CN217025452U - Device for integrally removing ammonia nitrogen in wastewater - Google Patents

Abstract

An integrated device for removing ammonia nitrogen in wastewater relates to the technical field of wastewater treatment. Ammonia nitrogen solution problem to among the SOx/NOx control system acid waste water the utility model discloses the device. The device comprises a box body, a solid doser, a liquid doser, a clapboard, a stirrer and a water production lift pump; the number of the partition plates is 3, and the box body is divided into 2 reaction zones, 1 flocculation zone and 1 water collecting zone through the 3 partition plates; the 2 reaction zones are respectively provided with a solid doser and a stirrer; the flocculation area is provided with a stirrer; the water collecting area is connected with a water producing lift pump. The utility model has simple structure and can effectively remove the waste waterNH₄N, partial COD and suspended matters, thereby greatly improving the effluent quality.

Description

Device of ammonia nitrogen in integration desorption waste water

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to a device for integrally removing ammonia nitrogen in wastewater.

Background

With the continuous deepening of the reform and the opening of China, the industrial level in the fields of metallurgy, petroleum, chemical industry and the like is greatly developed. The development of industry brings great economic benefits to human beings and also causes serious damage to the environment.

Water resources are carrier substances of all living beings on the earth and natural resources on which all living organisms on the earth live, and the pollution condition of the water resources has attracted high attention of human beings. In recent years, under the influence of factors such as industrial pollution, domestic sewage, non-point source pollution and the like, the water environment pollution deterioration condition in China is more and more serious, the water environment pollution deterioration not only can bring serious adverse effects to the human water demand and the smooth development of social life production, but also can restrict the realization of the strategic target of sustainable development in China.

Ammonia nitrogen is a common water pollutant and mainly exists in water in the forms of nitrate, nitrite, ammonia molecules and organic nitrogen. On one hand, ammonia nitrogen can cause eutrophication of water bodies, cause mass propagation of algae and other microorganisms in water, reduce dissolved oxygen in water, cause mass death of fishes, and even cause drying of lakes and death of fishes. On the other hand, ammonia is oxidized into nitrite and nitrate under the action of nitrobacteria, the nitrate can induce methemoglobinemia of infants, and nitrosamine generated after the nitrite is hydrolyzed has strong carcinogenicity, so that the health of human beings is directly threatened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a device for integrally removing ammonia nitrogen in wastewater. Ammonia nitrogen in the wastewater generated in the acid production by desulfurization and denitrification is treated, the water quality of the discharged water is improved, and the problems of dizziness and headache of field operators caused by overflow of ammonia gas at high temperature during sintering and stirring are solved.

The device for integrally removing ammonia nitrogen in wastewater comprises a box body, a solid chemical feeder, a liquid chemical feeder, a partition plate, a stirrer and a water production lift pump; the number of the partition plates is 3, and the box body is divided into 2 reaction zones, 1 flocculation zone and 1 water collecting zone through the 3 partition plates; the 2 reaction zones are respectively provided with a solid doser and a stirrer; the flocculation area is provided with a stirrer; the water collecting area is connected with a water producing lift pump;

the box body is provided with a water inlet which is opened on the side wall of the first reaction area in the box body, and a water outlet which is opened on the side wall of the water collecting area in the box body.

The box body is also provided with a pH on-line detector and NH₄-N online detection meters, level switches; wherein 2 pH on-line detectors are respectively arranged in the first reaction zone and the second reaction zone, and 2 NH₄The N online detection meters are respectively arranged at the water inlet and the water outlet, and the liquid level switch is arranged in the water collecting area.

And the partition plates are provided with water outlets.

The solid doser is provided with a dosing vibrator and a dosing powder pusher.

The liquid medicine adding device comprises a medicine adding pump and CaCl₂Dosers and PAC dosers.

The beneficial effects of the utility model are that, the utility model has simple structure, and can effectively treat NH in the wastewater₄N, part of COD and suspended matters in the wastewater can also be removed by flocculation reaction along with precipitation reaction, and the efficiency and stability are better in the wastewater treatment process, so that the effluent quality is greatly improved.

Description of the drawings:

FIG. 1 is a schematic diagram of an integrated device for removing ammonia nitrogen from wastewater.

FIG. 2 is an elevation view of an integrated apparatus for removing ammonia nitrogen from wastewater; corresponding part names are labeled in the drawings:

1. the device comprises a feed hopper, 2, a quantitative feeder, 3, a tank body, 4, a stirrer, 5, a guardrail, 6, an electric cabinet, a water inlet, b, a water outlet, c, a drain port, d, a water passing port, e, a water passing port, f, a water passing port, h, a PH instrument port, m and an overflow port.

FIG. 3 is a left side view of the device for integrally removing ammonia nitrogen in wastewater, wherein corresponding part names are marked in the attached drawings: b. water outlet, c, evacuation port, h and PH meter port.

FIG. 4 is a plan view of an integrated apparatus for removing ammonia nitrogen from wastewater; corresponding part names are labeled in the drawings: a. the device comprises a water inlet, a water outlet, a drain port, a water passing port, a water adding port, an alkali adding port, a water adding port, a PAC adding port, a pH meter port, an m overflow port, an n liquid level switch port.

The specific implementation mode is as follows:

the device for integrally removing ammonia nitrogen in wastewater comprises a box body, a solid dosing device, a liquid dosing device, a partition plate, a stirring device, matched electrical equipment and the like. The partition plates are arranged at 3 positions, and the box body is divided into 2 reaction zones, 1 flocculation zone and 1 water collecting zone; the 2 reaction zones are provided with a solid dosing device and a stirring device so as to fully dissolve the medicine and react; the flocculation zone is provided with a stirring device which is the same as the reaction zone so as to better generate flocculation reaction; the water collecting area is connected with a produced water lifting pump, and produced water after ammonia nitrogen removal by a chemical precipitation method is lifted by the lifting pump through the water collecting area and enters a sludge precipitator for sludge-water separation; the electrical equipment comprises pH on-line detection and NH₄N auxiliary facilities such as online detection, liquid level switches and distribution boxes.

Further, the box body is provided with a water inlet, a water outlet, an overflow port, a venting port, an alkali dosing port and a PAC dosing port; the box body is also provided with a pH meter and a liquid level switch interface.

Furthermore, the diameters of the water inlet, the water outlet, the overflow port, the emptying port, the alkali dosing port and the PAC dosing port are DN 50; the pipe diameters of the pH meter and the liquid level switch interface are DN 80.

Furthermore, the partition plate is provided with 3 water passing ports.

Furthermore, the size of the water outlet at the 3 positions is 100mm multiplied by 100 mm.

Furthermore, the upper plane of the box body is an operation platform, the movable load of an operator during working is considered, and the periphery of the box body is additionally provided with guardrails.

Furthermore, the solid medicine adding devices are all provided with medicine adding vibration devices anda medicine adding and powder pushing device, a device for adding sodium phosphate and magnesium chloride solid medicament into integrated ammonia nitrogen removal wastewater and adding NH₄-N is chemically reacted to produce a precipitate.

Furthermore, the stirring device consists of a motor, a stirring shaft and stirring blades, and is vertically fixed in the 2 reaction zones and the 1 flocculation zone.

Furthermore, the liquid medicine adding device comprises a medicine adding pump and CaCl₂A dosing device and a PAC dosing device.

Example (b):

the activated carbon adsorption process is adopted for sintering and pellet flue gas desulfurization and denitrification of certain domestic iron and steel enterprises, when the adsorption saturation is reached, the activated carbon adsorption process needs to enter an analytic tower for high-temperature analysis, and the analytic waste gas is sent to an acid making working section to prepare sulfuric acid. In order to ensure the purity of the sulfuric acid, the waste gas is washed and purified by dilute sulfuric acid before acid preparation, and NH in the waste gas₃HCl, heavy metal ions, dust suspension and part of SO₂Transferring into dilute acid, and obtaining the acid-containing wastewater discharged by a purification working section, namely the wastewater to be treated by the desulfurization and denitrification process. The wastewater has the characteristic of high ammonia nitrogen concentration (1732mg/L) due to high salt content (Cl)^-The concentration is 37286mg/L, Na⁺Ion concentration 31590mg/L), biological denitrification cannot be adopted. The utility model is adopted to treat ammonia nitrogen in the wastewater, and the treated water volume is 2m³/h。

The utility model provides a device of ammonia nitrogen in integration desorption waste water, including (1) box, (2) solid charge device, (3) liquid charge device, (4) baffle, (5) agitating unit, (6) supporting electrical equipment etc..

The box body is made of Q235-B steel, the thickness of an outer steel plate is 12mm, and the inner lining is made of glass fiber reinforced plastics for corrosion prevention. A water inlet, a water outlet, an overflow port, a venting port, an alkali dosing port, a PAC dosing port, a pH meter interface with the pipe diameter of DN80 and a liquid level switch interface are arranged, wherein the pipe diameter of the water inlet, the water outlet, the overflow port, the venting port, the alkali dosing port and the PAC dosing port is DN 50. In addition, the box body is divided into 2 reaction zones, 1 flocculation zone and 1 water collecting zone by 3 partition plates. The residence time of 2 reaction zones and 1 flocculation zone is 30 min. The water collecting area is connected with a produced water lifting pump, and produced water after ammonia nitrogen removal by a chemical precipitation method is lifted by the lifting pump through the water collecting area and enters the sludge precipitator for sludge-water separation.

A solid dosing device is respectively arranged above the 2 reaction areas, and the volume of a hopper of each solid dosing device is 0.2m³Each solid dosing device is provided with a 0.03KW dosing vibration motor and a 0.37KW dosing powder pushing motor, and the powder pushing motor is a variable frequency motor, so that the dosing quantity can be adjusted at will. The trisodium phosphate solid and the magnesium chloride solid are respectively sent to 2 reaction zones through a solid dosing device.

The liquid dosing device comprises a sodium hydroxide dosing system and a PAC dosing system, wherein a sodium hydroxide solution can be dosed to the reaction zone through a variable frequency dosing pump, and the PAC solution is dosed to the flocculation zone through the variable frequency dosing pump.

The sodium hydroxide adding system consists of 1 sodium hydroxide adding box, 2 sodium hydroxide adding pumps, 1 equipment rack, 2Y-shaped filters, 6 manual ball valves, 1 set of diaphragm pressure gauge, 1 set of matched valve and 1 set of magnetic turning plate liquid level meter. The sodium hydroxide dosing tank is made of PE (polyethylene), and has the diameter of 2200mm and the volume of 10m³(ii) a The sodium hydroxide dosing pump is an electromagnetic variable-frequency dosing pump, the flow rate is 3.8L/s, the pressure is 0.76MPA, the power is 0.044kW, and the rated voltage is 220V; the equipment rack is made of stainless steel and comprises a pipeline and accessories in the rack; the Y-shaped filter is made of PPR material, has the pipe diameter of DN20 and the pressure of 1.0MPa, and is used for the inlet of the dosing pump; the manual ball valve is made of PPR material, has the pipe diameter of DN20 and the pressure of 1.0MPa, and is used for the outlet of a dosing tank, a vent and the inlet and the outlet of a dosing pump; the diaphragm pressure gauge and the matched valve interface adopt NPT threads, the diameter of the dial plate is 60mm, and the measuring range is 0-2.5 bar; the magnetic turning plate liquid level meter can remotely transmit in situ, and the liquid level is interlocked with the start and stop of the dosing pump.

PAC medicine system comprises 1 PAC dosing tank, 2 PAC dosing pumps, 1 agitator, 1 equipment frame, 1Y type filter, 6 manual ball valves, 1 set of diaphragm gauge and supporting valve, 1 set of liquid level switch, 1 rotameter, 1 set of other control box of machine. The PAC dosing tank is made of PE material, the diameter is 1050mm, the height is 1350mm, and the volume is 1m³(ii) a The flow rate of the PAC dosing pump is 115L/h, the lift is 70m,the power is 0.25kW, and the rated voltage is 380V; the stirrer is made of carbon steel lining plastic, the power is 1.1kW, the rotating speed is 60r/min, the equipment rack is made of stainless steel, and the equipment rack comprises a rack inner pipeline and accessories; the Y-shaped filter is made of PPR material, has the pipe diameter of DN20 and the pressure of 1.0MPa, and is used for a liquid outlet of the dosing box; the manual ball valve is made of PPR material, has the pipe diameter of DN20 and the pressure of 1.0MPa, and is used for the outlet and the vent of the dosing tank and the inlet and the outlet of the dosing pump; the diaphragm pressure gauge and the matched valve interface adopt NPT threads, the diameter of the dial plate is 60mm, and the measuring range is 0-2.5 bar; the liquid level switch can remotely transmit on site, and the liquid level is interlocked with the start and stop of the PAC dosing pump; the measuring range of the rotor flowmeter is 0-200L/h; the machine side operation box adopts a stainless steel shell, and the protection grade is above IP 55.

The box body is divided into 2 reaction zones, 1 flocculation zone and 1 water collecting zone by the 3 partition plates. Each partition board is provided with 1 water passing hole, and the size of each water passing hole is 100mm multiplied by 100 mm.

Agitating unit comprises motor, (mixing) shaft and stirring leaf, and perpendicular fixation in 2 reaction zones and 1 flocculation district respectively can make solid medicament dissolve more thoroughly that makes chemical reaction go on simultaneously.

The matched electrical equipment comprises pH on-line detection and NH₄and-N auxiliary facilities such as online detection, liquid level switches, distribution boxes and the like.

Claims (5)

1. Device of ammonia nitrogen in integration desorption waste water, its characterized in that: comprises a box body, a solid doser, a liquid doser, a clapboard, a stirrer and a water production lift pump; the number of the partition plates is 3, and the box body is divided into 2 reaction zones, 1 flocculation zone and 1 water collecting zone through the 3 partition plates; the 2 reaction zones are respectively provided with a solid doser and a stirrer; the flocculation area is provided with a stirrer; the water collecting area is connected with a water producing lift pump;

the box body is provided with a water inlet which is opened on the side wall of the first reaction area in the box body, and a water outlet which is opened on the side wall of the water collecting area in the box body.

2. The integrated device for removing ammonia nitrogen in wastewater according to claim 1, which is characterized in that: the box body is also provided with a pH on-line detector and NH₄-N online detection meters, level switches; wherein 2 pH on-line detectors are respectively arranged in the first reaction area and the second reaction area, and 2 NH₄The N online detection meters are respectively arranged at the water inlet and the water outlet, and the liquid level switch is arranged in the water collecting area.

3. The integrated device for removing ammonia nitrogen in wastewater according to claim 1, which is characterized in that: and the partition plates are provided with water outlets.

4. The integrated device for removing ammonia nitrogen in wastewater according to claim 1, which is characterized in that: the solid doser is provided with a dosing vibrator and a dosing powder pusher.

5. The integrated device for removing ammonia nitrogen in wastewater according to claim 1, which is characterized in that: the liquid doser comprises a doser pump and CaCl₂Doser and PAC doser.

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