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Preparation method of modified volcanic filling material for sewage purification

A technology for sewage purification and volcanic rock, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of low total nitrogen removal rate and low TP removal rate, and achieve good Processing effect, rich source, low cost effect

Active Publication Date: 2013-05-08
JIANGSU WISE SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Previous experiments on the general performance of biological aerated filters with ceramsite as fillers for sewage treatment showed that the biological filter technology has a significant impact on the COD, NH 4 + , turbidity, SS, etc. have good treatment effects, and the removal rates can reach 88.4%, 93.7%, 91.6% and 94.2% respectively, but the removal rate of total nitrogen (TN) is not high (only 54.5% on average)
The crushed natural volcanic rock was further selected as the filler. The test showed that although the crushed volcanic rock is a relatively good filler for the biological aerated filter, there is not much difference in the improvement of COD, SS and turbidity compared with ceramsite, and The removal rate of TP is quite low

Method used

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  • Preparation method of modified volcanic filling material for sewage purification
  • Preparation method of modified volcanic filling material for sewage purification
  • Preparation method of modified volcanic filling material for sewage purification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Select and mine volcanic rocks, crush, sieve, and grind to obtain irregular particles (Φ=5-50 mm); then use imidazole-type ionic liquid-1-butyl-3-methylimidazole Chlorinated salt ([Bmin]Cl) soaking modification treatment at room temperature (final concentration of lanthanide rare earth elements is 0.05 mol / L, final concentration of ionic liquid is 0.01 mol / L, soaking time is 6 h.), drained to obtain the finished product .

Embodiment 2

[0015] Select volcanic rocks, crush, sieve, and grind to obtain irregular particles (Φ=10-100 mm); then use pyridine-type ionic liquid-N-ethylpyridine bromide (N - ethylpyridinium bromide) soaked at room temperature for modification (the final concentration of lanthanide rare earth elements is 0.1 mol / L, the final concentration of ionic liquid is 0.005 mol / L, and the soaking time is 12 h.), drained to obtain the finished product.

Embodiment 3

[0017] Select volcanic rocks, crush, sieve, and grind to obtain irregular particles (Φ=5-100 mm); N-ethyl-methyl pipe was soaked and modified at room temperature (the final concentration of lanthanide rare earth elements was 0.001 mol / L, the final concentration of ionic liquid was 0.001 mol / L, and the soaking time was 24 h.), drained, Get the finished product.

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Abstract

The invention discloses a preparation method of modified volcanic rock filler used for sewage purification, and belongs to the preparation method of sewage treatment filler in the field of environmental protection. Follow the steps below: take volcanic rock as raw material, process it into irregular granular shape by crushing, sieving, and grinding, process it into the particle shape of required size, and then modify it with ionic liquid containing low-concentration lanthanide rare earth elements, The specific conditions are soaking at normal temperature for 4-24 hours, draining to obtain the finished product. The raw material cost of the filler is low, the processing technology is simple, and the use effect is good. It can be widely used in trickling filter bed, anaerobic biological filter, filter, biological fluidized bed, biological aerated filter, high-load biological filter, tower biological filter, active biological filter, wetland, etc.

Description

technical field [0001] The invention relates to a filler related to sewage treatment in the field of environmental protection and a preparation method thereof, in particular to a modified volcanic rock filler used for sewage purification and a preparation method thereof. Background technique [0002] my country is a country that is relatively short of water resources. With the development of economy and the acceleration of urbanization, the problem of urban water shortage is becoming more and more serious, and the massive discharge of urban sewage has aggravated this trend. Sewage treatment is one of the important technical measures to prevent and control water environment pollution. The level of sewage treatment technology will directly affect the quality of water environment in a region. Biofilter and fluidized bed technology are new biological treatment technologies suitable for small and medium-sized point source sewage treatment and reuse; they use granular packing as t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 杜道林张祯
Owner JIANGSU WISE SCI & TECH DEV