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Method for treating wastewater by technique of sludge decrement type biomembrane piled ball packing

A technology for sludge reduction and wastewater treatment, which can be used in aerobic process treatment, sustainable biological treatment, biological water/sewage treatment, etc. and other problems, to achieve the effects of film hanging and stable operation, sludge reduction, and reduction of construction and operation costs.

Inactive Publication Date: 2007-10-10
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sludge produced by biological treatment is generally composed of loose substances, and its characteristics are: 1. High water content; 2. Composed of bacterial micelles formed by various microorganisms and their adsorbed organic and inorganic substances; 3. Sludge Huge in size, unstable in nature, not conducive to transportation and disposal, and will cause direct or potential threats to the environment
At present, there are three problems in the treatment and disposal of excess sludge: first, there is no effective method that can be generalized and has no pollution to the environment; second, the amount of funds required for various sludge treatment and disposal methods Huge; Third, according to the construction plan of my country's urban sewage treatment plants, the annual sludge output will double
In view of the difficulty in handling the residual sludge of this kind of treatment method, as well as the high chroma, high COD content, large sludge output and secondary environmental pollution encountered in the treatment of high-concentration organic wastewater represented by soy sauce enterprise wastewater Considering economical efficiency, high efficiency and environmental friendliness, it is necessary to develop efficient biochemical treatment methods suitable for high-concentration organic wastewater sludge reduction, such as using new biofilm carrier fillers to create anaerobic biochemical treatment in biochemical reaction tanks. Under the condition of aerobic coexistence, research on the operation technology of sludge reduction treatment process for high-concentration organic wastewater

Method used

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  • Method for treating wastewater by technique of sludge decrement type biomembrane piled ball packing
  • Method for treating wastewater by technique of sludge decrement type biomembrane piled ball packing
  • Method for treating wastewater by technique of sludge decrement type biomembrane piled ball packing

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Effect test

Embodiment 1

[0068] Activated sludge from the biochemical pool of the wastewater treatment plant is used as the bacterial species to add film to the sludge reduction type biofilm stacking ball filler in the process. Process startup, biofilm formation, operation method and its effect on domestic sewage treatment are as follows:

[0069] 1. Take the activated sludge from the biochemical pool of the sewage treatment plant as the strain, and take the original domestic sewage treated by the biochemical pool for use;

[0070] 2. Adjust the BOD value of domestic sewage in the adjustment tank to about 300mg / L, add ammonium chloride and potassium dihydrogen phosphate, the concentrations of which are 12.7mg / L and 3.8mg / L respectively, and adjust the pH value to be neutral;

[0071] 3. Using the inoculation culture method, fill the biochemical tank with the domestic sewage regulated in step 2, and add activated sludge at a concentration of 10g / L;

[0072] 4. In the first two days of continuous expos...

Embodiment 2

[0079] In soy sauce production enterprises, the main source of wastewater is high-concentration and high-color organic wastewater from the oil-leaching workshop, and the oil-leaching wastewater, wastewater from other workshops and domestic sewage constitute wastewater from soy sauce enterprises. The waste water of soy sauce enterprises is treated by adopting the sludge reduction type biofilm stacking ball packing process of the present invention. The steps are to start the biofilm acclimation process after the completion of the biofilm formation in Example 1, gradually increase the proportion of wastewater in the oil-leaching workshop, and finally reach the level of leaching. Oily wastewater accounts for the proportion of the total wastewater generated by the enterprise, and finally enters the formal treatment process.

[0080] 1-5 steps are identical with example 1, need not stop adding ammonium chloride, potassium dihydrogen phosphate in wherein 5 steps;

[0081] 6. Graduall...

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Abstract

This invention relates to a method for treating wastewater with biomembrane filler with stacked ball structure for reducing sludge amount. The method comprises: hanging and culturing biomembrane filler with stacked ball structure, domesticating biomembrane, inoculating biomembrane, and treating wastewater. The method can realize the treatment on high-concentration organic wastewater, such as soybean sauce wastewater or domestic sewage. The stacked ball structure enriches the biological phase, and avoids the restriction of specific surfacearea to the biological amount in traditional biomembrane method. The biomembrane filler can largely reduce sludge amount by adjusting the running parameters. This invention can omit double precipitation pool and residual sludge treatment apparatus, thus can lower investment and running and management cost. The reduction of sludge can avoid secondary pollution caused by residual sludge treatment and sludge final treatment.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a method for treating waste water by using a sludge reduction type biofilm stacking ball packing process, which can be used for treating high-concentration organic waste water in a soy sauce production workshop, and can also be used for treating domestic sewage. Background technique [0002] While our country is facing a serious shortage of water resources, the discharge of wastewater has increased sharply. Among them, high-concentration organic wastewater is a type of wastewater that is difficult to treat. The present invention is illustrated by taking soy sauce production wastewater as an example. Every year, my country's soy sauce production enterprises produce 50 million cubic meters of wastewater 3 . Difficulties in the treatment of soy sauce wastewater include high chroma, high content of organic pollutants, large impact load changes, unstable pollutant components, high sl...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F3/10C02F3/02C02F103/32
CPCY02W10/10
Inventor 李凤祥华涛周启星
Owner NANKAI UNIV
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