CN107352701B - High ammonia nitrogen sewage treatment device with circulating tank and process - Google Patents
High ammonia nitrogen sewage treatment device with circulating tank and process Download PDFInfo
- Publication number
- CN107352701B CN107352701B CN201710826334.8A CN201710826334A CN107352701B CN 107352701 B CN107352701 B CN 107352701B CN 201710826334 A CN201710826334 A CN 201710826334A CN 107352701 B CN107352701 B CN 107352701B
- Authority
- CN
- China
- Prior art keywords
- sewage
- tank
- pipeline
- valve
- circulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 174
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000000926 separation method Methods 0.000 claims abstract description 59
- 239000007789 gas Substances 0.000 claims abstract description 53
- 238000004062 sedimentation Methods 0.000 claims abstract description 49
- 239000006260 foam Substances 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000007790 solid phase Substances 0.000 claims description 21
- 239000012071 phase Substances 0.000 claims description 19
- 239000013530 defoamer Substances 0.000 claims description 17
- 239000002351 wastewater Substances 0.000 claims description 8
- 239000006227 byproduct Substances 0.000 claims description 7
- 239000012629 purifying agent Substances 0.000 claims description 7
- 238000004065 wastewater treatment Methods 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000005187 foaming Methods 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims description 2
- 238000005191 phase separation Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 2
- 238000000746 purification Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000000428 dust Substances 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000002354 daily effect Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000029219 regulation of pH Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/12—Prevention of foaming
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a high ammonia nitrogen sewage treatment device with a circulating tank and a process thereof. The high ammonia nitrogen sewage treatment circulating pool comprises a sewage pool and a sedimentation pool; a high ammonia nitrogen sewage treatment device of a sewage treatment circulating pool comprises the circulating pool and a vertical rotary foam separation device, wherein the vertical rotary foam separation device consists of a wave tube, a gas-liquid separation tank and a tail gas tube. The method has the advantages that the problem of over-stability of bubbles is effectively controlled, the stripping efficiency of denitrification of ammonia nitrogen sewage at normal temperature can be further improved, the occupied area of equipment can be effectively reduced, the mechanical strength of a wave tube and a tail gas purification tube is increased, the equipment is more flexible to install, the process route is environment-friendly, simple and efficient, low in cost, high in universality and good in repeatability, and the method has a wide market prospect.
Description
Technical Field
The invention relates to a sewage treatment device and a sewage treatment process in the field of environmental protection, in particular to a high ammonia nitrogen sewage treatment circulating pool, a sewage treatment device consisting of the sewage circulating pool and a sewage treatment process.
Background
The types of the sewage treatment processes adopted in China at present mainly include the following: the traditional activated sludge treatment process, the AB process, the A/O and A2/O process, the hydrolysis-aerobic process, the oxidation ditch process, the SBR and the modification process thereof, the aeration biological filter process, the biological contact oxidation process, the oxidation pond, the BIOLAK and the land treatment process. With the development of sewage treatment industry, various sewage treatment processes are applied to sewage treatment plants in China, wherein A/O, A2/O and its modified process, oxidation ditch, SBR and its modified process are used as main, other processes such as AB process, aeration biological filter, hydrolysis-aerobic process, biological contact oxidation process, stabilization pond, BIOLAK process, wetland treatment and other sewage treatment processes are also applied in a certain scale, but no matter what kind of process, a large area of sewage pool or wetland is needed, a special aeration and auxiliary sedimentation device is needed to be added, if the treatment agent needs to be added, and an agent adding and stirring device needs to be additionally arranged, the construction and operation cost is high, the occupied area is large, the secondary treatment of the discharged sludge is avoided, and the like, but also has no capacity for treating ammonia nitrogen or complex organic wastewater with high salt content and high concentration (more than or equal to 600 mg/L). The domestic existing industrial flue gas treatment mainly comprises a granite film method, a spraying method, a cloth bag, electrostatic dust removal and other industrial flue gas desulfurization and dust removal treatment processes, has high energy consumption, low efficiency or high efficiency and large investment, and is particularly difficult and serious in the case of high-temperature, high-humidity, high-sulfur and high-dust-content flue gas.
In order to solve the technical problems, CN201210483620.6 discloses a new process for treating waste water and waste gas by a multiphase flow rotary foam separation method, which replaces the traditional high ammonia nitrogen sewage treatment process and the traditional wet flue gas desulfurization dust removal process by a multiphase flow rotary foam separation device specially designed in a matching way and is used for treating high ammonia nitrogen waste water with the concentration of more than or equal to 600 mg/L. But in practical engineering practice we find that: the simple design of the circulating tank ensures that the process has small mass transfer driving force for denitrification at normal temperature of 200-600 mg/L ammonia nitrogen sewage when treating high ammonia nitrogen sewage, thereby leading to extremely low stripping efficiency. In fact, if the ammonia nitrogen in the sewage exceeds 300mg/L, biochemical treatment is carried out, biological bacteria in a biochemical system are extremely difficult to survive, and the sewage is difficult to discharge after reaching the standard, so that the popularization of the technology is greatly limited. Although the design of the circulation tank of the device solves the technical problem of three-phase synchronous separation of high ammonia nitrogen sewage in a certain range, the simple design of the circulation tank also obviously has the following defects:
the simple design of the circulating tank is used for normal-temperature denitrification of 200-600 mg/L ammonia nitrogen sewage, the retention time in the circulating tank is short, incomplete separation is caused, the mass transfer driving force is reduced, and the stripping efficiency is reduced;
the method is used for industrial sewage with high tar component content, high water viscosity, high surface tension and high foaming coefficient, and a large amount of sewage generates high stability, so that the wave tube can be submerged, and even can be filled with the wave tube when the sewage is serious, so that the system can not be operated;
the device is difficult to meet the normal-temperature denitrification requirement of the ultra-large-scale high ammonia nitrogen sewage;
a rotary foam separation method high ammonia nitrogen sewage normal temperature denitrification device designed by a circulation tank is used for treating high water content high ammonia nitrogen sewage with the water content of more than 5000mg/L, the required occupied area is large, and the device is difficult to be used in modern enterprises with high production device intensification degree and small and medium-sized enterprises with small concentrated open space area;
a rotary foam separation method high ammonia nitrogen sewage normal temperature denitrification device designed for a circulation tank is used for treating large water volume, and the circulation tank needs to bear larger mechanical strength and dynamic load and needs to increase larger equipment cost.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a high ammonia nitrogen sewage treatment circulating tank, a sewage treatment device with the circulating tank and a treatment process thereof. The invention comprises the following steps:
a high ammonia nitrogen sewage treatment circulating pool 1 comprises a sewage pool 11 and a sedimentation pool 12, wherein the sewage pool 11 is separated from the sedimentation pool 12 by a separation wall 13; the separation wall 13 is provided with a sewage channel 14 which is communicated with the sewage tank 11 and the sedimentation tank 12; a sewage circulating pipeline channel 111, a raw water pipeline channel 112 and a pH adjusting pipeline channel 113 are formed in the side wall of the sewage pool 11; the sedimentation tank bottom is provided with solid phase collection well 121, is provided with the pipeline 122 that can discharge the sedimentation tank with content in the well among the solid phase collection well 121, and the sedimentation tank lateral wall is provided with sewage discharge pipe 123 near the position of bottom, and the position that is close to the top is provided with defoaming ware 124 and the sewage backward flow mouth 125 with the same horizontal position setting of defoaming ware, and the top of sedimentation tank is provided with sewage entry 126.
The defoamer is selected from one of mechanical defoamer, chemical defoamer and ultrasonic defoamer.
And when the foaming coefficient of the ammonia nitrogen raw water is too small, replacing the foam breaker with a foam increasing device.
A high ammonia nitrogen sewage treatment plant with a circulating tank comprises a circulating tank 1 and a rotary foam separation device 2; the rotating foam separation device 2 consists of a wave tube 21, a gas-liquid separation tank 22 and a tail gas tube 23, wherein the wave tube 21 and the gas-liquid separation tank 22 at the lower part of the tail gas tube 23 are connected by a gas-phase communicating tube 24; a first valve 51 is arranged outside the raw water pipeline 112; the circulating pool 1 is connected with a circulating pump 4 through a sewage circulating pipeline channel 111, the other end of the circulating pump 4 is connected with a gas-liquid separation tank 22, and a second valve 52 is arranged on a pipeline from the circulating pump 4 to a wave tube 21; an outlet at the bottom of the gas-liquid separation tank 22 is communicated with a sewage inlet 126 of the circulating tank, and a third valve 53 is arranged on a passage; the sewage pump 5 is connected with the sedimentation tank through a sewage discharge pipeline 123, the other end of the sewage pump 5 is provided with three branches which are respectively communicated with a pure water outlet and a defoamer 124 and a sewage return port 125 in the circulating tank 1, a pipeline communicated with the defoamer is provided with a fourth valve 54, a pipeline communicated with the pure water outlet is provided with a fifth valve 55, and a pipeline connected with the sewage return port 125 is provided with a sixth valve 56; the upper part of the wave tube 21 is communicated with the fan 3, and a seventh valve 57 for controlling air quantity is arranged on the passage; a purifying agent feeding pipeline is arranged at the upper part of the side wall of the tail gas pipe 23, an eighth valve 58 is arranged on the pipeline, a byproduct outlet pipeline is arranged at the bottom of the tail gas pipe 23, and a ninth valve 59 is arranged on the pipeline; the sewage pump 6 is communicated with the bottom of the solid phase collecting well 121 through a pipeline 122. The tail gas pipe 23 is internally provided with a taper spiral filler; the wave tube 21 is also provided with rotary flow nozzles, and 1-16 rotary flow nozzles are arranged according to the requirements of different water quantities and different water qualities.
A process for treating high ammonia nitrogen sewage by adopting a high ammonia nitrogen sewage treatment device with a circulating tank comprises the following steps: firstly, a first valve 51 is opened, raw water with high ammonia nitrogen firstly enters a sewage tank 11 of a circulating tank, the pH value of sewage in the tank is adjusted through a pH adjusting pipeline channel 113, and then the sewage is sent into a wave tube 21 through a circulating pump 4 and contacts with gas phase sent by a fan 3; the gas phase and the liquid phase simultaneously enter a gas-liquid separation tank 22 to complete gas-liquid separation, wherein the gas phase enters a tail gas pipe 23 through a gas-phase communicating pipe 24, and the liquid phase enters a sedimentation tank 12 of the circulation tank 1 through a third valve 53 and a sewage inlet 126 to complete liquid-solid phase separation; the solid phase in the solid phase collecting well 121 in the sedimentation tank 12 is periodically discharged through a pipeline 122; the clear solution is passed through NH3The sewage is discharged through the sewage pump 5 and the fifth valve 55 after the detection of N is qualified, and if the preset index is not reached, the sewage returns to the sedimentation tank through the fourth valve 54 and the sixth valve 56, and then returns to the sewage tank 11 through the sewage channel 14 of the partition wall 13; the gas phase entering the tail gas pipe 23 through the gas phase communicating pipe 24 is purified in the tail gas pipe and discharged from the tail gas outlet 231, and the ammonia absorption by-product purified by the purifying agent is discharged through the ninth valve 59.
The invention has the advantages that:
(1) effectively controlling the problem of over-stability of the bubbles and ensuring that the update frequency of the bubbles is not lower than 30 times/second;
(2) the nitrogen removal efficiency of 200-600 mg/L ammonia nitrogen sewage at normal temperature can be further improved, the ammonia nitrogen sewage with any height can be reduced to below 200mg/L, and the ammonia nitrogen sewage is directly sent to a subsequent biochemical system for treatment until the ammonia nitrogen sewage reaches the standard and is discharged.
(3) The circulation tank is changed into a circulation tank, and an independent design scheme of separating the circulation tank from a wave tube and a tail gas tube is adopted, so that gas-liquid separation and liquid-solid separation can be independently and synchronously carried out without mutual influence, and higher separation efficiency is obtained. Can meet the treatment requirements of the sewage with large water volume and extra high ammonia nitrogen content exceeding 5000 mg/L.
(4) The circulation pond of independent design has increased the flocculation of sewage and has subsided and the defoaming, increase the bubble device, and adaptable more extensive water quality treatment demand can also increase charge device as required to satisfy pH regulation, flocculation settlement or other preliminary treatment demands, effectively promoted the technical content of this technology.
(5) After the circulation tank is changed into the external design of the circulation tank, the wave tube and the exhaust gas cleaning tube can be independently designed, the problem of mechanical strength of the circulation tank does not need to be considered, and the mass transfer efficiency of the wave tube and the exhaust gas cleaning tube is improved.
(6) The external circulating tank can independently change the size and the shape of the external circulating tank according to the needs, effectively reduce the occupied area of equipment and better meet the requirements of normal-temperature denitrification of various water qualities, different sewage treatment amounts and ammonia nitrogen contents.
(7) The design of the vertical rotary foam separating device can effectively reduce the floor area of the equipment, increase the mechanical strength of the wave tube and the tail gas cleaning tube and enable the installation of the equipment to be more flexible.
(8) The independent design of the gas-phase communicating pipe can effectively reduce gas-phase resistance and improve gas-liquid separation efficiency.
Drawings
FIG. 1 is a sectional view of a high ammonia nitrogen wastewater treatment circulating tank of the invention.
FIG. 2 is a top view of the high ammonia nitrogen wastewater treatment circulating tank of the invention.
FIG. 3 is a schematic structural diagram of the high ammonia nitrogen sewage treatment device with the sewage treatment circulating pool.
Detailed Description
The present invention is further illustrated by the following examples, but is not limited to the structures and methods described in the examples below.
The first embodiment is as follows:
the project adopts a comprehensive sewage treatment process of 'normal-temperature denitrification by a rotary foam separation method, deep purification of tail gas and biochemical treatment (containing an oxidation pond)', and is provided with a sewage circulating pool with the depth of 10m3. The sewage treatment circulating pool comprises a sewage pool 11 and a sedimentation pool 12, and the sewage pool 11 is separated from the sedimentation pool 12 by a separation wall 13; the separation wall 13 is provided with a sewage channel 14 which is communicated with the sewage tank 11 and the sedimentation tank 12; a sewage circulating pipeline channel 111, a raw water pipeline channel 112 and a pH adjusting pipeline channel 113 are formed in the side wall of the sewage pool 11; the bottom of the sedimentation tank is provided with a solid phase collection well 121, the solid phase collection well 121 is internally provided with a pipeline 122 which can discharge the contents in the well out of the sedimentation tank, the side wall of the sedimentation tank is provided with a sewage discharge pipeline 123 at a position close to the bottom, a defoamer 124 is arranged at a position close to the top, the defoamer adopts a mechanical defoamer, the ammonia nitrogen in the sewage is firstly reduced to 168mg/L from 2090mg/L through the normal-temperature denitrification by a rotary foam separation method, and then the ammonia nitrogen is directly sent to a biochemical treatment system, so that the outlet ammonia nitrogen value of the oxidation pond is reduced to 0.38 mg/L (the discharge standard is 15 mg/L). A sewage return port 125 arranged at the same horizontal position as the foam breaker, and a sewage inlet 126 arranged at the top of the sedimentation tank;
wherein, the sewage treatment device comprises a circulating tank 1 and a rotary foam separation device 2; the rotating foam separation device 2 consists of a wave tube 21, a gas-liquid separation tank 22 and a tail gas tube 23, wherein the wave tube 21 and the gas-liquid separation tank 22 at the lower part of the tail gas tube 23 are connected by a gas-phase communicating tube 24; a first valve 51 is arranged outside the raw water pipeline 112; the circulating pool 1 is connected with a circulating pump 4 through a sewage circulating pipeline channel 111, the other end of the circulating pump 4 is connected with a gas-liquid separation tank 22, and a second valve 52 is arranged on a pipeline from the circulating pump 4 to a wave tube 21; an outlet at the bottom of the gas-liquid separation tank 22 is communicated with a sewage inlet 126 of the circulating tank, and a third valve 53 is arranged on a passage; the sewage pump 5 is connected with the sedimentation tank through a sewage discharge pipeline 123, the other end of the sewage pump 5 is provided with three branches which are respectively communicated with a pure water outlet and a defoamer 124 and a sewage return port 125 in the circulating tank 1, a pipeline communicated with the defoamer is provided with a fourth valve 54, a pipeline communicated with the pure water outlet is provided with a fifth valve 55, and a pipeline connected with the sewage return port 125 is provided with a sixth valve 56; the upper part of the wave tube 21 is communicated with the fan 3, and a seventh valve 57 for controlling air quantity is arranged on the passage; a purifying agent feeding pipeline is arranged at the upper part of the side wall of the tail gas pipe 23, an eighth valve 58 is arranged on the pipeline, a byproduct outlet pipeline is arranged at the bottom of the tail gas pipe 23, and a ninth valve 59 is arranged on the pipeline; the sewage pump 6 is communicated with the bottom of the solid phase collecting well 121 through a pipeline 122. The tail gas pipe 23 is internally provided with a taper spiral filler; 4 rotating flow nozzles are arranged in the wave tube.
Meanwhile, the project introduces sulfur-containing flue gas of the coal-fired boiler of the enterprise for the first time to treat high ammonia nitrogen wastewater, and the aim of synchronously treating the flue gas wastewater is fulfilled. Achieves two purposes by one stroke, has double effects, reduces the project investment and reduces the treatment cost. After the operation, the dust content in the outlet tail gas of the project is reduced to 156 mg/m3(emission standard 200 mg/m)3) The total sulfide in the tail gas is reduced to 456 mg/m3(discharge standard 900 mg/m)3). The rotating foam separation device adopted by the project is provided with 10m3The external circulating pool effectively reduces the occupied area and investment of the equipment. Through 2-stage normal-temperature denitrification and the addition of a tail gas purification tower and a biochemical treatment system, the practical requirements of synchronous advanced treatment and synchronous standard reaching of flue gas and wastewater are better solved.
Example two:
the coking wastewater treatment of a certain group in Jiangxi has the daily treatment wastewater reaching 1440t/d, the imported ammonia nitrogen value reaching 5021mg/L and the foaming coefficient of the sewage reaching 2.52, and belongs to the sewage which is easy to foam. If the circulation tank scheme is adopted, the volume of the circulation tank needs at least 100 cubes, so that the occupied area is large, the manufacturing cost is high, and the bubbles in the tank are difficult to eliminate. For the situation, an external circulation tank scheme is adopted.
In the project, a sewage circulating tank 120m is configured3The sewage treatment circulating pool comprises a sewage pool11 and a sedimentation tank 12, wherein a separation wall 13 separates the sewage tank 11 from the sedimentation tank 12; the separation wall 13 is provided with a sewage channel 14 which is communicated with the sewage tank 11 and the sedimentation tank 12; a sewage circulating pipeline channel 111, a raw water pipeline channel 112 and a pH adjusting pipeline channel 113 are formed in the side wall of the sewage pool 11; the sedimentation tank bottom is provided with solid phase collection well 121, is provided with the pipeline 122 that can discharge the sedimentation tank with content in the well in the solid phase collection well 121, and the position that the sedimentation tank lateral wall is close to the bottom is provided with sewage discharge pipe 123, and the position that is close to the top is provided with defoaming ware 124, and the defoaming ware adopts the mode that mechanical defoaming ware and ultrasonic wave defoaming ware combine. A sewage return port 125 arranged at the same horizontal position as the foam breaker, and a sewage inlet 126 arranged at the top of the sedimentation tank;
the sewage treatment device comprises a circulating tank 1 and a rotary foam separation device 2; the rotating foam separation device 2 consists of a wave tube 21, a gas-liquid separation tank 22 and a tail gas tube 23, wherein the wave tube 21 and the gas-liquid separation tank 22 at the lower part of the tail gas tube 23 are connected by a gas-phase communicating tube 24; a first valve 51 is arranged outside the raw water pipeline 112; the circulating pool 1 is connected with a circulating pump 4 through a sewage circulating pipeline channel 111, the other end of the circulating pump 4 is connected with a gas-liquid separation tank 22, and a second valve 52 is arranged on a pipeline from the circulating pump 4 to a wave tube 21; an outlet at the bottom of the gas-liquid separation tank 22 is communicated with a sewage inlet 126 of the circulating tank, and a third valve 53 is arranged on a passage; the sewage pump 5 is connected with the sedimentation tank through a sewage discharge pipeline 123, the other end of the sewage pump 5 is provided with three branches which are respectively communicated with a pure water outlet and a defoamer 124 and a sewage return port 125 in the circulating tank 1, a pipeline communicated with the defoamer is provided with a fourth valve 54, a pipeline communicated with the pure water outlet is provided with a fifth valve 55, and a pipeline connected with the sewage return port 125 is provided with a sixth valve 56; the upper part of the wave tube 21 is communicated with the fan 3, and a seventh valve 57 for controlling air quantity is arranged on the passage; a purifying agent feeding pipeline is arranged at the upper part of the side wall of the tail gas pipe 23, an eighth valve 58 is arranged on the pipeline, a byproduct outlet pipeline is arranged at the bottom of the tail gas pipe 23, and a ninth valve 59 is arranged on the pipeline; the sewage pump 6 is communicated with the bottom of the solid phase collecting well 121 through a pipeline 122. The tail gas pipe 23 is internally provided with a taper spiral filler; 12 rotating flow nozzles are arranged in the wave tube.
The ammonia nitrogen value at the outlet is directly reduced to 157mg/L, and the ammonia nitrogen value can be directly sent to the original biochemical system for treatment without being diluted by water, so that the standard discharge is realized. The project better solves the defoaming problem of the system, simultaneously reduces the occupied area by nearly 40 percent, reduces the equipment investment by 42.2 percent and reduces the treatment cost by 46.7 percent.
Example three:
in a chemical plant in Hubei, ammonia nitrogen in discharged sewage seriously exceeds the standard by one set of original sewage treatment system. The daily ammonia nitrogen sewage amount discharged by the enterprise is only 20 tons every day, and the occupied area of the original sewage treatment system is small. But the ammonia nitrogen value in the sewage is up to 3215 mg/L, and the ammonia nitrogen value can be reduced to below 200mg/L for biochemical treatment by at least 2-level method. On-site inspection also shows that if a new device is added, the floor area of the new device must be less than 10m2. According to the situation, a scheme of a 2-stage vertical type rotary foam separation normal-temperature denitrification device and an external circulating tank is adopted, and the expected target of biochemical treatment of the outlet ammonia nitrogen value of the pretreatment system which is not more than 180mg/L is achieved. The actual floor area is controlled to be 8m2The problem that the ammonia nitrogen in the discharged sewage of the enterprise seriously exceeds the standard is better solved.
In the project, a sewage circulating tank 7m is arranged3The sewage treatment circulating pool comprises a sewage pool 11 and a sedimentation pool 12, and the sewage pool 11 is separated from the sedimentation pool 12 by a separation wall 13; the separation wall 13 is provided with a sewage channel 14 which is communicated with the sewage tank 11 and the sedimentation tank 12; a sewage circulating pipeline channel 111, a raw water pipeline channel 112 and a pH adjusting pipeline channel 113 are formed in the side wall of the sewage pool 11; the sedimentation tank bottom is provided with solid phase collection well 121, is provided with the pipeline 122 that can discharge the sedimentation tank with content in the well in the solid phase collection well 121, and the position that the sedimentation tank lateral wall is close to the bottom is provided with sewage discharge pipe 123, and the position that is close to the top is provided with defoaming ware 124, and the defoaming ware adopts the mode that mechanical defoaming ware and ultrasonic wave defoaming ware combine. A sewage return port 125 arranged at the same horizontal position as the foam breaker, and a sewage inlet 126 arranged at the top of the sedimentation tank;
the sewage treatment device comprises a circulating tank 1 and a rotary foam separation device 2; the rotating foam separation device 2 consists of a wave tube 21, a gas-liquid separation tank 22 and a tail gas tube 23, wherein the wave tube 21 and the gas-liquid separation tank 22 at the lower part of the tail gas tube 23 are connected by a gas-phase communicating tube 24; a first valve 51 is arranged outside the raw water pipeline 112; the circulating pool 1 is connected with a circulating pump 4 through a sewage circulating pipeline channel 111, the other end of the circulating pump 4 is connected with a gas-liquid separation tank 22, and a second valve 52 is arranged on a pipeline from the circulating pump 4 to a wave tube 21; an outlet at the bottom of the gas-liquid separation tank 22 is communicated with a sewage inlet 126 of the circulating tank, and a third valve 53 is arranged on a passage; the sewage pump 5 is connected with the sedimentation tank through a sewage discharge pipeline 123, the other end of the sewage pump 5 is provided with three branches which are respectively communicated with a pure water outlet and a defoamer 124 and a sewage return port 125 in the circulating tank 1, a pipeline communicated with the defoamer is provided with a fourth valve 54, a pipeline communicated with the pure water outlet is provided with a fifth valve 55, and a pipeline connected with the sewage return port 125 is provided with a sixth valve 56; the upper part of the wave tube 21 is communicated with the fan 3, and a seventh valve 57 for controlling air quantity is arranged on the passage; a purifying agent feeding pipeline is arranged at the upper part of the side wall of the tail gas pipe 23, an eighth valve 58 is arranged on the pipeline, a byproduct outlet pipeline is arranged at the bottom of the tail gas pipe 23, and a ninth valve 59 is arranged on the pipeline; the sewage pump 6 is communicated with the bottom of the solid phase collecting well 121 through a pipeline 122. The tail gas pipe 23 is internally provided with a taper spiral filler; 3 rotating flow nozzles are arranged in the wave tube.
Claims (6)
1. A high ammonia nitrogen sewage treatment device with a circulating tank comprises a circulating tank (1) and a vertical rotary foam separation device (2); the circulating pool (1) comprises a sewage pool (11) and a sedimentation pool (12), and the sewage pool (11) is separated from the sedimentation pool (12) by a partition wall (13); the separation wall (13) is provided with a sewage channel (14) which is communicated with the sewage tank (11) and the sedimentation tank (12); the side wall of the sewage pool (11) is provided with a sewage circulating pipeline channel (111), a raw water pipeline channel (112) and a pH adjusting pipeline channel (113); a solid phase collecting well (121) is arranged at the bottom of the sedimentation tank, a pipeline (122) capable of discharging the contents in the well out of the sedimentation tank is arranged in the solid phase collecting well (121), a sewage discharging pipeline (123) is arranged at the position, close to the bottom, of the side wall of the sedimentation tank, a foam breaker (124) and a sewage backflow port (125) which is arranged at the same horizontal position as the foam breaker are arranged at the position, close to the top, of the sedimentation tank, and a sewage inlet (126) is arranged at the top of the sedimentation tank; the vertical rotary foam separation device (2) consists of a wave tube (21), a gas-liquid separation tank (22) and a tail gas tube (23), wherein the wave tube (21) and the gas-liquid separation tank (22) at the lower part of the tail gas tube (23) are connected by a gas-phase communicating tube (24); a first valve (51) is arranged outside the raw water pipeline (112); the circulating pool (1) is connected with an inlet of a circulating pump (4) through a sewage circulating pipeline channel (111), an outlet of the circulating pump (4) is connected with a wave tube (21), and a second valve (52) is arranged on a pipeline from the circulating pump (4) to the wave tube (21); an outlet at the bottom of the gas-liquid separation tank (22) is communicated with a sewage inlet (126) of the circulating tank, and a third valve (53) is arranged on a passage; the sewage pump (5) is connected with the sedimentation tank through a sewage discharge pipeline (123), the other end of the sewage pump (5) is provided with three branches which are respectively communicated with a pure water outlet and a defoamer (124) and a sewage return port (125) in the circulating tank (1), a pipeline communicated with the defoamer is provided with a fourth valve (54), a pipeline communicated with the pure water outlet is provided with a fifth valve (55), and a pipeline connected with the sewage return port (125) is provided with a sixth valve (56); the upper part of the wave tube (21) is communicated with the fan (3), and a seventh valve (57) for controlling air volume is arranged on the passage; a purifying agent feeding pipeline is arranged at the upper part of the side wall of the tail gas pipe (23), an eighth valve (58) is arranged on the pipeline, a byproduct outlet pipeline is arranged at the bottom of the tail gas pipe (23), and a ninth valve (59) is arranged on the pipeline; the sewage pump (6) is communicated with the bottom of the solid phase collecting well (121) through a pipeline (122).
2. The wastewater treatment apparatus according to claim 1, wherein the foam breaker is selected from one or more of mechanical foam breaker, chemical foam breaker and ultrasonic foam breaker.
3. The sewage treatment device according to claim 1, wherein the foam breaker is replaced by a foam booster when the foaming coefficient of the ammoniacal nitrogen raw water is too small.
4. The sewage treatment plant according to claim 1, characterized in that the tail gas pipe (23) is filled with a tapered spiral filler.
5. The wastewater treatment apparatus according to claim 1, wherein the wave tube (21) is provided with an array of rotating flow nozzles, and the number of the rotating flow nozzles is set according to the requirements of different water volumes and qualities.
6. A process for treating high ammonia nitrogen wastewater by using the wastewater treatment device as claimed in claim 1, comprising the following steps: firstly, opening a first valve (51), leading raw water with high ammonia nitrogen to enter a sewage tank (11) of a circulating tank, adjusting the pH value of sewage in the tank through a pH adjusting pipeline channel (113), sending the sewage into a wave tube (21) through a circulating pump (4), and contacting with gas phase sent by a fan (3); gas and liquid phases simultaneously enter a gas-liquid separation tank (22) to complete gas-liquid separation, wherein the gas phase enters a tail gas pipe (23) through a gas-phase communicating pipe (24), and the liquid phase enters a sedimentation tank (12) of the circulation tank (1) through a third valve (53) and a sewage inlet (126) to complete liquid-solid phase separation; the solid phase in the solid phase collecting well (121) in the sedimentation tank (12) is periodically discharged through a pipeline (122); the clear solution is passed through NH3The sewage is discharged through a sewage pump (5) and a fifth valve (55) after the N is detected to be qualified, and if the N is not detected to be qualified, the sewage returns to the sedimentation tank through a fourth valve (54) and a sixth valve (56) channel and returns to the sewage tank (11) through a sewage channel (14) of a partition wall (13); the gas phase entering the tail gas pipe (23) through the gas phase communicating pipe (24) is purified in the tail gas pipe and discharged from a tail gas outlet (231), and the ammonia absorption by-product purified by the purifying agent is discharged through a ninth valve (59).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826334.8A CN107352701B (en) | 2017-09-14 | 2017-09-14 | High ammonia nitrogen sewage treatment device with circulating tank and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826334.8A CN107352701B (en) | 2017-09-14 | 2017-09-14 | High ammonia nitrogen sewage treatment device with circulating tank and process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107352701A CN107352701A (en) | 2017-11-17 |
| CN107352701B true CN107352701B (en) | 2020-10-27 |
Family
ID=60291552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710826334.8A Expired - Fee Related CN107352701B (en) | 2017-09-14 | 2017-09-14 | High ammonia nitrogen sewage treatment device with circulating tank and process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107352701B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314967A (en) * | 2021-12-30 | 2022-04-12 | 广东省水利水电第三工程局有限公司 | Device and method for treating ultrahigh ammonia nitrogen sewage |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005046688A (en) * | 2003-07-31 | 2005-02-24 | Fuji Electric Systems Co Ltd | Cleaning method of ammonia-containing waste water |
| CN102992418A (en) * | 2012-11-25 | 2013-03-27 | 湖南科鹰特种环保设备技术有限公司 | Multiphase flow rotation foam separation device and waste water/ gas treatment technology using same |
| CN204588745U (en) * | 2015-04-30 | 2015-08-26 | 徐州工程学院 | Device for treating high-concentration ammonia |
| CN104986899A (en) * | 2015-07-27 | 2015-10-21 | 广州华浩能源环保集团有限公司 | High-concentration ammonia-nitrogen wastewater ammonia stripping and resourceful treatment system and treatment method |
| KR101682392B1 (en) * | 2016-04-19 | 2016-12-05 | 정재억 | Wastewater disposal equipment |
| CN206168198U (en) * | 2016-09-08 | 2017-05-17 | 福建省上杭县九洲硅业有限公司 | Hot stove SOx/NOx control system in industrial silicon ore deposit based on two alkaline processs of sodium calcium |
-
2017
- 2017-09-14 CN CN201710826334.8A patent/CN107352701B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005046688A (en) * | 2003-07-31 | 2005-02-24 | Fuji Electric Systems Co Ltd | Cleaning method of ammonia-containing waste water |
| CN102992418A (en) * | 2012-11-25 | 2013-03-27 | 湖南科鹰特种环保设备技术有限公司 | Multiphase flow rotation foam separation device and waste water/ gas treatment technology using same |
| CN204588745U (en) * | 2015-04-30 | 2015-08-26 | 徐州工程学院 | Device for treating high-concentration ammonia |
| CN104986899A (en) * | 2015-07-27 | 2015-10-21 | 广州华浩能源环保集团有限公司 | High-concentration ammonia-nitrogen wastewater ammonia stripping and resourceful treatment system and treatment method |
| KR101682392B1 (en) * | 2016-04-19 | 2016-12-05 | 정재억 | Wastewater disposal equipment |
| CN206168198U (en) * | 2016-09-08 | 2017-05-17 | 福建省上杭县九洲硅业有限公司 | Hot stove SOx/NOx control system in industrial silicon ore deposit based on two alkaline processs of sodium calcium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107352701A (en) | 2017-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201313860Y (en) | Integrated aeration-sedimentation aerobic reactor | |
| CN203715375U (en) | Automatic circulation rotary mixing type internal circulation anaerobic reactor | |
| CN205346962U (en) | Novel anaerobic/Aerobic bioreactor | |
| CN109516553A (en) | Efficient anaerobic denitrification organisms reactor | |
| CN100494090C (en) | Outside loop type contact deflector anaerobic reactor, and working method | |
| CN201665593U (en) | Desulfurization waste water treating system | |
| CN202038939U (en) | Fluorine-contained wastewater treatment system | |
| CN101703866A (en) | Smoke alkali-free adsorption type biological desulphurization technology | |
| CN1307112C (en) | Reactor with a three-phase separating device and method for separating a three-phase mixture | |
| CN107352701B (en) | High ammonia nitrogen sewage treatment device with circulating tank and process | |
| CN112939216B (en) | Organic wastewater built-in block anaerobic reactor | |
| CN2923681Y (en) | Sequential bulk type high sulfur-contained waste water and caustic sludge waste liquid comprehensive treatment apparatus | |
| CN201458821U (en) | anaerobic reactor | |
| CN205346964U (en) | Anaerobic/Aerobic bioreactor | |
| CN109231684B (en) | Treatment method and system for purifying phosphogypsum storage yard penetrating fluid | |
| CN105776525A (en) | Integrated two-phase anaerobic desulfurization reactor and wastewater treatment method thereof | |
| CN216236582U (en) | Concentrated water denitrification processing apparatus of MABR reverse osmosis | |
| CN210825858U (en) | Integrated waste water biological synchronous denitrification and calcium removal device | |
| CN203768114U (en) | Integrated baffle plate internal-circulating autotrophic nitrogen removal granular sludge reactor | |
| CN209411877U (en) | Efficient anaerobic denitrification organisms reactor | |
| CN203568922U (en) | Deep sewage treatment system | |
| CN205500902U (en) | High concentration chemical wastewater anaerobic treatment equipment | |
| CN205398221U (en) | Double -phase anaerobism flue gas desulfurization reaction ware of integral type | |
| CN201458822U (en) | Integral three-phase separating arrangement of vertical anaerobic treatment tank | |
| CN201330194Y (en) | Assemble-type three-phase separator for anaerobic reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201027 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |