Method for treating organic wastewater utilizing aged refuse

A technology for mineralizing garbage and organic wastewater, applied in the field of environmental pollution control, can solve the problems affecting the application of mineralized garbage, high condition requirements, and waste water generation, etc., and achieves the effects of easy popularization, lower investment, and lower cost.

Active Publication Date: 2012-11-07
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is complicated in process, high in requirements, time-consuming and energy-consuming, and produces waste water, which seriously affects the application of mineralized waste in actual waste water treatment projects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The 8-year-old mineralized waste is first air-dried, then crushed to remove impurities, and then passed through a 40-mesh sieve; the treated mineralized waste is added to the phenol-containing wastewater, and the amount of mineralized waste added per liter of phenol wastewater is 1.2g, add octaalkyltrimethylammonium bromide cationic surfactant at the same time, the amount of octaalkyltrimethylammonium bromide is 0.8 mmol / g mineralized waste, keep stirring for 2 h after adding, let stand for 3 h , Precipitation and separation, the concentration of the supernatant was measured with a UV-Vis spectrophotometer, and the removal rate was 80.1%. Its saturated adsorption capacity for phenol was measured to be 1.5mg / g.

Embodiment 2

[0015] The 15-year-old mineralized waste is air-dried first, then crushed to remove impurities, and then passed through a 100-mesh sieve; the treated mineralized waste is added to nitrobenzene-containing wastewater, and mineral The amount of mineralized garbage is 0.6 g, and dodecyltrimethylammonium bromide cationic surfactant is added at the same time. The amount of dodecyltrimethylammonium bromide is 0.5 mmol / g mineralized garbage, and continuous stirring after adding After 1 h, let it stand for 5 h, precipitate and separate, and measure the supernatant concentration with a UV-Vis spectrophotometer, and the removal rate is 91.3%. The saturated adsorption capacity of p-nitrobenzene was measured to be 24.4 mg / g.

Embodiment 3

[0017] The 10-year-old mineralized waste is first air-dried, then crushed to remove impurities, and then passed through a 100-mesh sieve; the treated mineralized waste is added to the phenanthrene-containing wastewater, and the amount of mineralized waste added to each liter of phenanthrene-containing wastewater Add cetyltrimethylammonium bromide cationic surfactant at the same time, the amount of cetyltrimethylammonium bromide is 0.6 mmol / g mineralized waste, keep stirring for 0.5 h after adding, static Set aside for 4 h, the precipitate was separated, and the concentration of the supernatant was measured by a UV-visible spectrophotometer, and the removal rate was 99.1%.

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Abstract

The invention discloses a method for treating organic wastewater utilizing aged refuse. The method comprises: air-drying the aged refuse with a landfill age of 8-15 years, crushing and removing impurities, and screening by a 40-100 meshed sieve; adding the treated aged refuse to the organic wastewater, wherein the addition amount of the aged refuse is 0.6-1.2 g in per liter of organic wastewater; and simultaneously adding a cationic surfactant the amount of which is 0.5-0.8 mmol / g aged refuse, after adding, continuously stirring for 0.5-2 hours, standing, separating a precipitate and discharging supernatant, wherein the cationic surfactant is medium-chain and long-chain alkyl ammonium salts with the carbon number of alkyl being 8 or more. The method disclosed by the invention has the advantages of reducing aged refuse modification process, reducing investment, saving energy and water resources and significantly reducing wastewater treatment cost, has a simple process and a large treatment load, is easy to popularize and use and can be used for pretreatment processes of various high-concentration organic wastewater and industrial wastewater, and water treatment cost is greatly reduced.

Description

technical field [0001] The invention relates to an environmental pollution control method, in particular to a method for treating organic waste water with mineralized garbage. Background technique [0002] Mineralized waste refers to waste that has been buried in landfills for many years, basically stabilized, and can be mined and utilized. Compared with ordinary soil, mineralized waste has the characteristics of small bulk density, high porosity, high organic matter content, large cation exchange capacity, strong adsorption and exchange capacity, and is an ideal adsorbent. [0003] "Journal of Environmental Science" (2007, 27 (2): 247-251) recorded that mineralized garbage has a certain adsorption effect on phenolic substances, which is the result of the combined effect of distribution and chemical reactions. However, the adsorption capacity of phenol is small. When the phenol concentration is 45 mg / L, its optimal adsorption capacity is 0.46 mg / g, which is only 1 / 3 of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28
Inventor 马建锋崔冰莹李定龙
Owner 溧阳常大技术转移中心有限公司
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