Multi-chamber fixed-bed biomembrane reactor and method for treating perchlorate in sewage using same

A biofilm reactor and perchlorate technology, which is applied in biological treatment devices, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problems of large differences in the proportion of dominant bacteria, high sulfate and hydrogen sulfide yields, etc. , to achieve low one-time investment cost, reduce follow-up maintenance costs, and reduce side effects

Pending Publication Date: 2016-10-05
TIANJIN CHENGJIAN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Sahu (Environ.Sci.Technol.2009;43:4466-4471) et al. studied the degradation of perchlorate in sulfur packed bed reactors; due to the disproportionation reaction of sulfur, the problems of high yields of sulfate and hydrogen sulfide have not yet been solved , the literature also analyzed the bacterial community structure at different heights of the reactor, and found that the proportion of dominant bacteria in the upper part of the reactor was quite different from that in the lower part
Boles (Biotechnol.Bioeng.2012; 109: 637-646) et al. have studied the pilot-scale sulfur packed bed reactor, but have not yet solved the problems of high sulfate and hydrogen sulfide yields.

Method used

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  • Multi-chamber fixed-bed biomembrane reactor and method for treating perchlorate in sewage using same
  • Multi-chamber fixed-bed biomembrane reactor and method for treating perchlorate in sewage using same
  • Multi-chamber fixed-bed biomembrane reactor and method for treating perchlorate in sewage using same

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Experimental program
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Embodiment 1

[0036] ① First, mix the sulfur particles and quartz stone in a volume ratio of 1:1~3:1 to make filler, then inoculate the filler with settled thiosulfate-acclimated sludge, mix evenly, and then inoculate the sludge The filler of mud is respectively added to single-chamber, 2-chamber and 3-chamber reactors with a total volume of 3.6L, wherein the volume of each reaction chamber of the 3-chamber reactor is 1.2L, and the volume of each reaction chamber of the 2-chamber reactor is The volume is 1.8L, and the inoculum amount of sludge per liter of filler is 8g, calculated as SS.

[0037] The sludge was taken from the activated sludge of Shijiazhuang Qiaoxi Sewage Treatment Plant. The sludge was placed in a conical flask and cultivated with sodium thiosulfate. After seven days of anaerobic cultivation, the removal efficiency of perchlorate reached 100%. %.

[0038] The sulfur particles mainly provide electrons for the biofilm and are used for the attachment of the biofilm. The quar...

Embodiment 2~5

[0045] In embodiment 2, single-chamber reactor, 2-chamber reactor and 3-chamber reactor are on the basis of embodiment 1, adopt the parameter in table 1 to run respectively 5 days; Embodiment 3 is on the basis of embodiment 2 , adopting the parameters in Table 1 to run respectively for 5 days; Embodiment 4, on the basis of Example 3, adopting the parameters in Table 1 to run respectively for 5 days; Embodiment 5, on the basis of Example 4, using the parameters of Table 1 Run for 15 days respectively.

[0046] The degradation rate of perchlorate in each reactor, the utilization rate of sulfur particles, and the distribution of bacteria in the reactor were respectively analyzed through the water quality monitoring port and the sludge sampling port, and the production rate of hydrogen sulfide was detected through the gas outlet 6. For the above results, see Figure 3~7 .

[0047] from image 3 It can be seen that when ClO enters 4 - When the load is low, such as the 0.2~0.5g / ...

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Abstract

The invention discloses a multi-chamber fixed-bed biomembrane reactor and a method for treating perchlorate in sewage using the same. The multi-chamber fixed-bed biomembrane reactor comprises a filler column with a water inlet at the bottom and a water outlet at the upper part, wherein the inner space of the filler column is divided into more than or equal to two reaction chambers communicated up and down by a water distribution plate with a through hole; and a water-in pipe is arranged below each water distribution plate. Traditional one-chamber reactor is divided into more than two reaction chambers by the water distribution plate, and matching water inlets are formed in the two reaction chambers respectively; and moreover, the pollutants fully contact with sulfur particles, single dominant bacterial community is realized in the reactor, thus the utilization rate of sulfur is increased, and the generation of hydrogen sulfide gas and sulfate is reduced.

Description

technical field [0001] The invention belongs to the field of biological treatment of waste water or sewage, and in particular relates to a multi-chamber fixed-bed biofilm reactor and a method for treating perchlorate in sewage. Background technique [0002] With the development of industrial technology, water pollution is becoming more and more serious, especially perchlorate pollution, which mainly comes from the wastewater produced by dyes, rubber, and leather. After ingestion, perchlorate will competitively inhibit and hinder the thyroid gland from absorbing iodide ions, interfere with the normal function of the thyroid gland, reduce the secretion of thyroid hormones, and cause metabolic disorders in adults, especially hindering the normal growth and development of children. It is easy to cause symptoms such as low IQ, developmental delay, hyperactivity, distraction and even mental retardation in children. However, because perchlorate has the characteristics of non-volat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F101/12
CPCC02F3/28C02F3/2806C02F3/2853C02F3/2866C02F2101/12C02F2209/04C02F2203/004C02F2303/14C02F2305/06C02F2303/22C02F2209/265
Inventor 郭建博张超宋圆圆逯彩彩张新波吕建波温海涛
Owner TIANJIN CHENGJIAN UNIV
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