CN101164923A - Integrated printing and dyeing waste water treatment process - Google Patents
Integrated printing and dyeing waste water treatment process Download PDFInfo
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Abstract
This invention relates to a comprehensive process for treating dye waste-water comprising: pretreatment, biochemical treatment and wastesludge treatment. In the pretreatment, high efficiency water quality modulation agent is used for the reactions of: complexation with the organic substances, hydration, hydrolyzation and neutralization to reduce the content of soluble substances being of difficult to be degradation lowering alkalinity, reducing heavy metal ions. After that it is subjected to anaerobic treatment, where the devulcanization makes the decolourization of the dye and reducing COD content, the ion of Fe2+ reacts with S2-(the devulcanization product) to produce non-soluble sulfides. The residual of modulation agent in coordination with aerobic microganism proceed further biological reaction to increase the biochemical treatment effect. The effluent after thus treatment can be direct drained, meeting the national standards.
Description
Technical field
The present invention relates to a kind of treatment process of dyeing waste water, the integrated printing and dyeing waste water treatment process of particularly a kind of integrated water quality conditioning, acidification hydrolization, intelligent oxygen supply aeration.
Technical background
Along with urbanization and industrialized development, water pollution problems becomes increasingly conspicuous, and wherein dyeing waste water is one of main trade effluent of China, has characteristics such as the water yield is big, colourity is high, complicated component, and environment is caused serious pollution.At present, the treatment process of dyeing waste water mainly contains chemical coagulation process, biochemical treatment process and physical treatment process, and chemical coagulation process adopts the coagulating agent based on magnesium salts and molysite, and its technology is simple, and cost is low, but causes secondary pollution easily; Biochemical treatment process is the main at present method that adopts, but not ideal enough on decolorizing effect; Physical treatment process adopts gac or diatomite, and processing cost is too high, is difficult to promote and large-scale application.Therefore, many water treatment units take biochemical treatment and materialization to handle the associating use more, in the hope of reaching the optimum handling effect, the process integration of " pre-treatment+anaerobism+aerobic+coagulating sedimentation " shown in reference accompanying drawing 1, comprise: 1, pre-treatment: the inlet water lifting pumps room that pre-treatment comprises equalization pond, equalizing tank and matches, equalizing tank plays water quality simultaneously and acts on uniformly based on regulating pondage; 2, biochemical treatment: comprise anaerobic treatment and aerobic treatment, wherein anaerobic treatment comprises anaerobic pond, intermediate sedimentation pond and the sludge reflux pump room that matches, rush in the disadvantageous effect of the variation of water water quality by regulating to ease up, the pH value of sewage is reduced aerobic treatment; The material and the coloring matter of some difficult for biological degradation in the sewage are transformed, thereby improve clearance and the percent of decolourization of aerobic portion C OD; Reduce the surplus sludge volume of biochemical treatment system, reduce the sludge treatment equipment scale, the most of organism in the oxygen animalcule removal sewage by blast aeration, is made good use of in air blast machine room and sludge reflux pump room that aerobic treatment comprises aeration tank, second pond and matches; 3, materialization is handled: comprise between flocculation sedimentation tank and supporting dosing, storage medicine pond etc.Do not exceed standard owing to still reach emission request or the colourity of 180mg/L through the water outlet COD after the anaerobic-aerobic biochemical treatment, need carry out coagulating treatment, make COD, colourity back up to standard safety dumping by adding flocculation medicaments such as Tai-Ace S 150; 4, follow-up sludge treatment: comprise concentration basin, mud storage pool, and jumbo mud stack up yard, to biochemical, materialization handle that the excess sludge that produces concentrates, dehydration and landfill disposal.
The sewage treatment process that this associating biochemical treatment and materialization are handled, water-quality COD after treatment, colourity etc. basically can be up to standard, but treating processes is comparatively complicated, processing efficiency reduces, be difficult to satisfy the needs of designed capacity, and owing to before the biochemical treatment sewage quality is nursed one's health, cause biochemical treatment easily to be hit, the medicament, the electric energy that are consumed in biochemical treatment and materialization treating processes are higher, the processed in units cost is increased, therefore, how existing sewage treatment process being carried out synergy, consumption reduction, is the problem that present sewage disposal generally faces.
Summary of the invention
For addressing the above problem, purpose of the present invention aims to provide the integrated printing and dyeing waste water treatment process of a kind of high-level efficiency, less energy-consumption.
The present invention is achieved through the following technical solutions above-mentioned purpose, and a kind of integrated printing and dyeing waste water treatment process may further comprise the steps:
1, pre-treatment: sewage is through grid, equalizing tank, enter in the efficient sedimentation tank after, add efficient water quality amendment sewage quality nursed one's health.
1., efficient water quality amendment
Dyeing waste water is owing to its COD, pH value are higher, contain various a large amount of hardly degraded organic substances, as the dyestuff that exists with higher alkane, ester class, with molecular state or ionic state, reach the stronger organism of toxicity such as sulfur-bearing, nitro, therefore, if directly carry out biochemical treatment, high pH value makes the anaerobic technique section be difficult to play a role, thereby aerobic process section pressure, load are increased, at this situation, the present invention has added water quality conditioning technology in pre-treatment, shown in the efficient water quality amendment table composed as follows that adopts in the water quality conditioning technology:
The consumption of efficient water quality amendment is 100mg/L～900mg/L, is preferably 250mg/L～750mg/L, preferred especially 400mg/L～500mg/L.
Efficient water quality amendment can adopt existing water treatment agent such as Zhejiang University's medicament, also can allocate voluntarily according to above-mentioned composition, the invention provides a kind of preparation method of preferable efficient water quality amendment, promptly utilize the sludge residue that produces after the treatment of dyeing wastewater to prepare above-mentioned water quality amendment, owing to contain a large amount of Fe in the dyeing waste water sludge
2+, and Fe
2+Be again the main component as efficient water quality amendment, solved the disposal difficulties of mud so on the one hand, make resource recycling on the other hand, form the material cycle of whole printing-dyeing waste water treatment process, concrete preparation technology is as follows:
A, acidleach: in reaction utensil, press 15～30molH
+/ kg ratio adds sludge residue, leaches acid and water, the stirring and refluxing reaction, and temperature of reaction is 80～150 ℃, and the reaction times is 1～5 hour, and liquid-solid ratio is controlled to be 2～5ml/g.
Described sludge residue is meant the mud that sewage work handles through biochemical treatment or materialization, and 650 ℃ of roasting temperatures are 4 hours in stoving oven, and after the cooling, pulverizing forms.
Described leaching acid is used as leaching agent and (is mainly iron with the metallic element that exists with solid form in the sludge incineration ash, contain small amount of aluminum, calcium, magnesium) effect, the form that metallic element is changed into soluble compound enters the aqueous solution, can select mineral acid or organic acid any one or any two kinds combination, preferred adopt at least a of hydrochloric acid in the mineral acid, sulfuric acid, nitric acid, be preferably the combination of hydrochloric acid and vitriolic especially.
Described reaction liquid-solid ratio is the ratio that adds acid and water cumulative volume and the grey quality of sludge incineration in the reaction system, is preferably 2.0～3.7ml/g, is preferably 2.0～3.0 especially.
Temperature of reaction preferably is controlled at 110～120 ℃, is preferably 115～120 ℃ especially;
Reaction times is preferably 2～4 hours, is preferably 2.5～3 hours especially;
B, filter residue: after the reaction soln after the acidleach filtered, filtrate was water treatment agent finished product just prepare the dilution proportion of 10mL water treatment agent by the 1g sludge residue after.
C, conditioning: just add an amount of solid solubility ferrous salt in the finished product at the above-mentioned medicament that makes, mix, get final product finished product.
2., the mechanism of action of efficient water quality amendment
Fe
2+Ion and water-soluble hardly degraded organic substance such as reactive dyestuffs or cationic dyestuff molecule generation complex reaction make S
IChange into insoluble substance, be convenient to remove.
At Fe
2+Under the effect of metal ion, unsettled part is destroyed.With the thioxine dyes is example, and chain-like structure one S one, one SX one, one SH in the thioxine dyes etc. has determined the dyeing behavior of dyestuff, but the sulphur chain is least stable, fracture back S
2-With formation FeS precipitation, rest part is still removed with the form of complex compound.
The reduction and detoxication effect: under anaerobe effect, make phenyl ring with-NO
2The groups converted stronger etc. toxicity is amido-NH
2Thereby, improve biodegradability.
Sulfonate functional groups can and cationic dyestuff or basic dyestuff ion on amino or other positively charged group between form hydrogen bond or ionic bond, can make positively charged dyestuff ion a large amount of assembly around its molecular chain, form new aggregate; Because dyestuff ionic radius is bigger than the gap between the phenyl ring on the molecular chain, the steric restriction effect can't be matched the sulfonic group on the phenyl ring with positively charged dyestuff ion by charge ratio, cause sulfonic having more than needed and make negative charge on the new aggregate particulate band, under the effect of amendment hydrolysate, can make it that cohesion and flocculation further take place and form alumen ustum and remove through precipitation.
H
+Or the hydrolysis of metal ion, the OH in the consume water
-Etc. basicity, the alkalescence of water is reduced, be convenient to bring into play the Degradation of microorganism.
Amendment with the microorganism coordinated, can continue to bring into play desulfurization detoxifcation, dealkalize, biocatalysis, chemical flocculation effect in the process procedure of follow-up biochemical treatment.
2, biochemical treatment: comprise anaerobic treatment and aerobic treatment, anaerobic treatment is taked annular pulling flow type acidification hydrolization pond, as accompanying drawing 4, shown in Figure 5, take two-layer up and down anaerobic zone 2 and settling region 3 to be arranged to one, lower floor is an anaerobic zone 2, by the impeller plug-flow, waste water is constantly moved in the mode of circulating, thereby reach the ballistic ability of change of water quality that reduces, improved the efficient of anaerobic reaction, and simplified the distribution design of water inlet and water outlet to the full extent, the upper strata is settling region 3,3 carries out three phase separation through the waste water of anaerobic zone in the settling region, supernatant liquor enters and carries out aerobic reaction in the aeration tank, aerobic reaction adopts intelligent oxygen system to carry out oxygen supply, and waste water discharges after the settling tank precipitation is up to standard after aerobic treatment.
3, sludge treatment: the mud in the settling tank enters into concentration basin through the mud pump house, carries out processed again through between sludge dewatering, is transported to sludge landfill then and carries out landfill.
The present invention adopts efficient water quality amendment by increase water quality conditioning technology in pre-treatment, by with organism generation complexing, hydration and hydrolysis, neutralization reaction, reduce water-soluble difficult biochemical substances content, the alkalescence of waste water is reduced greatly; Also make simultaneously the heavy metal ion in the water obtain removing, the waste water after conditioning further makes dye decolored, COD reduction, Fe by desulfurication under anaerobic environment
2+Ion and reversal of cure product S
2-Generate insoluble sulfide, reduce S
2-Bio-toxicity and oxygen requirement.Remaining amendment continues to play a role Fe in the aerobic process section
2+Ion is oxidized to high valence state, pH near the neutral situation under, with the microorganism coordinated, further strengthen biochemical reaction by the effect of catching of the net of iron ion hydrolysate, remove organic pollutant, thereby improved the efficient of biochemical treatment effectively, sewage after biochemical treatment need not to carry out materialization again and handles, and can reach emission standard, treatment effect is good, and the processed in units energy consumption reduces greatly.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is original sewage treatment process figure;
Fig. 2 is sewage treatment process figure of the present invention;
The change curve of CODcr before and after Fig. 3-1 water quality conditioning of the present invention;
BOD before and after Fig. 3-2 water quality conditioning of the present invention
5Change curve;
The change curve of B/C before and after Fig. 3-3 water quality conditioning of the present invention;
The change curve of NH3-N before and after Fig. 3-4 water quality conditioning of the present invention;
The change curve of TN before and after Fig. 3-5 water quality conditioning of the present invention;
The change curve of TP before and after Fig. 3-6 water quality conditioning of the present invention;
Fig. 3-7 water quality conditioning of the present invention PH and the graph of relation that adds dose;
The overall variation graphic representation of pH before and after Fig. 3-8 water quality conditioning of the present invention; (adding dose is 450mg/L);
Fig. 3-9 is the visible absorption graphic representation of former water and conditioning water outlet;
Fig. 3-10 is the graph of relation of conditioning sludge quantity and amendment consumption;
Fig. 3-11 is the change curve of three groups of biochemical treatment water outlet COD;
Fig. 3-12 is three groups of biochemical treatment effluent color dilution change curves;
Fig. 4 is the structural representation in acidification hydrolization of the present invention pond;
Fig. 5 is the A-A sectional view of Fig. 4;
Fig. 6 is the change list of the sludge yield before and after the conditioning;
Fig. 7 is for reaching biochemical COD amount of subduing and cost before and after the conditioning;
Fig. 8 is the cost of sewage disposal change list before and after the conditioning.
Embodiment
1, the embodiment of the invention adopts printing-dyeing waste water treatment process flow process shown in Figure 2, detailed process is as follows: sewage is through equalization pond, remove the part suspended substance behind the grid and enter into equalizing tank, be pumped in the efficient sedimentation tank through sump pump again, add efficient water quality amendment according to sewage quality by 100mg/L～900mg/L and carry out the water quality conditioning, the mud that efficient sedimentation tank produces is transported in the concentration basin, sewage enters into the acidification hydrolization pond and carries out anaerobic biological treatment, the sewage that comes out from the acidification hydrolization pond enters and carries out the aerobe processing in the aeration tank, with the organism in the further removal sewage, sewage is after aerobic treatment, get final product qualified discharge through the settling tank post precipitation, the mud and the mud in the settling tank that produce in the biochemical treatment process pump in the concentration basin through the mud pump house, processed through between sludge dewatering is transported to the sludge landfill landfill.
2, the dyeing waste water of selecting Shaoxing sewage work is analyzed as follows the water quality conditioning effect as subjects, aspect the conditioning effect evaluation, has established corresponding change of water quality evaluation analysis index and has mainly comprised CODcr, BOD
5, BOD
5/ CODcr and N, P nutrient inventory also carry out quantitative analysis to the resultant of nursing one's health (chemical sludge) simultaneously.
2.1 water-quality COD cr, BOD
5And BOD
5The variation of/CODcr
The variation of COD of sewage cr is shown in Fig. 3-1 before and after the conditioning, and sewage is after conditioning, and decline by a relatively large margin can appear in CODcr, and the COD of sewage cr before the conditioning does not fluctuate in 1409mg/L to 1742mg/L scope, and mean value is 1610mg/L; Conditioning back COD of sewage cr then fluctuates in 911mg/L to 1229mg/L scope, and mean value is 1065mg/L.On the whole, CODcr has on average reduced 545mg/L, has alleviated the pressure of biological treatment system.Wherein, the solubility COD 320mg/L that descended accounts for 59%; COD's 225mg/L that exists with suspended substance or colloidal form has descended, and accounts for 41%.
Water quality BOD before and after the conditioning
5And BOD
5The variation of/CODcr is respectively shown in Fig. 3-2 and Fig. 3-3: when CODcr significantly changes, and BOD
5Substantially remain unchanged, i.e. water quality BOD
5/ CODcr obviously improves.Water inlet BOD
5Be 439mg/L, water outlet is 424mg/L, has only reduced 15mg/L; Water quality B/C value then rises to 0.360 by 0.275, and biodegradability is obviously improved.This had both illustrated the BOD that exists in the water
5Almost completely be solubility, illustrate that also this water quality amendment has good selectivity.
2.1N, the nutraceutical variation of P
Nitrogen, phosphorus are the important nutrient in the biochemical treatment, and its variation may exert an influence to biological sewage treatment (especially having lacked the trade effluent of nitrogen phosphorus nutrition thing at this).
Shown in Fig. 3-4 and Fig. 3-5: after conditioning, NH
3-N is by the 16.58mg/L 19.36mg/L that rises, and TN all has the rising of certain amplitude by the 36.15mg/L 39.50mg/L that rises.This may be because partial nitro compound or other nitrogen-containing heterocycle compound are reduced or change into amine substance, do not get rid of yet the water quality amendment in process of production industrial waste bring.
Shown in Fig. 3-6: decline by a relatively large margin then can appear in the phosphorus in the sewage, and TP mean value drops to 4.17mg/L by 5.79mg/L, has lost nearly 1/3.
From Fig. 3-4～Fig. 3-6, conditioning makes NH
3-N, TN index make moderate progress; More to the TP removal, because phosphorus content relative deficiency in the waste water, this variation causes certain influence to follow-up biochemical treatment.
2.3PH value changes
Shown in Fig. 3-7 in the different variation tendencies that adds pH value under the dose: under the constant situation of raw water quality, the fall of pH value becomes positive correlation with the amendment consumption.Because the pH of dyeing waste water is higher, therefore, the use of water quality amendment has improved the running environment of postorder biochemical system preferably.
On the other hand, shown in Fig. 3-8: under the condition that the amendment consumption remains unchanged substantially, conditioning water quality pH can fluctuate with the variation of raw water quality.
It seems that totally the water quality pH after conditioning can effectively reduce.When the amendment consumption between 400 to 500mg/L, conditioning back pH generally can be reduced to below 10.5.PH drop to follow-up biochemical treatment such as anaerobic hydrolysis process section microorganism provides better living environment, help to improve biochemical efficiency.
2.4 sewage change in color
Colourity is the difficult point and the emphasis of treatment of dyeing wastewater always, shown in Fig. 3-9: after adding the water quality amendment, can reduce sewage colourity preferably.With the increase that adds dose, water colour will finally may slightly be pale green from the thin out yellow of original aterrimus, has transparency preferably.The result shows that dye species is more in the former water, chromonic material has multiple.After amendment was handled, the coloring matter in the sewage (mainly being printing dye) was removed step by step.At first be that lower hydrophobic dye of Zeta potential such as dispersed dye, substantive dyestuff, vat dyes, thioxine dyes are removed; Then be reactive dyestuffs, cationic dyestuff and the Fe that exists with molecule, ionic condition
2+, negatively charged ion such as sulfonic group, generate new colloid or suspended substance, remove continuing to add on the hydrolysate that is attracted to metal ion under the situation of water quality amendment sedimentation.Finally present Fe
2+Light green.On changing from the sewage absorbancy, difference adds the evident difference that exists of each curve dose under, has reflected the minimizing of being with color substance substantially, and itself and amendment consumption are closely related.
2.5 sludge yield changes
Sewage is after conditioning, and corresponding variation will appear in the sludge yield of entire sewage treatment process.On the one hand, can produce a large amount of pre-treatment mud after the increase conditioning; On the other hand, be subjected to the influence of water quality conditioning, the biochemical system sludge output can obviously descend, and follow-up in addition materialized mud can not reduce even generation yet.
Under the condition that water sample remains unchanged, when promptly not being subjected to water quality impact, the relation of conditioning sludge quantity and amendment consumption is substantially shown in Fig. 3-10: from the conditioning test-results, the pre-treatment sludge yield is directly proportional with the CODcr amplitude of being removed.Because removal amplitude and the amendment consumption linear relationship of CODcr are better, thereby sludge output becomes tangible linear ratio relation with the amendment consumption.
From Fig. 3-10, if amendment is controlled at 450mg/L with reason, the output of pre-treatment mud is about 400mg/L.
Because the water quality conditioning can be handled CODcr to 1109mg/L from average 1610mg/L, the biochemical system sludge yield will significantly reduce thereupon.But suppose the sewage biochemical treatment of conditioning back to 180mg/L, by the operation conditions of existing first phase biochemical system, conditioning back biochemical sludge output will reduce 0.102kg/m
3(existing system sewage is without conditioning, and biochemical CODcr can reach 300mg/L, and biochemical sludge output is 0.350kg/m
3, amounting to into the CODcr of unit, to subdue sludge output be 0.269kg/kgCODcr.) biochemical water quality can reach better degree, makes physicochemical techniques to save substantially, so will not produce materialized mud or only produce a small amount of mud.
2.6 influence to follow-up biochemical treatment
On the basis of water quality conditioning, carried out whole process lab scale and pilot scale in succession, the actual influence that brings to biochemical system with the reflection conditioning, wherein leading indicator CODcr, go out water colour and see that Fig. 3-11, Fig. 3-12 is described:
From Fig. 3-11, Fig. 3-12 as can be known, under water quality conditioning technology, bio-chemical effluent CODcr can reach the target call that is lower than 150mg/L substantially.And not carrying out water quality when conditioning, bio-chemical effluent then rises immediately.Do not carry out the water quality conditioning during August 5 to August 15, under the situation that guarantees abundant oxygen supply, water outlet CODcr remains and rises to very soon more than the 180mg/L, has exceeded standard; The variation of bio-chemical effluent colourity is also comparatively obvious, but changes identical with CODcr substantially.During conditioning, bio-chemical effluent colourity generally can reach emission standard below 60 times, then rises to higher level when not nursing one's health, and still needs further to handle.
3, the energy-saving and cost-reducing prediction in water quality conditioning back
After the water quality conditioning, suppose before effluent quality and the conditioning identically, will bring the variation of material and energy input, and the variation of exporting such as sludge yield.For ease of relatively, need estimate changing caused material increase and decrease and energy consumption increase and decrease, and form unified quantizating index, be standard with unit consumption and average cost per unit below, the energy consumption before and after the water quality conditioning is analyzed and contrasted.
(1) sludge yield and respective handling cost change
Printing-dyeing waste water treatment process is the combination that biochemical treatment and materialization are handled, and the product mud of system mainly comprises two kinds of biochemical excess sludge and materialized muds.And if sewage is nursed one's health, bio-chemical effluent can reach emission request, can save materialization for the second time and handle, this moment system to produce mud be two kinds of pre-treatment mud and biochemical excess sludges, the sludge yield before and after the water quality conditioning changes as shown in Figure 6:
As can be seen from Figure 6, sludge output total after nursing one's health will reduce to some extent, generally can be at 0.050g/m
3About, the decline of sludge quantity is mainly reflected in the minimizing of aerobic biochemical mud, and the chemical sludge amount is constant substantially on weight.But the chemical sludge of first phase contains aluminium salt before the conditioning, and it is main becoming molysite after the conditioning, though constant on the weight, volume reduces to some extent.Mud cost by existing system is 0.1717 yuan/m
3Sewage, mud 0.7kg/m
3Calculate, the mud processing cost of conditioning back sewage will be reduced to 0.1476 yuan/m
3' cost can save 0.0113 yuan/m
3
(2) pretreatment technology section unit consumption and cost change
When adopting the process means of water quality conditioning, the use cost and the relevant consumer running cost of pretreating agent will be increased, consider that pre-treatment electric cost proportion is less, the variation of pre-treatment cost mainly concentrates in the increase of amendment usage charges, amendment purchase the warehouse-in cost be 300 yuan/T, use 0.5kg can reach the pre-treatment purpose in the sewage per ton, cost then is 0.15 yuan/m
3Electric cost is 0.0299 yuan/m
3
(3) biochemical process section unit consumption and cost change
Original technology (not adopting the water quality conditioning) running cost mainly comprises air feed cost and other electric cost two portions, wherein the former is a main part, its fluctuation and variation are influenced by change of water quality, the latter then is a fixed cost, its proportion less and when the water yield is constant cost can not change yet, under water quality conditioning technology, the variation of biochemical air feed cost can estimate that the reduction degree is the minimizing of biochemical cost expenditure by Inlet and outlet water CODcr.At this moment, biochemical CODcr amount of subduing and cost situation are illustrated in fig. 7 shown below before and after the conditioning:
From Fig. 7, according to the proportionlity of CODcr and air feed cost, under the condition that the water yield remains unchanged, the biochemical cost in conditioning back will reduce by 0.0295 yuan/m
3Simultaneously, consider that the improvement of condition of water quality may make the biochemical treatment ability of system increase, and then impel the utilization ratio of oxygen to improve, thereby will further reduce at the overhead cost and the oxygen supply cost of other biochemical electricity consumptions.
(4) materialization section unit consumption and cost change
After adopting the water quality conditioning, bio-chemical effluent can reach emission request, so the materialization processing just can be saved.Promptly the running cost of existing materialization system can be saved fully, wherein 0.2537 yuan/m of reagent cost
3, 0.0163 yuan/m of electric cost
3
The variation of (5) sewage disposal total cost
Before and after the water quality conditioning, the cost of printing-dyeing waste water treatment process each several part changes and total cost changes as shown in Figure 8:
From Fig. 8, significantly descending appears in conditioning back cost for wastewater treatment, mainly contain following some: the pre-treatment cost obviously increases; Biochemical cost obviously reduces; Materialization is handled and is saved substantially, does not produce corresponding cost; 4, sludge quantity slightly descends, and the mud processing cost descends; The overall cost 0.22 yuan/m that can descend
3Press sewage quantity 600,000 m
3/ d calculates, and annual expense of saving will reach 4,800 ten thousand yuan.
In sum:
(1) the textile printing and dyeing wastewater complicated component of sewage work is changeable, and each material biodegradability differs, and the bio-chemical effluent CODcr that the inertia dissolved organic matter causes in the sewage surpasses 120mg/L; Also can produce the solvability hardly degraded organic substance in the treating processes; Sewage Plant is assembled a large amount of hardly degraded organic substances of each printing and dyeing enterprise, dyestuff that comprise higher alkane, ester class, has with molecular state or ionic state or the like.Above feature causes technology to move difficulty, processing cost is high.Therefore, must nurse one's health,, create good biological treatment condition, reach the energy saving of system consumption reduction and subtract dirty purpose to subdue inertia organic pollutant and the toxic ingredient in the sewage to sewage.
(2) the water quality amendment has been cut down in the water inertia organic pollutant and has been reduced water quality basicity, has improved the B/C ratio, has improved the running environment of biological treatment system.In follow-up anaerobism, aerobic process Duan Zhongyu microorganism synergy, continue performance dealkalize, detoxifcation, throwing out, remove the microorganism residue, help to improve biological treatment efficient, make it directly to reach emission request, and be expected to improve processing power.
(3) after the water quality conditioning, energy conservation and consumption reduction effects is remarkable.On the surface, sewage quality conditioning will increase treatment process one, but from the angle of industrial analysis, and the theory of this just reinforcement " watershed management " can realize the target of treatment process energy consumption and material consumption on the whole.After taking the sewage conditioning, unit running cost can be by 0.8564 yuan/m
3Drop to 0.6377 yuan/m
3, scale effect is inestimable especially.
Claims (6)
1. integrated printing and dyeing waste water treatment process,---biochemical treatment---sludge treatment that comprises pre-treatment, it is characterized in that: in pretreatment technology, add efficient water quality amendment sewage quality is nursed one's health, the consumption of efficient water quality amendment is 100mg/L～900mg/L.
2. a kind of integrated printing and dyeing waste water treatment process according to claim 1 is characterized in that: the consumption of described efficient water quality amendment is 250mg/L～750mg/L.
3. a kind of integrated printing and dyeing waste water treatment process according to claim 2 is characterized in that: the consumption of described efficient water quality amendment is 400mg/L～500mg/L.
4. a kind of integrated printing and dyeing waste water treatment process according to claim 1 is characterized in that: described efficient water quality amendment adopts following prepared:
A, acidleach: in reaction utensil, press 15～30molH
+/ kg ratio adds sludge residue, leaches acid and water, the stirring and refluxing reaction, and temperature of reaction is 80～150 ℃, and the reaction times is 1～5 hour, and liquid-solid ratio is controlled to be 2～5ml/g;
B, filter residue: after the reaction soln after the acidleach filtered, filtrate was water treatment agent finished product just prepare the dilution proportion of 10mL water treatment agent by the 1g sludge residue after;
C, conditioning: just add an amount of solid solubility ferrous salt in the finished product at the above-mentioned medicament that makes, mix, get final product efficient water quality amendment.
5. a kind of integrated printing and dyeing waste water treatment process according to claim 1, it is characterized in that: in described biochemical processing process, take annular pulling flow type acidification hydrolization pond, annular pulling flow type acidification hydrolization pond takes anaerobic zone and settling region to be arranged to one, and be set to two-layer up and down, the upper strata is the settling region, and lower floor is an anaerobic zone.
6. a kind of integrated printing and dyeing waste water treatment process according to claim 1, it is characterized in that: in the described sludge treatment technique, mud in the settling tank enters into concentration basin through the mud pump house, carries out processed through between sludge dewatering, is used for preparing efficient water quality amendment behind the anhydration and incineration.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659283A (en) * | 2012-04-28 | 2012-09-12 | 浙江博世华环保科技有限公司 | Process for treating and recovering dye industrial wastewater |
| CN103011524A (en) * | 2012-12-28 | 2013-04-03 | 湖北君集水处理有限公司 | Recycling and processing method for printing and dyeing wastewater |
| CN103043857A (en) * | 2012-12-19 | 2013-04-17 | 绍兴县江滨水处理有限公司 | Method and device for treating printing and dyeing wastewater by using macroporous adsorption resin |
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| CN105242696A (en) * | 2015-10-23 | 2016-01-13 | 蓝星石油有限公司济南分公司 | Sewage treatment monitoring pond effluent control system |
| CN107597067A (en) * | 2017-10-10 | 2018-01-19 | 孙祎 | A kind of preparation method for the treatment of of dyeing/printing wastewaters |
| CN107879442A (en) * | 2017-12-14 | 2018-04-06 | 佛山高富中石油燃料沥青有限责任公司 | A kind of pitch sewage sulfur elimination |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1019792B (en) * | 1988-11-29 | 1992-12-30 | 湖南省娄底地区轻纺研究所 | A kind of dyeing and printing sewage purifying method |
| SG125919A1 (en) * | 2002-06-24 | 2006-10-30 | Kuraray Co | Apparatus and method for treating wastewater containing nitrogen-containing dyes |
| CN1296296C (en) * | 2004-08-03 | 2007-01-24 | 李双民 | Textile printing and dyeing waste water processing system and method |
| CN100457654C (en) * | 2005-12-01 | 2009-02-04 | 曹健 | Printing-dyeing waste water treatment process |
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2007
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| CN102659283A (en) * | 2012-04-28 | 2012-09-12 | 浙江博世华环保科技有限公司 | Process for treating and recovering dye industrial wastewater |
| CN102659283B (en) * | 2012-04-28 | 2013-06-19 | 浙江博世华环保科技有限公司 | Process for treating and recovering dye industrial wastewater |
| CN103043857A (en) * | 2012-12-19 | 2013-04-17 | 绍兴县江滨水处理有限公司 | Method and device for treating printing and dyeing wastewater by using macroporous adsorption resin |
| CN103011524A (en) * | 2012-12-28 | 2013-04-03 | 湖北君集水处理有限公司 | Recycling and processing method for printing and dyeing wastewater |
| CN103359877A (en) * | 2013-07-12 | 2013-10-23 | 沈阳航空航天大学 | High-concentration sewage multi-stage diatom ecological treatment system |
| CN103508632A (en) * | 2013-09-24 | 2014-01-15 | 吴江唯奇布业有限公司 | Textile sewage treatment system |
| CN105242696A (en) * | 2015-10-23 | 2016-01-13 | 蓝星石油有限公司济南分公司 | Sewage treatment monitoring pond effluent control system |
| CN107597067A (en) * | 2017-10-10 | 2018-01-19 | 孙祎 | A kind of preparation method for the treatment of of dyeing/printing wastewaters |
| CN107879442A (en) * | 2017-12-14 | 2018-04-06 | 佛山高富中石油燃料沥青有限责任公司 | A kind of pitch sewage sulfur elimination |
| CN113526780A (en) * | 2020-04-17 | 2021-10-22 | 王芳 | Wastewater treatment system |
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