CN211141733U - Circulating sewage treatment and recycling system - Google Patents
Circulating sewage treatment and recycling system Download PDFInfo
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- CN211141733U CN211141733U CN201921593968.4U CN201921593968U CN211141733U CN 211141733 U CN211141733 U CN 211141733U CN 201921593968 U CN201921593968 U CN 201921593968U CN 211141733 U CN211141733 U CN 211141733U
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Abstract
The utility model relates to a recycling system is handled to circulation blowdown water belongs to thermal power plant waste water treatment equipment technical field, has solved the organic matter that can't effectively get rid of among the prior art in the circulation blowdown, waste water reuse rate low grade technical problem. The utility model comprises a hydraulic cyclone, a primary settling tank, a lift pump, an organic matter settling tank, a buffer tank, a softened water tank, a neutralization tank, a PH indicator, a medicine storage tank, a reverse osmosis water tank, a solenoid valve, a sludge tank, a sludge collection pump and a plate-and-frame filter press; the hydrocyclone is used for removing oil in the circulating sewage, and the primary caisson is used for preliminarily carrying out solid-liquid separation on large-particle suspended matters in the wastewater; the organic matter settling tank, the buffer tank and the softening water tank are sequentially connected; and medicine storage tanks are arranged above the organic matter settling tank, the buffer tank and the softening water tank. The utility model discloses can effectively get rid of the organic matter in the circulating water blowdown, improve the waste water reuse rate.
Description
Technical Field
The utility model belongs to the technical field of thermal power plant's waste water treatment equipment, a circulation blowdown water treatment recycling system is related to.
Background
Along with intensive implementation of environmental protection policies such as 'water pollution prevention action plan' and 'pollution discharge permit', the limitation on the water taking and discharging quantity and the water discharging quality index of the thermal power plant is more and more strict, and the water resource cost is greatly increased by implementing a step-type water resource charging method in part of areas, so that the thermal power enterprises are forced to implement deep water saving and comprehensive wastewater treatment. The heat-engine plant is a large water-consuming household, the water consumption and the drainage amount of a circulating water system of the heat-engine plant account for 80-90% of the total water consumption and the total external discharge capacity of a circulating cooling type heat-engine plant, the standard operation of a newly-built heat-engine plant also puts higher requirements on water consumption indexes, and industrial wastewater and domestic sewage of the power plant are treated and recycled or discharged after reaching the standard.
At present, Ca in circulating water sewage2+、Mg2+High concentrations of total silicon, Total Phosphorus (TP), COD, Total Organic Carbon (TOC), etc. The efficiency of the traditional membrane recycling process (coagulation clarification and biological method) is greatly limited due to the organic matters in the circulating water sewage. Organic matters in the sewage are refractory organic matters, the biodegradability is very poor, the treatment is directly carried out by adopting a biological method, the removal effect of the organic matters is extremely poor, the biodegradability of the circulating water needs to be improved by advanced oxidation, but the process is complex and the engineering implementation difficulty is high; moreover, the hardness of the treated sewage is higher, and the direct discharge is easy to cause environmental pollution. In general, various oily wastewater generated in the mechanical operation process of a main plant area cannot be effectively treated; and the operation condition of the sewage treatment and recycling system is unsatisfactory, and part of the system cannot play an effective purification treatment role due to improper selection process and other reasons, so that great economic loss is caused, and the environment is polluted.
Disclosure of Invention
In view of the above analysis, the utility model relates to a be used for handling power plant's circulating water blowdown water treatment recycling system has solved among the prior art organic matter, the waste water rate of recovery low grade technical problem of can't effectively getting rid of in the circulating water blowdown.
The purpose of the utility model is mainly realized through the following technical scheme:
the utility model provides a circulating sewage treatment and recycling system, which comprises a hydrocyclone, a primary settling tank, a sewage discharge outlet, a lift pump, an organic matter settling tank, a buffer tank, a softened water tank, a neutralization tank, a medicine storage tank, a reverse osmosis water tank, a sludge pond and a liquid storage tank;
the primary caisson, the sewage outlet, the organic matter precipitation tank, the buffer tank, the softening water tank, the neutralization tank, the reverse osmosis water tank and the liquid storage tank are sequentially connected;
the primary caisson is provided with a hydrocyclone, and the lower part of the primary caisson is provided with an oil discharge port;
a lifting pump is arranged between the sewage outlet and the organic matter precipitation tank;
the primary settling tank, the organic matter settling tank, the buffer tank, the softening water tank, the neutralizing tank and the reverse osmosis water tank are all connected with the sludge tank in sequence.
In a possible design, the circulating sewage treatment and recycling system further comprises a pH indicator, a first electromagnetic valve, a second electromagnetic valve, a check valve, a sludge collection pump and a plate-and-frame filter press.
In one possible design, a first electromagnetic valve is arranged between the neutralization tank and the reverse osmosis water tank and is used for controlling the flow of the circulating sewage between the neutralization tank and the reverse osmosis water tank; a check valve is arranged between the reverse osmosis water tank and the liquid storage tank and used for controlling the circulating sewage to flow from the reverse osmosis water tank to the liquid storage tank and preventing the reverse flow.
In one possible design, the end of the reservoir is provided with a second solenoid valve for controlling the flow of circulating sewage between the reservoir and the external pipe.
In one possible design, a medicine storage tank is arranged above the organic matter settling tank, the buffer tank and the softening water tank.
In one possible design, a drug storage canister includes: a sulfuric acid storage tank, a ferric chloride storage tank, a NaOH storage tank, a Na2CO3 storage tank and a hydrogen chloride storage tank.
In one possible design, a pH indicator is provided on the neutralization tank.
In one possible design, the sludge tank, the sludge collection pump and the plate-and-frame filter press are connected in sequence.
In one possible design, the hydrocyclone is used for removing oil in the circulating sewage, the primary caisson is used for primarily carrying out solid-liquid separation on large suspended particles in the circulating sewage, and the plate-and-frame filter press is used for separating solid and liquid in the sludge tank.
In one possible design the reservoir is used to store treated recycled sewage.
The utility model discloses can realize one of following beneficial effect at least:
1. the utility model discloses a set up sulphuric acid liquid storage pot, can be with organic matter Ca in the waste water2+、Mg2+And the like, and redundant sulfuric acid can be neutralized by NaOH.
2. The utility model realizes the purpose of two-phase or multi-phase separation by arranging the hydrocyclone and utilizing the different magnitudes of centrifugal force, centripetal buoyancy and fluid drag force; the utility model discloses install the air supporting device additional on hydrocyclone, make hydrocyclone increase the gravity separation effect again on centrifugal separation's basis, even if small oil particle also can be separated out, improved water oil separating efficiency.
3. The utility model discloses a set up NaOH holding vessel and Na2CO3The storage tank can effectively remove acidic substances in the circulating sewage and can adjust the pH value.
4. The utility model discloses a set up sulphuric acid holding vessel, ferric chloride holding vessel, organic matter setting tank, can effectually get rid of the organic matter in the waste water.
The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.
Fig. 1 is a schematic structural view of a circulating sewage treatment and reuse system in embodiment 1.
Reference numerals:
1-a hydrocyclone; 2-primary caisson; 3-oil drain port; 4-a sewage draining outlet; 5-a lift pump; 6-organic matter settling tank; 7-sulfuric acid storage tank; 8-ferric chloride storage tank; 9-a buffer tank; 10-softening the water tank; 11-NaOH storage tank; 12-Na2CO3A storage tank; 13-a neutralization tank; 14-HCI storage tanks; 15-PH indictor; 16-a first solenoid valve; 17-a reverse osmosis water tank; 18-a check valve; 19-a liquid storage tank; 20-a second solenoid valve; 21-a sludge tank; 22-sludge collection pump; 23-plate and frame filter press.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
An object of the utility model is to provide a be used for handling power plant's circulation blowdown water treatment recycling system can effectively get rid of the organic matter in the circulation blowdown water, realizes the retrieval and utilization of waste water, improves the utilization ratio of waste water.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a circulation blowdown water treatment recycling system, includes hydrocyclone 1, primary caisson 2, drain 4, elevator pump 5, organic matter setting tank 6, buffer tank 9, softens water tank 10, neutralization tank 13, medicine holding vessel, reverse osmosis water tank 17, sludge impoundment 21, liquid reserve tank 19.
The primary caisson 2, the sewage outlet 4, the organic matter settling tank 6, the buffer tank 9, the softened water tank 10, the neutralization tank 13, the reverse osmosis water tank 17 and the liquid storage tank 19 are sequentially connected; the primary caisson 2 is provided with a hydrocyclone 1, and the lower part of the primary caisson 2 is provided with an oil discharge port 3; a lifting pump 5 is arranged between the sewage outlet 3 and the organic matter precipitation tank 2; the primary settling tank 2, the organic matter settling tank 6, the buffer tank 9, the softening water tank 10, the neutralizing tank 13 and the reverse osmosis water tank 17 are respectively connected with a sludge pond 21.
In one possible design, the recycling sewage treatment system further comprises a PH indicator 15, a first solenoid valve 16, a second solenoid valve 20, a check valve 18, a sludge collection pump 22 and a plate and frame filter press 23.
The left side of the circulating sewage treatment and recycling system is provided with a water filling port for connecting the wastewater to be treated into the treatment system and then into the hydrocyclone 1. The hydrocyclone 1 is connected with the primary settling tank 2 through a pipeline. The primary settling tank 2 is connected by piping to an organic matter settling tank 6 by means of a lift pump 5. The organic matter precipitation tank 6 is connected with the buffer tank 9, the softening water tank 10, the reverse osmosis water tank 17 and the liquid storage tank 19 in sequence through pipelines. The liquid storage tank 19 is connected with a boiler water supply pipeline and an ash flushing water pipeline, so that the cyclic utilization of the waste water of the power plant is realized. Different types of medicine storage tanks are arranged in the organic matter precipitation tank 6, the softening water tank 10 and the neutralization tank 13. The bottom of the hydrocyclone 1, the primary settling tank 2, the organic matter settling tank 6, the buffer tank 9, the softened water tank 10, the neutralization tank 13 and the reverse osmosis water tank 17 are all provided with pipelines to be connected with a sludge collecting pump 22, and finally discharged through a plate-and-frame filter press 23.
Example 1
The technical solution in the embodiment of the present invention will be described in detail below with reference to fig. 1, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, but not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a pair of embodiment: a circulating sewage treatment and recycling system is shown in the attached figure 1 of the specification and comprises a hydrocyclone 1, a primary settling tank 2, a sewage outlet 4, a lift pump 5, an organic matter settling tank 6, a buffer tank 9, a softening water tank 10, a neutralization tank 13, a medicine storage tank reverse osmosis water tank 17, a liquid storage tank 19 and a sludge tank 21.
Specifically, the primary caisson 2, the sewage discharge outlet 4, the organic matter precipitation tank 6, the buffer tank 2, the softening water tank 10, the neutralization tank 13, the reverse osmosis water tank 17 and the liquid storage tank 19 are sequentially connected.
The primary caisson 2 is provided with a hydrocyclone 1, and the lower part of the primary caisson 2 is provided with an oil discharge port 4; a lifting pump 5 is arranged between the sewage outlet 4 and the organic matter precipitation tank 6.
The primary settling tank 2, the organic matter settling tank 6, the buffer tank 9, the softening water tank 10, the neutralizing tank 13 and the reverse osmosis water tank 17 are all connected with a sludge pond 21 in sequence.
The circulating sewage treatment and recycling system further comprises a pH indicator 15, a first electromagnetic valve 16, a second electromagnetic valve 20, a check valve 18, a sludge collection pump 22 and a plate-and-frame filter press 23.
Medicine storage tanks are arranged above the organic matter precipitation tank 6, the buffer tank 9 and the softening water tank 10.
The medicine storage tank includes: sulfuric acid storage tank 7, ferric chloride storage tank 8, NaOH storage tank 11, Na2CO3 storage tank 12 and HCI storage tank 14.
A first electromagnetic valve 16 is arranged between the neutralization tank 13 and the reverse osmosis water tank 17 and is used for controlling the flow of the circulating sewage between the neutralization tank and the reverse osmosis water tank; a check valve 18 is arranged between the reverse osmosis water tank 17 and the liquid storage tank 19 and is used for controlling the circulating sewage to flow from the reverse osmosis water tank to the liquid storage tank and preventing the reverse flow; the end of the liquid storage tank 19 is provided with a second electromagnetic valve for controlling the flow of the circulating sewage between the liquid storage tank and an external pipeline.
A pH indicator is arranged on the neutralization box.
The sludge tank 21, the sludge collecting pump 22 and the plate-and-frame filter press 23 are connected in sequence.
The hydrocyclone 1 is used for removing oil in the circulating sewage, the primary settling tank 2 is used for primarily carrying out solid-liquid separation on large-particle suspended matters in the circulating sewage, and the plate-and-frame filter press 23 is used for separating solid and liquid in a sludge pool. The liquid storage tank 19 is used for storing the treated circulating sewage.
Specifically, the circulating sewage firstly passes through the hydrocyclone 1 to remove the oil in the water, so that the treatment effect of the subsequent process is prevented from being influenced, and meanwhile, the effect of collecting the sewage is achieved. Then the solid-liquid separation is carried out on the large particle suspended matters in the circulating sewage primarily through the primary caisson 2.
Specifically, the required medicine storage tanks are arranged above the organic matter precipitation tank 6, the buffer tank 9 and the softened water tank 10, and corresponding medicines are put in at proper time for treatment reaction. The concentrated slurry is delivered to a plate-and-frame filter press 22 through a delivery pipeline arranged at the bottom of the primary settling tank 2, the organic matter settling tank 6, the buffer tank 9 and the softened water tank 10 to be pressed to form solid waste.
Specifically, the organic matter precipitation tank 6, the buffer tank 9 and the softened water tank 10 are sequentially connected, and wastewater flows through the primary settling tank 4 and enters the organic matter precipitation tank 6 under the action of the lifting pump 5. The organic matter precipitation tank 6, the buffer tank 9 and the softened water tank 10 are all provided with a required medicine storage tank, and the dosing treatment is carried out at a proper time.
Specifically, process the utility model discloses the waste water that circulating water blowdown water treatment recycling system handled can be stored in liquid reserve tank 19, and this part of water can carry out recycle or can directly discharge outside the factory. The utility model discloses a second grade softens technology and effectively gets rid of the scale deposit nature material in the circulating water. NaOH-Na2CO3Can effectively remove Ca2+、Mg2+TP, TOC, full silicon and the like, and the water quality of the impurities meets the relevant requirements of ash flushing water and boiler make-up water.
Specifically, the utility model discloses circulating water blowdown water treatment recycling system's medicine holding vessel includes: sulfuric acid storage tank 7, ferric chloride storage tank 8, NaOH storage tank 11 and Na2CO3Storage tanks 12 and HCI storage tank 14.
Specifically, sulfuric acid and ferric chloride are added into the organic matter precipitation tank 6 from a sulfuric acid storage tank 7 and a ferric chloride storage tank 8 and stirred, the PH of the wastewater is adjusted to be 4.0-5.0, the organic matter removal effect is improved, and meanwhile, residual scale inhibitors and corrosion inhibitors in circulating water can be removed.
Specifically, NaOH is stored in a tank 11 and Na is added2CO3NaOH and Na are added into the softened water tank 10 by the storage tank 122CO3And stirring, and adjusting the pH value of the wastewater to be between 8.0 and 9.0, so that scaling substances in the circulating water can be effectively removed.
Specifically, HCI is fed into the neutralization tank 13 from the HCI storage tank 11 and stirred, and the PH of the wastewater is adjusted to be about 7.0, so that the whole wastewater is electrically neutral.
The utility model discloses circulating water blowdown water treatment recycling system handles circulating sewage through above-mentioned three processing unit, can effectually get rid of waste water organic matter, has realized the softening of waste water and to small impurity in the waste water, finally carries towards grey water, boiler supply water to realize the recovery and the recycling of waste water, effectively avoided environmental pollution.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A circulating sewage treatment and recycling system is characterized by comprising a hydrocyclone, a primary settling tank, a sewage outlet, a lift pump, an organic matter settling tank, a buffer tank, a softened water tank, a neutralization tank, a medicine storage tank, a reverse osmosis water tank, a sludge pool and a liquid storage tank;
the primary caisson, the sewage discharge outlet, the organic matter precipitation tank, the buffer tank, the softening water tank, the neutralization tank, the reverse osmosis water tank and the liquid storage tank are sequentially connected;
the primary caisson is provided with a hydrocyclone, and the lower part of the primary caisson is provided with an oil discharge port;
a lifting pump is arranged between the sewage outlet and the organic matter precipitation tank;
the primary settling tank, the organic matter settling tank, the buffer tank, the softening water tank, the neutralizing tank and the reverse osmosis water tank are all connected with the sludge tank in sequence.
2. The recycling system of claim 1, further comprising a pH indicator, a first solenoid valve, a second solenoid valve, a check valve, a sludge collection pump, and a plate and frame filter press.
3. The recycling system of claim 2, wherein a first solenoid valve is provided between the neutralization tank and the reverse osmosis water tank for controlling the flow of the recycled sewage between the neutralization tank and the reverse osmosis water tank; and a check valve is arranged between the reverse osmosis water tank and the liquid storage tank and used for controlling circulating sewage to flow from the reverse osmosis water tank to the liquid storage tank and preventing reverse flow.
4. The recycling system for treating recycled sewage according to claim 3, wherein a second solenoid valve is provided at the end of the liquid storage tank for controlling the flow of the recycled sewage between the liquid storage tank and the external pipe.
5. The recycling system of claim 1 or 2, wherein a drug storage tank is disposed above the organic matter settling tank, the buffer tank and the softened water tank.
6. The recycling system for recycling sewage disposal according to claim 5, wherein said chemical storage tank comprises: sulfuric acid storage tank, ferric chloride storage tank, NaOH storage tank and Na2CO3A storage tank and a hydrogen chloride storage tank.
7. The recycling system for treating the circulating sewage according to claim 2, wherein a pH indicator is arranged on the neutralizing tank.
8. The recycling system for treating the circulating sewage according to claim 2, wherein the sludge tank, the sludge collecting pump and the plate-and-frame filter press are connected in sequence.
9. The recycling system for treating the circulating sewage according to claim 2, wherein the hydrocyclone is used for removing oil in the circulating sewage, the primary settling tank is used for preliminarily performing solid-liquid separation on large suspended particles in the circulating sewage, and the plate-and-frame filter press is used for separating solid and liquid in a sludge tank.
10. The recycling system for recycling sewage disposal according to any one of claims 1 to 4 and 6 to 9, wherein the storage tank is used for storing the recycled sewage after disposal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921593968.4U CN211141733U (en) | 2019-09-24 | 2019-09-24 | Circulating sewage treatment and recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921593968.4U CN211141733U (en) | 2019-09-24 | 2019-09-24 | Circulating sewage treatment and recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211141733U true CN211141733U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921593968.4U Active CN211141733U (en) | 2019-09-24 | 2019-09-24 | Circulating sewage treatment and recycling system |
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|---|---|
| CN (1) | CN211141733U (en) |
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- 2019-09-24 CN CN201921593968.4U patent/CN211141733U/en active Active
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