CN114230041A - Zero release industrial waste water processing system - Google Patents
Zero release industrial waste water processing system Download PDFInfo
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- CN114230041A CN114230041A CN202111544141.6A CN202111544141A CN114230041A CN 114230041 A CN114230041 A CN 114230041A CN 202111544141 A CN202111544141 A CN 202111544141A CN 114230041 A CN114230041 A CN 114230041A
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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
- C02F1/52—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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
Abstract
The invention discloses a zero-discharge industrial wastewater treatment system in the technical field of cement pole embedded basic structures, which comprises a stirring clarification tank, wherein the input end of the stirring clarification tank is connected with a reclaimed water incoming pipeline, one path of the output end of the stirring clarification tank is communicated to a raw water tank through a raw water pump, the other path of the output end of the stirring clarification tank is communicated to a cooling tower through a circulating water replenishing pump, the system also comprises a water collecting tank and an industrial wastewater tank, the input end of the water collecting tank is connected with a rain drainage pipeline through a rain drainage pump, the output end of the industrial wastewater tank is sequentially communicated to the coagulating clarification tank and a filtering water tank through a wastewater lifting pump, the output end of the filtering water tank is connected with a clean water pump outlet main pipe through the filtering water pump, the clean water pump outlet main pipe is sequentially communicated to the input end of the circulating water replenishing pump through a water manual adjusting valve and a water replenishing stop valve, after the system is transformed, one water, the cascade use and the wastewater reuse are realized, the phenomenon of high quality and low use of water and the phenomenon of incapability of recycling after mixing and collecting are avoided.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a zero-emission industrial wastewater treatment system.
Background
The thermal power factory is the industrial water consumer, along with the gradual implementation of each item environmental protection policy, regulation of country, the environmental protection is supervised and is examined the dynamics and is constantly strengthened, also more and more strict to the restriction of displacement and drainage quality of water. In order to seriously implement national relevant policy and regulation, rain drainage, domestic sewage and industrial wastewater are scientifically and reasonably recycled, energy conservation and efficiency improvement are achieved, water is saved, emission is reduced, economic, environmental protection and social benefits of enterprises are improved, potential environmental hazards are thoroughly eliminated, and finally zero discharge of sewage of a thermal power plant is realized.
Based on the technical scheme, the invention designs a zero-discharge industrial wastewater treatment system to solve the problems.
Disclosure of Invention
The invention aims to provide a zero-emission industrial wastewater treatment system to solve the technical problem.
In order to realize the purpose, the invention provides the following technical scheme: the utility model provides a zero release industrial waste water processing system, includes the stirring clarification tank, the stirring clarification tank input is connected with the well water pipeline that comes, the output of stirring clarification tank is crossed the raw water pump on one road and is linked to former water tank, and another road passes through circulating water moisturizing pump and communicates to the cooling tower, still includes catch basin and industrial waste water pond, the input of catch basin is connected with rain drainage pipe through the rain drain pump, the output of industrial waste water pond communicates to coagulating clarification tank and filtering ponds in proper order through the waste water elevator pump, filtering ponds's output passes through filtering water pump and clean water pump export female union coupling, the clear water pump outlet female pipe loops through moisturizing manual regulation valve and moisturizing stop valve and communicates to the input of moisturizing pump.
Preferably, the output end of the stirring and clarifying tank is also provided with a channel communicated to a fire-fighting water tank.
Preferably, the cooling tower further comprises a cooling water circulation pipeline communicated from the bottom of the cooling tower to the top of the cooling tower to form an internal water circulation channel of the cooling tower.
Preferably, the output end of the water collecting tank is provided with a rain drainage outlet.
Preferably, the input end of the filtering water tank is also provided with a treated domestic water pipeline.
Preferably, the industrial wastewater pool comprises a regular wastewater pool and a non-regular wastewater pool, the non-regular wastewater pool is communicated with the regular wastewater pool through a wastewater communication pump, and the regular wastewater pool is communicated with the input end of the wastewater lifting pump.
Preferably, another bypass is arranged on the pipeline from the wastewater lift pump to the coagulation clarification tank and is directly communicated to the filter water tank.
Preferably, the input of coagulating and clarifying tank and the input of filtering water pond are provided with turbidity motorised valve and turbidity motorised valve up to standard respectively, and the output of waste water elevator pump is provided with online turbidity meter.
Compared with the prior art, the invention has the beneficial effects that:
(1) the production sewage is completely recycled, and the potential environmental hazard of sewage discharge is thoroughly solved.
(2) The high conductivity water in the clean water tank is supplemented in the circulating water tower, so that the fresh water can be saved by about 80m 3/h.
(3) The water replenishing of the regenerated water system to the circulating water is reduced by about 80m3/h, and the operating pressure of the regenerated water system is relieved.
(4) After the system is transformed, the problems that a user at the downstream of a clean water tank consumes less water, industrial wastewater cannot continuously run and overflows to a rain drainage tank to pollute the water quality of a rain drainage system are avoided.
(5) The recycling of the waste water in the plant area of the rain drainage pool is about 80m3/h, the pollution of industrial wastewater overflow water is avoided, the rain drainage is completely recycled to the water collecting pool for reuse, 80m3/h of fresh water can be saved in winter, the precipitation in summer is large, the recycling rate of the rain drainage is high, and 100-400m3/h of fresh water can be saved.
(6) The influence of the waste water in the non-regular waste water pool on the quality of the regular waste water pool is avoided.
(7) By shunting the industrial wastewater, the amount of the industrial wastewater is reduced, the consumption of coagulant aids can be reduced, and the cost of the medicament is saved.
(8) Through reasonable arrangement, the output of the coagulation clarification tank can be reduced.
(9) The purposes of simplifying the system flow and repairing the old and utilizing the waste pipeline valve can be achieved by dismantling and utilizing the waste pipeline valve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of an existing industrial wastewater treatment system;
FIG. 2 is a schematic view of an industrial wastewater treatment system according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1 a reclaimed water inlet pipeline, 2 a stirring clarification tank, 3 a fire water tank, 4 a circulating water replenishing pump, 5 a cooling tower, 6 a cooling water circulating pipeline, 7 a raw water pump, 8 a raw water tank, 9 a recovered water pump to a clean water pump outlet main pipe, 10 a recovered water pump to a clean water pump outlet main pipe manual door, 10-2 a replenishing water manual regulating valve, 11 a clean water pump outlet main pipe, 12 a rain drainage pump, 13 a water collecting tank, 14 a rain drainage outlet, 15-2 a regular wastewater tank, 15-3 an irregular wastewater tank, 16 a wastewater lifting pump, 17 a coagulation clarification tank, 18 a filter water tank, 19 a treated living water pipeline, 20 a filter water pump, 21 a filter water pump to a mechanical acceleration stirring clarification tank inlet manual door, 21-2 a replenishing water stop valve, 22 a newly-increased pipeline I, 23 a newly-increased pipeline II, 24-a wastewater communicating pump, 25-an online turbidity meter and 26-overproof electric valve, 27-electric valve for turbidity reaching standard.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in an original industrial wastewater treatment system, after reclaimed water 1 enters a plant reclaimed water system 2 for deep treatment, one path of reclaimed water is supplemented to a raw water tank 8 through a raw water pump 7 to be used as a water source for producing water of a chemical desalination water system; one path of water is used as a user water source such as a circulating water supplementing water source 4, hydrogen station cooling water, fire water, heat supply network supplementing water, miscellaneous water and the like, and reservoir incoming water is used as a production standby water source for supplementing water to a heat supply network.
The detailed sources of the industrial wastewater of the drainage system are as follows:
the method is mainly from the drainage of miscellaneous water of a main factory building, ground washing water, the drainage of cooling water of an auxiliary machine, the drainage of a circulating water treatment room, the drainage of chemical water treatment equipment (comprising the drainage of a self-cleaning filter, ultrafiltration washing water, reverse osmosis concentrated water and washing water, EDI concentrated water, polar water and washing wastewater, fine treatment regeneration wastewater, pre-filter washing water, drainage of a sampling room, drainage of a boiler and the like), the oily sewage after oil removal, the treated domestic sewage, laboratory drainage and other drainage.
Is provided with a chemical industrial wastewater treatment station for treating various industrial wastewater, and the treatment capacity is 100m3H is used as the reference value. The industrial wastewater treatment station is provided with two industrial wastewater ponds which are used for collecting wastewater conveyed to the industrial wastewater treatment station from a pipeline; the industrial wastewater pond is discharged to the stirring clarification tank 2 for recycling after being treated by coagulation clarification filtration 17 and 18; the treated domestic wastewater 19 is discharged to the filtering water tank 18. All rain drainage water in the plant area is collected in a centralized way, then is recycled to the water collecting tank 13 through the rain drainage pump 12, and is conveyed to the plant area for recycling the service water. Except that part of wastewater (such as fine treatment regeneration wastewater) needing to be adjusted in pH is discharged into a chemical neutralization tank for neutralization, the wastewater is conveyed to an industrial wastewater tank after the pH meets the requirement, other industrial wastewater is collected by an outdoor pipeline and directly conveyed to the industrial wastewater tank, SS and COD are removed by coagulation, clarification, air flotation and filtration, and then the wastewater is reused for dry ash humidifying, coal conveying system flushing water make-up water, power plant miscellaneous water and the like. However, the industrial wastewater treatment station can only be operated discontinuously because of less water consumption of users. Before transformation, the wastewater station only processes a small amount of industrial wastewater, and most of the industrial wastewater overflows to a rain drainage system through a wastewater adjusting tank to be recovered. The rain drainage is recycled to the water collecting tank 13 through the rain drainage pump 12, and when the rain drainage needs to maintain a certain water level, the rain drainage is carried outThe water system recovery amount is large, when the collecting tank can not be completely accommodated, part of the water needs to be discharged outside 14, and the discharge has high environmental protection risk and potential safety hazard.
In view of the above disadvantages, the present proposal solves the following problems:
the biggest problem of zero discharge of sewage in a certain power plant is that a large amount of industrial wastewater cannot be recycled, and the biggest problem of the industrial wastewater after coagulation, clarification and filtration is that the conductivity is higher, so that how to reasonably recycle the high-salt water is a key technical problem.
Based on the technical problems, the original industrial wastewater treatment system is modified to form the zero-emission industrial wastewater treatment system shown in fig. 2, and the unmodified part is consistent with the original industrial wastewater treatment system, which specifically comprises the following steps:
(1) the regenerated water system can not treat the high conductivity water of the industrial filter tank 18, and the filtering water pump 20 main pipe to the inlet pipeline of the mechanical accelerated stirring clarification tank 2 can not be put into operation. The pipeline between 2 entrys of stirring clarification tank is accelerated to disconnection filtration water pump 20 female pipe and machinery, installs the closure plate additional in filtration water pump female pipe side and the mechanical stirring clarification tank entry female pipe side of accelerating respectively, and production sewage is whole recycle, thoroughly solves the outer environmental protection hidden danger of arranging of sewage.
(2) The water source of the clean water tank is changed, the original water from the reclaimed water tank of the reclaimed water system is changed into the water from the filter tank 18 of the industrial wastewater station, the reclaimed water pump between the reclaimed water pump and the clean water pump is disconnected to the outlet main pipe 9 of the clean water pump, and the side of the reclaimed water pump main pipe and the side of the clean water tank inlet main pipe are additionally provided with the blocking plates. One end of the pipeline which is disconnected at the side of the filter water pump 20 is connected with the clean water pump outlet main pipe 11, and a pipeline I22 is added; one end of a clean water pump outlet main pipe 11 is connected with a circulating water replenishing pipe 4, a pipe II 23 is additionally arranged, the position is behind the circulating water to the fire fighting water pipe, the clean water pool high-conductivity water is replenished in the circulating water tower, and the fresh water quantity can be saved by about 80m 3/h.
(3) The manual door 10 from the recovery water pump to the clean water pump outlet main pipe is used as a clean water pump outlet main pipe to a circulating water supplementing manual adjusting door 10-2, the water supplementing of a regenerated water system to circulating water is reduced by about 80m3/h, the running pressure of the regenerated water system is relieved, and the problems that a user at the downstream of a clean water tank consumes less water, industrial wastewater cannot run continuously and overflows to a rain drainage tank to pollute the water quality of the rain drainage system after the system is transformed are avoided.
(4) The manual door 21 from the filter pump to the inlet of the mechanical accelerated stirring clarification tank is used as a clean water pump to a circulating water replenishing stop door 21-2, after system transformation, the problems that a user at the downstream of a clean water tank consumes less water, industrial wastewater cannot continuously run and overflows to a rain drainage tank to pollute the water quality of a rain drainage system are solved, the rain drainage tank recovers miscellaneous water of a plant area by about 80m3/h without pollution of industrial wastewater overflow water, all rain drainage is recovered to a water collecting tank for recycling, 80m3/h of fresh water can be saved in winter, the amount of precipitation in summer is large, the recovery utilization rate of rain drainage is high, and 100-fold 400m3/h of fresh water can be saved.
(5) The removed waste pipeline valve is used as a modification supplement material, and the purposes of simplifying the system flow and repairing the old and utilizing the waste pipeline valve can be achieved by removing and utilizing the waste pipeline valve.
(6) The wastewater pool 15 is divided into a regular wastewater pool 15-2 and an irregular wastewater pool 15-3, the regular wastewater pool collects regular wastewater such as a unit drainage tank, and the irregular wastewater pool collects irregular wastewater such as chemical cleaning. The non-recurrent wastewater ponds are not directly connected with the wastewater lifting pump 16, and the wastewater is pumped into the recurrent wastewater ponds 15 by the wastewater communicating pump 24 after the aeration water quality is qualified, so that the influence of the wastewater in the non-recurrent wastewater ponds on the water quality of the recurrent wastewater ponds is avoided.
(7) The pipeline from the wastewater lifting pump 16 to the coagulating and clarifying tank 17 is provided with another bypass which is directly communicated to the filtering water tank 18 to shunt wastewater, part of clean wastewater, such as sampling constant flow water, treated oily wastewater and the like, can be directly pumped into a domestic wastewater reuse water tank (the filtering water tank 18) and is converged into the filtering water tank along with domestic wastewater 19, and the industrial wastewater is shunted to reduce the amount of industrial wastewater, so that the coagulant aid consumption can be reduced, and the medicament cost is saved.
(8) Install online turbidity meter 25, turbidity motorised valve 26 that exceeds standard and turbidity motorised valve 27 that reaches standard additional behind waste water elevator pump 16, when turbidity exceeds standard, carry out the clarification of coagulating and handle, directly filter when turbidity is up to standard, detect whether quality of water turbidity is up to standard to whether the judgement needs to handle through coagulating sedimentation tank 17.
(6) The improvement is completed, the industrial wastewater treatment system runs at full load, the running output of a single clean water pump is 100m3/h, and one path of clean water is about 18m3/h and is used for desulfurization, ash removal and coal conveying system consumption; one path of clean water is about 82m3/h and is used for replenishing water of a circulating water system.
The detailed sources of the industrial wastewater of the drainage system after modification are as follows:
after being treated by reclaimed water, the reclaimed water is used as water for a fire water tank, a raw water tank and a cooling tower for standby; after the domestic sewage is treated, part of clean wastewater (such as steam-water sampling constant flow water and treated oily wastewater) is discharged into a domestic wastewater reuse water pool, is discharged into a filter water pool together for filtering, and is finally pumped into a cooling tower for water supplement through a circulating water supplement pump; the regeneration wastewater and the like which need to be neutralized are discharged into a regular industrial wastewater pool through the pH adjustment of a pH adjusting pool; the industrial wastewater pool is divided into a regular wastewater pool and an irregular wastewater pool, wherein the regular wastewater pool is used for containing the drainage of the service water of a main factory building, the drainage of a circulating water treatment room, the drainage of chemical water treatment equipment, the drainage of a laboratory, the irregular wastewater pool after COD reaches the standard after the aeration of a Roots blower and the like; the non-regular wastewater pool is used for storing chemical cleaning, air preheater washing wastewater and other drainage water; install online turbidity meter behind the regular wastewater disposal basin for monitoring wastewater disposal basin turbidity, when the turbidity reaches standard, directly arrange the filtering ponds and filter, as the cooling tower moisturizing, through conventional clarification filtration that congeals when the turbidity is not up to standard, as the cooling tower moisturizing.
After the system is transformed, one water is used for multiple purposes, the water is used in a cascade way, the waste water is recycled, and the phenomenon of high quality and low use of the water is avoided; the consumption of fresh water is reduced, the recyclable wastewater is used to replace the consumption of fresh water to the maximum extent, and the phenomenon that the recyclable wastewater cannot be recycled after being mixed and collected is avoided.
In the present invention, unless otherwise explicitly specified or limited, the terms are to be interpreted broadly, e.g. as being either fixedly attached or removably attached, or integral; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the terms in the invention is understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A zero release industrial waste water processing system which characterized in that: comprises a stirring clarification tank (2), the input end of the stirring clarification tank (2) is connected with a reclaimed water inlet pipeline (1), one path of the output end of the stirring clarification tank (2) is communicated to a raw water tank (8) through a raw water pump (7), the other path is communicated to a cooling tower (5) through a circulating water replenishing pump (4), and the stirring clarification tank also comprises a water collecting tank (13) and an industrial wastewater tank, the input end of the water collecting tank (13) is connected with a rain drainage pipeline through a rain drainage pump (12), the output end of the industrial wastewater tank is communicated with a coagulation clarification tank (17) and a filter water tank (18) in turn through a wastewater lifting pump (16), the output end of the filter water tank (18) is connected with a clean water pump outlet main pipe (11) through a filter water pump (20), the clean water pump outlet main pipe (11) is communicated to the input end of the circulating water replenishing pump (4) through a water replenishing manual adjusting valve (10-2) and a water replenishing stop valve (21-2) in sequence.
2. The zero-emission industrial wastewater treatment system according to claim 1, characterized in that: the output end of the stirring clarification tank (2) is also provided with a channel communicated to a fire-fighting water tank (3).
3. The zero-emission industrial wastewater treatment system according to claim 1, characterized in that: the cooling tower (5) further comprises a cooling water circulation pipeline (6), and the cooling water circulation pipeline (6) is communicated from the bottom of the cooling tower (5) to the top of the cooling tower to form an internal water circulation channel of the cooling tower (5).
4. The zero-emission industrial wastewater treatment system according to claim 1, characterized in that: the output end of the water collecting tank (13) is provided with a rain drainage outlet (14).
5. The zero-emission industrial wastewater treatment system according to claim 1, characterized in that: the input end of the filtering water tank (18) is also provided with a treated domestic water pipeline (19).
6. The zero-emission industrial wastewater treatment system according to claim 1, characterized in that: the industrial wastewater pool comprises a regular wastewater pool (15-2) and an irregular wastewater pool (15-3), wherein the irregular wastewater pool (15-3) is communicated with the regular wastewater pool (15-2) through a wastewater communication pump (24), and the regular wastewater pool (15-2) is communicated with the input end of the wastewater lifting pump (16).
7. The zero-emission industrial wastewater treatment system according to claim 1, characterized in that: and a pipeline from the wastewater lifting pump (16) to the coagulation clarification tank (17) is provided with another bypass which is directly communicated to the filter water tank (18).
8. The zero-emission industrial wastewater treatment system according to claim 7, characterized in that: the input of coagulating and clarifying pond (17) and the input of filtering water pond (18) are provided with turbidity motorised valve (26) that exceeds standard and turbidity motorised valve (27) up to standard respectively, and the output of waste water elevator pump (16) is provided with online turbidity meter (25).
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| US20110108405A1 (en) * | 2009-11-12 | 2011-05-12 | General Electric Company | Gasification plant with total zero discharge of plant process waters |
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