Circulating blow-down water treatment system and treatment process
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A technology of circulating sewage and treatment process, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Yield and recovery rate, ensure normal stability, and save water resources
Pending Publication Date: 2021-05-28
ANHUI RESOURCE SAVING & ENVIRONMENTAL TECH CO LTD
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Problems solved by technology
[0006] In order to solve the above technical problems, the present invention provides a circulating sewage treatment process, which solves the technical problem that the industrial circulating sewage process in the prior art cannot treat the domestic sewage in the factory area, resulting in the domestic sewage being transported outside for treatment. This application adds in the pretreatment process The biochemical treatment unit ensures that the effect of sewage pretreatment fully meets the water quality requirements of reverse osmosis. An integrated domestic sewage removal unit is added to remove TN, TP, COD and other components in the sewage, which can ensure the water quality of the ultrafiltration reverse osmosis unit. Normal and stable, ensuring that the effluent indicators of the sewage plant are qualified, reducing the transportation of sewage to achieve zero discharge of sewage, which is conducive to protecting the environment
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Embodiment 1
[0050] A circulating sewage treatment system, including sequentially connected grilles, grit chambers, raw water adjustment tanks, high-efficiency sedimentation tanks, intermediate pools, quartz sand filters, integrated domestic sewage treatment equipment, filtered pools, and self-cleaning filters , ultrafiltration device, pipeline mixer, security filter, RO high-pressure pump, reverse osmosis equipment, reverse osmosis production tank, and the pipeline mixer is also connected with the dosing equipment.
[0051] The treatment process using the above-mentioned circulating sewage treatment system includes the following procedures:
[0052] (1) Water intake process: The raw water enters the grid and the lifting pump station through gravity flow, and enters the grit chamber through the pump lifting method, where the coarse and heavy sand is precipitated and removed, and the effluent enters the raw water adjustment tank for homogenization.
[0053] (2) Sewage treatment process: the...
Embodiment 2
[0065] A circulating sewage treatment process, similar to Example 1, the difference is that in the step (1), when the water body passes through the grit chamber in the water inlet process, the flow rate is 0.1m / s, and the residence time is 40s.
Embodiment 3
[0067] A circulating sewage treatment process, similar to Example 1, the difference is that in the step (1), when the water body passes through the grit chamber in the water inlet process, the flow rate is 0.2m / s, and the residence time is 50s.
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Abstract
The invention provides a circulating blow-down water treatment system and a treatment process, and the treatment process comprises a water inlet procedure: raw water enters a grid and / or a lifting pump station, and after the raw water enters a grit chamber, effluent water enters a raw water adjusting tank; a sewage treatment process: the water enters an efficient sedimentation tank through a raw water regulating tank for treatment, then enters a quartz sand filter for treatment and enters domestic sewage treatment integrated equipment, the treated water sequentially enters a filtered water tank and a self-cleaning filter, and the water treated by the self-cleaning filter enters an ultrafiltration device; the filtered water enters a pipeline mixer for mixing reaction and then enters a security filter, then the water body is subjected to reverse osmosis desalination treatment, and the effluent enters a reverse osmosis water producing pool; and a sludge treatment process: sludge water treated by the high-efficiency sedimentation tank is conveyed to a sewage treatment station, is subjected to sludge conditioning and / or high-pressure plate frame dehydration, and then subjected to outward transportation treatment. According to the system, the problem of domestic sewage discharge is solved, water resources are saved, the environment is protected, zero discharge of sewage is realized, and full utilization of energy is achieved.
Description
technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a circulating sewage treatment system and treatment process. Background technique [0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements of a certain water body for drainage or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, industry, urban landscape, medical treatment, catering, etc., while industrial circulating sewage contains too many elements and often contains a small amount of domestic sewage. [0003] The core of industrial circulating sewage treatment plants is desalination. At present, the most widely used desalination process for industrial wastewater treatment is reverse osmosis technology. Due to the high requirements of the reverse osmosis membrane on the influent, when the reverse osmosis technology is used for advanced treatment...
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Application Information
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