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Efficient compound biological treatment device
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A biological treatment and composite technology, applied in the field of water treatment, can solve the problems of lack of reasonable treatment methods for complex industrial wastewater, and achieve the effect of improving oxygen utilization efficiency, improving treatment efficiency and maintaining activity
Inactive Publication Date: 2011-08-10
TONGJI UNIV +1
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[0015] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an improved compound biological treatment device, which can be a beneficial supplement for the lack of reasonable treatment methods for complex industrial wastewater in the existing sewage treatment technology
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Embodiment 1
[0041] The main equipment of the present invention comprises a centrifugal blower 7, a water inlet pipe 1, a water distributor 2, a water quality improvement pool 3 connected to the water inlet pipe 1, the outlet water of the water quality improvement pool enters a mixing pool 10, and a partition wall 9 is arranged in the mixing pool, and the water quality improvement pool After the outlet water 8 is mixed with the outlet water of the reflux tank 10 and the reflux sedimentation sludge 26 in the mixing tank 10, it is sprayed out by the jet water pump 12 through the jet device 13, and the blast aeration rate is controlled by the valve 32 (including water entrainment and aeration). A variety of forms), fully react in the biochemical pool 17, sleeve 14 is arranged in the biochemical pool, and the outlet water enters in the degassing pool 22 through the outlet tank 29, after degassing, enters the settling tank 25 after sedimentation, and discharges up to the standard. The water qual...
Embodiment 2
[0044] Take a coal gasification production process wastewater, the wastewater color is 2000-2500 times, the COD concentration is 2500-3000mg / L, the BOD / COD is less than 0.1, the ammonia nitrogen concentration is 300-400mg / L, and the volatile phenol concentration is 400-500mg / L , after the treatment of the present invention, the total residence time is 36-48h, the effluent COD is 200-300mg / L, the ammonia nitrogen concentration is 12-15mg / L, the chroma is less than 100 times, the volatile phenol concentration is less than 4mg / L, and the whole system operates stably For 3 months, the outdoor temperature is 0-40°C, and the sludge has almost no activity and is not affected by the impact of wastewater load. Using a conventional biological treatment system, the sludge system is not operating normally due to the high load of volatile phenol concentration in the microbial system, and the reflux ratio must be 10:1-20:1 to meet the stable operation of the system.
Embodiment 3
[0046] Take certain pharmaceutical wastewater, COD concentration is 25000~30000mg / L, BOD / COD is 0.2~0.3, after the system treatment of the present invention, when the total residence time is 48~64h, the COD of the treated water is 200~250mg / L, remove The rate reaches 99%, and the whole system runs stably, reflecting the high efficiency of the whole system. The conventional activated sludge method is difficult to form a stable sludge system, which is easily inhibited by the toxicity of wastewater, and the COD of the effluent exceeds 500mg / L.
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Abstract
The present invention discloses a compound biological treatment device which comprises a centrifugal blower 7, a water inlet pipe 1, a water quality improving pool 3, a mixing pool 10, a biochemical pool 17, a degassing pool 22 and a settling pool 25. The water quality improving pool 3 and the mixing pool 10 containing a water distribution plate are additionally arranged in front of the biochemical pool 17 ; the biochemical pool 17 is connected with the degassing pool 22 by a water outlet trough 29; the degassing pool 22 is connected with the settling pool 25 by a pipeline 24; the biochemical pool 17 is internally and simultaneously provided with a jet device 13, and an aeration hose 30 and a valve 32 that are connected with the centrifugal blower 7; the biochemical pool 17 is internally provided with two overflowing troughs, wherein one overflowing trough is a returning trough 28 with the yielding water entering the mixing pool 10 and being connected with the feed water; the other overflowing trough is a water reflowing trough 29 with the yielding water being connected with the degassing pool 22 so as to remove the micro-bubbles in the mud which enters the settling pool 25; and the mud in the settling pool 25 flows back to the mixing pool 10 and is homogenized with feed water. In the invention, the device has the advantages of reducing energy consumption, improving processing efficiency of high-concentration industrial wastewater and facilitating maintenance and management, and the like.
Description
technical field [0001] The invention belongs to the field of water treatment, relates to the industry of industrial water treatment, in particular to a composite biological treatment device. Background technique [0002] In the increasingly mature field of water treatment, wastewater with good biochemical properties, such as domestic sewage, alkaline dye wastewater, oily wastewater, food industry, wine industry, livestock and poultry wastewater, in view of its good biochemical properties, the traditional method design It can meet its processing requirements, and has also formed a relatively stable and reliable processing method and equipment selection. [0003] However, the high-concentration and refractory industrial wastewater in the actual situation has become a thorny problem in the current biological water treatment. Compared with urban domestic sewage, although high-concentration industrial wastewater has less water, it is seriously polluted by organic matter and the ...
Claims
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Application Information
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