CN210457645U

CN210457645U - Sequencing batch biochemical treatment equipment for leachate of domestic garbage at late stage

Info

Publication number: CN210457645U
Application number: CN201821804763.1U
Authority: CN
Inventors: 孙翼虎
Original assignee: Hunan Deeya Environment Engineering Co ltd
Current assignee: Hunan Diya Environmental Engineering Co ltd; Sun Yihu
Priority date: 2018-10-23
Filing date: 2018-10-23
Publication date: 2020-05-05
Anticipated expiration: 2028-10-23

Abstract

The utility model provides a biochemical treatment equipment of end domestic waste filtration liquid sequencing batch formula mainly utilizes the anoxic reactor and the aerobic reactor of order UNICOM to carry out biochemical treatment to domestic waste filtration liquid in the fractional cycle. The water inlet and drainage mode is that water is fed and drained once in each period, the processes before water inlet and drainage are a circulating treatment process and standing, and the wastewater continuously generates denitrification and nitrification in an anoxic and aerobic environment, so that ammonia nitrogen and total nitrogen are removed; microorganisms are mainly in a suspended state in the anoxic reactor and are fully mixed with the wastewater, and the aerobic reactor is attached to the combined biological filler to form a biological membrane, so that the tolerance capacity to the high-concentration wastewater can be improved, and after water enters, a wastewater stock solution is continuously mixed and diluted by the aerobic reactor after being treated, so that the ammonia nitrogen concentration of the whole system is reduced; the system can simultaneously feed and discharge water and aerate to continue the nitration reaction, thereby effectively prolonging the nitration reaction time.

Description

Sequencing batch biochemical treatment equipment for leachate of domestic garbage at late stage

One, the technical field

The utility model relates to a waste water treatment equipment in environmental engineering domestic waste filtration liquid treatment field specifically is a biochemical treatment equipment of later stage domestic waste filtration liquid sequencing batch formula.

Second, background Art

The total nitrogen (containing organic nitrogen, ammonia nitrogen, nitrate radical, nitrite radical and the like) content in the domestic garbage percolate is higher, wherein the content of the ammonia nitrogen accounts for the main part. The common biochemical treatment is difficult to achieve the treatment effect due to the overhigh ammonia nitrogen and low carbon-nitrogen ratio, so the pretreatment is particularly important. The pretreatment is carried out by physical (ammonia stripping) or chemical (struvite method) method before the conventional biochemical system, which can rapidly reduce ammonia nitrogen and total nitrogen, but has larger energy consumption. And if the conventional biochemical treatment of pretreatment such as A/O, A2/O is difficult to stably operate for a long time without increasing, the utility model provides a biochemical treatment equipment, can adapt to the high water inlet concentration impact of domestic waste leachate (especially late stage) well to can get rid of total nitrogen through program control.

Third, the invention

The utility model provides a technical scheme that its technical problem adopted is: the oxygen-deficient reactor formed by the steel cylindrical tank body or the square container with the steel-concrete structure and the stirring device with the upper opening is communicated with the aerobic reactor formed by the aeration pipeline in sequence.

A tank body or a container of the anoxic reactor is internally provided with a stirring device, and stirring blades extend to the bottom of the container; the water inlet pipe orifice and the aerobic reactor effluent backflow pipe orifice are arranged at the bottom of the container, and the overflow communicating pipe orifice is arranged at the upper part of the container; the drain pump inlet hose floats near the water surface.

The bottom of the aerobic reactor is distributed with overflow communicating branch pipes, and the orifice of the small hole is upward; aeration branch pipes are distributed above the overflow communicating branch pipes, and microporous aerators are arranged on the aeration branch pipes; a combined biological packing layer is hung in the middle reactor area of the container above the aeration branch pipe; the effluent of the aerobic reactor is arranged on the upper layer (higher than the packing layer) of the container, the other end of the effluent is connected with the inlet of a circulating pump, and the outlet of the circulating pump is connected with the bottom of the anoxic reactor; the bottom of the container is provided with an emptying valve.

The utility model discloses utilize aerobic reactor and anoxic reactor's microorganism to handle landfill leachate. The water inlet and drainage mode is that water is fed once and drained once in each period. The processes before the completion of water inflow and the drainage are a circular treatment process and standing, and the wastewater continuously generates denitrification and nitrification in an anoxic and aerobic environment, so that ammonia nitrogen and total nitrogen are removed. The microorganism is mainly in a suspended state in the anoxic reactor and is fully mixed with the wastewater; the aerobic reactor is attached to the combined biological filler to form a biological membrane, so that the tolerance capacity to high-concentration wastewater can be improved; the wastewater stock solution after water inflow is treated by an aerobic reactor to be continuously mixed and diluted with the wastewater with low ammonia nitrogen concentration, so that the ammonia nitrogen concentration of the whole system is reduced; the system can simultaneously feed and discharge water and aerate to continue the nitration reaction, thereby effectively prolonging the nitration reaction time.

Description of the drawings

The invention will be further described with reference to the accompanying drawings and specific embodiments:

FIG. 1 is a schematic sectional view of an anoxic reactor;

FIG. 2 is a schematic cross-sectional view of an aerobic reactor;

FIG. 3 is a schematic top view of an anoxic reactor-aerobic reactor connecting tube;

fig. 4 is a schematic top view of an aeration loop.

The notation in the figure is: 1, a water inlet pipe; 2, an inner cavity of the anoxic reactor; 3, a stirrer; 4, a carbon source feeding pipe; 5, a pH regulator feeding pipe; 6 circulating pump; 7, an inner cavity of the aerobic reactor; 8, discharging water from the aerobic reactor; 9 an effluent return pipe of the aerobic reactor; 10, overflowing the communicating pipe; 11 an aeration main pipe; 12 aeration branch pipes; 13 a microporous aerator; 14 a combined biological filler layer; 15 draining pump; 16 drain pump inlet hose; 17 a buoy; an 18-orifice filter head; 19 drainage pump outlet pipe; 20, adding a defoaming agent into a tube; 21 the anoxic reactor-aerobic reactor is connected with the main pipe; 22 a anoxic reactor-aerobic reactor connecting branch pipe; 23 small holes; 24 plug; 25 emptying valve of the aerobic reactor.

Fifth, detailed description of the invention

The utility model discloses it mainly divide into four stages to handle every cycle of domestic waste filtration liquid:

a water inlet stage: referring to fig. 1-2, wastewater enters an inner cavity of the anoxic reactor 2 from a water inlet pipe 1, and the inner cavity of the aerobic reactor 7 before water inlet is the wastewater which is retained in the previous period and has low ammonia nitrogen concentration after full reaction, and the wastewater can be used for diluting the inlet water. The water level of the inlet water exceeds 10 parts of the connecting pipe orifice of the anoxic reactor and the aerobic reactor, and the water level in the aerobic reactor 7 is flush with the connecting pipe orifice of the anoxic reactor and the aerobic reactor when the water inlet is finished.

A circulating reaction stage: starting a 3-stirrer, quantitatively adding a carbon source and a pH regulator into the 2-anoxic reactor wastewater from a 4-carbon-source adding pipe and a 5-pH-regulator adding pipe, and controlling the carbon source concentration and the pH of the pH wastewater within a certain range. Water at the upper part of the aerobic reactor 7 is sucked out through an aerobic reactor water outlet pipe 8 by a 6 circulating pump, then flows back to the bottom of the inner cavity of the anoxic reactor 2 by an aerobic reactor water outlet return pipe 9, and the circulating water quantity is controlled by adjusting the frequency of the circulating pump. 2, the wastewater in the inner cavity of the anoxic reactor flows into the inner cavity of the aerobic reactor 7 from the upper 10 anoxic reactor-aerobic reactor connecting pipe orifice.

Referring to fig. 3, the wastewater enters a main connecting pipe 21 of the anoxic reactor and the aerobic reactor from the upper part of the inner cavity of the anoxic reactor 2, then flows into a branch connecting pipe 22 of the anoxic reactor and the aerobic reactor, and flows into the bottom of the inner cavity of the aerobic reactor 7 from small holes 23 on the branch.

Referring to fig. 3-4, a 12 aeration branch pipe is arranged above a 22 anoxic reactor-aerobic reactor connecting branch pipe, air enters a 13 microporous aerator on the 12 aeration branch pipe from a 11 aeration main pipe through a blast aerator, is dispersed into micro bubbles in the aerator, enters an inner cavity of a 7 aerobic reactor, and oxygen is supplied to water.

The wastewater flows from bottom to top in the inner cavity of the aerobic reactor 7 to generate aerobic reaction, flows through the combined biological packing layer 14, and mainly generates biochemical actions such as nitrification and the like in the packing layer to convert ammonia nitrogen into nitrite or nitrate; the wastewater after nitrification flows back to the inner cavity of the anoxic reactor 2 from the upper part of the inner cavity of the aerobic reactor 7, and denitrification occurs in an anoxic environment to remove total nitrogen.

A standing stage: and after the cyclic reaction, entering a standing stage. 3 the stirrer and 6 the circulation pump are switched off. In the stage 7, the inner cavity of the aerobic reactor can still be aerated, the ammonia nitrogen and BOD of the aerobic reactor are continuously reduced, and the influent water in the next period is diluted.

A drainage stage: after the suspended sludge in the inner cavity of the anoxic reactor 2 is fully precipitated, a 15-draining pump is used for pumping the supernatant out of the inner cavity of the anoxic reactor 2 through a 16-draining pump inlet hose and flows to a subsequent treatment facility through a 19-draining pump outlet pipe, wherein the pipe orifice of the 16-draining pump inlet hose is tied on a 17-buoy, a filter head at the pipe orifice of a pipe 18 vertically extends downwards into the wastewater, and the wastewater is discharged after being filtered on the filter head. 7, adding the defoaming agent into the inner cavity of the aerobic reactor through a 20 defoaming agent adding pipe in the aeration process if foam is generated. When the operation is failed, the container is emptied by the emptying pipe of the 21 aerobic reactor.

Through the treatment in four stages, the waste water discharges out the device after reaching certain treatment degree. Pollutants such as ammonia nitrogen, total nitrogen and the like in the discharged wastewater can be effectively reduced and controlled, and the pressure of subsequent treatment is reduced.

Claims

1. The utility model provides a sequencing batch biochemical treatment equipment of leachate of domestic waste of late stage, characterized by: the oxygen-deficient reactor formed by the steel cylindrical tank body or the square container with the steel-concrete structure and the stirring device with the upper opening is communicated with the aerobic reactor formed by the aeration pipeline in sequence.

2. The sequencing batch biochemical treatment device for the leachate of the late-stage domestic garbage as claimed in claim 1, wherein: a tank body or a container of the anoxic reactor is internally provided with a stirring device, and stirring blades extend to the bottom of the container; the water inlet pipe orifice and the aerobic reactor effluent backflow pipe orifice are arranged at the bottom of the container, and the overflow communicating pipe orifice is arranged at the upper part of the container; the drain pump inlet hose floats near the water surface.

3. The sequencing batch biochemical treatment device for the leachate of the late-stage domestic garbage as claimed in claim 1, wherein: the bottom of the aerobic reactor is distributed with overflow communicating branch pipes, and the orifice of the small hole is upward; aeration branch pipes are distributed above the overflow communicating branch pipes, and microporous aerators are arranged on the aeration branch pipes; a combined biological packing layer is hung in the middle reactor area of the container above the aeration branch pipe; the effluent of the aerobic reactor is arranged on the upper layer of the container, the other end of the effluent is connected with the inlet of the circulating pump, and the outlet of the circulating pump is connected with the bottom of the anoxic reactor; the bottom of the container is provided with an emptying valve.