CN202785843U - High-concentration landfill leachate nanofiltration integrated treatment system - Google Patents
High-concentration landfill leachate nanofiltration integrated treatment system Download PDFInfo
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- CN202785843U CN202785843U CN201220477923.2U CN201220477923U CN202785843U CN 202785843 U CN202785843 U CN 202785843U CN 201220477923 U CN201220477923 U CN 201220477923U CN 202785843 U CN202785843 U CN 202785843U
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Abstract
The utility model discloses a high-concentration landfill leachate nanofiltration integrated treatment system. The system is formed by sequentially connecting a high-concentration leachate storage tank, a leachate pre-treatment tank, a reverse osmosis precipitation device, a nanofiltration membrane filter and a leachate recycle tank, wherein an inner circulation concentrated liquor reflux pipeline and an outer circulation concentrated liquid drainage pipeline are arranged in the reverse osmosis precipitation device. The system aims to solve the technical problem that different contaminants in landfill leachate cannot be subjected to classified treatment, so that the advanced treatment of the landfill leachate and classified treatment for removing the contaminants of organic matters, ammonia nitrogen and the like in the landfill leachate are realized, thus, the treated outlet water can strictly meet the requirements of water pollution discharge concentration limits of municipal solid waste landfill pollution control standards, the system operates stably for a long time, and the treatment cost is lower than that of a two-level disc tube reverse osmosis membrane technology.
Description
Technical field
The utility model relates to rubbish high density percolate field, particularly relates to a kind of nanofiltration Integrated Processing System of rubbish high density percolate.
Background technology
The treatment process that can reach the present percolate emission standard of China is also few, mainly contains following several:
(1) deamination-UASB-SBR-micro-filtration/ultrafiltration-RO reverse osmosis membrane;
(2) UASB-A/O MBR-NF nanofiltration-RO reverse osmosis membrane;
(3) micro-filtration-secondary disc tube reverse osmosis (dt-ro) film (DT-RO);
In the above-mentioned technique (1), adopting deammoniation tower physical chemistry method removal of ammonia and nitrogen can bring a series of problem, mainly is to have the problems such as deammoniation tower causes that secondary pollution, the absorption liquid of ammonia nitrogen can't be processed; There is the halfway problem of removing in intermittent activated sludge process (SBR) technique for the ammonia nitrogen of removing in the percolate; The main coiled reverse osmosis membrane that adopts in the RO reverse osmosis membrane technique, this film moves very unstablely, seriously polluted under the high operation condition of organic contamination substrate concentration, and film is changed frequently, and the system recoveries rate is low.
In the technique (2), it is larger that topmost problem is that the MBR system is affected by temperature and influent quality, can't guarantee to enter water quality stable of nanofiltration membrane system, therefore, although the nanofiltration membrane system can the exclusive segment salinity, remove partial organic substances, this technique mainly for be all relatively low percolates of refuse landfill pollutent and salinity, be applied to the high concentrated organic waste liquid of comprehensive garbage disposal factory, still can't guarantee the stably reaching standard of water outlet.
In the technique (3), DTRO is the treatment technology that is derived from Germany, in Germany successful application precedent has been arranged.Yet the fact shows, the technology of Germany also is not suitable for the percolate from garbage filling field that China processes without any classification, especially be not suitable for the percolate of metropolitan high concentration COD and ammonia nitrogen feature, such as: the DTRO treatment process that Beijing refuse landfill is used in earlier stage, just can't continue operation in 3 months as a result, have at last adopt MBR biochemical process and NF membrane process to process.In addition, the concentrated solution after German DTRO processes all is the way that adopts evaporating, concentrating and crystallizing, makes the thorough detachment system of pollutent and salt, and domestic existing concentrated solution treatment process is to adopt to recharge the landfill district, and ammonia nitrogen and salt all do not have to remove.Ammonia nitrogen has obvious restraining effect to anaerobion, and salt more can cause the percolate salinity accumulation in the landfill yard, therefore, it is the process that artificially landfill percolate water quality is worsened that the dense water of reverse osmosis recharges, and finally react on expensive treatment system, cause the reverse osmotic pressure after for some time sharply to increase, effluent quality worsens.
The water quality of percolate has significant difference with the impact of the factors such as component, local climate, hydrogeology, landfill time and land-fill method of rubbish.Its feature mainly contains: (1) organic concentration is high.COD in the percolate and the concentration of BOD5 reach as high as several ten thousand mg/L.(2) metal content is high.Contain ten many kinds of metal ions in the percolate, wherein iron and zinc are higher in the acid fermentation stage, and the concentration of iron can reach about 200mg/L, and zinc concentration can reach about 130mg/L.(3) change of water quality is large.The water quality of percolate depends on the make of landfill yard, the kind of rubbish, quality, quantity and landfill year number length.(4) ammonia-nitrogen content is high.In the percolate ammonia nitrogen concentration along with garbage loading embeading year number increase and increase, can be up to about 2000mg/L.When ammonia nitrogen concentration is too high, can affect microbic activity, reduce the effect of biological treatment.(5) nutritive props imbalance.For biochemical treatment, nutritive element ratio suitable in the sewage is C:N:P=100:5:1, and C:P 〉=300 in the general percolate differ larger with the needed phosphoric of microorganism growth.
Percolate is to have chronic and waste water acute toxicity, and its pollution modes is hidden, mainly by polluted-water and the soil health to surrounding resident, and to the environment structure serious threat, as not dealing carefully with, will be so that pollute last very long.Mountain, land for growing field crops, nineteen ninety-five Guangdong refuse landfill generation pollution incident, percolate enters water body, cause lower 2 kilometers smelly with interior well water, simultaneously contaminated soil and underground water, influenced area fails to recover so far.China's Eastern Lanzhou basin wild goose beach waterhead area is discarded because of Landfill Leachate Pollution, and ground water ground, western basin part well is scrapped.The luxuriant of Macao and Zhuhai City's intersection encloses because Macao's leachate pollutes, and makes the fishes and shrimps disappearance of local river, farmland lose and receive etc.
Because contain more hardly degraded organic substance in the percolate, generally after biochemical treatment, COD concentration is still in 500～2000mg/L scope.Hence one can see that COD of waste leachate and BOD5 concentration are 10～100 times of sanitary sewage, and other inorganicss and mineral ion are the decades of times of surface water V class standard (GB3838-2008), even hundreds of times.Therefore, the percolate water quality characteristic is the high and complicated component of pollution concentration, and percolate is selected suitable processing mode, makes its qualified discharge, and is extremely urgent.
Generally speaking, even for the percolate that hangs down Pollutant levels of landfill yard, more than three kinds for the treatment of process still have more problem, and the high density pollution thing percolate that produces for the comprehensive garbage disposal field, just more can't stablize and reach standard-required, even water outlet can not reach the requirement of table 2 and table 3 pair Sewage Water Emissions concentration limit among " refuse landfill pollutent control criterion " GB16889-2008 at all, for the particular surroundings sensitive area, if can not guarantee the stably reaching standard of water outlet, then can bring comparatively serious pollution problem.
Along with the development of membrane technology, increasing membrane filtration technique is applied to sewage treatment area.Conventional membrane for water treatment technology comprises the technology such as microfiltration membrane (MF), ultra-filtration membrane (UF), nanofiltration membrane (NF) and reverse osmosis membrane (RO), the development of membrane technique at first is that development gets up on the basis of satisfying people's drinking water treatment, but the critical shortage of and water resources day by day serious along with environmental pollution, membrane technique is used as a practical technique in waste water control and reuse more and more widely.Usually membrane sepn is usually used in the advanced treatment after the second-stage treatment, mainly with pre-treatment such as the precipitation in micro-filtration (MF), the alternative conventional depth processing of ultrafiltration (UF), filtration, absorption, degerming, carry out water softening and desalination with nanofiltration (NF), reverse osmosis (RO) again.
Because the biochemical of percolate is relatively poor, the percolate Effluent criteria is according to the requirement of different areas, effluent quality is slightly different, but (GB16889-2008) standard-required is consistent with standard " household refuse landfill sites pollution control criterion " for percolate basically, depend merely on the requirement that biochemistry and MBR system do not reach Effluent criteria, so the MBR water outlet needs further advanced treatment.According to present existing treatment technology, the MBR water outlet also can further be processed by NF or RO system.Some percolate is processed primary standard or the circulating cooling water quality standard that the project water outlet requires to reach " integrated wastewater discharge standard " at present, in these standards, total nitrogen is not required or less demanding, if use reverse osmosis for these projects, up to standard no problem, but the amount of concentrated solution is larger, the subsequent disposal difficulty.Adopt the words of Tao Shi film NF90-270, the interdiction capability of this film is also very strong, operation energy consumption is high, so suggestion Tao Shi NF270-400 pleurodiaphragmatic in terspace spare is tested, test that this film is to COD and ammonia nitrogen, the interdiction capability of total nitrogen can adopt this film in the respective item afterwards, not only improve producing water ratio but also reduced the generation of concentrated solution, can reduce operation energy consumption simultaneously.
Summary of the invention
The nanofiltration Integrated Processing System that a kind of rubbish high density percolate is provided of the utility model uniqueness, the various techniques of percolate that can the treating refuse landfill yard all exist can not guarantee that stable water outlet is up to standard, can bring the comparatively problem of severe contamination; Can effectively process the percolate of comprehensive garbage disposal factory, make the rear water outlet of processing reach corresponding emission standard, avoid polluting.
As follows for addressing the above problem the technical scheme that adopts:
The utility model provides a kind of nanofiltration Integrated Processing System of rubbish high density percolate, and the nanofiltration Integrated Processing System of described rubbish high density percolate comprises: high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering and grating sensing monitoring device; It is characterized in that described high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering connect successively; Be provided with in the described reverse osmosis settler: internal recycle concentrate recirculation pipeline and outer circulation concentrated water drainage waterpipe; The right side wall upper end of described nano-filtration membrane filter is provided with clear liquid water outlet and concentrated solution water outlet;
Wherein, comprise successively in the described nano-filtration membrane filter: first paragraph high-pressure circulation pump, first paragraph nanofiltration membrane component, second segment high-pressure circulation pump, second segment nanofiltration membrane component, the 3rd section high-pressure circulation pump and the 3rd section nanofiltration membrane component; Described first paragraph high-pressure circulation pump is respectively corresponding configuration with first paragraph nanofiltration membrane component, second segment high-pressure circulation pump and second segment nanofiltration membrane component, the 3rd section high-pressure circulation pump with the 3rd section nanofiltration membrane component; Described nanofiltration membrane component comprises that nanofiltration membrane putamina and external-compression type nanofiltration membrane cross filter core.
Wherein, comprise successively in the described nano-filtration membrane filter: described first paragraph nanofiltration membrane component is connected between the fluid inlet of the concentrated solution water outlet of described first paragraph high-pressure circulation pump and second segment high-pressure circulation pump, described second segment nanofiltration membrane component is connected between the fluid inlet of the liquid outlet of second segment high-pressure circulation pump and the 3rd section high-pressure circulation pump, and described the 3rd section nanofiltration membrane component is connected between the opening for feed of the liquid outlet of the 3rd section high-pressure circulation pump and percolate pond for recovering.
Wherein, described grating sensing monitoring device setting comprises into water monitored conductivity device and water outlet conductivity monitor, described water inlet monitored conductivity device is located at the interior bottom of internal recycle concentrate recirculation pipeline in the reverse osmosis settler, and described water outlet conductivity monitor is located at the interior top of outer circulation concentrated water drainage waterpipe in the reverse osmosis settler.
With respect to prior art, the utility model has following advantage:
The water emission standard is also increasingly strict, especially the local emission standard of some developed regions, to be strict in national standard far away, along with socioeconomic fast development, the percolate emission standard also is bound to more and more stricter, especially " household refuse landfill sites pollution control criterion " (GB16889-2008) implement after, begin to do the more conservative of design consideration, the film system of rear end is take reverse osmosis as main, though it is no problem producing water up to standard, producing a large amount of concentrated solutions also is a difficult problem of processing in the industry.To adopt flexibly different films to carry out terminal process in order requiring for different water outlets, to control simultaneously the generation of concentrated solution.
According to different areas and different product water purposes, the percolate Effluent criteria also has difference, require to use for producing water, have and explicitly call for producing TDS in the water, then need to process by reverse osmosis, the perhaps NF/RO processing of connecting together, there is not saltiness to require for producing water, then can adopt the organism interdiction capability strong, and the relatively low nanofiltration membrane of ratio of desalinization is processed, can improve producing water ratio like this, reduce the generation of concentrated solution, so percolate filters in project verification research nanofiltration membrane system of company.
Research is take existing Weihai percolate treatment station as the major technique carrier, after systematic research, obtain reliably service data and control parameter, can well instruct later technological design and commissioning test, and other industrial wastewater pollutions that are similar to leachate quality are also had very large directive significance, application prospect is extensive.
Simultaneously, can realize in the mode that physics, chemistry and bioremediation organically combine comprehensive garbage disposal field percolate being processed, for the organism of processing each stage different molecular structures and molecular weight, the colloidalmaterial of different-grain diameter and particulate matter, reach pointed processing, Effective Raise to comprehensive garbage disposal field percolate, particularly to the treatment effect without the comprehensive treating process field percolate of refuse classification, make water outlet reach among " refuse landfill pollutent control criterion " GB16889-2008 requirement to the Sewage Water Emissions concentration limit.
Description of drawings
Fig. 1 is the nanofiltration Integrated Processing System process flow diagram of a kind of rubbish high density percolate of the present utility model;
Fig. 2 is nano-filtration membrane filter and the percolate pond for recovering process flow diagram in the nanofiltration Integrated Processing System of a kind of rubbish high density percolate of the present utility model.
Embodiment
Below in conjunction with embodiment, further set forth the utility model.
Embodiment 1:
As shown in Figure 1, 2, the nanofiltration Integrated Processing System of a kind of rubbish high density percolate of the present utility model, the nanofiltration Integrated Processing System of described rubbish high density percolate comprises: high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering and grating sensing monitoring device; It is characterized in that described high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering connect successively; Be provided with in the described reverse osmosis settler: internal recycle concentrate recirculation pipeline and outer circulation concentrated water drainage waterpipe; The right side wall upper end of described nano-filtration membrane filter is provided with clear liquid water outlet and concentrated solution water outlet.
Embodiment 2:
As shown in Figure 1, 2, the nanofiltration Integrated Processing System of a kind of rubbish high density percolate of the present utility model, the nanofiltration Integrated Processing System of described rubbish high density percolate comprises: high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering and grating sensing monitoring device; It is characterized in that described high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering connect successively; Be provided with in the described reverse osmosis settler: internal recycle concentrate recirculation pipeline and outer circulation concentrated water drainage waterpipe; The right side wall upper end of described nano-filtration membrane filter is provided with clear liquid water outlet and concentrated solution water outlet; Comprise successively in the described nano-filtration membrane filter: first paragraph high-pressure circulation pump, first paragraph nanofiltration membrane component, second segment high-pressure circulation pump, second segment nanofiltration membrane component, the 3rd section high-pressure circulation pump and the 3rd section nanofiltration membrane component; Described first paragraph high-pressure circulation pump is respectively corresponding configuration with first paragraph nanofiltration membrane component, second segment high-pressure circulation pump and second segment nanofiltration membrane component, the 3rd section high-pressure circulation pump with the 3rd section nanofiltration membrane component; Described nanofiltration membrane component comprises that nanofiltration membrane putamina and external-compression type nanofiltration membrane cross filter core.
Embodiment 3:
As shown in Figure 1, 2, the nanofiltration Integrated Processing System of a kind of rubbish high density percolate of the present utility model, the nanofiltration Integrated Processing System of described rubbish high density percolate comprises: high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering and grating sensing monitoring device; It is characterized in that described high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering connect successively; Be provided with in the described reverse osmosis settler: internal recycle concentrate recirculation pipeline and outer circulation concentrated water drainage waterpipe; The right side wall upper end of described nano-filtration membrane filter is provided with clear liquid water outlet and concentrated solution water outlet; Comprise successively in the described nano-filtration membrane filter: first paragraph high-pressure circulation pump, first paragraph nanofiltration membrane component, second segment high-pressure circulation pump, second segment nanofiltration membrane component, the 3rd section high-pressure circulation pump and the 3rd section nanofiltration membrane component; Described first paragraph high-pressure circulation pump is respectively corresponding configuration with first paragraph nanofiltration membrane component, second segment high-pressure circulation pump and second segment nanofiltration membrane component, the 3rd section high-pressure circulation pump with the 3rd section nanofiltration membrane component; Described nanofiltration membrane component comprises that nanofiltration membrane putamina and external-compression type nanofiltration membrane cross filter core; Comprise successively in the described nano-filtration membrane filter: described first paragraph nanofiltration membrane component is connected between the fluid inlet of the concentrated solution water outlet of described first paragraph high-pressure circulation pump and second segment high-pressure circulation pump, described second segment nanofiltration membrane component is connected between the fluid inlet of the liquid outlet of second segment high-pressure circulation pump and the 3rd section high-pressure circulation pump, and described the 3rd section nanofiltration membrane component is connected between the opening for feed of the liquid outlet of the 3rd section high-pressure circulation pump and percolate pond for recovering.
Embodiment 4:
As shown in Figure 1, 2, the nanofiltration Integrated Processing System of a kind of rubbish high density percolate of the present utility model, the nanofiltration Integrated Processing System of described rubbish high density percolate comprises: high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering and grating sensing monitoring device; It is characterized in that described high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering connect successively; Be provided with in the described reverse osmosis settler: internal recycle concentrate recirculation pipeline and outer circulation concentrated water drainage waterpipe; The right side wall upper end of described nano-filtration membrane filter is provided with clear liquid water outlet and concentrated solution water outlet; Comprise successively in the described nano-filtration membrane filter: first paragraph high-pressure circulation pump, first paragraph nanofiltration membrane component, second segment high-pressure circulation pump, second segment nanofiltration membrane component, the 3rd section high-pressure circulation pump and the 3rd section nanofiltration membrane component; Described first paragraph high-pressure circulation pump is respectively corresponding configuration with first paragraph nanofiltration membrane component, second segment high-pressure circulation pump and second segment nanofiltration membrane component, the 3rd section high-pressure circulation pump with the 3rd section nanofiltration membrane component; Described nanofiltration membrane component comprises that nanofiltration membrane putamina and external-compression type nanofiltration membrane cross filter core; Comprise successively in the described nano-filtration membrane filter: described first paragraph nanofiltration membrane component is connected between the fluid inlet of the concentrated solution water outlet of described first paragraph high-pressure circulation pump and second segment high-pressure circulation pump, described second segment nanofiltration membrane component is connected between the fluid inlet of the liquid outlet of second segment high-pressure circulation pump and the 3rd section high-pressure circulation pump, and described the 3rd section nanofiltration membrane component is connected between the opening for feed of the liquid outlet of the 3rd section high-pressure circulation pump and percolate pond for recovering; Described grating sensing monitoring device setting comprises into water monitored conductivity device and water outlet conductivity monitor, described water inlet monitored conductivity device is located at the interior bottom of internal recycle concentrate recirculation pipeline in the reverse osmosis settler, and described water outlet conductivity monitor is located at the interior top of outer circulation concentrated water drainage waterpipe in the reverse osmosis settler.
Through evidence, the nanofiltration Integrated Processing System highly-efficient treatment of a kind of rubbish high density percolate of the present utility model, practicality, application prospect is wide.
Claims (4)
1. the nanofiltration Integrated Processing System of a rubbish high density percolate, the nanofiltration Integrated Processing System of described rubbish high density percolate comprises: high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering and grating sensing monitoring device; It is characterized in that described high density percolate liquid storage pool, leachate pretreatment pond, reverse osmosis settler, nano-filtration membrane filter, percolate pond for recovering connect successively; Be provided with in the described reverse osmosis settler: internal recycle concentrate recirculation pipeline and outer circulation concentrated water drainage waterpipe; The right side wall upper end of described nano-filtration membrane filter is provided with clear liquid water outlet and concentrated solution water outlet.
2. the nanofiltration Integrated Processing System of rubbish high density percolate according to claim 1 comprises in the described nano-filtration membrane filter: first paragraph high-pressure circulation pump, first paragraph nanofiltration membrane component, second segment high-pressure circulation pump, second segment nanofiltration membrane component, the 3rd section high-pressure circulation pump and the 3rd section nanofiltration membrane component successively; Described first paragraph high-pressure circulation pump is respectively corresponding configuration with first paragraph nanofiltration membrane component, second segment high-pressure circulation pump and second segment nanofiltration membrane component, the 3rd section high-pressure circulation pump with the 3rd section nanofiltration membrane component; Described nanofiltration membrane component comprises that nanofiltration membrane putamina and external-compression type nanofiltration membrane cross filter core.
3. the nanofiltration Integrated Processing System of rubbish high density percolate according to claim 1, comprise successively in the described nano-filtration membrane filter: described first paragraph nanofiltration membrane component is connected between the fluid inlet of the concentrated solution water outlet of described first paragraph high-pressure circulation pump and second segment high-pressure circulation pump, described second segment nanofiltration membrane component is connected between the fluid inlet of the liquid outlet of second segment high-pressure circulation pump and the 3rd section high-pressure circulation pump, and described the 3rd section nanofiltration membrane component is connected between the opening for feed of the liquid outlet of the 3rd section high-pressure circulation pump and percolate pond for recovering.
4. according to claim 1 and 2 or the nanofiltration Integrated Processing System of 3 described rubbish high density percolates, described grating sensing monitoring device setting comprises into water monitored conductivity device and water outlet conductivity monitor, described water inlet monitored conductivity device is located at the interior bottom of internal recycle concentrate recirculation pipeline in the reverse osmosis settler, and described water outlet conductivity monitor is located at the interior top of outer circulation concentrated water drainage waterpipe in the reverse osmosis settler.
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| CN201220477923.2U CN202785843U (en) | 2012-09-19 | 2012-09-19 | High-concentration landfill leachate nanofiltration integrated treatment system |
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| CN201220477923.2U CN202785843U (en) | 2012-09-19 | 2012-09-19 | High-concentration landfill leachate nanofiltration integrated treatment system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496079A (en) * | 2014-12-23 | 2015-04-08 | 北京桑德环境工程有限公司 | Treatment method for garbage leachate membrane concentrated solution |
| CN104761078A (en) * | 2014-01-08 | 2015-07-08 | 茅金声 | Sewage purifying treatment device |
| CN106082513A (en) * | 2015-10-20 | 2016-11-09 | 张勇军 | A kind of garbage leachate treatment device |
| CN106115976A (en) * | 2016-08-16 | 2016-11-16 | 长沙威保特环保科技股份有限公司 | A kind of series connection for landfill leachate treatment and disc tube reverse osmosis (dt-ro) equipment in parallel and application process thereof |
-
2012
- 2012-09-19 CN CN201220477923.2U patent/CN202785843U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104761078A (en) * | 2014-01-08 | 2015-07-08 | 茅金声 | Sewage purifying treatment device |
| CN104761078B (en) * | 2014-01-08 | 2017-05-17 | 茅金声 | Sewage purifying treatment device |
| CN104496079A (en) * | 2014-12-23 | 2015-04-08 | 北京桑德环境工程有限公司 | Treatment method for garbage leachate membrane concentrated solution |
| CN106082513A (en) * | 2015-10-20 | 2016-11-09 | 张勇军 | A kind of garbage leachate treatment device |
| CN106115976A (en) * | 2016-08-16 | 2016-11-16 | 长沙威保特环保科技股份有限公司 | A kind of series connection for landfill leachate treatment and disc tube reverse osmosis (dt-ro) equipment in parallel and application process thereof |
| CN106115976B (en) * | 2016-08-16 | 2022-08-23 | 长沙威保特环保科技股份有限公司 | Series and parallel disc tube type reverse osmosis equipment for landfill leachate treatment and application method thereof |
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Address after: Room 809 and 810, 8 / F, Chuangye building (Building 2, Xinghua Industrial Park), No.58, Second Street, Zhengzhou area (Jingkai), Henan pilot Free Trade Zone, Zhengzhou City, Henan Province, 450000 Patentee after: Shengao Lande Environmental Protection Technology Group Co.,Ltd. Address before: 450000 building 6, 1309 hanghai East Road, Zhengzhou Economic and Technological Development Zone, Zhengzhou City, Henan Province Patentee before: BIOLAND ENVIRONMENTAL TECHNOLOGIES GROUP Corp.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |