CN210505913U - Make-up water treatment system suitable for natural gas distributed energy resource station - Google Patents
Make-up water treatment system suitable for natural gas distributed energy resource station Download PDFInfo
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- CN210505913U CN210505913U CN201920687391.7U CN201920687391U CN210505913U CN 210505913 U CN210505913 U CN 210505913U CN 201920687391 U CN201920687391 U CN 201920687391U CN 210505913 U CN210505913 U CN 210505913U
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Abstract
The utility model discloses a make-up water processing system suitable for natural gas distributed energy resource station, including raw water pond, raw water heater, line mixer, flocculating agent charge device, ceramic membrane ultrafiltration device, ultrafiltration water tank, reverse osmosis reducing agent charge device, reverse osmosis antisludging agent charge device, reverse osmosis unit, fresh water tank, degasification membrane device, nitrogen cylinder, vacuum pump, make-up water tank, neutralization pond, acidification device and alkalifying device. The utility model discloses can effectively get rid of colloidal particle, zwitterion and dissolved oxygen in the municipal administration running water, satisfy natural gas distributed energy resource station make-up water quality of water requirement.
Description
Technical Field
The utility model belongs to the technical field of industrial water treatment technique and specifically relates to a make-up water processing system suitable for natural gas distributed energy resource station is related to.
Background
The natural gas distributed energy station is a small and medium-sized combined cooling heating and power system which takes natural gas as a raw material, is arranged close to users and is connected to a low-voltage power distribution network or directly provides the users. The system is located in the center area of a town, and the water demand is small, so that municipal tap water with good water quality is generally used as a supplementary water source. Conventional chemical water treatment processes, such as coagulation clarification, filtration, primary desalting, mixed bed, pretreatment, ultrafiltration, reverse osmosis, ion exchange system, pretreatment, ultrafiltration, secondary reverse osmosis and electrodeionization, are not suitable for natural gas distributed energy stations due to long process flow, complex system and large operation and maintenance amount in Chinese patent application No. 201710772890.1. In addition, the water treatment processes can not remove dissolved oxygen in water, the dissolved oxygen can be removed only by a subsequent thermal deaerator, and a natural gas distributed energy station is not provided with a deaerator generally, so that the requirement that the dissolved oxygen is lower than 10ppb can not be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the shortcoming and not enough of conventional technique, provide a make-up water processing system who is applicable to natural gas distributed energy station, structural design is reasonable, and simple and direct reliable of process flow can provide high-quality make-up water.
The utility model provides a technical scheme that above-mentioned problem adopted is: a make-up water treatment system suitable for a natural gas distributed energy station is characterized by comprising a raw water tank, a raw water heater, a pipeline mixer, a flocculating agent dosing device, a ceramic membrane ultrafiltration device, an ultrafiltration water tank, a reverse osmosis reducing agent dosing device, a reverse osmosis scale inhibitor dosing device, a reverse osmosis device, a fresh water tank, a degassing membrane device, a nitrogen bottle, a vacuum pump, a make-up water tank, a neutralization water tank, an acid adding device and an alkali adding device; the water outlet of the raw water tank is communicated with the water inlet of the raw water heater, the water outlet of the raw water heater and the outlet of the flocculating agent dosing device are communicated with the water inlet of the pipeline mixer, the water outlet of the pipeline mixer is communicated with the water inlet of the ceramic membrane ultrafiltration device, the water outlet of the ceramic membrane ultrafiltration device is communicated with the water inlet of the ultrafiltration water tank, the water outlet of the ultrafiltration water tank, the outlet of the reverse osmosis reducing agent dosing device and the outlet of the reverse osmosis scale inhibitor dosing device are communicated with the water inlet of the reverse osmosis device, the water outlet of the reverse osmosis device is communicated with the water inlet of the degassing membrane device through the fresh water tank, the air inlet of the degassing membrane device is communicated with the air outlet of a nitrogen bottle, the air outlet of the degassing membrane device is communicated with the inlet of a vacuum pump, the water outlet of the degassing membrane device is communicated with the water inlet of the make-up water tank; the water outlet of the ultrafiltration water tank is also communicated with a backwashing water inlet of the ceramic membrane ultrafiltration device, the water outlet of the fresh water tank is also communicated with a rinsing water inlet of the reverse osmosis device, a backwashing water outlet of the ceramic membrane ultrafiltration device, a rinsing water outlet of the reverse osmosis device, an outlet of the acid adding device and an outlet of the alkali adding device are all communicated with a water inlet of the neutralization tank, and a water outlet of the neutralization tank is communicated with a municipal sewage pipe network.
Furthermore, a concentrated water outlet of the reverse osmosis device is communicated with a water inlet of the neutralization pond.
Further, the water outlet of the raw water pool is communicated with the water inlet of the raw water heater through a raw water pump; the water outlet of the ultrafiltration water tank is communicated with the backwashing water inlet of the ceramic membrane ultrafiltration device through an ultrafiltration backwashing water pump; the water outlet of the ultrafiltration water tank is communicated with the water inlet of the reverse osmosis device through an ultrafiltration water production pump and a reverse osmosis booster pump; the water outlet of the fresh water tank is communicated with a flushing water inlet of the reverse osmosis device through a reverse osmosis flushing water pump; the water outlet of the fresh water tank is communicated with the water inlet of the degassing membrane device through a water replenishing pump; and the water outlet of the neutralization pond is communicated with a municipal sewage pipe network through a waste water pump.
Compared with the prior art, the utility model, have following advantage and effect:
in the process of treating municipal tap water, the tap water is sequentially heated in a raw water heater, a flocculating agent is added into a pipeline mixer for micro-flocculation reaction, then filtration is carried out in a ceramic membrane ultrafiltration device, desalination is carried out in a reverse osmosis device, degassing treatment is carried out in a degassing membrane device, and finally produced water enters a water supply tank to serve as the water supply of a natural gas distributed energy resource station. By adopting the micro-flocculation and ultrafiltration coupling process, the removal of colloidal particles and organic matters in water can be enhanced, and the pollution of an ultrafiltration membrane can be effectively relieved. The ultrafiltration device adopts an inorganic ceramic membrane component, has better tolerance to pollutants, can run under high flux, has long service life, generates water turbidity less than 0.2NTU, and has SDI less than 3. The desalination system adopts a reverse osmosis and degassing membrane process, the conductivity of produced water is less than 10 mu S/cm, the dissolved oxygen of the produced water is less than 10ppb, and the water quality standard requirement of the make-up water of the natural gas distributed energy station is completely met.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: the device comprises a raw water tank 1, a raw water pump 2, a raw water heater 3, a pipeline mixer 4, a flocculating agent dosing device 5, a ceramic membrane ultrafiltration device 6, an ultrafiltration water tank 7, an ultrafiltration backwash water pump 8, an ultrafiltration water production pump 9, a reverse osmosis reducing agent dosing device 10, a reverse osmosis scale inhibitor dosing device 11, a reverse osmosis booster pump 12, a reverse osmosis device 13, a fresh water tank 14, a reverse osmosis rinse water pump 15, a water replenishing pump 16, a degassing membrane device 17, a nitrogen cylinder 18, a vacuum pump 19, a water replenishing tank 20, a neutralization water tank 21, an acid adding device 22, an alkali adding device 23 and a waste water pump 24.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Referring to fig. 1, the makeup water treatment system suitable for the natural gas distributed energy station in this embodiment includes a raw water tank 1, a raw water heater 3, a pipeline mixer 4, a flocculant dosing device 5, a ceramic membrane ultrafiltration device 6, an ultrafiltration water tank 7, a reverse osmosis reducing agent dosing device 10, a reverse osmosis scale inhibitor dosing device 11, a reverse osmosis device 13, a fresh water tank 14, a degassing membrane device 17, a nitrogen gas bottle 18, a vacuum pump 19, a makeup water tank 20, a neutralization water tank 21, an acid adding device 22, and an alkali adding device 23.
The water outlet of the raw water tank 1 is communicated with the water inlet of the raw water heater 3, the water outlet of the raw water heater 3 and the outlet of the flocculating agent dosing device 5 are communicated with the water inlet of the pipeline mixer 4, the water outlet of the pipeline mixer 4 is communicated with the water inlet of the ceramic membrane ultrafiltration device 6, the water outlet of the ceramic membrane ultrafiltration device 6 is communicated with the water inlet of the ultrafiltration water tank 7, the water outlet of the ultrafiltration water tank 7, the outlet of the reverse osmosis reducing agent dosing device 10 and the outlet of the reverse osmosis antisludging agent dosing device 11 are communicated with the water inlet of the reverse osmosis device 13, the produced water outlet of the reverse osmosis device 13 is communicated with the water inlet of the degassing membrane device 17 through the fresh water tank 14, the air inlet of the degassing membrane device 17 is communicated with the air outlet of the nitrogen bottle 18, the air outlet of the degassing membrane, the water outlet of the degassing membrane device 17 is communicated with the water inlet of the make-up water tank 20;
the water outlet of the ultrafiltration water tank 7 is also communicated with a backwashing water inlet of the ceramic membrane ultrafiltration device 6, the water outlet of the fresh water tank 14 is also communicated with a rinsing water inlet of the reverse osmosis device 13, a backwashing water outlet of the ceramic membrane ultrafiltration device 6, a rinsing water outlet of the reverse osmosis device 13, a concentrated water outlet of the reverse osmosis device 13, an outlet of the acid adding device 22 and an outlet of the alkali adding device 23 are all communicated with the water inlet of the neutralization water tank 21, and the water outlet of the neutralization water tank 21 is communicated with a municipal sewage pipe network.
In the embodiment, the water outlet of the raw water pool 1 is communicated with the water inlet of the raw water heater 3 through the raw water pump 2; the water outlet of the ultrafiltration water tank 7 is communicated with the backwashing water inlet of the ceramic membrane ultrafiltration device 6 through an ultrafiltration backwashing water pump 8; the water outlet of the ultrafiltration water tank 7 is communicated with the water inlet of the reverse osmosis device 13 through an ultrafiltration water producing pump 9 and a reverse osmosis booster pump 12; the water outlet of the fresh water tank 14 is communicated with the flushing water inlet of the reverse osmosis device 13 through a reverse osmosis flushing water pump 15; the water outlet of the fresh water tank 14 is communicated with the water inlet of the degassing membrane device 17 through a water replenishing pump 16; the water outlet of the neutralization pond 21 is communicated with a municipal sewage pipe network through a waste water pump 24.
The working process is as follows: municipal tap water enters a raw water tank 1, raw water is heated by a raw water heater 3, the heated raw water enters a pipeline mixer 4, a flocculating agent is added into the pipeline mixer 4 for micro flocculation reaction, the effluent of the pipeline mixer 4 enters a ceramic membrane ultrafiltration device 6 for filtration treatment, the effluent of the ceramic membrane ultrafiltration device 6 enters an ultrafiltration water tank 7, backwash water of the ceramic membrane ultrafiltration device 6 comes from the ultrafiltration water tank 7, the ceramic membrane ultrafiltration device 6 is backwashed by an ultrafiltration backwash water pump 8, and backwash wastewater enters a neutralization water tank 21; the effluent of the ultrafiltration water tank 7 enters a reverse osmosis device 13 for desalination treatment through an ultrafiltration water production pump 9 and a reverse osmosis booster pump 12, the concentrated water of the reverse osmosis device 13 enters a neutralization water tank 21, the produced water of the reverse osmosis device 13 enters a fresh water tank 14, the produced water enters a degassing membrane device 17 through a water replenishing pump 16 for degassing treatment, and the produced water of the degassing membrane device 17 enters a water replenishing tank 20; the start-stop flushing water of the reverse osmosis device 13 comes from the fresh water tank 14, the reverse osmosis device 13 is flushed through the reverse osmosis flushing water pump 15, the flushing wastewater enters the neutralization water tank 21, the pH value of the wastewater in the neutralization water tank 21 is adjusted to 6-9 through the acid adding device 22 and the alkali adding device 23, and then the wastewater is discharged to a municipal sewage pipe network through the wastewater pump 24.
The effluent of the raw water heater 3 is added with a flocculating agent for micro-flocculation reaction, which is beneficial to strengthening the removal effect of the ultrafiltration on colloid particles and organic matters and effectively relieving the pollution of the ultrafiltration membrane, and the ceramic membrane ultrafiltration device 6 adopts inorganic α -Al2O3A ceramic membrane module having an average pore size of 30 nm; the reverse osmosis device 13 adopts a first-stage second-stage structure, and a pressurizing structure is not arranged between the stages; the degassing membrane device 17 adopts a hollow fiber membrane wire subjected to hydrophobic treatment, and realizes degassing and deoxygenation by utilizing the characteristic that gas can permeate the membrane but liquid cannot permeate the membrane under certain conditions; degassing membrane unit 17 has the following three modes of operation: air-entrapping stripping, vacuumizing, and combining air-entrapping stripping and vacuumizing.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as being included in the following claims.
Claims (3)
1. A make-up water treatment system suitable for a natural gas distributed energy station is characterized by comprising a raw water tank (1), a raw water heater (3), a pipeline mixer (4), a flocculating agent dosing device (5), a ceramic membrane ultrafiltration device (6), an ultrafiltration water tank (7), a reverse osmosis reducing agent dosing device (10), a reverse osmosis scale inhibitor dosing device (11), a reverse osmosis device (13), a fresh water tank (14), a degassing membrane device (17), a nitrogen bottle (18), a vacuum pump (19), a make-up water tank (20), a neutralization water tank (21), an acid adding device (22) and an alkali adding device (23); the water outlet of the raw water tank (1) is communicated with the water inlet of the raw water heater (3), the water outlet of the raw water heater (3) and the outlet of the flocculant dosing device (5) are communicated with the water inlet of the pipeline mixer (4), the water outlet of the pipeline mixer (4) is communicated with the water inlet of the ceramic membrane ultrafiltration device (6), the water outlet of the ceramic membrane ultrafiltration device (6) is communicated with the water inlet of the ultrafiltration water tank (7), the water outlet of the ultrafiltration water tank (7), the outlet of the reverse osmosis reducing agent dosing device (10) and the outlet of the reverse osmosis scale inhibitor dosing device (11) are communicated with the water inlet of the reverse osmosis device (13), the water outlet of the reverse osmosis device (13) is communicated with the water inlet of the degassing membrane device (17) through the fresh water tank (14), and the air inlet of the degassing membrane device (17) is communicated with the air outlet of the nitrogen bottle (18), an air outlet of the degassing membrane device (17) is communicated with an inlet of a vacuum pump (19), an outlet of the vacuum pump (19) is communicated with the atmosphere, and a water production outlet of the degassing membrane device (17) is communicated with a water inlet of a make-up water tank (20); the water outlet of the ultrafiltration water tank (7) is communicated with a backwashing water inlet of the ceramic membrane ultrafiltration device (6), the water outlet of the fresh water tank (14) is communicated with a washing water inlet of the reverse osmosis device (13), a backwashing water outlet of the ceramic membrane ultrafiltration device (6), a washing water outlet of the reverse osmosis device (13), an outlet of the acid adding device (22) and an outlet of the alkali adding device (23) are communicated with a water inlet of the neutralization water tank (21), and the water outlet of the neutralization water tank (21) is communicated with a municipal sewage pipe network.
2. The system for treating the makeup water for the natural gas distributed energy source station according to claim 1, wherein a concentrated water outlet of the reverse osmosis device (13) is communicated with a water inlet of the neutralization pond (21).
3. The system for treating the makeup water suitable for the natural gas distributed energy source station according to claim 1, wherein the water outlet of the raw water pool (1) is communicated with the water inlet of the raw water heater (3) through a raw water pump (2); the water outlet of the ultrafiltration water tank (7) is communicated with the backwashing water inlet of the ceramic membrane ultrafiltration device (6) through an ultrafiltration backwashing water pump (8); the water outlet of the ultrafiltration water tank (7) is communicated with the water inlet of the reverse osmosis device (13) through an ultrafiltration water production pump (9) and a reverse osmosis booster pump (12); the water outlet of the fresh water tank (14) is communicated with the flushing water inlet of the reverse osmosis device (13) through a reverse osmosis flushing water pump (15); the water outlet of the fresh water tank (14) is communicated with the water inlet of the degassing membrane device (17) through a water replenishing pump (16); the water outlet of the neutralization pond (21) is communicated with a municipal sewage pipe network through a waste water pump (24).
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| CN201920687391.7U CN210505913U (en) | 2019-05-15 | 2019-05-15 | Make-up water treatment system suitable for natural gas distributed energy resource station |
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| CN201920687391.7U CN210505913U (en) | 2019-05-15 | 2019-05-15 | Make-up water treatment system suitable for natural gas distributed energy resource station |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110217929A (en) * | 2019-05-15 | 2019-09-10 | 华电电力科学研究院有限公司 | A kind of make up water treatment system and method suitable for Distribution of Natural formula energy source station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110217929A (en) * | 2019-05-15 | 2019-09-10 | 华电电力科学研究院有限公司 | A kind of make up water treatment system and method suitable for Distribution of Natural formula energy source station |
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