CN208632331U - Garbage percolation liquid treating system - Google Patents
Garbage percolation liquid treating system Download PDFInfo
- Publication number
- CN208632331U CN208632331U CN201821075493.5U CN201821075493U CN208632331U CN 208632331 U CN208632331 U CN 208632331U CN 201821075493 U CN201821075493 U CN 201821075493U CN 208632331 U CN208632331 U CN 208632331U
- Authority
- CN
- China
- Prior art keywords
- pond
- film reaction
- connect
- tank
- garbage percolation
- 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
Abstract
The utility model relates to a kind of garbage percolation liquid treating system, it include pretreatment pool, deflector anaerobic pond, film reaction system, equipment room, chemicals dosing plant and adjust PH device；The landfill leachate for squeezing station enters pretreatment pool by elevator pump, the pretreatment tank includes the grille well, oil separation grit chamber and conditioning tank set gradually, waste water in the conditioning tank flows into primary sedimentation tank by sewage conduct, the primary sedimentation tank is connect with deflector anaerobic pond, the deflector anaerobic pond is connect by sewage conduct with film reaction system, and film reaction system includes the anoxic pond set gradually, sedimentation basin, biochemistry pool and film reaction pond.The utility model treatment effect is reliable and stable, high degree of automation, and secondary pollution is few.
Description
Technical field
The utility model relates to technical field of sewage more particularly to a kind of garbage percolation liquid treating systems.
Background technique
Landfill leachate is mainly derived from the waste water generated when three parts, i.e. garbage-compressing and detests in compression process
The moisture content that oxygen biological respinse generates；Rainwater catchment and shallow layer surface seepage water in compressional zone.Contain type in landfill leachate
Many and diverse organic pollutant, COD concentration are high, the mg/litre from thousands of to tens of thousands of；The especially difficult carboxyl being directly biodegradable
Benzene.Heterocyclic and polyphenyls macromolecular organic compound content are high, up to thousands of mg/litres.
With the extension of house refuse time, there are great differences for leachate quality.Generally, house refuse initial stage, diafiltration
Liquid is in black, and good biodegradability is easily handled, and with the extension of time, percolate is gradually brown, biodegradability becomes
Difference, and ammonia nitrogen concentration obviously increases, and is increasingly difficult to handle.
Utility model content
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of garbage percolation liquid treating system, treatment effects
It is reliable and stable.
Purpose of the utility model is realized as follows:
A kind of garbage percolation liquid treating system, it includes pretreatment pool, deflector anaerobic pond, film reaction system, equipment room, adds
Medicine device and tune PH device；The landfill leachate for squeezing station enters pretreatment pool by elevator pump, the pretreatment tank include according to
Grille well, oil separation grit chamber and the conditioning tank of secondary setting, the waste water in the conditioning tank flows into primary sedimentation tank by sewage conduct, described
Primary sedimentation tank is connect with deflector anaerobic pond, and the chemicals dosing plant is connect by drug feeding pipeline with primary sedimentation tank by metering pump, the tune
PH device is connect by drug feeding pipeline with primary sedimentation tank by metering pump；The deflector anaerobic pond passes through sewage conduct and film reaction system
System connection, film reaction system includes the anoxic pond set gradually, sedimentation basin, biochemistry pool and film reaction pond；The film reaction pond one
Side is equipped with equipment room；The film reaction pond is connect by water supply pipe with cleaning barrel；The biochemistry pool and film reaction pond pass through
Air pipeline is connect with two blowers.
A kind of garbage percolation liquid treating system, the conditioning tank is interior to be equipped with high liquid level and low liquid level, high liquid level and low liquid level
Place is equipped with ball-cock assembly.
A kind of garbage percolation liquid treating system, the deflector anaerobic pond include water inlet distribution system, reaction zone, three phase separation
Device, outlet system, sludge drainage system, collecting methane system, temperature compensation system and sample detection system.
A kind of garbage percolation liquid treating system, the film reaction bottom of pond portion pass through sludge pump and the second liquid by sludge pipe
Body spinner flowmeter is connect with anoxic pond；The bottom of each reaction zone in the anoxic pond and deflector anaerobic pond is logical equipped with sludge pipe
To conditioning tank.
A kind of garbage percolation liquid treating system, the water supply pipe connection lead to chemicals dosing plant, adjust PH device and cleaning
Bucket, the cleaning barrel connect equipment room by water supply pipe.
A kind of garbage percolation liquid treating system is set in the equipment room there are two pump through water supply pipe by motor-driven valve
It is connected to cleaning barrel, is equipped between motor-driven valve and two pumps and increases empty table, described two pumps pass through the first liquid by water supply pipe
Body spinner flowmeter is connect with outside network.
A kind of garbage percolation liquid treating system, described two blowers are by gas bag and two gas rotameters and biochemistry
Pond is connected with film reaction pond.
Blender is equipped in a kind of garbage percolation liquid treating system, the chemicals dosing plant and tune PH device.
Compared with prior art, the utility model has the beneficial effects that
1) treatment effect is reliable and stable
The utility model is directed to the characteristics of pollutants from landfill leachate, is removed using different process:
Pretreating process removes oil removal and colloid, vegetable and animals oils, adjusts pH；
Anaerobism-A/0-MBR technique removes biochemical organic matter and ammonia nitrogen；
Oneself is verified validity and stability of the process above in landfill leachate treatment, can ensure that processing water outlet
Reach the requirement of discharge standard.
2) capacity of resisting impact load is strong
The pool capacity of biochemical system is larger, and influent concentration and inhibitory substance can be made to be diluted rapidly；
MBR technique ensure that higher biomass, and system is made to have stronger capacity of resisting impact load；
Air blower uses frequency control, automatically adjusts aeration intensity according to dissolved oxygen in pond, to adapt to water and concentration
Variation.
3) oxidation of coal and nitrifying process separately carried out, controlled respectively, guarantee the best ecological niche of different floras
The content of organics of landfill leachate is higher, and heterotroph growth rate is fast, and nitrifier is difficult to dominance.By oxidation of coal
It is carried out respectively in different zones with nitrifying process, helps to create most suitable microbial flora growth and breeding in each region
Environmental condition make full use of the processing capacity of each flora, play highest treatment effeciency.
4) design of biological denitrificaion is enhanced
This project influent ammonia nitrogen is relatively high, it is desirable that system nitric efficiency with higher.The design using biological denitrificaion as
The emphasis of design takes following enhancements to biochemical system:
Oxidation of coal and nitrification are separated, keep the water inlet carbon-nitrogen ratio of nitration section lower, the higher D0 of control nitration section is horizontal, is
Nitrifier provides more favorable environmental condition；
The ammonia nitrogen loading of nitration section and the denitrification rate of denitrification section have been all made of more conservative design value；
Dissolved oxygen is one of the key factor for influencing ammonia nitrogen removal frank.The utility model has fully considered nitrification to oxygen
Demand guarantees to supply the abundance of oxygen.
5) high degree of automation
In order to reduce the labor intensity of worker, mention automatic control level: present treatment station uses PLC control system, middle control
Room centralized displaying.
6) secondary pollution is few
The secondary pollution most outstanding of percolate treatment plant is that foul smell disturbs residents problem, as handle it is bad will will affect compression factory
It operates normally.The utility model secondary pollution is few.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Wherein:
Grille well 1, oil separation grit chamber 2, conditioning tank 3, ball-cock assembly 4, primary sedimentation tank 5, deflector anaerobic pond 6, anoxic pond 7, precipitating
Pond 8, biochemistry pool 9, film reaction pond 10, equipment room 11, chemicals dosing plant 12, adjust PH device 13, power control cabinet 14, blower 15, gas bag 16,
Gas rotameter 17, cleaning barrel 18, the first liquid rotor flowmeter 19, increase empty table 20, second liquid spinner flowmeter 21,
Water supply pipe 22, sewage conduct 23, sludge pipe 24, drug feeding pipeline 25, air pipeline 26, electric wire 27.
Specific embodiment
Embodiment 1:
Referring to Fig. 1, the utility model relates to a kind of garbage percolation liquid treating system, it includes grille well 1, oil removal sand setting
Pond 2, ball-cock assembly 4, primary sedimentation tank 5, deflector anaerobic pond 6, anoxic pond 7, sedimentation basin 8, biochemistry pool 9, film reaction pond 10, is set conditioning tank 3
11, chemicals dosing plant 12 and tune PH device 13 between standby.
The landfill leachate for squeezing station enters pretreatment pool by elevator pump, and the pretreatment tank includes the lattice set gradually
Grid well 1, oil separation grit chamber 2 and conditioning tank 3 are equipped with grid sheet in the grille well 1, be equipped in the conditioning tank 3 high liquid level and
Ball-cock assembly 4 is equipped at low liquid level, high liquid level and low liquid level, the waste water in the conditioning tank 3 is by elevator pump by sewage conduct
23, which flow into primary sedimentation tank 5, carries out coagulating sedimentation.
Part COD in landfill leachate exists in the form of suspended matter and colloid, and the molecular weight of this moieties is larger,
During biochemical treatment, first has to be hydrolyzed to small molecule dissolved organic matter, could be utilized by microbial cell.Hydrolysis
Stage needs the relatively long time, is the rate-limiting step of biochemical reaction.The utility model removes oil removal using coagulation process
With part colloidal substance, be conducive to the efficiency for improving subsequent biochemical processing.Coagulation does not remove dissolved organic matter substantially, right
The carbon-nitrogen ratio of biochemical system water inlet does not have too much influence.
Chemicals dosing plant 12 is connect by drug feeding pipeline 25 with primary sedimentation tank 5 by metering pump, and PH device 13 is adjusted to pass through metering pump
It is connect by drug feeding pipeline 25 with primary sedimentation tank 5.Blender is equipped in the chemicals dosing plant 12 and tune PH device 13.
The primary sedimentation tank 5 is connect with deflector anaerobic pond 6, the deflector anaerobic pond 6 include water inlet distribution system, reaction zone,
Outlet system, sludge drainage system, temperature compensation system and sample detection system, water inlet distribution system keep the organic matter in waste water uniform
Distribution is conducive to waste water and comes into full contact with microorganism react, is the key that raising reactor volume utilization rate, while also with stirring
Mix the effect of mixing；Reaction zone includes Sludge Bed and sludge suspension floor area, is the core of anaerobic reactor, is that culture and enrichment are detested
The region of oxygen animalcule, waste water and microorganism generate biochemical reaction herein, and organic matter is mainly decomposed by anaerobic bacteria herein；Out
Water system mainly equably collects the primary water of settling zone liquid level, is discharged outside reactor；Sludge drainage system periodically will be anti-
The excess sludge in device is answered to be discharged outside reactor；Temperature compensation system ensures the normal starting and operation of technique；Along pond body height
Multiple sampling monitoring mouths are set on degree, to facilitate state modulator of the system in debugging and normal operating phase, to ensure system
Efficiently, stablize, reliable operation.
The deflector anaerobic pond 6 is connect by sewage conduct 23 with film reaction system, and film reaction system includes setting gradually
Anoxic pond 7, sedimentation basin 8, biochemistry pool 9 and film reaction pond 10, using membrane module realize bioreactor separation be at waste water
The new process of reason, membrane module replace the sedimentation basin in traditional handicraft, solid microbe in isolating active mud mixed liquid and big
Molecular melting substance.
According to the setting position of membrane module, external membrane bioreactor and interior can be divided by being separated by solid-liquid separation membrane bioreactor
Set formula membrane bioreactor two major classes.External MBR is that membrane module and bioreactor are provided separately.In bioreactor
Mixed liquor is beaten after circulating pump is pressurized to the filter end of membrane module, and the penetration by liquid film in mixed liquor, becomes under pressure
System processing water outlet；Solid content, macromolecular substances etc. are then rejected by, and are flowed back into bioreactor with concentrate.External
The characteristics of membrane bioreactor, is: stable and reliable operation；Film is readily cleaned, replaces and adds；Membrane flux is larger.But in general item
Under part, extend the cleaning frequency of film, needs to provide higher film surface cross-flow flow velocity with circulating pump.In built-in MBR, membrane module
It is placed in inside bioreactor.After raw water enters membrane bioreactor, major part pollutant therein is mixed the activity in liquid
Sludge disintegration, then by film filtration effluent under suction pump or head difference (providing the pressure difference of very little) effect.Built-in MBR utilizes exposure
The upward shearing force of gas-liquid realizes the cross flow effects of film surface when gas, reduces the pollution to film.It is built-in compared with external MBR
Formula MBR biggest advantage is that power consumption is lower.
In view of the convenience installed and overhauled, the utility model selects built-in membrane component.
10 bottom of film reaction pond by sludge pump and second liquid spinner flowmeter 21 and is lacked by sludge pipe 24
Oxygen pond 7 connects.The bottom of each reaction zone in anoxic pond 7 and deflector anaerobic pond 6 is equipped with sludge pipe 24 and leads to conditioning tank 3.
10 side of film reaction pond connects equipment room 11.
The chemicals dosing plant 12 and adjusting be equipped in PH device 13 water supply pipe 22 for plus water, the water supply pipe
22 are connected with cleaning barrel 18, and the cleaning barrel 18 enters equipment room 11 by water supply pipe 22, is equipped in the equipment room 11
Two pumps are connected to cleaning barrel 18 by motor-driven valve by water supply pipe 22, are equipped between motor-driven valve and two pumps and increase empty table
20, described two pumps are connect by the first liquid rotor flowmeter 19 with outside network by water supply pipe 22.
The film reaction pond 10 is connect by water supply pipe 22 with cleaning barrel 18.
Two blowers 15 are by air pipeline 26 by gas bag 16 and two gas rotameters 17 and biochemistry pool 9 and film
Reaction tank 10 connects.
Power control cabinet 14 by electric wire 27 be connected to each elevator pump in the garbage percolation liquid treating system, metering pump,
Blower 15, motor-driven valve and pump.
A in A/O technique represents anoxic section；First O represents oxidation of coal section, i.e. carbonaceous organic material is oxidized removal；?
In aerobic process, the path for transformation of organic matter are as follows:
It proceeds as described above the microorganism of (oxidation of coal) and main body is accounted for different oxygen type and oxygen bacterium.Its main feature is that:
1. being food with organic matter, provide metabolism required carbon source and the energy by the decomposition to organic matter；
2. can not only carry out aerobic respiration, but also anaerobic respiration (fermentation) can be carried out.
3. there are also der Pilzs based on Zoogloea bacteria.
The path for transformation of ammonia nitrogen are as follows:
The microorganism of nitrification is carried out based on autotrophic type aerobic bacteria.Its feature:
1. the carbon source grown using inorganic carbon as cell；
2. generally obligate aerobic bacteria, is suppressed in anoxic；
3. perch is on activated sludge zoogloea surface, based on bacillus, coccus.
According to the above theoretical study results and engineering operation data, oxidation of coal and nitrifying process have its optimal ring respectively
Border condition, there are certain contradictions for the requirement to carbon-nitrogen ratio, dissolved oxygen levels, it may be assumed that in lower carbon-nitrogen ratio and higher dissolution
Under the conditions of oxygen, nitrifying bacteria community easily occupies advantage, and heterotroph is suppressed；On the contrary, in higher carbon-nitrogen ratio and lower dissolved oxygen
Under the conditions of, then it is heterotroph dominance, and nitrifier is suppressed.If mixed in aeration only one O sections in A/O technique
Under the conditions of conjunction, entire O sections is equivalent to a complete mix flow (CSTR), and the environmental condition in reactor everywhere is homogeneous
Together.Under a given environmental condition, it is not that heterotroph is suppressed, is exactly that nitrifier is suppressed；Even if seeking to one
A environmental condition can make two kinds of floras reach dynamic equilibrium, and such environmental condition also only makes two kinds of floras by one
Fixed inhibition cannot respectively play most highly active.And such dynamic equilibrium also compares and is difficult to maintain, and the stability of water outlet does not have
It is secure.
Based on the above reasons, we are divided into oxidation of coal section and nitration section for O sections.The carbon-nitrogen ratio of oxidation of coal section water inlet is relatively
Height, dissolved oxygen then cannot be excessively high, and heterotroph is made to occupy advantage in this section, play the removal effect to COD to the maximum extent.In nitre
Change section since most COD has been removed, water inlet carbon-nitrogen ratio is lower, and dissolved oxygen is then controlled in higher level, fills ammonia nitrogen
Divide nitrification.In design aspect, oxidation of coal section is using BOD elimination capacity as main design parameters, and nitration section is then with rate of nitrification song master
Want design parameter.It is separately controlled by the optimization to reactor design parameter and to operating parameter, makes oxidation of coal process and nitre
Change effect is attained by higher efficiency and removal rate.
The mixed liquor of nitration section is back to A sections.In A sections of generation denitrifications, reaction process are as follows:
By oxidation of coal-nitrification-denitrification process, landfill leachate organic matter and ammonia nitrogen are largely converted into inorganic matter
(C02, H20, N2) is removed from water, and sub-fraction is then converted into cellular material, is exhausted from system by regular spoil disposal.
Working principle:
Landfill leachate enters treating stations through grid gravity flow, initially enters oil separation grit chamber, realizes preliminary solid-liquid point herein
From, partial suspended thing is removed, gravity flow is discharged after separation and enters conditioning tank, the abundant reconciliation of progress water quality and water in conditioning tank
Enter subsequent treatment process afterwards.
The boosted pump of waste water in conditioning tank is promoted to primary sedimentation tank and carries out coagulating sedimentation, and precipitating water outlet enters anaerobic reation pool
Waste water is hydrolyzed with anoxic pond, larger molecular organics are converted to the tractable organic matter of small molecule, anoxic pond be discharged into
Row reprecipitation, precipitating water outlet enter biochemistry pool and are reprocessed, enter membrane biological reaction pond after biochemistry pool water outlet and carry out depth
It can qualified discharge after reason water outlet.
The sludge gravity flow generated during landfill leachate treatment enters sludge-tank, sludge periodically outward transport processing.Sludge-tank
Supernatant is back to conditioning tank.
The above is only the specific application examples of the utility model, do not constitute any limit to the protection scope of the utility model
System.Any technical scheme formed by adopting equivalent transformation or equivalent replacement, all fall within the utility model rights protection scope it
It is interior.
Claims (8)
1. a kind of garbage percolation liquid treating system, it is characterised in that: it includes pretreatment pool, deflector anaerobic pond (6), film reaction system
System, equipment room (11), chemicals dosing plant (12) and tune PH device (13)；The landfill leachate for squeezing station enters pre- place by elevator pump
Pond is managed, the pretreatment tank includes the grille well (1), oil separation grit chamber (2) and conditioning tank (3) set gradually, the conditioning tank
(3) waste water in flows into primary sedimentation tank (5) by sewage conduct (23), and the primary sedimentation tank (5) connect with deflector anaerobic pond (6), described
Chemicals dosing plant (12) is connect by drug feeding pipeline (25) with primary sedimentation tank (5) by metering pump, and the tune PH device (13) is by meter
Amount pump is connect by drug feeding pipeline (25) with primary sedimentation tank (5)；The deflector anaerobic pond (6) passes through sewage conduct (23) and film reaction
System connection, film reaction system include the anoxic pond (7) set gradually, sedimentation basin (8), biochemistry pool (9) and film reaction pond (10)；
Film reaction pond (10) side is equipped with equipment room (11)；The film reaction pond (10) passes through water supply pipe (22) and cleaning barrel
(18) it connects；The biochemistry pool (9) and film reaction pond (10) are connect by air pipeline (26) with two blowers (15).
2. garbage percolation liquid treating system according to claim 1, it is characterised in that: be equipped with height in the conditioning tank (3)
Ball-cock assembly (4) are equipped at liquid level and low liquid level, high liquid level and low liquid level.
3. garbage percolation liquid treating system according to claim 1, it is characterised in that: the deflector anaerobic pond (6) includes
Water inlet distribution system, reaction zone, outlet system, sludge drainage system, temperature compensation system and sample detection system.
4. garbage percolation liquid treating system according to claim 1, it is characterised in that: film reaction pond (10) bottom is logical
Sludge pipe (24) are crossed to connect by sludge pump and second liquid spinner flowmeter (21) with anoxic pond (7)；The anoxic pond (7)
Sludge pipe (24), which are equipped with, with the bottom of each reaction zone of deflector anaerobic pond (6) leads to conditioning tank (3).
5. garbage percolation liquid treating system according to claim 1, it is characterised in that: water supply pipe (22) connection
Lead to chemicals dosing plant (12), adjust PH device (13) and cleaning barrel (18), the cleaning barrel (18) is connected by water supply pipe (22)
Connect equipment room (11).
6. garbage percolation liquid treating system according to claim 1, it is characterised in that: be equipped with two in the equipment room (11)
A pump is connected to cleaning barrel (18) by water supply pipe (22) by motor-driven valve, is equipped between motor-driven valve and two pumps and is increased empty table
(20), described two pumps are connect by the first liquid rotor flowmeter (19) with outside network by water supply pipe (22).
7. garbage percolation liquid treating system according to claim 1, it is characterised in that: described two blowers (15) pass through gas
Packet (16) and two gas rotameters (17) connect with biochemistry pool (9) and film reaction pond (10).
8. garbage percolation liquid treating system according to claim 1, it is characterised in that: the chemicals dosing plant (12) and tune PH
Blender is equipped in device (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821075493.5U CN208632331U (en) | 2018-07-09 | 2018-07-09 | Garbage percolation liquid treating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821075493.5U CN208632331U (en) | 2018-07-09 | 2018-07-09 | Garbage percolation liquid treating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208632331U true CN208632331U (en) | 2019-03-22 |
Family
ID=65736396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821075493.5U Active CN208632331U (en) | 2018-07-09 | 2018-07-09 | Garbage percolation liquid treating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208632331U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675567A (en) * | 2018-07-09 | 2018-10-19 | 江苏晔辰环保科技有限公司 | Garbage percolation liquid treating system |
-
2018
- 2018-07-09 CN CN201821075493.5U patent/CN208632331U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675567A (en) * | 2018-07-09 | 2018-10-19 | 江苏晔辰环保科技有限公司 | Garbage percolation liquid treating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104230097B (en) | A kind of method of aquaculture sewage disposal | |
| CN100398470C (en) | Infiltration method for treating garbage | |
| CN102775025B (en) | Municipal life wastewater treatment system with high efficiency and low energy consumption | |
| CN101811797B (en) | Coal gasification waste water biochemical treatment equipment and method | |
| CN100371270C (en) | Combined treatment process for manioc producing effluent | |
| CN101967031B (en) | Garbage percolate treatment method | |
| KR20120113746A (en) | Wastewater pretreatment method and sewage treatment method using the pretreatment method | |
| CN103073149B (en) | Harmless processing method of night soil | |
| CN110092536A (en) | A kind of kitchen anaerobic digestion biogas slurry combined treatment process | |
| CN106977059A (en) | A kind of new and effective sewage disposal system and method | |
| CN108383320B (en) | Integrated treatment method for livestock and poultry breeding wastewater | |
| CN103183447A (en) | Treatment method of piggery wastewater | |
| CN107473513A (en) | A kind of bamboo product waste water Fenton processing unit and method | |
| CN103183446A (en) | Treatment device for piggery wastewater | |
| CN101781056B (en) | Treatment method of waste papermaking water | |
| CN100500596C (en) | Enzyme method for treating organic wastewater | |
| CN101781055B (en) | Treatment method of waste papermaking water | |
| CN107827324B (en) | Urban sewage comprehensive treatment system | |
| CN202945124U (en) | Urban sewage treatment system with high efficiency and low energy consumption | |
| CN208632331U (en) | Garbage percolation liquid treating system | |
| CN210620525U (en) | Water-fertilizer co-production device for breeding manure | |
| CN111348746A (en) | Miniature bionic type integrated sewage treatment equipment and sewage treatment method thereof | |
| CN208071544U (en) | A kind of railway communication system production wastewater treatment system | |
| CN108675567A (en) | Garbage percolation liquid treating system | |
| CN111252994A (en) | Domestic fungus wastewater treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |