Treatment process of industrial wastewater from beet sugar industry
A technology for industrial wastewater and treatment process, which is applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc. And other issues
Inactive Publication Date: 2012-11-07
李婉
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Problems solved by technology
Among the above-mentioned processes, some of the treatment effects are difficult to guarantee, while others are complicated to operate, which is generally unsatisfactory.
Method used
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Embodiment 1
[0051] In order to verify a kind of beet sugar industrial wastewater treatment process of the present invention, the wastewater of COFCO Tunhe Qitai Sugar Company was treated. The effluent water quality of each step of the process is shown in Table 1 below. It can be seen that the final water COD cr It is 69.6mg / L, reaching the GB8978-1996 emission standard.
[0052] Table 1. CODcr and removal rate of each step of the process
[0053]
[0054] The technical feature of the present invention is that firstly, effective pretreatment is carried out on sugar beet sugar wastewater, and then the traditional technology (such as UBF pool, aerobic biochemical pool, etc.) is improved or strengthened. This process is easy to operate and stable, and it is an advanced treatment technology suitable for my country's national conditions.
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Abstract
The invention discloses a treatment process of industrial wastewater from a beet sugar industry, comprising the following process flow: allowing washing water to pass through a vortex-type grit chamber for mud-water separation and then enter into complex wastewater, allowing pulp press water to pass through a horizontal oscillating screen for solid-liquid separation and then enter into complex wastewater, allowing complex wastewater to enter into a grid water collecting well, lifting complex wastewater by the use of a water pump to a primary settling tank for settling, allowing complex wastewater to enter into a hydrolysis-acidification pool and a UBF pool, wherein the content of organic matters in the wastewater is substantially reduced after wastewater successively undergoes acid-producing and methane-producing hydrolysis two-phase anaerobic reaction, allowing wastewater to enter an activated sludge-biofilm co-exist system for aerobic biochemical treatment, and finally performing secondary sedimentation. CODcr of an effluent is lower than 100mg / L, and each index meets the primary standard in ''sewage comprehensive emission standard '' (GB8978-1996). The technology provided by the invention has advantages of simple operation, low operation cost, stable operation and the like.
Description
technical field [0001] The invention relates to a treatment process for sugar beet sugar industrial wastewater, which belongs to the technical field of environmental protection. Background technique [0002] Beet sugar industry is one of the basic industries in our country, widely distributed in the northern part of our country. The beet sugar industry is a major player in drainage, and if the wastewater is not treated in time, it will seriously pollute the ecological environment. Sugar beet sugar industry wastewater mainly comes from washing water generated during raw material pretreatment, meal pressing water generated during the process, washing and filtering mud water, and other miscellaneous water. Their common feature is that they have a large solid content (SS up to 10g / L or more), and a high content of dissolved organic matter (CODcr up to 5-6g / L), which is a typical high-concentration organic wastewater. The difference is that the solids in the press water are bee...
Claims
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IPC IPC(8): C02F9/14C02F3/30
Inventor 李婉
Owner 李婉