Bioelectrochemical enhanced treatment system and method for coking wastewater
A technology of bioelectrochemistry and coking wastewater, applied in the direction of electrochemical and biological combination treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of high concentration of organic matter in coking wastewater, difficult treatment, low biodegradability, etc. Achieve the effects of compact layout, improved removal efficiency, and reasonable and flexible settings
Pending Publication Date: 2021-12-03
CISDI ENG CO LTD
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Problems solved by technology
[0003] In view of the shortcomings of the current coking wastewater treatment technology, the purpose of the present invention is to provide a bioelectrochemical enhanced treatment system and method for coking wastewater, which is used to solve the problems of high concentration of organic matter, low biodegradability and difficult treatment in coking wastewater in the prior art
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Embodiment 1
[0044] like figure 1 As shown, this embodiment provides a bioelectrochemical enhanced treatment system for coking wastewater, including a pretreatment unit, a biochemical treatment unit, and an advanced treatment unit, wherein the pretreatment unit includes an accident pool, a grease trap, and a regulating pool connected in sequence, Among them, the accident pool is only used when an accident occurs, and the waste water enters the grease trap directly under normal circumstances. Under normal circumstances, such as coke oven failure, ammonia distillation and desulfurization, etc. failure or maintenance, it is necessary to use the emergency pool to temporarily store coking wastewater, and then enter the grease trap after returning to normal operation. The biochemical treatment unit includes anoxic tank, bioelectrochemical treatment tank, aerobic tank, and primary sedimentation tank connected in sequence; the advanced treatment unit includes flocculation reaction sedimentation ta...
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The invention discloses a bioelectrochemical enhanced treatment system and method for coking wastewater. The system comprises a pretreatment unit, a biochemical treatment unit and a deep treatment unit, the pretreatment unit comprises an accident tank, an oil separation tank and an adjusting tank, the biochemical treatment unit comprises an anoxic tank, a bioelectrochemical treatment tank, an aerobic tank and a primary precipitation tank, and the deep treatment unit comprises a flocculation reaction precipitation tank, a secondary precipitation tank and a clean water tank; and the accident tank, the oil separation tank, the adjusting tank, the anoxic tank, the bioelectrochemical treatment tank, the aerobic tank, the primary precipitation tank, the flocculation reaction precipitation tank, the secondary precipitation tank and the clean water tank are communicated in sequence. By adopting a bioelectrochemical treatment strengthening mode, the pollutant removal efficiency, especially the removal efficiency of refractory organics, can be remarkably improved, and meanwhile, each treatment unit is compact in arrangement and reasonable and flexible in arrangement.
Description
technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a bioelectrochemical enhanced treatment system and method for coking wastewater. Background technique [0002] Coking wastewater is industrial organic wastewater produced in the process of coal high-temperature dry distillation, gas purification, by-product recovery and refining. Its chemical composition is extremely complex, including petroleum, volatile phenol, ammonia nitrogen, sulfide, cyanide, thiocyanide, and polycyclic aromatic hydrocarbons. and heterocyclic compounds, etc. High-concentration ammonia-nitrogen substances contained in coking wastewater, trace amounts of highly toxic CN - 、SCN - As well as tars, naphthalene, etc., all have inhibitory effects on microorganisms, and are typical biodegradable organic wastewater. Therefore, the biochemical treatment unit of coking wastewater should be strengthened as much as possible to improve the removal efficie...
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IPC IPC(8): C02F9/14C02F101/16C02F101/30C02F103/36
CPCC02F9/00C02F2001/007C02F1/5236C02F1/56C02F3/005C02F3/302C02F2101/30C02F2101/16C02F1/40C02F2103/365
Inventor 周山罡王立
Owner CISDI ENG CO LTD