CN211226536U

CN211226536U - Bioreactor

Info

Publication number: CN211226536U
Application number: CN201921874673.4U
Authority: CN
Inventors: 张周; 刘猛
Original assignee: Jiangsu Dapeng Environmental Protection Technology Co ltd
Current assignee: Jiangsu Dapeng Environmental Protection Technology Co ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-08-11
Anticipated expiration: 2029-11-04

Abstract

The utility model relates to a bioreactor, which comprises a reactor body, wherein four biochemical reaction tanks are arranged in the reactor body, every two of the four biochemical reaction tanks are connected through a filter frame and a water distribution pipe, a water inlet pipe is arranged on the side surface of the top of the first biochemical reaction tank, and an overflow weir is arranged on the upper part of the fourth biochemical reaction tank; each biochemical pool is internally provided with a bearing plate, and the bearing plate is provided with a strain carrier layer. The utility model has the advantages of simple structure and reasonable design, improve biochemical system and endure the upper limit to strong inhibitory nature factors such as salt, toxic substance, sulfate ion, formaldehyde, promote biochemical system at the stability and the degradation ability in chemical industry class waste water field, reduce mud production volume.

Description

Bioreactor

Technical Field

The utility model relates to a bioreactor, which is applied to anaerobic biological treatment technology of high-salt and high-toxicity organic wastewater.

Background

The chemical wastewater has complex pollutant components, high concentrations of organic matters, salt and the like, and obvious inhibition on a biochemical system, and the traditional anaerobic reactor is difficult to bear the impact of inhibitory and toxic substances, so that the system paralysis and the microbial death are easily caused, and the vicious circle of repeated debugging, failure and debugging and repeated mud feeding is involved; meanwhile, the sludge production is large, and a large amount of hazardous waste disposal cost is brought to enterprises.

The traditional activated sludge method and biofilm method have poor impact resistance to wastewater which is difficult to biochemically process and has complex components, high organic matter concentration, low B/C value, low toxicity and the like, the wastewater can not be started to run basically, the activated sludge is difficult to acclimate and mature, the sludge concentration is maintained, and sludge expansion is easy to generate after the system is inoculated with strains until the system is crashed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the defects of the prior art, the bioreactor is provided, the tolerance upper limit of a biochemical system to strong inhibition factors such as salt, toxic substances, sulfate ions, formaldehyde and the like is improved, the stability and the degradation capability of the biochemical system in the field of chemical wastewater are improved, the sludge production is reduced, the sludge concentration problem is solved, a more favorable microbial living environment is maintained, and the activity of bacteria clusters and the degradation effect of the system to pollutants are improved.

The utility model adopts the technical proposal that: a bioreactor comprises a reactor body, wherein four biochemical reaction tanks are arranged in the reactor body, every two of the four biochemical reaction tanks are connected through a filter frame and a water distribution pipe, a water inlet pipe is arranged on the side surface of the top of a first biochemical reaction tank, and an overflow weir is arranged on the upper part of a fourth biochemical reaction tank; each biochemical pool is internally provided with a bearing plate, and the bearing plate is provided with a strain carrier layer.

The utility model discloses in: the bottom of the biochemical reaction tank is provided with a sludge discharge pipe and an aeration pipe, the sludge discharge pipe is made of UPVC material and is used for discharging sludge periodically, and the sludge discharge mode adopts gravity sludge discharge; the aeration pipe is used for periodically back washing the carrier layer to prevent the carrier from being blocked to influence water flow and the living environment of strains.

The utility model discloses in: the strain carrier layer is an active carbon strain carrier layer, and the mesh number of the active carbon is 1-6 meshes.

The utility model discloses in: the bearing plate is made of a PP plate with the thickness of 20mm, and round holes with the diameter of 2mm are uniformly distributed on the surface of the bearing plate to serve as water flow channels.

After the technical scheme is adopted, the beneficial effects of the utility model are that: the utility model has the advantages of simple structure and reasonable design, improve biochemical system to the salt, the toxic substance, sulfate ion, strong inhibitory nature factor tolerance upper limit such as formaldehyde, promote biochemical system at the stability and the degradation ability of chemical industry class waste water field, reduce the mud production volume, form stable carrier layer on bearing board surface simultaneously, the carrier has huge specific surface area and enrichment effect, the adsorption to the microorganism is more than 300 times of activated sludge, promote the formation of microbial community through adsorption, promote activated sludge's cohesion performance and bacterial community activity, promote sludge concentration to reasonable level and stably keep fast, restrain the mud inflation simultaneously.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a support plate.

In the figure: 1. a support plate; 2. a biochemical reaction tank; 3. a filter frame; 4. a water inlet pipe; 5. a circular hole; 6. an overflow weir; 7. a strain carrier layer; 8. a sludge discharge pipe; 9. aeration pipe, 10 water distribution pipe.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-2, a bioreactor comprises a reactor body, wherein four biochemical reaction tanks 2 are arranged in the reactor body, every two biochemical reaction tanks 2 are connected through a filter frame 3 and a water distribution pipe 10, a water inlet pipe 4 is arranged on the side surface of the top of the first biochemical reaction tank 3, and an overflow weir 6 is arranged on the upper part of the fourth biochemical reaction tank 2; a bearing plate 1 is arranged in each biochemical pool 2, a strain carrier layer 7 is arranged on the bearing plate 1, the strain carrier layer 7 is an activated carbon strain carrier layer, and the mesh number of the activated carbon is 1-6 meshes; the bearing plate 1 is made of a PP plate with the thickness of 20mm, and round holes 5 with the diameter of 2mm are uniformly distributed on the surface of the bearing plate 1 and are used as water flow channels.

The bottom of the biochemical reaction tank 2 is provided with a sludge discharge pipe 8 and an aeration pipe 9, the sludge discharge pipe 8 is made of UPVC material and is used for discharging sludge at regular intervals, and the sludge discharge mode adopts gravity sludge discharge (sludge accumulation amount reaches the end, sludge at the bottom is pressed out through the sludge discharge pipe by self weight, and can also be pumped out through a sludge pump); the aeration pipe 9 is used for periodically back washing the carrier layer to prevent the carrier from being blocked to influence water flow and the living environment of strains.

During the concrete implementation, first check biochemical reaction pond 2 is intake from top side inlet tube 4, leads the pond bottom uniform water distribution with the pipeline, overflows through filter frame 3 and gets into water distributor to next check biochemical reaction pond 2 after strain carrier layer 7 and the abundant contact degradation of strain, wholly is the plug flow state, is the upflow state in every check, and waste water is after the biological degradation in four check biochemical reaction ponds 2, collects the discharge from overflow weir 6 of the biochemical reaction pond 2 of fourth check. Adding strain carrier into the four-grid biochemical reaction tank 2, wherein the carrier is 1-6 mesh strain special carrier activated carbon, and the adding amount is 0.05 ton/m³(ii) a And adding DPTB high-efficiency composite strain into the biochemical reaction tank 2, wherein the adding amount is 0.2KG/m³。

The strain carrier has strong adsorption capacity and specific surface area, and is inoculated with efficient DPTB composite microbial strains. A large amount of microorganisms can be adsorbed on the surface of the carrier, so that the effect of a fixed bed is achieved, and the living environment of the microorganisms is greatly improved; meanwhile, the method is more favorable for the sufficient contact of microorganisms and pollutants, improves the conversion efficiency and finally forms biological cenobium. Domesticating and culturing. The biochemical pool forms microbial environment and microecological balance mainly comprising hydrolytic acidification flora and alkali producing bacillus flora. The wastewater is contacted with strains growing on a carrier in a DPABR biochemical pool, macromolecular insoluble organic matters in the wastewater are firstly hydrolyzed into micromolecular soluble organic matters by hydrolytic bacteria, then the micromolecular soluble organic matters are acidified into lower fatty acids such as acetic acid by acidification bacteria, and then the lower fatty acids are converted into stable inorganic substances by the alcaligenes by taking H & lt + & gt in the wastewater as an electron acceptor, so that the hydrolytic acidification of organic pollutants is realized. The system has strong adaptability to chemical wastewater difficult to be biochemically treated, and can improve the tolerance limit value of inhibitory factors such as salt, toxic substances and the like to several times to several hundred times.

The DPABR biochemical pool is divided into 4 biochemical reaction pools, each biochemical reaction pool is of an upflow reaction type, namely, wastewater is distributed by a water distribution pipe at the bottom and then passes through a carrier layer in an upflow mode, the hydraulic characteristic is close to a complete mixing type, and the whole reactor is of a plug flow type. The wastewater flows into the reaction chambers and then flows upwards and downwards in a baffling way to sequentially pass through the carrier layer of each reaction chamber, and organic matters in the wastewater are removed by fully contacting with microorganisms. The whole system has excellent hydraulic conditions and provides a good environment for the survival of microorganisms and the degradation of pollutants.

The wastewater in the reaction chamber runs up and down under the flowing action of the wastewater, and due to the blocking action of the carrier layer and the self-sedimentation property of the sludge, the sludge generated in the treatment process is intercepted in the reaction chamber, the residual sludge yield of the whole system is only 10 percent of that of the traditional ABR, and the subsequent sludge treatment cost is greatly reduced.

The above description is directed to the specific embodiments of the present invention, but the present invention is not limited to the above description. Any equivalent modifications and substitutions to the present embodiments are within the scope of the present invention for those skilled in the art. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.

Claims

1. A bioreactor comprising a reactor body, characterized in that: the reactor body is internally provided with four biochemical reaction tanks, every two of the four biochemical reaction tanks are connected through a filter frame and a water distribution pipe, the side surface of the top of the first biochemical reaction tank is provided with a water inlet pipe, and the upper part of the fourth biochemical reaction tank is provided with an overflow weir; the biochemical reaction tank is internally provided with a bearing plate, and the bearing plate is provided with a strain carrier layer.

2. A bioreactor according to claim 1, wherein: the bottom of the biochemical reaction tank is provided with a sludge discharge pipe and an aeration pipe, the sludge discharge pipe is made of UPVC material and is used for discharging sludge periodically, and the sludge discharge mode adopts gravity sludge discharge; the aeration pipe is used for periodically back washing the carrier layer to prevent the carrier from being blocked to influence water flow and the living environment of strains.

3. A bioreactor according to claim 1 or 2, wherein: the strain carrier layer is an active carbon strain carrier layer, and the mesh number of the active carbon is 1-6 meshes.

4. A bioreactor according to claim 1, wherein: the bearing plate is made of a PP plate with the thickness of 20mm, and round holes with the diameter of 2mm are uniformly distributed on the surface of the bearing plate to serve as water flow channels.