CN105217883A - Based on the garbage burning factory percolate treating process of special membrane - Google Patents
Based on the garbage burning factory percolate treating process of special membrane Download PDFInfo
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Abstract
The invention discloses a kind of garbage burning factory percolate treating process based on special membrane, by collecting tank, percolate is concentrated, first carry out coagulating sedimentation pre-treatment, preliminary treatment is carried out again by anaerobion, then biochemical treatment is carried out, remove most organic pollutant and COD, for SuperNF/RO system provides influent quality guarantee, eventually pass SuperNF/RO system, standard water discharge is discharged, concentrated solution then carries out evaporation and is separated, avoid the problem that dense water returns spray burning, proterctive equipment, process is relatively simple, cost easily controls, and membranous system is not easily blocked up by dirt, resistance to crocking is stronger, system stability is good, effectively evade the impact of Biochemical Treatment to a certain extent, substantially increase the work-ing life of membranous system, the biogas that anaerobic treatment produces simultaneously provides Power supply through methane boiler for follow-up dense water evaporates separation, avoid the wasting of resources, utilization of waste material, environmental protection and energy saving.
Description
Technical field
The present invention relates to dirty useless processing technology field, specifically, what relate to is a kind of garbage burning factory percolate treating process based on special membrane.
Background technology
The typical feature of domestic rubbish is that kitchen residue content is high, and water ratio is high, and organic content is high, mixed collection, and relative calorific value is lower.Therefore, at home in municipal solid waste incinerator design, the storage volume of refuse chute is the garbage treatment quantity of 3-7 days; Namely rubbish stores the fermentation slaking through 3-7 days in refuse chute, is gone out by the moisture content drop in rubbish, so create percolate to reach.This leachate quality is not up to standard, directly to environmental emission by contaminate environment, therefore must process it.
Detect by analysis, the leachate quality feature of garbage burning factory is: organic contamination substrate concentration is high, complicated component; The change of water quality situation greatly; Containing a complexing metal ion; Ammonia-nitrogen content is high; Biodegradability poor (with the landfill time, biodegradability is more and more lower); Nutritive element C/N/P is out of proportion; Specific conductivity is high, salt content is high.In general its complicated, polymer pollutent containing a large amount of bio-refractory, its water quality data is as shown in table 1, the process effluent quality of draining generally will reach the requirement of " household refuse landfill sites pollutant catabolic gene standard " GB16889-2008, as shown in table 2, entirety intractability is large.
| COD Cr(mg/L) | B/C value | Ammonia nitrogen (mg/L) | pH | SS(mg/L) | Salinity |
| 40000~80000 | 0.4~0.8 | 200~3000 | 5.0~6.5 | 1000~5000 | 0.5~2% |
Table 1
| COD Cr(mg/L) | Ammonia nitrogen (mg/L) | Total ammonia (mg/L) | SS(mg/L) | Colourity (extension rate) |
| ≤100 | ≤25 | ≤40 | ≤30 | ≤ 40 times |
Table 2
Existing garbage burning factory percolate treating process is as follows, percolate is concentrated in collecting tank, after coagulating sedimentation, mud enters concentration basin, liquid portion carries out anaerobic treatment, the mud now produced again also enters concentration basin, the firedamp drainage produced, liquid portion enters the biochemical film system process of aerobic/anaerobic (A/O) technique binding film bio-reactor (MBR) again, produce mud and enter concentration basin again, water outlet is by rolling NF/RO process, it produces water then qualified discharge, and dense water returns and is sprayed onto incinerator; To the sludge condensation collected in sludge thickener, filtrate returns collecting tank, and the mud after concentrated forms mud cake landfill after sludge filter press process, and the filtrate that press filtration produces also returns collecting tank.
Along with the application of membrane technique in sewage disposal, rolling NF (nanofiltration membrane)/RO (reverse osmosis membrane) is progressively applied in the process of percolate, and is combined with embrane method by biochemical process and form A/O-MBR system.Because pollutants from landfill leachate concentration is too high, cause biochemical system poor stability, and biochemical system is easily subject to extraneous factor impact, particularly anaerobic system is to very temperature sensitive.At particularly northern area in winter, at low ambient temperatures, the biological activity of microorganism reduces, and cause biochemical system processing efficiency low, bio-chemical effluent COD, often beyond 1000mg/L, even reaches 2000mg/L.And rolling NF/RO requires high to influent quality, resistance to crocking is poor, general requirement influent COD is less than 100mg/L, also require to be less than 200mg/l even if special resistance to crocking rolling NF/RO is intake, and above-mentioned bio-chemical effluent COD index is well beyond the tolerance degree of rolling NF/RO, although the initial stage uses energy qualified discharge, but because film is very easily dirty stifled, flux depression, treatment effect is caused to be affected, work-ing life is short, and the number of times of Membrane cleaning and replacing is frequent, thus causes working cost greatly to increase.And the rolling NF/RO rate of recovery is lower, the general rolling RO rate of recovery is less than 60%, and rolling NF is less than 70%, and along with the increase of working time, film is contaminated, and the rate of recovery can constantly reduce, thus cannot meet processing requirements.Moreover its dense hydromining is used back and is sprayed onto the efficiency that incinerator burning not only can affect burning, and the dense water of high saliferous is very strong to burning stone or metal plate for standing a stove on as a precaution against fire corrodibility, can reduce the work-ing life of stone or metal plate for standing a stove on as a precaution against fire.
Summary of the invention
For overcoming the problems referred to above that prior art exists, the invention provides a kind of efficiently, not easily dirty stifled, long service life, the easy to use and garbage burning factory percolate treating process based on special membrane that cost is low.
To achieve these goals, the technical solution used in the present invention is as follows:
Based on a garbage burning factory percolate treating process for special membrane, comprise the steps:
(1) percolate is introduced in collecting tank;
(2) add the agent of solidifying wadding and carry out coagulating sedimentation pre-treatment to liquid, remove the suspended particulate in percolate, the mud that precipitation produces enters sludge thickener;
(3) pretreated water outlet enters one-level biochemistry pool and carries out anaerobic treatment by anaerobion, and remove majority of organic pollutants, the mud of generation enters sludge thickener, and the biogas that anaerobion produces enters methane boiler;
(4) water outlet of anaerobic treatment enters A/O-MBR biochemical treatment system, and remove most COD and ammonia nitrogen pollutant by the aerobic respiration effect of aerobic microbiological and nitrification, the mud of generation enters sludge thickener;
(5) water outlet of A/O-MBR biochemical treatment system enters SuperNF/RO system, removes COD, ammonia nitrogen and salinity further, makes its water outlet reach emission standard;
(6) the dense water of SuperNF/RO system enters multi-effect evaporation system and carries out evaporative crystallization, and its evaporation energy is provided by methane boiler, the water of condensation qualified discharge of output, residual residue landfill disposal;
(7) coagulating sedimentation produces by sludge thickener mud, the mud of anaerobic treatment generation and the mud of A/O-MBR biochemical treatment system generation concentrate further, and supernatant liquor is back to collecting tank, and the mud after concentrated is sent into sludge filter press and processed;
(8) described sludge filter press carries out processed, filtrate backflow input collecting tank, the mud cake landfill disposal of generation to the mud after concentrated.
Particularly, in described step (2), the solidifying wadding agent of interpolation is at least the one in PB1 gene, polyacrylamide PAM.
Particularly, in described step (3), the temperature of anaerobic treatment is 30 ~ 35 DEG C, is at least 50% to the clearance of COD.
Particularly, in described step (4), the clearance of A/O-MBR biochemical treatment system to COD is at least 70%, is at least 90% to the clearance of ammonia nitrogen.
Particularly, in described step (5), the clearance of SuperNF/RO system to COD is at least 95%, is at least 90% to the clearance of ammonia nitrogen.
Particularly, in described step (4), also for A/O-MBR biochemical treatment system adds methyl alcohol and blast air as reaction auxiliary material.
Particularly, in described step (8), sludge filter press is chamber-type press filter.
Compared with prior art, the present invention has following beneficial effect:
Percolate is concentrated by collecting tank by the present invention, first carry out the pre-treatment of coagulating sedimentation, preliminary treatment is carried out again by anaerobion, then processed further by biochemical treatment system, remove most organic pollutant and COD, for SuperNF/RO system provides influent quality guarantee, the advanced treatment eventually passing SuperNF/RO system makes standard water discharge, process is relatively simple, cost easily controls, and membranous system is not easily blocked up by dirt, system stability is better, also not by the impact of Biochemical Treatment, substantially increase the work-ing life of membranous system, the biogas that simultaneously anaerobic treatment produces is admitted to methane boiler generate energy for follow-up dense water crystallization provides convenience, utilization of waste material, environmental protection and energy saving, avoid the problem that dense water returns spray burning, proterctive equipment, and the present invention is novel, design ingenious, be simple and easy to use, be with a wide range of applications, be applicable to applying.
Accompanying drawing explanation
Fig. 1 is schema of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
As shown in Figure 1, based on the garbage burning factory percolate treating process of special membrane, should comprise the steps:
(1) percolate is introduced in collecting tank;
(2) add the agent of solidifying wadding and carry out coagulating sedimentation pre-treatment to liquid, remove the suspended particulate in percolate, the mud that precipitation produces enters sludge thickener; Wherein, the solidifying wadding agent of interpolation is at least the one in PB1 gene, polyacrylamide PAM;
(3) pretreated water outlet enters one-level biochemistry pool and carries out anaerobic treatment by anaerobion, and remove majority of organic pollutants, the mud of generation enters sludge thickener, and the biogas that anaerobion produces enters methane boiler; Wherein, it is 30 ~ 35 DEG C that temperature controls, and can realize the effect of COD clearance 50%;
(4) water outlet of anaerobic treatment enters A/O-MBR biochemical treatment system, and remove most COD and ammonia nitrogen pollutant by the aerobic respiration effect of aerobic microbiological and nitrification, the mud of generation enters sludge thickener; By native system, 70% is at least to the clearance of COD, 90% is at least to the clearance of ammonia nitrogen;
(5) water outlet of A/O-MBR biochemical treatment system enters SuperNF/RO system, after Super film device filters, remove COD, ammonia nitrogen and salt further to grade pollutent, wherein add methyl alcohol and blast air as reaction auxiliary material, 95% is at least to the clearance of COD, 90% is at least to the clearance of ammonia nitrogen, makes its water outlet reach below emission standard;
(6) the dense water of SuperNF/RO system enters multi-effect evaporation system and carries out evaporative crystallization, and its evaporation energy is provided by methane boiler, the water of condensation qualified discharge of output, residual residue landfill disposal;
(7) coagulating sedimentation produces by sludge thickener mud, the mud of anaerobic treatment generation and the mud of A/O-MBR biochemical treatment system generation concentrate further, and supernatant liquor is back to collecting tank, and the mud after concentrated is sent into sludge filter press and processed;
(8) described sludge filter press carries out processed to the mud after concentrated, and filtrate backflow input collecting tank, the mud cake landfill disposal of generation, described sludge filter press is chamber-type press filter.
The equipment used in the present invention and system are prior art, repeat no more.
Carry out water treatment experiment of the present invention at certain garbage burning factory, the related data of acquisition is as shown in table 3 below:
Table 3
Known by testing, the present invention has excellent effect on water treatment efficiency.
Above-described embodiment is only the preferred embodiments of the present invention, not limiting the scope of the invention, as long as adopt principle of design of the present invention, and the change carried out non-creativeness work on this basis and make, all should belong within protection scope of the present invention.
Claims (7)
1., based on a garbage burning factory percolate treating process for special membrane, it is characterized in that, comprise the steps:
(1) percolate is introduced in collecting tank;
(2) add the agent of solidifying wadding and carry out coagulating sedimentation pre-treatment to liquid, remove the suspended particulate in percolate, the mud that precipitation produces enters sludge thickener;
(3) pretreated water outlet enters one-level biochemistry pool and carries out anaerobic treatment by anaerobion, and remove majority of organic pollutants, the mud of generation enters sludge thickener, and the biogas that anaerobion produces enters methane boiler;
(4) water outlet of anaerobic treatment enters A/O-MBR biochemical treatment system, and remove most COD and ammonia nitrogen pollutant by the aerobic respiration effect of aerobic microbiological and nitrification, the mud of generation enters sludge thickener;
(5) water outlet of A/O-MBR biochemical treatment system enters SuperNF/RO system, removes COD, ammonia nitrogen and salinity further, makes its water outlet reach emission standard;
(6) the dense water of SuperNF/RO system enters multi-effect evaporation system and carries out evaporative crystallization, and its evaporation energy is provided by methane boiler, the water of condensation qualified discharge of output, residual residue landfill disposal;
(7) coagulating sedimentation produces by sludge thickener mud, the mud of anaerobic treatment generation and the mud of A/O-MBR biochemical treatment system generation concentrate further, and supernatant liquor is back to collecting tank, and the mud after concentrated is sent into sludge filter press and processed;
(8) described sludge filter press carries out processed, filtrate backflow input collecting tank, the mud cake landfill disposal of generation to the mud after concentrated.
2. the garbage burning factory percolate treating process based on special membrane according to claim 1, is characterized in that, in described step (2), the solidifying wadding agent of interpolation is at least the one in PB1 gene, polyacrylamide PAM.
3. the garbage burning factory percolate treating process based on special membrane according to claim 1, is characterized in that, in described step (3), the temperature of anaerobic treatment is 30 ~ 35 DEG C, is at least 50% to the clearance of COD.
4. the garbage burning factory percolate treating process based on special membrane according to claim 3, is characterized in that, in described step (4), the clearance of A/O-MBR biochemical treatment system to COD is at least 70%, is at least 90% to the clearance of ammonia nitrogen.
5. the garbage burning factory percolate treating process based on special membrane according to claim 4, is characterized in that, in described step (5), the clearance of SuperNF/RO system to COD is at least 95%, is at least 90% to the clearance of ammonia nitrogen.
6. the garbage burning factory percolate treating process based on special membrane according to claim 1, is characterized in that, in described step (4), also for A/O-MBR biochemical treatment system adds methyl alcohol and blast air as reaction auxiliary material.
7. the garbage burning factory percolate treating process based on special membrane according to claim 1, is characterized in that, in described step (8), sludge filter press is chamber-type press filter.
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| CN105859020A (en) * | 2016-03-31 | 2016-08-17 | 豫莱（上海）环保科技发展有限公司 | Method for processing methyl ester type synthetic wastewater and solid wastes thereof |
| CN106145532A (en) * | 2016-08-03 | 2016-11-23 | 广州市迈源科技有限责任公司 | A kind of percolate is biochemical, evaporate joint processing system and technique |
| CN107244776A (en) * | 2017-05-25 | 2017-10-13 | 成都美富特膜科技有限公司 | A kind of handling process of percolate |
| CN107399876A (en) * | 2017-07-27 | 2017-11-28 | 江苏维尔利环保科技股份有限公司 | A kind of processing method of high ammonia-nitrogen wastewater |
| CN107572729A (en) * | 2017-10-21 | 2018-01-12 | 浙江千尧环境工程有限公司 | A kind of Waste Water Treatment of rubbish from cooking penetrating fluid |
| CN109052816A (en) * | 2018-08-08 | 2018-12-21 | 苏州荣轩环保有限公司 | A kind of cosmetics waste water treatment process |
| CN110204045A (en) * | 2018-12-31 | 2019-09-06 | 上海康恒环境股份有限公司 | A kind of method of municipal solid waste incinerator percolate treating process drop total nitrogen |
| CN110697977A (en) * | 2019-10-09 | 2020-01-17 | 湖南润万环保科技有限公司 | Treatment process of landfill closure leachate |
| CN110723865A (en) * | 2019-09-03 | 2020-01-24 | 湖北沃特尔股份有限公司 | Combined treatment process for landfill leachate combined system |
| CN111003888A (en) * | 2019-12-24 | 2020-04-14 | 浙江筑原生态科技有限公司 | Treatment method of chemical wastewater of dead pigs |
| CN111018272A (en) * | 2020-01-16 | 2020-04-17 | 河南君和环保科技有限公司 | Integrated treatment system and treatment process for erythromycin thiocyanate production wastewater |
| CN111484179A (en) * | 2020-03-25 | 2020-08-04 | 清华大学 | Waste heat drive-based zero-discharge method and system for leachate of garbage power plant |
| CN111735056A (en) * | 2020-05-27 | 2020-10-02 | 东南大学 | Heavy metal collecting agent for garbage incinerator, garbage incineration treatment system and treatment method |
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| CN114772874A (en) * | 2022-06-20 | 2022-07-22 | 中国恩菲工程技术有限公司 | Self-supplying heat treatment method and system for landfill leachate |
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| CN105859020A (en) * | 2016-03-31 | 2016-08-17 | 豫莱（上海）环保科技发展有限公司 | Method for processing methyl ester type synthetic wastewater and solid wastes thereof |
| CN105859020B (en) * | 2016-03-31 | 2018-06-22 | 豫莱（上海）环保科技发展有限公司 | A kind of methyl esters class comprehensive wastewater and its solid waste treatment method |
| CN106145532A (en) * | 2016-08-03 | 2016-11-23 | 广州市迈源科技有限责任公司 | A kind of percolate is biochemical, evaporate joint processing system and technique |
| CN107244776A (en) * | 2017-05-25 | 2017-10-13 | 成都美富特膜科技有限公司 | A kind of handling process of percolate |
| CN107399876B (en) * | 2017-07-27 | 2019-09-27 | 维尔利环保科技集团股份有限公司 | A kind of processing method of high ammonia-nitrogen wastewater |
| CN107399876A (en) * | 2017-07-27 | 2017-11-28 | 江苏维尔利环保科技股份有限公司 | A kind of processing method of high ammonia-nitrogen wastewater |
| CN107572729A (en) * | 2017-10-21 | 2018-01-12 | 浙江千尧环境工程有限公司 | A kind of Waste Water Treatment of rubbish from cooking penetrating fluid |
| CN109052816A (en) * | 2018-08-08 | 2018-12-21 | 苏州荣轩环保有限公司 | A kind of cosmetics waste water treatment process |
| CN110204045A (en) * | 2018-12-31 | 2019-09-06 | 上海康恒环境股份有限公司 | A kind of method of municipal solid waste incinerator percolate treating process drop total nitrogen |
| CN110723865A (en) * | 2019-09-03 | 2020-01-24 | 湖北沃特尔股份有限公司 | Combined treatment process for landfill leachate combined system |
| CN110697977A (en) * | 2019-10-09 | 2020-01-17 | 湖南润万环保科技有限公司 | Treatment process of landfill closure leachate |
| CN111003888A (en) * | 2019-12-24 | 2020-04-14 | 浙江筑原生态科技有限公司 | Treatment method of chemical wastewater of dead pigs |
| CN111018272A (en) * | 2020-01-16 | 2020-04-17 | 河南君和环保科技有限公司 | Integrated treatment system and treatment process for erythromycin thiocyanate production wastewater |
| CN111484179A (en) * | 2020-03-25 | 2020-08-04 | 清华大学 | Waste heat drive-based zero-discharge method and system for leachate of garbage power plant |
| CN111875151A (en) * | 2020-05-25 | 2020-11-03 | 东南大学 | System and method for co-processing garbage leachate and incineration fly ash |
| CN111735056A (en) * | 2020-05-27 | 2020-10-02 | 东南大学 | Heavy metal collecting agent for garbage incinerator, garbage incineration treatment system and treatment method |
| CN112723668A (en) * | 2020-12-18 | 2021-04-30 | 常熟浦发第二热电能源有限公司 | Leachate concentration treatment method based on flue gas waste heat |
| CN114772874A (en) * | 2022-06-20 | 2022-07-22 | 中国恩菲工程技术有限公司 | Self-supplying heat treatment method and system for landfill leachate |
| CN115893714A (en) * | 2022-11-04 | 2023-04-04 | 甘肃金创绿丰环境技术有限公司 | High-concentration degradation-resistant wastewater treatment process |
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