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Method for deeply treating beryllium containing waste water with biological waste residue medium

A technology of advanced treatment and waste residue, applied in water/sewage treatment, chemical instruments and methods, adsorbed water/sewage treatment, etc. It can solve the problem of difficult to reach the standard discharge, and achieve the effect of huge specific surface area and abundant pores.

Inactive Publication Date: 2012-05-23
CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the solubility of beryllium hydroxide is 8×10 -6 mol / L, converted into beryllium is 72μg / L, which is 14.4 times the standard value of 5μg / L in the "National Comprehensive Wastewater Discharge". Therefore, it is difficult to meet the discharge standard by using conventional physical and chemical methods

Method used

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Examples

Experimental program
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Effect test

example 1

[0029] Take 400kg of waste residue produced in the brewing industry, add 950kg of crushed rice straw, and add 1.6kg of quicklime, 0.8kg of gypsum, 1.0kg of octanol, 0.3kg of salicylic acid; stir, mix well, control dissolved oxygen 0.6mg / L, pH= 8.5, the temperature is at 50°C, the potential is 7mV, fully fermented and matured for 20 days, preliminarily crushed, sterilized in a 100°C oven and dried for 10 hours, after being crushed by a plant pulverizer, passed through a 1mm sample sieve to obtain the biological waste residue of the present invention Based adsorbent, the biosorbent of this invention has a large number of dead microbial cells, has a huge specific surface area, rich pores, and contains a large number of active groups such as carboxyl, hydroxyl, amino, amide, and sulfide that can complex with metal ions group.

example 2

[0031] Add the biological waste slag-based adsorbent of Example 1 to the waste water with a beryllium content of 10 μg / L, pH=7.5, and a water temperature of 30° C. after pretreatment by traditional physical and chemical methods at a dosage of 0.5 g per liter of waste water, and stir for 8 Hours, the adsorbent was filtered off, the slag was separated from water, and beryllium was not detected in the effluent after treatment.

example 3

[0033] Add the biological waste slag-based adsorbent of Example 1 to the waste water with a beryllium content of 30 μg / L, pH=8.0, and water temperature of 20°C after pretreatment by traditional physical and chemical methods at a dosage of 0.6 g per liter of waste water, and stir for 8 Hours, the adsorbent was filtered off, the slag and water were separated, and the beryllium content in the wastewater dropped to 0.2 μg / L.

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PUM

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Abstract

The invention discloses a method for deeply treating beryllium containing waste water with a biological waste residue medium, belonging to the field of waste water treatment in environmental protection. The method comprises the following specific steps of: taking waste residues produced in the brewing industry, adding 2-3 times the mass of ground crop straws, adding quicklime in proportion of 4-5 g / kg, adding gypsum in proportion of 2-3 g / kg, adding organic alcohol in proportion of 2-3 g / kg and adding organic acid in proportion of 0.5-1 g / kg to obtain a solution; stirring and uniformly mixing the solution, controlling a content of dissolved oxygen to 0.6-1.0 mg / L, a pH value to 7.5-9.5, a temperature to 45-60 DEG C and an electric potential to 9 to -9 mV, fermenting and aging for 16-27 days, and sterilizing and grinding at a high temperature to prepare an adsorbent of the biological waste residue medium; and adding the biological adsorbent into the beryllium containing waste water pretreated with a traditional physical-chemical method according to a dosage of 0.5-1.5 g / L, stirring and reacting for 8-16 hours, filtering and removing the absorbent, separating residues from water and recycling beryllium from beryllium containing residues. The method for deeply treating beryllium containing waste water with the biological waste residue medium, disclosed by the invention, is characterized by high adsorption efficiency, simpleness and convenience for operation, low cost, stable water discharge quality reaching the national comprehensive sewage water discharge standard and the like; the range of choice of absorbents for a biological treatment process of the waste water can be widened; environment can be protected and wastes can be recycled; and the method for deeply treating beryllium containing waste water with the biological waste residue medium, disclosed by the invention, has good social benefit and economical benefit.

Description

technical field [0001] The invention relates to a method for advanced treatment of beryllium-containing wastewater by using biological waste residue, in particular to a method for treating beryllium-containing wastewater pretreated by traditional physical and chemical methods with a biological waste residue-based adsorbent prepared by fermentation of brewing waste residue and crop straw, etc. The utility model belongs to the field of waste water treatment in environmental protection. Background technique [0002] Beryllium-containing wastewater mainly comes from smelting, mining and production wastewater of special materials, radio equipment and instrument parts. Although the content of beryllium in wastewater is small, beryllium and its compounds are highly toxic substances. The toxicity of metal beryllium is relatively small. After beryllium enters the human body, insoluble beryllium oxide can cause pneumonia, and soluble beryllium compounds can cause organ or tissue infec...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/58
Inventor 雷春生雷思宇金利军
Owner CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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