CN106884459A - Method and system for reducing operation of water purification and recycling system - Google Patents
Method and system for reducing operation of water purification and recycling system Download PDFInfo
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- CN106884459A CN106884459A CN201510944110.8A CN201510944110A CN106884459A CN 106884459 A CN106884459 A CN 106884459A CN 201510944110 A CN201510944110 A CN 201510944110A CN 106884459 A CN106884459 A CN 106884459A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 274
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000000746 purification Methods 0.000 title description 17
- 238000004064 recycling Methods 0.000 title 1
- 239000010865 sewage Substances 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 239000002351 wastewater Substances 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 2
- 230000035772 mutation Effects 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical class [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 230000009467 reduction Effects 0.000 abstract description 6
- 229910000831 Steel Chemical class 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 239000010959 steel Chemical class 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000008235 industrial water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/02—Methods or layout of installations for water supply for public or like main supply for industrial use
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/074—Arrangement of water treatment devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/30—Relating to industrial water supply, e.g. used for cooling
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Abstract
本发明提供了一种净环水体系减量化运行的方法及系统，将净环水循环系统按照生产的实际需要分为常压净环水体系和高压循环体系，整体降低循环体系的运行压力；污水处理站出水直接供给常压净环水体系，剩余的部分输送至大容量储水池；同时为了保障常压净环水体系的平稳运行，为其设置了缓冲池，保障压力和流量不发生突变；大容量储水池通过水站向常压净环水体系和高压循环体系供水，同时具备备用水站防止事故的发生；将常压净环水体系和高压循环体系剩下的可直接利用的部分直接回水至大容量储水池。本发明通过调整大型钢铁联合企业净环水体系的运行参数和运行方式，减少循环水量和降低循环压力，实现节能减排的目的。
The present invention provides a method and system for reducing the amount of operation of the clean ring water system. According to the actual needs of production, the clean ring water cycle system is divided into a normal pressure clean ring water system and a high-pressure cycle system, and the overall operating pressure of the cycle system is reduced; The effluent of the sewage treatment station is directly supplied to the atmospheric pressure clean water system, and the remaining part is sent to the large-capacity storage tank; at the same time, in order to ensure the smooth operation of the normal pressure clean water system, a buffer pool is set up for it to ensure that the pressure and flow will not change suddenly ;The large-capacity water storage tank supplies water to the normal pressure clean ring water system and the high pressure circulation system through the water station, and has a backup water station to prevent accidents; the remaining parts of the normal pressure clean ring water system and the high pressure cycle system can be directly used Return water directly to the bulk storage tank. The invention reduces the amount of circulating water and reduces the circulating pressure by adjusting the operating parameters and the operating mode of the net ring water system of large iron and steel complexes, so as to realize the purpose of energy saving and emission reduction.
Description
技术领域technical field
本发明涉及水资源环保技术领域，尤其涉及一种净环水体系减量化运行的方法及系统。The invention relates to the technical field of water resources environmental protection, in particular to a method and system for reducing the volume of water purification systems.
背景技术Background technique
钢铁工业在工业领域里是耗水和排污大户，其耗水量约占全国工业水耗的14％，排放污水量约占工业总排放的12％。《国民经济和社会发展第十二个五年规划纲要》规定在“十二五”期间，单位工业增加值用水量需要降低30％。同时水利部日前表示，“今后有可能对重点地区用水大户进行用水总量控制。用水指标使用完毕后，新增水量只能通过水权流转和使用非传统水源满足”。The iron and steel industry is a major player in water consumption and sewage discharge in the industrial field. Its water consumption accounts for about 14% of the national industrial water consumption, and its sewage discharge accounts for about 12% of the total industrial discharge. The "Outline of the Twelfth Five-Year Plan for National Economic and Social Development" stipulates that during the "Twelfth Five-Year Plan" period, the water consumption per unit of industrial added value needs to be reduced by 30%. At the same time, the Ministry of Water Resources recently stated that "in the future, it is possible to control the total amount of water used by large water users in key areas. After the water consumption quota is used up, the newly added water can only be met through the transfer of water rights and the use of non-traditional water sources."
近年来随着钢铁联合企业各生产用户工艺的不断改进，常压净环水系统由于用水量逐渐减少，管网压力由0.3Mpa升高至0.6Mpa左右，运行方式仍沿用以往的方式，造成一定的电耗浪费，多余的水量在系统里循环，加大了管网、水处理以及环保负荷，亟待改善。间断的增开加压泵，造成运行方式不经济，系统循环水量居高不下。拟通过优化系统运行，确定合理的系统压力和流量(保证用户安全用水)，达到降低能耗、减少系统循环水量的目的。In recent years, with the continuous improvement of the processes of various production users of iron and steel complexes, due to the gradual decrease in water consumption of the atmospheric pressure net ring water system, the pressure of the pipe network has increased from 0.3Mpa to about 0.6Mpa, and the operation mode is still in the previous mode, resulting in certain The power consumption is wasted, and the excess water circulates in the system, which increases the load on the pipe network, water treatment and environmental protection, and needs to be improved urgently. Intermittently increase the pressure pump, resulting in uneconomical operation mode, and the high circulation water volume of the system. It is planned to optimize the system operation and determine the reasonable system pressure and flow (to ensure the safe water use of users), so as to achieve the purpose of reducing energy consumption and reducing the circulating water volume of the system.
发明内容Contents of the invention
本发明提供了一种净环水体系减量化运行的方法及系统，通过调整大型钢铁联合企业净环水体系的运行参数和运行方式，在保证企业用水安全可靠的前提下，减少循环水量和降低循环压力，实现节能减排的目的。The invention provides a method and system for reducing the amount of water purification system. By adjusting the operating parameters and operation mode of the environmental water purification system of large-scale iron and steel complexes, the amount of circulating water and Reduce the cycle pressure to achieve the purpose of energy saving and emission reduction.
为实现上述目的，本发明采用以下技术方案实现：To achieve the above object, the present invention adopts the following technical solutions:
一种净环水体系减量化运行的方法，将净环水循环系统按照生产的实际需要分为常压净环水体系和高压循环体系，整体降低循环体系的运行压力；污水处理站出水直接供给常压净环水体系，剩余的部分输送至大容量储水池；同时为了保障常压净环水体系的平稳运行，为其设置了缓冲池，保障压力和流量不发生突变；大容量储水池通过水站向常压净环水体系和高压循环体系供水，同时具备备用水站防止事故的发生；将常压净环水体系和高压循环体系剩下的可直接利用的部分直接回水至大容量储水池；包括如下步骤：A method for reducing the amount of operation of the clean ring water system. The clean ring water cycle system is divided into a normal pressure clean ring water system and a high-pressure cycle system according to the actual needs of production, so as to reduce the operating pressure of the cycle system as a whole; the effluent water of the sewage treatment station is directly supplied Atmospheric pressure net ring water system, the remaining part is sent to the large-capacity water storage tank; at the same time, in order to ensure the smooth operation of the normal pressure clean ring water system, a buffer pool is set up for it to ensure that the pressure and flow do not change suddenly; the large-capacity water storage tank passes through The water station supplies water to the atmospheric pressure clean ring water system and the high pressure circulation system, and has a backup water station to prevent accidents; the remaining directly usable parts of the normal pressure clean ring water system and the high pressure cycle system are directly returned to the large capacity A water storage tank; comprising the steps of:
1)污水处理站将企业内部的生产废水进行深度处理，使其处理后的废水达到回用的标准，产水能力为6000m3/h，一部分输送至常压净环水体系，流量为2500-4000m3/h，另一部分输送至大容量储水池，流量为2000-3500m3/h；1) The sewage treatment station conducts advanced treatment of the production wastewater inside the enterprise to make the treated wastewater meet the reuse standard. The water production capacity is 6000m 3 /h, and part of it is transported to the atmospheric pressure ring water system with a flow rate of 2500- 4000m 3 /h, the other part is transported to the large-capacity storage tank with a flow rate of 2000-3500m 3 /h;
2)常压净环水体系是企业内部的主要用水循环体系，补水量为5000-8000m3/h，运行压力范围为0.3-0.45MPa；同时由于水量受外界和自身的影响波动较大，因此依靠缓冲池来调节水量平衡，缓冲池既可以向常压净环水体系输送水，也可以接受常压净环水体系的来水，调节能力范围为1000-5000m3/h； 2 ) Atmospheric pressure net ring water system is the main water circulation system inside the enterprise. Rely on the buffer pool to adjust the water volume balance. The buffer pool can not only deliver water to the atmospheric pressure purification ring water system, but also accept the incoming water from the atmospheric pressure purification ring water system. The adjustment capacity range is 1000-5000m 3 /h;
3)高压循环体系的供水，主要针对厂区内的高压用水单元，补充水量为1800-2000m3/h，压力为0.6-0.65MPa；3) The water supply of the high-pressure circulation system is mainly aimed at the high-pressure water unit in the plant area, the supplementary water volume is 1800-2000m 3 /h, and the pressure is 0.6-0.65MPa;
4)大容量储水池不仅接收污水处理站的来水，同时还接收循环体系回水的来水；循环体系回水主要来自于常压净环体系和高压循环体系的不与设备直接接触、未受污染的回水，此部分水不用处理即可回用，流量为2500-4000m3/h；4) The large-capacity storage tank not only receives the incoming water from the sewage treatment station, but also receives the incoming water from the circulation system return water; Contaminated backwater, this part of water can be reused without treatment, with a flow rate of 2500-4000m 3 /h;
5)大容量储水池通过水站A和水站B向常压净环水系统供水，补充消耗的水量，保证足够的用水量；大容量储水池通过水站B和水站C向高压循环体系供水，保证足够的用量和压力；各水站的供水能力均为1000-6000m3/h。5) The large-capacity water storage tank supplies water to the atmospheric pressure water purification system through the water station A and the water station B, and supplements the consumed water to ensure sufficient water consumption; the large-capacity water storage tank supplies water to the high-pressure circulation system through the water station B and the water station C For water supply, ensure sufficient consumption and pressure; the water supply capacity of each water station is 1000-6000m 3 /h.
一种净环水体系减量化运行系统，包括污水处理站、常压净环水体系、缓冲池、高压循环体系、循环体系回水、大容量储水池、水站A、水站B、水站C；所述污水处理站通过单向输水管道与常压净环水体系和大容量储水池连接，常压净环水体系通过双向输水管道与缓冲池连接，所述循环体系回水通过单向输水管道与大容量储水池连接，所述水站A通过单向输水管道与大容量储水池和常压净环水体系连接，所述水站B通过单向输水管道分别与大容量储水池、常压净环水体系、高压循环体系连接，所述水站C通过单向输水管道与大容量储水池和高压循环体系连接。A reduction operation system of a clean ring water system, including a sewage treatment station, an atmospheric pressure clean ring water system, a buffer pool, a high-pressure circulation system, a return water of the circulation system, a large-capacity water storage tank, a water station A, a water station B, a water Station C; the sewage treatment station is connected with the atmospheric pressure net ring water system and the large-capacity storage tank through a one-way water pipeline, and the normal pressure clean ring water system is connected with the buffer pool through a two-way water pipeline, and the return water of the circulation system The water station A is connected to the large-capacity water storage tank through the one-way water pipeline, and the water station B is connected to the large-capacity water storage tank and the normal pressure ring water system through the one-way water pipeline. It is connected with a large-capacity water storage tank, an atmospheric pressure net ring water system, and a high-pressure circulation system, and the water station C is connected with a large-capacity water storage tank and a high-pressure circulation system through a one-way water pipeline.
与现有的技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
一种能够有效降低企业使用循环水成本的系统，能够减少用水能耗和用水量、降低购水成本，实现经济效益。A system that can effectively reduce the cost of circulating water used by enterprises can reduce energy consumption and water consumption, reduce water purchase costs, and achieve economic benefits.
附图说明Description of drawings
图1是本发明一种净环水体系减量化运行系统的原理示意图；Fig. 1 is the principle schematic diagram of a kind of ring water system decrement operation system of the present invention;
图中：1-污水处理站，2-常压净环水体系，3-缓冲池，4-高压循环体系，5-循环体系回水，6-大容量储水池，7-水站A，8-水站B，9-水站C。In the figure: 1-sewage treatment station, 2-atmospheric pressure net ring water system, 3-buffer tank, 4-high pressure circulation system, 5-circulation system return water, 6-large capacity storage tank, 7-water station A, 8 - Water station B, 9- Water station C.
具体实施方式detailed description
下面结合附图对本发明的具体实施方式进一步说明：The specific embodiment of the present invention is further described below in conjunction with accompanying drawing:
如图1所示，一种净环水体系减量化运行的方法，将净环水循环系统按照生产的实际需要分为常压净环水体系2和高压循环体系4，整体降低循环体系的运行压力；污水处理站1出水直接供给常压净环水体系2，剩余的部分输送至大容量储水池6；同时为了保障常压净环水体系2的平稳运行，为其设置了缓冲池3，保障压力和流量不发生突变；大容量储水池6通过水站向常压净环水体系2和高压循环体系4供水，同时具备备用水站防止事故的发生；将常压净环水体系2和高压循环体系4剩下的可直接利用的部分直接回水至大容量储水池6；具体包括以下几个步骤：As shown in Figure 1, a method for the reduced operation of the net ring water system divides the net ring water cycle system into the normal pressure clean ring water system 2 and the high pressure cycle system 4 according to the actual needs of production, and reduces the operation of the cycle system as a whole pressure; the effluent of the sewage treatment station 1 is directly supplied to the atmospheric pressure clean ring water system 2, and the remaining part is sent to the large-capacity storage tank 6; at the same time, in order to ensure the smooth operation of the normal pressure clean ring water system 2, a buffer pool 3 is set up for it. Ensure that the pressure and flow do not change suddenly; the large-capacity water storage tank 6 supplies water to the atmospheric pressure water purification system 2 and the high pressure circulation system 4 through the water station, and has a backup water station to prevent accidents; the normal pressure water purification system 2 and The remaining part of the high-pressure circulation system 4 that can be directly used is directly returned to the large-capacity storage tank 6; specifically, the following steps are included:
1)污水处理站1将企业内部的生产废水进行深度处理，使其处理后的废水达到回用的标准，产水能力为6000m3/h，一部分输送至常压净环水体系2，流量为2500-4000m3/h，另一部分输送至大容量储水池6，流量为2000-3500m3/h；1) The sewage treatment station 1 conducts advanced treatment of the production wastewater inside the enterprise, so that the treated wastewater reaches the standard of reuse. The water production capacity is 6000m 3 /h, and part of it is transported to the atmospheric pressure purification ring water system 2, with a flow rate of 2500-4000m 3 /h, and the other part is transported to the large-capacity storage tank 6 with a flow rate of 2000-3500m 3 /h;
2)常压净环水体系2是企业内部的主要用水循环体系，补水量为5000-8000m3/h，运行压力范围为0.3-0.45MPa；同时由于水量受外界和自身的影响波动较大，因此依靠缓冲池3来调节水量平衡，缓冲池3既可以向常压净环水体系2输送水，也可以接受常压净环水体系2的来水，调节能力范围为1000-5000m3/h；2) Atmospheric pressure net ring water system 2 is the main water circulation system inside the enterprise, with a water supply of 5000-8000m 3 /h and an operating pressure range of 0.3-0.45MPa; at the same time, due to the large fluctuations in the water volume due to external and self-influenced, Therefore rely on the buffer pool 3 to adjust the water balance, the buffer pool 3 can not only deliver water to the atmospheric pressure water purification system 2, but also accept the incoming water from the atmospheric pressure water purification system 2, and the adjustment capacity range is 1000-5000m 3 /h ;
3)高压循环体系4的供水，主要针对厂区内的高压用水单元，补充水量为1800-2000m3/h，压力为0.6-0.65MPa；3) The water supply of the high-pressure circulation system 4 is mainly aimed at the high-pressure water unit in the factory area, with a supplementary water volume of 1800-2000m 3 /h and a pressure of 0.6-0.65MPa;
4)大容量储水池6不仅接收污水处理站1的来水，同时还接收循环体系回水5的来水；循环体系回水5主要来自于常压净环体系2和高压循环体系4的不与设备直接接触、未受污染的回水，此部分水不用处理即可回用，流量为2500-4000m3/h；4) The large-capacity storage tank 6 not only receives the incoming water from the sewage treatment station 1, but also receives the incoming water from the backwater 5 of the circulation system; The uncontaminated return water in direct contact with the equipment can be reused without treatment, with a flow rate of 2500-4000m 3 /h;
5)大容量储水池6通过水站A7和水站B8向常压净环水系统2供水，补充消耗的水量，保证足够的用水量；大容量储水池6通过水站B8和水站C9向高压循环体系4供水，保证足够的用量和压力；各水站的供水能力均为1000-6000m3/h。5) The large-capacity water storage tank 6 supplies water to the atmospheric pressure water purification system 2 through the water station A7 and the water station B8, and supplements the consumed water to ensure sufficient water consumption; High-pressure circulation system 4 supplies water to ensure sufficient consumption and pressure; the water supply capacity of each water station is 1000-6000m 3 /h.
一种净环水体系减量化运行系统，包括污水处理站1、常压净环水体系2、缓冲池3、高压循环体系4、循环体系回水5、大容量储水池6、水站A7、水站B8、水站C9；所述污水处理站1通过单向输水管道与常压净环水体系2和大容量储水池6连接，常压净环水体系2通过双向输水管道与缓冲池3连接，所述循环体系回水5通过单向输水管道与大容量储水池6连接，所述水站A7通过单向输水管道与大容量储水池6和常压净环水体系2连接，所述水站B8通过单向输水管道分别与大容量储水池6、常压净环水体系2、高压循环体系4连接，所述水站C9通过单向输水管道与大容量储水池6和高压循环体系4连接。A reduction operation system of a clean ring water system, including a sewage treatment station 1, an atmospheric pressure clean ring water system 2, a buffer pool 3, a high-pressure cycle system 4, a return water of the cycle system 5, a large-capacity water storage tank 6, and a water station A7 , water station B8, water station C9; the sewage treatment station 1 is connected with the normal pressure clean ring water system 2 and the large capacity storage tank 6 through the one-way water pipeline, and the normal pressure clean ring water system 2 is connected with the normal pressure clean ring water system through the two-way water pipeline The buffer pool 3 is connected, the circulation system return water 5 is connected with the large-capacity storage tank 6 through the one-way water delivery pipeline, and the water station A7 is connected with the large-capacity storage tank 6 and the atmospheric pressure net ring water system through the one-way water delivery pipeline 2, the water station B8 is connected to the large-capacity water storage tank 6, the atmospheric pressure clean ring water system 2, and the high-pressure circulation system 4 through a one-way water pipeline, and the water station C9 is connected to the large-capacity water tank through a one-way water pipeline. The water storage tank 6 is connected with the high-pressure circulation system 4 .
污水处理站1将生产废水进行深度处理使其达到回用标准，部分直接输送到常压净环水体系2，部分输送到大容量储水池6以备使用；Sewage treatment station 1 conducts advanced treatment of production wastewater to make it meet the reuse standard, part of it is directly transported to the atmospheric purification ring water system 2, and part of it is transported to the large-capacity storage tank 6 for use;
常压净环水体系2和高压循环体系4所需的压力不同，用以满足不同生产工艺的需求；The pressure required by the normal pressure water purification system 2 and the high pressure circulation system 4 are different to meet the needs of different production processes;
缓冲池3用来调节常压净化水体系2的水量和水压的波动，保证供水的稳定，满足各用户的需求；The buffer pool 3 is used to adjust the water volume and water pressure fluctuations of the normal pressure purified water system 2 to ensure the stability of water supply and meet the needs of various users;
循环体系回水5统一收集常压净环水体系2和高压循环体系4的剩余高品质外排水，然后输送至大容量储水池6；The return water of the circulation system 5 collects the remaining high-quality external drainage of the atmospheric pressure net ring water system 2 and the high-pressure circulation system 4, and then transports it to the large-capacity storage tank 6;
大容量储水池6用于存储工业用水，拥有足够的富余容量以保证在突发情况下生产的持续运行；The large-capacity water storage tank 6 is used to store industrial water, and has enough surplus capacity to ensure the continuous operation of production in emergencies;
水站A7为常压净环水系统提供补充水，水站B8为备用水站，可以为常压净环水体系2和高压循环体系4提供补充水，水站C9为高压循环体系4提供补充水。Water station A7 provides supplementary water for the atmospheric pressure water purification system, water station B8 is a backup water station, which can provide supplementary water for the normal pressure water purification system 2 and the high-pressure circulation system 4, and water station C9 provides supplementary water for the high-pressure circulation system 4 water.
实施例1：Example 1:
污水处理站1的处理后产水能力为6000m3/h，供给常压净环水体系2为4000m3/h，输送至大容量储水池6为2000m3/h；常压净环水体系2补充水量8000m3/h，压力0.45MPa，高压循环体系4补充水量2000m3/h，压力0.65MPa，循环体系回水5流量4000m3/h。The water production capacity of sewage treatment station 1 after treatment is 6000m 3 /h, which is 4000m 3 /h for supplying atmospheric pressure clean ring water system 2, and 2000m 3 /h for transporting to large capacity storage tank 6; the normal pressure clean ring water system 2 Supplementary water volume 8000m 3 /h, pressure 0.45MPa, high pressure circulation system 4 supplementary water volume 2000m 3 /h, pressure 0.65MPa, circulation system return water 5 flow rate 4000m 3 /h.
实施例2：Example 2:
污水处理站1的处理后产水能力为6000m3/h，供给常压净环水体系2为3000m3/h，输送至大容量储水池6为3000m3/h；常压净环水体系2补充水量7000m3/h，系统压力0.40MPa，高压循环体系4补充水量2000m3/h，系统压力0.65MPa，循环体系回水5流量3500m3/h。The water production capacity of sewage treatment station 1 after treatment is 6000m 3 /h, which is 3000m 3 /h for supply to the normal pressure clean ring water system 2, and 3000m 3 /h for delivery to the large capacity storage tank 6; the normal pressure clean ring water system 2 The supplementary water volume is 7000m 3 /h, the system pressure is 0.40MPa, the supplementary water volume of the high-pressure circulation system 4 is 2000m 3 /h, the system pressure is 0.65MPa, and the return water flow rate of the circulation system 5 is 3500m 3 /h.
实施例3：Example 3:
污水处理站1的处理后产水能力为6000m3/h，供给常压净环水体系2为2500m3/h，输送至大容量储水池6为3500m3/h；常压净环水体系2补充水量6000m3/h，系统压力0.35MPa，高压循环体系4补充水量2000m3/h，系统压力0.65MPa，循环体系回水5流量3000m3/h。The water production capacity of sewage treatment station 1 after treatment is 6000m 3 /h, which is 2500m 3 /h for supply to the atmospheric pressure clean ring water system 2, and 3500m 3 /h for transporting to the large-capacity storage tank 6; the normal pressure clean ring water system 2 The supplementary water volume is 6000m 3 /h, the system pressure is 0.35MPa, the supplementary water volume of the high-pressure circulation system 4 is 2000m 3 /h, the system pressure is 0.65MPa, and the flow rate of the circulation system return water 5 is 3000m 3 /h.
实施例4：Example 4:
污水处理站1的处理后产水能力为6000m3/h，供给常压净环水体系2为3000m3/h，输送至大容量储水池6为3000m3/h；常压净环水体系2补充水量5000m3/h，系统压力0.30MPa，高压循环体系4补充水量1800m3/h，系统压力0.60MPa，循环体系回水5流量2500m3/h。The water production capacity of sewage treatment station 1 after treatment is 6000m 3 /h, which is 3000m 3 /h for supply to the normal pressure clean ring water system 2, and 3000m 3 /h for delivery to the large capacity storage tank 6; the normal pressure clean ring water system 2 The supplementary water volume is 5000m 3 /h, the system pressure is 0.30MPa, the supplementary water volume of the high-pressure circulation system 4 is 1800m 3 /h, the system pressure is 0.60MPa, and the flow rate of the circulation system backwater 5 is 2500m 3 /h.
如表1所示，原有的循环体系不分常压和高压，只有高压循环体系，系统运行压力为0.6MPa，流量为10500m3/h；而本发明采用分级供水，即常压净环水体系和高压循环体系分别运行，不仅降低了总体的流量，而且降低了常压净环水体系的管网压力，此种减量、降压运行，可以达到降低能耗、减少水量的目的，实现经济效益。As shown in Table 1, the original circulation system does not distinguish between normal pressure and high pressure, only the high pressure circulation system, the operating pressure of the system is 0.6MPa, and the flow rate is 10500m 3 /h; while the present invention adopts graded water supply, that is, normal pressure ring water The system and the high-pressure circulation system operate separately, which not only reduces the overall flow rate, but also reduces the pressure of the pipe network of the atmospheric pressure net ring water system. This kind of reduction and pressure reduction operation can achieve the purpose of reducing energy consumption and water volume, and realize economic benefits.
表1 各实施例的实验结果及对比Table 1 Experimental results and comparison of each embodiment
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