CN211770813U

CN211770813U - HFST nitrifies tower system

Info

Publication number: CN211770813U
Application number: CN201922205343.2U
Authority: CN
Inventors: 王卫华; 徐勤业; 姜海生; 孟江; 李俊涛; 田庆海; 汪春华
Original assignee: Jiangsu Changlong Chemicals Co ltd
Current assignee: Jiangsu Changlong Chemicals Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-10-27
Anticipated expiration: 2029-12-11

Abstract

The utility model relates to a HFST nitration tower system, wherein a sealed tower body is divided into a lower water inlet cavity and a middle reaction cavity by an upper clapboard and a lower clapboard, the upper sedimentation cavity is externally connected with a water inlet pipe and an air inlet pipe, the air inlet pipe is connected with an aeration pipe in the lower water inlet cavity, the lower water inlet cavity and the middle reaction cavity are communicated through holes uniformly distributed on the lower partition plate, PVDC lace high-load biological rope packing is arranged in the middle reaction cavity, a lifting hole is arranged in the middle of the upper partition plate, an overflow ring plate surrounding the periphery of the lifting hole is arranged in the upper sedimentation cavity, the side wall of the upper part of the upper sedimentation cavity is connected with a clear water discharge pipe and a return water pipe, the return water pipe is connected with the lower water inlet cavity through a return valve, the bottom of the upper sedimentation cavity is externally connected with a sludge pipe with a sludge pump, the sludge pipe is connected with a sludge buffer tank, the bottom of the sludge buffer tank is externally connected with two paths through the sludge return pump, one path is connected with the. The device has the advantages of simple and compact structure, high-efficiency nitrification, inspection-free, maintenance-free, high biological load and long service life.

Description

HFST nitrifies tower system

Technical Field

The utility model relates to a chemical industry equipment, a HFST nitrifies tower system specifically says so.

Background

In water treatment processes such as industrial sewage, municipal sewage, food wastewater, chemical wastewater and landfill leachate, nitrogen-containing wastewater is treated by a conventional nitrification and denitrification process, and COD, BOD, ammonia nitrogen, total nitrogen and total phosphorus in the wastewater are removed by sludge nitrifying bacteria and aerobic bacteria. The existing nitrification equipment adopts the method that all the nitrified liquid is discharged after being quantitatively stored, the requirement of on-line continuous treatment cannot be met, and the wastewater treatment capacity is greatly influenced.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model provides a simple structure, compactness, high-efficient nitrify, exempt from to examine, non-maintaining, biological load is high, long service life's HFST nitrifies tower system.

The utility model adopts the technical proposal that: a HFST nitration column system, characterized by: comprises a sealed tower body, the sealed tower body is divided into a lower water inlet cavity, a middle reaction cavity and an upper precipitation cavity by an upper clapboard and a lower clapboard, the lower water inlet cavity is externally connected with a water inlet pipe and an air inlet pipe, the air inlet pipe is connected with an aeration pipe arranged in the lower water inlet cavity, the lower water inlet cavity and the middle reaction cavity are communicated by through holes uniformly distributed on the lower clapboard, a PVDC lace high-load biological rope packing is arranged in the middle reaction cavity, go up the baffle middle part and be equipped with the hole that rises, go up and establish an overflow ring board of enclosing the dress in the hole periphery that rises in the sedimentation chamber, go up the sedimentation chamber upper portion lateral wall and connect clear water delivery pipe and the backward flow water pipe that is less than clear water delivery pipe, the backward flow water pipe connects to intake antrum down through the backward flow valve, goes up the sludge pipe of sedimentation chamber bottom external zone sludge pump, the sludge pipe connects to the sludge surge tank, sludge surge tank bottom is two the tunnel of branch through the external sludge reflux pump, connect intake antrum down through the sludge reflux valve all the way, another way connects the sludge thickener through the sludge thickening valve.

Furthermore, the clear water discharge pipe and the return water pipe extend into the upper settling chamber and are respectively connected with a float valve switch.

Furthermore, flow meters are arranged on the clear water discharge pipe and the water inlet pipe.

Furthermore, the clear water discharge pipe is externally connected with a secondary sedimentation tank.

Further, the float valve switch is higher than the overflow ring plate.

Furthermore, the water inlet pipe is connected with the anaerobic tank.

Waste water enters the lower water inlet cavity from the nitration tower and then rises from the bottom, the lower water inlet cavity is aerated through the aeration pipe by combining the air inlet pipe, the organic matters are degraded through the activated sludge reaction with the PVDC lace high-load biological rope filler of the middle reaction cavity in the rising process, the organic matters enter the overflow ring plate after passing through the rising hole and overflow to the upper sedimentation cavity to separate sludge and clear water, the clear water above the upper sedimentation cavity is metered and discharged through the clear water discharge pipe after passing through the float valve switch, the sludge is returned to the sludge buffer tank through the sludge pipe by the sludge pump at the bottom, and the sludge buffer tank selects to supplement a system for the lower water inlet cavity or send the sludge to the sludge concentration tank. The upper part of the upper sedimentation cavity can also flow back to the lower water inlet cavity supplementing system through a return water pipe and a float valve switch.

The HFST nitration tower system completes the nitration reaction of ammonia nitrogen through the autoxidation type ammonia oxidizing bacteria, and converts the ammonia nitrogen and organic ammonia into nitrate and nitrite. The high-load biological rope packing of PVDC lace is adopted, the biological load is high, the nitration efficiency of the nitration tower is higher than 80 percent, the service life can be as long as 40 years, and the high-efficiency, inspection-free and maintenance-free biological rope packing is high-efficient.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the device comprises a sealed tower body 1, a lower water inlet cavity 2, a middle reaction cavity 3, an upper sedimentation cavity 4, a water inlet pipe 5, an air inlet pipe 6, an aeration pipe 7, PVDC lace high-load biological rope packing 8, a lower partition plate 9, an upper partition plate 10, a lifting hole 11, an overflow ring plate 12, a clear water discharge pipe 13, a backflow pipe 14, a float valve switch 15, a backflow valve 16, a sludge pipe 17, a sludge pump 18, a sludge buffer tank 19, a sludge backflow pump 20, a sludge backflow valve 21, a sludge concentration valve 22, a sludge concentration tank 23, a flowmeter 24, a secondary sedimentation tank 25 and an anaerobic tank 26.

Detailed Description

The following further description is made in conjunction with the accompanying drawings and examples.

FIG. 1 shows: a HFST nitration tower system comprises a sealed tower body 1, a water inlet pipe 5, an air inlet pipe 6, an aeration pipe 7, PVDC lace high-load biological rope packing 8, a lower partition plate 9, an upper partition plate 10, an overflow ring plate 12, a clear water discharge pipe 13, a backflow water pipe 14, a float valve switch 15, a backflow valve 16, a sludge pipe 17, a sludge pump 18, a sludge buffer tank 19, a sludge backflow pump 20, a sludge backflow valve 21, a sludge concentration valve 22, a sludge concentration tank 23, a flowmeter 24 and a secondary sedimentation tank 25. The inside of a sealed tower body 1 is divided into a lower water inlet cavity 2, a middle reaction cavity 3 and an upper precipitation cavity 4 by upper and lower partition plates 10 and 9, the lower water inlet cavity 2 is externally connected with a water inlet pipe 5 and an air inlet pipe 6, the water inlet pipe 5 is connected by an anaerobic tank 26, the air inlet pipe 6 is connected with an aeration pipe 7 arranged in the lower water inlet cavity, the lower water inlet cavity and the middle reaction cavity are communicated by through holes uniformly distributed on the lower partition plate, and a PVDC lace high-load biological rope filler 8 is arranged in the middle reaction cavity 3; the middle part of the upper clapboard 10 is provided with an ascending hole 11, the upper sedimentation cavity is internally provided with an overflow ring plate 12 which is arranged around the periphery of the ascending hole, the side wall of the upper part of the upper sedimentation cavity 4 is connected with a clear water discharge pipe 13 and a return water pipe 14 which is lower than the clear water discharge pipe, the clear water discharge pipe and the return water pipe are both provided with flow meters 24 and extend into the upper sedimentation cavity and are respectively connected with a float valve switch 15 which is higher than the overflow ring plate, the clear water discharge pipe 13 is externally connected with a secondary sedimentation tank 25, the return water pipe 14 is connected with a water inlet pipe 5 of a lower water inlet cavity through a return valve 16 to feed water back to the lower water inlet cavity, the bottom of the upper sedimentation cavity 4 is externally connected with a sludge pipe 17 with a sludge pump 18, the sludge pipe 17 is connected with a sludge buffer tank 19, the bottom of the sludge buffer tank 19 is externally connected with two paths through a.

Claims

1. A HFST nitration column system, characterized by: comprises a sealed tower body, the sealed tower body is divided into a lower water inlet cavity, a middle reaction cavity and an upper precipitation cavity by an upper clapboard and a lower clapboard, the lower water inlet cavity is externally connected with a water inlet pipe and an air inlet pipe, the air inlet pipe is connected with an aeration pipe arranged in the lower water inlet cavity, the lower water inlet cavity and the middle reaction cavity are communicated by through holes uniformly distributed on the lower clapboard, a PVDC lace high-load biological rope packing is arranged in the middle reaction cavity, go up the baffle middle part and be equipped with the hole that rises, go up and establish an overflow ring board of enclosing the dress in the hole periphery that rises in the sedimentation chamber, go up the sedimentation chamber upper portion lateral wall and connect clear water delivery pipe and the backward flow water pipe that is less than clear water delivery pipe, the backward flow water pipe connects to intake antrum down through the backward flow valve, goes up the sludge pipe of sedimentation chamber bottom external zone sludge pump, the sludge pipe connects to the sludge surge tank, sludge surge tank bottom is two the tunnel of branch through the external sludge reflux pump, connect intake antrum down through the sludge reflux valve all the way, another way connects the sludge thickener through the sludge thickening valve.

2. A HFST nitration tower system according to claim 1, wherein: the clear water discharge pipe and the return water pipe extend into the upper settling chamber and are respectively connected with a float valve switch.

3. A HFST nitration tower system according to claim 1, wherein: and flow meters are arranged on the clear water discharge pipe and the water inlet pipe.

4. A HFST nitration tower system according to claim 1, wherein: the clear water discharge pipe is externally connected with a secondary sedimentation tank.

5. A HFST nitration tower system according to claim 2, wherein: the float valve switch is higher than the overflow ring plate.

6. A HFST nitration tower system according to claim 1, wherein: the water inlet pipe is connected with the anaerobic tank.