CN1161288C - Method of treated sewage being utilized as compensation water of cooling system - Google Patents
Method of treated sewage being utilized as compensation water of cooling system Download PDFInfo
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- CN1161288C CN1161288C CNB011333774A CN01133377A CN1161288C CN 1161288 C CN1161288 C CN 1161288C CN B011333774 A CNB011333774 A CN B011333774A CN 01133377 A CN01133377 A CN 01133377A CN 1161288 C CN1161288 C CN 1161288C
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Abstract
The present invention relates to a method for treating sewage as compensation water of a cooling system, which belongs to the technical field of treatment and reutilization of industrial wastewater. The present invention mainly solves the economical problem of a wastewater treatment and reutilization technique in the prior art. Drained wastewater which is in secondary biological treatment through an industrial wastewater treatment field is in three-stage filtering treatment composed of high-efficiency fibers, activated carbon fibers and high-efficiency deaminizing agents, the water quality of the purified water is stably maintained, the content of suspended substances is less than 10 mg/L, the microbes and the odour substances are completely eliminated, the COD content is less than 20 mg/L, and the content of ammonia nitrogen is less than 3 mg/L. The wastewater is recycled as compensation water of a recirculating cooling water system. The recovery rate of wastewater is more than 85%. The method of the present invention has the advantages of simple treating flow, low operating cost and high water recovery rate, and simultaneously, the purposes of reducing industrial production water and reducing sewage drainage are achieved.
Description
1, technical field
The present invention relates to recycling method after a kind of waste water appropriateness purifying treatment, the treatment process that particularly is used for the recirculating cooling water system make up water after the waste water appropriateness purifying treatment, specifically industrial sewage is handled the waste discharge of field after secondary biochemical treatment and carry out appropriate purifying treatment, make it reach the water quality requirement of recirculating cooling water system make up water, be back to recirculating cooling water system, all or part of alternative industrial fresh water is done the make up water of recirculating cooling water system.The inventive method belongs to wastewater treatment reutilization technology field.
2, background technology
The water consumption of Industrial processes is huge, accounts for more than 20% of the total consumption of present water greatly, and along with the fast development of industry, the share of process water also will continue to increase.Because the shortage day by day of water resources, the water saving particularly water saving in Industrial processes has become an important task.Show by water using analysis Industrial processes, replenishing of recirculating cooling water system occupies very big share with fresh water amount, as investigating according to recent water to factory of China petrochemical refining, the make up water of recirculating cooling water system accounts for the 20%-40% of the total fresh water consumption of refinery, and the make up water that therefore reduces recirculating cooling water system has great importance to reducing process water.And the reuse of industrial sewage appropriateness purifying treatment can reduce quantity of wastewater effluent, saves the fresh water consumption again simultaneously, is the effective measure of killing two birds with one stone.It is COD＜20mg/L that industrial sewage reclaims the basic demand that is used for make up water, NH
3-N＜3mg/L, suspended substance＜10mg/L.
For many years, the make up water route that recirculating cooling water system is done in reuse after industrial sewage appropriateness the purifying treatment reuse, particularly purifying treatment is paid attention to by many investigators always.Handle reuse technology research etc. as industrial sewage being handled a secondary biochemical draining by appropriateness such as COD in sedimentation, filtration, the charcoal absorption water.Yet charcoal absorption exists following shortcoming: 1, specific surface area and pore volume are little, and be low to the organism loading capacity.2, pore size distribution is wide, macropore (＞50nm), mesopore (2.0-50nm) and micropore (＜2.0nm) and deposit, organism need pass macropore, mesopore and micropore successively in the adsorption process, the adsorption and diffusion resistance is big, inhales, desorption rate is slow.3, poor to the low-concentration organic absorption property.4, the surface is inhomogeneous, flexible poor, is prone to problems such as efflorescence, the loosening groove that produces of filling and sedimentation in the application; 5, the saturated regeneration difficulty of absorption, because surface property has determined the regeneration of gac to need 540-940 ℃ high temperature, the regeneration loss rate increases processing costs up to 7%-10% each time.
The sewage-farm water outlet lower for ammonia-nitrogen content, that ammonia/ammonium value is low, the general ion-exchange techniques that adopts is handled, proposed to handle the lower concentration ammoniated wastewater as US4695387, US4344851 etc. with natural or synthetic zeolite selective adsorption exchange, under suitable pH condition, ammonium ion is preferentially adsorbed on the zeolite, adsorbs saturated back with containing certain density Na
+Salt pair zeolite regeneration, regenerated liquid carry out the air stripping again to be handled.Yet the shortcoming of this method is: natural zeolite ammonium ion loading capacity is low; Although synthetic zeolite has higher loading capacity, but the problem that has the regeneration aspect: because the typical silicon-aluminum structure of zeolite, with the easy structure of destroying zeolite of highly basic regeneration, the cycle of operation is shortened, so must reduce the basicity of regenerated liquid in the regenerative process or use neutral Na
+Salt regeneration makes that the regenerated liquid consumption is bigger, and the ammonium in the waste water can't obtain highly concentrated, brings difficulty for the air stripping processing of back regenerated liquid.US4477355 propose a kind of cationic zeolite resin and a kind of contain quaternary ammonium functional group type strongly basic anion exchange resin adsorb respectively exchange in the sanitary wastewater ammonium and the method for phosphate anion, adsorb and use certain density neutral Na respectively after saturated
+Salt makes resin obtain regeneration, after two kinds of regenerated liquids are mixed, adds certain density magnesium salt solution, forms MgNH
4PO
4The mixture precipitation is used as composite chemical fertilizer.Yet this method is used for existing in the processing of industrial sewage secondary biochemical treatment draining ammonium following shortcoming: 1, total P content is very low in the secondary biochemical treatment draining, need add a large amount of phosphate radicals; 2, being used to adsorb the zeolite resin that exchanges ammonium ion can not regenerate under high basicity regenerated liquid, and regenerated liquid not only consumption is big, and ammonium ion can't obtain high density and concentrate, and is MgNH
4PO
4The preparation of composite fertilizer brings technology and economy problems.
3, summary of the invention
How problem to be solved by this invention is for utilizing trade effluent again after handling simply, economically.The object of the present invention is to provide a kind of good economy performance, flow process simply industrial sewage to be handled a secondary biochemical treatment draining purifying treatment is the method for recirculated cooling water make up water.
Treatment process proposed by the invention mainly by fiber, activated carbon fiber, take off three sections strainers that the ammonium agent forms and form, wherein the ammonium agent of taking off used of the 3rd section strainer is Na
+The type storng-acid cation exchange resin takes off ammonium agent saturated back employing and contains Na
+Basic solution regenerate.
The present invention program can reach following effective effect:
1, industrial sewage can be handled a secondary biochemical treatment draining and effectively purify, reach the water quality requirement of circulating water system, water rate of recovery height can reach more than 85%, has effectively saved water resources, has reduced quantity of wastewater effluent simultaneously, has the good environment benefit.
2, scheme is simple, and flow process is short, invests lowly, and working cost is low, has good and economic.
3, the high efficiency active carbon fiber of Shi Yonging has the microvoid structure of singlet state, huge specific surface area and multiple functional group, effect with physical adsorption, chemisorption and physics and chemisorption, the organism sorptive power is carried out at efficient, heavy body, under high-speed, make this technology have more practicality.
4, select Na for use
+The type storng-acid cation exchange resin is for taking off the ammonium agent, and its loading capacity and selectivity height are even exist other impurity of higher concentration simultaneously, as Ca in the waste water
2+, Mg
2+, and Na
+Under situation, the absorption switching performance of ammonium radical ion is not still produced obvious influence, suction, the desorption exchange energy of ammonium radical ion are carried out under higher speed simultaneously, and this is the basic guarantee that this technology is achieved.
5, the regeneration soln that takes off the ammonium agent be have certain alkalescence contain sodium ion solution, sodium ion wherein plays the ion exchange regenerant effect, the hydroxide ion that wherein contains simultaneously makes the ammonium ion after the exchange become amino molecule, reduce the ammonium concentration in the regenerated liquid, help improving reproduction speed, in addition hydroxide ion also can be directly with take off the ammonium ion that adsorbs in the ammonium agent and become amino molecule and enter in the regenerated liquid, so regeneration speed further improves.Use this characteristic renovation process that takes off the ammonium agent, guarantee carrying out smoothly of sewage purification process on the one hand, can also reclaim wherein available resource in addition, environment is not produced secondary pollution, the regenerated liquid consumption is low, and further the expense of handling is low.
4, description of drawings
Fig. 1 is the schematic flow sheet that industrial waste water purifying of the present invention is handled, and the secondary biochemical water outlet can be used as industrial circulating cooling water after through three sections strainers, and the filtration medium of three sections strainers can repeated regeneration.
5, embodiment
Following mask body is introduced the filtration medium and the effect thereof of three sections strainers, and the operation of each strainer and regeneration condition etc.
First section strainer of the present invention loads a kind of high-efficiency fiber beam material, can adopt this area universal fibre beam filter device, mainly form as strainer, filter and clean and to adopt common operating method and condition by fixedly porous plate, fibrous bundle, active multi-hole plate, air distribution plate etc.As common operational condition be: filter operation pressure is is 5～10 minutes, rinse water pressure 0.2-0.6MPa, rinse water flow velocity 20-30m/h 0.2-0.6MPa, filtration velocity 20-50m/h, the waste water residence time in bed, clean with air pressure 0.5-0.6MPa, clean with air intensity 0.04-0.06m
3/ m
2.s, the process cleaning water consumption is the 2%-5% of wastewater treatment capacity etc.The suspension that regeneration produces is further handled through dehydration or after not dewatering.Filter by first section strainer of the present invention, the suspended substance that industrial sewage is handled in the secondary biochemical treatment draining is reduced to below the 10mg/L by 100-200mg/L, makes the polymer microorganism in the waste water obtain partly removing simultaneously again.
Second section strainer of the present invention loads a kind of activated carbon fiber, is used for removing organic pollutant and the whole stink material of residue through waste water after first section filter process.This activated carbon fiber is by usual method preparation, as being raw material with a kind of in Mierocrystalline cellulose, resol, polyvinyl alcohol, artificial silk, coal-tar pitch, the waste cotton yarn etc., makes activated carbon fiber through carbonization and activation, is loaded in second section strainer.Strainer can adopt conventional design, as mainly being made up of activated carbon fiber, water distribution board, supporting screening plate and hot air system, superheated vapour system etc.After activated carbon fiber absorption is saturated, adopt the alternately regeneration of washing water of superheated vapour, air or warm air and trace, the activated carbon fiber absorption property is restored.High-enriched organics of being born again and stink material feed incinerator or reclaim the organism device and further handle or reclaim.Filter operation pressure 0.0-0.6MPa, filtration velocity 20-50m/h, the residence time of waste water in bed are 5～10 minutes, rinse water pressure 0.1-0.6MPa, rinse water flow velocity 5-20m/h, regeneration with air themperature normal temperature-80 ℃, pressure 0.2-0.6MPa, intensity 0.04-0.06m
3/ m
2.s, 200-250 ℃ of superheat steam temperature of regeneration, pressure 0.3-0.6MPa, intensity 0.04-0.06m
3/ m
2.s.Steam and air regenesis and washing water regeneration hocket, and the time of logical steam and air is 5～30 minutes, leads to 1～5 minute of washing water time, and process is carried out 1～5 time.The process cleaning water consumption is the 2%-5% of wastewater treatment capacity, and the sorbent material life cycle can reach 10000 times, COD active adsorption amount＞300mg/g sorbent material.Filter by second section strainer of the present invention, purification water outlet COD is reduced to below the 20mg/L by 100-150mg/L, the stink material is eliminated fully.
The 3rd section strainer of the present invention loads a kind of Na
+The type storng-acid cation exchange resin efficiently take off the ammonium agent.The essential property and the salient features of efficiently taking off the ammonium agent see Table 1.
Table 1
| The performance of resin: matrix styrene-divinylbenzene copolymer functional group sulfonic group total exchange capacity＞2.0 eq/L ammonium radical ion exchange capacity 30～40mg/g (dry weight) |
Strainer can adopt common ion-exchanger form, as adverse current bed, floating bed or full chamber bed etc., the regeneration of efficiently taking off the ammonium agent can be regenerated in vivo, external regeneration, can cyclic regeneration, also can super regeneration, operation and reconstituted form can require specific design to determine according to unit scale etc.The absorption exchange velocity reaches 15-25m/h, and the residence time of waste water in bed is 15～30 minutes.Consideration is efficiently taken off the processing of ammonium agent regeneration back regenerated liquid and the recycling of ammonium/ammonia to the present invention, and the present invention proposes to use and contains Na
+Basic solution is regenerated, and contains Na
+The Na of solution
+Come from and contain the sodium soluble compounds, as sodium hydroxide, sodium-chlor, sodium sulfate, Sodium phosphate dibasic, sodium phosphate, sodium hydrogen phosphate, SODIUM PHOSPHATE, MONOBASIC, yellow soda ash, sodium bicarbonate etc., specifically can adopt following three kinds of regeneration treating methods: 1, regenerate with the strong base solution of weight concentration 5%～10%, as use sodium hydroxide solution to regenerate, the regenerated liquid that contains free state ammonia carries out steam stripped and handles recovery high density ammoniacal liquor or ammonium salt, steam stripped purifies alkali lye after replenishing an amount of alkali, and circulation is done and efficiently taken off ammonium agent regenerated liquid.2, with the regeneration of neutral sodium-salt (as sodium-chlor, sodium sulfate etc.) solution, wherein the content of neutral sodium-salt is 10% to saturation capacity, regulate more than the regenerated liquid pH to 12 with highly basic, the regenerated liquid that contains free state ammonia carries out steam stripped and handles recovery high density ammoniacal liquor or ammonium salt, steam stripped is purified waste water after replenishing an amount of alkali, and circulation is done and efficiently taken off ammonium agent regenerated liquid.3, with 10%～saturated Sodium phosphate dibasic (or sodium phosphate, sodium hydrogen phosphate, SODIUM PHOSPHATE, MONOBASIC etc.) salts solution and allocate an amount of highly basic into the pH value is adjusted to more than 11, form regenerated liquid regeneration, after regeneration, contain and add an amount of magnesium salts in the regenerated liquid of free state ammonia, accurately the pH value of regulator solution makes it to keep 8.5 to 9.5 again, forms MgNH
4PO
4Composite precipitation is by filtration, dewatering and recovery MgNH
4PO
4Composite fertilizer, the precipitation supernatant liquor loops back in the strainer to be handled.The reproduction speed of above-mentioned regeneration is that 2～5m/h.m3 takes off the ammonium agent.Exchange and selected renovation process by the ammonium agent absorption of efficiently taking off proposed by the invention, making ammonium in the waste water obtain appropriateness removes, make ammonium ion obtain high density simultaneously and concentrate recovery, ammonium concentration can reach about 4000mg/L generally speaking, greatly reduces the working cost that purification of waste water is handled.Industrial sewage is handled a secondary biochemical treatment draining and is entered the 3rd section strainer carry out efficient selective and take off ammonium and handle after first, second section strainer appropriateness of the present invention removes suspended substance, microorganism, stink material, organic pollutant, makes to purify water outlet NH
3-N is reduced to below the 3mg/L by being not more than 100mg/L, the COD＜20mg/L that purifies waste water simultaneously, and suspended substance＜10mg/L reaches the water quality requirement of circulating water system.
The object of the inventive method suitable treatment comprises other water source that industrial sewage is handled a secondary biochemical treatment draining and had similarity, but the water quality for the treatment of water is generally suspended substance 100-200mg/L, COD100-150mg/L, NH
3-N is not higher than 100mg/L, and certainly, if come water water quality to surpass above-mentioned scope or below These parameters, the method that can take to adjust operating parameters meets the demands, operational condition can be carried out the normal experiment design according to the concrete water quality of coming water.This technology can also be adjusted flexibly according to the different water water quality of coming, if come the suspended substance of water less, can remove the scale of fabric filter or minimizing fabric filter, if come not contain in the water NH
3-N, then the 3rd section process device can save etc.
Embodiment 1
Adopt treatment process of the present invention that domestic certain industrial sewage is handled a secondary biochemical draining and handle, the main character of waste water is: suspended substance 102mg/L, COD112mg/L, NH
3-N46mg/L, pH6-8, waste water contain serious foul odour.The strainer 1 body diameter 100mm that is adopted, fibrous bundle packing height 800mm; Strainer 2 body diameter 100mm adopt asphalt based active carbon fiber filled height 1200mm, loadings 750g; Strainer 3 body diameter 169mm, taking off the ammonium agent is matrix with the styrene-divinylbenzene copolymer, with the sulfonic group functional group, its total exchange capacity 2.5eq/L, ammonium radical ion exchange capacity 40mg/g (dry weight), packing height 1500mm, loadings 42500g.Above-mentioned waste water is filtered by three sections strainers of the present invention successively, and the waste water flow velocity is controlled at 25m/h, 20m/h, 15m/h respectively.Through 3,5, after the smooth running of 10h, to the water outlet sampling analysis after three sections filtrations, the average water outlet of strainer 1 is: suspended substance 6.8mg/L, COD109mg/L, NH
3-N46mg/L, the reduction of water outlet stink; The average water outlet of strainer 2 is: suspended substance 5.8mg/L, COD12.9mg/L, NH
3-N44.6mg/L, the limpid free from extraneous odour of water outlet; The average water outlet of strainer 3 is: suspended substance 3.2mg/L, COD12.0mg/L, NH
3-N can't check, the limpid free from extraneous odour of water outlet.Reached the purpose that appropriateness is purified liquid waste by the inventive method.
Embodiment 2
Behind the wastewater treatment 16h to embodiment 1, to the high-efficiency fiber Shu Jinhang cleaning and regeneration of strainer 1, stop into water after owing to eliminated the hydrodynamicpressure of water, make fiber reach rarefaction, feed 0.05m by strainer 1 bottom air distribution plate
3/ m
2.s 0.5MPa air by the 0.4MPa washing water (filtration water outlet) of strainer 1 top water distribution board feeding flow velocity 20m/h, gathers under diffusing and the hydrodynamic cleaning at bubble simultaneously, makes fiber vertically be in continuous dither state, and cleaning process keeps 20min.The cleaning water outlet is limpid, shows that filtrate cleans fully.Cleaning water consumption is 2% of a wastewater treatment capacity.
Embodiment 3
Behind the wastewater treatment 16h to embodiment 1, the activated carbon fiber of strainer 2 is regenerated, stop into water after, feed the air of 0.3MPa by strainer 2 bottom air distribution plates, keep intensity 0.05m
3/ m
2.s descend 30s, squeeze out remaining waste water in the strainer 2 to the raw water surge tank, feed 250 ℃ superheated vapour (pressure 0.3MPa, intensity 0.04m simultaneously
3/ m
2.s) and air (the intensity 0.04m of 0.3MPa
3/ m
2.s), feed washing water (pressure 0.3MPa, flow velocity 10m/h) the novel absorbent charcoal fiber of alternately regenerating by strainer top again, the time of logical steam and air is 10 minutes, 2 minutes of logical washing water time, process carries out twice, continues 24 minutes altogether, and the carbon fiber adsorption and catalytic combustion performance is recovered.Cleaning process water consumption is 2% of wastewater treatment capacity.
Embodiment 4
Strainer 3 efficiently take off ammonium agent renovation process 1.Behind the wastewater treatment 16h to embodiment 1, internal regeneration is carried out in the ammonium agent of efficiently taking off to strainer 3, after stopping into water, at first feed backwashing water (filtration water outlet) by strainer 3 top air distribution plates, keep water flow velocity 50m/h, flush time 10min makes in the bed partial impurities obtain removing, and makes and efficiently take off the ammonium agent in the bed and keep loose.After stopping back flushing, by the NaOH regeneration soln of strainer 3 top air distribution plates feedings 5%, (with filtering the water outlet preparation) is with 2m/h.m
3Take off the flow velocity regeneration of ammonium agent, recovery time 6h makes NH in the final regenerated liquid
3-N can't check, and shows that regeneration fully.Feed the wash water (filtration water outlet) by strainer 3 bottom air distribution plates again, keep water flow velocity 60m/h, flush time 20min removes remaining alkali lye in the bed, makes water outlet pH keep neutral.Regenerated liquid (the NH that will contain free state ammonia
3-N content is 4000mg/L) carry out steam stripped processing recovery high density ammoniacal liquor or ammonium salt, steam stripped purifies alkali lye after replenishing a spot of alkali, and the regenerated liquid that efficiently takes off the ammonium agent is done in circulation.Being used for efficiently taking off ammonium agent regenerated alkali lye amount in this process is 2 times (this example is 70L) of taking off ammonium agent admission space, and the water total amount that is used for back flushing and cleaning is 2 times (this example is 70L) of taking off ammonium agent admission space.
Embodiment 5
Strainer 3 efficiently take off ammonium agent renovation process 2.Behind the wastewater treatment 16h to embodiment 1, internal regeneration is carried out in the ammonium agent of efficiently taking off to strainer 3, after stopping into water, at first feed backwashing water (filtration water outlet) by strainer 3 top air distribution plates, keep water flow velocity 60m/h, flush time 10min makes in the bed partial impurities obtain removing, and makes and efficiently take off the ammonium agent in the bed and keep loose.After stopping back flushing, feed 10% sodium chloride solution (prepare with filtering water outlet, and in solution, add small amounts of sodium hydroxide, make pH to 12) regeneration by strainer 3 top air distribution plates, with 3m/h.m
3Take off the flow velocity regeneration of ammonium agent, recovery time 4.5h makes NH in the final regenerated liquid
3-N can't check, and shows that regeneration fully.Feed the wash water (filtration water outlet) by strainer 3 bottom air distribution plates again, keep water flow velocity 50m/h, flush time 20min removes remaining regenerated liquid in the bed, makes water outlet pH keep neutral.Regenerated liquid (the NH that will contain free state ammonia
3-N content is 3550mg/L) carry out steam stripped processing recovery high density ammoniacal liquor or ammonium salt, steam stripped purifies alkali lye after replenishing a spot of alkali, and the regenerated liquid that efficiently takes off the ammonium agent is done in circulation.Being used for efficiently taking off ammonium agent regenerated alkali lye amount in this process is 2.25 times (this example is 79L) of taking off ammonium agent admission space, and the water total amount that is used for back flushing and cleaning is 2 times (this example is 70L) of taking off ammonium agent admission space.
Embodiment 6
Strainer 3 efficiently take off ammonium agent renovation process 3.Behind the wastewater treatment 16h to embodiment 1, internal regeneration is carried out in the ammonium agent of efficiently taking off to strainer 3, after stopping into water, at first feed backwashing water (filtration water outlet) by strainer 3 top air distribution plates, keep water flow velocity 40m/h, flush time 10min makes in the bed partial impurities obtain removing, and makes and efficiently take off the ammonium agent in the bed and keep loose.After stopping back flushing, feed with 3% Sodium phosphate dibasic salts solution (prepare with filtering water outlet, and in solution, add small amounts of sodium hydroxide, make pH to 12), with 3m/h.m by strainer 3 top air distribution plates
3Take off the flow velocity regeneration of ammonium agent, recovery time 4.5h makes NH in the final regenerated liquid
3-N can't check, and shows that regeneration fully.Feed the wash water (filtration water outlet) by strainer 3 bottom air distribution plates again, keep water flow velocity 40m/h, flush time 20min removes remaining regenerated liquid in the bed, makes water outlet pH keep neutral.To (contain NH to the regenerated liquid after the regeneration
3-N measures 3500mg/L) the middle magnesium chloride magnesium salts that adds equimolar amount, with the pH value of the accurate regulator solution of sodium hydroxide lye, make it to keep 9 again, after fully stirring, sedimentation 4h forms MgNH
4PO
4Composite precipitation is by filtration, dewatering and recovery MgNH
4PO
4Composite fertilizer's (purity is 98% by analysis), the precipitation supernatant liquor loops back in the strainer to be handled.Being used for efficiently taking off ammonium agent regenerated regeneration liquid measure in this process is 2.3 times (this example is 80L) of taking off ammonium agent admission space, and the water total amount that is used for back flushing and cleaning is 2 times (this example is 70L) of taking off ammonium agent admission space.
Claims (10)
1, a kind of sewage is used for the treatment process of cooling system make up water, it is characterized in that comprising fabric filter, the fiber filter of activated carbon, takes off three sections compositions of ammonium agent strainer, and wherein taking off the ammonium agent is Na
+The type storng-acid cation exchange resin takes off ammonium agent saturated back employing and contains Na
+Basic solution regenerate.
2, the method that is used for the cooling system make up water according to the described sewage of claim 1, it is characterized in that the described first section fibre strainer is made up of fixedly porous plate, fibrous bundle, active multi-hole plate, air distribution plate, the working pressure of strainer is that 0.2-0.6MPa, filtration velocity 20-50m/h, the waste water residence time in bed is 5～10 minutes during filtration; Rinse water pressure 0.2-0.6MPa, rinse water flow velocity 20-30m/h, cleaning air pressure 0.5-0.6MPa, cleaning air intensity 0.04-0.06m during cleaning
3/ m
2.s, the process cleaning water consumption is the 2%-5% of wastewater treatment capacity.
3, the method that is used for the cooling system make up water according to the described sewage of claim 1, it is characterized in that it is raw material with Mierocrystalline cellulose, resol, polyvinyl alcohol, artificial silk, coal-tar pitch or waste cotton yarn that described second section strainer loads a kind of, through carbonization and the activated carbon fiber made of activation, strainer is made up of activated carbon fiber, water distribution board, supporting screening plate and air system, superheated vapour system, and regeneration is superheated vapour, air or warm air and alternately regeneration of washing water.
4, the method that is used for the cooling system make up water according to the described sewage of claim 3 is characterized in that described second section strainer filter operation condition is that working pressure 0.0-0.6MPa, filtration velocity 20-50m/h, the waste water residence time in bed is 5～10 minutes; Operational condition is rinse water pressure 0.1-0.6MPa, rinse water flow velocity 5-20m/h, air themperature normal temperature-80 ℃, pressure 0.2-0.6MPa, intensity 0.04-0.06m during regeneration
3/ m
2.s, superheat steam temperature 200-250 ℃, pressure 0.3-0.6MPa, intensity 0.04-0.06m
3/ m
2.s.
5, the method that is used for the cooling system make up water according to the described sewage of claim 4, it is characterized in that the described steam and air regenesis and washing water regeneration of being regenerated as hockets, the time of logical steam and air is 5～30 minutes, and the time of logical washing water is 1～5 minute, and process is carried out 1～5 time.
6, the method that is used for the cooling system make up water according to the described sewage of claim 1 is characterized in that the Na that described the 3rd section strainer loads
+The type storng-acid cation exchange resin has following character: be matrix with the styrene-divinylbenzene copolymer, with the sulfonic group is functional group, total exchange capacity is greater than＞2.0eq/L, ammonium radical ion exchange capacity is 30～40mg/g, the absorption exchange velocity is 15-25m/h, and the residence time of waste water in bed is 15～30 minutes.
7, the method that is used for the cooling system make up water according to the described sewage of claim 1 is characterized in that describedly taking off the ammonium agent and using 5%6～10% strong base solution to regenerate, and regenerated liquid carries out gas to be carried, and the gas extract recycles.
8, the method that is used for the cooling system make up water according to the described sewage of claim 1, it is characterized in that the described ammonium agent use neutral sodium-salt solution regeneration of taking off, wherein the content of neutral sodium-salt is 10% to saturation capacity, and regulates more than the regenerated liquid pH to 12 with highly basic, and circulation fluid recycles.
9, the method that is used for the cooling system make up water according to the described sewage of claim 1, it is characterized in that describedly taking off the ammonium agent and using 10%～saturated Sodium phosphate dibasic, sodium phosphate, sodium hydrogen phosphate, biphosphate sodium salt solution to regenerate, and the pH value is adjusted to more than 11 with highly basic, in regenerated liquid, add magnesium salts, the pH value of regulator solution is 8.5～9.5, forms MgNH
4PO
4Composite precipitation reclaims MgNH then
4PO
4Composite fertilizer.
10, the method that is used for the cooling system make up water according to claim 7,8 or 9 described sewage is characterized in that described reproduction speed is 2～5m/h.m
3Take off the ammonium agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011333774A CN1161288C (en) | 2001-10-30 | 2001-10-30 | Method of treated sewage being utilized as compensation water of cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011333774A CN1161288C (en) | 2001-10-30 | 2001-10-30 | Method of treated sewage being utilized as compensation water of cooling system |
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|---|---|
| CN1415563A CN1415563A (en) | 2003-05-07 |
| CN1161288C true CN1161288C (en) | 2004-08-11 |
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|---|---|---|---|
| CNB011333774A Expired - Lifetime CN1161288C (en) | 2001-10-30 | 2001-10-30 | Method of treated sewage being utilized as compensation water of cooling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103011449B (en) * | 2012-11-30 | 2016-03-02 | 无锡展华科技有限公司 | The water charging system of water circulation cooling device and method |
| CN105085722A (en) * | 2015-08-12 | 2015-11-25 | 内蒙古蒙维科技有限公司 | Method for removing foreign ions in polyvinyl alcohol aqueous solution |
| CN110054315A (en) * | 2019-03-28 | 2019-07-26 | 浙江理工大学 | A kind of method that quick adsorption removes ammonia nitrogen in dyeing waste water |
| CN115557564A (en) * | 2022-09-13 | 2023-01-03 | 上海电力大学 | Efficient and rapid denitrification device and process |
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2001
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