CN216236371U - Leachate treatment system of garbage transfer station - Google Patents
Leachate treatment system of garbage transfer station Download PDFInfo
- Publication number
- CN216236371U CN216236371U CN202122162089.XU CN202122162089U CN216236371U CN 216236371 U CN216236371 U CN 216236371U CN 202122162089 U CN202122162089 U CN 202122162089U CN 216236371 U CN216236371 U CN 216236371U
- Authority
- CN
- China
- Prior art keywords
- membrane group
- water
- primary
- pipeline
- transfer station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a garbage transfer station percolate treatment system, wherein at least two groups of filters of a primary filter system are communicated in parallel, a sand filter pipeline is connected with a chemical cleaning box, a pressure gauge and a water inlet pump, a primary membrane group and a secondary membrane group of a precise filter system are respectively communicated with a primary high-pressure pump and a secondary high-pressure pump, a concentrated water discharge pipeline, a water production pipeline and a raw water pipeline are connected with the primary membrane group and the secondary membrane group, the water production pipeline is communicated with a degassing tower, water filtered and purified by the secondary membrane group is degassed by the degassing tower and then stored in the water production tank, the two-stage membrane groups combined in parallel and in series are adopted to be matched with the primary filter system and the precise filter system, garbage percolate can be treated in a two-stage series mode, the desalination rate reaches more than 98 percent, the produced water is completely discharged up to the standard, the problem of tail-end concentrated solution treatment is solved, the treatment efficiency is high, and the operation cost is low, the full treatment of the landfill leachate is realized.
Description
Technical Field
The utility model belongs to the field of garbage treatment, and particularly relates to a harmless treatment system for leachate of a garbage transfer station.
Background
With the improvement of social and economic levels, the output of garbage mainly from domestic waste and kitchen garbage is increasing, and the harmless treatment of garbage is always concerned. The sewage generated by the garbage transfer operation belongs to native garbage leachate, and the sewage is allowed to be discharged after being treated according with relevant standards. The leachate of the refuse transfer station has complex components, contains a large amount of organic matters, suspended matters, ammonia nitrogen, COD, heavy metal ions and germs, and has large concentration fluctuation of the leachate, so the requirement on the leachate treatment technology is high. At present, most of garbage transfer stations collect percolate and transport the percolate to a sewage plant or a mobile treatment vehicle for treatment, and the percolate is directly discharged to a sewer without treatment. The former has the shortcoming of high treatment cost and low efficiency, and the latter can seriously pollute the environment, therefore provides a filtration liquid processing system that can stably operate and satisfy discharge-to-standard requirement, and is vital to the rubbish transfer station.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a garbage transfer station leachate treatment system which has high treatment efficiency, standard discharge, high operation stability and high automatic treatment level.
In order to solve the technical problems, the utility model adopts the technical scheme that: a percolate treatment system of a garbage transfer station, which comprises a raw water tank, a primary filtering system, a precise filtering system and a degassing tower which are sequentially communicated, the primary filtering system comprises a sand filter and at least two groups of filters communicated with the output end of the sand filter, the filters are communicated in a parallel connection mode, the input end of the sand filter is also connected with a chemical cleaning box, a pressure gauge and a water inlet pump, the precise filtering system comprises a primary membrane group and a secondary membrane group which are connected in series, the input ends of the primary membrane group and the secondary membrane group are also provided with a primary high-pressure pump and a secondary high-pressure pump, the output ends of the primary membrane group and the secondary membrane group are provided with a concentrated water discharge pipeline, a water production pipeline and a raw water pipeline, the water production pipeline is communicated with the degassing tower, water filtered and purified by the secondary membrane group is degassed by the degassing tower and then stored in the water production tank, and the raw water pipeline is communicated with the raw water tank.
Further, the inlet of the sand filter is communicated with a chemical cleaning box.
Further, the inlet of the sand filter is communicated with the water production tank.
By implementing the technical scheme of the utility model, the two-stage membrane group combining parallel connection and series connection is adopted, and the primary filtering system and the precise filtering system are matched, so that the landfill leachate can be treated in a two-stage series mode, the desalination rate reaches more than 98 percent, the produced water is discharged after reaching the standard, the problem of treating tail end concentrated solution is solved, the treatment efficiency is high, the operation cost is lower than that of the existing landfill leachate treatment technology, the full treatment of the landfill leachate is realized, and under the condition that one stage of the membrane group fails, the other stage of membrane group can still normally operate, the problem of system paralysis caused by local equipment faults is solved, the two stages of membrane groups are mutually coordinated and operated, flexible switching is realized, the system operation is stable, the system can adapt to complex working conditions to operate in a series (single-line) mode and can also adapt to parallel (double-line) mode operation in simple working conditions, and the automatic control of the operation is convenient to realize.
Drawings
Fig. 1 is a schematic view of a leachate treatment system of a refuse transfer station.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the leachate treatment system of the garbage transfer station mainly comprises a raw water tank, a sand filter, a chemical cleaning tank, a precision filter, a primary DTRO membrane group, a secondary DTRO membrane group, a product water tank and a degassing tower.
The raw water tank stores garbage leachate, primary membrane leachate and partial flushing water of the primary membrane leachate, the chemical cleaning tank stores chemical cleaning agents and partial flushing water, the degassing tower separates final produced water, and the production tank stores final produced water.
The sand filter is used for filtering out larger suspended matters so as to ensure the normal operation of subsequent treatment. The precision filter is used for removing smaller particles with the size larger than 10 micrometers so as to avoid damaging the DTRO membrane group and guarantee the subsequent treatment operation. The precision filters are connected in parallel, only one precision filter is started when the precision filters normally run, the other precision filter is used as an emergency standby, and when one precision filter breaks down or needs to be replaced, the other precision filter is switched to.
The primary DTRO membrane group is used for treating leachate stock solution, partial flushing water, partial primary leachate and secondary concentrated solution and generating concentrated solution and primary leachate. The secondary DTRO membrane group is used for treating primary leachate or leachate stock solution and generating concentrated solution and secondary leachate.
The import of sand filter communicates former water tank, chemical cleaning case and product water tank respectively, and the import pipeline installation sand filtration booster pump of sand filter, the sand filtration booster pump is with filtration liquid, chemical cleaning agent or wash water pump advance in the sand filter. The outlet of the sand filter is communicated with two groups of precision filters which are connected in parallel.
The outlets of the two groups of precision filters are respectively communicated with two stages of DTRO membrane groups, and a high-pressure pump is arranged between the inlet pipeline of each DTRO membrane group and the precision filter. The primary DTRO membrane group is also connected in series with the secondary DTRO membrane group through a pipeline.
The concentrated side outlet of the first-stage DTRO membrane group is respectively communicated with the chemical cleaning box and the concentrated water recharging port, the dilute side outlet of the first-stage DTRO membrane group is respectively communicated with the chemical cleaning box, the raw water tank and the second-stage DTRO system, and the concentrated side outlet of the second-stage DTRO membrane group is respectively communicated with the chemical cleaning box and the raw water tank. The dilute side outlet of the second-stage DTRO membrane group is respectively communicated with the chemical cleaning box and the degassing tower. The outlet of the degassing tower is communicated with a water production tank, and the outlet of the water production tank is communicated with a sand filtration booster pump.
The working flow of the leachate treatment method of the garbage transfer station is as follows:
1. and collecting percolate generated by the garbage transfer station to a raw water tank, adding concentrated sulfuric acid to adjust the water quality and the pH value, opening a water inlet valve and a sand filtration booster pump, pumping the percolate into a sand filter by the sand filtration booster pump, and filtering out larger particle suspended matters.
2. Adding a scale inhibitor before inputting the percolate into a precision filter. The leachate has high content of easily-scaling ions such as calcium, magnesium, barium and the like and high content of silicate, the salts are easy to generate a supersaturated state on the concentrated solution side in the subsequent treatment, a scale inhibitor is required to be added in front of a filter, and the scale inhibitor is diluted by adding 20 times of water for use, so that the occurrence of scaling phenomena of silica scale and sulfate is prevented.
3. The precision filter filters out smaller particle suspended matters with the particle size of more than 10 microns, and because the inlets and the outlets of the two sets of precision filters are connected in parallel, the precision filter and the matched DTRO membrane group can be switched flexibly at any time.
4. The primary high-pressure pump pumps the leachate into a primary DTRO membrane group, the primary DTRO membrane group filters to generate primary concentrated solution and primary leachate, the primary concentrated solution is recharged to a garbage compression workshop, and the primary leachate is pumped into a secondary DTRO membrane group by a secondary high-pressure pump or flows back to a raw water tank.
5. And filtering the secondary DTRO membrane group to generate secondary leachate and secondary concentrated solution, refluxing the secondary concentrated solution to the original water tank, and adding alkali into the secondary leachate to adjust the pH value so as to reach the discharge standard. And (4) blowing off carbon dioxide and part of ammonia nitrogen through the secondary leachate with the adjusted pH value through a degassing tower, and finally enabling the produced water to enter a water production tank.
The flushing and chemical cleaning operation of the percolate treatment system of the refuse transfer station can be carried out in a single-stage DTRO membrane group filtration mode.
The leachate treatment system of the refuse transfer station operates under the action of the sand filtration booster pump and the high-pressure pump, and the landfill leachate stock solution and the concentrated solution can be circularly treated in the system for many times. The landfill leachate and raw water can select a low-cost one-stage DTRO membrane group filtering mode or a good-effect two-stage DTRO membrane group filtering mode according to the leachate raw liquid index.
The rubbish transfer station filtration liquid processing system shuts down or the system operation duration reaches the default at every turn, and when producing the water tank and reaching and predetermineeing high liquid level, the automatic start washing procedure, flushometer and sand filtration booster pump are opened, finally produce water and wash clean the membrane group at different levels of system in proper order, the washing water backward flow is kept in to chemical cleaning box. In the operation process of the leachate treatment system of the garbage transfer station, setting a chemical cleaning period (acid cleaning time is 7 days, and alkali cleaning time is 14 days) according to empirical values, starting a flushing valve, a primary cleaning valve, a secondary cleaning valve and a sand filtration booster pump, sequentially cleaning the membrane surfaces of all stages by using chemical cleaning agents, circulating the cleaning agents between a chemical cleaning box and the membrane groups, and finishing the chemical cleaning after 1.5-2 hours.
The detailed instrumentation and effects shown in FIG. 1 are in the following table:
| serial number | Instrument code | Instrument name | Instrument action |
| 2 | PH102 | PH meter | Displaying the water production pressure of the two-stage DTRO membrane group, and feedback-adjusting the addition amount of alkali |
| 3 | CAI101 | Conductivity meter | Display the conductivity of the inlet water of the sand filter |
| 4 | CAI102 | Conductivity meter | Display the conductivity of the first-stage DTRO membrane produced water |
| 5 | CAI103 | Conductivity meter | Display the conductivity of the two-stage DTRO membrane produced water |
| 6 | PS101 | Pressure switch | Low-pressure protection of a primary high-pressure pump |
| 7 | PS102 | Pressure switch | Low-pressure protection of two-stage high-pressure pump |
| 8 | FI101 | Flow meter | Display sand filter water inlet flow |
| 9 | FI102 | Flow meter | Displaying the concentrated water flow of the first-stage DTRO membrane group |
| 10 | FI103 | Flow meter | Displaying the water flow rate of the first-stage DTRO membrane group |
| 11 | FI104 | Flow meter | Displaying the concentrated water flow of the two-stage DTRO membrane group |
| 12 | FI105 | Flow meter | Displaying the water flow rate of the two-stage DTRO membrane group |
| 13 | PI101 | Pressure gauge | Display sand filter inlet pressure |
| 14 | PI102 | Pressure gauge | Display sand filter outlet pressure |
| 15 | PI103 | Pressure gauge | Display first-stage precision filter outlet pressure |
| 16 | PI104 | Pressure gauge | Display primary DTRO membrane group inlet pressure |
| 17 | PI105 | Pressure gauge | Display the concentrated water pressure of the primary DTRO membrane group |
| 18 | PI106 | Pressure gauge | Display of first-stage DTRO membrane composition produced waterPressure of |
| 19 | PI107 | Pressure gauge | Display second-stage precision filter outlet pressure |
| 20 | PI108 | Pressure gauge | Display of two-stage DTRO membrane group inlet pressure |
| 21 | PI109 | Pressure gauge | Display the concentrated water pressure of the two-stage DTRO membrane group |
| 22 | PI110 | Pressure gauge | Display the water production pressure of the two-stage DTRO membrane set |
In the practical application process, because the raw water has very complex components and extremely high pollutant concentration, the required pressure of the primary DTRO membrane group is very high, and a high-power high-pressure pump needs to be configured, so that the cost of the system for treating the landfill leachate is increased. In order to measure the cost problem, if the primary DTRO membrane group is replaced by DTNF and DTCOD (disc tube type COD material separation membrane), the concentration is reduced after the treatment of the primary DTNF or DTCOD, the burden of the primary high-pressure pump can be reduced, the treatment of the secondary DTRO membrane group is carried out, the landfill leachate can be still treated rapidly and efficiently under the original rated power condition of the secondary high-pressure pump, the competence of the system to the high-concentration working condition is ensured, and the treatment effect can be ensured.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.
Claims (3)
1. The utility model provides a rubbish transfer station filtration liquid processing system, includes former water tank, elementary filtration system, secondary filter system and the degasser that communicates in proper order, its characterized in that: elementary filtration system includes the sand filter, communicates in the filter of sand filter output, the filter is at least two sets ofly and adopts the parallel mode intercommunication the input of sand filter still is connected with chemistry and washs case, manometer and intake pump, accurate filtration system is including the one-level membrane group and the second grade membrane group of establishing ties, still is provided with one-level high-pressure pump and second grade high-pressure pump at the input of one-level membrane group and second grade membrane group the output of one-level membrane group and second grade membrane group is provided with dense water and arranges pipeline, product water pipeline and raw water pipeline outward, product water pipeline intercommunication degasser tower, and the water after second grade membrane group filters purification is stored to the product water tank after degasser, raw water pipeline and raw water tank intercommunication.
2. The leachate treatment system of the refuse transfer station of claim 1, wherein: and the inlet of the sand filter is communicated with a chemical cleaning box.
3. The leachate treatment system of the refuse transfer station according to claim 1 or 2, wherein: the inlet of the sand filter is communicated with the water production tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122162089.XU CN216236371U (en) | 2021-09-08 | 2021-09-08 | Leachate treatment system of garbage transfer station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122162089.XU CN216236371U (en) | 2021-09-08 | 2021-09-08 | Leachate treatment system of garbage transfer station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216236371U true CN216236371U (en) | 2022-04-08 |
Family
ID=80986261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122162089.XU Active CN216236371U (en) | 2021-09-08 | 2021-09-08 | Leachate treatment system of garbage transfer station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216236371U (en) |
-
2021
- 2021-09-08 CN CN202122162089.XU patent/CN216236371U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216236371U (en) | Leachate treatment system of garbage transfer station | |
| CN211226612U (en) | Integrated treatment device for removing hydrogen sulfide in landfill leachate | |
| CN204509018U (en) | Metal finishing Sewage advanced treatment and reclaiming system | |
| CN113620476A (en) | Leachate treatment system and method for garbage transfer station | |
| CN208234640U (en) | A kind of device improving sewage stripping tower bottom reuse purified water water quality | |
| CN213834874U (en) | Concentrated water recycling system for pure water station | |
| CN212479355U (en) | Open circulating water comprehensive utilization device of thermal power factory | |
| CN212222745U (en) | Domestic sewage treatment device with integrated membrane bioreactor | |
| CN209872637U (en) | Drinking water purifying equipment with ultraviolet sterilizer | |
| CN112875804A (en) | Process for reducing ultrafiltration self-water utilization rate and improving water yield recovery rate | |
| CN209989208U (en) | SCR regeneration denitration catalyst effluent disposal system | |
| CN218146098U (en) | Device for improving concentrated water reuse rate in two-stage reverse osmosis mechanism | |
| CN220723873U (en) | Wastewater treatment recovery system | |
| CN104445802A (en) | Multistage settlement treatment system for paper-making wastewater | |
| CN205133267U (en) | Circulating water comprehensive use of resources system of steam power plant | |
| CN218893500U (en) | High-efficiency two-stage RO device | |
| CN215756865U (en) | Integrated form regeneration water treatment facilities | |
| CN204939111U (en) | A kind of industrial wastewater treatment device after sofening treatment | |
| CN204873983U (en) | Filter equipment backwash water processing system | |
| CN214734933U (en) | Landfill kitchen leachate treatment device | |
| CN215327099U (en) | Ultrafiltration reverse osmosis purified water return system | |
| CN213294981U (en) | Device for treating nickel-containing wastewater by using microfiltration tubular membrane and nanofiltration tubular membrane | |
| CN214360559U (en) | Household water-saving nanofiltration membrane water purifier | |
| CN220449874U (en) | Reclaimed water recycling equipment for multi-stage filtration water conservation and high-quality produced water | |
| CN216766088U (en) | Secondary water supply direct drinking water system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |