CN109607875A - A kind of water treatment technology for coping with sudden aniline pollution - Google Patents

Abstract

The present invention provides a kind of water treatment technologies for coping with sudden aniline pollution.It is characterized by: adding the mg of 55 mg ~ 65 Powdered Activated Carbon (PAC) into every liter of raw water first, 5 min with the stirring of 90 r/min rates, adsorb the min of 20 min ~ 30 after mixing；Second step adds the mg potassium permanganate of 2.4 mg ~ 3.0 (KMnO into above-mentioned mixed liquor₄), aoxidize the min of 30 min ~ 50；Above-mentioned mixed liquor is handled the min of 30 min ~ 45 using ultrafiltration membrane system by third step, and aniline removal rate is up to 80.0% ~ 90.0%.It is able to satisfy drinking water standard (GB5749-2006) using each water quality indicator in the water outlet of the technical treatment, and is better than PAC, KMnO₄The removal effect to aniline individually or is two-by-two combined with hyperfiltration technique.

Description

A kind of water treatment technology for coping with sudden aniline pollution

Technical field

The present invention provides a kind of water treatment technology for coping with the pollution of sudden aniline, and in particular to a kind of powder activity Charcoal-potassium permanganate combination-ultrafiltration combination technique, belongs to water-treatment technology field.

Background technique

Aniline type organic is the organic matter that industrial production is commonly used, in production, transportational process, once accident occurs Accident, into source water or other water bodys, it will cause a degree of threat safely to Drinking Water for Residents.Due to aniline Type organic has very strong toxicity, belongs to " three cause " substance of " carcinogenic, teratogenesis shape, mutagenesis ", and is difficult to biodegrade, and one As water factory's common process it is unsatisfactory to its removal effect, therefore sudden aniline pollution processing be all originally all the time The a great problem that water factory faces.Currently, to the active carbon adsorption of the processing method of aniline type organic, membrane technology, change Learn oxidizing process etc..

(1) active carbon adsorption

Absorption is a kind of surface of solids phenomenon, using the stronger adsorptivity of porous solid, one or more of components in water is made to exist It is adsorbed on a solid surface under the action of intermolecular force or chemical bond force, to achieve the purpose that separation.It is applied at present The adsorbent of water process mainly active charcoal, zeolite, clay etc., wherein application it is most be active carbon, active carbon contains largely Micropore, specific surface area is huge, can effectively remove coloration, odor and small organic molecule in water removal.It is living in terms of practical application Property carbon adsorption can be used alone, and can also be combined with other methods, for example, in waterworks active carbon generally with pre- oxygen Change, biologic treating technique combination, many organic pollutants can be removed, to cope with water body sudden organic pollution accident.

Common active carbon is divided into two kinds of granular activated carbon (GAC) and Powdered Activated Carbon (PAC), and GAC is mainly used for originally The general water treatment technology of water factory is primarily due to its recyclable regeneration, is recycled, and adsorption effect is stablized；PAC is mainly used for water Pollution emergency processing technique, when water body is influenced by burst Pollution object, pollutant concentration can be dropped in the short time by adding PAC It is low.Whether in test process or in terms of water factory's practical application, adding PAC is a kind of reliable technological means.

PAC is preferable to the adsorption capacity of the organic pollutants such as aniline.In the emergence technology research of source water aniline pollution, Many scholars at home and abroad explore the adsorption effect of Powdered Activated Carbon, and Chen Zhonglin etc. is research shows that Powdered Activated Carbon pre-suction It is attached under the premise of not changing prior art, has that control effect is good, investment is small, adaptable to short-term water quality mutation etc. excellent Point is a kind of method of economic, simple and easy sudden phenyl amines organic contamination of control；Cui Fuyi etc. is research shows that in aniline In the case where exceeded 14.22 times of type organic, Powdered Activated Carbon is added into raw water, in the condition for guaranteeing its abundant adsorption time Under, the concentration of aniline type organic can be effectively reduced；For Fu Jinxiang etc. research shows that when pH > 5, active carbon holds the absorption of aniline Measure larger, and the biggish carbo lignius adsorption effect of specific surface area is got well than coal quality charcoal, and PAC is to the adsorbance of aniline in 30min 80%~90% can be reached；Sweet generation is newly equal research shows that as the rising of temperature will lead to decline of the PAC to aniline adsorption effect, but The dosage for improving PAC can weaken the influence of temperature；Sun Tong etc. research shows that with active carbon dosage increase, absorption speed Rate can also increase accordingly；When sweet generation recent studies on shows that PAC and coagulant or chlorine dioxide are combined, the removal effect of aniline is better than PAC is used alone.

Although PAC has significant effect in terms of handling organic matter, in actual application, PAC is essentially all It is disposable, it is difficult to which that reclaiming, and its price is very expensive, therefore, it is necessary to by active carbon adsorption and other water process Technology combination reduces the purpose of cost to reach the usage amount for reducing active carbon.

(2) membrane technology

Compared with traditional physical chemistry isolation technics, phase-state change does not occur during the separation process for membrane technology, usually exists (22 DEG C) of room temperature progress, energy consumption is lower, is suitble to separation heat-sensitive substance, and its separation is very big, from virus, bacterium to particle Organic matter and inorganic matter and many special solution systems, such as the separation of macromolecular and inorganic salts in solution.Membrane separating process master Will be using pressure as motive force, separator is simple, easy to operate.

According to the difference of membrane aperture and separation principle, membrane technology is divided into micro-filtration, ultrafiltration, reverse osmosis etc..The hole of micro-filtration Diameter is larger, can generally remove the colloid of suspended matter in water removal, bacterium, fractionated viral and large scale；Ultrafiltration is wanted compared with the aperture of micro-filtration It is small, colloidal substance, particle, bacterium, virus and the protozoan in water can all be removed；It is reverse osmosis to be usually used in removing all kinds of give up Impurity contained in water, to the pesticide, humic acid, THMs, disinfection by-products and to be difficult to the surface removed living contained in water Property agent etc. has good removal effect.

Research achievement of the membrane technology in terms of aniline waste water is even less, and the capital cost and fortune of membrane technology Row is costly, there is a problem of film blocking, fouling membrane and Membrane cleaning hardly possible in the process of running, therefore deposit in terms of popularization and application In very big obstruction.In recent years, the price of advancing by leaps and bounds with membrane technology, film is gradually acceptable to the market, while hyperfiltration technique day Become perfect, oneself is gradually applied to the operation of urban water plant to membrane technology, and third generation drinking water treatment technique will be with ultrafiltration skill Art is core, and the new direction that will become drinking water purification process development.

(3) chemical oxidization method

Common chemical method is preoxidation in the treatment process of source water, mainly in the forward direction water that raw water carries out coagulation Oxidant is added, the oxidability of oxidant is made full use of, the organic pollutant in water is aoxidized, enhances the place of subsequent treatment process Manage effect.Common oxidant has ozone, chlorine dioxide, chlorine and potassium permanganate etc. in drinking water treatment.

Chlorine dioxide is that one kind more cleaning, highly effective oxidizer, chlorine dioxide can kill the brood body of bacterium, bud The microorganisms such as spore, virus and fungi do not generate product be harmful to the human body, carcinogenic during aoxidizing Organic substance in water, But chlorine dioxide is a kind of gas of explosive, and general extemporaneous preparation uses, and transport storage is more difficult.

Chlorine is widely used since its is at low cost, Disinfection Effect is significant, but with the development of water treatment technology, chlorine The drinking water of disinfection has been unable to meet requirement of the resident to drinking water safety, and the disinfection by-products generated in its disinfecting process makes The life security of resident is threatened.Due to disinfection by chlorine dangers to health, the advantage of ozone oxidation is embodied, thus quilt It is widely applied.Have the operation result of Running-water Company to show: after pre- ozone, sand filter water outlet can meet life and drink Water security requirement.

Potassium permanganate is a kind of strong oxidizer, the organic pollutant being also commonly used in removal source water.Potassium permanganate is to drink With the effect disquisition of water process be earliest by the seminar of Mr. Li Guibai of Harbin Institute of Technology, have studied Gao Meng Sour potassium to underwater micro- organic matter (such as phenol), natural organic matter (such as humic acid a kind of), mutagenic matter (such as aniline) with And the oxidation removal effect of Chlorination Disinfection By-products (such as chloroform), research shows that potassium permanganate in water for " preferentially removing Pollutant " and " three cause " substance, have certain removal effect.Other are research shows that use Potassium Permanganate Preoxidation and aluminium salt Processing method associated with coagulation removes certain organic pollutants in water removal, also can achieve good removal effect.This illustrates height Potassium manganate has very high application value in water treatment field, is also easier to combine with water factory common process, in the side of adding It is also easier to operate in terms of formula and dosage.

Summary of the invention

Counte-rplan of the China in terms of sudden water pollution accident are few, in order to effective rapidly after contamination accident occurs Control pollutant concentration, the present invention is directed to source water aniline abrupt polluting accident, establishes perfect pretreatment and super Water treatment technology associated with filter method provides robust techniques for the sudden aniline pollution of source water.

Specific technical solution is as follows:

It is a kind of to utilize Powdered Activated Carbon, the water process skill of the sudden aniline pollution of potassium permanganate combination-ultrafiltration combination reply Art, it is characterized in that adding KMnO after first adding PAC before ultrafiltration membrance filter₄Water sample pretreatment is carried out, using the side of periodic duty Formula work.The parameters such as reagent type, reagent sequence, reagent dosage, stirring rate and reaction time are added by control, are reached The purpose for being preferably minimized concentration of aniline in water in short time.

The ultrafiltration membrance filter system, including following setting condition:

1) ultrafiltration membrane used by is PVDF hollow fiber ultrafiltration membrane, and effective membrane area is 20 m², outer dimension D × L is 147 The mm of mm × 1327, weight are 18 kg, retaining molecular weight 80000,1 ~ 10 when the pH scope of application is filtering, when chemical cleaning 0~12。

2) service condition set by is respectively 2.0 m of maximum flow of inlet water³/ h, maximum 3.0 m of backwash flow³/ h, it is maximum 4.5 Nm of air mass flow³/ h, maximum 100 kPa of transmembrane pressure, 40 DEG C of maximum operation (service) temperature.

Preferably, described to add optimal adsorption and oxidising agent is respectively Powdered Activated Carbon (PAC) and potassium permanganate (KMnO₄).

Preferably, the water treatment technology of the sudden aniline pollution of the reply, comprising the following steps:

1) mg of 55 mg ~ 65 PAC is added into every liter of raw water first, 5 min are stirred after mixing with 90 r/min rates, Adsorb 20 min ~ 30min；

2) second step adds the mg of 2.4 mg ~ 3.0 KMnO into above-mentioned mixed liquor₄, aoxidize 30 min ~ 50min；

3) above-mentioned mixed liquor is handled the min of 30 min ~ 45 using ultrafiltration membrane system by third step.

The technology of the present invention the utility model has the advantages that

(1) emergence treatment scheme proposed in the present invention can effectively remove the aniline in water sample, in a short time concentration of aniline It is preferably minimized.

(2) PAC-KMnO that the present invention uses₄Each water quality indicator can in the source water of ultrafiltration combined treatment technical treatment Meet the requirement of " drinking water standard " (GB5749-2006), and is better than PAC, KMnO₄With hyperfiltration technique individually or two Two combine the removal effect to aniline, can simultaneously be effectively reduce the dosage of Powdered Activated Carbon, effectively control emergency processing The cost of measure.

(3) PAC-KMnO that the present invention uses₄- ultrafiltration combined treatment technology is to sudden aniline water pollution emergency processing There are preferable application and promotional value.

Detailed description of the invention

Attached drawing 1: processing system schematic diagram.

Attached drawing 2: the standard curve of aniline.

Attached drawing 3: different PAC add influence of the concentration to aniline removal effect.

Attached drawing 4: different PAC add the removal rate of aniline under concentration.

Attached drawing 5: influence of the different PAC adsorption times to aniline removal effect.

Attached drawing 6: different potassium permanganate add influence of the concentration to aniline removal effect.

Attached drawing 7: different potassium permanganate add concentration to aniline removal rate.

Attached drawing 8: influence of the different potassium permanganate oxidation times to aniline removal effect.

Attached drawing 9: influence of the different order of adding to aniline removal effect.

Attached drawing 10:60 mg/LPAC adds KMnO under concentration₄The optimization of dosage.

Attached drawing 11:2.5mg/L KMnO4 adds the optimization of PAC dosage under concentration.

Attached drawing 12: the optimization comparison of the PAC dosage based on ultra-filtration process.

Attached drawing 13: different process unit Inlet and outlet water water quality comparison.

Specific embodiment

Embodiment one:

Take the tap water of four parts of l L, then every part of aniline reagents for being added 0.5mg put into the PAC of various dose, respectively 20 mg, 30 mg, 40 mg, 60 mg, 80 mg stir l h with the speed of 90 r/min, are filtered with neutral filter paper, then Appropriate result is taken to be detected.Test result is shown in attached drawing 3 and attached drawing 4.

By attached drawing 3 and attached drawing 4 it is found that PAC dosage has certain influence to aniline removal effect, be positively correlated connection, i.e., PAC dosage is bigger, and removal effect is more significant.When dosage is 20 mg/L, aniline removal rate is only 29.0%, in dosage When increasing to 80 mg/L, 80.9% can reach.But after dosage reaches certain limit, removal rate will not be with dosage Increase and increase, in the trend slowly increased.Obtained from the analysis of attached drawing 3: the PAC concentration added into raw water increases to 40 When mg/L, aniline aqueous concentration is 0.110 mg/L.When the PAC of addition reaches 60 mg/L, the aqueous concentration of aniline reaches 0.104 mg/L, removal rate only rise 1.2%.Only when PAC dosage is 80 mg/L, the aniline water outlet in water sample is dense Degree is 0.098mg/L, lower than the limit value of surface water.

Embodiment two:

The aniline water sample for taking 6 parts of 1L to be configured to is respectively put into 5 coagulation liquid containers, and adds 40 mg PAC thereto, is mixed It is stirred after closing uniformly with 90r/rain rate, respectively the mistake after adsorbing 5min, 10min, 15min, 20min, 30min, 60min Filter takes water sample after appropriate filtering to be measured.Test result is shown in attached drawing 5.

It is analyzed by attached drawing 5 it is found that the variation asked when adsorbing influences concentration of aniline variation, the time is longer, and concentration is continuous therewith The rate for reducing, but removing is not to maintain constant.In preceding 20 min, remove it is fastest, when to 30 ~ 60min, removal Rate is decreased obviously, and gradually trend is steady.Aniline has been removed nearly 75% in 30 min, and residual concentration is only left 0.133 mg/L.The removal rate of aniline slows down after 30min, only reduces 0.02 mg/L than 30min when achieving the effect that 60min. In the actual production process, when the pollution of burst Pollution substance occurs for water head site, it is desirable that in a short time drop pollutant concentration To minimum, to reduce the loss of its bring.Therefore optimal adsorption time of the 30min as PAC processing aniline can be used, but applying Specific adsorption time will also be determined according to the water quality of source water and the concentration of aniline in the process.

Embodiment three:

Exceeded 5 times of the water sample of 5 parts of lL is taken, the KMnO of l mg/mL is separately added into₄Solution l mL, 1.5 mL, 2 mL, 2.5 mL, 3 mL.60 min are stirred after mixing, it is filtered later, take appropriate filtered fluid to be detected, test result is shown in Attached drawing 6 and attached drawing 7.

By attached drawing 6 and attached drawing 7 it is found that KMnO₄There is certain removal effect to aniline, and with the increasing for adding concentration It is big and effect gradually improves.Work as KMnO₄When adding concentration and reaching 1.0 mg/L, the removal rate of aniline is 11.9%, the every increasing of dosage Big 0.5 mg/L, the removal rate of aniline accordingly rise 12% or so.As KMnO in water sample₄Dosage increases to 3.0 mg/L, aniline Concentration drops down to 0.215 mg/L, and very big but aniline residual concentration is still higher than the limit value of surface water to dosage.By This obtains in the emergency processing to aniline, individual KMnO₄Oxidation measure, which cannot make to be discharged, reaches standard limit, and with The coloration problem that its dosage increase occurs will become another big problem in actual production process, increase the negative of subsequent water process Load.

Example IV:

The prepared aniline water sample of 6 part of 1 L is taken, adds 2.5 mg KMnO respectively₄, it is uniformly mixed and is stirred, revolving speed 90 r/min.It is filtered respectively in 5 min of oxidation, 10 min, 15 min, 20 min, 30 min, 60 min, 120 min sampling, Then appropriate water outlet is taken to detect it respectively.Experimental test result is shown in attached drawing 8.

It is analyzed by attached drawing 8, KMnO₄The rate of oxidation removal aniline gradually slows down after 30 min, in 30 min of beginning The removal effect highly significant of interior aniline.In 5 ~ 30 min of oxidation process, every 5 min of aniline removal rate increases by 7%, and half is small When after total removal rate reach 40.6%, the residual concentration of aniline drops to 0.297 mg/L.After 30 min, removal rate still rises, But it obviously gradually tends to be steady.When oxidation proceeds to 60 min, the removal rate of aniline is 45.3%, is shown in 30 ~ 60 min Total removal rate is equivalent to the removal effect in previous 5 min of build phase.And aoxidize when proceeding to 120 min, removal rate is into increasing Add 2%, residual concentration still has 0.262 mg/L.It is described by above-mentioned analysis, KMnO₄Although aoxidizing the final effect of aniline It is not satisfactory, but can be using 30 min as KMnO₄The optimization process time of aniline is aoxidized, and by itself and other treatment measures It is combined, copes with the burst Pollution of aniline.

Embodiment five:

Take the prepared aniline water sample of three parts of 1L.By adding KMnO after first adding PAC₄While adding PAC and KMnO₄, first add KMnO₄The sequence for adding PAC afterwards is tested, and the interval time that adds of two kinds of medicaments is 20 min.KMnO₄Adding concentration is 2.5 The concentration that adds of mg/L, PAC are 40 mg/L.Water sample is stirred with the speed of 90 r/min after adding, after reacting 60 min Appropriate filtrate is filtered to take to be measured.Testing result is shown in attached drawing 9.

By attached drawing 9 it is found that first adding PAC after add KMnO₄, the removal rate of aniline is 52.3% after reaction, removal effect Fruit is better than the two while adding (42.9%) and first adding KMnO₄After add PAC (35.9%).It may be due to first adding KMnO₄ These small molecule meetings when will lead to Organic substance in water oxidation and become small-molecule substance and certain coloration can be presented in water, then adding PAC Influence its adsorption effect to aniline.If first adding PAC, it understands the part aniline in quick adsorption water, and remainder then exists KMnO₄Oxidation and active carbon suction-operated under a step of spouting be removed.

Embodiment six:

The aniline water sample for taking three parts of 1L to be configured to, put into respectively into each water sample 2.4 mg, 2.3 mg, 2.2 mg, 2.1 mg, The KMnO of 2.0 mg₄.After mixing, 20 min of water sample is stirred with the speed of 90 r/min, it is anti-puts into 60 mg/L PAC later 40 min are answered, and are filtered, finally takes and a certain amount of filtrate is respectively taken to be detected.Test result attached drawing 10.

By attached drawing 10 it is found that being discharged concentration of aniline with KMnO under conditions of PAC adds concentration and fixes₄Dosage Reduction is gradually increased, but its growth rate first increase after gradually slow down.KMnO₄The concentration that adds continue to be reduced to 2.3 mg/L When, the residual concentration of aniline reaches 0.110 mg/L, which has been more than the limit value of aniline in source water.Under the conditions of this water sample, When PAC dosage is 60 mg/L, Ying Jiang KMnO₄Add concentration control in the mg/L of 2.4 mg/L ~ 2.5.

Embodiment seven:

The aniline water sample for taking five parts of 1L to be configured to, puts into 45 mg of PAC, 50 mg, 55 mg, 60 mg, 65 mg respectively, and mixing is equal After even, 20 min first are stirred with the speed of 90 r/min, put into the KMnO of 2.5 mg/L later₄It is aoxidized, aoxidizes 40 min Water sample is filtered respectively afterwards, finally its result is measured.Test result is shown in attached drawing 11.

By attached drawing 11 it is found that in KMnO₄In the case that dosage is constant, the removal rate of aniline with PAC dosage increasing Add and gradually rise, when dosage reaches 60 mg/L, the removal rate of aniline has reached 81.5%.Reach 60 in dosage Before mg/L, PAC 5 mg/L of every increase, the residual concentration of aniline then reduces by 0.05 mg/L.PAC adds concentration and reaches 60 mg/L When, residual concentration of aniline only remains 0.092 mg/L in water sample, can meet source water water inlet limit value requirement.

Embodiment eight:

In use 1 process flow chart of attached drawing to test, prepare aniline and use solution, and added into raw water box, raw water is prepared Intend the water inlet that super multiple is 5 times at aniline, adds 60 respectively after being thoroughly mixed 5 min by mechanical stirring in raw water box The KMnO of 2.4 mg/L is added after the PAC of mg/L, 55 mg/L, 50 mg/L, 20 min of absorption progress₄Solution, reaction carry out 40 Ultrafiltration is carried out after min.After 30 min of ultrafiltration, it is discharged and is detected.Testing result attached drawing 12.

By attached drawing 12 it is found that as the removal rate of the reduction aniline of PAC dosage gradually decreases.To exceeded 5 times of ultrafiltration 2.4 mg/L KMnO are added in raw water box₄, when dosage continues to drop to 50 mg/L, removal rate becomes 73.3%, in water outlet The concentration of aniline reaches 0.133 mg/L, has been over the requirement of surface water limit value.With embodiment eight in KMnO₄Dosage is Discovery is compared in the Optimum Experiment of PAC dosage under the conditions of 2.5 mg/L, and in the identical situation of dosage, PAC's is added The lower ultrafiltration of concentration is more obvious the removal effect of aniline.To guarantee the security reliability to supply water by above-mentioned analysis, need to control PAC's processed adds concentration in 55mg/L ~ 65 mg/L, KMnO₄Add concentration between 2.4 ~ 3.0 mg/L.

Embodiment nine:

Test has been verified that PAC-KMnO₄The Aniline categories in source water can be effectively removed in ultrafiltration group technology, To further determine that the technique can be used as the emergency trouble shooting measures of waterworks, need to verify its effluent quality.

Into raw water box, exceeded 5 times of the water inlet of aniline adds Powdered Activated Carbon, and adding concentration is 55 mg/L, in raw water box In by mechanical stirring, after being thoroughly mixed 5 min, absorption carries out then liquor potassic permanganate that 20 min add 2.4 mg/L, Reaction carries out ultrafiltration after carrying out 40 min.After the completion of ultrafiltration, suitable water outlet is taken to detect it, the results are shown in attached figure 13.

It can be obtained by the analysis of attached drawing 13, in the water outlet of ultrafiltration group technology, organic concentration is further decreased, especially to direct Ultrafiltration is substantially without the UV of removal effect₂₅₄, group technology can reach 43.8% removal rate；Not pretreated water sample directly filters Aqueous concentration afterwards maintains between 2.0 ~ 3.0 mg/L, and removal rate increases to 45.2% after the water sample filtering added in advance.? PAC-KMnO₄It is caused in water factory in application, coagulating sedimentation is difficult to remove it if PAC dosage is excessive as emergency preplan The case where sand coarse aggregate ratio layer is pierced.And ultrafiltration can be much larger than its aperture (0.005- for (10 μm) of partial size as physical filtering process 0.006 μm) PAC completely remove, the increase of dosage influences effluent quality unobvious.To sum up, PAC- potassium permanganate-ultrafiltration Group technology can be used as the emergency trouble shooting measures of drinking water burst aniline pollution, Powdered Activated Carbon and potassium permanganate dosage Than being about 55 mg/L:2.4 mg/L.

The above-mentioned description to embodiment is for that can understand and apply the invention convenient for those skilled in the art. Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to embodiments here, originally Field technical staff announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be in the present invention Protection scope within.

Claims (7)

1. a kind of water treatment technology for coping with sudden aniline pollution, it is characterised in that: Powdered Activated Carbon, potassium permanganate and submergence Formula ultrafiltration membrance filter system has certain treatment effect to pollutants such as aniline, is combined into PAC-KMnO₄- ultrafiltration membrane mistake Filter technology handles aniline in source water and other pollutants.

2. ultrafiltration membrance filter system as described in claim 1, it is characterised in that: used ultrafiltration membrane is PVDF doughnut Ultrafiltration membrane, effective membrane area are 20 m², outer dimension D × L is the mm of 147 mm × 1327, and weight is 18 kg, and film retains molecule Amount is 80000,1 ~ 10 when the pH value scope of application is filtering, 0 ~ 12 when chemical cleaning.

3. the ultrafiltration membrance filter system as described in claim 1 ~ 2, it is characterised in that: set service condition is respectively maximum 2.0 m of flow of inlet water³/ h, maximum 3.0 m of backwash flow³/ h, 4.5 Nm of maximum air flow amount³/ h, maximum transmembrane pressure 100 KPa, 40 DEG C of maximum operation (service) temperature.

4. coping with the water treatment technology of sudden aniline pollution as described in claim 1, it is characterised in that: add optimal adsorption It is respectively water process Powdered Activated Carbon (PAC) and potassium permanganate (KMnO with oxidising agent₄).

5. such as claim 1 and a kind of water treatment technology for coping with sudden aniline pollution as claimed in claim 4, feature exists In the dosage of PAC is the mg of 55 mg ~ 65 in every liter of raw water, is uniformly mixed after 5 min with the stirring of 90 r/min rates, inhales The attached time is 20 min ~ 30min.

6. such as claim 1 and a kind of water treatment technology for coping with sudden aniline pollution as claimed in claim 4, feature exists In KMnO in every liter of raw water₄ Dosage be the mg of 2.4 mg ~ 3.0, oxidization time be 30 min ~ 50min.

7. such as claim 1, claim 2 and a kind of water process skill for coping with sudden aniline pollution as claimed in claim 3 Art, which is characterized in that ultrafiltration membrane system handles the time as the min of 30 min ~ 45.