CN210419428U - Tower type multistage hydrolysis acidification device - Google Patents

Abstract

The utility model relates to a tower multistage hydrolysis acidification device, the device mainly comprise inlet tube, outlet pipe, water-locator, fluidized bed, three-phase separator, mud pipe, inner circulating pipe, internal circulating pump, the elevator pump that intakes, water knockout drum, sample connection, catch water and blast pipe. The multi-stage hydrolysis acidification device is mainly characterized in that wastewater enters a reactor through a water distributor through a water inlet pipe, passes through a hydrolysis acidification section consisting of 2-3 stages of fluidized beds and a three-phase separator, is discharged from a water outlet pipe, and is discharged by a sludge discharge pipe arranged at the bottom of the device. Compared with the prior art, the utility model discloses the advantage includes: the control of the reaction condition is very flexible, and the requirement on the water temperature is not high particularly; the biomass is high, and the design of the height-diameter ratio strengthens the treatment effect.

Description

Tower type multistage hydrolysis acidification device

Technical Field

The utility model relates to a tower multistage hydrolysis-acidification device.

Background

The hydrolysis treatment method is a method between the aerobic treatment method and the anaerobic treatment method, and can reduce the treatment cost and improve the treatment efficiency by combining other processes. Hydrolysis refers to the biochemical reaction that occurs extracellularly before the organic material enters the microbial cells. The hydrolysis (acidification) treatment process is the early stage of anaerobic treatment. According to the difference of growth conditions of methanogenic bacteria and hydrolytic acid-producing bacteria, anaerobic treatment is controlled to be under the condition of containing a large amount of hydrolytic bacteria and acidic bacteria, the hydrolytic bacteria and the acidic bacteria are utilized to hydrolyze insoluble organic matters in water into soluble organic matters, and macromolecular substances which are difficult to biodegrade are converted into micromolecular substances which are easy to biodegrade, so that the biodegradability of wastewater is improved, and a good water quality environment is provided for subsequent biochemical treatment. By controlling the anaerobic digestion reaction only in the hydrolysis and acidification processes, no or little methane is produced, and no granular sludge is generated, so that the biochemical property of the sewage is improved, and the subsequent treatment cost is reduced.

Compared with a tower reactor, the tower reactor has the defects of large occupied area, high investment cost, low activated sludge concentration caused by the fact that granular sludge cannot be generated, poor settleability and difficult biogas collection.

Disclosure of Invention

The utility model aims at providing a tower type multistage hydrolysis acidification device for overcoming the defects of the prior art.

The purpose of the utility model can be realized through the following technical scheme:

a tower type multistage hydrolysis acidification device comprises a water inlet pipe 1, a water outlet pipe 2, a water distributor 3, a plurality of hydrolysis acidification layers, a sludge discharge pipe 6, a water distributor 10, a steam-water separator 12 and a reactor barrel 14, wherein each hydrolysis acidification layer consists of a fluidized bed 4 and a three-phase separator 5 from bottom to top, the plurality of hydrolysis acidification layers are stacked in the reactor barrel 14 from top to bottom, the water inlet pipe 1 is arranged on one side of the bottom of the reactor barrel 14, the sludge discharge pipe 6 is arranged on the other side of the bottom of the reactor barrel 14, the water inlet pipe 1 is connected with the water distributor 10 through a pipeline, the water distributor 10 is connected with the water distributor 3, and the water distributor 3 is positioned below the plurality of hydrolysis acidification layers; a water outlet pipe 2 is arranged on one side of the top of a reactor barrel 14, a steam-water separator 12 is arranged above the reactor barrel 14, a gas exhaust pipe 13 is connected with the top of the steam-water separator 12, a water outlet of the steam-water separator 12 is respectively inserted into the three-phase separator 5 of each water acidification layer, wastewater enters the reactor barrel 14 from the water distributor 3 through a water inlet pipe 1, passes through a plurality of hydrolysis acidification layers, and is discharged from the water outlet pipe 2.

In the utility model, the hydrolysis acidification layer is 2 to 3 layers.

In the utility model, the fluidized bed 4 is composed of biological filler and hydrolytic acidification microbes attached to the surface of the biological filler.

The utility model discloses in, 14 one side evenly distributed of reactor barrel has a plurality of sample connection 11.

In the utility model discloses, water knockout drum 10 one end is connected with 7 one ends of inner circulating pipe, and the inner circulating pipe other end passes through 8 connection circulating water pipelines of inner circulating pump.

The working principle of the utility model is as follows:

the wastewater enters the reactor through the water distributor 3 via the water inlet pipe 1, passes through the hydrolysis acidification section consisting of the 2-3 stage fluidized bed 4 and the three-phase separator 5, is discharged from the water outlet pipe 2, and is discharged through the sludge discharge pipe 6 at the bottom. The microorganism fixed on the fluidized bed filler can ensure that the reaction is carried out to the first three stages and a small amount of methane is generated, the microorganism concentration is ensured by the high-density filler, and the condition that the discharged water carries mud is prevented by the compact arrangement form. Therefore, the persistent symptoms that the concentration of the outlet water slime microorganisms is difficult to ensure due to the fact that the water temperature is too low and the solubility of the methane and the carbon dioxide in the water is increased are avoided to the maximum extent.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1 the control of the reaction conditions is very flexible, and particularly the requirement on the water temperature is not high. This is because, under the condition of low water temperature, the microorganism fixed on the filler can ensure the reaction to proceed to the first three stages and the generation of a small amount of methane, the microorganism concentration is ensured by the high-density filler, and the compact arrangement form prevents the condition that the discharged water carries mud. The persistent ailment that the concentration of the microorganisms on the outlet water is difficult to ensure due to the low water temperature and the high solubility of the methane and the carbon dioxide in the water is avoided to the maximum extent. Many engineering application examples show that under the condition that the water temperature is 10-15 ℃, the COD removal rate of the reactor is still kept at about 60-70%, and under the condition that the water temperature is higher than 30 ℃, the reactor can also carry out complete methanation reaction, and the COD removal rate can reach about 85-95%.

2 the flexible and mobile internal circulation system can lead anaerobic reaction to complete self-dilution, and furthest avoid the inhibiting effect of substances such as ethanol and the like on microorganisms. And the water distribution function is enhanced, and the maximum contact between water and the filler is ensured.

3, the high-density fluidized bed filler ensures enough biomass needed by the system, and the sludge discharge system at the bottom prevents the blockage phenomenon of the filler.

4 the design of height-diameter ratio is very flexible, and higher height-diameter ratio guarantees certain rising velocity of flow, has guaranteed the intensive mixing and the mixture of mud and waste water simultaneously, has improved anaerobic treatment efficiency.

Drawings

FIG. 1 is a schematic structural view of a tower-type multistage hydrolysis acidification device of the present invention;

FIG. 2 is a schematic structural view of the water separator;

reference numbers in the figures: the device comprises a water inlet pipe 1, a water outlet pipe 2, a water distributor 3, a fluidized bed 4, a three-phase separator 5, a sludge discharge pipe 6, an internal circulation pipe 7, an internal circulation pump 8, a water inlet lift pump 9, a water distributor 10, a sampling port 11, a steam-water separator 12, an exhaust pipe 13 and a reactor barrel 14.

Detailed Description

Example 1 treatment of high-concentration refractory organic chemical wastewater

As shown in fig. 1 and 2, the device is composed of a water inlet pipe 1, a water outlet pipe 2, a water distributor 3, a fluidized bed 4, a three-phase separator 5, a sludge discharge pipe 6, an internal circulation pipe 7, an internal circulation pump 8, a water inlet lift pump 9, a water separator 10, a sampling port 11, a steam-water separator 12, an exhaust pipe 13 and a reactor barrel 14, wherein: fluidized bed 4 and three-phase separator 5 constitute the hydrolysis acidification layer, 2 layers of hydrolysis acidification layer top-down arranges in reactor barrel 14, inlet tube 1 arranges in one side of reactor barrel 14 bottom, sludge discharge pipe 6 arranges in the opposite side of reactor barrel 14 bottom, outlet pipe 2 arranges in one side of reactor barrel 14 top, inlet tube 1 one end is connected into water elevator pump 9, the other end is connected with water knockout drum 10, water knockout drum 10 is connected with water knockout drum 3, water knockout drum 3 is located the hydrolysis acidification layer below, catch drum 12 sets up in reactor barrel 14 upper portion, catch drum 12 top is connected with blast pipe 13, the drain pipe of catch drum 12 inserts respectively in three-phase separator 5, water knockout drum 10 passes through pipe connection inner circulation pipe 7 one end, the inner circulation pipe 7 other end passes through inner circulation pump 8 and connects the circulating water pipeline. The sampling ports 11 are uniformly arranged on one side of the reactor cylinder 14.

Utilize this utility model's tower multistage hydrolytic acidification processing apparatus to handle high concentration difficult degradation organic chemical industry waste water, the initial COD scope of waste water is 10000~15000 mg/L, and waste water enters into the reactor bottom by water-locator 3 through inlet tube 1, takes place hydrolytic acidification through the inside fluidized bed 4 layers of device respectively and reacts, gets rid of the methane gas that produces by three-phase separator 5, and fluidized bed and three-phase separator are constituteed by 2 grades, and the play water of waste water is discharged by outlet pipe 2. The sludge discharge is completed by a sludge discharge pipe 6 at the bottom. The COD of the treated wastewater is 3000-4000 mg/L, the control of reaction conditions is very flexible, the biomass is high, the requirement on the water temperature is particularly low, and the high-diameter ratio design strengthens the treatment effect.

Claims (5)

1. The utility model provides a tower multistage hydrolysis acidification device, includes inlet tube (1), outlet pipe (2), water-locator (3), a plurality of layers hydrolysis acidification layer, mud pipe (6), water knockout drum (10), catch water (12) and reactor barrel (14), its characterized in that: each hydrolysis acidification layer consists of a fluidized bed (4) and a three-phase separator (5) from bottom to top, a plurality of hydrolysis acidification layers are arranged in a reactor barrel (14) in an overlying manner from top to bottom, one side of the bottom of the reactor barrel (14) is provided with a water inlet pipe (1), the other side of the bottom of the reactor barrel is provided with a sludge discharge pipe (6), the water inlet pipe (1) is connected with a water distributor (10) through a pipeline, the water distributor (10) is connected with a water distributor (3), and the water distributor (3) is positioned below the plurality of hydrolysis acidification layers; one side of the top of the reactor barrel (14) is provided with a water outlet pipe (2), a steam-water separator (12) is arranged above the reactor barrel (14), the top of the steam-water separator (12) is connected with a gas exhaust pipe (13), a water outlet of the steam-water separator (12) is respectively inserted into a three-phase separator (5) of each water acidification layer, wastewater enters the reactor barrel (14) from a water distributor (3) through a water inlet pipe (1), passes through a plurality of hydrolysis acidification layers, and is discharged from the water outlet pipe (2).

2. The tower-type multistage hydrolysis acidification device according to claim 1, characterized in that: the hydrolysis acidification layer is 2 to 3 layers.

3. The tower-type multistage hydrolysis acidification device according to claim 1, characterized in that: the fluidized bed (4) is composed of biological filler and hydrolytic acidification microorganisms attached to the surface of the biological filler.

4. The tower-type multistage hydrolysis acidification device according to claim 1, characterized in that: a plurality of sampling ports (11) are uniformly distributed on one side of the reactor cylinder (14).

5. The tower-type multistage hydrolysis acidification device according to claim 1, characterized in that: one end of the water separator (10) is connected with one end of an internal circulation pipe (7), and the other end of the internal circulation pipe is connected with a circulation water pipeline through an internal circulation pump (8).

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