CN104743746A - Method and device for treating wastewater of iron oxide red - Google Patents
Method and device for treating wastewater of iron oxide red Download PDFInfo
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- CN104743746A CN104743746A CN201510113019.1A CN201510113019A CN104743746A CN 104743746 A CN104743746 A CN 104743746A CN 201510113019 A CN201510113019 A CN 201510113019A CN 104743746 A CN104743746 A CN 104743746A
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Abstract
The invention relates to a method and a device for treating wastewater of iron oxide red. The device comprises a wastewater adjusting pond, an aeration settling pond, an ammonia absorbing pond, a multi-stage adsorbing pond, a desorbing pond, an anoxic anaerobic reaction pond, a baffle type aeration biological filtering pond and a clear water pond; the aeration settling pond comprises an aerating area and a settling area; sulfuric acid solution is added in the ammonia absorbing pond; the multi-stage adsorbing pond is provided with a plurality of adsorbing areas, and adsorbing agent is filled in every adsorbing area; the anoxic anaerobic reaction pond comprises an aerobic section, an anoxic section and an anaerobic section partitioned by a baffle plate; the baffle type aeration biological filtering pond comprises a lower flow area, an upper flow area and a sludge area; the wastewater enters the aeration settling pond through the adjusting pond, the ammonia is blown and absorbed to generate ammonium sulfate for recycling, then the wastewater enters the multi-stage adsorbing pond, the pollutant is adsorbed and desorbed, and then the wastewater enters the anoxic anaerobic reaction pond and the baffle type aeration biological filtering pond to carry out anoxic reaction, anaerobic and aerobiotic reactions and then the wastewater is recycled.
Description
Technical field
The present invention relates to technical field of waste water processing, be specifically related to a kind of red iron oxide method of wastewater treatment and device.
Background technology
Red iron oxide is a kind of important inorganic industrial raw material, and its production technique is simple, and cost is lower, and has the good characteristics such as nontoxic, alkaline-resisting, high temperature resistant, fast light, is therefore widely used in the industries such as building materials, coating, makeup, electronics, chemical industry.Conventional red iron oxide production technique mainly comprises dry method and wet method two kinds, and because wet production red iron oxide granularity is tiny, product purity is high, therefore generally adopts wet processing at present.In wet processing production process, a large amount of acid waste water containing ferrous ion can be produced, generally, often produce one ton of red iron oxide, can discharge about 15-20 ton waste water, its main source is the aqueous solution isolating finished product red iron oxide in reaction container and the waste water discharged after washing red iron oxide product.In this type of waste water, the average content of iron ion is between 0.05%-0.35%, and pH value is about 3-5, and in acid, chroma in waste water is up to more than 400 times, and ammonia nitrogen concentration is high.Traditional physical chemistry and biochemical processing process is adopted to process red iron oxide waste water, be difficult to reach efficient, energy-conservation, the demand such as low cost and environmental protection, therefore, based on conventional physical chemistry and biochemical processing process, the research and development carrying out a new combined process improving or innovate have become the focus of red iron oxide wastewater treatment research.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve the difficult problem in above-mentioned red iron oxide wastewater treatment, the invention provides a kind of red iron oxide method of wastewater treatment and device.
The technical solution adopted for the present invention to solve the technical problems is: a kind of red iron oxide wastewater treatment equipment, comprises wastewater equalization pond, aerated precipitation tank, ammonia cuvette, multi-stage absorption pond, desorption pool, anoxic anaerobic reation pool, baffling aeration biological filter chamber and clean water basin.
Described wastewater equalization pond comprises water inlet pipe and rising pipe, for regulating water quality and the water yield of red iron oxide waste water.
Described aerated precipitation tank comprises aeration zone and settling region; Water inlet pipe is provided with bottom described aeration zone, water inlet pipe opening upwards, top is provided with conical water distribution baffle plate, can make to be uniformly distributed in aerated precipitation tank into water, water inlet pipe is connected with water pump, be provided with denitrification additive before pump intake and add metering system, described denitrification additive is counted in mass ratio and is mixed by the polyethylene polyamines salt of 10-50% butanone, 10-50%, the hydroxyethyl ether cellulose of 10-50% and the clorox of 10-60%, and the add-on of denitrification additive is 10-40ppm; Between denitrification additive interpolation metering system and pump intake, be connected with denitrification additive measure adding tube, the middle and lower part of aeration zone is provided with pH meter and alkali lye adds metering system, bottom aeration zone, water inlet pipe bottom is provided with aerating system, aerating system is provided with aeration tube, and aeration tube is connected with the blower fan outside aerated precipitation tank; Baffle plate is provided with in described settling region, the inwall of this baffle plate and settling tank forms the waste water runner entering settling region as waste water, the exit of settling region is provided with triphase separator, the outlet top of settling region is provided with overfalling weir, the tapered structure of settling region bottom design, is provided with mud valve bottom settling region; The top of aerated precipitation tank is provided with conical upper cover, and the top of upper cover is provided with ammonia collection tube, and ammonia collection tube is connected with the fan for discharging ammonia, and ammonia collection tube is communicated with ammonia cuvette; The overfalling weir of aerated precipitation tank connects rising pipe, and rising pipe connects the water inlet pipe in multi-stage absorption pond.
Be added with the sulphuric acid soln that mass concentration is 2-5% in described ammonia cuvette, after absorbing ammonia, generate ammonium sulfate reuse.
Described multi-stage absorption pond is distributed with multiple adsorption zone successively from water-in to water outlet, is filled with sorbent material in each adsorption zone, and the particle diameter from water-in to water outlet sorbent material diminishes gradually; Described sorbent material is by SiO by silicon-containing compound, aluminum contained compound, alkali and water
2/ A1
2o
3=1.5-2, SiO
2/ OH
-=6.0-1.0, H
2o/OH
-the ratio mixing of=40-100, hydro-thermal reaction 6h at 90 DEG C, crystallize out, the filtration of taking-up crystal product, washing, drying obtain, and described silicon-containing compound comprises water glass or silicon sol; Aluminum contained compound is as hydrated aluminum oxide; Alkali comprises sodium hydroxide or potassium hydroxide; The water outlet in multi-stage absorption pond connects the water-in of anoxic anaerobic reation pool.
One end of described desorption pool is communicated with multi-stage absorption pond, and the other end is communicated with aeration tank, can carry out desorption and regeneration recycle sorbent material in multi-stage absorption pond.
Described anoxic anaerobic reation pool comprises the double oxygen section, anoxic section and the anaerobism section that are separated into by traverse baffle, described double oxygen section head end is provided with the water inlet pipe for feeding waste water, oxygen section end of holding concurrently is communicated with anoxic section head end, anoxic section end is communicated with anaerobism section head end, the bottom of described anoxic section and anaerobism section water inlet side traverse baffle is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section end is provided with triphase separator and overfalling weir, and overfalling weir connects rising pipe; Described double oxygen section, anoxic section and the tapered structure of anaerobism section bottom design, pyramidal structure connects mud discharging valve; The double oxygen section of described anoxic anaerobic reation pool, anoxic section and anaerobism section upper cover design coning structure, conical structure top is all provided with independently methane waste product effuser.Water after the process of anoxic anaerobic reation pool enters the water inlet pipe of baffling aeration biological filter chamber through overflow weir.
Described baffling aeration biological filter chamber middle and upper part is cylindrical, bottom is conical structure, comprises lower current area, ascending zone and mud district; Described lower current area is positioned at the middle part of the cylindrical structural of baffling aeration biological filter chamber, for cylindrical structural, lower current area top is provided with water inlet pipe and water distributor, filler is provided with in the middle part of lower current area, lower current area bottom is provided with aeration tube, the bottom of described lower current area is provided with traverse baffle, and the longitudinal section of described traverse baffle is horn-like; Described ascending zone is positioned at the periphery of lower current area, the top of traverse baffle, and be provided with filler in the middle part of ascending zone, bottom is provided with aeration tube, and the exit on ascending zone top is provided with overfalling weir; Described mud district is positioned at the bottom of the bottom of baffling aeration biological filter chamber, lower current area and ascending zone, and the bottom in mud district is provided with mud discharging valve.
Water after baffling aeration biological filter chamber process enters reuse after clean water basin through overflow weir.
Adopt above-mentioned red iron oxide wastewater treatment equipment to carry out a method for wastewater treatment, there are following steps:
1. red iron oxide waste water enters wastewater equalization pond regulating water quality and the water yield by water inlet pipe.
2. the red iron oxide waste water adding denitrification additive is put into aerated precipitation tank, regulate its pH value to be 9-11, waste water carries out Air Exposure in aeration zone, and waste water free ammonia gas is drained into ammonia cuvette, reuse after absorbing generation ammonium sulfate; Waste water after aeration enters the waste water runner of settling region, the Fe in waste water
2+, Fe
3+produce Fe (OH) in the basic conditions
2, Fe (OH)
3throw out, the triphase separator of settling region realizes solid-liquid-gas and is separated; Fe (OH)
2, Fe (OH)
3solid sediment sinks to the bottom of aerated precipitation tank settling region under gravity, is discharged by the mud valve of bottom; Waste water enters multi-stage absorption pond by overfalling weir, rising pipe and pipe connecting.
3. after waste water enters multi-stage absorption pond, in waste water, ammonia nitrogen is by adsorbent, it is that the NaCl of 0.5mol/L, pH=11-12 or the desorption pool of sodium bicarbonate or sodium citrate solution carry out desorption and regeneration that the saturated rear taking-up of adsorbent is put into containing concentration, and the backflow of desorption and regeneration liquid enters aerated precipitation tank; Waste water after adsorption treatment enters anoxic anaerobic reation pool.
4. waste water enters the bottom of anoxic anaerobic reation pool by the hold concurrently water inlet pipe of oxygen section of anoxic anaerobic reation pool; Waste water advances up and down along traverse baffle after entering anoxic anaerobic reation pool, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section, anoxic section and anaerobism section, mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the settlement action of the barrier effect of traverse baffle and mud self makes again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with waste water.Pollutent in waste water is hydrolyzed to organic acid by the heterotrophic bacterium of the amphimicrobe of oxygen section, anoxic section and the anaerobism section held concurrently, and make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter.
5. the waste water after anaerobic reaction realizes the separation of mud, water, methane gas at the triphase separator that anaerobism section end is provided with, and mud sinks to the bottom of anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve of bottom; The methane waste product that anoxic anaerobic reation pool produces collects discharge by reaction tank top effuser; Waste water after process enters the water inlet pipe of baffling aeration biological filter chamber by overfalling weir, rising pipe and pipe connecting.
6. waste water enters the lower current area of baffling aeration biological filter chamber by water inlet pipe, water distributor, the air that aeration tube produces and waste water cross generation biochemical reaction in filler, filler filters waste water simultaneously, waste water is by entering ascending zone after traverse baffle, biochemical reaction is there is in filler, filler filters waste water simultaneously, the mud that lower current area and ascending zone produce sinks to mud district, emitted by the mud discharging valve bottom mud district, the water after baffling aeration biological filter chamber process enters reuse after clean water basin by overfalling weir.
The invention has the beneficial effects as follows: the present invention adopts the method adding alkali neutralization to process, the pH value of waste water can be improved, ferrous ion in waste water and iron ion can not only be precipitated with the form of oxyhydroxide, reach the object removing iron ion, recycle this iron mud as seed production red iron oxide, for opening up new approach containing the recycling of ferro element in ferrous ion acid waste water; Carry out stripping to ammonia under utilizing alkaline condition, add denitrification additive and improve stripping efficiency, the Ammonia recovery that stripping goes out utilizes, and avoids secondary pollution, carries out desorption and regeneration and recycle, also reduce cost to sorbent material simultaneously.System and device runs continuously, the process of extensive high density red iron oxide waste water in being applicable to.Sewage lifting is less, and sewage treatment unit is by flow by gravity, and working cost is very low.System apparatus arrangements is simple, it is easy to operate to install.Achieve reusing sewage simultaneously, reach the target of sewage zero-discharge, also save water resources.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of embodiment of the present invention aerated precipitation tank.
In Fig. 1: 1. aerated precipitation tank, 1-1. aeration zone, 1-2. settling region, 1-3. water inlet pipe, 1-4. water distribution baffle plate, 1-5. denitrification additive adds metering system, and 1-6.pH takes into account alkali lye and adds metering system, 1-7. aerating system, 1-8. baffle plate, 1-9. aerated precipitation tank triphase separator, 1-10. aerated precipitation tank overfalling weir, 1-11. mud valve, 1-12. ammonia collection tube.
Fig. 2 is the structural representation of embodiment of the present invention anoxic anaerobic reation pool.
In Fig. 2: 2. anoxic anaerobic reation pool, 2-1. traverse baffle, 2-2. holds concurrently oxygen section, 2-3. anoxic section, 2-4. anaerobism section, 2-5. anoxic anaerobic reation pool water inlet pipe, 2-6. anoxic anaerobic reation pool triphase separator, 2-7. anoxic anaerobic reation pool overfalling weir, 2-8. mud discharging valve, 2-9. upper cover, 2-10. effuser.
Fig. 3 is the structural representation of embodiment of the present invention baffling aeration biological filter chamber.
In Fig. 3: 3. baffling aeration biological filter chamber, 3-1. lower current area, 3-2. ascending zone, 3-3. mud district, 3-4. baffling aeration biological filter chamber water inlet pipe, 3-5. baffling aeration biological filter chamber water distributor, 3-6. lower current area filler, 3-7. aeration tube, 3-8. traverse baffle, 3-9. ascending zone filler, 3-10. baffling aeration biological filter chamber overfalling weir, 3-11. mud discharging valve.
Fig. 4 is the process flow sheet of the embodiment of the present invention.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Embodiment
As shown in Figure 1 to 4, a kind of red iron oxide method of wastewater treatment of the present invention and device, comprise wastewater equalization pond, aerated precipitation tank 1, ammonia cuvette, multi-stage absorption pond, desorption pool, anoxic anaerobic reation pool 2, baffling aeration biological filter chamber 3 and clean water basin.
Described wastewater equalization pond comprises water inlet pipe and rising pipe, for regulating water quality and the water yield of red iron oxide waste water.
Described aerated precipitation tank comprises aeration zone 1-1 and settling region 1-2; Water inlet pipe 1-3 is provided with bottom described aeration zone, water inlet pipe opening upwards, top is provided with conical water distribution baffle plate 1-4, can make to be uniformly distributed in aerated precipitation tank into water, water inlet pipe 1-3 is connected with water pump, be provided with denitrification additive before pump intake and add metering system 1-5, described denitrification additive is mixed by the polyethylene polyamines salt of 10-50% butanone, 10-50%, the hydroxyethyl ether cellulose of 10-50% and the clorox of 10-60% in mass ratio, and the add-on of denitrification additive is 10-40ppm; Between denitrification additive interpolation metering system and pump intake, be connected with denitrification additive measure adding tube, the middle and lower part of aeration zone is provided with pH meter and alkali lye adds metering system 1-6, bottom aeration zone, water inlet pipe bottom is provided with aerating system 1-7, aerating system is provided with aeration tube, and aeration tube is connected with the blower fan outside aerated precipitation tank; Baffle plate 1-8 is provided with in described settling region, the inwall of this baffle plate and settling tank forms the waste water runner entering settling region as waste water, the exit of settling region is provided with triphase separator 1-9, the outlet top of settling region is provided with overfalling weir 1-10, the tapered structure of settling region bottom design, is provided with mud valve 1-11 bottom settling region; The top of aerated precipitation tank is provided with conical upper cover, and the top of upper cover is provided with ammonia collection tube 1-12, and ammonia collection tube is connected with the fan for discharging ammonia, and ammonia collection tube is communicated with ammonia cuvette; The overfalling weir 1-10 of aerated precipitation tank connects rising pipe, and rising pipe connects the water inlet pipe in multi-stage absorption pond.
Be added with the sulphuric acid soln that mass concentration is 2-5% in described ammonia cuvette, after absorbing ammonia, generate ammonium sulfate reuse.
Described multi-stage absorption pond is distributed with multiple adsorption zone successively from water-in to water outlet, is filled with sorbent material in each adsorption zone, and the particle diameter from water-in to water outlet sorbent material diminishes gradually; Described sorbent material is by SiO by silicon-containing compound, aluminum contained compound, alkali and water
2/ A1
2o
3=1.5-2, SiO
2/ OH
-=6.0-1.0, H
2o/OH
-the ratio mixing of=40-100, hydro-thermal reaction 6h at 90 DEG C, crystallize out, the filtration of taking-up crystal product, washing, drying obtain, described silicon-containing compound comprises water glass or silicon sol, and aluminum contained compound is as hydrated aluminum oxide, and alkali comprises sodium hydroxide or potassium hydroxide; The water outlet in multi-stage absorption pond connects the water-in of anoxic anaerobic reation pool.
Described desorption pool one end is communicated with multi-stage absorption pond, and the other end is communicated with aerated precipitation tank, can carry out desorption and regeneration recycle sorbent material in multi-stage absorption pond.
Described anoxic anaerobic reation pool 2 comprises the double oxygen section 2-2, anoxic section 2-3 and the anaerobism section 2-4 that are separated into by traverse baffle 2-1, described double oxygen section 2-2 head end is provided with the water inlet pipe 2-5 for feeding waste water, oxygen section end of holding concurrently is communicated with anoxic section head end, anoxic section end is communicated with anaerobism section head end, the bottom of described anoxic section and anaerobism section water inlet side traverse baffle is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section end is provided with triphase separator 2-6 and overfalling weir 2-7, and overfalling weir 2-7 connects rising pipe; Described double oxygen section, anoxic section and the tapered structure of anaerobism section bottom design, pyramidal structure connects mud discharging valve 2-8; The double oxygen section of described anoxic anaerobic reation pool, anoxic section and anaerobism section upper cover 2-9 are designed to conical structure, and conical structure top is all provided with independently methane waste product effuser 2-10.Water after the process of anoxic anaerobic reation pool enters the water inlet pipe 3-4 of baffling aeration biological filter chamber through overflow weir.
Described baffling aeration biological filter chamber 3 middle and upper part is cylindrical, bottom is conical structure, comprises lower current area 3-1, ascending zone 3-2 and mud district 3-3; Described lower current area 3-1 is positioned at the middle part of the cylindrical structural of baffling aeration biological filter chamber, for cylindrical structural, lower current area top is provided with water inlet pipe 3-4 and water distributor 3-5, filler 3-6 is provided with in the middle part of lower current area, lower current area bottom is provided with aeration tube 3-7, the bottom of described lower current area is provided with traverse baffle 3-8, and the longitudinal section of described traverse baffle is horn-like; Described ascending zone 3-2 is positioned at the periphery of lower current area 3-1, the top of traverse baffle 3-8, and be provided with filler 3-9 in the middle part of ascending zone, bottom is provided with aeration tube, and the exit on ascending zone top is provided with overfalling weir 3-10; Described mud district 3-3 is positioned at the bottom of the bottom of baffling aeration biological filter chamber, lower current area and ascending zone, and the bottom in mud district is provided with mud discharging valve 3-11.
Water after baffling aeration biological filter chamber process enters reuse after clean water basin through overflow weir.
Adopt above-mentioned red iron oxide wastewater treatment equipment to carry out a method for wastewater treatment, there are following steps:
1. red iron oxide waste water enters wastewater equalization pond regulating water quality and the water yield by water inlet pipe.
2. the red iron oxide waste water adding denitrification additive is put into aerated precipitation tank 1, regulate its pH value to be 9-11, waste water carries out Air Exposure in the 1-1 of aeration zone, and waste water free ammonia gas is drained into ammonia cuvette, reuse after absorbing generation ammonium sulfate; Waste water after aeration enters the waste water runner of settling region 1-2, the Fe in waste water
2+, Fe
3+produce Fe (OH) in the basic conditions
2, Fe (OH)
3throw out, the triphase separator 1-9 of settling region 1-2 realizes solid-liquid-gas and is separated, Fe (OH)
2, Fe (OH)
3solid sediment sinks to the bottom of aerated precipitation tank settling region 1-2 under gravity, is discharged by the mud valve 1-11 of bottom; Waste water enters multi-stage absorption pond by overfalling weir 1-10, rising pipe and pipe connecting.
3. after waste water enters multi-stage absorption pond, in waste water, ammonia nitrogen is by adsorbent, it is that the NaCl of 0.5mol/L, pH=11-12 or the desorption pool of sodium bicarbonate or sodium citrate solution carry out desorption and regeneration that the saturated rear taking-up of adsorbent is put into containing concentration, and the backflow of desorption and regeneration liquid enters aeration tank; Waste water after adsorption treatment enters anoxic anaerobic reation pool 2.
4. waste water enters the bottom of anoxic anaerobic reation pool by the hold concurrently water inlet pipe 2-5 of oxygen section of anoxic anaerobic reation pool; Advance up and down along traverse baffle 2-1 after waste water enters anoxic anaerobic reation pool 2, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section 2-2, anoxic section 2-3 and anaerobism section 2-4, mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the settlement action of the barrier effect of traverse baffle 2-1 and mud self makes again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with waste water.Pollutent in waste water is hydrolyzed to organic acid by the heterotrophic bacterium of the amphimicrobe of oxygen section, anoxic section and the anaerobism section held concurrently, and make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter.
5. the waste water after anaerobic reaction realizes the separation of mud, water, methane gas at the triphase separator 2-6 that anaerobism section end is provided with, and mud sinks to the bottom of anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve 2-8 of bottom; The methane waste product that anoxic anaerobic reation pool produces collects discharge by reaction tank top effuser 2-10; Waste water after process is communicated with the water inlet pipe 3-4 of baffling aeration biological filter chamber by overfalling weir 2-7, rising pipe with pipe connecting.
6. waste water passes through water inlet pipe, water distributor enters the lower current area 3-1 of baffling aeration biological filter chamber, the air that aeration tube produces and waste water cross generation biochemical reaction in filler, filler filters waste water simultaneously, waste water is by entering ascending zone 3-2 after traverse baffle 3-8, biochemical reaction is there is in filler, filler filters waste water simultaneously, the mud that lower current area 3-1 and ascending zone 3-2 produces sinks to mud district, emitted by the mud discharging valve 3-11 bottom mud district, water after baffling aeration biological filter chamber 3 processes enters reuse after clean water basin by overfalling weir 3-10.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff can carry out various change and amendment completely in the scope not departing from this invention technological thought.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (2)
1. a red iron oxide wastewater treatment equipment, is characterized in that: comprise wastewater equalization pond, aerated precipitation tank (1), ammonia cuvette, multi-stage absorption pond, desorption pool, anoxic anaerobic reation pool (2), baffling aeration biological filter chamber (3) and clean water basin;
Described wastewater equalization pond comprises water inlet pipe and rising pipe, for regulating water quality and the water yield of red iron oxide waste water;
Described aerated precipitation tank comprises aeration zone (1-1) and settling region (1-2); Water inlet pipe (1-3) is provided with bottom described aeration zone, water inlet pipe opening upwards, top is provided with conical water distribution baffle plate (1-4), can make to be uniformly distributed in aerated precipitation tank into water, water inlet pipe (1-3) is connected with water pump, be provided with denitrification additive before pump intake and add metering system (1-5), described denitrification additive is mixed by the polyethylene polyamines salt of 10-50% butanone, 10-50%, the hydroxyethyl ether cellulose of 10-50% and the clorox of 10-60% in mass ratio, and the add-on of denitrification additive is 10-40ppm; Between denitrification additive interpolation metering system and pump intake, be connected with denitrification additive measure adding tube, the middle and lower part of aeration zone is provided with pH meter and alkali lye adds metering system (1-6), bottom aeration zone, water inlet pipe bottom is provided with aerating system (1-7), aerating system is provided with aeration tube, and aeration tube is connected with the blower fan outside aerated precipitation tank; Baffle plate (1-8) is provided with in described settling region, the inwall of this baffle plate and settling tank forms the waste water runner entering settling region as waste water, the exit of settling region is provided with triphase separator (1-9), the outlet top of settling region is provided with overfalling weir (1-10), the tapered structure of settling region bottom design, is provided with mud valve (1-11) bottom settling region; The top of aerated precipitation tank is provided with conical upper cover, and the top of upper cover is provided with ammonia collection tube (1-12), and ammonia collection tube is connected with the fan for discharging ammonia, and ammonia collection tube is communicated with ammonia cuvette; The overfalling weir (1-10) of aerated precipitation tank connects rising pipe, and rising pipe connects the water inlet pipe in multi-stage absorption pond;
Be added with the sulphuric acid soln that mass concentration is 2-5% in described ammonia cuvette, after absorbing ammonia, generate ammonium sulfate reuse;
Described multi-stage absorption pond is distributed with multiple adsorption zone successively from water-in to water outlet, is filled with sorbent material in each adsorption zone, and the particle diameter from water-in to water outlet sorbent material diminishes gradually; Described sorbent material is by SiO by silicon-containing compound, aluminum contained compound, alkali and water
2/ A1
2o
3=1.5-2, SiO
2/ OH
-=6.0-1.0, H
20/OH
-the ratio mixing of=40-100, hydro-thermal reaction 6h at 90 DEG C, crystallize out, the filtration of taking-up crystal product, washing, drying obtain, described silicon-containing compound comprises water glass or silicon sol, and aluminum contained compound is as hydrated aluminum oxide, and alkali comprises sodium hydroxide or potassium hydroxide; The water outlet in multi-stage absorption pond connects the water-in of anoxic anaerobic reation pool;
Described desorption pool one end is communicated with multi-stage absorption pond, and the other end is communicated with aerated precipitation tank, can carry out desorption and regeneration recycle sorbent material in multi-stage absorption pond;
Described anoxic anaerobic reation pool (2) comprise be separated into by traverse baffle (2-1) double oxygen section (2-2), anoxic section (2-3) and anaerobism section (2-4), described double oxygen section (2-2) head end is provided with the water inlet pipe (2-5) for feeding waste water, oxygen section end of holding concurrently is communicated with anoxic section head end, anoxic section end is communicated with anaerobism section head end, the bottom of described anoxic section and anaerobism section water inlet side traverse baffle is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section end is provided with triphase separator (2-6) and overfalling weir (2-7), and overfalling weir (2-7) connects rising pipe; Described double oxygen section, anoxic section and the tapered structure of anaerobism section bottom design, pyramidal structure connects mud discharging valve (2-8); The double oxygen section of described anoxic anaerobic reation pool, anoxic section and anaerobism section upper cover (2-9) are designed to conical structure, and conical structure top is all provided with methane waste product effuser (2-10); Water after the process of anoxic anaerobic reation pool enters the water inlet pipe (3-4) of baffling aeration biological filter chamber through overflow weir;
Described baffling aeration biological filter chamber (3) middle and upper part is cylindrical, bottom is conical structure, comprises lower current area (3-1), ascending zone (3-2) and mud district (3-3); Described lower current area (3-1) is positioned at the middle part of the cylindrical structural of baffling aeration biological filter chamber, for cylindrical structural, lower current area top is provided with water inlet pipe (3-4) and water distributor (3-5), filler (3-6) is provided with in the middle part of lower current area, lower current area bottom is provided with aeration tube (3-7), the bottom of described lower current area is provided with traverse baffle (3-8), and the longitudinal section of described traverse baffle is horn-like; Described ascending zone (3-2) is positioned at the periphery of lower current area (3-1), the top of traverse baffle (3-8), filler (3-9) is provided with in the middle part of ascending zone, bottom is provided with aeration tube, and the exit on ascending zone top is provided with overfalling weir (3-10); Described mud district (3-3) is positioned at the bottom of the bottom of baffling aeration biological filter chamber, lower current area and ascending zone, and the bottom in mud district is provided with mud discharging valve (3-11);
Water after baffling aeration biological filter chamber process enters reuse after clean water basin through overflow weir.
2. adopt red iron oxide wastewater treatment equipment as claimed in claim 1 to carry out a method for wastewater treatment, there are following steps:
1. red iron oxide waste water enters wastewater equalization pond regulating water quality and the water yield by water inlet pipe;
2. the red iron oxide waste water adding denitrification additive is put into aerated precipitation tank (1), its pH value is regulated to be 9-11, waste water carries out Air Exposure in aeration zone (1-1), and waste water free ammonia gas is drained into ammonia cuvette, reuse after absorbing generation ammonium sulfate; Waste water after aeration enters the waste water runner of settling region (1-2), the Fe in waste water
2+, Fe
3+produce Fe (OH) in the basic conditions
2, Fe (OH)
3throw out, the triphase separator (1-9) of settling region (1-2) realizes solid-liquid-gas and is separated, Fe (OH)
2, Fe (OH)
3solid sediment sinks to the bottom of aerated precipitation tank settling region (1-2) under gravity, is discharged by the mud valve (1-11) of bottom; Waste water enters multi-stage absorption pond by overfalling weir (1-10), rising pipe and pipe connecting;
3. after waste water enters multi-stage absorption pond, in waste water, ammonia nitrogen is by adsorbent, it is that the NaCl of 0.5mol/L, pH=11-12 or the desorption pool of sodium bicarbonate or sodium citrate solution carry out desorption and regeneration that the saturated rear taking-up of adsorbent is put into containing concentration, and the backflow of desorption and regeneration liquid enters aerated precipitation tank; Waste water after adsorption treatment enters anoxic anaerobic reation pool (2);
4. waste water enters the bottom of anoxic anaerobic reation pool by the hold concurrently water inlet pipe (2-5) of oxygen section of anoxic anaerobic reation pool; Advance up and down along traverse baffle (2-1) after waste water enters anoxic anaerobic reation pool (2), successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section (2-2), anoxic section (2-3) and anaerobism section (2-4), mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the barrier effect of traverse baffle (2-1) and the settlement action of mud self make again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with waste water; Pollutent in waste water is hydrolyzed to organic acid by the heterotrophic bacterium of the amphimicrobe of oxygen section, anoxic section and the anaerobism section held concurrently, and make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter;
5. the waste water after anaerobic reaction realizes the separation of mud, water, methane gas at the triphase separator (2-6) that anaerobism section end is provided with, mud sinks to the bottom of anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve (2-8) of bottom; The methane waste product that anoxic anaerobic reation pool produces collects discharge by reaction tank top effuser (2-10); Waste water after process enters the water inlet pipe (3-4) of baffling aeration biological filter chamber by overfalling weir (2-7), rising pipe and pipe connecting;
6. waste water passes through water inlet pipe, water distributor enters the lower current area (3-1) of baffling aeration biological filter chamber, the air that aeration tube produces and waste water cross generation biochemical reaction in filler, filler filters waste water simultaneously, waste water enters ascending zone (3-2) by after traverse baffle (3-8), biochemical reaction is there is in filler, filler filters waste water simultaneously, the mud that lower current area (3-1) and ascending zone (3-2) produce sinks to mud district, emitted by the mud discharging valve (3-11) bottom mud district, water after baffling aeration biological filter chamber (3) process enters reuse after clean water basin by overfalling weir (3-10).
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| CN105060613A (en) * | 2015-07-17 | 2015-11-18 | 常州大学 | High-nitrogen and high-phosphorus pharmaceutical wastewater treatment system |
| CN105645682A (en) * | 2016-01-11 | 2016-06-08 | 常州大学 | Steel hydrochloric acid pickling wastewater treatment device |
| CN108358391A (en) * | 2018-03-12 | 2018-08-03 | 常州大学 | Acetylene purification wastewater treatment equipment |
| CN109502654A (en) * | 2018-12-18 | 2019-03-22 | 湖南三环颜料有限公司 | A kind of iron oxide red seed crystal high pressure manufacture craft |
| CN113526800A (en) * | 2021-08-04 | 2021-10-22 | 九江南大环保创新中心有限公司 | Be used for biochemical tail water to carry mark transformation degree of depth biological filter for denitrogenation |
| CN113830869A (en) * | 2021-09-30 | 2021-12-24 | 中国华能集团清洁能源技术研究院有限公司 | Baffling type gas-liquid reaction system for treating concentrated alkali liquor and working method thereof |
| CN115367959A (en) * | 2022-08-22 | 2022-11-22 | 石家庄高新技术产业开发区供水排水公司 | Wastewater treatment device for ozone/hydrogen peroxide synergistic oxidation coupling biochemical tank |
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| CN105060613A (en) * | 2015-07-17 | 2015-11-18 | 常州大学 | High-nitrogen and high-phosphorus pharmaceutical wastewater treatment system |
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| CN113830869B (en) * | 2021-09-30 | 2024-01-30 | 中国华能集团清洁能源技术研究院有限公司 | Baffling type gas-liquid reaction system for treating concentrated alkali liquor and working method thereof |
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| CN115367960A (en) * | 2022-08-22 | 2022-11-22 | 石家庄高新技术产业开发区供水排水公司 | Advanced wastewater treatment device of coupling catalytic oxidation-biological filter |
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