CN111333213A - Deodorization method for steam condensate water of autoclave in calcium silicate board production process - Google Patents
Deodorization method for steam condensate water of autoclave in calcium silicate board production process Download PDFInfo
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- CN111333213A CN111333213A CN202010124698.3A CN202010124698A CN111333213A CN 111333213 A CN111333213 A CN 111333213A CN 202010124698 A CN202010124698 A CN 202010124698A CN 111333213 A CN111333213 A CN 111333213A
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- steam condensate
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000000378 calcium silicate Substances 0.000 title claims abstract description 29
- 229910052918 calcium silicate Inorganic materials 0.000 title claims abstract description 29
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000004332 deodorization Methods 0.000 title claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 33
- 238000003756 stirring Methods 0.000 claims abstract description 30
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims abstract description 11
- 239000004927 clay Substances 0.000 claims abstract description 9
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000011259 mixed solution Substances 0.000 claims abstract description 6
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 5
- 230000001877 deodorizing effect Effects 0.000 claims description 12
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 5
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 claims description 2
- 229910001863 barium hydroxide Inorganic materials 0.000 claims description 2
- 238000011085 pressure filtration Methods 0.000 claims description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims 2
- 239000002351 wastewater Substances 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 description 6
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/12—Nature of the water, waste water, sewage or sludge to be treated from the silicate or ceramic industries, e.g. waste waters from cement or glass factories
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Removal Of Specific Substances (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention belongs to the technical field of wastewater deodorization, and particularly discloses a deodorization method for steam condensate water of an autoclave in a calcium silicate board production process. The method specifically comprises the following steps: adding activated clay into the steam condensate water to be treated, uniformly mixing, and filtering to obtain filtered water; adding a sulfuric acid solution into the obtained filtered water, adjusting the pH value to 1-3, adding potassium permanganate, uniformly stirring, and standing to obtain a mixed solution; adding activated carbon into the obtained mixed solution under continuous stirring, adding a neutralizing agent after uniform mixing, adjusting the pH value to 6-8, and filtering to obtain the effluent which is the water body after the treatment. The invention can ensure that the odor threshold value removal rate of steam condensate water of the autoclave in the production process of the calcium silicate board reaches more than 85 percent, the odor threshold value deodorization rate reaches 95.6 percent, the COD removal rate reaches 97.6 percent, the chroma is reduced to 0.1 degree, and the turbidity is reduced to 0 NTU.
Description
Technical Field
The invention belongs to the technical field of wastewater deodorization, and particularly relates to a deodorization method for steam condensate water of an autoclave in a calcium silicate board production process.
Background
In the production process of the calcium silicate board, a still kettle is needed for carrying out still pressure maintenance, and CaO-SiO is completed in the kettle2-H2The hydrothermal reaction of O, but the process generates a large amount of pungent and unpleasant steam. In the pastCalcium silicate board manufacture factory collects the back with steam, first through the heat exchanger, and then through UV photodissociation and spray defogging, then gaseous high altitude is discharged, and the shower water is gathered with the comdenstion water back, directly discharges to the external world, causes a large amount of water waste and polluted environment like this.
Along with the increasing strictness of environmental protection policies, calcium silicate board manufacturers discharge odor steam after passing through a heat exchanger and gas after being burned with liquefied petroleum gas, so that the discharge of a large amount of waste water is reduced. However, the steam condensate still contains a large amount of impurities and oil stains, and has bad odor, and if the steam condensate is directly reused in the production process of the calcium silicate board, the product can generate peculiar odor. Therefore, the problem of stink of steam condensate water of the still kettle is solved, the steam condensate water can meet the requirement of recycling, and the method has great significance for sustainable development of calcium silicate board production enterprises.
The literature report about the deodorization of steam condensate water in an autoclave in the production process of calcium silicate boards is not found.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention mainly aims to provide a method for deodorizing steam condensate water of an autoclave in the production process of a calcium silicate board.
The invention adopts the following technical scheme:
a deodorization method of steam condensate water of an autoclave in the production process of calcium silicate boards specifically comprises the following steps:
s1: adding activated clay with the dosage of 5-20g/L into steam condensate water to be treated, uniformly mixing, and filtering to obtain filtered water;
s2: adding a sulfuric acid solution into the filtered water obtained in the step S1, adjusting the pH value to 1-3, adding 15-40 mg/L potassium permanganate, uniformly stirring, and standing to obtain a mixed solution;
s3: and (4) under the stirring state, adding 20-50 mg/L of activated carbon into the mixed solution obtained in the step S2, uniformly mixing, adding a neutralizing agent, adjusting the pH value to 6-8, and filtering to obtain the effluent, namely the treated water body.
And S1, uniformly mixing for 30-90 min.
S1, filtering, namely preferably mixing uniformly and then performing filter pressing by using a screw lamination machine to obtain filtered water.
The mass fraction of the sulfuric acid solution of S2 is preferably 48% to 98%, more preferably 65%.
The standing time of S2 is more than 10 h.
S3, the time for mixing evenly is 90-150 min.
S3, the neutralizing agent is at least one of calcium oxide, calcium hydroxide, barium oxide, barium hydroxide and barium carbonate, preferably at least one of barium carbonate, calcium hydroxide and calcium oxide;
the filtration of S3 is preferably carried out by using a filter bag type filter; or a two-stage filtration system using a bag filter and a cartridge filter.
Wherein the filtration precision range of the filter bag type filter is 0.5-5 μm, preferably 1 μm; the filter precision range of the filter element filter is 0.20-0.65 mu m, and preferably 0.45 mu m.
Compared with the prior art, the invention has the following outstanding effects:
1. the method can ensure that the odor threshold value removal rate of the steam condensate water of the autoclave in the calcium silicate board production process reaches more than 85 percent, and the calcium silicate board product produced after recycling has no special odor and is easy to accept.
2. The deodorization rate reaches 95.6 percent through the deodorization threshold value of the invention, the COD removal rate reaches 97.6 percent, the chroma is reduced to 0.1 degree, and the turbidity is reduced to 0 NTU.
3. The method has the advantages of simple deodorization process flow, mild operation condition, low equipment investment and operation cost and easy popularization.
Drawings
FIG. 1 is a process flow diagram of the present invention.
FIG. 2 is photographs of the steam condensate of the autoclave in example 1 before and after the steam condensate treatment; wherein A is steam condensate of the autoclave before treatment, and B is the steam condensate of the autoclave after treatment.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.
And (3) detection of water quality: the pH value is measured by a PB-10 acidimeter; the conductivity is measured by a DDS-307A conductivity meter; the chroma is measured by a SD9012A water quality chroma meter; the turbidity was measured using an SGZ200AS turbidimeter; chemical Oxygen Demand (COD)Cr) Adopting DR3900 visible light spectrophotometer to carry out determination (Hash/HACH, rapid digestion of COD reagent, range of 100-1000 mg/L); odor was measured by odor threshold method (sample temperature was maintained at 60 ℃. + -. 1 ℃).
The steam condensate of the still kettle to be treated is a yellowish turbid liquid, and brown yellow oil stains (the oil stains come from a release agent during pressurization of a calcium silicate plate and prevent a template and a blank plate from being stuck together) float on the surface layer, as shown in figure 2A. The main indexes of water quality are shown in Table 1.
TABLE 1 Water quality index before steam condensate treatment in autoclave
Example 1
The method for deodorizing steam condensate in the autoclave in the calcium silicate board production process provided by the embodiment comprises the following steps:
s1: adding activated clay with the dosage of 20g/L into steam condensate water to be treated, stirring for 75min, and performing filter pressing by using a screw press to obtain filtered water.
S2: adding a sulfuric acid solution with the mass fraction of 65% into the filtered water obtained in the step S1, adjusting the pH value to 1.85, adding potassium permanganate with the dosage of 40mg/L, uniformly stirring, and standing for 24 hours.
S3: adding activated carbon with the dosage of 50mg/L into the water obtained in the step S2 under continuous stirring, stirring for 120min, slowly adding barium carbonate, adjusting the pH value to 7.75, and then passing through a two-stage filtration system of a bag filter (the filtration precision is 1 μm) and a filter element filter (the filtration precision is 0.45 μm), wherein the effluent is the water body after the treatment is finished, as shown in FIG. 2B.
Example 2
The method for deodorizing steam condensate in the autoclave in the calcium silicate board production process provided by the embodiment comprises the following steps:
s1: adding activated clay with the dosage of 13.3g/L into steam condensate water to be treated, stirring for 90min, and performing filter pressing by using a screw folding machine to obtain filtered water.
S2: adding a sulfuric acid solution with the mass fraction of 65% into the filtered water obtained in the step S1, adjusting the pH value to 2.07, adding 21mg/L potassium permanganate, uniformly stirring, and standing for 20 hours.
S3: and (3) under the condition of continuous stirring, adding 30mg/L of active carbon into the water obtained in the step (S2), stirring for 90min, adding barium carbonate, adjusting the pH value to 7.23, and then passing through a secondary filtering system of a bag filter (the filtering precision is 1 mu m) and a filter element filter (the filtering precision is 0.45 mu m), wherein the effluent is the water body after the treatment is finished.
Example 3
The method for deodorizing steam condensate in the autoclave in the calcium silicate board production process provided by the embodiment comprises the following steps:
s1: adding activated clay with the dosage of 5.2g/L into steam condensate water to be treated, stirring for 90min, and performing filter pressing by using a screw folding machine to obtain filtered water.
S2: adding a sulfuric acid solution with the mass fraction of 65% into the filtered water obtained in the step S1, adjusting the pH value to 2.59, adding 30mg/L potassium permanganate, uniformly stirring, and standing for 20 hours.
S3: and (3) under the condition of continuous stirring, adding 42mg/L of active carbon into the water obtained in the step (S2), stirring for 90min, adding calcium hydroxide, adjusting the pH value to 7.09, and then passing through a secondary filtering system of a bag filter (the filtering precision is 3 mu m) and a filter element filter (the filtering precision is 0.45 mu m), wherein the effluent is the water body after the treatment is finished.
Example 4
The method for deodorizing steam condensate in the autoclave in the calcium silicate board production process provided by the embodiment comprises the following steps:
s1: adding 17.5g/L activated clay into the steam condensate water to be treated, stirring for 60min, and performing pressure filtration by using a screw folding machine to obtain filtered water.
S2: adding a sulfuric acid solution with the mass fraction of 65% into the filtered water obtained in the step S1, adjusting the pH value to 1.87, adding 35mg/L potassium permanganate, uniformly stirring, and standing for 12 hours.
S3: and (3) under the condition of continuous stirring, adding 25mg/L of activated carbon into the water obtained in the step (S2), stirring for 120min, adding calcium oxide, adjusting the pH value to 6.88, and then passing through a secondary filtering system of a bag filter (with the filtering precision of 5 microns) and a filter element filter (with the filtering precision of 0.45 microns), wherein the effluent is the water body after the treatment is finished.
Example 5
The method for deodorizing steam condensate in the autoclave in the calcium silicate board production process provided by the embodiment comprises the following steps:
s1: adding activated clay with the dosage of 15g/L into steam condensate water to be treated, stirring for 60min, and performing filter pressing by using a screw folding machine to obtain filtered water.
S2: adding a sulfuric acid solution with the mass fraction of 65% into the filtered water obtained in the step S1, adjusting the pH value to 2.28, adding potassium permanganate with the dosage of 18mg/L, uniformly stirring, and standing for 24 hours.
S3: and (3) under the condition of continuous stirring, adding 32mg/L of activated carbon into the water obtained in the step (S2), stirring for 150min, adding calcium oxide, adjusting the pH value to 7.71, and then passing through a secondary filtering system of a bag filter (the filtering precision is 3 mu m) and a filter element filter (the filtering precision is 0.45 mu m), wherein the effluent is the water body after the treatment is finished.
Comparative example 1
The deodorization method for the steam condensate water of the autoclave in the production process of the calcium silicate board comprises the following steps:
s1: adding activated carbon with the dosage of 15.3g/L into steam condensate water to be treated, stirring for 75min, and filtering with a bag filter (the filtering precision is 1 μm) to obtain filtered water.
S2: adding a sulfuric acid solution with the mass fraction of 65% into the filtered water obtained in the step S1, adjusting the pH value to 2.01, adding 45mg/L potassium permanganate, uniformly stirring, and standing for 24 hours.
S3: under the condition of continuous stirring, adding activated clay with the dosage of 15g/L into the water obtained in the step S2, stirring for 120min, slowly adding barium carbonate, adjusting the pH value to 7.48, then performing filter pressing by using a screw folding machine, and then performing filter element filtering (the filtering precision is 0.45 mu m) on the water, wherein the effluent is the water body after the treatment is finished.
Table 2 shows the water quality data before and after the steam condensate water treatment of the steam curing kettles of examples 1-5 and comparative example 1. Wherein, the water quality data of the filtered water in the step S1 and the water discharged in the step S3 are respectively listed. The COD removal rate or odor threshold removal rate is calculated using the following formula:
in the formula, E-COD removal rate or odor threshold removal rate;
c, COD value (mg/L) or odor threshold value before treatment of steam condensate in the still kettle;
Cethe COD value (mg/L) or the odor threshold value of the steam condensate water of the still kettle after treatment;
TABLE 2 Water quality data before and after steam condensate treatment of steam kettles of examples 1 to 5 and reference 1
As can be seen from the above table, the deodorization threshold values of the steam condensate of the steam curing kettles in the embodiments 1 to 5 of the present invention all reach more than 85%, wherein the best effect of the treatment scheme described in the embodiment 1 is the best embodiment of the present invention. And in the comparative example 1, the treatment cost is increased (the amount of the active carbon is increased), the deodorization threshold value is not more than 85%, and the treated steam condensate water of the steam curing kettle is reused in the flocculant dissolving process, so that the prepared calcium silicate board finished product has no special odor and is easy to accept.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (7)
1. A deodorization method of steam condensate water of an autoclave in the production process of calcium silicate boards is characterized by comprising the following steps:
s1: adding activated clay with the dosage of 5-20g/L into steam condensate water to be treated, uniformly mixing, and filtering to obtain filtered water;
s2: adding a sulfuric acid solution into the filtered water obtained in the step S1, adjusting the pH value to 1-3, adding 15-40 mg/L potassium permanganate, uniformly stirring, and standing to obtain a mixed solution;
s3: and (4) under the stirring state, adding 20-50 mg/L of activated carbon into the mixed solution obtained in the step S2, uniformly mixing, adding a neutralizing agent, adjusting the pH value to 6-8, and filtering to obtain the effluent, namely the treated water body.
2. The method for deodorizing steam condensate in an autoclave during the production of a calcium silicate board as claimed in claim 1, wherein: the mass fraction of the sulfuric acid solution of S2 is 48-98%.
3. The method for deodorizing steam condensate in an autoclave during the production of a calcium silicate board as claimed in claim 1, wherein: s1, uniformly mixing for 30-90 min; s2, the standing time is more than 10 h; s3, the time for mixing evenly is 90-150 min.
4. The method for deodorizing steam condensate in an autoclave during the production of a calcium silicate board as claimed in claim 1, wherein: and S1, filtering, namely, uniformly mixing, and performing pressure filtration by using a screw folding machine to obtain filtered water.
5. The method for deodorizing steam condensate in an autoclave during the production of a calcium silicate board as claimed in claim 1, wherein: s3 the neutralizing agent is at least one of calcium oxide, calcium hydroxide, barium oxide, barium hydroxide and barium carbonate.
6. The method for deodorizing steam condensate in the autoclave in the calcium silicate board production process according to any one of claims 1 to 5, characterized in that: s3, filtering is carried out by using a filter bag type filter; or a two-stage filtration system using a bag filter and a cartridge filter.
7. The method for deodorizing steam condensate in an autoclave during the production of calcium silicate boards as claimed in claim 6, wherein: the filtering precision range of the filter bag type filter is 0.5-5 mu m; the filter precision range of the filter element filter is 0.20-0.65 mu m.
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