CN113666469A - Sand-adding efficient sedimentation tank water treatment process and treatment reagent thereof - Google Patents
Sand-adding efficient sedimentation tank water treatment process and treatment reagent thereof Download PDFInfo
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- CN113666469A CN113666469A CN202111064667.4A CN202111064667A CN113666469A CN 113666469 A CN113666469 A CN 113666469A CN 202111064667 A CN202111064667 A CN 202111064667A CN 113666469 A CN113666469 A CN 113666469A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000004062 sedimentation Methods 0.000 title claims abstract description 45
- 230000008569 process Effects 0.000 title claims abstract description 41
- 239000003153 chemical reaction reagent Substances 0.000 title abstract description 20
- 239000010865 sewage Substances 0.000 claims abstract description 69
- 238000002156 mixing Methods 0.000 claims abstract description 52
- 238000005189 flocculation Methods 0.000 claims abstract description 45
- 230000016615 flocculation Effects 0.000 claims abstract description 45
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000000701 coagulant Substances 0.000 claims abstract description 37
- 239000004576 sand Substances 0.000 claims abstract description 29
- 241000219991 Lythraceae Species 0.000 claims abstract description 23
- 235000014360 Punica granatum Nutrition 0.000 claims abstract description 23
- 239000008394 flocculating agent Substances 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 239000010802 sludge Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 12
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 36
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 24
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 22
- 229920002635 polyurethane Polymers 0.000 claims description 20
- 239000004814 polyurethane Substances 0.000 claims description 20
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 16
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 14
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 13
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 13
- 239000003365 glass fiber Substances 0.000 claims description 13
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 13
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 10
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 9
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 9
- 125000000129 anionic group Chemical group 0.000 claims description 9
- FNAQSUUGMSOBHW-UHFFFAOYSA-H calcium citrate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O FNAQSUUGMSOBHW-UHFFFAOYSA-H 0.000 claims description 9
- 239000001354 calcium citrate Substances 0.000 claims description 9
- 239000004571 lime Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- 235000013337 tricalcium citrate Nutrition 0.000 claims description 9
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 8
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 8
- 239000000440 bentonite Substances 0.000 claims description 8
- 229910000278 bentonite Inorganic materials 0.000 claims description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 8
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 7
- 229920002401 polyacrylamide Polymers 0.000 claims description 7
- 230000001376 precipitating effect Effects 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 239000011592 zinc chloride Substances 0.000 claims description 7
- 235000005074 zinc chloride Nutrition 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 3
- 229940009859 aluminum phosphate Drugs 0.000 claims description 3
- 229920000388 Polyphosphate Polymers 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 239000001205 polyphosphate Substances 0.000 claims 1
- 235000011176 polyphosphates Nutrition 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 25
- 230000015271 coagulation Effects 0.000 description 19
- 238000005345 coagulation Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 16
- 238000012360 testing method Methods 0.000 description 14
- 239000013078 crystal Substances 0.000 description 13
- 230000035484 reaction time Effects 0.000 description 13
- 229910052742 iron Inorganic materials 0.000 description 8
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229920002873 Polyethylenimine Polymers 0.000 description 4
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 229940075507 glyceryl monostearate Drugs 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- XYMIWSPIYJQJGM-UHFFFAOYSA-H 2-chloro-4-[chloro-[(2-chloro-2-oxo-1,3,2lambda5,4-dioxaphosphalumetan-4-yl)oxy]phosphoryl]oxy-1,3,2lambda5,4-dioxaphosphalumetane 2-oxide Chemical compound P(=O)([O-])([O-])Cl.[Al+3].P(=O)([O-])([O-])Cl.P(=O)([O-])([O-])Cl.[Al+3] XYMIWSPIYJQJGM-UHFFFAOYSA-H 0.000 description 2
- IZHVBANLECCAGF-UHFFFAOYSA-N 2-hydroxy-3-(octadecanoyloxy)propyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)COC(=O)CCCCCCCCCCCCCCCCC IZHVBANLECCAGF-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- JRACSIVALHTHBR-UHFFFAOYSA-L dichlorozinc;ethane-1,2-diamine Chemical compound Cl[Zn]Cl.NCCN JRACSIVALHTHBR-UHFFFAOYSA-L 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000001804 emulsifying effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- BYMMIQCVDHHYGG-UHFFFAOYSA-N Cl.OP(O)(O)=O Chemical compound Cl.OP(O)(O)=O BYMMIQCVDHHYGG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- DQTRYXANLKJLPK-UHFFFAOYSA-N chlorophosphonous acid Chemical compound OP(O)Cl DQTRYXANLKJLPK-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 229940074045 glyceryl distearate Drugs 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A water treatment process of a sand-adding efficient sedimentation tank and a reagent for treatment thereof belong to the technical field of sewage treatment, and comprise the following steps: introducing the sewage into a fast mixing area, adding a coagulant, and stirring; adding a medium into the medium mixing zone, stirring, and adding a flocculating agent into a water inlet of the medium mixing zone, which enters the flocculation zone, so that the flocculating agent enters the flocculation zone along with sewage to perform flocculation reaction; the sewage enters a flocculation area to carry out flocculation reaction, and is stirred to form large granular flocs; the sewage enters a settling zone for settling, the medium and the sludge settle at the bottom of the settling zone, and clean water flow rises and then overflows from the top; the medium comprises a mixture of pomegranate sand and iron powder; and adopts a coagulant and a flocculating agent which are specially prepared for water treatment. The invention has simple treatment process, can effectively improve the effluent quality, reduce the use amount of the medicament, reduce the water treatment load and save the water treatment cost.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a water treatment process of a sand-adding efficient sedimentation tank and a reagent for treating the water.
Background
The sedimentation tank mainly aims at realizing the treatment and the purification of sewage, utilizes the downward sedimentation speed of suspended impurity particles in water flow to be greater than the upward flowing speed of the water flow, or the downward sedimentation time to be less than the time of the water flow flowing out of the sedimentation tank, thereby leading the impurities to be settled and overflowing cleanly, and meeting the standard water flow. In order to realize rapid sewage treatment, small particles in sewage need to be rapidly combined to form large and stable flocs, so that sewage is effectively treated, the particle settling time is shortened, and the treatment efficiency and the sewage purification effect are improved.
Although the sewage treatment of the sedimentation tank in China is already carried out on a primary scale at present, the treatment process is also advanced a lot, but the existing sedimentation tank water treatment process has many problems, for example, although the effluent cleanliness is standard, the effluent quality is not high enough because the sewage and the medicament are not uniformly dispersed and are not sufficiently mixed, and stable crystal nuclei and larger flocs are not formed, so that expensive instruments are required to be invested or more complicated treatment processes are required to be used to improve the water quality, and the use amount of the medicament is increased, so that the medicament and treatment cost is greatly increased, and the cost is rapidly increased. Therefore, how to improve the effluent quality under the conditions of reducing the usage amount of the medicament and controlling the cost is the biggest problem in the industry, and the method is a great way for various manufacturers to improve the self-core competitiveness. However, even though each large manufacturer invests a lot of research and development expenses to research and develop, no obvious progress and effect can be achieved.
In addition, the efficiency of the treatment sewage that adopts sedimentation tank water technology at present is not high, and is consuming time longer, need use great sewage treatment place to handle and hoarded sewage, and need wait for the granule flocculation in the sewage in the processing procedure, slowly subside, consequently lead to occupying a large amount of land area in the sedimentation tank water treatment technological process, and the clean rivers of retrieving are slower, this also is a big bottleneck problem that meets in the sedimentation tank water treatment process. How to effectively shorten the reaction time of each link in the sedimentation tank water treatment process, and then improve holistic treatment effeciency, avoid the sewage to hoard and occupy great land area in the treatment process, become another serious problem that this trade needs to solve urgently.
Disclosure of Invention
Aiming at the defects and shortcomings in the background technology, the invention provides a sand-adding efficient sedimentation tank water treatment process and a treatment reagent thereof, which can effectively improve the effluent quality, reduce the usage amount of the reagent, reduce the water treatment load and save the water treatment cost.
In order to realize the purpose, the invention adopts the following technical scheme to realize the purpose:
a water treatment process for a sand-adding efficient sedimentation tank comprises the following steps:
and (3) fast mixing: introducing the sewage into a fast mixing area, adding a coagulant, stirring to enable the sewage and the coagulant to be fast mixed to form floc particles, and then flowing into a medium mixing area;
a medium mixing step: adding a medium into the medium mixing zone, stirring to fully mix the sewage and the medium, and then adding a flocculating agent into a water inlet of the medium mixing zone, which enters the flocculation zone, so that the flocculating agent enters the flocculation zone along with the sewage to perform flocculation reaction;
flocculation step: the sewage enters a flocculation zone to carry out flocculation reaction, is stirred to form large granular flocs and then flows into a settling zone;
and (3) precipitating and discharging water: the sewage enters a settling zone for settling, the medium and the sludge settle at the bottom of the settling zone, and clean water flow rises and then overflows from the top;
the medium comprises a mixture of pomegranate sand and iron powder, and the mass ratio of the pomegranate sand to the iron powder is (4-9): 1.
further measures taken are: the medium further comprises carbon powder, and the mass ratio of the iron powder to the carbon powder is (1-3): 1.
further measures taken are: in the medium mixing step, a mixture of medium pomegranate sand and iron powder is added in a medium mixing area, and medium carbon powder is added while a flocculating agent is added.
A coagulant for water treatment in a sand-adding high-efficiency sedimentation tank comprises anionic polymethacrylamide, glass fiber, methacrylic acid, bentonite, aluminum chloride and ferric chloride.
Further measures taken are: also comprises organosilicon modified polyurethane and formaldehyde.
Further measures taken are: the following components are 3-10 parts of anionic polyacrylamide, 2-8 parts of glass fiber, 1-5 parts of methacrylic acid, 15-30 parts of bentonite, 10-20 parts of aluminum chloride, 15-25 parts of ferric chloride, 1-6 parts of organic silicon modified polyurethane and 1-3 parts of formaldehyde by weight.
A flocculant for treating water in a sand-adding efficient sedimentation tank comprises polyferric trichloride, lime powder, hydroxyethyl cellulose, poly-aluminum phosphate chloride and calcium citrate.
Further measures taken are: also included are methacrylic acid, polyurethane.
Further measures taken are: also comprises ammonium persulfate, sodium carbonate, zinc chloride, aluminum sulfate and ethylenediamine.
Further measures taken are: the components with the corresponding mass fractions of 2-5 parts of polyferric trichloride, 5-15 parts of lime powder, 1-5 parts of hydroxyethyl cellulose, 2-10 parts of poly-aluminum-phosphate chloride, 5-20 parts of calcium citrate, 2-8 parts of methacrylic acid, 1-5 parts of polyurethane, 1-10 parts of ammonium persulfate, 2-15 parts of sodium carbonate, 1-10 parts of zinc chloride, 1-10 parts of aluminum sulfate and 1-6 parts of ethylenediamine.
The traditional sand adding sedimentation tank is generally added with various micro yarns as a medium, so that crystal nuclei are formed in the water treatment process, the magnetic sedimentation tank is also used as a magnetic sedimentation tank, iron ore is used as the medium, the effect can be accelerated, the combining and uniformly mixing effects are not added, the scheme of adding magnetism to the micro sand is proposed, but the effect of the common micro sand and the iron ore cannot be increased, the effect is influenced inversely and slightly decreased, and therefore the current sand adding sedimentation tank cannot add magnetism. However, long-term research shows that the pomegranate sand is used as the micro-sand, iron ore is not used, iron powder is used as the magnetic material, the pomegranate sand and the iron ore are ingeniously combined, the proportion of the iron ore and the iron ore is strictly controlled, the excellent effects of uniformly mixing and combining to form stable crystal nuclei can be realized, the speed is high, the using amount is low, the traditional knowledge is broken through, the treatment process steps are simple, the operation is easy, and good economic benefits are obtained. In addition, a small amount of carbon powder, the pomegranate sand and the iron powder are added to serve as media, and the adding time is later than that of the pomegranate sand and the iron powder, so that the formed crystal nucleus can be further stabilized, the full and uniform combination of particles in sewage is facilitated, and the efficiency of forming the stable crystal nucleus is further improved.
The invention also develops a coagulant with excellent coagulation effect, adopts anionic polyacrylamide as a base, adds bentonite, aluminum chloride and ferric chloride, particularly adds glass fiber and methacrylic acid which are not regarded and applied in the field, promotes the aggregation of particles through the methacrylic acid, and the glass fiber forms good coagulation effect, and the organic combination of the two plays an excellent coagulation effect, so that the coagulant can be fully and uniformly mixed and quickly formed in the initial stage of sewage treatment, the usage amount is relatively low, and the utilization rate of the coagulant is high. The coagulant also improves the efficiency of floc formation by adding the organic silicon modified polyurethane and formaldehyde for interaction, formaldehyde has a sterilization effect, and the research process of the team discovers that the stability of floc is improved by adding the organic silicon modified polyurethane, and formaldehyde promotes the floc to be rapidly formed and interacted, so that the coagulation effect is effectively improved, and the stable floc is rapidly formed. In addition, before the coagulant is added, a small amount of sludge and the mixture of polyethyleneimine and diglyceride are added, so that large granular substances can be firstly settled, subsequent coagulation is prevented from being influenced, and the dispersion of fine particles is promoted, thereby improving the coagulation effect of the subsequent coagulant.
The invention not only develops a coagulant which can be matched with the water treatment method for use, but also develops a corresponding flocculating agent to ensure the subsequent precipitation effect. According to research, the invention discovers that small flocs around crystal nuclei are promoted to be mutually gathered around the crystal nuclei by adding hydroxyethyl cellulose and poly aluminum chlorophosphate through mutual coordination, and simultaneously, the poly aluminum chlorophosphate promotes the small flocs around the crystal nuclei to be gradually adsorbed tightly, so that large flocs which are tight, firm and easy to settle are formed quickly under the hydraulic condition, and the poly ferric trichloride, the lime powder and the calcium citrate have the auxiliary effect of accelerating the formation of the large flocs, so that the large flocs are settled in a settling zone, particles are separated, and clean water flow overflows.
The flocculant of the invention is also added with methacrylic acid and polyurethane, so that the coagulation of large flocs is further promoted, and the formed large floc particles can be increased to a certain extent, so that the weight of the large flocs is increased, and the large flocs can be rapidly settled to the bottom of a sedimentation tank under the action of gravity; and the ammonium sulfate, the sodium carbonate, the zinc chloride, the aluminum sulfate and the ethylenediamine can further promote flocculation, increase the weight of formed large flocs and promote the settling efficiency of the large flocs.
In the step of precipitating the effluent, the sludge settled at the bottom of the precipitation zone can be recovered and conveyed to the medium mixing zone, and a special sludge pretreatment agent is added when the sludge is added into the medium zone, wherein the sludge pretreatment agent comprises a mixture of glyceryl monostearate, polymethacrylamide and polyethyleneimine, and the effect in sewage treatment is obvious. The glyceryl monostearate and the glyceryl distearate are mainly used in an emulsifier to play an emulsifying role, are not applied to sewage treatment, the mixture of the polymethacrylamide and the polyethyleneimine is rarely applied, the single practical treatment effect is poor and is unstable, however, the combination of the three components can promote the uniform mixing and dispersion of the sludge, so that large particles are easily formed in the sewage, the subsequent precipitation is facilitated, the quality of the treated water is improved, the adding time is very important, the early addition is realized, the substance has a certain emulsifying function, the water is easily turbid, the later addition influences the overflow of later clear water, the substance is mixed into the sludge and can promote the mixing and dissolution, the medium is promoted to form small flocs after crystal nuclei are formed, large-particle precipitates are formed, the water treatment process and efficiency are facilitated, and the addition amount is not required to be too much, the cost is low and the economic benefit is high.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the pomegranate sand is used as the micro-sand, the iron powder is used as the magnet, the two are ingeniously combined, excellent uniform mixing is realized, the stable crystal nucleus is formed by efficient and rapid combination, and the consumption of the required medium is low; and a small amount of carbon powder, pomegranate sand and iron powder are added as media, so that the full, uniform and stable combination of particles in sewage is facilitated, and the effluent quality and efficiency are improved.
2. The coagulant has excellent coagulation effect, adopts anionic polyacrylamide as a base and the like, and is particularly added with glass fiber and methacrylic acid which have not been regarded and applied in the field, so that the rapid aggregation of particles is promoted, and a good coagulation effect is formed; and the efficiency of floc formation is improved by adding the organic silicon modified polyurethane and formaldehyde to interact, the stability of floc is improved, and stable floc is quickly formed.
3. According to the invention, the flocculant is coordinated with poly-aluminum chloride by adding hydroxyethyl cellulose, so that a compact and firm large floc easy to settle is quickly formed under a hydraulic condition, and the flocculant also has the auxiliary effects of polymeric ferric trichloride, lime powder and calcium citrate, so that the formation of the large floc is accelerated; methacrylic acid, polyurethane and the like are added to promote the coagulation of the large flocs, increase the weight of the formed large flocs and promote the sedimentation of the large flocs.
Detailed Description
In order to clearly understand the technical solutions adopted by the present invention, the following description is made on the preferred embodiments of the present invention, and it should be understood that the embodiments described herein are only used for illustrating and explaining the present invention, and are not used to limit the present invention.
Example 1: a water treatment process for a sand-adding efficient sedimentation tank comprises the following steps:
and (3) fast mixing: introducing the sewage into a fast mixing area, adding a coagulant, stirring to enable the sewage and the coagulant to be fast mixed to form floc particles, and then flowing into a medium mixing area;
a medium mixing step: adding a medium into the medium mixing zone, stirring to fully mix the sewage and the medium, and then adding a flocculating agent into a water inlet of the medium mixing zone, which enters the flocculation zone, so that the flocculating agent enters the flocculation zone along with the sewage to perform flocculation reaction;
flocculation step: the sewage enters a flocculation zone to carry out flocculation reaction, is stirred to form large granular flocs and then flows into a settling zone;
and (3) precipitating and discharging water: the sewage enters a settling zone for settling, the medium and the sludge settle at the bottom of the settling zone, and clean water flow rises and then overflows from the top;
the medium comprises a mixture of pomegranate sand and iron powder, and the mass ratio of the pomegranate sand to the iron powder is 5: 1; the medium further comprises carbon powder, and the mass ratio of the iron powder to the carbon powder is 2: 1, in the medium mixing step, a mixture of medium pomegranate sand and iron powder is added in a medium mixing area, and medium carbon powder is added while a flocculating agent is added.
The coagulant for water treatment in the sand-adding efficient sedimentation tank comprises the following components of 8 parts of anionic polyacrylamide, 5 parts of glass fiber, 3 parts of methacrylic acid, 20 parts of bentonite, 15 parts of aluminum chloride, 20 parts of ferric chloride, 3 parts of organic silicon modified polyurethane and 2 parts of formaldehyde by mass.
The flocculating agent for water treatment of the sand-adding efficient sedimentation tank comprises, by mass, 3 parts of polyferric trichloride, 10 parts of lime powder, 3 parts of hydroxyethyl cellulose, 6 parts of polyaluminum chloride, 10 parts of calcium citrate, 5 parts of methacrylic acid, 3 parts of polyurethane, 8 parts of ammonium persulfate, 10 parts of sodium carbonate, 6 parts of zinc chloride, 6 parts of aluminum sulfate and 3 parts of ethylenediamine.
Example 2: a water treatment process for a sand-adding efficient sedimentation tank comprises the following steps:
and (3) fast mixing: introducing the sewage into a fast mixing area, adding a coagulant, stirring to enable the sewage and the coagulant to be fast mixed to form floc particles, and then flowing into a medium mixing area;
a medium mixing step: adding a medium into the medium mixing zone, stirring to fully mix the sewage and the medium, and then adding a flocculating agent into a water inlet of the medium mixing zone, which enters the flocculation zone, so that the flocculating agent enters the flocculation zone along with the sewage to perform flocculation reaction;
flocculation step: the sewage enters a flocculation zone to carry out flocculation reaction, is stirred to form large granular flocs and then flows into a settling zone;
and (3) precipitating and discharging water: the sewage enters a settling zone for settling, the medium and the sludge settle at the bottom of the settling zone, and clean water flow rises and then overflows from the top;
the medium comprises a mixture of pomegranate sand and iron powder, and the mass ratio of the pomegranate sand to the iron powder is 4: 1; the medium further comprises carbon powder, and the mass ratio of the iron powder to the carbon powder is 3: 1, in the medium mixing step, a mixture of medium pomegranate sand and iron powder is added in a medium mixing area, and medium carbon powder is added while a flocculating agent is added.
The coagulant for water treatment in the sand-adding efficient sedimentation tank comprises the following components of, by mass, 3 parts of anionic polyacrylamide, 2 parts of glass fiber, 1 part of methacrylic acid, 15 parts of bentonite, 20 parts of aluminum chloride, 25 parts of ferric chloride, 6 parts of organic silicon modified polyurethane and 3 parts of formaldehyde.
The flocculating agent for water treatment of the sand-adding efficient sedimentation tank comprises the following components of, by mass, 2 parts of polyferric trichloride, 5 parts of lime powder, 1 part of hydroxyethyl cellulose, 2 parts of polyaluminum chloride, 20 parts of calcium citrate, 8 parts of methacrylic acid, 5 parts of polyurethane, 10 parts of ammonium persulfate, 2 parts of sodium carbonate, 1 part of zinc chloride, 10 parts of aluminum sulfate and 1 part of ethylenediamine.
Example 3: a water treatment process for a sand-adding efficient sedimentation tank comprises the following steps:
and (3) fast mixing: introducing the sewage into a fast mixing area, adding a coagulant, stirring to enable the sewage and the coagulant to be fast mixed to form floc particles, and then flowing into a medium mixing area;
a medium mixing step: adding a medium into the medium mixing zone, stirring to fully mix the sewage and the medium, and then adding a flocculating agent into a water inlet of the medium mixing zone, which enters the flocculation zone, so that the flocculating agent enters the flocculation zone along with the sewage to perform flocculation reaction;
flocculation step: the sewage enters a flocculation zone to carry out flocculation reaction, is stirred to form large granular flocs and then flows into a settling zone;
and (3) precipitating and discharging water: the sewage enters a settling zone for settling, the medium and the sludge settle at the bottom of the settling zone, and clean water flow rises and then overflows from the top;
the medium comprises a mixture of pomegranate sand and iron powder, and the mass ratio of the pomegranate sand to the iron powder is 9: 1.
the coagulant for water treatment in the sand-adding efficient sedimentation tank comprises the following components of, by mass, 10 parts of anionic polyacrylamide, 8 parts of glass fiber, 5 parts of methacrylic acid, 30 parts of bentonite, 10 parts of aluminum chloride and 15 parts of ferric chloride.
The flocculating agent for water treatment in the sand-adding efficient sedimentation tank comprises the following components of, by mass, 5 parts of polyferric trichloride, 15 parts of lime powder, 5 parts of hydroxyethyl cellulose, 10 parts of polyaluminum phosphate chloride, 5 parts of calcium citrate, 2 parts of methacrylic acid and 1 part of polyurethane.
Example 4: the same treatment method and reagents as in example 1 were used, and in the step of precipitating effluent, sludge settled at the bottom of the precipitation zone was recovered, transferred to the medium mixing zone, and a specific sludge pretreating agent comprising 10 to 25 parts of glyceryl monostearate, 15 to 35 parts of polymethacrylamide, and 15 to 35 parts of polyethyleneimine was added when the sludge was added to the medium zone.
The invention also carried out the following comparative experiments, in which the cases of comparative examples 1 to 6 are shown below.
Comparative example 1: the same treatment and reagents as used in example 1 were used except that no garnet was added.
Comparative example 2: the iron powder was changed to iron ore, and the treatment method and the reagents were the same as those used in example 1.
Comparative example 3: the same treatment and reagents as used in example 1 were used except that no glass fiber was added.
Comparative example 4: the same treatment method and reagents as used in example 1 were used except that methacrylic acid was not added.
Comparative example 5: the same treatment and reagents as used in example 1 were used except that hydroxyethyl cellulose was not added.
Comparative example 6: the same treatment and reagents as used in example 1 were used except that no polyaluminum chlorophosphite was added.
The SS concentration and the TP concentration of the effluent suspended matters treated by the water treatment processes of the above examples 1-4 and comparative examples 1-6 are detected, the SS concentration and the TP concentration of the effluent suspended matters of each group of tests are measured for 3 times respectively, and then the test results are summarized as shown in the following table 1, wherein the SS concentration of the effluent suspended matters of the industry standard is less than or equal to 10mg/L, and the TP concentration of the effluent orthophosphate is less than or equal to 0.4 mg/L.
Table 1: testing results of SS concentration and TP concentration of effluent
From the detection results of table 1 above, it can be seen that the use of the water treatment process and the corresponding reagents of this embodiment 1-4 can greatly reduce the SS concentration and TP concentration of the effluent during the advanced treatment, thereby greatly improving the quality of the effluent, and from embodiment 4, the addition of the specially prepared sludge pretreatment agent to the return sludge can make the water treatment process more sufficient, the overall mixing degree is good, and the aggregation of particles is promoted to form large particles, thereby finally significantly improving the quality of the water treatment in the later stage.
In addition, as can be seen from comparative examples 1-6, the addition of coagulant, flocculant and medium also affects the quality and cleanliness of the final effluent, and especially the selection of flocculant and medium is important.
(II) simulating sewage treatment in a sewage plant in the water treatment process of the above examples 1-4 and comparative examples 1-6, and detecting the reaction time in each process. Each group of experiments adopts effluent from a biochemical pool of the same sewage plant, the concentration of suspended substances SS and the concentration of orthophosphate TP in the sewage are kept the same, then the sewage is treated by adopting the treatment processes of examples 1-4 and comparative examples 1-6 respectively until the same discharge standard is reached, and the reaction time of a coagulation zone, a medium zone and a flocculation zone is detected respectively when the average flow is 4,167m3/h and the peak flow is 5,417m3/h, so that the treatment speed and the actual effect of different treatment processes are reflected. The detection data during the test are summarized, and the final results are shown in the following tables 2 to 4.
Table 2: test results of reaction time in fast mixing zone
Table 3: results of Medium zone reaction time test
Table 4: flocculation zone reaction time test results
As is apparent from the test results of tables 3-4 above, the water treatment process and the corresponding reagent of the embodiments 1-4 can significantly accelerate the water treatment process, improve the actual effect of sewage treatment, further reduce the time for the sewage treatment to stay in the sedimentation tank, and improve the economic benefits. Wherein, the embodiment 4 is the optimal embodiment, and the sewage treatment process is rapid and efficient. From comparative examples 1-6, in different treatment processes, namely the reaction time of the coagulation zone, the medium zone and the flocculation zone, it can be seen that the glass fiber and the methacrylic acid in the coagulant play important roles in the coagulation process, and need the organic combination and interaction of the two, so as to be capable of fully and uniformly mixing and quickly forming flocs at the initial stage of sewage treatment, and play an excellent coagulation role, thereby reducing the coagulation reaction time and improving the coagulation efficiency; the hydroxyethyl cellulose and the poly-phosphorus aluminum chloride in the flocculating agent play a key role in the flocculation reaction, and the hydroxyethyl cellulose and the poly-phosphorus aluminum chloride are closely coordinated with each other, so that the formation of large compact and easy-to-settle flocs is accelerated under the hydraulic condition, the time required by the reaction is reduced, and the flocculation efficiency is improved; and the interaction of the pomegranate sand and the iron powder can quickly form stable and effective crystal nuclei, so that the reaction time of the medium area is shortened, and the iron powder is required to be adopted, and if the iron ore is changed, the reaction time of the sewage for forming the crystal nuclei through the medium is influenced.
In addition, from the comparison between the example 3 and the examples 1-2, it can be seen that 3 parts of organosilicon modified polyurethane and formaldehyde in the coagulant, 3 parts of ammonium persulfate, sodium carbonate, zinc chloride ethylenediamine and the like in the flocculant, and the medium carbon powder is added while the flocculant is added, which are beneficial to improving the reaction time in the coagulation zone, the flocculation zone and the medium zone, thereby further shortening the whole reaction time and improving the whole treatment efficiency.
(III) the water treatment processes of the above examples 1 to 4 and comparative examples 1 to 6 were subjected to the agent consumption tests of the average flow rate and the peak flow rate during the treatment. Each set of tests was conducted using effluent from the biochemical tank of the same sewage plant while maintaining the same concentration of suspended solids SS and orthophosphate TP in the effluent, then the effluent was treated by the treatment processes of examples 1 to 4 and comparative examples 1 to 6, respectively, until the same discharge standard was achieved, and the consumption of coagulant, medium and flocculant was measured at an average flow rate of 4,167m3/h and a peak flow rate of 5,417m3/h, respectively, wherein the concentration of the coagulant used was 10% and the concentration of the flocculant was 0.2%, and the test data were summarized, and the results are shown in Table 5 below.
Table 5: consumption test results of coagulant, flocculant and medium
From the results of the above tests shown in Table 5, it can be seen that the water treatment processes of examples 1 to 4, i.e., the corresponding treatment reagents, can greatly reduce the amount of the reagents consumed in the treatment process, thereby not only reducing the load of sewage treatment, but also greatly saving the consumption cost of the reagents.
In addition, from the detection results of comparative examples 1 to 6, it can be known that the glass fiber and methacrylic acid in the coagulant play an important role in guaranteeing the coagulation effect and reducing the use amount of the coagulant; the hydroxyethyl cellulose and the poly-phosphorus aluminum chloride in the flocculant play an important role in the flocculation effect, so that the consumption of the coagulant can be obviously reduced, and the coagulation efficiency is improved; and mutually supporting of pomegranate sand and iron powder, can promote to form even, stable crystal nucleus among the sewage treatment to do benefit to the effect of follow-up flocculation, thereby reduce the use amount of medium, promote the utilization efficiency of medium.
Furthermore, as can be seen from the comparison between example 3 and examples 1-2, adding 3 parts of organosilicon modified polyurethane and formaldehyde to the coagulant, adding ammonium persulfate, sodium carbonate, zinc chloride ethylenediamine and the like to the flocculant, and adding the medium carbon powder while adding the flocculant can promote the uniform mixing of the sewage and the chemical agent, form stable flocs, further reduce the consumption of the whole chemical agent, and reduce the sewage treatment cost and the load in the water treatment process.
The test results show that the sand-adding sedimentation tank water treatment process and the treatment reagent thereof have the advantages of simple process operation, capability of improving the cleanliness of effluent, shortening the treatment reaction time, improving the efficiency, greatly reducing the consumption of the reagent, reducing the treatment cost and time, and extremely high use economic value and market application prospect.
The above description is only for the purpose of illustrating the embodiments of the present invention and not for the purpose of limiting the same, and equivalent modifications and variations of the embodiments of the present invention will be apparent to those skilled in the art without departing from the overall spirit of the invention.
Claims (10)
1. The water treatment process of the sand-adding efficient sedimentation tank is characterized by comprising the following steps of: the method comprises the following steps:
and (3) fast mixing: introducing the sewage into a fast mixing area, adding a coagulant, stirring to enable the sewage and the coagulant to be fast mixed to form floc particles, and then flowing into a medium mixing area;
a medium mixing step: adding a medium into the medium mixing zone, stirring to fully mix the sewage and the medium, and then adding a flocculating agent into a water inlet of the medium mixing zone, which enters the flocculation zone, so that the flocculating agent enters the flocculation zone along with the sewage to perform flocculation reaction;
flocculation step: the sewage enters a flocculation zone to carry out flocculation reaction, is stirred to form large granular flocs and then flows into a settling zone;
and (3) precipitating and discharging water: the sewage enters a settling zone for settling, the medium and the sludge settle at the bottom of the settling zone, and clean water flow rises and then overflows from the top;
the medium comprises a mixture of pomegranate sand and iron powder, and the mass ratio of the pomegranate sand to the iron powder is (4-9): 1.
2. the water treatment process of the sand-adding efficient sedimentation tank as claimed in claim 1, which is characterized in that: the medium further comprises carbon powder, and the mass ratio of the iron powder to the carbon powder is (1-3): 1.
3. the water treatment process of the sand-adding efficient sedimentation tank as claimed in claim 2, which is characterized in that: in the medium mixing step, a mixture of medium pomegranate sand and iron powder is added in a medium mixing area, and medium carbon powder is added while a flocculating agent is added.
4. The coagulant for water treatment in the sand-adding high-efficiency sedimentation tank is characterized in that: comprises anionic polymethacrylamide, glass fiber, methacrylic acid, bentonite, aluminum chloride and ferric chloride.
5. The coagulant for water treatment in the sand-adding high-efficiency sedimentation tank according to claim 4, which is characterized in that: also comprises organosilicon modified polyurethane and formaldehyde.
6. The coagulant for water treatment in the sand-adding high-efficiency sedimentation tank according to claim 5, which is characterized in that: the following components are 3-10 parts of anionic polyacrylamide, 2-8 parts of glass fiber, 1-5 parts of methacrylic acid, 15-30 parts of bentonite, 10-20 parts of aluminum chloride, 15-25 parts of ferric chloride, 1-6 parts of organic silicon modified polyurethane and 1-3 parts of formaldehyde by weight.
7. The flocculating agent for water treatment of the sand-adding efficient sedimentation tank is characterized in that: comprises polyferric trichloride, lime powder, hydroxyethyl cellulose, aluminium polyphosphate and calcium citrate.
8. The flocculant for water treatment in the sand-adding efficient sedimentation tank as claimed in claim 7, which is characterized in that: also included are methacrylic acid, polyurethane.
9. The flocculant for water treatment in the sand-adding efficient sedimentation tank according to claim 8, which is characterized in that: also comprises ammonium persulfate, sodium carbonate, zinc chloride, aluminum sulfate and ethylenediamine.
10. The flocculant for water treatment in the sand-adding efficient sedimentation tank as claimed in claim 9, which is characterized in that: the components with the corresponding mass fractions of 2-5 parts of polyferric trichloride, 5-15 parts of lime powder, 1-5 parts of hydroxyethyl cellulose, 2-10 parts of poly-aluminum-phosphate chloride, 5-20 parts of calcium citrate, 2-8 parts of methacrylic acid, 1-5 parts of polyurethane, 1-10 parts of ammonium persulfate, 2-15 parts of sodium carbonate, 1-10 parts of zinc chloride, 1-10 parts of aluminum sulfate and 1-6 parts of ethylenediamine.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3577341A (en) * | 1968-10-18 | 1971-05-04 | Pennwalt Corp | Water treatment |
| JP2003154389A (en) * | 2001-11-21 | 2003-05-27 | Kubota Corp | Advanced treatment method for sewage/wastewater |
| CN105271496A (en) * | 2015-10-26 | 2016-01-27 | 苏州书瑞环保科技有限公司 | Environment-friendly nano sedimentation agent for water treatment and preparation method of sedimentation agent |
| CN106698624A (en) * | 2017-03-08 | 2017-05-24 | 南通华新环保设备工程有限公司 | Dielectric-accelerated high-density sedimentation tank water treatment system and process |
| CN106745585A (en) * | 2016-11-29 | 2017-05-31 | 林康 | A kind of flocculant for sewage treatment |
| CN210394034U (en) * | 2019-03-28 | 2020-04-24 | 陕西玉水环境工程有限公司 | Mineral sand circulation high-speed sedimentation tank lifted by negative pressure |
| CN210419614U (en) * | 2019-05-13 | 2020-04-28 | 深圳市正达环境工程实业有限公司 | Efficient sewage sedimentation system with magnetic medium |
-
2021
- 2021-09-09 CN CN202111064667.4A patent/CN113666469A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3577341A (en) * | 1968-10-18 | 1971-05-04 | Pennwalt Corp | Water treatment |
| JP2003154389A (en) * | 2001-11-21 | 2003-05-27 | Kubota Corp | Advanced treatment method for sewage/wastewater |
| CN105271496A (en) * | 2015-10-26 | 2016-01-27 | 苏州书瑞环保科技有限公司 | Environment-friendly nano sedimentation agent for water treatment and preparation method of sedimentation agent |
| CN106745585A (en) * | 2016-11-29 | 2017-05-31 | 林康 | A kind of flocculant for sewage treatment |
| CN106698624A (en) * | 2017-03-08 | 2017-05-24 | 南通华新环保设备工程有限公司 | Dielectric-accelerated high-density sedimentation tank water treatment system and process |
| CN210394034U (en) * | 2019-03-28 | 2020-04-24 | 陕西玉水环境工程有限公司 | Mineral sand circulation high-speed sedimentation tank lifted by negative pressure |
| CN210419614U (en) * | 2019-05-13 | 2020-04-28 | 深圳市正达环境工程实业有限公司 | Efficient sewage sedimentation system with magnetic medium |
Non-Patent Citations (3)
| Title |
|---|
| 卢少忠编著: "《建筑涂料工程 性能•生产•施工》", 中国建材工业出版社, pages: 220 - 77 * |
| 时圣刚等编著: "《危险化学品环境污染事故应急处置实用技术》", 30 December 2015, 中国环境科学出版社, pages: 76 * |
| 赵福麟著: "《采油用剂》", 30 June 1997, 石油大学出版社, pages: 210 * |
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