Leather wastewater treatment system and method

A leather wastewater treatment system technology, applied in animal processing wastewater treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the large fluctuations in water quality and quantity of tannery wastewater, poor leather wastewater treatment effect, Sewage treatment environment is complex and other problems, to achieve the effect of simplifying the microbial denitrification process, reducing sludge production, and improving biodegradability

Pending Publication Date: 2021-11-16
恒臻无锡生物科技有限公司
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AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a leather wastewater treatment system and method, the purpose of which is to solve the problem of tannery wastewater with large fluctuations in water quality and volume, complex components, heavy pollution load, large sludge

Method used

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  • Leather wastewater treatment system and method
  • Leather wastewater treatment system and method
  • Leather wastewater treatment system and method

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0027] Example 1

[0028] Leather wastewater treatment system according to this embodiment, specific technical solutions are as follows:

[0029] Leather wastewater treatment system, comprising a water jet mixed digestive cloth, cloth jets of water are mixed in the digestive system are different microbial agents serve nitrification bacteria. Digestive comprises mixing water jet fabric treatment tank 1, 2 and intermediate sedimentation tank 3, the central processing cell 11 1 is provided with a biofilm, the biofilm 11 treatment tank 12 and jet mixing aeration zone 1 is divided into 13 regions, aeration region 12 is provided with a suction pipe 64 shown in the second jet mixer ejector pipe 62 is connected to the suction digestion zone nitrate solution injection jet mixer 62 mixing jet mixing zone 13, and through the reflux control valve 65 controls the suction nitrification fluid back flow. Pool 2 is connected to the intermediate cell serving cell 4, the intermediate connector 2 poo...

Example Embodiment

[0041] Example 2

[0042] In this embodiment, nitrifying bacteria Delftia tsuruhatensis HT01 base medium is: MgSO4 · 7H2O 0.05g / L; K2HPO41g / L; NaCl 2g / L; FeSO4 · 7H2O 0.4g / L; NaHCO3 1.5g / L; CaCl2 · 2H2O 0.5g / L; trace elements 1mL / L; pure water.

[0043] Trace elements (1L): CuSO4 · 5H2O 0.075g; ZnSO4 · 7H2O 0.3g; CoCl2 · 6H2O 0.375g; MnCl2 · 2H2O 0.3g; EDTA 0.5g; NaMoO4 · 2H2O 0.22g; H3BO4 0.014g; water 1L.

[0044] Conventional carbon source medium: Add 0.4g / L NH4Cl basal medium as the sole nitrogen source, and then were added 2g / L sucrose, glucose, fructose, sodium citrate, sodium succinate, sodium acetate or molasses as the sole carbon source.

[0045] Sewage leather as material, due to the higher salinity of the water (about 20000mg / L) are not suitable for the growth of autotrophic ammonia-oxidizing bacteria, the fluctuation range of the COD and ammonia water during the experiment were 4350 ~ 5355mg / L and 687 ~ 768mg / L. Experiment two rounds, a first se...

Example Embodiment

[0050] Example 3

[0051] Paper Co., Ltd. Xinji leather a leather wastewater using wastewater treatment system and method provided in Example 1, the daily transdermal system for treating wastewater industrial wastewater 1800m3 / d, days before leather wastewater treatment system provided in Example 1 of the embodiment is not input No amount of sludge 60 tons (dry mud) / per day, the amount of primary sedimentation tank PAC 200kg / d, PAM dosage 8kg / d, put into use 40 tons embodiment amount leather sludge wastewater treatment system provided in Example 1 (dry mud) / day, primary sedimentation tank to stop using the PAC, PAM dosage of 5kg / d, pulse anaerobic tank can not only reduce the amount of sludge, it can also reduce the amount of reagent for companies to reduce operating costs.

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Abstract

The invention belongs to the technical field of microbial wastewater treatment, and particularly relates to a leather wastewater treatment system and a method. According to the leather wastewater treatment system and method, the purposes of effective denitrification and sludge reduction in leather wastewater can be achieved, the problem of blockage of inflow water of the jet flow water distribution mixing digestion system is solved, SS in the wastewater can be reduced, the investment is reduced by 60% compared with that of a conventional anaerobic tank, the heterotrophic nitrifying bacterium agent is easy to produce, materials are easy to obtain, the cost is low, the process is simple and economic benefits are huge.

Description

technical field [0001] The invention belongs to the technical field of microbial wastewater treatment, and in particular relates to a leather wastewater treatment system and method. Background technique [0002] With the rapid development of leather industry, tannery wastewater is more and more harmful to the environment. At present, the competition in the market environment is increasingly fierce, and the development potential of leather and its products cannot be ignored. The quality and quantity of tannery wastewater fluctuate greatly, the composition is complex, the pollution load is heavy, and the sludge production is large. It contains organic substances, inorganic salts and Cr that are not easy to biodegrade 3+ and S 2- It is a kind of industrial wastewater that is difficult to treat. In addition, the denitrification of leather wastewater is one of the keys to the treatment of leather wastewater. The traditional biological denitrification technology first needs to o...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F101/16C02F103/24
CPCC02F3/34C02F2101/16C02F2103/24
Inventor 邓敬轩曹振国邱勋向斯单晓红
Owner 恒臻无锡生物科技有限公司
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