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Activated oyster shell biofilm carrier prepared from oyster shells serving as raw material

A technology of biological filler and oyster shell, applied in the direction of sustainable biological treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problems of changing mold hanging effect, complicated debugging process, high cost of raw materials, etc., and achieve saving chemical raw materials , improve the chance of survival, good effect

Inactive Publication Date: 2012-06-20
青岛海安生物环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of these fillers are made of chemical raw materials. The cost of raw materials is high, the cost is high, and the specific surface area is small. The mold hanging effect is easily affected by various external environments. The installation is cumbersome and the debugging process is complicated. In addition, these fillers are in use. In the process, there are problems of serious fouling and poor recoil, which often require a lot of manpower and material resources to deal with

Method used

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  • Activated oyster shell biofilm carrier prepared from oyster shells serving as raw material
  • Activated oyster shell biofilm carrier prepared from oyster shells serving as raw material

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specific Embodiment approach 1

[0020] Specific implementation mode one: as figure 1 Shown, a kind of activated oyster shell biological filler with oyster shell as raw material, this biological filler is with oyster shell as raw material, and its preparation steps are:

[0021] (1) Cleaning: put the oyster shell raw material in a container, add water to the container, and carry out aeration and scouring for 30 minutes by a blower to remove the attachments on the surface of the oyster shell;

[0022] (2) Sorting: Sorting the oyster shells after aeration and scouring, removing broken oyster shells and oyster shells with a size less than 5cm;

[0023] (3) Heating: Put the sorted oyster shells into a closed container, and use the heat source generated by the steam boiler to heat treatment. The heating temperature is 50°C, and the heating time is 30 minutes;

[0024] (4) Acidification: the oyster shell after heat treatment is put into the container that is filled with sulfuric acid to carry out acidification, an...

specific Embodiment approach 2

[0028] Embodiment 2: Different from Embodiment 1, in Embodiment 2, the heating temperature of step (3) heat treatment is 60° C., and the pH value is adjusted to 7 during step (5) alkaline washing.

specific Embodiment approach 3

[0029] Embodiment 3: Different from Embodiment 1, in Embodiment 3, the heating temperature of step (3) heat treatment is 70° C., and the pH value is adjusted to 7.5 during step (5) alkaline washing.

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Abstract

The invention relates to an activated oyster shell biofilm carrier prepared from oyster shells serving as raw materials. The biofilm carrier is prepared from oyster shells serving as raw materials. The activated oyster shell biofilm carrier is obtained by performing cleaning, sorting, heating, acidifying, alkali washing, water washing and air drying on oyster shells left after food processing. Oyster shells discarded after food processing are taken as raw materials, and are subjected to advanced treatment and processing to obtain the activated oyster shell biofilm carrier, processing is simple and convenient, a structure is compact, dispersed treatment can be performed, the production cost of the biofilm carrier is low, the emission of solid wastes is reduced, and a large quantity of chemical raw materials are saved; the bulk density of activated oyster shells is 0.4 t / m<3>, the specific surface area is 720 m<2> / m<3>, the service life is long, and a good effect is achieved; a process index MLSS (Mixed Liquor Suspended Solids) is equal to 10 kg / m<3>, a process index NV (Number Of Variables) is 3-4 kg COD (Chemical Oxygen Demand), oxygen utilization ratio is 30 percent, the floor area is small, and energy consumption is low.

Description

technical field [0001] The invention relates to a biological filler, in particular to a biological filler for sewage treatment. Background technique [0002] Fillers are often used in sewage treatment technology-biological contact oxidation to improve the degradation rate of organic matter in sewage. There are many types of packing, which can be divided into bulk packing and structured packing according to different packing methods. Among them, bulk packing is a granular body with a certain geometric shape and size, generally stacked in a random manner, also known as random packing or granular packing. According to different structural characteristics, bulk packing can be divided into ring packing, saddle packing, ring saddle packing and spherical packing. Structured packing is arranged in a certain geometric configuration and neatly stacked. According to its structural characteristics, structured packing can be divided into two categories: corrugated packing and non-corru...

Claims

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Application Information

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IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 孔凡国徐云龙江安
Owner 青岛海安生物环保有限公司
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