphate in the water.

[0031] Specifically, the positive plate carbon plate 4 selects a graphite plate to ensure that it can efficiently transfer electrons in the primary battery reaction; during the reaction process, the generation of bubbles in the reaction tank 2 is observed, and if the bubble generation is abnormal, it may indicate a problem with the primary battery reaction, and the connection of the positive and negative plates and the change in the composition of the liquor wastewater need to be checked in a timely manner; for the reaction tank 2 connected in multiple stages, the connecting pipeline should be made of a material that is corrosion-resistant and has good sealing performance to ensure the smooth flow of wastewater between the reaction tanks at each stage and to avoid leakage of wastewater.

[0032] Working principle: when the device needs to be used, the liquor wastewater is flowed into the reaction tank 2 from the water inlet pipe 1, the magnesium metal plate 3 and the positive plate carbon plate 4 are uniformly and intervaliy distributed in the reaction tank 2 as negative and positive electrodes, the positive and negative electrodes are connected by wires, and the liquor wastewater contains various electrolytes, which can act as a salt bridge to start the primary battery; at the negative electrode, the magnesium plate undergoes an oxidation reaction to lose electrons and generate magnesium ions into the wastewater; near the positive plate carbon plate 3, the hydrogen ions obtain electrons to undergo a reduction reaction and consume a part of the hydrogen ions in the wastewater; the magnesium ions generated by the magnesium primary battery mechanism produce sediment; as the reaction proceeds, the ammonia nitrogen and phosphate in the wastewater are continuously converted into sediment, thereby reducing the content of ammonia nitrogen and phosphate.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements for some of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A magnesium-carbon galvanic cell reaction vessel, comprising a reaction tank (2), characterized in that: The reaction tank (2) has an inlet pipe (1) inside the left side and an outlet pipe (6) inside the right side. The reaction tank (2) has a slag discharge trough one (5) and a slag discharge trough two (7) inside the upper side. The reaction tank (2) has a negative electrode plate magnesium plate (3) and a positive electrode plate carbon plate (4) inside. The reaction tank (2) has a sludge scraper (8) inside. The bottom end of the inlet pipe (1) is fixedly connected to a sludge hopper (9).

2. The magnesium-carbon galvanic cell reactor according to claim 1, characterized in that: The negative electrode magnesium plate (3) and the positive electrode carbon plate (4) are both placed in the reaction tank (2), and the two are connected by wires to form a galvanic cell.

3. The magnesium-carbon galvanic cell reactor according to claim 1, characterized in that: The inlet pipe (1) is connected to the reaction tank (2) and is used to input liquor wastewater. The outlet pipe (6) is connected to the reaction tank (2) and is used to discharge the treated wastewater.

4. The magnesium-carbon galvanic cell reactor according to claim 1, characterized in that: The magnesium plate (3) serves as the negative electrode in the galvanic cell reaction. It loses electrons to generate magnesium ions, which react with ammonia nitrogen and phosphate in the liquor wastewater to generate magnesium ammonium phosphate precipitate.

5. A magnesium-carbon galvanic cell reactor according to claim 1, characterized in that: The sludge scraper (8) is installed in the reaction tank (2) to scrape the sediment to the sludge hopper (9) and to scrape the scum to the first scum discharge hopper (5) and the second scum discharge hopper (7).

6. The magnesium-carbon galvanic cell reactor according to claim 1, characterized in that: The positive electrode carbon plate (4) serves as the positive electrode in the galvanic cell reaction, and hydrogen ions near the positive electrode gain electrons to produce hydrogen gas.

7. A magnesium-carbon galvanic cell reactor according to claim 1, characterized in that: The scraper of the scraper (8) moves in the reaction tank (2). When the scraper flips to the upper part of the reaction tank (2), it scrapes off the bubbles and scum generated by the galvanic cell and discharges them into the first scum discharge tank (5) and the second scum discharge tank (7). It can also scrape the sediment into the sludge hopper (9) at the water outlet.

8. A magnesium-carbon galvanic cell reactor according to claim 7, characterized in that: The reaction tank (2) consists of multiple tanks connected in series. The multiple reaction tanks (2) connected in series can be connected in multiple stages according to the reaction time and the concentration of ammonia nitrogen and phosphate in the influent.

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