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Sludge decrement type biomembrane piled ball packing, preparation method and application

A technology of sludge reduction and ball packing, applied in the direction of sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of increased annual sludge production, large sludge volume, and no environmental pollution , to achieve the effects of film formation, stable operation, flexible construction scale, and avoiding secondary pollution

Inactive Publication Date: 2009-09-02
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 in the existing technology: first, there is no effective method that can be generalized and has no pollution to the environment; secondly, various sludge treatment and disposal methods need The amount of funds is huge; third, according to the construction plan of my country's urban sewage treatment plants, the annual output of sludge will increase exponentially
[0008] In view of the problems encountered in the above organic wastewater treatment: high COD load, high sludge yield and secondary environmental pollution problems of subsequent treatment, considering economy, efficiency and environmental friendliness, it is necessary to develop an efficient and applicable The biochemical treatment method for high-concentration organic wastewater sludge reduction type, the core problem is the development of new biofilm fillers with sludge reduction characteristics

Method used

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  • Sludge decrement type biomembrane piled ball packing, preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Select the natural stone material commonly used in the market for ordinary building paving—limestone for bonding, and use a crusher to crush the selected natural stone material into particles with a diameter of about 0.7cm;

[0037] 2) Generally, after crushing, there is no oil stain or other pollutants on the surface of this kind of stone, and only the mud dust and debris generated by the crushing operation accumulate. Soak it in 1% dilute hydrochloric acid solution for about 5 hours, then wash it with tap water and dry it for later use;

[0038] 3) Use the adhesive epoxy resin 6101 and the epoxy resin curing agent polyamide T31, mix them at a ratio of 6:1, stir them thoroughly until the adhesive is opaque and milky white, and set aside;

[0039] 4) Sub-spheres with a diameter of 4 cm are bonded. Fill the spherical mold with an inner diameter of 4cm with the stone particles treated in step 1), and then immerse it in the adhesive prepared in step 3), take it out afte...

Embodiment 2

[0042] The difference from Example 1 is that the natural stone selected for bonding is conglomerate, and the adhesive epoxy resin 828 and the epoxy resin curing agent polyamide 650 are mixed in a ratio of 8:1, and the remaining production methods and steps Same as Example 1.

Embodiment 3

[0044] The difference from Example 1 is that the natural stone selected for bonding is breccia, the adhesive epoxy resin 618 and the epoxy resin curing agent polyamide 300 are mixed in a ratio of 8:1, and the rest of the production methods are the same as Step is identical with embodiment 1.

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Abstract

This invention discloses a method for preparing biomembrane filler with stacked ball structure for reducing sludge amount, and its application. The biomembrane filler is composed of natural stone material, thermosetting resin binder, curing agent, and biomembrane carrier with certain particle diameters. The biomembrane filler can reduce the amount of sludge in high-concentration organic wastewater. The biomembrane filler has such advantages as stable biomembrane hanging and running. The stacked ball structure optimizes sludge retention time and hydraulic retention time, enriches the biological phase, and avoids the restriction of specific surfacearea to the biological amount in traditional biomembrane method. The biomembrane filler also optimizes the separation conditions of wastewater and suspended solids. The method has such advantages as simple process, easy maintenance, low construction and running cost of wastewater treatment plant, no secondary pollution, high efficiency, and high profit, and is environmentally friendly.

Description

technical field [0001] The invention relates to a sludge reduction type biofilm stacked ball filler and a preparation method thereof, which can be used for effective treatment of high-concentration organic wastewater and simultaneous realization of sludge reduction. Background technique [0002] Among various wastewater treatment technologies and methods, wastewater biological treatment technology has gradually become the development direction of wastewater treatment. Wastewater biological treatment technology is to use the physiological function of microorganisms' own metabolism to oxidize and decompose organic matter in wastewater and convert them into stable inorganic substances, and take certain artificial technical measures to create a favorable environment for the growth and reproduction of microorganisms, and accelerate The proliferation of microorganisms and their metabolic functions, so that the organic pollutants in the sewage can be degraded and removed. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12C02F3/10C02F3/02
CPCY02W10/10
Inventor 李凤祥周启星华涛
Owner NANKAI UNIV
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