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Application of a hydrogen matrix biofilm reactor in removing bromate in drinking water

A biofilm reactor and drinking water technology, applied in biological water/sewage treatment, water pollutants, chemical instruments and methods, etc., can solve the problems of lack of organic nutrients and obstacles to the application of biotechnology, and achieve high gas utilization rate, The effect of simple, convenient, safe and efficient removal of membrane components

Active Publication Date: 2020-05-15
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the lack of organic nutrients in drinking water and the limitation of electron donors in the bioreduction process also hinder the application of biotechnology in engineering

Method used

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  • Application of a hydrogen matrix biofilm reactor in removing bromate in drinking water
  • Application of a hydrogen matrix biofilm reactor in removing bromate in drinking water
  • Application of a hydrogen matrix biofilm reactor in removing bromate in drinking water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Prepare simulated water for acclimation:

[0073] NaHCO 3 as an inorganic carbon source; NaNO 3 It is an inorganic nitrogen source; prepare a phosphate buffer (Na 2 HPO 4 +KH 2 PO 4 ), and adjust the pH of the buffer to 7.0; the specific components and concentrations of the simulated water for acclimation are shown in Table 1.

[0074] Table 1 Simulated water composition table for domestication

[0075] Macronutrients Concentration / (mg / L) trace elements Concentration / (mg / L) NaNO 3

60 ZnSO 4 ·7H 2 o

0.013 K H 2 PO 4

128 h 3 BO 3

0.038 MgSO 4 ·7H 2 o

200 CuCl 2 2H 2 o

0.001 FeSO 4 ·7H 2 o

1 Na 2 MoO 4 2H 2 o

0.004 NaHCO 3

80 MnCl 2 4H 2 o

0.004 Na 2 HPO 4

434 CoCl 2 ·6H 2 o

0.025 CaCl 2 2H 2 o

1 NiCl 2 ·6H 2 o

0.001 Na 2 SeO 3

0.004

[0076] Domestication of Hydroautotrophs:

[0077] The...

Embodiment 2

[0087] Reactor for excess BrO in barreled water 3 - The removal of:

[0088] Adopt implementation step 4) described method to exceed standard BrO in bottled drinking water 3 - to process. Collect commercially available partial BrO 3 - The bottled water exceeding the standard is used as the raw water of the reactor. Collecting BrO in Water Samples 3 - The concentration exceeds 0.2 to 1 times the limit value (10 μg / L) of the "Drinking Water Sanitation Standard" (GB5749-2006), that is, BrO in the influent 3 - The concentration is 12~20 μg / L. Adjust the influent flow rate of the reactor to 2.5 mL / min, and dynamically monitor the BrO in the effluent 3 - and Br - concentration. The effluent BrO 3 - and Br - The concentration ranges are listed in Table 3.

[0089] Table 3 Reactor effluent water quality

[0090] BrO 3 - Concentration / (μg / L)

Embodiment 3

[0092] Reactor to BrO in tap water 3 - The removal of:

[0093] In order to better examine the reaction of the reactor to different concentrations of BrO 3 - The removal performance to dosing BrO 3 - Tap water was used as the feed water for the reactor. Reactor feed water BrO 3 - The settings are 0.1, 0.5 and 1.0 mg / L. At the same time, tap water also contains NO 3 - -N and SO 4 2- , by adding nitrate and sulfate to make the influent NO 3 - -N concentration is 10 mg / L, SO 4 2- The concentration is 50 mg / L.

[0094] Use the method described in step 4) to investigate the treatment performance of the reactor. Reactor effluent water quality as Figure 4 shown. In the first stage, adding BrO 3 - Concentration is 0.1 mg / L, influent NO 3 - -N and SO 4 2- The concentrations are 10 mg / L and 50 mg / L respectively, and the hydrogen partial pressure is 0.04 MPa. Due to water ingress NO 3 - -N concentration is low, so denitrification effect is very good, effluent...

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Abstract

The invention relates to a hydrogen matrix biofilm reactor for removing bromate (BrO 3 ‑ ), belongs to the field of water purification technology. In the application of the hydrogen matrix biofilm reactor provided by the present invention in the removal of bromate in drinking water, the hydrogen matrix biofilm reactor includes a cylinder body, a return system, an inlet and outlet water piping system and a hydrogen supply system; the cylinder The center of the body is equipped with a hollow fiber membrane as the attachment carrier of the biofilm, and the two ends of the hollow fiber membrane are fixed at both ends of the cylinder; the hollow fiber membrane is connected to the hydrogen supply system, and hydrogen enters the hollow fiber membrane from the top of the reactor. , diffuse from the inner layer of the hollow fiber membrane of the membrane to the outer layer in a bubble-free manner, discharge into the cylinder, and then discharge from the water outlet. The application provided by the invention is simple and safe to operate, and can realize the treatment of BrO in drinking water 3 ‑ Efficient and fast removal.

Description

technical field [0001] The invention relates to the technical field of water purification, in particular to the application of a hydrogen matrix biofilm reactor in removing bromate in drinking water. Background technique [0002] Bromate (BrO 3 - ) is a type of by-product produced by ozone disinfection of drinking water, which has been classified as a 2B potential carcinogen by the International Agency for Research on Cancer, and has certain DNA and chromosome level genotoxicity at high doses. BrO 3 - It has become a major hidden danger affecting people's drinking water safety. my country's newly revised Hygienic Standards for Drinking Water (GB 5749-2006) and Packaged Drinking Water (GB 19298-2014) have stipulated that BrO 3 - The limit is 10 μg / L. The US EPA and the EU on BrO 3 - The regulation of MCL (Maximum Contamination Level) shall not be higher than 10 μg / L. BrO 3 - It has the characteristics of strong stability, high solubility, non-volatility and fast m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F101/12
CPCC02F3/34C02F2101/12
Inventor 韩亚梅李海翔蒋敏敏张欢林华张学洪曾鸿鹄莫凌云
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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