CN110590101A - Energy-saving and time-saving sludge reduction method by using homogenizer with ozone - Google Patents
Energy-saving and time-saving sludge reduction method by using homogenizer with ozone Download PDFInfo
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- CN110590101A CN110590101A CN201910864318.7A CN201910864318A CN110590101A CN 110590101 A CN110590101 A CN 110590101A CN 201910864318 A CN201910864318 A CN 201910864318A CN 110590101 A CN110590101 A CN 110590101A
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- sludge
- homogenizer
- ozone
- saving
- sludge reduction
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
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- 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)
- Treatment Of Sludge (AREA)
Abstract
An energy-saving and time-saving sludge reduction method by using a homogenizer in combination with ozone, at least comprising the following steps: providing a homogenizer; providing an ozone reactor for generating ozone; and a sludge reduction treatment step for sludge by using the homogenizer and the ozone at the same time. The sludge reduction method can improve the sludge treatment efficiency.
Description
Technical Field
The present invention relates to a method for sludge reduction, and more particularly to a method for energy and time saving sludge reduction by using a homogenizer in combination with ozone.
Background
The amount of mud pivot now being greater than the amount of available tooling that can be buried results in a large increase in the amount of mud per year. With increasing importance of on water pollution, processors effective at respective end sludge have had.
Chinese patent application publication CN101481191A discloses a sewage treatment method for sludge reflux digestion and reduction, in which excess sludge is returned to an anaerobic sedimentation tank and accumulated in a sludge settling zone at the lower part of the anaerobic sedimentation tank for a long time so as to digest and reduce the sludge, sewage is fed through the anaerobic sedimentation tank and then is treated to obtain purified water and excess sludge, and undigested sludge needs to be periodically cleaned and fished.
U.S. patent application publication No. 2002/0030003A1 discloses an activated sludge sewage treatment system and method in which sewage is treated with sludge in a contact tank, then the sludge and water are separated in a solid-liquid separator, the separated sludge is mixed with a portion of the sewage in a digester and aerated to reduce sludge digestion, and the aerated sludge-water mixture is partially returned to the contact tank and partially discharged.
The traditional activated sludge process also has the following disadvantages: (1) the biological concentration in the aeration tank is low; (2) the water quality and water quantity impact load resistance is poor, and the operation is not stable enough; (3) sludge bulking is easy to generate; (4) the sludge yield is high; (5) high capital construction and operation cost, large occupied area and the like.
In particular, the most remarkable problem of the existing biological sewage treatment process is the generation of a large amount of excess sludge. The cost of sludge treatment is abnormally high, and approximately accounts for 50 to 60 percent of the total construction and operation cost of a sewage treatment plant. The excess sludge requires the necessary disposal and thus increases the operating costs of the sewage treatment, while also limiting the choice of sludge treatment methods. The common sludge reduction method comprises a digestion method (including anaerobic digestion and aerobic digestion), sludge merging and aeration to reduce the sludge digestion, and aerated sludge-water mixed liquor is partially returned to the contact tank and partially discharged.
In view of the above, the existing sludge is mainly buried, but the landfill is saturated and the incineration is too expensive, so that the development of new sludge treatment method is still needed to solve the above problems.
Disclosure of Invention
Accordingly, the present invention is directed to an energy-saving and time-saving method for sludge reduction by using a homogenizer with ozone, so as to solve the disadvantages of the conventional sludge treatment method.
To achieve the above object, the present invention provides an energy-saving and time-saving sludge reduction method by using a homogenizer with ozone, which at least comprises the following steps: providing a homogenizer; providing an ozone reactor for generating ozone; and a sludge reduction treatment step for sludge by using the homogenizer and the ozone at the same time.
Wherein, in the step of sludge reduction treatment, the rotation speed of the homogenizer ranges from 5,000 rpm to 9,000 rpm, and the homopouenin is a new sperm machine industry component Limited type HM-0025 homopouenin.
Wherein, in the sludge reduction treatment step, the amount of ozone is substantially 0.05 g/gMLSS.
Wherein the treatment time of the sludge reduction treatment step is between 15 minutes and 75 minutes.
Wherein the sludge reduction rate of the sludge reduction treatment step is between 31 and 59 percent.
Wherein, in the sludge reduction treatment step, the rotation speed of the homogenizer is substantially 8,000 r/min, the amount of ozone is substantially 0.05g/g MLSS, the treatment time is substantially 60 minutes, and the sludge reduction rate is 57%.
Wherein the organic matter content of the sludge is substantially higher than 87%.
Wherein the organic matter content of the sludge is substantially 87.2%, and the pH value is 7.13.
In view of the above, the energy-saving and time-saving sludge reduction method using ozone in combination with a homogenizer according to the present invention has one or more of the following advantages:
(1) the energy-saving and time-saving sludge reduction method of the homogenizer matching with ozone can effectively improve the sludge treatment efficiency by matching the homogenizer with ozone to carry out the sludge reduction treatment step.
(2) The energy-saving and time-saving sludge reduction method of the homogenizer matching with ozone can optimally improve the sludge treatment efficiency by setting the homogenizer to be a proper rotating speed, matching with a proper amount of ozone and a proper reaction treatment time.
So that the manner in which the above recited features of the present invention can be understood and appreciated, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.
Drawings
FIG. 1 is a flow chart of the energy-saving and time-saving sludge reduction method of the homogenizer with ozone.
FIG. 2 is a schematic diagram of the apparatus used in the energy-saving and time-saving sludge reduction method using ozone in combination with a homogenizer according to the present invention.
Detailed Description
For the purpose of understanding the technical features, contents and advantages of the present invention and the effects achieved thereby, the present invention will be described in detail with reference to the accompanying drawings in the form of embodiments, wherein the drawings are provided for illustrative purposes and for supporting the specification, and are not necessarily to be construed as being true in scale and precise arrangement after the implementation of the present invention, and therefore, the scope of the present invention in practical implementation should not be read and limited by the scale and arrangement of the accompanying drawings. In addition, for the sake of easy understanding, the same components in the following embodiments are illustrated with the same reference numerals. The dimensional ratios of the components shown in the drawings are merely for convenience in explanation and are not intended to be limiting.
Furthermore, the words used throughout the specification and claims have the ordinary meaning as is usually accorded to each word or phrase in the art, in the context of this disclosure and in the context of particular integers, unless otherwise indicated. Certain terms used to describe the invention are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the invention.
Further, as used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms, i.e., meaning including, but not limited to.
Referring to fig. 1 and 2, fig. 1 is a flow chart of the energy-saving and time-saving sludge reduction method of the invention by using a homogenizer in combination with ozone, and fig. 2 is a schematic equipment chart of the energy-saving and time-saving sludge reduction method of the invention by using a homogenizer in combination with ozone. As shown in FIG. 1 and FIG. 2, the energy-saving and time-saving sludge reduction method of the present invention using ozone in combination with a homogenizer at least comprises the following steps S10 to S30. In step S10, a homogenizer 40 is provided. In step S20, an ozone reactor 50 is provided for generating ozone. In step S30, the sludge is subjected to the sludge reduction treatment step by the homogenizer 40 and ozone at the same time.
The present invention utilizes a homogenizer 40 and an ozone reactor 50 to perform sludge reduction treatment, wherein the homogenizer 40 is available from Shin-Kwang precision industry Ltd, for example, and has a model of HM-0025 homogenizer, for example. The operation speed of the homogenizer 40 may be controlled, for example, by a speed controller 60, which may adjust the rotation speed steplessly, the rotation speed (RPM) of the homogenizer 40 may range from 500 RPM to 11,000 RPM, and the rotation speed is preferably from 5,000 RPM to 9,000 RPM. Since the homogenizer 40 is prone to overheating at 8,000 rpm or more, the rotation speed is preferably 8,000 rpm without increasing the cost (e.g., adding a cooling device) and achieving a good sludge reduction rate.
The homogenizer 40 may be provided with, for example, a safety clamp 42, the safety clamp 42 being configured to hold a reaction vessel 44, the reaction vessel 44 being configured to receive the sludge to be reacted, and a rotor 46 of the homogenizer 40 extending into the reaction vessel 44 for homogenizing the sludge.
The ozone reactor 50 is exemplified by an ozone reactor available from Dean's Enterprise corporation Ltd, taiwan (Dean's Enterprise co., Ltd.), and is of a type such as OWA-1000 ozone machine, which can adjust the amount of ozone generation steplessly, and the amount of ozone generation is in the range of 0g/hr to 1g/hr, preferably 0.1g/hr to 1g/hr, and preferably 0.05g/g mlss. Wherein the ozone reactor 50 may be in communication with the homogenizer 40, for example. For example, ozone generated by the ozone reactor 50 can be introduced into the reaction vessel 44 through the gas line 52, so that the ozone can uniformly contact the sludge during the sludge reduction treatment process. In the present invention, the properties of the sludge are as follows: the mixture Suspended solid (MLSS) was 18,850mg/L, the mixture Volatile Suspended solid (MLVSS) was 16,433mg/L, MLVSS/MLSS (%) was 87.2, and the pH was 7.13. The organic matter content of the sludge is more than 87 percent, and the sludge is suitable for sludge reduction treatment.
The results of sludge reduction by the homogenizer at different rotating speeds in cooperation with ozone are shown in a table. Wherein the sludge amount is 200mL, the MLVSS/MLSS (%) of the sludge is 87.2, and the pH value is 7.13; the ozone amount of ozone was 0.05g/g MLSS. The sludge reduction treatment was carried out for 30 minutes by a homogenizer at different rotation speeds (5,000 rpm, 6,000 rpm, 7,000 rpm, 8,000 rpm, 9,000 rpm) and ozone introduction, and the sludge reduction rates were measured to be 24%, 34%, 38%, 43%, and 46%, respectively. Since the homogenizer tends to overheat when the rotation speed of the homogenizer is too high, the rotation speed of the homogenizer is preferably 8,000 rpm.
Table one:
the second table shows the result chart of sludge reduction by the homogenizer in combination with ozone for different reaction times. Wherein the sludge amount is 200mL, the MLVSS/MLSS (%) of the sludge is 87.2, and the pH value is 7.13; the ozone amount of the ozone is 0.05 g/gMLSS; the homogenizer rotation speed was 8,000 rpm, sludge reduction treatments were performed for 15 minutes, 30 minutes, 45 minutes, 60 minutes, and 75 minutes, and the sludge reduction rates were detected to be 31%, 43%, 52%, 57%, and 59%, respectively. From this graph, it can be seen that the sludge reduction of 57% was obtained at a reaction time of 60 minutes, and that the sludge reduction rate increased from 57% to 59% at a reaction time of 75 minutes, indicating that the reaction time was 60 minutes, which is preferable.
Table two:
| reaction time (minutes) | 15 | 30 | 45 | 60 | 75 |
| Sludge reduction rate (%) | 31 | 43 | 52 | 57 | 59 |
In addition, the invention further aims at various sludge reduction methods to compare the sludge reduction rate. Wherein the sludge amount is 200mL, the MLVSS/MLSS (%) of the sludge is 87.2, and the pH value is 7.13; the ozone amount of the ozone is 0.05 g/gMLSS; the rotating speed of the homogenizer is 8,000 revolutions per minute; the reaction time was 30 minutes. In detail, when the sludge was treated with ozone alone, the sludge reduction rate was 29%. When the homogenizer is used alone to treat the sludge, the sludge reduction rate is 18 percent. However, the present invention has a sludge reduction rate of 43% by using the ozone homogenizer in combination for treating the sludge. In contrast, the sludge reduction rate obtained by the method for sludge reduction using a homogenizer in combination with ozone according to the present invention can be increased by 1.48 times and 2.39 times, respectively, compared to the sludge reduction rate obtained by using ozone alone and a homogenizer alone, and the present invention can certainly improve the sludge treatment efficiency.
In summary, the energy-saving and time-saving sludge reduction method of the invention, which combines the homogenizer with ozone, can effectively improve the sludge treatment efficiency by performing the sludge reduction treatment step by combining the homogenizer with ozone. The energy-saving and time-saving sludge reduction method of the homogenizer matching with ozone can optimally improve the sludge treatment efficiency by setting the homogenizer to be a proper rotating speed, matching with a proper amount of ozone and a proper reaction treatment time.
The foregoing is by way of example only, and not limiting. It is intended that all equivalent modifications or variations without departing from the spirit and scope of the present invention shall be included in the appended claims.
Description of the reference numerals
S10, S20, S30: step 46: rotating member
40: the homogenizer 50: ozone reactor
42: the safety clamp 52: gas pipeline
44: reaction vessel 60: speed controller
Claims (7)
1. An energy-saving and time-saving sludge reduction method by using a homogenizer in combination with ozone, at least comprising the following steps:
providing a homogenizer;
providing an ozone reactor for generating ozone; and
and simultaneously carrying out sludge reduction treatment on sludge by using the homogenizer and the ozone, wherein in the sludge reduction treatment step, the rotating speed of the homogenizer is between 5,000 rpm and 9,000 rpm, and the homogenizer is a model HM-0025 homogenizer of New optical polishing machine industry GmbH.
2. The energy and time saving sludge reduction method of homogenizer with ozone as claimed in claim 1, wherein in the sludge reduction treatment step, the amount of ozone is 0.05g/g MLSS.
3. The energy-saving and time-saving sludge-reduction method of homogenizer with ozone as described in claim 1, wherein the treatment time of the sludge-reduction treatment step is between 15 minutes and 75 minutes.
4. The energy-saving and time-saving sludge reduction method of homogenizer with ozone as claimed in claim 1, wherein the sludge reduction rate of the sludge reduction treatment step is between 31% and 59%.
5. The energy-saving and time-saving sludge reduction method of homogenizer with ozone as claimed in claim 1, wherein in the sludge reduction treatment step, the rotation speed of the homogenizer is 8,000 rpm, the amount of ozone is 0.05g/g MLSS, the treatment time is 60 minutes, and the sludge reduction rate is 57%.
6. The energy and time saving sludge reduction method of homogenizer with ozone as claimed in claim 1, wherein the organic matter content of the sludge is higher than 87%.
7. The energy and time saving sludge reduction method with ozone in combination with homogenizer of claim 6, wherein the organic matter content of the sludge is 87.2% and the pH value is 7.13.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910864318.7A CN110590101A (en) | 2019-09-12 | 2019-09-12 | Energy-saving and time-saving sludge reduction method by using homogenizer with ozone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910864318.7A CN110590101A (en) | 2019-09-12 | 2019-09-12 | Energy-saving and time-saving sludge reduction method by using homogenizer with ozone |
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| CN110590101A true CN110590101A (en) | 2019-12-20 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708937A (en) * | 2009-11-27 | 2010-05-19 | 南京工业大学 | Method for promoting sludge to be reduced by ozone |
| CN204079712U (en) * | 2014-09-24 | 2015-01-07 | 上海城市水资源开发利用国家工程中心有限公司 | A kind of sludge ozone oxidant deweighting device |
| WO2015114912A1 (en) * | 2014-01-29 | 2015-08-06 | 三菱電機株式会社 | Phosphorus collection apparatus and phosphorus collection method |
| CN105110583A (en) * | 2015-07-30 | 2015-12-02 | 北京林业大学 | Method for disintegrating residual sludge to raise hydrolytic acidification efficiency by high pressure homogenization technology |
| CN105601072A (en) * | 2016-03-15 | 2016-05-25 | 北京林业大学 | Method for improving sewage biological denitrification effect by using high-pressure homogeneous cracked anaerobic hydrolysate of residual sludge as denitrification carbon source |
| CN206814616U (en) * | 2017-06-08 | 2017-12-29 | 长沙紫宸科技开发有限公司 | A kind of sludge modification homogenizer |
-
2019
- 2019-09-12 CN CN201910864318.7A patent/CN110590101A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708937A (en) * | 2009-11-27 | 2010-05-19 | 南京工业大学 | Method for promoting sludge to be reduced by ozone |
| WO2015114912A1 (en) * | 2014-01-29 | 2015-08-06 | 三菱電機株式会社 | Phosphorus collection apparatus and phosphorus collection method |
| CN204079712U (en) * | 2014-09-24 | 2015-01-07 | 上海城市水资源开发利用国家工程中心有限公司 | A kind of sludge ozone oxidant deweighting device |
| CN105110583A (en) * | 2015-07-30 | 2015-12-02 | 北京林业大学 | Method for disintegrating residual sludge to raise hydrolytic acidification efficiency by high pressure homogenization technology |
| CN105601072A (en) * | 2016-03-15 | 2016-05-25 | 北京林业大学 | Method for improving sewage biological denitrification effect by using high-pressure homogeneous cracked anaerobic hydrolysate of residual sludge as denitrification carbon source |
| CN206814616U (en) * | 2017-06-08 | 2017-12-29 | 长沙紫宸科技开发有限公司 | A kind of sludge modification homogenizer |
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Application publication date: 20191220 |