CN207749017U - Pretreatment system suitable for low coloration micro-polluted source water - Google Patents
Pretreatment system suitable for low coloration micro-polluted source water Download PDFInfo
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- CN207749017U CN207749017U CN201721880027.XU CN201721880027U CN207749017U CN 207749017 U CN207749017 U CN 207749017U CN 201721880027 U CN201721880027 U CN 201721880027U CN 207749017 U CN207749017 U CN 207749017U
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- ozone
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 140
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 81
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 71
- 230000003647 oxidation Effects 0.000 claims abstract description 39
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 39
- 239000000945 filler Substances 0.000 claims abstract description 9
- 238000009792 diffusion process Methods 0.000 claims description 30
- 238000005273 aeration Methods 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 description 10
- 231100000719 pollutant Toxicity 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 239000005416 organic matter Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 230000036284 oxygen consumption Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- LBSANEJBGMCTBH-UHFFFAOYSA-N manganate Chemical compound [O-][Mn]([O-])(=O)=O LBSANEJBGMCTBH-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012629 purifying agent Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The utility model discloses a kind of Water pretreatrnent system suitable for low coloration micro-polluted source water, which includes：The front end in ozone pre-oxidation pond connects raw water tubes；The porous disperser of ozone, the dosing system connection integrated with the ozone outside ozone pre-oxidation pond of the porous disperser of the ozone are set in ozone pre-oxidation pond；Ozone pre-oxidation pond rear end outlet pipe is sequentially connected with granular activated carbon mixing pit and sump；Ozone pre-oxidation pond rear end outlet pipe is connect through surmounting pipe with sump water inlet pipe；Bottom sets air-diffuser in granular activated carbon mixing pit；Immersible pump, the outlet pipe connection of immersible pump and sump are set in sump；Control device, respectively dosing system electrical connection integrated with the porous disperser of ozone, air-diffuser, immersible pump and ozone, can each device of Collaborative Control.Since filler is in fluidized state in each reaction tank, the easy blockage problem of activated carbon filter is effectively solved, need not be backwashed, saved energy consumption, and takes up an area few, high treating effect.
Description
Technical Field
The utility model relates to a feedwater treatment field especially relates to a pretreatment systems suitable for low colourity micro-polluted source water.
Background
With the development of industry, the intensity and the breadth of water source pollution present a superimposed effect, further aggravating the contradiction between the water resource shortage and the water supply demand. The problems of water eutrophication and trace organic pollutants in water become more prominent, and the quality of water is difficult to ensure by the conventional water purification process, namely, the flocculation-precipitation-sand filtration-disinfection treatment method.
When the pollutants contained in water are of various types, complex properties and low in concentration, the water is generally called micro-polluted water, and the water is characterized in that the content of the pollutants in the water is very low compared with that of the general sewage, and the main pollutants comprise organic matters, ammonia nitrogen, iron, manganese, heavy metals and the like. The pretreatment of the micro-polluted source water generally means that before a conventional treatment process, a proper physical, chemical and biological treatment method is adopted to primarily remove pollutants in water, and meanwhile, the conventional treatment can better play a role, the burden of the conventional treatment is reduced, and the quality of drinking water is improved. Meanwhile, the pretreatment also provides conditions for advanced treatment of drinking water. The prior pretreatment technologies for micro-polluted source water comprise the following steps: aeration, adsorption, chemical and biological methods, and the like. Wherein the biological pretreatment is to remove pollutants such as ammonia nitrogen, organic matters and the like in water by means of metabolic activity of microbial communities. Due to the limitation of low nutrient condition, the biological pretreatment method of the micro-polluted source water is mainly a biofilm method, and mainly comprises the following steps: biological contact oxidation pond, biological filter, biological rotating disk, biological fluidized bed, etc.
Although the biological pretreatment process is an effective method for removing ammonia nitrogen and organic matters in micro-polluted water, the effective removal of the pollutants by the biological pretreatment needs to be established on the basis of longer hydraulic retention time, which undoubtedly increases the capital construction and operation cost, the removal effect is greatly influenced by the change of the external environment, and most of persistent organic pollutants in raw water have the characteristic of difficult biodegradation, so that the biological pretreatment for removing the organic matters and the chromaticity in the raw water has certain limitations.
SUMMERY OF THE UTILITY MODEL
Based on the problems existing in the prior art, the utility model aims to provide a pretreatment system suitable for low-chroma micro-polluted source water, which can solve the problems of filter clogging, low organic matter removal rate and high operation cost in the ozone-biological activated carbon pretreatment technology.
The utility model aims at realizing through the following technical scheme:
the utility model discloses embodiment provides a pretreatment systems suitable for low colourity micro-polluted source water, include:
the system comprises a raw water pipe, an ozone pre-oxidation tank, an ozone porous diffusion device, a granular activated carbon mixing tank, an air diffusion device, a water collecting well, a submersible pump, an overrun pipe, an ozone integrated feeding system and a control device; wherein,
the front end of the ozone pre-oxidation tank is connected with the raw water pipe;
an ozone porous diffusion device is arranged in the ozone pre-oxidation tank and is connected with an ozone integrated feeding system outside the ozone pre-oxidation tank;
the rear-end water outlet pipe of the ozone pre-oxidation tank is sequentially connected with the granular activated carbon mixing tank and the water collection well;
the water outlet pipe at the rear end of the ozone pre-oxidation pond is connected with the water inlet pipe of the water collecting well through an overrunning pipe;
an air diffusion device is arranged at the bottom in the granular activated carbon mixing tank;
a submersible pump is arranged in the water collecting well and is connected with a water outlet pipe of the water collecting well;
the control device is respectively electrically connected with the ozone multi-air diffusion device, the submersible pump and the ozone integrated dosing system, and can cooperatively control each device.
By the foregoing the utility model provides a technical scheme can see out, the embodiment of the utility model provides a be applicable to the pretreatment systems of low colourity micro-polluted source water, its beneficial effect is:
through setting up the how empty diffusion plant of ozone in ozone pre-oxidation pond, set up air diffusion plant in granule active carbon mixing tank, fill in each pond through the effect of how empty diffusion plant of ozone and air diffusion plant and handle fluidized state, can solve during ozone-biological activated carbon preliminary treatment filter jam, the organic matter clearance is low, the running cost is high problem.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a pretreatment system for low-chroma micro-polluted source water according to an embodiment of the present invention;
in the figure, 1, a raw water pipe, 2, an ozone pre-oxidation tank, 3, an ozone porous diffusion device, 4, a first electric valve, 5, a granular activated carbon mixing tank, 6, an air diffusion device, 7, granular activated carbon filler, 8, a water collecting well, 9, a submersible pump, 10, a long-distance water pipeline reactor, 11, a second electric valve, 12, an overrunning pipe and 13, an ozone integrated feeding system.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a pretreatment system for low-chroma micro-polluted source water, including:
the system comprises a raw water pipe, an ozone pre-oxidation tank, an ozone multi-air diffusion device, a granular activated carbon mixing tank, an air diffusion device, a water collecting well, a submersible pump, an overrun pipe, an ozone integrated feeding system and a control device; wherein,
the front end of the ozone pre-oxidation tank is connected with the raw water pipe;
an ozone multi-cavity diffusion device is arranged in the ozone pre-oxidation tank and is connected with an ozone integrated feeding system outside the ozone pre-oxidation tank;
the rear-end water outlet pipe of the ozone pre-oxidation tank is sequentially connected with the granular activated carbon mixing tank and the water collection well;
the water outlet pipe at the rear end of the ozone pre-oxidation pond is connected with the water inlet pipe of the water collecting well through an overrunning pipe;
an air diffusion device is arranged at the bottom in the granular activated carbon mixing tank;
a submersible pump is arranged in the water collecting well and is connected with a water outlet pipe of the water collecting well;
the control device is respectively electrically connected with the ozone porous diffusion device, the air diffusion device, the submersible pump and the ozone integrated dosing system, and can cooperatively control each device.
In the pretreatment system, the ozone porous diffusion device is provided with a plurality of pure titanium metal aeration heads.
In the pretreatment system, a granular activated carbon filler is arranged in a granular activated carbon mixing tank;
the water inlet pipe of the granular activated carbon mixing tank is provided with a first electric valve, and the first electric valve is electrically connected with the control device.
And a second electric valve is arranged on the overrunning pipe in the pretreatment system and is electrically connected with the control device.
The water outlet pipe of the water collecting well in the pretreatment system is connected with a long-distance water pipeline reactor.
The ozone porous diffusion device in the pretreatment system is arranged at the bottom in the ozone preoxidation tank.
The pretreatment system of the utility model can solve the problems of filter chamber blockage, low organic matter removal rate and high operation cost in the ozone-biological activated carbon pretreatment by respectively arranging the ozone porous diffusion device in the ozone preoxidation tank and the air diffusion device in the granular activated carbon mixing tank; the long-distance water pipeline reactor is connected to the water outlet pipe of the water collecting well, so that the hydraulic retention time is increased at low cost, and the problems that the effective removal of pollutants in the raw water of the current biological pretreatment needs to be established on the basis of long hydraulic retention time and the capital construction and operation cost is increased are solved.
The utility model discloses a pretreatment systems is carrying out the step as follows of preliminary treatment to low colourity micro-polluted source water:
(1) raw water from a water source automatically flows into an ozone pre-oxidation tank, a pure titanium metal aeration head is paved in the bottom of the tank, the tank body is divided into a front section and a rear section, and the tank volume ratio of the 2 sections is 3: 2; adding ozone at a concentration of 1-3 mg/L, and staying for 10-15 min; macromolecular organic matters in water are decomposed into micromolecular organic matters through the strong oxidation effect of ozone.
(2) The effluent of the ozone pre-oxidation tank automatically flows into the granular activated carbon mixing tank from bottom to top at a certain flow rate. The granular activated carbon mixing tank adopts granular activated carbon filler with the grain diameter of 1.3-4.7 mm, the relative density of 1.500 and the filler height of 0.7m, a perforated aeration pipe is laid at the bottom of the mixing tank, and compressed air provides a power source for filler fluidization through the aeration pipe.
In the granular activated carbon mixing pool, the filler is in a fluidized state and is fully contacted with the micro-polluted source water, and the specific surface area of the granular activated carbon is large (per m)3The surface area of the filler can reach 2000-3000 square meters), and the characteristics of strong adsorbability can remove trace organic matters, ammonia nitrogen and ozone tail gas in water.
(3) The effluent of the granular activated carbon mixing tank flows to the adjusting mixing tank by gravity, a submersible pump is arranged in a water collecting well of the mixing tank, and the submersible pump is connected with the long-distance water pipeline reactor. When the turbidity and the chromaticity of raw water entering the adjusting and mixing tank are obviously increased or the content of iron and manganese is obviously increased, potassium permanganate is added into the adjusting and mixing tank, pollutants are removed through oxidation of permanganate in a long-distance water conveying pipeline, coagulation aid and turbidity removal effects are exerted in a coagulating sedimentation stage, and turbidity and odor are removed at the same time. The flow speed of water in the pipeline of the long-distance water pipeline reactor is 1m/s, and the retention time is 6-10 hours.
The utility model discloses a pretreatment systems is when carrying out the preliminary treatment to low colourity micro-polluted source water, low colourity micro-polluted source water flows into ozone pre-oxidation pond automatically, after ozone oxidation, aquatic macromolecule organic matter decomposes into the micromolecule organic matter, improve the colourity of aquatic organic matter biodegradability and reduction water, it flows into granule active carbon mixed pool from making progress automatically to go out water with certain velocity of flow from down, adsorption through active carbon, aquatic trace organic matter, ammonia nitrogen and ozone tail gas can get rid of, send into long distance water pipeline reactor after manganate adds the salt medicament in sending into the regulation pond through the raw water after the preliminary treatment, utilize the water delivery in-process to dwell longer time in the pipeline and send into the water factory after carrying out the decontamination reaction, and further exert the effect of getting rid of colourity in the coagulating sedimentation stage.
Specifically, the utility model discloses a pretreatment systems carries out the step as follows of preliminary treatment to low colourity micro-polluted source water:
(1) raw water of a water source firstly enters an ozone pre-oxidation tank 2 through a raw water pipe 1 to be subjected to an ozone pretreatment stage, an ozone porous diffusion device 3 is arranged at the bottom of the ozone pre-oxidation tank 2, a pure titanium metal aeration head is adopted, and ozone is added through an ozone integrated adding system 13. The tank body is divided into a front section and a rear section, wherein the tank volume ratio of the 2 sections is 3: 2; adding ozone at a concentration of 1-3 mg/L, and staying for 10-15 min; macromolecular organic matters in water are decomposed into micromolecular organic matters through the strong oxidation effect of ozone.
(2) The effluent of the ozone pre-oxidation tank 2 containing the small molecular organic matters enters a granular activated carbon mixing tank 5 through a pipeline, and meanwhile, an overrunning pipe 12 is arranged and can directly enter a water collecting well 8 according to the situation. When the oxygen consumption concentration of the raw water is continuously lower than 3mg/L and is odorless and tasteless, the first electric valve 4 can be closed, the second electric valve 11 is opened, so that the water discharged from the ozone pre-oxidation pond 2 directly enters the water collecting well 8 through the surpassing pipe 12, and then is lifted by the submersible pump 9 to enter the long-distance water pipe reactor 10 to be sent to a water plant. When the oxygen consumption concentration of raw water is more than 3mg/L, or chromaticity, stink are obvious, can open first electric valve 4 this moment, close second electric valve 11, make 2 play water of ozone pre-oxidation pond get into granule active carbon mixing tank 5, utilize the adsorption of granule active carbon to get rid of partial organic pollutant.
(3) The effluent of the granular activated carbon mixing tank 5 enters a water collecting well 8 through a pipeline, and if sensory character indexes such as chromaticity, odor and the like in the incoming water exceed standards, a permanganate water purifying agent can be added into the tank, and then the effluent is lifted by a submersible pump 9 to enter a long-distance water pipeline reactor 10. The water collecting well 8 is only used as a mixed mass transfer reactor, the water retention time is 5-8 minutes, the added medicament is simply mixed and contacted with water in the pool, and the retention time required by reaction is not provided, so that the water can be treated in a large scale, the construction cost is saved, and the reaction of the medicament and pollutants occurs in the long-distance water pipeline reactor 10.
Compared with the prior art, the utility model, have following advantage: because the filling materials in each reaction tank are in a fluidized state, the problem that the activated carbon filter tank is easy to block is effectively solved, back washing is not needed, the energy consumption is saved, the occupied area is small, and the treatment effect is good; meanwhile, the system is combined with an adjusting mixing pool (namely a water collecting well) to reduce the chromaticity and turbidity of raw water, remove iron and manganese and the like, and reduce the operation cost of a water plant through strengthening pretreatment; the reinforced pretreatment system for micro-polluted raw water is constructed by utilizing the pretreatment facility arranged in the water source plant and the long-distance water conveying pipeline between the water source plant and the water supply plant, so that pollutants in the raw water are effectively degraded, the raw water can be treated in the pipeline in the conveying process of the long-distance water conveying pipeline, the operation cost is reduced, and the stability of discharged water is ensured.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A pretreatment system for low color, micro-contaminated source water, comprising:
the system comprises a raw water pipe, an ozone pre-oxidation tank, an ozone porous diffusion device, a granular activated carbon mixing tank, an air diffusion device, a water collecting well, a submersible pump, an overrun pipe, an ozone integrated feeding system and a control device; wherein,
the front end of the ozone pre-oxidation tank is connected with the raw water pipe;
an ozone porous diffusion device is arranged in the ozone pre-oxidation tank and is connected with an ozone integrated feeding system outside the ozone pre-oxidation tank;
the rear-end water outlet pipe of the ozone pre-oxidation tank is sequentially connected with the granular activated carbon mixing tank and the water collection well;
the water outlet pipe at the rear end of the ozone pre-oxidation pond is connected with the water inlet pipe of the water collecting well through an overrunning pipe;
an air diffusion device is arranged at the bottom in the granular activated carbon mixing tank;
a submersible pump is arranged in the water collecting well and is connected with a water outlet pipe of the water collecting well;
the control device is respectively electrically connected with the ozone porous diffusion device, the air diffusion device, the submersible pump and the ozone integrated dosing system, and can cooperatively control each device.
2. The pretreatment system for low-color micro-polluted source water according to claim 1, wherein the ozone porous diffusion device is provided with a plurality of pure titanium metal aeration heads.
3. The pretreatment system for low-chroma micro-polluted source water according to claim 1, wherein the ozone pre-oxidation tank is divided into a front section and a rear section in the tank body, and the tank volume ratio of the two sections is 3: 2; the adding concentration of the ozone is 1-3 mg/L, and the retention time is 10-15 min.
4. The pretreatment system for low-color slightly polluted source water according to any one of claims 1 to 3, wherein a granular activated carbon filler is arranged in the granular activated carbon mixing tank;
the water inlet pipe of the granular activated carbon mixing tank is provided with a first electric valve, and the first electric valve is electrically connected with the control device.
5. The pretreatment system for low color, micro-polluted source water according to any one of claims 1 to 3, wherein a second electrically operated valve is provided on said override tube, said second electrically operated valve being electrically connected to said control means.
6. The pretreatment system for low-color slightly polluted source water according to any one of claims 1 to 3, wherein a long-distance water pipeline reactor is connected to a water outlet pipe of the water collecting well.
7. The pretreatment system for low-color slightly polluted source water as claimed in any one of claims 1 to 3, wherein said ozone porous diffusion means is provided at the bottom of said ozone preoxidation tank.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113024033A (en) * | 2021-03-15 | 2021-06-25 | 云南省设计院集团工程投资有限公司 | Process for deeply treating sewage discharge of livestock and poultry breeding industry |
| CN115353256A (en) * | 2022-08-22 | 2022-11-18 | 山东华城工程技术有限公司 | Water purification treatment process for micro-polluted surface water source water |
-
2017
- 2017-12-28 CN CN201721880027.XU patent/CN207749017U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113024033A (en) * | 2021-03-15 | 2021-06-25 | 云南省设计院集团工程投资有限公司 | Process for deeply treating sewage discharge of livestock and poultry breeding industry |
| CN115353256A (en) * | 2022-08-22 | 2022-11-18 | 山东华城工程技术有限公司 | Water purification treatment process for micro-polluted surface water source water |
| CN115353256B (en) * | 2022-08-22 | 2024-04-16 | 山东华城工程技术有限公司 | Water purification treatment process for micro-polluted surface water source water |
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