CN206255954U - Heavy duty detergent domestic sewage processing system - Google Patents

Heavy duty detergent domestic sewage processing system Download PDF

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Publication number
CN206255954U
CN206255954U CN201621136234.XU CN201621136234U CN206255954U CN 206255954 U CN206255954 U CN 206255954U CN 201621136234 U CN201621136234 U CN 201621136234U CN 206255954 U CN206255954 U CN 206255954U
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China
Prior art keywords
pond
sludge
unit
processing system
domestic sewage
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CN201621136234.XU
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Chinese (zh)
Inventor
郭耀凯
陈颖欣
王森
韦丽梅
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Guangdong Green Tiger Environment Technology Co Ltd
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Guangdong Green Tiger Environment Technology Co Ltd
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Abstract

The utility model discloses a kind of heavy duty detergent domestic sewage processing system, includes pretreatment unit, A2O biological respinses unit, second pond, filter tank, UV sterilization pools and sludge dewatering unit;Wherein, A2O biological respinses unit includes anaerobic pond, anoxic pond and the Aerobic Pond being sequentially communicated;Oxygenation source of the gas is configured with for Aerobic Pond, aerator and agitating device are provided with Aerobic Pond;Aerobic Pond, second pond, filter tank, UV sterilization pools are sequentially connected;Anoxic pond is connected to anaerobic pond through the first reflux sludge tube, and Aerobic Pond is connected to anoxic pond through the second reflux sludge tube, and second pond is connected to sludge dewatering unit through sludge efferent duct, and sludge dewatering unit is connected to anaerobic pond through the 3rd reflux sludge tube.Thereby, it is combined with A2O biological respinses unit, second pond, filter tank, UV sterilization pools as advanced treating link, it is ensured that standard water discharge, and especially, it has the advantages that treatment effeciency high, high treating effect, stable and reliable operation, operating cost are relatively low.

Description

Heavy duty detergent domestic sewage processing system
Technical field
The utility model is related to sanitary sewage disposal technology, refers in particular to a kind of heavy duty detergent domestic sewage processing system.
Background technology
At present, the sanitary sewage of some city dweller's points is directly discharged into Ha Noi, to place city and the water quality in downstream city Water system causes pollution, and also some are that resident living sewage is entered by bioanalysis, activated sludge process or Artificial Wetland Techniques etc. Treatment is gone, content of organics is higher in usual sanitary sewage, and existing sanitary sewage disposal technology has many deficiencies, example Such as:Organics removal efficiency is low, sewage disposal needs to consume a large amount of electric energy, secondary pollution etc. is easily caused to underground water;Therefore, Applicant has studied intensively a kind of new domestic sewage processing system, and it is in treatment effeciency, treatment effect and operation The aspects such as cost are all had a clear superiority, and the sewage treatment plants for being widely used in each city are used, and are advantageously implemented city The strategic objective of sustainable development.
Utility model content
In view of this, in view of the existing deficiencies of the prior art, its main purpose is to provide a kind of heavy duty detergent to the utility model Domestic sewage processing system, it is combined with A2O biological respinses unit, second pond, filter tank, UV sterilization pools as advanced treating ring Section, it is ensured that standard water discharge, especially, it has treatment effeciency high, high treating effect, stable and reliable operation, operating cost relatively low The advantages of.
To achieve the above object, the utility model is using following technical scheme:
A kind of heavy duty detergent domestic sewage processing system, includes pretreatment unit, A2O biological respinses unit, second pond, filter Pond, UV sterilization pools and sludge dewatering unit;
Wherein, A2O biological respinses unit includes anaerobic pond, anoxic pond and the Aerobic Pond being sequentially communicated;For Aerobic Pond Oxygenation source of the gas is configured with, aerator and agitating device are provided with Aerobic Pond;Aerobic Pond, second pond, filter tank, UV sterilization pools according to Secondary connection;Anoxic pond is connected to anaerobic pond through the first reflux sludge tube, and Aerobic Pond is connected to anoxic pond through the second reflux sludge tube, Second pond is connected to sludge dewatering unit through sludge efferent duct, and sludge dewatering unit is connected to anaerobism through the 3rd reflux sludge tube Pond.
Used as a kind of preferred scheme, the pretreatment unit includes coarse rack, fine fack and the setting pot being sequentially connected.
Used as a kind of preferred scheme, the second pond goes out second pond for Zhou Jinzhou.
Used as a kind of preferred scheme, the filter tank is D types filter tank.
Used as a kind of preferred scheme, the UV sterilization pools are connected with the water outlet measuring tank for measuring water outlet.
Used as a kind of preferred scheme, the sludge dewatering unit includes sludge pumping plant and sludge dewatering computer room, foregoing two Heavy pond is connected to sludge pumping plant through sludge efferent duct, and foregoing 3rd reflux sludge tube is connected between sludge pumping plant and anaerobic pond, Sludge pumping plant is connected to sludge dewatering computer room through excess sludge pipe;The sludge dewatering computer room has dewatered sludge output end and pressure Filtrate output end, pressing filtering liquid output end connection is back to foregoing pretreatment unit.
Used as a kind of preferred scheme, the sludge dewatering computer room has filter press, and the sludge dewatering computer room is configured with storage Mud sump, flocculant concentration equipment and the clear water reserviors for rinsing filter press, foregoing sludge pumping plant are connected to storage through excess sludge pipe Mud sump, mud storage pool is connected to be connected between filter press, clear water reserviors and filter press through sewage sludge feed screw pump flushing pump.
The utility model has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technology Scheme understands that it is mainly in conjunction with by the use of A2O biological respinses unit, second pond, filter tank, UV sterilization pools as advanced treating ring Section, it is ensured that standard water discharge, effectively solves the problems, such as that city domestic sewage enters Ha Noi and water quality is polluted, to downstream city Water quality water system also plays protective effect, and especially, the domestic sewage processing system of the utility model patent has treatment effeciency The advantages of height, high treating effect, stable and reliable operation, relatively low operating cost, it is widely used at the sanitary sewage in each city Reason factory uses, and realizes the strategic objective of urban sustainable development.
More clearly to illustrate architectural feature of the present utility model and effect, come right with specific embodiment below in conjunction with the accompanying drawings The utility model is described in detail.
Brief description of the drawings
Fig. 1 is the general configuration schematic diagram of the embodiment of the utility model;
Fig. 2 is the process flow diagram of the embodiment of the utility model.
Accompanying drawing identifier declaration:
1st, coarse rack 2, inlet pumping station
3rd, fine fack 4, setting pot
5th, anaerobic pond 6, anoxic pond
7th, Aerobic Pond 8, air blast computer room
9th, second pond 10, sludge pumping plant
11st, sludge dewatering computer room 12, filter tank
13rd, UV sterilization pools 14, water outlet measuring tank
16th, flocculant concentration equipment
17th, mud storage pool 18, clear water reserviors
19th, belt thickener press filter 20, the first reflux sludge tube
21st, the second reflux sludge tube 22, the 3rd reflux sludge tube
23rd, the 4th reflux sludge tube 24, sludge efferent duct.
Specific embodiment
Refer to shown in Fig. 1 and Fig. 2, that show the concrete structure of the embodiment of the utility model;This kind of heavy duty detergent Domestic sewage processing system mainly includes pretreatment unit, A2O biological respinses unit, second pond 9, filter tank 12, UV sterilization pools 13 and sludge dewatering unit, the second pond 9 is preferably designed for Zhou Jinzhou and goes out second pond, and the filter tank 12 is preferably designed for D types Filter tank, the UV sterilization pools 13 are connected with the water outlet measuring tank 14 for measuring water outlet, and the sludge dewatering unit includes dirt Dredge pump station 10 and sludge dewatering computer room 11.
Sanitary sewage enters pretreatment unit by municipal wastewater pipe network, and the pretreatment unit includes the thick lattice being sequentially connected Grid 1, fine fack 3 and setting pot 4.
The coarse rack 1 is mainly used in big suspension, the floating object of retention, prevents follow-up equipment from blocking, protection equipment and pipe Road system;The retention grid slag of coarse rack 1 falls into conveying worm and is delivered to slag notch;Herein, stainless steel handcart, spiral are configured with Conveyer deslagging to in-car, by being manually transported to sludge dewatering computer room 11, with dehydration after excess sludge transport in the lump.Coarse rack 1 Front and rear to be all provided with gate, during so that a certain coarse rack 1 needing shut-down (breakdown) mainteance, closed shutter is blocking current.In view of easy to operate, Gate uses manual and electric double-purpose open-close type gate, i.e., it can manual and electric double-purpose.In operation control, conveying worm and coarse rack 1 It is dynamic.At timed intervals, according to the liquid level difference before and after coarse rack 1, automatically control grid rake and remove grid slag, grid slag is passed through into helical feed Machine is transported.The activated scarfing cinder circulation for being fixed number of times of coarse rack 1 one(Number of times can set on demand), circulated in last time Grid rake is parked in the wait of coarse rack top and instructs next time afterwards.Conveying worm still needs to one section of operation after last time is circulated Time(Such as 30 ~ 60 seconds).During conveying worm failure, coarse rack 1 is then out of service.Shut down the period such as coarse rack 1 is unexpected stifled Fill in, when water level is up to setting high water level before coarse rack 1, then start spotter, decontamination machine actuating device is powered off when torsion, overcurrent is crossed Alarm.
The fine fack 3 is mainly used in further removing larger particles suspension, floating object, protects follow-up equipment and pipeline system System;In the present embodiment, fine fack 3 uses step grate sewage remover, and it has the following advantages that:1. compact conformation, electrical control letter It is single, easy to automate;2. corrosion resisting property is good, saving energy, noise are small;3. decontamination action is continuous, deslagging is clean, separative efficiency It is high.Fine fack 3 retains grid slag and is conveyed by helical conveying squeezer, using Shaftless screw conveyor pattern, mainly by shaftless screw, U-type groove, liner plate, cover plate, feed inlet and outlet and drive device composition, it has the following advantages that:1. it is shaftless in simple structure, hopper Hold, material conveying is smooth, safeguard simple;2. in addition to feed inlet and outlet is opened wide, remainder can add a cover closing, and material will not be outward Overflow, reduce air pollution.
The setting pot 4 is mainly used in removing density big suspension, floating object, protects follow-up equipment and pipe-line system;This Rotational flow grit chamber is used in embodiment, sand setting amount is designed by 30m3 sand/106m3 sewage, moisture content 60%, unit weight 1.5, sand hopper holds Product is less than sand setting amount on the 2nd;Mechanical sediment outflow mode is that stirring vane, attached air compressor machine, gas tank and control system are set in setting pot System;After sand water is further separated, sand setting and sewage treatment plant other solid waste are disposed in the lump, the sewage isolated return into Pump house 2 is processed again.Rotational flow grit chamber is typically made up of impeller, decelerator, power transmission shaft, motor, sand-removing system etc., its work It is as principle:Impeller leaf slurry is inclined upwardly, and sewage is for the helical movement during pond is made during rotation, while sewage tangentially enters producing and leaf The consistent eddy flow of wheel rotation direction, therefore sewage forms vortex fluidised form in pond.Under the conditions of appropriate leaf slurry inclination angle and linear velocity, in sewage Sand grains is washed away and is kept preferably effect of settling, and is attached to the organic matter on sand grains and the small material of density with sewage together Outflow setting pot.Further, since impeller rotates, reduce because inflow change causes the sensitivity of change of flow state, therefore protect Setting pot effect stability, the organic component that shakes out are demonstrate,proved low.Every group of setting pot is equipped with setting pot auxiliary device(Including impeller, subtract Fast device, driver, motor, Sand pump etc.).The sand water mixed liquid of setting pot discharge can on demand carry out girt-water separation, for example, matching somebody with somebody Put a set of grit water separator(It is herein spiral grit-water separator).Spiral grit-water separator operation principle is:Sand water mixes From separator one end top input water tank, the larger such as sand grains of severe is deposited on flute profile bottom to liquid in mixed liquor, in pushing away for spiral Under dynamic, sand grains is lifted along tilting U-type groove bottom, continues to elapse a segment distance after leaving liquid level, through row after sand grains is fully dehydrated Sand mouth is unloaded to Sheng sand bucket or go-cart;And sewage conduct is then discharged into by overfall with the sewage after sand separation.The grit water separator Have the following advantages that:1. separative efficiency is high, may separate out particle of the particle diameter more than 0.2mm;2. shaftless screw, anhydrous axis are used Hold, it is easy to maintenance;3. compact conformation, lightweight, easy for installation.
Foregoing A2O biological respinses unit, second pond 9, filter tank 10, UV sterilization pools 12 are used as advanced treating link;Its for The impact load of SS higher, TP, CODcr can bear completely, can be by adding PAC in filter tank water inlet end, it is ensured that SS, TP reach Mark;Can be improved the measures such as sludge concentration and sludge loading and ensure using reflux ratio is increased for the CODcr higher than 50mg/l Water is up to standard;It has the advantages that treatment effeciency high, high treating effect, stable and reliable operation, is suitable to city domestic sewage treatment plant Using;Specifically:
The A2O biological respinse units are also referred to as " improvement A2O oxidation ditches ", and the A2O biological respinse units are included and connected successively Logical anaerobic pond 5, anoxic pond 6 and Aerobic Pond 7;Oxygenation source of the gas is configured with for Aerobic Pond 7, in the present embodiment, air blast is configured with Some Roots blowers are provided with computer room 8, air blast computer room 8, according to the feedback of biological tank dissolved oxygen concentration, by automatic program control Unit start-stop processed and regulation air quantity, the air output of air blower can be adjusted by adjusting inlet guide vane angle, for example its Adjustable range 100 ~ 45%.Aerator and agitating device are provided with Aerobic Pond 7, by changing aeration intensity and stirring Degree, can form anoxic zone and aerobic zone in Aerobic Pond 7;For ease of safeguarding and changing, aerator uses disk in Aerobic Pond 7 Micro-porous aerator;Continuum micromeehanics, continuous aeration in pond, its aeration rate can be by the DO instrument in pond(Dissolved oxygen instrument)Feedback control Make the Roots blower in foregoing air blast computer room.Designed by improveing A2O oxidation ditches, in the case where enough Oxygen Conditions are provided, while Anaerobism, anoxic, aerobic environment are built in A2O biological respinse units, using prolific activity in A2O biological respinse units Sludge, water pollutant of degrading, to reach the purpose for purifying water;In the present embodiment, compared to traditional active sludge processing method For, its effect for largely enhancing dephosphorization denitrogenation, aeration can reduce the consumption of the energy, sewage disposal system fortune Row more energy-conservation;Aerobic Pond 7, second pond 9, filter tank 12, UV sterilization pools 13 are sequentially connected;Anoxic pond 6 is through the first reflux sludge tube 20 are connected to anaerobic pond 5, and Aerobic Pond 7 is connected to anoxic pond 6 through the second reflux sludge tube 21.
The Zhou Jinzhou goes out second pond and is mainly used in mixed liquor separation of solid and liquid, it is ensured that water outlet SS and BOD5 reach after sewage disposal It is the indispensable part of biochemical treatment to required discharge standard.The Zhou Jinzhou goes out the capacity utilization of second pond Height, can use waterpower surface loading higher, therefore it has the advantages such as floor space is small, anti-shock loading is strong, simultaneously because Pond girth, the cross-section of river is big, and water inlet flow velocity is small, effectively promotes fluidised form in pond and develops to laminar flow, produces concurrent, promotes to live Property sludge sink, and, because the adsorption clarification of activated sludge layer is acted on, mud granule in mixed liquor constantly with superposed layer in Activated sludge collision, absorption, with reference to, flocculation, produce good clarification, improve sedimentation effect.In the present embodiment, should Zhou Jinzhou goes out second pond through the 4th reflux sludge tube 23 by activity sludge reflux to Aerobic Pond 7, according to the sludge concentration control of Aerobic Pond 7 Capacity of returns processed;3rd reflux sludge tube 22 is connected between sludge pumping plant 10 and anaerobic pond 5, and sludge pumping plant 10 is through excess sludge pipe It is connected to sludge dewatering computer room 11;Zhou Jinzhou goes out row's excess sludge in second pond, and, using center driving scraping and sucking machine, Zhou Jinzhou goes out Excess sludge is promoted to second pond the sludge pumping plant 10 of sludge dewatering unit through sludge efferent duct, and sludge pumping plant 10 takes off with sludge The coordinated operation of water dispenser room 11, the excess sludge that sludge dewatering computer room 11 will be produced in sewage disposal process is concentrated, is dehydrated, drop Low-water-content, is easy to sludge to transport and final disposal.In the present embodiment, sewage sludge feed screw rod is provided with sludge dewatering computer room 11 Pump, belt thickener press filter 19, flocculant concentration equipment 16, flushing pump etc.;Can match somebody with somebody in sludge dewatering computer room 11 and be arranged with storage Mud sump 17 and clear water reserviors 18, excess sludge provide power through residual sludge pump, are delivered in mud storage pool 17 by excess sludge pipe, store mud Power is provided through the sludge after flocculation by sewage sludge feed screw pump to enter in belt thickener press filter 19, sludge is carried out in pond 17 Dewater treatment, flocculation link is conducive to improving dehydration rate, Treatment of Sludge etc. can be outward transported to through the sludge after dehydration and be located Reason(Such as anhydration and incineration or landfill application etc.);Pressing filtering liquid can be recycled to foregoing improvement A2O oxidation ditches through pipeline, herein, definition The sludge dewatering computer room has dewatered sludge output end and pressing filtering liquid output end, and the connection of pressing filtering liquid output end is back to foregoing pre- Processing unit(Referred to herein as being back to inlet pumping station 2).The flushing pump is connected to clear water reserviors 18, for belt thickener press filter 19 are rinsed, and automatic gap type is carried out its flushing operation on demand;Clear water reserviors 18 can be by the final process of sewage disposal system Water side is supplied water afterwards, and the sewage produced after being rinsed to belt thickener press filter 19 is recycled to foregoing improvement A2O oxidation ditches.
The D types filter tank is mainly used in further removal and goes out second pond processing links in Zhou Jinzhou and be difficult to reach specified clearance SS, to optimize effluent quality.Filtrate in the D types filter tank selects cobblestone, the preferred Φ 16- Φ 32 in its material footpath.The D types filter tank Backwash pump house is configured with, it is used to clean filtrate use, and backwash pump house is according to the ruuning situation intermittent duty of D types filter tank, and this is anti- Rinse and backwash pump, backwash roots blower are provided with pump house, the processes, this implementation such as air purge, washing are carried out with to filtrate In example, divide 3 stages to filter back washing, i.e.,:Independent air purge, air water are backwashed simultaneously, clear water rinsing.
The UV sterilization pools 13 are mainly used in killing bacterium, bacterial regrowth is reached discharging standards.
The water outlet measuring tank 14 uses Pasteur's measuring tank, and it is used for water outlet metering.
And, between the domestic sewage processing system is also configured with dephosphorization dosing, it is mainly used in arranging chemical Dephosphorization reagent Throwing device, for example:Molten medicine dispensing kit, measuring pump etc..
Next, the sanitary sewage disposal process that the present embodiment is briefly described is as follows:
After municipal sewage is through 1 section of dirty removal of coarse rack larger suspension, floating object, it is lifted into carefully through inlet pumping station 2 Grid 3 and setting pot 4, to remove smaller floating object and sand grains;The water outlet gravity flow of setting pot 4 enters improvement A2O oxidation ditches, Complete biological carbon and phosphorous removal effect;The water outlet for improveing A2O oxidation ditches will carry out mud-water separation by second pond 9, going out after treatment After water carries out advanced treating through filter tank 12, its water outlet can just be discharged after being disinfected by UV sterilization pools 13 again by metering;And two Excess sludge enters sludge pumping plant 10 in heavy pond 9, and the supernatant of sludge pumping plant 10 is back to improvement through the 3rd reflux sludge tube 22 A2O oxidation ditches, sludge delivers to sludge dewatering computer room 11 and carries out dewater treatment in sludge pumping plant 10, is discharged through sludge dewatering computer room 11 Pressing filtering liquid be recycled to improvement A2O oxidation ditches, through sludge dewatering computer room 11 discharge dewatered sludge(Or mud cake)Outside by automobile Fortune treatment.
Design focal point of the present utility model is, its mainly in conjunction with using A2O biological respinses unit, second pond, filter tank, UV sterilization pools are used as advanced treating link, it is ensured that standard water discharge, and effectively solution city domestic sewage enters Ha Noi and water quality is caused The problem of pollution, the water quality water system to downstream city also plays protective effect, and especially, the life of the utility model patent is dirty Water treatment system has the advantages that treatment effeciency high, high treating effect, stable and reliable operation, operating cost are relatively low, generally applicable Sewage treatment plants in each city are used, and realize the strategic objective of urban sustainable development.
The above, is only preferred embodiment of the present utility model, and not technical scope of the present utility model is made Any limitation, therefore every any trickle amendment, equivalent change made to above example according to technical spirit of the present utility model Change and modify, still fall within the range of technical solutions of the utility model.

Claims (7)

1. a kind of heavy duty detergent domestic sewage processing system, it is characterised in that:Include pretreatment unit, A2O biological respinses unit, Second pond, filter tank, UV sterilization pools and sludge dewatering unit;
Wherein, A2O biological respinses unit includes anaerobic pond, anoxic pond and the Aerobic Pond being sequentially communicated;For Aerobic Pond configuration There is oxygenation source of the gas, aerator and agitating device are provided with Aerobic Pond;Aerobic Pond, second pond, filter tank, UV sterilization pools connect successively Connect;Anoxic pond is connected to anaerobic pond through the first reflux sludge tube, and Aerobic Pond is connected to anoxic pond through the second reflux sludge tube, and two sink Pond is connected to sludge dewatering unit through sludge efferent duct, and sludge dewatering unit is connected to anaerobic pond through the 3rd reflux sludge tube.
2. heavy duty detergent domestic sewage processing system according to claim 1, it is characterised in that:The pretreatment unit includes There are coarse rack, fine fack and the setting pot being sequentially connected.
3. heavy duty detergent domestic sewage processing system according to claim 1, it is characterised in that:The second pond is Zhou Jinzhou Go out second pond.
4. heavy duty detergent domestic sewage processing system according to claim 1, it is characterised in that:The filter tank is D types filter tank.
5. heavy duty detergent domestic sewage processing system according to claim 1, it is characterised in that:The UV sterilization pools are connected with Water outlet measuring tank for measuring water outlet.
6. heavy duty detergent domestic sewage processing system according to claim 1, it is characterised in that:The sludge dewatering unit bag Sludge pumping plant and sludge dewatering computer room are included, foregoing second pond is connected to sludge pumping plant, foregoing 3rd backflow through sludge efferent duct Sludge pipe is connected between sludge pumping plant and anaerobic pond, and sludge pumping plant is connected to sludge dewatering computer room through excess sludge pipe;It is described Sludge dewatering computer room has dewatered sludge output end and pressing filtering liquid output end, and the connection of pressing filtering liquid output end is back to foregoing pretreatment Unit.
7. heavy duty detergent domestic sewage processing system according to claim 6, it is characterised in that:The sludge dewatering computer room tool There is filter press, the sludge dewatering computer room is configured with mud storage pool, flocculant concentration equipment and the clear water reserviors for rinsing filter press, Foregoing sludge pumping plant is connected to mud storage pool through excess sludge pipe, and mud storage pool is connected in filter press, clear water through sewage sludge feed screw pump Being connected between pond and filter press has flushing pump.
CN201621136234.XU 2016-10-19 2016-10-19 Heavy duty detergent domestic sewage processing system Active CN206255954U (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107162343A (en) * 2017-06-29 2017-09-15 苏州科博思设备工程有限公司 A kind of sewage disposal system
CN108439722A (en) * 2018-05-14 2018-08-24 马鞍山市润启新材料科技有限公司 A kind of sewage-treatment plant
CN108840541A (en) * 2018-06-23 2018-11-20 安徽拓谷物联科技有限公司 Bio protease is reduced the treatment process reacted with bed mud
CN113144698A (en) * 2021-04-20 2021-07-23 中建环能科技股份有限公司 Efficient pretreatment system and process for removing sand slag together

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107162343A (en) * 2017-06-29 2017-09-15 苏州科博思设备工程有限公司 A kind of sewage disposal system
CN108439722A (en) * 2018-05-14 2018-08-24 马鞍山市润启新材料科技有限公司 A kind of sewage-treatment plant
CN108840541A (en) * 2018-06-23 2018-11-20 安徽拓谷物联科技有限公司 Bio protease is reduced the treatment process reacted with bed mud
CN113144698A (en) * 2021-04-20 2021-07-23 中建环能科技股份有限公司 Efficient pretreatment system and process for removing sand slag together

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