CN113292148A - Device for integrally removing ammonia nitrogen in wastewater - Google Patents

Device for integrally removing ammonia nitrogen in wastewater Download PDF

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Publication number
CN113292148A
CN113292148A CN202110699513.6A CN202110699513A CN113292148A CN 113292148 A CN113292148 A CN 113292148A CN 202110699513 A CN202110699513 A CN 202110699513A CN 113292148 A CN113292148 A CN 113292148A
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CN
China
Prior art keywords
water
ammonia nitrogen
box body
wastewater
stirrer
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Pending
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CN202110699513.6A
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Chinese (zh)
Inventor
李金锴
王东
马昕
寇彦德
刘华利
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Beijing Shougang International Engineering Technology Co Ltd
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Beijing Shougang International Engineering Technology Co Ltd
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Priority to CN202110699513.6A priority Critical patent/CN113292148A/en
Publication of CN113292148A publication Critical patent/CN113292148A/en
Pending legal-status Critical Current

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    • 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
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/14—NH3-N
    • 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
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

An integrated device for removing ammonia nitrogen in wastewater relates to the technical field of wastewater treatment. The device aims at solving the problem of ammonia nitrogen in the desulfurization and denitrification acid-making wastewater. 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 invention has simple structure and can effectively remove NH in the wastewater4N, partial COD and suspended matters, thereby greatly improving the effluent quality.

Description

Device for integrally removing ammonia nitrogen in wastewater
Technical Field
The invention 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, which is a common water pollutant, mainly exists in water in the form 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 nitrifying bacteria, the nitrate can induce the methemoglobinemia of infants, and nitrosamine generated after the nitrite is hydrolyzed has strong carcinogenicity, and directly threatens the health of human beings.
Disclosure of Invention
The invention aims to provide a device for integrally removing ammonia nitrogen in wastewater. The ammonia nitrogen in the wastewater from 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 the 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 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.
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 invention has the advantages that the structure is simple, and NH in wastewater can be effectively treated4And N, 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 in wastewater.
FIG. 2 is a vertical 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 meter port, m 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 vent 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 vent 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 outlets.
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.
Further, the solid chemical adding devices are respectively provided with a chemical adding vibration device and a chemical adding powder pushing device, and the solid chemical agents of sodium phosphate and magnesium chloride are added into the device for integrally removing ammonia nitrogen in the wastewater and are in contact with NH4-N is chemically reacted to produce a precipitate.
Further, the stirring device consists of a motor, a stirring shaft and stirring blades, and is vertically fixed in the 2 reaction zones and 1 flocculation zone of the patent claim 1.
Further, the liquid medicine adding device comprises a medicine adding pump and CaCl2A dosing device and a PAC dosing device.
Example (b):
the sintering and pelletizing flue gas desulfurization and denitration of certain domestic iron and steel enterprises adopt an activated carbon adsorption process, when the adsorption saturation is reached, the adsorption is carried out in an analytic tower at high temperature, 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 from the purification section, namely the wastewater required to be treated by the desulfurization and denitrification process. The wastewater has high ammonia nitrogen concentration (1732mg/L), and contains high salt content (Cl)-The concentration is 37286mg/L, Na+Ion concentration 31590mg/L), biological denitrification cannot be adopted. The invention is adopted to treat ammonia nitrogen in the wastewater, and the treated water volume is 2m3/h。
The invention provides an integrated device for removing ammonia nitrogen in wastewater, which comprises a box body (1), a solid dosing device (2), a liquid dosing device (3), a partition plate (4), a stirring device (5), matched electrical equipment and the like.
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. The device is provided with a water inlet, a water outlet, an overflow port, a vent port, an alkali dosing port, a PAC dosing port with the pipe diameter of DN50, a pH meter interface with the pipe diameter of DN80 and a liquid level switch interface. 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 chemical adding device, wherein the solid chemical adding devices are respectively arranged above the 2 reaction areas, and the volume of a hopper of each solid chemical adding 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. Phosphoric acid tris (III)The sodium solid and the magnesium chloride solid are respectively sent to 2 reaction zones by 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 a pipe diameter of DN20 and a pressure of 1.0MPa, and is used for an inlet of a 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 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 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 pressure 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, and has a diameter of 1050mm, a height of 1350mm and a volume of 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 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; manual ball valve adopt PPR material, the pipe diameter is DN20, pressThe force is 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 more than 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 NH4N auxiliary facilities such as online detection, liquid level switches and distribution boxes.

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 detectors are respectively arranged at the water inlet and the water outlet, and the liquid level is openedThe valve is installed 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 medicine adding device comprises a medicine adding pump and CaCl2Dosers and PAC dosers.
CN202110699513.6A 2021-06-23 2021-06-23 Device for integrally removing ammonia nitrogen in wastewater Pending CN113292148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110699513.6A CN113292148A (en) 2021-06-23 2021-06-23 Device for integrally removing ammonia nitrogen in wastewater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110699513.6A CN113292148A (en) 2021-06-23 2021-06-23 Device for integrally removing ammonia nitrogen in wastewater

Publications (1)

Publication Number Publication Date
CN113292148A true CN113292148A (en) 2021-08-24

Family

ID=77329435

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110699513.6A Pending CN113292148A (en) 2021-06-23 2021-06-23 Device for integrally removing ammonia nitrogen in wastewater

Country Status (1)

Country Link
CN (1) CN113292148A (en)

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