CN104496082A - Separation treatment device for thermal treatment of wastewater and wastewater treatment method - Google Patents
Separation treatment device for thermal treatment of wastewater and wastewater treatment method Download PDFInfo
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- CN104496082A CN104496082A CN201410814888.2A CN201410814888A CN104496082A CN 104496082 A CN104496082 A CN 104496082A CN 201410814888 A CN201410814888 A CN 201410814888A CN 104496082 A CN104496082 A CN 104496082A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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Abstract
The invention discloses a separation treatment device for thermal treatment of wastewater and a wastewater treatment method, and belongs to the field of wastewater treatment. The wastewater treatment device disclosed by the invention comprises a settling pond, a reaction pond, a centrifugal separation device, a pressure pump, an ultrafiltration device and a nanofiltration device, wherein the settling pond, the reaction pond, the centrifugal separation device, the pressure pump, the ultrafiltration device and the nanofiltration device are sequentially connected with one another through a pipeline; an oil discharge outlet and a water storage tank are formed in the centrifugal separation device; and the centrifugal separation device is filled with acrylic polymer resin. According to the wastewater treatment method disclosed by the invention, oil substances in the wastewater are extracted, purified and recycled after being separated through the steps of participation, demulsification, adsorption, ultrafiltration, nanofiltration and the like; non-oil substances in the wastewater are filtered and purified; and the finally treated water can be recycled or directly discharged, thus resources are repeatedly utilized; energy sources are effectively saved; and the environment is protected.
Description
Technical field
The invention belongs to field of waste water treatment, more particularly, relate to a kind of separating and treating apparatus and method of wastewater treatment of thermal treatment waste water.
Background technology
Thermal treatment metallic substance is placed on heating in certain medium, insulation, cooling, controlled a kind of metal fever complete processing of its performance by the metallurgical structure changing material surface or inside.Thermal treatment former process process is very complicated, before have forging, casting, car, wash, plane, mill, cleaning, after have tempering, annealing, ball blast, the techniques such as cleaning, every procedure all can touch cooling oil or quenching oil, these cooling oils or quenching oil collect in rinse bath in front cleaning or rear cleaning process, produce the thermal treatment waste water that oleaginousness is higher, the process of oily(waste)water is the difficult point in field of waste water treatment always, in addition, in thermal treatment waste water, oily ingredient is complicated, also containing clean-out system (being mainly anion surfactant (LAS)), iron rust, dust granules, sodium carbonate, phosphoric acid salt, aluminium salt, lipid acid, sodium hydroxide and other matter, this turn increases difficulty to the treating processes of thermal treatment waste water.The waste water COD content produced in heat treatment process is high, complicated component, conventional sedimentation, flocculation cannot process, if and drop into more material in treating processes and carry out chemical reaction and make water quality more complicated, intractability is larger, these thermal treatment waste water, as carried out separating treatment not in time, will certainly pollute water resources and soil etc., threatening environment and human health.The wastewater flow rate produced because of Heat Treatment Enterprises compared with electroplating, the wastewater flow rate that produces of papermaking, dye transfer, paint, the industry such as agricultural chemicals is few, so the research that current environmental administration and manufacturing enterprise drop in the process field of thermal treatment waste water is fewer, suitable waste water treatment process in prior art, is not had to be applicable to the process of thermal treatment waste water.
Through retrieval, Chinese patent application publication number is CN 101279786 A, date of application is the treatment process that the patent application document on April 4th, 2007 discloses a kind of oily(waste)water, this invention is the treatment process for refinery oily(waste)water, oil production waste water in oil field, first emulsion splitter A is dropped in oily(waste)water, after breakdown of emulsion reaction, then flocculating agent B is dropped in oily(waste)water, emulsion splitter A is a kind of cationic polymers of quaternary ammonium type, the colloid aqueous solution of flocculating agent B to be a kind of with sulfonated methyl polyacrylamide be main component, oily(waste)water after the method process of this invention, particularly refinery oily(waste)water, oil production waste water in oil field, the technic index requirement of subsequent biochemical process can be met, but the oily wastewater treatment method that this invention provides is not suitable for the waste water produced in heat treatment process, because component is simple in refinery and oil production waste water in oil field, only containing waste oil, therefore deal with than being easier to, in addition, recovery of oil in waste water can not utilize by the treatment process provided in this invention, this will certainly cause the waste of resource, and also can produce a large amount of useless emulsion splitters and flocculation agent after processing oily(waste)water, this is also a kind of pollution and waste.Chinese patent application publication number is CN 102276072 A, date of application is the treatment process that the patent application document on June 11st, 2010 discloses that a kind of emulsion splitter carries out alkaline oily(waste)water, key step comprises: prepare emulsion splitter, emulsion splitter is added in a breakdown of emulsion tank and once fully stir, by a cavitation air flotation process, water after process enters in secondary breakdown of emulsion tank and carries out secondary breakdown of emulsion, enters air flotation pool and carries out the process of secondary air-dissolving air-float, high-level efficiency process alkalescence oily(waste)water.But the treatment process of the alkaline oily(waste)water that this invention provides is fairly simple, is not suitable for the waste water produced in heat treatment process, the waste component produced in thermal treatment process is complicated, also not studies have reported that relevant method of wastewater treatment at present.
Summary of the invention
1. the problem that will solve
Wet goods problem wherein cannot be recycled for the treatment process and oily wastewater treatment method that are not applicable to the waste water produced in thermal treatment process in prior art, the invention provides a kind of separating and treating apparatus and method of wastewater treatment of thermal treatment waste water.Contriver carries out special item for the trade effluent produced in Heat Treatment Enterprises; and to waste water oil-containing, test containing particulates such as clean-out system, dust, iron rust; finally work out a kind of method by method process thermal treatment waste water such as filtration, absorption, separations; extraction after oily matter in waste water can being separated, removal of impurities, recycling; non-oily material in water is filtered, purifies; water after the process finally obtained can be recycled or directly discharges; achieve the recycling of resource, effective save energy, protection of the environment.
2. technical scheme
In order to solve the problem, the technical solution adopted in the present invention is as follows:
A separating and treating apparatus for thermal treatment waste water, comprises settling tank, reaction tank, centrifugal separating device, pressure pump, ultra-filtration equipment and nanofiltration device; Settling tank, reaction tank, centrifugal separating device, pressure pump, ultra-filtration equipment are connected by pipeline successively with nanofiltration device; Described centrifugal separating device is provided with oil discharge outlet and aqua storage tank.
Preferably, pH monitor is provided with in described reaction tank.
Preferably, in described centrifugal separating device, be filled with the acrylic polymerization resins of 50-90% volume, in centrifugal separating device, be provided with de-oiling retrieving arrangement.
Preferably, be provided with Tao Shi ultra-filtration membrane in described ultra-filtration equipment, ultra-filtration membrane aperture is 0.001 ~ 0.02 μm.
Preferably, be provided with polyamide nanofiltration hollow fiber composite membrane in described nanofiltration device, membrane pore size is 9-10nm, and relative molecular weight cut-off is 200-1000D.
A treatment process for thermal treatment waste water, uses the separating and treating apparatus of above-mentioned a kind of thermal treatment waste water, the steps include:
A the waste water produced in thermal treatment process pumps in settling tank and leaves standstill 1-2h by ();
B waste water after leaving standstill is introduced in reaction tank by (), add emulsion splitter and mix rear acid and the pH value of waste water is adjusted to 6-7.5, then standing 20-30min;
C () adds sorbent material after leaving standstill and terminating in the waste water in step (b), leave standstill 1-2h, the mass ratio of sorbent material and waste water is (0.02-0.06): 1;
D () closes oil discharge outlet, introduced in centrifugal separating device by the waste water in step (c), enter in aqua storage tank after acrylic polymerization resins oil suction;
E water in aqua storage tank to pump in ultra-filtration equipment with pressure pump and carries out uf processing by ();
F water through uf processing pumps in nanofiltration device and carries out nanofiltration process by ();
G water after nanofiltration process is used for thermal treatment process or directly discharges by ();
H () thermal treatment waste water opens oil discharge outlet after running 2-3 days according to step (a) ~ (g); The de-oiling retrieving arrangement started in centrifugal separating device carries out pressurization to acrylic polymerization resins and rotates de-oiling, after de-oiling terminates, closes oil discharge outlet and de-oiling retrieving arrangement, continues to heat-treat wastewater treatment according to step (a) ~ (g).
Preferably, in described step (b), emulsion splitter is made up of alkyl phenolic resin block polyether and poly phosphate, the mass ratio of alkyl phenolic resin block polyether and poly phosphate is 1:(1.5-2.5), the add-on of emulsion splitter is the 1-3% of wastewater quality; Regulate the acid of wastewater pH to be massfraction to be the hydrochloric acid of 0.5%-1%.
Preferably, the sorbent material in described step (c) is obtained by reacting by water soluble polyalkylene glycol, potassium titanate, silicon-dioxide, butyl stearate, bagasse, st-yrax diethyl ether and water.
Preferably, in described step (d), the flow velocity of water is 5-8m
3/ h.
Preferably, the de-oiling condition in described step (h) is that acrylic polymerization resins is rotated 30-50min with the rotating speed of 600-1000r/min.
3. beneficial effect
Compared to prior art, beneficial effect of the present invention is:
(1) the present invention is directed to the feature of contained pollutent in thermal treatment waste water, devise a kind for the treatment of process of thermal treatment waste water, the emulsion splitter be made up of under specified proportion alkyl phenolic resin block polyether and poly phosphate is best to the oil in water emulsion demulsification in thermal treatment waste water, compared with common emulsion splitter, demulsification improves about 35%;
(2) sorbent material in the present invention take bagasse as raw material, be obtained by reacting with water soluble polyalkylene glycol, potassium titanate, silicon-dioxide, butyl stearate, adsorbent ability is strong, exist in solid form in wastewater treatment process, recoverable, what waste component can not be made to become is more complicated, can reuse after acidic solution rinses, cost is low, and water treatment efficiency is good;
(3) thermal treatment waste water separating and treating apparatus structure provided by the invention is simple, reasonable in design, is easy to manufacture, and floor space is little, good waste water treatment effect, wherein, macrobead pollutent in waste water can be removed by settling process by settling tank, emulsion splitter is added in reaction tank, make the oil in water emulsion breakdown of emulsion layering in waste water, then in reaction tank, sorbent material is added, sorbent material can adsorb the gel-like in waste water, heavy metal pollutant, in centrifugal separating device, acrylic polymerization resins can adsorb the oil substances in waste water, after acrylic polymerization resins absorption is saturated (oil mass that can draw of acrylic polymerization resins is 20-25 times of weight own), start de-oiling retrieving arrangement, the oil substances of resin absorption is separated to carry out recycling by the centrifugal mode of pressurization and (can lubrication be added to, in the techniques such as cutting), the macromolecular particle of sedimentation difficult in waste water, organism, gel filtration can fall by ultra-filtration membrane device, the top layer pore diameter range of the nanofiltration membrane in nanofiltration device, can by some macromole inorganicss at nano level, and inorganic salt, part ion etc. retain, and the water after nanofiltration process can directly discharge or again in thermal treatment process,
(4) in thermal treatment method for waste water provided by the invention, the chemical substance of throwing in is simple, secondary pollution can not be caused to water body, can again in the techniques such as lubrication, cutting after waste oil removes, the pH value of waste water is adjusted to neutrality and can directly discharges, and can not cause oxygen enrichment pollution to water body.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the separating and treating apparatus of thermal treatment waste water of the present invention.
In figure: 1, settling tank; 2, reaction tank; 3, centrifugal separating device; 301, oil discharge outlet; 302, aqua storage tank; 4, pressure pump; 5, ultra-filtration equipment; 6, nanofiltration device.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
Embodiment 1
As shown in Figure 1, a kind of separating and treating apparatus of thermal treatment waste water, comprises settling tank 1, reaction tank 2, centrifugal separating device 3, pressure pump 4, ultra-filtration equipment 5 and nanofiltration device 6; Settling tank 1, reaction tank 2, centrifugal separating device 3, pressure pump 4, ultra-filtration equipment 5 are connected by pipeline successively with nanofiltration device 6; PH monitor is provided with in reaction tank 2, centrifugal separating device 3 is provided with oil discharge outlet 301 and aqua storage tank 302 and de-oiling retrieving arrangement, be filled with in centrifugal separating device 3 70% volume acrylic polymerization resins (Japanese catalyst chemical industrial company with acrylic monomer be raw material production side chain on have the high oil absorbing resin of chain alkyl, AQUALIC), be provided with Tao Shi ultra-filtration membrane (LG-DOW ultra-filtration membrane SFP2860) in ultra-filtration equipment 5, ultra-filtration membrane aperture is 0.01 μm.Be provided with polyamide nanofiltration hollow fiber composite membrane (the NTR-7450 film of day east electrician) in nanofiltration device 6, membrane pore size is 10nm, and relative molecular weight cut-off is 500D.
By the separating and treating apparatus of above-mentioned a kind of thermal treatment waste water for the treatment of thermal treatment waste water, the steps include:
A the waste water produced in thermal treatment process pumps in settling tank 1 and leaves standstill 1h by ();
B waste water after leaving standstill is introduced in reaction tank 2 by (), add emulsion splitter mix rear massfraction be 0.5% hydrochloric acid the pH value of waste water is adjusted to 7.5, then 25min is left standstill, wherein, emulsion splitter is made up of alkyl phenolic resin block polyether and poly phosphate, the mass ratio of alkyl phenolic resin block polyether and poly phosphate is 1:2.5, and the add-on of emulsion splitter is 2% of wastewater quality;
C () leaves standstill and terminates after, sorbent material is added in the waste water in step (b), leave standstill 1.5h, the mass ratio of sorbent material and waste water is 0.06:1, wherein, sorbent material is obtained by reacting by water soluble polyalkylene glycol, potassium titanate, silicon-dioxide, butyl stearate, bagasse, st-yrax diethyl ether and water;
D () closes oil discharge outlet 301, introduced in centrifugal separating device 3 by the waste water in step (c), enter in aqua storage tank 302 after acrylic polymerization resins oil suction, the flow velocity of water is 8m
3/ h;
E water in aqua storage tank 302 to pump in ultra-filtration equipment 5 with pressure pump 4 and carries out uf processing by ();
F water through uf processing pumps in nanofiltration device 6 and carries out nanofiltration process by ();
G water after nanofiltration process is used for thermal treatment process or directly discharges by ();
H () thermal treatment waste water opens oil discharge outlet 301 after running 3 days according to step (a) ~ (g); The de-oiling retrieving arrangement started in centrifugal separating device 3 carries out pressurization to acrylic polymerization resins and rotates de-oiling, after de-oiling terminates, close oil discharge outlet and de-oiling retrieving arrangement, continue to heat-treat wastewater treatment according to step (a) ~ (g), de-oiling condition is that acrylic polymerization resins is rotated 30min with the rotating speed of 1000r/min.
In step (c), the mass fraction of each component of sorbent material is: water soluble polyalkylene glycol 6 parts, potassium titanate 3 parts, silicon-dioxide 8 parts, butyl stearate 8 parts, bagasse 50 parts, st-yrax diethyl ether 0.5 part, 1 part, water.Its preparation process is:
(1) mix in reaction utensil with 1 part of water, 0.5 part of st-yrax diethyl ether after taking 50 parts of bagasses pulverizing by mass fraction, irradiate 10min under being then placed in 100W ultraviolet lamp and carry out radiation modification;
(2) 6 parts of water soluble polyalkylene glycol (manufacturer: Wuhan Xin great Di environment-friendly materials company limited) are taken by mass fraction, 3 parts of potassium titanate (: Otsuka Chemical Co., Ltd of manufacturer, ProductName: titanium silk hair), 8 parts of silicon-dioxide, 8 parts of butyl stearates add in the reaction utensil in step (1) successively, stirring reaction 5h under 60 DEG C of conditions;
(3), after reaction terminates, moved in tabletting machine by reactant and be pressed into pie, every 5 parts of reactants press down 2min in 5KN condition and obtain pie water treatment absorbent, are then cooled to room temperature, obtain above-mentioned water treatment absorbent.
Water treatment absorbent good stability in the present embodiment, for shelf-stable, lucifuge kept dry was never degenerated after 3 years, high adsorption capacity in wastewater treatment process, and convenient recovery, can reuse after acidic solution rinses, cost is low, and water treatment efficiency is good.
In the present embodiment, the waste water produced in thermal treatment process before treatment, containing oil in water emulsion 10kg/t, phosphoric acid salt 100g/t, sodium hydroxide 150g/t, sodium-chlor 50g/t, lipid acid 50g/t, anion surfactant (LAS) 10g/t, tripoly phosphate sodium STPP 0.01g/t, calcium ion 0.018g/t, and aluminium, magnesium, the metallic salts such as potassium, pH value 10-11, after the disposal methods in the present embodiment, in waste water, oily substance is 7g/t, phosphonium ion 0.3g/t, sodium ion 0.4g/t, calcium, aluminium, magnesium, potassium ion≤0.001g/t, pH value is 7, reach discharge or reusable standard.
Embodiment 2
A separating and treating apparatus for thermal treatment waste water, comprises settling tank 1, reaction tank 2, centrifugal separating device 3, pressure pump 4, ultra-filtration equipment 5 and nanofiltration device 6, settling tank 1, reaction tank 2, centrifugal separating device 3, pressure pump 4, ultra-filtration equipment 5 is connected by pipeline successively with nanofiltration device 6; PH monitor is provided with in reaction tank 2, centrifugal separating device 3 is provided with oil discharge outlet 301 and aqua storage tank 302 and de-oiling retrieving arrangement, be filled with in centrifugal separating device 3 90% volume acrylic polymerization resins (Japanese catalyst chemical industrial company with acrylic monomer be raw material production side chain on have the high oil absorbing resin of chain alkyl, AQUALIC), be provided with Tao Shi ultra-filtration membrane (LG-DOW ultra-filtration membrane SFP2860) in ultra-filtration equipment 5, ultra-filtration membrane aperture is 0.02 μm; Be provided with polyamide nanofiltration hollow fiber composite membrane (the NTR-7450 film of day east electrician) in nanofiltration device 6, membrane pore size is 9nm, and relative molecular weight cut-off is 1000D.
By the separating and treating apparatus of above-mentioned a kind of thermal treatment waste water for the treatment of thermal treatment waste water, the steps include:
A the waste water produced in thermal treatment process pumps in settling tank 1 and leaves standstill 2h by ();
B waste water after leaving standstill is introduced in reaction tank 2 by (), add emulsion splitter mix rear massfraction be 1% hydrochloric acid the pH value of waste water is adjusted to 6, then 20min is left standstill, wherein, emulsion splitter is made up of alkyl phenolic resin block polyether and poly phosphate, the mass ratio of alkyl phenolic resin block polyether and poly phosphate is 1:1.5, and the add-on of emulsion splitter is 1% of wastewater quality;
C () leaves standstill and terminates after, sorbent material is added in the waste water in step (b), leave standstill 1h, the mass ratio of sorbent material and waste water is 0.02:1, wherein, sorbent material is obtained by reacting by water soluble polyalkylene glycol, potassium titanate, silicon-dioxide, butyl stearate, bagasse, st-yrax diethyl ether and water;
D () closes oil discharge outlet 301, introduced in centrifugal separating device 3 by the waste water in step (c), enter in aqua storage tank 302 after acrylic polymerization resins oil suction, the flow velocity of water is 5m
3/ h;
E water in aqua storage tank 302 to pump in ultra-filtration equipment 5 with pressure pump 4 and carries out uf processing by ();
F water through uf processing pumps in nanofiltration device 6 and carries out nanofiltration process by ();
G water after nanofiltration process is used for thermal treatment process or directly discharges by ();
H () thermal treatment waste water opens oil discharge outlet 301 after running 2 days according to step (a) ~ (g); The de-oiling retrieving arrangement started in centrifugal separating device 3 carries out pressurization to acrylic polymerization resins and rotates de-oiling, after de-oiling terminates, close oil discharge outlet and de-oiling retrieving arrangement, continue to heat-treat wastewater treatment according to step (a) ~ (g), de-oiling condition is that acrylic polymerization resins is rotated 50min with the rotating speed of 600r/min.
In step (c), the mass fraction of each component of sorbent material is: water soluble polyalkylene glycol 10 parts, potassium titanate 5 parts, silica 10 part, butyl stearate 10 parts, bagasse 70 parts, st-yrax diethyl ether 0.8 part, 1.4 parts, water.Its preparation process is:
(1) mix in reaction utensil with 1.4 parts of water, 0.8 part of st-yrax diethyl ether after taking 70 parts of bagasses pulverizing by mass fraction, irradiate 5min under being then placed in 300W ultraviolet lamp and carry out radiation modification;
(2) take 10 parts of water soluble polyalkylene glycol by mass fraction, 5 parts of potassium titanates, 10 parts of silicon-dioxide, 10 parts of butyl stearates add in the reaction utensil in step (1) successively, stirring reaction 3h under 65 DEG C of conditions;
(3), after reaction terminates, moved in tabletting machine by reactant and be pressed into pie, every 6 parts of reactants press down 1.5min in 10KN condition and obtain pie water treatment absorbent, are then cooled to room temperature, obtain above-mentioned water treatment absorbent.
Water treatment absorbent good stability in the present embodiment, for shelf-stable, lucifuge kept dry was never degenerated after 2 years, high adsorption capacity in wastewater treatment process, and convenient recovery, can reuse after acidic solution rinses, cost is low, and water treatment efficiency is good.
In the present embodiment, the waste water produced in thermal treatment process before treatment, containing oil in water emulsion 10kg/t, phosphoric acid salt 100g/t, sodium hydroxide 150g/t, sodium-chlor 50g/t, lipid acid 50g/t, anion surfactant (LAS) 10g/t, tripoly phosphate sodium STPP 0.01g/t, calcium ion 0.018g/t, and aluminium, magnesium, the metallic salts such as potassium, pH value 10-11, after the disposal methods in the present embodiment, in waste water, oily substance is 9g/t, phosphonium ion 0.5g/t, sodium ion 0.5g/t, calcium, aluminium, magnesium, potassium ion≤0.001g/t, pH value is 6, reach discharge or reusable standard.
Embodiment 3
A separating and treating apparatus for thermal treatment waste water, comprises settling tank 1, reaction tank 2, centrifugal separating device 3, pressure pump 4, ultra-filtration equipment 5 and nanofiltration device 6, settling tank 1, reaction tank 2, centrifugal separating device 3, pressure pump 4, ultra-filtration equipment 5 is connected by pipeline successively with nanofiltration device 6; PH monitor is provided with in reaction tank 2, centrifugal separating device 3 is provided with oil discharge outlet 301 and aqua storage tank 302 and de-oiling retrieving arrangement, be filled with in centrifugal separating device 3 50% volume acrylic polymerization resins (Japanese catalyst chemical industrial company with acrylic monomer be raw material production side chain on have the high oil absorbing resin of chain alkyl, AQUALIC), be provided with Tao Shi ultra-filtration membrane (LG-DOW ultra-filtration membrane SFP2860) in ultra-filtration equipment 5, ultra-filtration membrane aperture is 0.001 μm.Be provided with polyamide nanofiltration hollow fiber composite membrane (the NTR-7450 film of day east electrician) in nanofiltration device 6, membrane pore size is 9nm, and relative molecular weight cut-off is 200D.
By the separating and treating apparatus of above-mentioned a kind of thermal treatment waste water for the treatment of thermal treatment waste water, the steps include:
A the waste water produced in thermal treatment process pumps in settling tank 1 and leaves standstill 1.5h by ();
B waste water after leaving standstill is introduced in reaction tank 2 by (), add emulsion splitter mix rear massfraction be 0.8% hydrochloric acid the pH value of waste water is adjusted to 7.5, then 30min is left standstill, wherein, emulsion splitter is made up of alkyl phenolic resin block polyether and poly phosphate, the mass ratio of alkyl phenolic resin block polyether and poly phosphate is 1:2, and the add-on of emulsion splitter is 3% of wastewater quality;
C () leaves standstill and terminates after, sorbent material is added in the waste water in step (b), leave standstill 2h, the mass ratio of sorbent material and waste water is 0.04:1, wherein, sorbent material is obtained by reacting by water soluble polyalkylene glycol, potassium titanate, silicon-dioxide, butyl stearate, bagasse, st-yrax diethyl ether and water;
D () closes oil discharge outlet 301, introduced in centrifugal separating device 3 by the waste water in step (c), enter in aqua storage tank 302 after acrylic polymerization resins oil suction, the flow velocity of water is 6m
3/ h;
E water in aqua storage tank 302 to pump in ultra-filtration equipment 5 with pressure pump 4 and carries out uf processing by ();
F water through uf processing pumps in nanofiltration device 6 and carries out nanofiltration process by ();
G water after nanofiltration process is used for thermal treatment process or directly discharges by ();
H () thermal treatment waste water opens oil discharge outlet 301 after running 3 days according to step (a) ~ (g); The de-oiling retrieving arrangement started in centrifugal separating device 3 carries out pressurization to acrylic polymerization resins and rotates de-oiling, after de-oiling terminates, close oil discharge outlet and de-oiling retrieving arrangement, continue to heat-treat wastewater treatment according to step (a) ~ (g), de-oiling condition is that acrylic polymerization resins is rotated 35min with the rotating speed of 800r/min.
In step (c), the mass fraction of each component of sorbent material is: water soluble polyalkylene glycol 15 parts, potassium titanate 7 parts, silica 15 parts, butyl stearate 15 parts, bagasse 80 parts, st-yrax diethyl ether 1 part, 2 parts, water.Its preparation process is:
(1) mix in reaction utensil with 2 parts of water, 1 part of st-yrax diethyl ether after taking 80 parts of bagasses pulverizing by mass fraction, irradiate 3min under being then placed in 500W ultraviolet lamp and carry out radiation modification;
(2) take 15 parts of water soluble polyalkylene glycol by mass fraction, 7 parts of potassium titanates, 15 parts of silicon-dioxide, 15 parts of butyl stearates add in the reaction utensil in step (1) successively, stirring reaction 2h under 80 DEG C of conditions;
(3), after reaction terminates, moved in tabletting machine by reactant and be pressed into pie, every 10 parts of reactants press down 1min in 15KN condition and obtain pie water treatment absorbent, are then cooled to room temperature, obtain above-mentioned water treatment absorbent.
Water treatment absorbent good stability in the present embodiment, for shelf-stable, lucifuge kept dry was never degenerated after 3 years, high adsorption capacity in wastewater treatment process, and convenient recovery, can reuse after acidic solution rinses, cost is low, and water treatment efficiency is good.
In the present embodiment, the waste water produced in thermal treatment process before treatment, containing oil in water emulsion 10kg/t, phosphoric acid salt 100g/t, sodium hydroxide 150g/t, sodium-chlor 50g/t, lipid acid 50g/t, anion surfactant (LAS) 10g/t, tripoly phosphate sodium STPP 0.01g/t, calcium ion 0.018g/t, and aluminium, magnesium, the metallic salts such as potassium, pH value 10-11, after the disposal methods in the present embodiment, in waste water, oily substance is 5g/t, phosphonium ion is 0.2g/t, sodium ion 0.4g/t, calcium, aluminium, magnesium, potassium ion≤0.001g/t, pH value 8, reach discharge or reusable standard.
Claims (10)
1. the separating and treating apparatus of a thermal treatment waste water, it is characterized in that: comprise settling tank (1), reaction tank (2), centrifugal separating device (3), pressure pump (4), ultra-filtration equipment (5) and nanofiltration device (6); Settling tank (1), reaction tank (2), centrifugal separating device (3), pressure pump (4), ultra-filtration equipment (5) are connected by pipeline successively with nanofiltration device (6); Described centrifugal separating device (3) is provided with oil discharge outlet (301) and aqua storage tank (302).
2. the separating and treating apparatus of a kind of thermal treatment waste water according to claim 1, is characterized in that: be provided with pH monitor in described reaction tank (2).
3. the separating and treating apparatus of a kind of thermal treatment waste water according to claim 1, it is characterized in that: the acrylic polymerization resins being filled with 50-90% volume in described centrifugal separating device (3), centrifugal separating device is provided with de-oiling retrieving arrangement in (3).
4. the separating and treating apparatus of a kind of thermal treatment waste water according to claim 1, is characterized in that: be provided with Tao Shi ultra-filtration membrane in described ultra-filtration equipment (5), ultra-filtration membrane aperture is 0.001 ~ 0.02 μm.
5. the separating and treating apparatus of a kind of thermal treatment waste water according to claim 1, it is characterized in that: in described nanofiltration device (6), be provided with polyamide nanofiltration hollow fiber composite membrane, membrane pore size is 9-10nm, and relative molecular weight cut-off is 200-1000D.
6. a treatment process for thermal treatment waste water, is characterized in that: the separating and treating apparatus using a kind of thermal treatment waste water described in claim 1, the steps include:
A the waste water produced in thermal treatment process pumps in settling tank (1) and leaves standstill 1-2h by ();
B waste water after leaving standstill is introduced in reaction tank (2) by (), add emulsion splitter and mix rear acid and the pH value of waste water is adjusted to 6-7.5, then standing 20-30min;
C () adds sorbent material after leaving standstill and terminating in the waste water in step (b), leave standstill 1-2h, the mass ratio of sorbent material and waste water is (0.02-0.06): 1;
D () closes oil discharge outlet (301), introduced in centrifugal separating device (3) by the waste water in step (c), enter in aqua storage tank (302) after acrylic polymerization resins oil suction;
E water in aqua storage tank (302) to pump in ultra-filtration equipment (5) with pressure pump (4) and carries out uf processing by ();
F water through uf processing pumps in nanofiltration device (6) and carries out nanofiltration process by ();
G water after nanofiltration process is used for thermal treatment process or directly discharges by ();
H () thermal treatment waste water runs 2-3 days according to step (a) ~ (g) after, open oil discharge outlet (301); The de-oiling retrieving arrangement started in centrifugal separating device (3) carries out pressurization to acrylic polymerization resins and rotates de-oiling, after de-oiling terminates, close oil discharge outlet and de-oiling retrieving arrangement, continue to heat-treat wastewater treatment according to step (a) ~ (g).
7. the treatment process of a kind of thermal treatment waste water according to claim 6, it is characterized in that: in described step (b), emulsion splitter is made up of alkyl phenolic resin block polyether and poly phosphate, the mass ratio of alkyl phenolic resin block polyether and poly phosphate is 1:(1.5-2.5), the add-on of emulsion splitter is the 1-3% of wastewater quality; Regulate the acid of wastewater pH to be massfraction to be the hydrochloric acid of 0.5%-1%.
8. the treatment process of a kind of thermal treatment waste water according to claim 6, is characterized in that: the sorbent material in described step (c) is obtained by reacting by water soluble polyalkylene glycol, potassium titanate, silicon-dioxide, butyl stearate, bagasse, st-yrax diethyl ether and water.
9. the treatment process of a kind of thermal treatment waste water according to claim 6, is characterized in that: in described step (d), the flow velocity of water is 5-8m
3/ h.
10. the treatment process of a kind of thermal treatment waste water according to claim 6, is characterized in that: the de-oiling condition in described step (h) is that acrylic polymerization resins is rotated 30-50min with the rotating speed of 600-1000r/min.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109133405A (en) * | 2017-06-19 | 2019-01-04 | 中国石油化工股份有限公司 | The purification method of delayed coking sour water |
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| CN102120653A (en) * | 2011-01-04 | 2011-07-13 | 西安皓海嘉水处理科技有限责任公司 | Treatment device and method of low-permeability high-salt oil field extracted wastewater |
| CN102718341A (en) * | 2012-06-28 | 2012-10-10 | 秦广山 | Centrifugal non-landing waste drilling fluid innocent treatment technology |
| CN204325043U (en) * | 2014-12-23 | 2015-05-13 | 马鞍山金泉工业介质科技有限公司 | A kind of separating and treating apparatus of thermal treatment waste water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102120653A (en) * | 2011-01-04 | 2011-07-13 | 西安皓海嘉水处理科技有限责任公司 | Treatment device and method of low-permeability high-salt oil field extracted wastewater |
| CN102718341A (en) * | 2012-06-28 | 2012-10-10 | 秦广山 | Centrifugal non-landing waste drilling fluid innocent treatment technology |
| CN204325043U (en) * | 2014-12-23 | 2015-05-13 | 马鞍山金泉工业介质科技有限公司 | A kind of separating and treating apparatus of thermal treatment waste water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109133405A (en) * | 2017-06-19 | 2019-01-04 | 中国石油化工股份有限公司 | The purification method of delayed coking sour water |
| CN109133405B (en) * | 2017-06-19 | 2021-10-08 | 中国石油化工股份有限公司 | Method for purifying sulfur-containing sewage of delayed coking |
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