CN114149128A - Industrial wastewater treatment method - Google Patents
Industrial wastewater treatment method Download PDFInfo
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- CN114149128A CN114149128A CN202111461286.XA CN202111461286A CN114149128A CN 114149128 A CN114149128 A CN 114149128A CN 202111461286 A CN202111461286 A CN 202111461286A CN 114149128 A CN114149128 A CN 114149128A
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- industrial wastewater
- wastewater treatment
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
Abstract
The invention relates to the technical field of wastewater treatment, in particular to an industrial wastewater treatment method. The method comprises the following steps: the method comprises the following steps: mixing the acidic wastewater and the alkaline wastewater, and adjusting the pH value of the wastewater to 7; step two: heating cold water by utilizing the heat release of acid-base neutralization; step three: adding a flocculating agent into the neutralized wastewater to form primary purified wastewater; step four: filtering the primary purified sewage to take out flocculates in the primary purified sewage to form secondary purified sewage; step five: and (4) carrying out cyclone separation on the secondary purified sewage to obtain sewage without solid impurities. Has the advantage of accelerating the flocculation of industrial sewage.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to an industrial wastewater treatment method.
Background
The industrial wastewater can be treated by three ways, namely a physical method, a chemical method and a biological method: 1. physical treatment, which is mainly carried out by mechanical means, is the simplest of three and relatively inexpensive, usually by means of precipitation filtration, heat exchange and combustion. 2. The chemical treatment method is to add chemical substances into industrial wastewater to perform certain chemical reaction with pollutant components to generate substances harmless to human bodies and nature or colloidal feathers so as to remove impurities in the water, wherein the added chemical substances are acid-base agents, chlorine, ozone treatment, coagulating sedimentation and the like. 3. Biological treatment is the most common method in industrial wastewater treatment, and biological treatment is used for decomposing organic matters and impurities in water into harmless and pollution-free simple compounds. When the method is used for industrial wastewater treatment, a plurality of treatment units are combined with one another to achieve effective treatment. But now the flocculation rate for industrial sewage is slow.
Disclosure of Invention
The invention aims to provide an industrial wastewater treatment method which has the advantage of accelerating flocculation of industrial wastewater.
The purpose of the invention is realized by the following technical scheme:
a method for treating industrial wastewater, comprising the steps of:
the method comprises the following steps: mixing the acidic wastewater and the alkaline wastewater, and adjusting the pH value of the wastewater to 7;
step two: heating cold water by utilizing the heat release of acid-base neutralization;
step three: adding a flocculating agent into the neutralized wastewater to form primary purified wastewater;
step four: filtering the primary purified sewage to take out flocculates in the primary purified sewage to form secondary purified sewage;
step five: and (4) carrying out cyclone separation on the secondary purified sewage to obtain sewage without solid impurities.
The industrial waste water treating method also uses one industrial waste water treating apparatus, which includes one heat utilizing tank with two waste water inlet pipes, one neutralizing tank contacting the heat utilizing tank, one discharging pipe connected to the neutralizing tank, one circulating pipe connected to the heat utilizing tank, and one waste water inlet pipe.
And a pump is arranged between the neutralization tank and the discharge pipe.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a flow chart of the present invention;
FIG. 2 is an overall view of the present invention;
FIG. 3 is a neutralization tank of the present invention;
FIG. 4 is a cross-sectional view of the neutralization tank of the present invention;
FIG. 5 is a filter box of the present invention;
FIG. 6 is a flocculation tank of the present invention;
FIG. 7 is a cross baffle of the present invention;
FIG. 8 is a view of the attachment of a flocculation tank and a transverse baffle of the present invention;
FIG. 9 is a swirler of the present invention;
fig. 10 is a junction box of the present invention.
Detailed Description
A method for treating industrial wastewater, comprising the steps of:
the method comprises the following steps: mixing the acidic wastewater and the alkaline wastewater, and adjusting the proportion of the acidic wastewater and the alkaline wastewater to adjust the ph value of the finally generated wastewater to 7;
step two: in industrial production, a large amount of sulfuric acid and sodium hydroxide are used, and cold water is heated by utilizing heat release of acid-base neutralization reaction after acid wastewater and alkaline wastewater are mixed;
step three: adding a flocculating agent into the neutralized wastewater to form primary purified wastewater;
step four: filtering the primary purified sewage to take out flocculates in the primary purified sewage to form secondary purified sewage;
step five: and (4) carrying out cyclone separation on the secondary purified sewage to obtain sewage without solid impurities.
The neutralization tank section can perform an exemplary working process of acid wastewater and alkaline wastewater neutralization with reference to fig. 2 to 4:
in the industrial wastewater, a certain acid and alkali are often used in the production, wherein sulfuric acid and hydrochloric acid are mainly used as the main acid, sodium hydroxide is mainly used as the main alkali, and the acid and alkali are diluted and discharged along with water flow, so that an industrial wastewater treatment method is provided, and an industrial wastewater treatment device is also used, the device comprises a heat utilization tank 11, a neutralization tank 12, a discharge pipe 13, circulating pipes 14 and wastewater inlet pipes 15, two wastewater inlet pipes 15 are arranged on the neutralization tank 12, the neutralization tank 12 is in surface contact with the heat utilization tank 11, two circulating pipes 14 are fixedly connected to the heat utilization tank 11, the discharge pipe 13 is fixedly connected to the neutralization tank 12, acidic and alkaline sewage are respectively connected through the two inlet pipes 15, the neutralization tank 12 is used as a neutralization reaction chamber, cold water is introduced through one circulating pipe 14, the heat generated in neutralization and discharge is absorbed through the cold water, then hot water is discharged through the other circulating pipe 14, and then the hot water can be used in an industrial process, when the ph of the acidic and alkaline waste water neutralized is 6, a pump is provided between the neutralization tank 12 and the discharge pipe 13, and the waste water is pumped out through the discharge pipe 13 and transported to be treated next.
The flocculation tank section can refer to fig. 6 for an exemplary working process of the flocculation operation of the neutralized sewage:
the device also comprises a flocculation tank 31, a driving motor 32 and transmission gears 33, wherein the driving motor 32 is fixedly connected to the upper end of the flocculation tank 31, the transmission gears 33 are fixedly connected to the output shaft of the driving motor 32, the two transmission gears 33 are in meshed transmission, the driving motor 32 is started to drive the transmission gears 33 at the upper end of the output shaft to rotate so as to play a driving role, and the neutralized sewage enters the flocculation tank 31 to carry out the next flocculation operation.
The agitator section may perform an exemplary work process for the stepwise addition of flocculants with reference to fig. 6:
the device also comprises a stirring frame 34 and a receiving box 35, wherein the upper end of the stirring frame 34 is provided with a plurality of receiving boxes 35, a transmission gear 33 is fixedly connected onto the stirring frame 34, the stirring frame 34 rotates in the flocculation box 31, the transmission gear 33 connected onto the output shaft of the driving motor 32 rotates to drive the stirring frame 34 fixedly connected onto the transmission gear 33 to rotate, the stirring frame 34 rotates and simultaneously receives a flocculation agent through the receiving box 35, and the flocculation agent is added through an external pipeline arranged on the receiving box 35.
This crosspiece portion can be used for an exemplary working process of adding the flocculating agent while stirring, with reference to fig. 7 and 8:
solid impurity adopts manual spreading flocculating agent usually to the industrial sewage in traditional, but the flocculation process is comparatively consuming time, consequently the device is still including the connecting plate 41, add pipe 42, horizontal baffle 43 and liquid outlet 44, the rigid coupling has a plurality of horizontal baffles 43 between connecting plate 41 and the interpolation pipe 42, all be provided with liquid outlet 44 on a plurality of horizontal baffles 43, the rigid coupling has a plurality of connecting plates 41 and a plurality of interpolation pipe 42 on the stirring frame 34, a plurality of interpolation pipes 42 all communicate with accept the case 35, can all drive a plurality of connecting plates of connection above that and rotate when stirring frame 34 rotates, stir sewage through a plurality of horizontal baffles 43, in the stirring, make flocculating agent progressively broadcast through a plurality of liquid outlets 44, accelerate the flocculation to solid impurity in the sewage, sewage through the flocculation is once purified sewage.
The filter tank section may perform an exemplary operation of filtering the primary purified sewage and increasing the flow rate of the sewage with reference to fig. 2 and 5:
the device also comprises a filter box 21, a communicating pipe 22 and an accelerating draught pipe 23, wherein the communicating pipe 22 is fixedly connected on the filter box 21, an accelerating pump is arranged between the accelerating draught pipe 23 and the filter box 21, a collecting pipe is arranged at the upper end of the filter box 21, a pH detector is arranged in the collecting pipe, which can monitor the pH value of the primary purified sewage in the filter box 21 in real time, prevent the pH value of the primary purified sewage from not reaching the standard and causing environmental pollution, the height of the filter box 21 on the vertical position is increased through a support frame, through in going into the rose box 21 with once purifying sewage pump, be provided with multilayer active carbon in the rose box 21 and can filter the once purifying sewage that gets into, filter the floccule that forms and form secondary purification sewage, later carry out the propelling movement by the pump between acceleration draught tube 23 and the rose box 21, through the pump and accelerate draught tube 23 with higher speed, can make the secondary purify sewage along the quick outflow of acceleration draught tube 23.
The cyclone part can be used for an exemplary working process of separating and discharging fine solid particles in secondary purified sewage by referring to fig. 2 and 9:
the device also comprises a cyclone 51, a support frame 52 and a liquid storage chamber 53, wherein the support frame 52 is fixedly connected to the bottom of the cyclone 51, the liquid storage chamber 53 is communicated with the cyclone 51 through a pipeline, and the cyclone 51 is fixedly connected to the acceleration draft tube 23. The bottom of the cyclone 51 is provided with a valve, and the accelerating draft tube 23 can ensure that the secondary purified sewage enters along the direction tangential to the radial direction of the cyclone 51 at an outflow speed so as to ensure that the cyclone generates strong three-dimensional elliptic strong-rotation shearing turbulent flow motion. Because the particle size difference exists between the coarse particles and the fine particles, the coarse particles and the fine particles are subjected to different sizes of centrifugal force, centripetal buoyancy, fluid drag force and the like, and are subjected to centrifugal sedimentation, solid particles are discharged from the bottom of the cyclone 51, liquid is discharged from an upper end pipe of the cyclone 51, and the speed of discharging the solid particles is controlled by adjusting the opening and closing degree of a valve arranged at the bottom of the cyclone 51.
The receiving box section can refer to fig. 2 and 10 for an exemplary operation of receiving fine solid particles separated by the cyclone:
the device further comprises a receiving box 61 and an opening and closing door 62, wherein the opening and closing door 62 rotates on the receiving box 61, the receiving box 61 is located right below the cyclone 51, a sealing rubber strip is arranged between the opening and closing door 62 and the receiving box 61, a connecting shaft is arranged at the upper end of the opening and closing door 62, and the opening and closing door 62 is guaranteed to rotate on the receiving box 61 through the connecting shaft.
Claims (10)
1. A method for treating industrial wastewater, which is characterized by comprising the following steps:
the method comprises the following steps: mixing the acidic wastewater and the alkaline wastewater, and adjusting the pH value of the wastewater to 7;
step two: heating cold water by utilizing the heat release of acid-base neutralization;
step three: adding a flocculating agent into the neutralized wastewater to form primary purified wastewater;
step four: filtering the primary purified sewage to take out flocculates in the primary purified sewage to form secondary purified sewage;
step five: and carrying out cyclone separation on the secondary purified sewage to obtain the sewage without solid impurities.
2. The industrial wastewater treatment method according to claim 1, characterized in that: the device comprises a heat utilization box (11), a neutralization box (12), a discharge pipe (13), a circulating pipe (14) and a waste water inlet pipe (15), wherein the neutralization box (12) is provided with the two waste water inlet pipes (15), the neutralization box (12) is in surface contact with the heat utilization box (11), the heat utilization box (11) is fixedly connected with the two circulating pipes (14), and the discharge pipe (13) is fixedly connected to the neutralization box (12).
3. The industrial wastewater treatment method according to claim 2, characterized in that: a pump is arranged between the neutralization tank (12) and the discharge pipe (13).
4. The industrial wastewater treatment method according to claim 2, characterized in that: the device also comprises a flocculation box (31), a driving motor (32) and a transmission gear (33), wherein the driving motor (32) is fixedly connected to the upper end of the flocculation box (31), the transmission gear (33) is fixedly connected to an output shaft of the driving motor (32), and the two transmission gears (33) are in meshing transmission.
5. The industrial wastewater treatment method according to claim 4, characterized in that: the device also comprises a stirring frame (34) and a receiving box (35), wherein the upper end of the stirring frame (34) is provided with a plurality of receiving boxes (35), the stirring frame (34) is provided with a transmission gear (33), and the stirring frame (34) rotates in the flocculation box (31).
6. The industrial wastewater treatment method according to claim 5, characterized in that: the device still includes connecting plate (41), adds pipe (42), horizontal baffle (43) and liquid outlet (44), and the rigid coupling has a plurality of horizontal baffles (43) between connecting plate (41) and the interpolation pipe (42), all is provided with liquid outlet (44) on a plurality of horizontal baffles (43), and the rigid coupling has a plurality of connecting plates (41) and a plurality of interpolation pipe (42) on stirring frame (34), and a plurality of interpolation pipe (42) all communicate with accept box (35).
7. The industrial wastewater treatment method according to claim 6, characterized in that: the device also comprises a filter box (21), a communicating pipe (22) and an accelerating draft pipe (23), wherein the communicating pipe (22) is fixedly connected to the filter box (21), an accelerating pump is arranged between the accelerating draft pipe (23) and the filter box (21), and a collecting pipe is arranged at the upper end of the filter box (21).
8. The industrial wastewater treatment method according to claim 7, characterized in that: the device also comprises a cyclone (51), a support frame (52) and a liquid storage chamber (53), wherein the support frame (52) is fixedly connected to the bottom of the cyclone (51), the liquid storage chamber (53) is communicated with the cyclone (51) through a pipeline, and the cyclone (51) is fixedly connected to the acceleration draft tube (23).
9. The industrial wastewater treatment method according to claim 8, characterized in that: the bottom of the cyclone (51) is provided with a valve.
10. The industrial wastewater treatment method according to claim 9, characterized in that: the device also comprises a receiving box (61) and an opening and closing door (62), wherein the opening and closing door (62) rotates on the receiving box (61), and the receiving box (61) is positioned right below the cyclone (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111461286.XA CN114149128A (en) | 2021-12-03 | 2021-12-03 | Industrial wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111461286.XA CN114149128A (en) | 2021-12-03 | 2021-12-03 | Industrial wastewater treatment method |
Publications (1)
| Publication Number | Publication Date |
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| CN114149128A true CN114149128A (en) | 2022-03-08 |
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| CN202111461286.XA Pending CN114149128A (en) | 2021-12-03 | 2021-12-03 | Industrial wastewater treatment method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170036499A (en) * | 2015-09-24 | 2017-04-03 | 김종택 | Method and device for cyclic utilizing processing of designated waste |
| CN206345710U (en) * | 2016-12-20 | 2017-07-21 | 山东华通环境科技股份有限公司 | A kind of flocculant agitating device |
| CN108675568A (en) * | 2018-07-13 | 2018-10-19 | 苏州爱源环境工程技术服务有限公司 | A kind of Lithium Battery Industry waste water purification system |
| CN209010209U (en) * | 2018-08-28 | 2019-06-21 | 南京中船绿洲机器有限公司 | Ship tail gas desulfurization water treatment facilities |
| CN110655256A (en) * | 2019-10-14 | 2020-01-07 | 宁波市奉化日之升贸易有限公司 | Method for treating acidic wastewater and alkaline wastewater |
| CN211367085U (en) * | 2019-09-29 | 2020-08-28 | 内蒙古众元测试技术有限公司 | Laboratory waste acid neutralization treatment device |
-
2021
- 2021-12-03 CN CN202111461286.XA patent/CN114149128A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170036499A (en) * | 2015-09-24 | 2017-04-03 | 김종택 | Method and device for cyclic utilizing processing of designated waste |
| CN206345710U (en) * | 2016-12-20 | 2017-07-21 | 山东华通环境科技股份有限公司 | A kind of flocculant agitating device |
| CN108675568A (en) * | 2018-07-13 | 2018-10-19 | 苏州爱源环境工程技术服务有限公司 | A kind of Lithium Battery Industry waste water purification system |
| CN209010209U (en) * | 2018-08-28 | 2019-06-21 | 南京中船绿洲机器有限公司 | Ship tail gas desulfurization water treatment facilities |
| CN211367085U (en) * | 2019-09-29 | 2020-08-28 | 内蒙古众元测试技术有限公司 | Laboratory waste acid neutralization treatment device |
| CN110655256A (en) * | 2019-10-14 | 2020-01-07 | 宁波市奉化日之升贸易有限公司 | Method for treating acidic wastewater and alkaline wastewater |
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