An integrated treatment system for various sewage

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a multiple sewage integrated treatment system, comprising a first sewage treatment system, a second sewage treatment system and a sludge pool; the first sewage treatment system is used to treat domestic sewage and separate the domestic sewage into sludge and intermediate water, the first sewage treatment system discharges the intermediate water into the second sewage treatment system, and the first sewage treatment system discharges the sludge into the sludge pool; the second sewage treatment system is used to treat initial rainwater, production wastewater, industrial wastewater, circulating water drainage and intermediate water formed after treatment by the first sewage treatment system, and the domestic sewage is pre-treated by the first sewage treatment system and then merged into the second sewage treatment system, so as to achieve mixed centralized treatment with other sewage, thereby improving the sewage treatment efficiency and reducing the space occupied by the overall treatment equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an integrated treatment system for multiple sewage. Background Art

[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge into a water body or reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering, and is increasingly entering the daily lives of ordinary people.

[0003] The main difficulty in sewage treatment lies in the fact that sewage sources are diverse, and sewage from different sources contains different substances. If they are mixed, the sewage quality will fluctuate greatly, thereby increasing the difficulty of treatment. Since domestic sewage contains a large number of microorganisms, on the one hand, it is easy to breed a large number of pathogens. On the other hand, if it is mixed with other sewage, it is difficult to predict whether the microorganisms and other pollutants will react, thereby increasing the difficulty of treatment.

[0004] The existing sewage treatment technology is relatively simple and low-cost, and can only perform basic treatment on simple sewage. Different sewage requires different treatment systems, which increases the occupied area of ​​the equipment and reduces the treatment efficiency. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in order to overcome the problems in the prior art that the sources of sewage are diverse, sewage from different sources contains different substances, and if they are mixed, it will cause large fluctuations in sewage quality, thereby increasing the difficulty of treatment, and the sewage treatment technology is relatively simple and low in cost, and can only perform basic treatment on simple sewage, a multi-sewage integrated treatment system is provided.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a multi-sewage integrated treatment system, including a first sewage treatment system, a second sewage treatment system and a sludge pool;

[0007] A first sewage treatment system, which is used to treat domestic sewage and separate the domestic sewage into sludge and intermediate water, the first sewage treatment system discharges the intermediate water into the second sewage treatment system, and the first sewage treatment system discharges the sludge into a sludge pool;

[0008] a second sewage treatment system, which is used to treat initial rainwater, production wastewater, industrial wastewater, circulating water drainage and intermediate water formed after treatment by the first sewage treatment system. The second sewage treatment system includes a wastewater collection tank, a reaction unit, a filtering unit, a fresh water tank and a concentrated water tank. The wastewater collection tank is used to collect initial rainwater, production wastewater, industrial wastewater, circulating water drainage and intermediate water formed after treatment by the first sewage treatment system and discharge them into the reaction unit for reaction, thereby obtaining reaction water and sludge. The sludge generated by the reaction unit enters the sludge tank, and the reaction water of the reaction unit enters the filtering unit. The filtering unit is used to filter the reaction water of the reaction unit to obtain fresh water and concentrated water. The fresh water generated by the filtering unit enters the fresh water tank, and the concentrated water generated by the filtering unit enters the concentrated water tank. The domestic sewage is pre-treated by the first sewage treatment system and then merged into the second sewage treatment system, so as to achieve mixed centralized treatment with other sewage, thereby improving the sewage treatment efficiency and reducing the space occupied by the overall treatment equipment;

[0009] Through the design of the first sewage treatment system, the second sewage treatment system and the sludge pool, the solid products and liquid products in the sewage can be classified and treated, thereby improving the treatment efficiency.

[0010] In order to solve the problem of how to arrange the first sewage treatment system, the first sewage treatment system further includes an A / O biochemical treatment tank, a collection tank, an integrated biochemical MBR membrane bioreactor tank and a sterilization tank. The discharge port of the A / O biochemical treatment tank is connected to the feed port of the collection tank, the discharge port of the collection tank is connected to the feed port of the integrated biochemical MBR membrane bioreactor tank, the integrated biochemical MBR membrane bioreactor tank is connected to the microbial degradation enzyme addition component, the sludge outlet of the integrated biochemical MBR membrane bioreactor tank is connected to the feed port of the sludge tank, the water outlet of the integrated biochemical MBR membrane bioreactor tank is connected to the feed port of the sterilization tank, and the water outlet of the sterilization tank is connected to the feed port of the wastewater collection tank.

[0011] In order to solve the problem of how to remove impurities in mixed sewage in the reaction unit, the reaction unit further includes a neutralization reaction tank, a coagulation and flocculation tank, a deep oxidation tank and an inclined plate sedimentation tank.

[0012] The feed inlet of the neutralization reaction tank is connected to the discharge outlet of the wastewater collection tank, and the neutralization reaction tank is connected to the pH adjustment component.

[0013] The feed inlet of the coagulation and flocculation tank is connected to the discharge port of the neutralization reaction tank, and the coagulation and flocculation tank is connected to the PAC+PAM+FeSO3 dosing component.

[0014] The feed inlet of the deep oxidation tank is connected to the discharge outlet of the coagulation and flocculation tank, and the deep oxidation tank is connected to the H2O2 dosing component.

[0015] The feed inlet of the inclined plate sedimentation tank is connected to the discharge port of the deep oxidation tank, the mud outlet of the inclined plate sedimentation tank is connected to the sludge tank, and the water outlet of the inclined plate sedimentation tank is connected to the filter unit.

[0016] In order to solve the problem of how to arrange the filtration unit, the filtration unit further includes an intermediate water pool, a multi-media filter, an activated carbon filter, an ultrafiltration device, an ultrafiltration water tank and an RO reverse osmosis device.

[0017] The feed inlet of the intermediate water tank is connected to the outlet of the reaction unit.

[0018] The feed port of the multi-media filter is connected to the discharge port of the intermediate water tank, and the multi-media filter is connected to the NaOCl input component.

[0019] The feed port of the activated carbon filter is connected to the discharge port of the multi-media filter, and the activated carbon filter is connected to the hydrochloric acid input component.

[0020] The feed inlet of the ultrafiltration device is connected to the discharge port of the activated carbon filter, and the ultrafiltration device is connected to the NaOH input component.

[0021] The feed inlet of the ultrafiltration water tank is connected to the discharge outlet of the ultrafiltration device.

[0022] The feed inlet of the RO reverse osmosis device is connected to the discharge port of the ultrafiltration water tank, the RO reverse osmosis device is connected to the residual chlorine reducing agent input component and the scale inhibitor input component, the fresh water outlet of the RO reverse osmosis device is connected to the fresh water tank, and the concentrated water outlet of the RO reverse osmosis device is connected to the concentrated water tank.

[0023] It further comprises a RO reverse osmosis device connected to a membrane sterilizer input component and a membrane cleaning agent input component,

[0024] When the RO membrane of the RO reverse osmosis device is cleaned, the cleaning water of the RO reverse osmosis device is discharged into the concentrated water tank.

[0025] The method further comprises: backwashing water of the multimedia filter is returned to the reaction unit.

[0026] It further includes backwashing water of the activated carbon filter backflowing to the reaction unit.

[0027] The beneficial effects of the utility model are as follows: the utility model provides a multi-sewage integrated treatment system, which realizes mixed centralized treatment with other sewage by pre-treating domestic sewage in the first sewage treatment system and then collecting it into the second sewage treatment system, thereby improving the sewage treatment efficiency and reducing the space occupied by the overall treatment equipment;

[0028] Through the design of the first sewage treatment system, the second sewage treatment system and the sludge pool, the solid products and liquid products in the sewage can be classified and treated, thereby improving the treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Figure 1 It is a structural schematic diagram of the utility model.

[0031] In the figure: 1, the first sewage treatment system, 11, A / O biochemical treatment tank, 12, collection tank, 13, integrated biochemical MBR membrane biological reactor tank, 14, sterilization tank;

[0032] 2. Second sewage treatment system, 21. Wastewater collection tank, 22. Reaction unit, 221. Neutralization reaction tank, 222. Coagulation and flocculation tank, 223. Deep oxidation tank, 224. Inclined plate sedimentation tank, 23. Filtration unit, 231. Intermediate water tank, 232. Multi-media filter, 233. Activated carbon filter, 234. Ultrafiltration device, 235. Ultrafiltration water tank, 236. RO reverse osmosis device, 24. Fresh water tank, 25. Concentrated water tank;

[0033] 3. Sludge pool. DETAILED DESCRIPTION

[0034] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0035] like Figure 1 It is a structural schematic diagram of the utility model, a multi-sewage integrated treatment system, including a first sewage treatment system 1, a second sewage treatment system 2 and a sludge pool 3;

[0036] like Figure 1 As shown, the first sewage treatment system 1 is used to treat domestic sewage and separate the domestic sewage into sludge and intermediate water. The first sewage treatment system 1 discharges the intermediate water into the second sewage treatment system 2, and the first sewage treatment system 1 discharges the sludge into the sludge pool 3.

[0037] like Figure 1As shown, the first sewage treatment system 1 includes an A / O biochemical treatment tank 11, a collection tank 12, an integrated biochemical MBR membrane biological reaction tank 13 and a sterilization tank 14. The discharge port of the A / O biochemical treatment tank 11 is connected to the feed port of the collection tank 12. The A / O biochemical treatment tank 11 can degrade organic pollutants in domestic sewage. The discharge port of the collection tank 12 is connected to the feed port of the integrated biochemical MBR membrane biological reaction tank 13. The integrated biochemical MBR membrane biological reaction tank 13 and the microbial degradation The enzyme dosing component is connected, the mud outlet of the integrated biochemical MBR membrane biological reactor 13 is connected to the feed port of the sludge tank 3, the water outlet of the integrated biochemical MBR membrane biological reactor 13 is connected to the feed port of the sterilization tank 14, the water outlet of the sterilization tank 14 is connected to the feed port of the wastewater collection tank 21, the integrated biochemical MBR membrane biological reactor 13 can also be connected to the municipal domestic sewage network, the sterilization tank 14 adopts sodium hypochlorite for sterilization, and the sterilization tank 14 is used to treat bacteria and other microorganisms in the intermediate water.

[0038] like Figure 1 As shown, the second sewage treatment system 2 is used to treat initial rainwater, production wastewater, industrial wastewater, circulating water drainage and intermediate water formed after treatment by the first sewage treatment system 1. The second sewage treatment system 2 includes a wastewater collection tank 21, a reaction unit 22, a filtering unit 23, a fresh water tank 24 and a concentrated water tank 25. The wastewater collection tank 21 is used to collect initial rainwater, production wastewater, industrial wastewater, circulating water drainage and intermediate water formed after treatment by the first sewage treatment system 1 and discharge them into the reaction unit 22 for reaction, thereby obtaining reaction water and sludge. The sludge generated by the reaction unit 22 enters the sludge tank 3, and the reaction water of the reaction unit enters the filtering unit 23. The filtering unit 23 is used to filter the reaction water of the reaction unit 22 to obtain fresh water and concentrated water. The fresh water generated by the filtering unit 23 enters the fresh water tank 24, and the concentrated water generated by the filtering unit 23 enters the concentrated water tank 25.

[0039] like Figure 1 As shown, the reaction unit 22 includes a neutralization reaction tank 221, a coagulation and flocculation tank 222, a deep oxidation tank 223 and an inclined plate sedimentation tank 224.

[0040] The feed inlet of the neutralization reaction tank 221 is connected to the discharge port of the wastewater collection tank 21, and the neutralization reaction tank 221 is connected to a pH adjustment component, which is used to add HCl and NaOH into the neutralization reaction tank 221 to adjust the pH of the wastewater.

[0041] The feed inlet of the coagulation and flocculation tank 222 is connected to the discharge port of the neutralization reaction tank 221, and the coagulation and flocculation tank 222 is connected to the PAC+PAM+FeSO3 addition component. The coagulation and flocculation tank 222 refers to the clean water tank that completes the flocculation process, in order to create suitable hydraulic conditions so that particles with flocculation properties can aggregate in mutual contact to form larger flocs.

[0042] The feed inlet of the deep oxidation tank 223 is connected to the discharge port of the coagulation and flocculation tank 222, and the deep oxidation tank 223 is connected to the H2O2 adding component. A filler is set in the aeration tank and used as a carrier of the biofilm. The wastewater to be treated flows through the filler at a certain flow rate after being oxygenated and contacts with the biofilm. The biofilm and the suspended activated sludge work together to purify the wastewater.

[0043] The feed inlet of the inclined plate sedimentation tank 224 is connected to the discharge port of the deep oxidation tank 223, the mud outlet of the inclined plate sedimentation tank 224 is connected to the sludge tank 3, the water outlet of the inclined plate sedimentation tank 224 is connected to the filter unit 23, and there is a very shallow sedimentation tank between every two parallel inclined plates of the inclined plate sedimentation tank 224, so that the treated water (or wastewater) and the settled sludge can move against each other and separate in the shallow sedimentation layer. According to the force of their mutual movement, they can be divided into three different separation modes: co-directional flow, counter-directional flow and lateral flow. The inclined plate sedimentation tank uses the "shallow sedimentation" principle to shorten the particle sedimentation distance, thereby shortening the sedimentation time, and increasing the sedimentation area of ​​the sedimentation tank, thereby improving the treatment efficiency.

[0044] like Figure 1 As shown, the filtration unit 23 includes an intermediate water pool 231, a multi-media filter 232, an activated carbon filter 233, an ultrafiltration device 234, an ultrafiltration water tank 235 and a RO reverse osmosis device 236.

[0045] The feed inlet of the intermediate water tank 231 is connected to the water outlet of the reaction unit 22, and the intermediate water tank 231 is used for temporarily storing sewage.

[0046] The feed port of the multi-media filter 232 is connected to the discharge port of the intermediate water tank 231, the multi-media filter 232 is connected to the NaOCl input component, and the backwash water of the multi-media filter 232 flows back to the neutralization reaction tank 221 of the reaction unit 22. The multi-media filter uses two or more filter media to pass water with high turbidity through a certain thickness of granular or non-granular material under a certain pressure, thereby effectively removing suspended impurities and clarifying the water.

[0047] The feed port of the activated carbon filter 233 is connected to the discharge port of the multi-media filter 232 , the activated carbon filter 233 is connected to the hydrochloric acid input component, and the backwash water of the activated carbon filter 233 flows back to the neutralization reaction tank 221 of the reaction unit 22 .

[0048] The feed port of the ultrafiltration device 234 is connected to the discharge port of the activated carbon filter 233, and the ultrafiltration device 234 is connected to the NaOH input component. The ultrafiltration device is a pressurized membrane separation technology, that is, under a certain pressure, small molecular solutes and solvents are allowed to pass through a special membrane with a certain pore size, while large molecular solutes cannot pass through and remain on one side of the membrane, thereby partially purifying the large molecular substances. The ultrafiltration device 234 heats NaOH when cleaning its ultrafiltration membrane, and the sludge generated after cleaning is discharged into the sludge pool 3.

[0049] The feed inlet of the ultrafiltration water tank 235 is connected to the discharge outlet of the ultrafiltration device 234 .

[0050] The feed port of the RO reverse osmosis device 236 is connected to the discharge port of the ultrafiltration water tank 235, the RO reverse osmosis device 236 is connected to the residual chlorine reducing agent input component and the scale inhibitor input component, the fresh water outlet of the RO reverse osmosis device 236 is connected to the fresh water tank 24, and the concentrated water outlet of the RO reverse osmosis device 236 is connected to the concentrated water tank 25. The reverse osmosis device passes the raw water through a fine filter, a granular activated carbon filter, a compressed activated carbon filter, etc., and then pressurizes it through a pump, using a reverse osmosis membrane (RO membrane) with a pore size of 1 / 10000μm to convert higher concentration water into low concentration water, and at the same time completely isolates a large amount of impurities mixed into the water, such as industrial pollutants, heavy metals, bacteria, viruses, etc.

[0051] The RO reverse osmosis device 236 is connected to the membrane sterilizer input component and the membrane cleaning agent input component.

[0052] When the RO membrane of the RO reverse osmosis device 236 is cleaned, the cleansing water of the RO reverse osmosis device 236 is discharged into the concentrated water tank 25 .

[0053] The fresh water in the fresh water tank 24 can be discharged into the industrial water tank in the production area for reuse. The concentrated water in the concentrated water tank 25 is used after the desalination process, and the excess is sent to the sewage treatment plant. The sludge in the sludge tank 3 is filtered through the plate and frame filter press in the desalination process in the production area.

[0054] By pre-treating domestic sewage in the first sewage treatment system 1 and then collecting it into the second sewage treatment system 2, it can be mixed with other sewage for centralized treatment, thereby improving the sewage treatment efficiency and reducing the space occupied by the overall treatment equipment;

[0055] Through the design of the first sewage treatment system 1, the second sewage treatment system 2 and the sludge pool 3, the solid products and liquid products in the sewage can be classified and treated, thereby improving the treatment efficiency.

[0056] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A system for integrated treatment of multiple sewage, characterized in that: It comprises a first sewage treatment system (1), a second sewage treatment system (2) and a sludge pool (3); A first sewage treatment system (1) is used to treat domestic sewage and separate the domestic sewage into sludge and intermediate water, wherein the first sewage treatment system (1) discharges the intermediate water into a second sewage treatment system (2), and the first sewage treatment system (1) discharges the sludge into a sludge tank (3); The second sewage treatment system (2) is used to treat initial rainwater, production wastewater, industrial wastewater, circulating water drainage and intermediate water formed after treatment by the first sewage treatment system (1). The second sewage treatment system (2) comprises a wastewater collection tank (21), a reaction unit (22), a filtering unit (23), a fresh water tank (24) and a concentrated water tank (25). The wastewater collection tank (21) is used to collect initial rainwater, production wastewater, industrial wastewater, circulating water drainage and intermediate water formed after treatment by the first sewage treatment system (1) and discharge them into the reaction unit (22) for reaction, thereby obtaining reaction water and sludge. The sludge generated by the reaction unit (22) enters the sludge tank (3). The reaction water of the reaction unit enters the filtering unit (23). The filtering unit (23) is used to filter the reaction water of the reaction unit (22) to obtain fresh water and concentrated water. The fresh water generated by the filtering unit (23) enters the fresh water tank (24), and the concentrated water generated by the filtering unit (23) enters the concentrated water tank (25).

2. The integrated sewage treatment system according to claim 1, characterized in that: The first sewage treatment system (1) comprises an A / O biochemical treatment tank (11), a collection tank (12), an integrated biochemical MBR membrane bioreactor tank (13) and a sterilization tank (14); the discharge port of the A / O biochemical treatment tank (11) is connected to the feed port of the collection tank (12); the discharge port of the collection tank (12) is connected to the feed port of the integrated biochemical MBR membrane bioreactor tank (13); the integrated biochemical MBR membrane bioreactor tank (13) is connected to a microbial degradation enzyme dosing component; the sludge outlet of the integrated biochemical MBR membrane bioreactor tank (13) is connected to the feed port of the sludge tank (3); the water outlet of the integrated biochemical MBR membrane bioreactor tank (13) is connected to the feed port of the sterilization tank (14); and the water outlet of the sterilization tank (14) is connected to the feed port of the wastewater collection tank (21).

3. The integrated sewage treatment system according to claim 1, characterized in that: The reaction unit (22) includes a neutralization reaction tank (221), a coagulation and flocculation tank (222), a deep oxidation tank (223) and an inclined plate sedimentation tank (224). The feed inlet of the neutralization reaction tank (221) is connected to the discharge outlet of the wastewater collection tank (21), and the neutralization reaction tank (221) is connected to the pH adjustment component. The feed inlet of the coagulation and flocculation tank (222) is connected to the discharge outlet of the neutralization reaction tank (221), and the coagulation and flocculation tank (222) is connected to the PAC+PAM+FeSO3 dosing component. The feed inlet of the deep oxidation tank (223) is connected to the discharge outlet of the coagulation and flocculation tank (222), and the deep oxidation tank (223) is connected to the H2O2 dosing component. The feed inlet of the inclined plate sedimentation tank (224) is connected to the discharge outlet of the deep oxidation tank (223), the sludge outlet of the inclined plate sedimentation tank (224) is connected to the sludge tank (3), and the water outlet of the inclined plate sedimentation tank (224) is connected to the filtration unit (23).

4. The integrated sewage treatment system according to claim 1, characterized in that: The filtration unit (23) comprises an intermediate water pool (231), a multi-media filter (232), an activated carbon filter (233), an ultrafiltration device (234), an ultrafiltration water tank (235), and a RO reverse osmosis device (236). The feed inlet of the intermediate water tank (231) is connected to the water outlet of the reaction unit (22). The feed port of the multi-media filter (232) is connected to the discharge port of the intermediate water tank (231), and the multi-media filter (232) is connected to the NaOCl input component. The feed port of the activated carbon filter (233) is connected to the discharge port of the multi-media filter (232), and the activated carbon filter (233) is connected to the hydrochloric acid input component. The feed inlet of the ultrafiltration device (234) is connected to the discharge outlet of the activated carbon filter (233), and the ultrafiltration device (234) is connected to the NaOH input component. The feed inlet of the ultrafiltration water tank (235) is connected to the discharge outlet of the ultrafiltration device (234). The feed inlet of the RO reverse osmosis device (236) is connected to the discharge port of the ultrafiltration water tank (235), the RO reverse osmosis device (236) is connected to the residual chlorine reducing agent input component and the scale inhibitor input component, the fresh water outlet of the RO reverse osmosis device (236) is connected to the fresh water tank (24), and the concentrated water outlet of the RO reverse osmosis device (236) is connected to the concentrated water tank (25).

5. The integrated sewage treatment system according to claim 4, characterized in that: The RO reverse osmosis device (236) is connected to a membrane sterilizer input component and a membrane cleaning agent input component. When the RO membrane of the RO reverse osmosis device (236) is cleaned, the cleaning water of the RO reverse osmosis device (236) is discharged into the concentrated water tank (25).

6. The integrated treatment system for multiple types of sewage as claimed in claim 4, characterized in that: The backwash water of the multimedia filter (232) flows back to the reaction unit (22).

7. The integrated treatment system for multiple types of sewage as claimed in claim 4, characterized in that: The backwash water of the activated carbon filter (233) flows back to the reaction unit (22).

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