CN114262118B - Wastewater treatment method for organic silicon resin production - Google Patents
Wastewater treatment method for organic silicon resin production Download PDFInfo
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- CN114262118B CN114262118B CN202111503204.3A CN202111503204A CN114262118B CN 114262118 B CN114262118 B CN 114262118B CN 202111503204 A CN202111503204 A CN 202111503204A CN 114262118 B CN114262118 B CN 114262118B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 19
- 239000010703 silicon Substances 0.000 title claims abstract description 19
- 229920005989 resin Polymers 0.000 title claims abstract description 18
- 239000011347 resin Substances 0.000 title claims abstract description 18
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 16
- 239000002351 wastewater Substances 0.000 claims abstract description 151
- 239000003921 oil Substances 0.000 claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims abstract description 53
- 239000002244 precipitate Substances 0.000 claims abstract description 40
- 238000001914 filtration Methods 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000005057 refrigeration Methods 0.000 claims abstract description 7
- 244000005700 microbiome Species 0.000 claims description 28
- 238000004659 sterilization and disinfection Methods 0.000 claims description 22
- 239000013049 sediment Substances 0.000 claims description 20
- 239000010865 sewage Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- 238000007254 oxidation reaction Methods 0.000 claims description 13
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 12
- 238000005273 aeration Methods 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 102000004190 Enzymes Human genes 0.000 claims description 11
- 108090000790 Enzymes Proteins 0.000 claims description 11
- 229920002401 polyacrylamide Polymers 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims description 11
- 229920002050 silicone resin Polymers 0.000 claims description 11
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 10
- 230000000813 microbial effect Effects 0.000 claims description 10
- 238000006864 oxidative decomposition reaction Methods 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000005189 flocculation Methods 0.000 claims description 8
- 230000016615 flocculation Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 230000015556 catabolic process Effects 0.000 claims description 6
- 238000006731 degradation reaction Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 230000001376 precipitating effect Effects 0.000 claims description 6
- 102000004882 Lipase Human genes 0.000 claims description 5
- 108090001060 Lipase Proteins 0.000 claims description 5
- 239000004367 Lipase Substances 0.000 claims description 5
- 241000187654 Nocardia Species 0.000 claims description 5
- 125000000129 anionic group Chemical group 0.000 claims description 5
- 239000008394 flocculating agent Substances 0.000 claims description 5
- 235000019421 lipase Nutrition 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 claims description 4
- 241000427940 Fusarium solani Species 0.000 claims description 2
- 241000589516 Pseudomonas Species 0.000 claims description 2
- 241000223259 Trichoderma Species 0.000 claims description 2
- 125000002091 cationic group Chemical group 0.000 claims description 2
- 229920005610 lignin Polymers 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 6
- 239000005416 organic matter Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 238000005238 degreasing Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 125000000962 organic group Chemical group 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention relates to the technical field of organic silicon resin production, in particular to a wastewater treatment method for organic silicon resin production, which comprises the following steps: coarse filtration step: filtering suspended matters, precipitate blocks and filiform matters in the wastewater through a grid machine, so that no obvious foreign matters exist in the wastewater, and classifying the filtered suspended matters, precipitate blocks and filiform matters according to organic matters and inorganic matters; the low temperature treatment step: introducing the filtered wastewater into a water pool in a refrigeration house for cooling and standing, so that oil and water in the wastewater are layered; and (3) oil removal: separating the oil on the upper layer of the layered wastewater, pouring the oil into a heating kettle for heating, and removing water in the oil. The invention has the beneficial effects that the low-temperature treatment step is utilized, so that the oil in the wastewater is layered with water when standing, and the oil becomes viscous by a low-temperature method, so that the oil is more conveniently separated from the water, and a large amount of oil in the wastewater is effectively removed.
Description
Technical Field
The invention relates to the technical field of organic silicon resin production, in particular to a wastewater treatment method for organic silicon resin production.
Background
The organic silicon resin is a polymer which is formed by alternately connecting silicon atoms and oxygen atoms, different organic groups are connected with the silicon atoms, the organic silicon resin structure contains both an organic group and an inorganic structure, and the special composition and molecular structure integrate the characteristics of organic matters and the functions of inorganic matters into a whole, so that a large amount of waste water is generated in the production process of the organic silicon resin, and a large amount of harmful matters exist in the waste water, so that the waste water needs to be treated before being discharged, and the waste water is prevented from polluting the environment.
Chinese patent number 201610431540.4 discloses a method for treating organic silicon wastewater, which relates to the technical field of wastewater treatment. It comprises the following steps: lime is added to adjust the pH value of the wastewater to 7.0-8.5, and most of the condensable organic matters are removed by precipitation; adding one or two of NaOH and KOH into the clear solution after precipitation to adjust the pH to be more than 11.5, heating to 60-80 ℃, polymerizing the organosilicon monomer for 5-12 hr, and filtering; continuously adding acid to control pH to 3.0-4.0 at 60-80deg.C, and adding ferrous iron and hydrogen peroxide to perform chemical oxidation treatment for 4-6hr; adding lime into the obtained clear solution to adjust the pH value to 6.0-8.5, standing, discharging the clear solution after reaching the standard, dehydrating the precipitate, drying and carrying out outward.
In the prior art, oil in wastewater produced by the silicone resin is not easy to remove, so that a large amount of oil in the wastewater is polluted by environment after being discharged, and acidic harmful substances in the wastewater are not thoroughly treated, so that the acidic substances are polluted by rivers and groundwater after being discharged, and therefore, a wastewater treatment method for the silicone resin production is needed to be designed to solve the problems.
Disclosure of Invention
The invention aims to provide a wastewater treatment method for organic silicon resin production, which aims to solve the problem that oil and acidic substances in wastewater cannot be effectively removed in the prior art.
The technical scheme of the invention is as follows: a waste water treatment method for the production of organic silicon resin, a waste water treatment method for the production of organic silicon resin, comprising the following steps;
coarse filtration step: filtering suspended matters, precipitate blocks and filiform matters in the wastewater through a grid machine, so that no obvious foreign matters exist in the wastewater, and classifying the filtered suspended matters, precipitate blocks and filiform matters according to organic matters and inorganic matters;
the low temperature treatment step: introducing the filtered wastewater into a water pool in a refrigeration house for cooling and standing, so that oil and water in the wastewater are layered;
and (3) oil removal: separating the oil on the upper layer of the layered wastewater, pouring the oil into a heating kettle for heating, and removing water in the oil;
and (3) adjusting the PH: pouring the wastewater into a container, adding an alkaline agent into the wastewater, stirring to keep the pH value of the wastewater between 7 and 8, and filtering and removing sediment at the bottom of the container;
and a heating step: burning the organic matters separated in the coarse filtering step to generate heat, heating the container and keeping the temperature constant;
the step of adding microorganisms: adding microorganisms and biological enzymes into the heated wastewater, and continuously introducing air into the wastewater to fully dissolve oxygen in the wastewater;
flocculation step: adding a flocculating agent into the wastewater subjected to microbial degradation and stirring to enable the wastewater to generate floccules;
separating and precipitating: filtering floccule precipitate generated in the sewage, airing the floccule precipitate, sending the floccule precipitate into a heating step for burning, and heating the sewage to provide fuel;
and (3) an oxidative decomposition step: introducing wastewater after separating floccule precipitation into an ozone reactor for oxidization, and conveying the wastewater into an aeration tank after the oxidization is finished;
and (3) a disinfection step: and (3) introducing the wastewater in the aeration tank into a disinfection tank for disinfection treatment, and discharging after removing suspended matters on the upper layer and sediments on the bottom.
Further, in the coarse filtration step, the filtered organic matters and inorganic matters are classified and then are dried respectively, and the dried inorganic matters are crushed and compressed.
Further, in the low-temperature treatment step, the temperature of the wastewater is 0-5 ℃, and the standing time is 3-5 h.
Further, in the degreasing step, the temperature inside the heating kettle is 150-200 ℃, and the oil in the heating kettle is stirred while being heated.
In the step of adjusting the pH, the alkaline agent is one or two of CaO powder and sodium hydroxide, and the bottom sediment of the container is dried and crushed.
Further, in the heating step, exhaust gas generated by burning the organic matter foreign matter is introduced into the wastewater in the pH adjusting step, and the temperature of the wastewater is 30-50 ℃.
Further, in the step of adding the microorganism, the microorganism is one or a combination of a plurality of nocardia, pseudomonas, fusarium solani and trichoderma lignin, and the biological enzyme is lipase.
Further, in the step of adding the microorganisms, the microbial decomposition time is 3.5-5 h, and in the flocculation step, the flocculant is one or a combination of more than two of anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide and zwitterionic polyacrylamide.
Further, in the separation and precipitation step, ash produced by combustion of the floc precipitate is poured into a container containing lime water, and a mixture of the lime water and the ash is stirred, and the ash is buried after being precipitated and dried.
Further, in the oxidative decomposition step, the flow rate of the wastewater passing through the ozone reactor is 0.3-0.8m 3 And/min, in the disinfection step, the suspended matters and the bottom sediment are dehydrated and then buried after being compressed.
The invention provides a wastewater treatment method for the production of organic silicon resin by improving the method, which has the following improvement and advantages compared with the prior art:
(1) According to the invention, the low-temperature treatment step is utilized, so that the oil in the wastewater is layered with water when standing, and the oil becomes viscous by a low-temperature method, so that the oil and the water are more conveniently separated, and a large amount of oil in the wastewater is effectively removed.
(2) The invention adds alkaline agent into the waste water to neutralize the acid solution such as hydrochloric acid, sulfuric acid and the like in the waste water, so as to precipitate the production, further reduce the acid value of the waste water and prevent the pollution to river and underground water after the waste water is discharged.
(3) The invention heats the separated oil to remove water, so that the heating of the wastewater can provide fuel through the separated oil, thereby realizing the effect of saving energy, and the waste gas generated by the oil is introduced into alkaline sewage, so that harmful substances in the waste gas are eliminated again, and further, the treatment of the harmful substances in the sewage is more thorough.
(4) The invention oxidizes the wastewater by utilizing the ozone reactor, so that microorganisms and organic matters in the wastewater can be thoroughly decomposed again, thereby further realizing the effect of more thoroughly treating the wastewater in the production of the organic silicon resin.
Drawings
The invention is further explained below with reference to the drawings and examples.
FIG. 1 is a flow chart of wastewater treatment according to the present invention.
Detailed Description
The following detailed description of the present invention will be provided with reference to fig. 1, in which the technical solutions of the embodiments of the present invention are clearly and completely described, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
A wastewater treatment method for the production of organic silicon resin comprises the following steps;
coarse filtration step: filtering suspended matters, precipitate blocks and filiform matters in the wastewater through a grid machine, so that no obvious foreign matters exist in the wastewater, and classifying the filtered suspended matters, precipitate blocks and filiform matters according to organic matters and inorganic matters;
the low temperature treatment step: introducing the filtered wastewater into a water pool in a refrigeration house for cooling and standing, so that oil and water in the wastewater are layered;
and (3) oil removal: separating the oil on the upper layer of the layered wastewater, pouring the oil into a heating kettle for heating, and removing water in the oil;
and (3) adjusting the PH: pouring the wastewater into a container, adding an alkaline agent into the wastewater, stirring to keep the pH value of the wastewater at 7, and filtering and removing sediment at the bottom of the container;
and a heating step: burning the organic matters separated in the coarse filtering step to generate heat, heating the container and keeping the temperature constant;
the step of adding microorganisms: adding microorganisms and biological enzymes into the heated wastewater, and continuously introducing air into the wastewater to fully dissolve oxygen in the wastewater;
flocculation step: adding a flocculating agent into the wastewater subjected to microbial degradation and stirring to enable the wastewater to generate floccules;
separating and precipitating: filtering floccule precipitate generated in the sewage, airing the floccule precipitate, sending the floccule precipitate into a heating step for burning, and heating the sewage to provide fuel;
and (3) an oxidative decomposition step: introducing wastewater after separating floccule precipitation into an ozone reactor for oxidization, and conveying the wastewater into an aeration tank after the oxidization is finished;
and (3) a disinfection step: and (3) introducing the wastewater in the aeration tank into a disinfection tank for disinfection treatment, and discharging after removing suspended matters on the upper layer and sediments on the bottom.
Further, in the coarse filtration step, the filtered organic matters and inorganic matters are classified and then dried respectively, and the dried inorganic matters are crushed and compressed.
Further, in the low-temperature treatment step, the temperature of the wastewater was 0 ℃, and the standing time was 3 hours.
Further, in the degreasing step, the temperature inside the heating kettle is 150 ℃, and the oil in the heating kettle is stirred while being heated.
Further, in the step of adjusting the PH, the alkaline agent is CaO powder, and the bottom precipitate of the container is dried and pulverized.
Further, in the heating step, exhaust gas generated by burning the organic matter foreign matter is introduced into the wastewater in the PH adjusting step, and the temperature of the wastewater is 30 ℃.
Further, in the step of adding a microorganism, the microorganism is nocardia and the biological enzyme is lipase.
Further, in the step of adding the microorganism, the time for decomposing the microorganism is 3.5 hours, and in the step of flocculating, the flocculant is anionic polyacrylamide.
Further, in the separation and precipitation step, ash produced by combustion of the floc precipitate is poured into a container containing lime water, and a mixture of the lime water and the ash is stirred, and the ash is buried after being precipitated and dried.
Further, in the oxidative decomposition step, the flow rate of the wastewater passing through the ozone reactor was 0.3m 3 In the disinfection step, the suspended matter and the bottom sediment are dehydrated and then buried after being compressed.
Example two
A wastewater treatment method for the production of organic silicon resin comprises the following steps;
coarse filtration step: filtering suspended matters, precipitate blocks and filiform matters in the wastewater through a grid machine, so that no obvious foreign matters exist in the wastewater, and classifying the filtered suspended matters, precipitate blocks and filiform matters according to organic matters and inorganic matters;
the low temperature treatment step: introducing the filtered wastewater into a water pool in a refrigeration house for cooling and standing, so that oil and water in the wastewater are layered;
and (3) oil removal: separating the oil on the upper layer of the layered wastewater, pouring the oil into a heating kettle for heating, and removing water in the oil;
and (3) adjusting the PH: pouring the wastewater into a container, adding an alkaline agent into the wastewater, stirring to keep the pH value of the wastewater at 7, and filtering and removing sediment at the bottom of the container;
and a heating step: burning the organic matters separated in the coarse filtering step to generate heat, heating the container and keeping the temperature constant;
the step of adding microorganisms: adding microorganisms and biological enzymes into the heated wastewater, and continuously introducing air into the wastewater to fully dissolve oxygen in the wastewater;
flocculation step: adding a flocculating agent into the wastewater subjected to microbial degradation and stirring to enable the wastewater to generate floccules;
separating and precipitating: filtering floccule precipitate generated in the sewage, airing the floccule precipitate, sending the floccule precipitate into a heating step for burning, and heating the sewage to provide fuel;
and (3) an oxidative decomposition step: introducing wastewater after separating floccule precipitation into an ozone reactor for oxidization, and conveying the wastewater into an aeration tank after the oxidization is finished;
and (3) a disinfection step: and (3) introducing the wastewater in the aeration tank into a disinfection tank for disinfection treatment, and discharging after removing suspended matters on the upper layer and sediments on the bottom.
Further, in the coarse filtration step, the filtered organic matters and inorganic matters are classified and then dried respectively, and the dried inorganic matters are crushed and compressed.
Further, in the low-temperature treatment step, the temperature of the wastewater was 0 ℃, and the standing time was 3 hours.
Further, in the degreasing step, the temperature inside the heating kettle is 150 ℃, and the oil in the heating kettle is stirred while being heated.
Further, in the step of adjusting the PH, the alkaline agent is CaO powder, and the bottom precipitate of the container is dried and pulverized.
Further, in the heating step, exhaust gas generated by burning the organic matter foreign matter is introduced into the wastewater in the PH adjusting step, and the temperature of the wastewater is 30 ℃.
Further, in the step of adding a microorganism, the microorganism is nocardia and the biological enzyme is lipase.
Further, in the step of adding the microorganism, the time for decomposing the microorganism is 4 hours, and in the step of flocculating, the flocculant is anionic polyacrylamide.
Further, in the separation and precipitation step, ash produced by combustion of the floc precipitate is poured into a container containing lime water, and a mixture of the lime water and the ash is stirred, and the ash is buried after being precipitated and dried.
Further, in the oxidative decomposition step, the flow rate of the wastewater passing through the ozone reactor was 0.3m 3 In the disinfection step, the suspended matter and the bottom sediment are dehydrated and then buried after being compressed.
Example III
A wastewater treatment method for the production of organic silicon resin comprises the following steps;
coarse filtration step: filtering suspended matters, precipitate blocks and filiform matters in the wastewater by a grid machine, so that no obvious foreign matters exist in the wastewater, classifying the filtered suspended matters, precipitate blocks and filiform matters according to organic matters and inorganic matters, respectively airing the filtered organic matters and inorganic matters after classifying, and crushing and compressing the aired inorganic matters;
the low temperature treatment step: introducing the filtered wastewater into a water pool in a refrigeration house for cooling and standing, so that oil and water in the wastewater are layered, wherein the temperature of the wastewater is 0 ℃, and the standing time is 3 hours;
and (3) oil removal: separating the oil on the upper layer of the layered wastewater, pouring the oil into a heating kettle for heating, removing water in the oil, heating the oil in the heating kettle while stirring at the temperature of 150 ℃;
and (3) adjusting the PH: pouring the wastewater into a container, adding an alkaline agent into the wastewater, stirring to keep the pH value of the wastewater at 7, filtering and removing sediment at the bottom of the container, wherein the alkaline agent is CaO powder, airing the sediment at the bottom of the container, and crushing;
and a heating step: burning the organic matters separated in the coarse filtering step, so that heat generated by burning heats the container, the temperature is kept constant, and waste gas generated by burning the organic matters is introduced into waste water in the PH adjusting step, wherein the temperature of the waste water is 30 ℃;
the step of adding microorganisms: adding microorganisms and biological enzymes into the heated wastewater, and continuously introducing air into the wastewater to fully dissolve oxygen in the wastewater, wherein the microorganisms are nocardia, the biological enzymes are lipases, and the microbial decomposition time is 4.5 hours;
flocculation step: adding a flocculant into the wastewater subjected to microbial degradation and stirring to generate floccules, wherein the flocculant is anionic polyacrylamide;
separating and precipitating: filtering floccule precipitate generated in sewage, airing the floccule precipitate, sending the floccule precipitate into a heating step for burning, heating the sewage to provide fuel, pouring ash generated by burning the floccule precipitate into a container containing lime water, stirring a mixture of the lime water and the ash, and burying the ash after the deposition and airing;
and (3) an oxidative decomposition step: introducing the wastewater from which the floccule is separated and precipitated into an ozone reactor for oxidation, and conveying the wastewater into an aeration tank after the oxidation is finished, wherein the flow rate of the wastewater passing through the ozone reactor is 0.3m 3 /min；
And (3) a disinfection step: and (3) introducing the wastewater in the aeration tank into a disinfection tank for disinfection treatment, removing suspended matters on the upper layer and sediments on the bottom, discharging, dehydrating the suspended matters and the sediments on the bottom, and burying after compression.
In the first, second and third embodiments, the results of the third embodiment are best by comparing the organic matter content detected by the treated wastewater under the same conditions except that the microbial decomposition time is 4.5 hours.
The working principle of the invention is as follows: coarse filtration step: filtering suspended matters, precipitate blocks and filiform matters in the wastewater through a grid machine, so that no obvious foreign matters exist in the wastewater, and classifying the filtered suspended matters, precipitate blocks and filiform matters according to organic matters and inorganic matters; the low temperature treatment step: introducing the filtered wastewater into a water pool in a refrigeration house for cooling and standing, so that oil and water in the wastewater are layered; and (3) oil removal: separating the oil on the upper layer of the layered wastewater, pouring the oil into a heating kettle for heating, and removing water in the oil; and (3) adjusting the PH: pouring the wastewater into a container, adding an alkaline agent into the wastewater, stirring to keep the pH value of the wastewater between 7, and filtering and removing sediment at the bottom of the container; and a heating step: burning the organic matters separated in the coarse filtering step to generate heat, heating the container and keeping the temperature constant; the step of adding microorganisms: adding microorganisms and biological enzymes into the heated wastewater, and continuously introducing air into the wastewater to fully dissolve oxygen in the wastewater; flocculation step: adding a flocculating agent into the wastewater subjected to microbial degradation and stirring to enable the wastewater to generate floccules; separating and precipitating: filtering floccule precipitate generated in the sewage, airing the floccule precipitate, sending the floccule precipitate into a heating step for burning, and heating the sewage to provide fuel; and (3) an oxidative decomposition step: introducing wastewater after separating floccule precipitation into an ozone reactor for oxidization, and conveying the wastewater into an aeration tank after the oxidization is finished; and (3) a disinfection step: and (3) introducing the wastewater in the aeration tank into a disinfection tank for disinfection treatment, and discharging after removing suspended matters on the upper layer and sediments on the bottom.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A wastewater treatment method for the production of organic silicon resin is characterized in that: comprises the following steps of;
coarse filtration step: filtering suspended matters, precipitate blocks and filiform matters in the wastewater through a grid machine, so that no obvious foreign matters exist in the wastewater, and classifying the filtered suspended matters, precipitate blocks and filiform matters according to organic matters and inorganic matters;
the low temperature treatment step: introducing the filtered wastewater into a water pool in a refrigeration house for cooling and standing, so that oil and water in the wastewater are layered;
and (3) oil removal: separating the oil on the upper layer of the layered wastewater, pouring the oil into a heating kettle for heating, and removing water in the oil;
and (3) a step of adjusting pH: pouring the wastewater into a container, adding an alkaline agent into the wastewater, stirring to keep the pH value of the wastewater between 7 and 8, and filtering and removing sediment at the bottom of the container;
and a heating step: burning the organic matters separated in the coarse filtering step to generate heat, heating the container and keeping the temperature constant;
the step of adding microorganisms: adding microorganisms and biological enzymes into the heated wastewater, and continuously introducing air into the wastewater to fully dissolve oxygen in the wastewater;
flocculation step: adding a flocculating agent into the wastewater subjected to microbial degradation and stirring to enable the wastewater to generate floccules;
separating and precipitating: filtering floccule precipitate generated in the sewage, airing the floccule precipitate, sending the floccule precipitate into a heating step for burning, and heating the sewage to provide fuel;
and (3) an oxidative decomposition step: introducing wastewater after separating floccule precipitation into an ozone reactor for oxidization, and conveying the wastewater into an aeration tank after the oxidization is finished;
and (3) a disinfection step: and (3) introducing the wastewater in the aeration tank into a disinfection tank for disinfection treatment, and discharging after removing suspended matters on the upper layer and sediments on the bottom.
2. The method for treating wastewater from silicone resin production according to claim 1, wherein: in the coarse filtration step, the filtered organic matters and inorganic matters are classified and then are respectively dried, and the dried inorganic matters are crushed and compressed.
3. The method for treating wastewater from silicone resin production according to claim 1, wherein: in the low-temperature treatment step, the temperature of the wastewater is 0-5 ℃, and the standing time is 3-5 h.
4. The method for treating wastewater from silicone resin production according to claim 1, wherein: in the oil removing step, the temperature inside the heating kettle is 150-200 ℃, and the oil in the heating kettle is stirred while being heated.
5. The method for treating wastewater from silicone resin production according to claim 1, wherein: in the step of adjusting the pH, the alkaline agent is one or two of CaO powder and sodium hydroxide, and the bottom sediment of the container is dried and crushed.
6. The method for treating wastewater from silicone resin production according to claim 1, wherein: in the heating step, waste gas generated by burning the organic matters is introduced into the waste water in the pH adjusting step, and the temperature of the waste water is 30-50 ℃.
7. The method for treating wastewater from silicone resin production according to claim 1, wherein: in the step of adding the microorganism, the microorganism is one or a combination of a plurality of nocardia, pseudomonas, fusarium solani and trichoderma lignin, and the biological enzyme is lipase.
8. The method for treating wastewater from silicone resin production according to claim 1, wherein: in the step of adding the microorganisms, the microbial decomposition time is 3.5-5 h, and in the flocculation step, the flocculant is one or a combination of more than two of anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide and zwitterionic polyacrylamide.
9. The method for treating wastewater from silicone resin production according to claim 1, wherein: in the separation and precipitation step, ash produced by the combustion of floccule precipitate is poured into a container containing lime water, and a mixture of the lime water and the ash is stirred, and the ash is buried after being precipitated and dried.
10. A wastewater treatment plant for the production of silicone resins according to claim 1The processing method is characterized in that: in the oxidative decomposition step, the flow rate of the wastewater passing through the ozone reactor is 0.3-0.8m 3 And/min, in the disinfection step, the suspended matters and the bottom sediment are dehydrated and then buried after being compressed.
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