CN211056791U

CN211056791U - Novel high-efficient sewage nitrogen and phosphorus removal biochemical reaction treater

Info

Publication number: CN211056791U
Application number: CN201921733677.0U
Authority: CN
Inventors: 周易
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-07-21
Anticipated expiration: 2029-10-15

Abstract

The utility model relates to a novel high-efficiency biochemical reaction processor for nitrogen and phosphorus removal of sewage, which comprises a biochemical reaction tank and a sedimentation clarification tank from left to right in sequence, wherein the biochemical reaction tank is filled with suspended filler, the bottom of the biochemical reaction tank is provided with an aeration device, the biochemical reaction tank is also provided with a stirring device, the right bottom of the biochemical reaction tank is provided with a stainless steel screen, the sewage treated by the biochemical reaction tank flows upwards from bottom to top through the stainless steel screen under the pushing action of water flow, and flows upwards through a left side baffle of the sedimentation clarification tank and then enters the sedimentation clarification tank, then the water flows upwards through a baffle at the left lower part of an inclined tube sedimentation zone and enters a suspended filter layer in the sedimentation clarification tank, then continues to flow upwards, enters the inclined tube sedimentation zone, the water treated by the inclined tube sedimentation zone flows upwards and enters a rectification zone, and then enters a clarification water collecting tank, then the sludge is discharged after being collected by a clarification water collecting tank, and the sludge is refluxed by adopting a reflux pump to lift and reflux or by adopting a mode of installing a water ejector on a water inlet pipe to suck and reflux under negative pressure.

Description

Novel high-efficient sewage nitrogen and phosphorus removal biochemical reaction treater

Technical Field

The utility model relates to a sewage treatment device, in particular to a novel high-efficiency biochemical reaction processor for sewage denitrification and dephosphorization.

Background

Since the country releases 'action plan for preventing and treating water pollution' (ten items of water for short), the water environment quality in China keeps continuously improving, but the situation of preventing and treating water pollution in China is still severe, and the water pollution prevention and treatment method has some outstanding problems in the aspects of infrastructure construction of urban and rural environments, control of nitrogen, phosphorus and other nutrient substances, watershed water ecological protection and the like, and needs to be accelerated to be solved. In recent years, the water pollutant discharge standard of national and local sewage treatment facilities is continuously improved, but the nitrogen and phosphorus removal effect of the existing sewage treatment device is not ideal, and the operation cost is higher. In order to solve the technical problems, a novel high-efficiency biochemical reaction processor for nitrogen and phosphorus removal of sewage is invented.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a novel high-efficient sewage nitrogen and phosphorus removal biochemical reaction treater, this treater biochemical reaction pond and two heavy pond integration in an organic whole, be equipped with aeration equipment, agitating unit, biofilm carrier simultaneously in equipment, deposit clarification device.

The specific technical scheme is as follows:

a novel high-efficiency biochemical reaction processor for nitrogen and phosphorus removal of sewage comprises a biochemical reaction tank and a sedimentation clarification tank from left to right in sequence, wherein the biochemical reaction tank is filled with suspended filler, the bottom of the biochemical reaction tank is provided with an aeration device, the biochemical reaction tank is also provided with a stirring device, the bottom of the right side of the biochemical reaction tank is provided with a stainless steel screen, the sewage treated by the biochemical reaction tank flows from bottom to top through the stainless steel screen under the action of water flow promotion, flows from top to bottom through a left side clapboard of the sedimentation clarification tank and then flows into the sedimentation clarification tank, then flows upwards through a clapboard at the left lower part of an inclined tube sedimentation zone and enters a suspended filter layer in the sedimentation clarification tank, then flows upwards and enters the inclined tube sedimentation zone, the water treated by the inclined tube sedimentation zone flows upwards and enters a rectification zone, then enters a clarification water collecting tank and then is discharged through a clarification water collecting tank, and the sludge is lifted and refluxed to the front end of the biochemical tank by a reflux pump.

A novel high-efficiency biochemical reaction processor for nitrogen and phosphorus removal of sewage is characterized in that a sedimentation and clarification tank is arranged in the middle area of the processor, an annular biochemical reaction tank is arranged outside the sedimentation and clarification tank, raw sewage enters the bottom of the biochemical reaction tank after being mixed with return sludge through a water injector, an aeration device and a stirring device are arranged at the bottom of the biochemical reaction tank, stainless steel partition nets are arranged on two sides of the top of the inner side of the biochemical reaction tank, the sewage treated by the biochemical reaction tank enters the sedimentation and clarification tank through the stainless steel partition nets, a flow guide pipe is arranged in the middle of the sedimentation and clarification tank, an annular inclined tube sedimentation area is arranged outside the flow guide pipe, water flow entering the sedimentation and clarification tank flows from top to bottom under the action of the flow guide pipe, flows out through an outlet below the flow guide pipe, then flows upwards to enter the inclined tube sedimentation area for mud-water separation, and the sewage treated by the inclined, then the sewage is discharged through a drain pipe on the clarification water collecting tank, and the sludge reflows to the front end of the biochemical pool in a negative pressure suction reflowing mode of installing a water ejector on a water inlet pipe.

Further, the processor also comprises a carbon source adding device, and the carbon source adding device comprises a dosing pump and a carbon source liquid medicine box.

Furthermore, the tank type of the novel high-efficiency sewage denitrification and dephosphorization biochemical reaction processor is rectangular or circular.

The utility model has the advantages of: the biochemical treatment process is simple, the operation cost is low, the solid-liquid separation effect is good, the nitrogen and phosphorus removal effect is good, the impact load is resisted, and the sludge bulking can be effectively prevented.

Drawings

Fig. 1 and 2 are schematic structural diagrams of the novel high-efficiency biochemical reaction processor for nitrogen and phosphorus removal from sewage.

Reference numerals:

201. the device comprises a first water inlet pipe 202, a first suspended filler 203, a first aerator 204, a first stirrer 205, a first stainless steel screen, a first 206, a suspended filter layer 207, a first inclined tube settling zone 208, a first clarifying water collecting tank 209, a return sludge pump 210, a sludge return pipeline 211, a sludge discharge pipeline 212, a first water outlet pipe 213, a first carbon source liquid medicine tank 214, a first carbon source feeding pump 215, a second water inlet pipe 216, a water injector 217, an aerator pipe 218, a second stirrer 219, a second stainless steel screen 220, a flow guide pipe 221, a second inclined tube settling tank 222, a second clarifying water collecting tank 223, a return sludge pipe 224, a sludge discharge pipe 225, a second water outlet pipe 226, a second aerator 227, a second carbon source liquid medicine tank 228, a second carbon source feeding pump 229 and a second suspended seasoning.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described with reference to fig. 1-2.

A novel high-efficiency biochemical reaction processor for removing nitrogen and phosphorus from sewage is a novel complete mixed biochemical reaction tank, integrates an aeration tank and a secondary sedimentation tank into a whole, and is provided with an aeration device, a stirring device, a biological filler and a sedimentation clarification device in the integrated reaction tank. The sewage is subjected to aerobic and anoxic reactions in a biochemical reaction tank under the action of microorganisms to reduce biochemical indexes such as COD, ammonia nitrogen, total phosphorus and the like, solid-liquid separation is realized through a sedimentation and clarification device, the separated activated sludge directly returns to the reaction tank again for further reaction, part of residual sludge is periodically discharged to a sludge tank, and the effluent water passing through the sedimentation and clarification device is discharged outwards. The aeration device can be a submersible aerator or a blower for aeration.

The aeration device and the diving stirring device in the biochemical reaction tank alternately work discontinuously, and the diving stirring device is started to mix and stir the whole biochemical reaction tank when the aeration is stopped. Through discontinuous aeration, different living environments with anaerobic, anoxic and aerobic alternation can be created for microorganisms in a biochemical tank, so that aerobic bacteria, anaerobic bacteria and facultative bacteria can be well proliferated, full nitrification and excessive uptake of phosphorus under the aerobic condition are facilitated, full denitrification is realized under the anoxic condition, the release of phosphorus is realized under the anaerobic condition, and nitrogen and phosphorus can be effectively removed.

Simultaneously put into the novel suspension of a certain amount in the biochemical reaction pond and pack as the carrier, the suspension packs the material and is polyethylene, single specific surface area: 500-800m²/m³(ii) a Individual dimensions: the suspended filler 202 is attached with a biological film at a height of 12mm to 25mm (height: diameter), which can improve the biomass and the biological species in the biochemical reaction tank, thereby improving the treatment efficiency of the biochemical reaction tank. Because the density of the filler is close to that of water, the filler is completely mixed with the water during aerationThe environment of microorganism growth is three phases of gas, liquid and solid. The collision and shearing action of the carrier in water makes air bubbles finer, and the utilization rate of oxygen is increased. In addition, each carrier has different biological species inside and outside, anaerobic bacteria or facultative bacteria grow inside, aerobic bacteria grow outside, and thus each carrier is a micro biochemical reaction tank, so that nitrification reaction and denitrification reaction exist simultaneously, and the treatment effect is improved.

And the sewage treated by the biochemical reaction tank enters a sedimentation tank at the rear part of the equipment for sludge-water separation. The sewage enters a compact suspended filter layer area formed by sludge self through a diversion area for filtering, then escaped small flocs enter an upper inclined tube settling area along with the effluent for sludge-water separation, and the purified effluent enters a subsequent facility for advanced treatment after being collected by a clarifying tank. The sludge deposited at the bottom of the device is sent to the water inlet end of the biochemical reaction tank through a return sludge pump (or a water ejector), so that the whole biochemical reaction tank is maintained at a higher sludge concentration, and the sewage treatment effect is improved. When the sludge concentration in the biochemical reaction tank is too high, the redundant excess sludge can be discharged out periodically through the bypass valve.

FIG. 1 is a schematic diagram of an embodiment 1 of a novel high-efficiency biochemical reactor 2 for removing nitrogen and phosphorus from left to right, which comprises a biochemical reaction tank and a settling tank in sequence, wherein the biochemical reaction tank is filled with suspended filler 202, the bottom of the biochemical reaction tank is provided with an aeration device 203, the aeration device 203 performs oxygenation and aeration on the sewage in the biochemical reaction tank, the biochemical reaction tank is further provided with a stirring device 204, the stirring device 204 stirs the sewage in the biochemical reaction tank, the bottom of the right side of the biochemical reaction tank is provided with a stainless steel screen 205, the sewage treated by the biochemical reaction tank flows from bottom to top through the stainless steel screen 205 under the water flow pushing action, flows from top to bottom through a left side screen of the settling tank and enters the settling tank, and then flows upwards through a screen below an inclined tube settling zone 207 and enters a suspended filter layer 206 in the settling tank, then continuously flows upwards to enter the inclined tube settling zone 207, and the water treated by the inclined tube settling zone 207 flows upwards to enter the rectifying zone, then enters the clarifying water collecting tank 208 and is discharged through the clarifying water collecting tank 208. The sludge is lifted by a reflux pump 209 and flows back to the front end of the biochemical tank.

FIG. 2 is an embodiment 2 of the novel high-efficiency biochemical reaction processor for removing nitrogen and phosphorus from sewage, as can be seen from FIG. 2, the middle region of the novel high-efficiency biochemical reaction processor for removing nitrogen and phosphorus from sewage is a settling pond, an annular biochemical reaction tank is arranged outside the settling pond, raw sewage enters the bottom of the biochemical reaction tank through a water injector 216, an aeration device is arranged at the bottom of the biochemical reaction tank, the aeration device performs oxygen aeration on sewage in the biochemical reaction tank, suspended fillers 229 are filled in the biochemical reaction tank, a stirring device 218 is arranged at the bottom of the biochemical reaction tank, the stirring device 218 stirs the sewage in the biochemical reaction tank, stainless steel screens 219 are arranged on both sides of the top of the inner side of the biochemical reaction tank, the sewage after being treated by the biochemical reaction tank enters the settling pond through the stainless steel screens 219, a flow guide pipe 220 is arranged in the middle of the settling pond, an annular inclined pipe settling zone 221 is arranged outside the flow guide pipe 220, the water flow entering the sedimentation and clarification tank flows from top to bottom under the action of the draft tube 220, flows out through the outlet below the draft tube 220, then flows upwards to enter the inclined tube sedimentation area 221 for mud-water separation, and the sewage treated by the inclined tube sedimentation area 221 enters the sedimentation and water collection tank 222 and is discharged through the drain pipe on the sedimentation and water collection tank 222. The sludge reflows to the front end of the biochemical pool in a negative pressure suction reflowing mode through a water ejector 216 arranged on the water inlet pipe.

Furthermore, the novel efficient biochemical sewage denitrification and dephosphorization reaction processor also comprises a carbon source adding device, when the carbon source in the sewage raw water is insufficient, a carbon source liquid medicine in a carbon source liquid medicine tank is added into the biochemical reaction tank by a medicine adding pump, and the denitrification effect of the whole biochemical treatment system is ensured.

The specific tank type of the novel high-efficiency sewage denitrification and dephosphorization biochemical reaction processor can be rectangular or circular.

The novel high-efficiency sewage denitrification and dephosphorization biochemical reaction processor has the beneficial technical effects that: the biochemical treatment process is simple, the operation cost is low, the solid-liquid separation effect is good, the nitrogen and phosphorus removal effect is good, the impact load is resisted, and the sludge bulking can be effectively prevented.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel high-efficient sewage nitrogen and phosphorus removal biochemical reaction treater which characterized in that: the treater sequentially comprises a biochemical reaction tank and a sedimentation and clarification tank from left to right, wherein the biochemical reaction tank is filled with suspended filler, the bottom of the biochemical reaction tank is provided with an aeration device, the biochemical reaction tank is also provided with a stirring device, the bottom of the right side of the biochemical reaction tank is provided with a stainless steel separation net, sewage treated by the biochemical reaction tank flows from bottom to top through the stainless steel separation net under the pushing action of water flow, flows from top to bottom through a left side clapboard of the sedimentation and clarification tank and enters the sedimentation and clarification tank, then the water flows upwards through the baffle plate at the left lower part of the inclined tube sedimentation area and enters the suspension filter layer in the sedimentation clarification tank, then continuously upwards flows to enter an inclined tube settling zone, the water treated by the inclined tube settling zone upwards flows to enter a rectifying zone and then enters a clarifying water collecting tank, then the sludge is discharged after being collected by a clarification water collecting tank, and the sludge is lifted by a reflux pump to flow back to the front end of the biochemical reaction tank.

2. The utility model provides a novel high-efficient sewage nitrogen and phosphorus removal biochemical reaction treater which characterized in that: the middle area of the treater is a sedimentation clarification tank, an annular biochemical reaction tank is arranged outside the sedimentation clarification tank, sewage raw water enters the bottom of the biochemical reaction tank through a water ejector, an aeration device and a stirring device are arranged at the bottom of the biochemical reaction tank, stainless steel separation nets are arranged on two sides of the top of the inner side of the biochemical reaction tank, the sewage treated by the biochemical reaction tank enters the sedimentation clarification tank through the stainless steel separation nets, a flow guide pipe is arranged in the middle of the sedimentation clarification tank, an annular inclined pipe settling zone is arranged outside the flow guide pipe, water flow entering the sedimentation clarification tank flows from top to bottom under the action of the flow guide pipe and flows out through an outlet below the flow guide pipe, then flows upwards to enter an inclined tube sedimentation area for mud-water separation, the sewage treated by the inclined tube sedimentation area enters a clarification water collecting tank, then the sewage is discharged through a drain pipe on the clarification water collecting tank, and the sludge reflows to the front end of the biochemical reaction tank in a negative pressure suction reflowing mode of a water ejector arranged on a water inlet pipe.

3. The novel high-efficiency biochemical reactor for nitrogen and phosphorus removal from sewage as claimed in any one of claims 1-2, wherein: the processor also comprises a carbon source adding device, and the carbon source adding device comprises a dosing pump and a carbon source liquid medicine box.

4. The novel high-efficiency biochemical reactor for nitrogen and phosphorus removal from sewage as claimed in any one of claims 1-2, wherein: the novel high-efficiency sewage denitrification and dephosphorization biochemical reaction processor is rectangular or circular in shape.