CN101054216A - Treatment method for city domestic waste percolate after being filtered by biochemistry film and concentrated - Google Patents
Treatment method for city domestic waste percolate after being filtered by biochemistry film and concentrated Download PDFInfo
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- CN101054216A CN101054216A CN 200710020911 CN200710020911A CN101054216A CN 101054216 A CN101054216 A CN 101054216A CN 200710020911 CN200710020911 CN 200710020911 CN 200710020911 A CN200710020911 A CN 200710020911A CN 101054216 A CN101054216 A CN 101054216A
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Abstract
The invention discloses a method for processing of percolating liquid biochemical membrane for urban daily rubbish after filtering and concentration. The waste water is the concentration liquid trapped by the filtering membrane or reverse osmosis membrane in the rubbish percolating liquid processing. The processing steps contain: passing the pretreated concentrated percolating liquid through the apparatus filled with composite functional absorption resin in the 0.5-5BV/h flux at room temperature, which is followed by neutralization with alkali after water absorbed out and is then discharged, regenerating the above resin with NaOH solution with the desorption agent of 0.5-3.0BV/h. The volume of the concentrated desorption solution is around 1/100 of that of the original percolating liquid and the concentrated desorption solution is burnt, buried or comprehensively used while the diluted desorption solution can be circulated for preparing the next batch of desorption agent. The invention is capable of reducing the concentration of CODCr in the concentrated percolating liquid from 6000mg/L or so to 300mg/L or so and finally realizes amount-reduced and innocuous concentrated percolating liquid. The method is characterized in simple processing, big processing amount, and capable of compensating the shortcomings of the current processing techniques of the urban daily rubbish percolating liquid.
Description
Technical field
The present invention relates to the treatment process after a kind of city domestic refuse percolation liquid filtered by biochemistry film concentrates, particularly, be meant the method that adopts amido modified complex function adsorption resin adsorption treatment city domestic refuse percolation liquid concentrated solution.
Background technology
The main treatment process of domestic waste is sanitary landfill at present, and the percolate that produces in the sanitary landfill process is an internationally recognized processing difficult problem, and more advanced treatment process is this class combination process of biochemistry-membrane filtration at present.The general flow of this technology is as follows: percolate is after biochemical treatment, pass through nanofiltration or reverse-osmosis treated again, film is handled the back except water outlet up to standard, also have a large amount of film trapped fluids to produce, city domestic refuse percolation liquid is handled concentrated solution (hereinafter to be referred as the percolate concentrated solution) and just is being meant the concentrated solution that this class film is held back.This waste water color and luster is dark brown, COD
CrBe that pH is about 7 about 5000～8000mg/L, main component be similar humic matter and with organic and inorganic compounding pollutent, and contain a small amount of heavy metal ion, very big to environmental hazard.
Percolate biochemistry-film-filter concentration liquid volume is former percolate 1/6～1/8, output is very big, its treatment process mainly contains coagulant sedimentation, evaporation mummification method and absorption burning method etc., and wherein coagulant sedimentation exists easily generation secondary pollution, the very poor shortcoming of treatment effect; Evaporate the mummification method to the equipment requirements height, working cost height, operational administrative complexity; The absorption burning method uses more abroad, but very high to the requirement of sorbent material, generally selects gac for use.The gac bad mechanical strength, the regeneration difficulty has limited the application of absorption burning method.Therefore, can the percolate concentrated solution be properly handled, and can key be search out or develop other suitable sorbent materials except that gac, and at present, other sorbent materials yet there are no the correlative study report to the processing of percolate concentrated solution.
Summary of the invention
1. invent the technical problem that will solve
Improvement method after the purpose of this invention is to provide a kind of city domestic refuse percolation liquid filtered by biochemistry film and concentrating utilizes the inventive method can effectively reduce COD in the percolate concentrated solution
Cr, the minimizing of pollutent, innoxious in the realization waste water.
2. technical scheme of the present invention is as follows:
Treatment process after a kind of city domestic refuse percolation liquid filtered by biochemistry film concentrates, it may further comprise the steps:
(1) with the percolate concentrated solution through after the pre-treatment, under the flow condition of 0～40 ℃ temperature and 0.5～5BV/h, by being filled with the device of amido modified complex function adsorption resin, absorption effluent add in the alkali and after can discharge;
(2) be that 6%～8% aqueous sodium hydroxide solution carries out desorption and regeneration as desorbing agent with having adsorbed organic amido modified complex function adsorption resin weight percent in the step (1), the desorbing agent flow is 0.5～3.0BV/h.
Pre-treatment is meant the percolate concentrated solution is filtered that purpose is to remove some to adsorbing the impurity of deleterious suspension in the step (1), and adsorption temp is controlled at 0～40 ℃, and after handling through step (1), absorption effluent is a water white transparency, COD
CrCan reduce to about 300mg/L, pH is 3～5, adds in the alkali and back (making that generally the pH value is 6～8) gets final product qualified discharge.
In the step (2) volume of desorption liquid reduced to percolate concentrated solution water inlet volume 1/15～1/30 (for percolate stoste volume about 1/100), amido modified complex function adsorption resin can use behind desorption and regeneration repeatedly.High concentration desorption liquid carries out and can be burned or fully utilize, and light concentration desorption liquid can be used for preparing next batch desorbing agent recycled.
Amido modified complex function adsorption resin described in the step (1) is meant behind resin in the cross-linking process, the chlorine ball is carried out reaction kinetic, introduce the amino a kind of resin that is prepared from resin surface, because the pore structure on surface and the existence of amino group, amido modified complex function adsorption resin has hydrophobic to organic matter in the concentrated solution and static (or hydrogen bond) synergy simultaneously, as home-made NDA-88 resin or NDA-99 resin (Jiangsu Nanda Gede Environmental Protection Technology Co., Ltd's production), this resin absorption efficient height, desorption and regeneration is complete, can be recycled and reused for to handle the percolate concentrated solution.
In the concrete operations step, the absorption of resin can be adopted double-column in series absorption, the operation scheme of single tower desorption, be that every kind of resin is provided with I, II, three adsorption towers of III, with I, II tower series connection following current absorption, the I tower is as first post earlier, the II tower is as stern post, after the absorption of I tower is saturated, switch to II, III tower series connection following current absorption, the II tower is as first post, the III tower is as stern post, the I tower carries out the following current desorption simultaneously, and so cyclical operation can guarantee the operation continuously all the time of whole device.
3. beneficial effect
The invention discloses the treatment process after a kind of resin absorption processing percolate concentrates.Stoste COD
CrBe 5000～6000mg/L, COD after treatment
CrClearance all greater than 90%, absorption effluent can directly be discharged after suitably adding alkali.Resin is through behind the desorption, and desorption rate is all greater than 98%, and high dense desorption liquid can directly burn, and also can fully utilize or reclaim humic acid.The amido modified complex function adsorption resin NDA-88 that adopts, absorption property is stable, and desorption and regeneration is complete, can be recycled and reused for to handle the percolate concentrated solution.This method technology is simple, and treatment capacity is big, and is easy and simple to handle, and economical and efficient can not introduced secondary pollution, and good practicability is arranged, and it can finely remedy the deficiency of existing city domestic refuse percolation liquid treatment technology as a kind of advanced treatment technology.
Embodiment
Further specify the present invention by the following examples.
Embodiment 1
The amido modified complex function adsorption resin NDA-88 of 20ml packed in the glass adsorption column of strap clamp cover, and (Φ 20 * 350mm).Under the room temperature (20～25 ℃), with percolate biochemistry-nanofiltration concentrated solution after filtration membrane filtration remove suspended matter, by resin bed, wastewater treatment capacity is that 400mL/ criticizes with the flow of 40mL/h.Former percolate concentrated solution COD
CrBe 5360mg/L, absorption effluent COD
CrBe 372mg/L, COD
CrClearance be 93.1%.
The 30mL weight percent of using 60 ± 2 ℃ of temperature successively is 8% the NaOH aqueous solution and 50mL water adverse current desorption and regeneration resin bed, desorption flow 20mL/h, COD
CrDesorption rate be 98%.The effusive light concentration desorption liquid in back (about 60mL) is used to prepare the next batch desorbing agent.The resin bath water can directly be discharged.
Embodiment 2
The NDA-88 resin of each 20mL is respectively charged into (Φ 20 * 350mm), are respectively I, II, three adsorption towers of III in the glass adsorption column of three strap clamps covers.The brown waste water of getting 400mL carries out pre-treatment, and feed glass chuck water temperature is 20 ± 1 ℃, with waste water with the flow of 2BV/h by the NDA-88 resin bed, treatment capacity is that 400mL/ criticizes, absorption effluent is light yellow, COD
CrReduce to 320mg/L.Water outlet can reach corresponding sewage drainage standard through neutralization again.The absorption of resin can be adopted double-column in series absorption, the operation scheme of single tower desorption.Earlier with I, II tower series connection following current absorption, the I tower is as first post, the II tower is as stern post, after the absorption of I tower is saturated, switch to II, III tower series connection following current absorption, the II tower is as first post, the III tower is as stern post, the I tower carries out the following current desorption simultaneously, and so cyclical operation can guarantee the operation continuously all the time of whole device.
NDA-88 resin after absorption is 8% the NaOH aqueous solution and 50mL water successively with the 30mL weight percent, and desorption temperature is 60 ± 2 ℃, and the desorbing agent flow is 1BV/h.Wherein high dense desorption liquid COD
CrSurpass 30000mg/L, high dense desorption liquid calorific value height burns respond wellly, and lower concentration elutriant cover is used for following batch desorption manipulation, and resin can recover adsorptive power behind desorption and regeneration.
Embodiment 3
Other operational condition is with embodiment 1, and the solution liquid absorption flow after percolate biochemistry-nanofiltration is concentrated doubles, through after the pre-treatment with the flow of 80mL/h by resin bed, the adsorption treatment effect is as follows: former percolate concentrated solution COD
CrBe 4643mg/L, absorption effluent COD
CrBe 342mg/L, COD
CrClearance be 90.5%.
Embodiment 4
Other operational condition is with embodiment 1, and the adsorption treatment effect is as follows: former percolate concentrates back COD
CrBe 4643mg/L, absorption effluent COD
CrBe 386mg/L, COD
CrClearance be 91.7%.It is 7% the NaOH aqueous solution that desorbing agent is selected the 30mL weight percent concentration for use, COD
CrDesorption rate be 95.5%, the desorbing agent flow is 0.5BV/h.
Embodiment 5
Other operational condition is with embodiment 1, with the adsorption temp raising of percolate concentrated solution.Waste water is through after the pre-treatment, and the flow with 10mL/h under 40 ℃ temperature passes through resin bed, and the adsorption treatment effect is as follows: former percolate concentrated solution COD
CrBe 5120mg/L, absorption effluent COD
CrBe 465mg/L, COD
CrClearance be 91.1%.
Embodiment 6
Other operational condition is with embodiment 1, with the adsorption temp reduction of percolate concentrated solution.Waste water is through after the pre-treatment, and by resin bed, the adsorption treatment effect is as follows: former percolate concentrated solution COD under 5 ℃ temperature
CrBe 5120mg/L, absorption effluent COD
CrBe 415mg/L, COD
CrClearance be 91.9%.
Embodiment 7
The amido modified complex function adsorption resin NDA-99 of 20ml packed in the glass adsorption column of strap clamp cover, and (Φ 20 * 350mm).Under the room temperature (20～25 ℃), percolate biochemistry-reverse osmosis concentration after-filtration removed the impurity of suspension after, by resin bed, wastewater treatment capacity is that 400mL/ criticizes with the flow of 40mL/h.Former percolate concentrated solution COD
CrBe 5120mg/L, absorption effluent COD
CrBe 386mg/L, COD
CrClearance be 92.5%.
Embodiment 8
Other operational condition is with embodiment 7, and with percolate biochemistry-reverse osmosis concentrated liquid, by resin bed, wastewater treatment capacity is that 400mL/ criticizes with the flow of 40mL/h.Former percolate concentrated solution COD
CrBe 5918mg/L, absorption effluent COD
CrBe 486mg/L, COD
CrClearance be 91.8%.It is 7% the NaOH aqueous solution that desorbing agent is selected the 30mL weight percent concentration for use, and the desorbing agent flow is 3BV/h.
Claims (5)
1. the treatment process after a city domestic refuse percolation liquid filtered by biochemistry film concentrates the steps include:
(1) with after city domestic refuse percolation liquid biochemistry-film-filter concentration liquid process pre-treatment, under the flow condition of 0～40 ℃ temperature and 0.5～5BV/h, by being filled with the device of amido modified complex function adsorption resin, absorption effluent add in the alkali and after can discharge;
(2) be 6～8% sodium hydroxide solution desorption and regeneration with having adsorbed organic amido modified complex function adsorption resin weight percent in the step (1), the desorbing agent flow is 0.5～3.0BV/h.
2. a kind of city domestic refuse percolation liquid according to claim 1 is handled the treatment process after concentrating, it is characterized in that the amido modified complex function adsorption resin described in the step (1) is meant behind resin in the cross-linking process, the chlorine ball is carried out reaction kinetic, introduce the amino a kind of resin that is prepared from resin surface.
3. a kind of city domestic refuse percolation liquid according to claim 2 is handled the treatment process after concentrating, and it is characterized in that the amido modified complex function adsorption resin described in the step (1) is NDA-88, NDA-99 resin.
4. handle treatment process after concentrating according to claim 2 or 3 described a kind of city domestic refuse percolation liquids, the absorption that it is characterized in that resin in the step (1) can be adopted double-column in series absorption, the operation scheme of single tower desorption, be that every kind of resin is provided with I, II, three adsorption towers of III, earlier with I, II tower series connection following current absorption, the I tower is as first post, the II tower is as stern post, after the absorption of I tower is saturated, switch to II, III tower series connection following current absorption, the II tower is as first post, and the III tower is as stern post, and the I tower carries out the following current desorption simultaneously.
5. handle treatment process after concentrating according to claim 2 or 3 described a kind of city domestic refuse percolation liquids, it is characterized in that high concentration desorption liquid landfill, burning or comprehensive utilization behind the desorption in the step (2), light concentration desorption liquid can be used for preparing next batch desorbing agent recycled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200710020911 CN101054216A (en) | 2007-04-03 | 2007-04-03 | Treatment method for city domestic waste percolate after being filtered by biochemistry film and concentrated |
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| CN 200710020911 CN101054216A (en) | 2007-04-03 | 2007-04-03 | Treatment method for city domestic waste percolate after being filtered by biochemistry film and concentrated |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863530A (en) * | 2010-07-07 | 2010-10-20 | 南京大学 | Continuous advanced treatment system of heavy metal ion-containing tail water and treatment method |
| CN102050554A (en) * | 2010-11-24 | 2011-05-11 | 南京大学 | Treatment method of high-concentration resin desorption liquid after deep purification of wastewater |
| CN102557171A (en) * | 2012-01-18 | 2012-07-11 | 深圳市百斯特环保工程有限公司 | Method and system for treating nano-filtration concentrated liquor of landfill leachate |
| CN103601313A (en) * | 2013-10-30 | 2014-02-26 | 崇义章源钨业股份有限公司 | Processing method of landfill leachate |
| CN104150686A (en) * | 2014-07-18 | 2014-11-19 | 湖北百清环保技术有限公司 | Landfill leachate treatment method based on microporous aeration ultrafiltration and efficient adsorption |
| CN108275753A (en) * | 2018-01-15 | 2018-07-13 | 辽宁科技大学 | A kind of processing method and its dedicated unit of landfill leachate film-filter concentration liquid |
| CN108928877A (en) * | 2018-07-23 | 2018-12-04 | 北京市环境卫生设计科学研究所 | A method of utilizing slag treatment rubbish concentrate |
-
2007
- 2007-04-03 CN CN 200710020911 patent/CN101054216A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863530A (en) * | 2010-07-07 | 2010-10-20 | 南京大学 | Continuous advanced treatment system of heavy metal ion-containing tail water and treatment method |
| CN101863530B (en) * | 2010-07-07 | 2012-11-28 | 南京大学 | Continuous advanced treatment system of heavy metal ion-containing tail water and treatment method |
| CN102050554A (en) * | 2010-11-24 | 2011-05-11 | 南京大学 | Treatment method of high-concentration resin desorption liquid after deep purification of wastewater |
| CN102050554B (en) * | 2010-11-24 | 2012-09-26 | 南京大学 | Treatment method of high-concentration resin desorption liquid after deep purification of wastewater |
| CN102557171A (en) * | 2012-01-18 | 2012-07-11 | 深圳市百斯特环保工程有限公司 | Method and system for treating nano-filtration concentrated liquor of landfill leachate |
| CN102557171B (en) * | 2012-01-18 | 2013-05-08 | 深圳市百斯特环保工程有限公司 | Method and system for treating nano-filtration concentrated liquor of landfill leachate |
| CN103601313A (en) * | 2013-10-30 | 2014-02-26 | 崇义章源钨业股份有限公司 | Processing method of landfill leachate |
| CN103601313B (en) * | 2013-10-30 | 2015-02-18 | 崇义章源钨业股份有限公司 | Processing method of landfill leachate |
| CN104150686A (en) * | 2014-07-18 | 2014-11-19 | 湖北百清环保技术有限公司 | Landfill leachate treatment method based on microporous aeration ultrafiltration and efficient adsorption |
| CN108275753A (en) * | 2018-01-15 | 2018-07-13 | 辽宁科技大学 | A kind of processing method and its dedicated unit of landfill leachate film-filter concentration liquid |
| CN108275753B (en) * | 2018-01-15 | 2020-07-03 | 辽宁科技大学 | Method for treating landfill leachate membrane filtration concentrated solution and special device thereof |
| CN108928877A (en) * | 2018-07-23 | 2018-12-04 | 北京市环境卫生设计科学研究所 | A method of utilizing slag treatment rubbish concentrate |
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