Method for treating nucleic acid waste water
A wastewater treatment and nucleic acid technology, which is applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of inability to propose concentrated water treatment methods, long biochemical time, and failure to meet standards Discharge requirements and other issues, to achieve the effects of small footprint, small amount of residual sludge, and low operating costs
Active Publication Date: 2013-07-17
新环能(晋江)再生资源有限公司
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Problems solved by technology
[0008] Jiangsu Nanjing Membrane Co., Ltd. adopts membrane treatment process, CODcr reaches below 1000mg / l, but the concentration of concentrated water after membrane treatment reaches 30%, and the concentration of concentrated water reaches three times that of raw water, so it is impossible to propose a concentrated water treatment method
[0009] The biochemical process of nucleic acid wastewater is affected by SO 4 2- , polymer caramel and high salt ion interference, resulting in a long biochemical time and the generation of H in the biochemical process 2 S malodorous gas and unable to meet the emission standards
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[0033] Such as figure 1 Shown is a preferred embodiment of the present invention.
[0034] In the first step, the nucleic acid wastewater from the production workshop is sent to the regulating tank 1 through the collection pipe for equalization and homogenization, so as to balance the water quantity and water quality concentration.
[0035] In the second step, the homogenized nucleic acid wastewater is lifted to the two-phase anaerobic reactor 2 by a pump (common equipment, not shown in the figure). The two-phase anaerobic reactor 2 is an anaerobic baffle reaction tank.
[0036] The anaerobic baffle reactor (ABR) is a new type of high-efficiency anaerobic reactor proposed by McCarty et al. of Stanford University in the early 1980s. Several vertical deflectors are set in the reactor to divide the reactor into several reaction chambers in series. Each reaction chamber can be regarded as a relatively independent UASB, so it can be regarded as a series of multiple UASBs in struc...
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The invention discloses a method for treating nucleic acid waste water. The method comprises the following steps of: feeding the nucleic acid waste water into a regulating basin to be homogenized; then feeding the nucleic acid waste water into a two-phase anaerobic reactor, fully hydrolyzing high polymer organic matters and particles into micro molecular organic matters by virtue of a hydrolysis acidification tank, reducing concentration by virtue of a methane producing tank, collecting, utilizing or processing the methane, and ensuring effluent to flow into an activated sludge tank; degrading most organic matters under the action of aerobic microorganisms, and ensuring the effluent to flow into a secondary sedimentation tank; carrying out mud-water separation, wherein one part of sludge at the bottom reflows into the activated sludge tank and the two-phase anaerobic reactor, excess sludge is discharged into the sludge tank, and a supernate flows into a chemical dephosphorization sedimentation tank; adding a ferric salt, a calcium salt, a coagulating agent and a flocculation aid, carrying out solid-liquid separation, ensuring the supernate to flow into a collecting tank, and discharging sludge at the bottom into the sludge tank; ensuring waste water in the collecting tank to flow into a nanofiltration system by virtue of a multi-medium filter tank, discharging final effluent up to the standard, and further concentrating a membrane concentration solution to extract a caramel product. By applying the method disclosed by the invention, pollution is treated, valuable resource is recycled, and resource cyclic utilization is realized.
Description
technical field [0001] The invention relates to a treatment method for nucleic acid wastewater, which belongs to the environmental protection engineering technology. Background technique [0002] The wastewater discharged from ribonucleic acid production has the characteristics of high COD (chemical oxygen demand), high SS (suspended solids) value, low pH value, high viscosity, etc., and contains high concentrations of ammonia nitrogen, phosphate and refractory biodegradable organic matter. The refractory biodegradable organic matter is mainly caramel, which is the essential reason for the extremely difficult treatment of ribonucleic acid wastewater. Caramel is a jelly-like substance composed of volatile and non-volatile low-molecular compounds and non-dialysis high-molecular compounds. The coloring of caramel is the latter, accounting for about 25% of the total solids. The basic composition of caramel odor is the volatile substances of aldehydes and ketones in the above-me...
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IPC IPC(8): C02F9/14C02F3/30C02F3/12C02F1/44C02F1/52
CPCY02W10/10
Inventor 许玉东陈国叶
Owner 新环能(晋江)再生资源有限公司