CN201250152Y - City reclaimed water advanced treatment testing device - Google Patents

Abstract

The utility model discloses a simulation test device for production equipment, in particular to a test device for advanced treatment of urban reclaimed water. It includes a chemical treatment device and its subordinate multimedia filtration treatment device, wherein the chemical treatment device includes a coagulation mixing tank through which reclaimed water passes sequentially, a clarification first reactor and a clarification second reactor, and the coagulation mixing tank includes The heating device on the upper part, the pipeline connected to the dosing device and the compressed air pipeline, and the reclaimed water pipeline on the lower side, where a corrosion-resistant centrifugal pump is installed on the reclaimed water pipeline and between the coagulation mixing tank and the clarification first reactor ; The multi-media filter processing device includes parallel connected multi-media filter, sea sand filter and activated carbon filter. The utility model provides an urban reclaimed water advanced treatment test device highly simulating urban reclaimed water advanced treatment equipment, which saves costs and shortens the evaluation period.

Description

Urban reclaimed water advanced treatment test device

(1) Technical field

The utility model relates to a simulation test device for production equipment, in particular to a test device for advanced treatment of urban reclaimed water.

(2) Background technology

my country is a water-poor country. 60% to 70% of the cities are short of water or facing a crisis of water shortage. The problem of water use has seriously restricted the development of industry. Taking a thermal power plant with a capacity of 1000MW as an example, even if the secondary circulation water supply method is adopted, the water consumption is as high as 1.5-2.0m ³ /s, which is equivalent to the water supply of a medium-sized city with a population of more than 200,000. Most of the water used in thermal power plants is used as cooling water, and using urban sewage as an industrial cooling supplementary water source is currently the first choice for countries around the world to solve the water shortage problem. my country's 10th Five-Year Research Project includes the reuse of urban sewage as industrial cooling water. Therefore, reusing urban sewage as circulating cooling water for thermal power plants will kill two birds with one stone. It not only alleviates the contradiction between supply and demand, but also reduces pollution. The second water source reduces the city's pollutant discharge to the environment and has broad research prospects.

Reuse of reclaimed water is an effective means to solve the shortage of water resources in thermal power plants, and it is also an important condition for new expansion of power plants. At present, in the environmental impact assessment reports of almost all new power plants, the State Environmental Protection Administration clearly requires that the circulating cooling water of power plants use recycled water sources, that is, urban reclaimed water. According to the national standard "Code for Design of Sewage Recycling Engineering" (GB5-335-2002), before the design of reclaimed water recycling project, a medium-scale test of reclaimed water advanced treatment must be carried out, and a reasonable regenerated advanced treatment should be selected based on the test results. However, there is no experimental device for advanced treatment of urban reclaimed water at present, so it is impossible to complete the evaluation of the implementation effect of reclaimed water application. Borrowing existing equipment to conduct experiments will cost huge and the cycle will be long.

(3) Contents of the invention

The utility model aims at the present situation that there is no test device for evaluating the advanced treatment of urban reclaimed water, and provides a test device for the advanced treatment of urban reclaimed water that highly simulates the advanced treatment equipment of reclaimed urban reclaimed water, which saves costs and shortens the evaluation period.

The technical scheme that the utility model adopts is:

The urban reclaimed water advanced treatment test device of the utility model includes a chemical treatment device and its lower multi-media filter treatment device, wherein the chemical treatment device includes a coagulation mixing tank through which the reclaimed water passes sequentially, a clarification first reactor and a clarification second reaction The coagulation mixing tank includes a heating device arranged on its upper part, a pipeline connected to a dosing device and a compressed air pipeline, and a reclaimed water pipeline on the lower part of it, wherein the reclaimed water pipeline and the coagulation mixing tank are connected with the clarification first Corrosion-resistant centrifugal pumps are arranged between the reactors; the multi-media filter treatment device includes parallel connected multi-media filters, sea sand filters and activated carbon filters.

The above experimental device for advanced treatment of urban reclaimed water also includes a biochemical treatment device at the front stage of the chemical treatment device, and the outlet of the biochemical treatment device is connected to the reclaimed water pipeline.

In the above experimental device for advanced treatment of urban reclaimed water, clarified water tanks are provided between the chemical treatment device and the multimedia filtration treatment device, and at the water outlet of the multimedia filtration treatment device.

In the above experimental device for the advanced treatment of reclaimed water in cities, the coagulation mixing tank is connected with at least two pipelines connected to the dosing device, one of which is provided on the water inlet pipe, and the clarification second reactor and its clarification water tank are provided with A line connected to the dosing device. The lower part of the coagulation mixing tank, the clarification first reactor and the clarification second reactor is provided with a sludge pipeline communicated with a self-priming sludge return pump.

The above experimental device for the advanced treatment of reclaimed water in cities, the biochemical treatment device includes the first biochemical processor and the second biochemical processor connected in series, the upper part of both is equipped with the pipeline of the dosing device, and the lower part of the first biochemical treatment is A water inlet is provided, and a sampling door is provided in the middle.

In the above experimental device for advanced treatment of urban reclaimed water, the pipeline of the dosing device is connected with an integrated dosing device.

The urban reclaimed water advanced treatment test device of the utility model simulates the reclaimed water advanced treatment to obtain the application implementation effect report, which includes a coagulation mixing tank and its auxiliary pipelines connected to the dosing device, reclaimed water pipelines, heating devices and compressed air pipelines, As well as clarification of the first reactor and clarification of the second reactor, during normal operation, the three agents of lime, coagulant and coagulant are added to the coagulation mixing tank through the pipeline of the dosing device, and the agents are mixed with reclaimed water and sludge Vigorously mix to promote the growth of small alum flowers. The above-mentioned elements can be added according to actual needs. The test content is different due to the situation of the power plant and the operation of the generator set. The significance of guiding production can be achieved through field tests, and the water source is taken from the local area. For the secondary discharge water of sewage treatment plants, the test is more instructive for reclaimed water projects. After testing, the processing capacity of the advanced treatment test equipment is 1.5T/h, which is designed by completely simulating the technological process of advanced treatment of reclaimed water. The utility model replaces the actual operation by means of the test device, saves the cost and the verification period, and has good use effect. The multi-media filter treatment device of the present utility model is provided with a multi-media filter, a sea sand filter, and an activated carbon filter to simulate a multi-media filter treatment device. The structure is compact with the actual equipment, and it is easy to combine and assemble, and the cost is low.

(4) Description of drawings

Fig. 1 is a structural principle diagram of a specific embodiment of the utility model urban reclaimed water advanced treatment test device.

In the figure: 1. Coagulation mixing tank, 2. Chemical treatment device, 3. Pipeline connected to dosing device, 4. Heating device, 5. Compressed air pipeline, 6. Corrosion-resistant centrifugal pump, 7. Clarification of the first reaction Device, 8. clarification second reactor, 9. clarification water tank, 10. reclaimed water pipeline, 11. self-priming sludge return pump, 12. multi-media filter treatment device, 13. multi-media filter, 14. water inlet Pipeline, 15, sea sand filter, 16, activated carbon filter, 17, water outlet, 18, second biochemical processor, 19, water inlet, 20, sampling door, 21, second biochemical processor.

(5) Specific implementation methods

The structural principle of the present utility model is specifically described below in conjunction with the accompanying drawings of the description:

With reference to accompanying drawing 1 of explanation, present specific embodiment comprises chemical treatment device 2 and its subordinate multimedia filtration treatment device 12, and wherein chemical treatment device comprises the coagulation mixing tank 1 that reclaimed water once passes through, clarification first reactor 7 and clarification The second reactor 8, coagulation and stirring together includes the heating device 4 arranged on its upper part, the pipeline 3 and the compressed air pipeline connected to the dosing device, and the reclaimed water pipeline 10 at the lower part of the reclaimed water pipeline, wherein the reclaimed water pipeline is mixed with the mixed A corrosion-resistant centrifugal pump 6 is arranged between the condensate mixing tank and the clarification first reactor;

The system also includes a biochemical treatment device preceding the chemical treatment device 2 , and the water outlet 17 of the biochemical treatment device is connected to the reclaimed water pipeline 10 . The biochemical treatment device is used to simulate the biochemical test system and is designed with a biological aerated filter (BAF). The biological aerated filter (BAF) uses granular fillers and attached biofilms as the main treatment medium to give full play to biological metabolism, physiological filtration, physical adsorption of biofilms and filler particles, and integrates biological oxidation processes and solid-liquid The separation is integrated, so that the removal of BOD and COD and the nitrification process can be completed in the same unit reactor.

In order to facilitate the sampling of the treatment medium of each device, compared with the actual equipment, this specific embodiment adds a clarified water tank 9 between the chemical treatment device 2 and the multimedia filtration treatment device 12, and the water outlet of the multimedia filtration treatment device. In order to add different medicines in different processes, the coagulation mixing tank 1 is connected with at least two pipelines 3 connected to the dosing device, one of which is provided on the water inlet pipe, and the clarification second reactor 8 and its A pipeline connected to a dosing device is arranged between the clarified water tanks, and the latter can add acid. The lower parts of the coagulation mixing tank 1, clarification first reactor 7, and clarification second reactor 8 are provided with a sludge pipeline connected with a self-priming sludge return pump 11, and the user can turn on the sludge return pump to detect sludge index.

In addition, the biochemical treatment device includes a serially connected first biochemical processor 21 and a second biochemical processor 18, the upper part of which is provided with the pipeline 3 of the dosing device, and the lower part of the first biochemical treatment is provided with a water inlet 19, the middle of which is provided with a sampling door 20. The pipeline 3 of the medicine adding device is connected with an integrated medicine adding device. Two-stage treatment is adopted, and corresponding dosing devices are set up to facilitate the addition and sampling of different medicines.

Claims (7)

1. municipal middle water advanced treatment testing apparatus, it is characterized in that: the multi-medium filtering treatment unit (12) that comprises chemical processing device (2) and its subordinate, wherein chemical processing device comprises the middle water coagulation agitation vat (1) of process successively, clarify first reactor (7) and clarification second reactor (8), the coagulation agitation vat comprises the heating unit (4) that is arranged at its top, the pipeline (3) and the compressed air line that connect chemicals dosing plant, and the intermediate water pipeline of side lower part (10), wherein be provided with corrosion resisting centrifugal pump (6) on the intermediate water pipeline and between coagulation agitation vat and clarification first reactor; The multi-medium filtering treatment unit comprises and the more medium filter (13) that connects, extra large sand filter (15) and charcoal filter (16).

2. municipal middle water advanced treatment experimental installation according to claim 1 is characterized in that: also comprise the biochemical treatment apparatus of described chemical processing device (2) prime, the water outlet of this biochemical treatment apparatus (17) links to each other with described intermediate water pipeline (10).

3. municipal middle water advanced treatment experimental installation according to claim 1 and 2, it is characterized in that: between described chemical processing device (2) and the multi-medium filtering treatment unit (12), and the water outlet of multi-medium filtering treatment unit is provided with clarification water tank (9).

4. municipal middle water advanced treatment experimental installation according to claim 1, it is characterized in that: described coagulation agitation vat (1) is connected at least two pipelines (3) that connect chemicals dosing plant, its water inlet pipe is provided with one, is provided with a pipeline that connects chemicals dosing plant between described clarification second reactor (8) and clarification water tank thereof.

5. municipal middle water advanced treatment experimental installation according to claim 1 is characterized in that: described coagulation agitation vat (1), clarification first reactor (7), clarification second reactor (8) bottom are provided with the mud pipeline that communicates with self-priming sludge reflux pump (11).

6. municipal middle water advanced treatment experimental installation according to claim 2, it is characterized in that: described biochemical treatment apparatus comprises first biochemical treatment equipment (21) and second biochemical treatment equipment (18) of serial connection, both tops are equipped with the pipeline (3) of chemicals dosing plant, first biochemical treatment its underpart then is provided with water-in (19), and its middle part is provided with sampling gate (20).

7. according to claim 4 or 6 described municipal middle water advanced treatment experimental installations, it is characterized in that: the pipeline of described chemicals dosing plant (3) is connected with the integral type chemicals dosing plant.

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