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Micro-polluted surface water treatment method based on bio-membrane reactor

The technology of a biofilm reactor and a treatment method is applied in the field of micro-polluted surface water treatment based on the biofilm reactor, which can solve the problems of increasing the difficulty of physical and chemical restoration of micro-polluted surface water, and achieves a simple structure, The effect of increasing the contact time and strong load impact resistance

Active Publication Date: 2015-12-09
TIANJIN PURUITE PURIFICATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The special nature of micro-polluted surface water increases the difficulty of physical and chemical remediation

Method used

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  • Micro-polluted surface water treatment method based on bio-membrane reactor
  • Micro-polluted surface water treatment method based on bio-membrane reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A ceramic carrier water pump drives a baffled internal circulation biofilm reactor, such as figure 1 As shown, it includes a reactor shell 1, one end of the reactor shell 1 is provided with a water inlet 11 and a water outlet 12, and the inside of the reactor shell 1 is provided with an isolation plate 2, and the isolation plate 2 divides the interior of the reactor into an upper dissolved oxygen zone 4 and the biodegradation zone 5 below, and one end of the dissolved oxygen zone 4 is directly connected with the biodegradation zone 5, and the other end is connected with the circulation pipe 7 through the circulation pump 6, so that the waste water to be treated continuously flows through the dissolved oxygen zone 4 and the biodegradation zone 5, 9 deflectors 3 are arranged vertically at intervals in the biodegradation zone 5, and the deflectors 3 are arranged alternately in order to form a channel that can make the solution deflect up and down in the reactor, and the def...

Embodiment 2

[0055] Use the biofilm reactor of this embodiment 1 to carry out denitrification treatment to slightly polluted surface water:

[0056] When the reactor operates as a continuous flow, the water source of the Guilin Park section of the Caohejing River, a branch of the Huangpu River, Longhua Port, Shanghai, is taken as the raw water.

[0057] When the reactor operates in batch mode, refer to Example 1 for water source preparation.

[0058] The batch reactor dephosphorization test was carried out from July to August 2010. When the reactor was operated intermittently, the water inlet pump was turned off, the reactor was filled with water to be treated, the circulation pump was turned on at a speed of 50.0rmp, and the raw water was Laboratory water distribution (C:N:P=100:5:1), in which the nitrogen source is prepared with ammonium chloride, which is ammonia nitrogen, and the experiments without aeration and aeration were used to study the effect of dissolved oxygen on the concentr...

Embodiment 3

[0061] Use the biofilm reactor of this embodiment 1 to carry out denitrification treatment to slightly polluted surface water:

[0062] When the reactor operates as a continuous flow, the water source of the Guilin Park section of the Caohejing River Road, a branch of the Huangpu River, Longhua Port, Shanghai, is taken as the raw water.

[0063] When the reactor operates in batch mode, refer to Example 1 for water source preparation.

[0064] Treat natural river water by continuous flow operation. When the hydraulic retention time (HRT) is greater than 6.0 hours, the reactor has a significant degradation effect on organic matter, and the reactor effluent COD Cr The concentration is significantly lower than the reactor influent COD Cr Concentration, effluent COD Cr The concentration reaches the Ⅱ~Ⅲ waters stipulated in the "Surface Water Environmental Quality Standard"; this experiment uses a biofilm reactor to treat COD Cr The removal effect of COD has a very obvious correl...

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Abstract

The invention relates to a micro-polluted surface water treatment method based on a bio-membrane reactor. A ceramic carrier water pump is employed for driving a baffle-plate internal-circulating bio-membrane reactor to performing denitrification, dephosphorization and / or organic substance removal to micro-polluted surface water. A separation plate is arranged in the bio-membrane reactor to separate the interior of the reactor into an oxygen dissolving zone at the upper part and a bio-degradation zone at the lower part, wherein the oxygen dissolving zone is communicated with one end of the bio-degradation zone while the other end of the bio-degradation zone is communicated with a circulation pipe through a circulation pump, so that waste water to be treated flows through the oxygen dissolving zone and the bio-degradation zone continuously. A plurality of flow guide boards are vertically arranged in the bio-degradation zone at interval and are arranged in a high-low interlaced manner, thereby forming a channel in which solution can flow in a vertical baffled manner in the reactor. The flow guide boards are used as a carrier of a bio-membrane. Compared with a reactor in the prior art, by means of the reactor, ammonia nitrogen and total nitrogen in polluted river water are removed well and a certain removal effect on total phosphorus and organic substances in water is achieved too.

Description

technical field [0001] The invention relates to a water treatment method, in particular to a micro-polluted surface water treatment method based on a biofilm reactor. Background technique [0002] Slightly polluted surface water generally refers to water bodies that contain many types of pollutants and complex properties, but relatively low concentrations. Its micro-pollutants mainly include petroleum hydrocarbons, volatile phenols, ammonia nitrogen, phosphorus, pesticides, COD, heavy metals, arsenic, cyanide, iron, manganese, etc. These pollutants will cause great harm to human health, especially those that are difficult to degrade , easy bioaccumulation and toxic organic pollutants with three (carcinogenic, teratogenic, mutagenic) effects. In recent years, my country's seven major water systems and three major lakes have been polluted to varying degrees. According to the detection of the environmental protection department, more than 90% of the urban waters in my country...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/34C02F101/30C02F103/06
Inventor 张红专张永明徐华汤楹霞孙伟华
Owner TIANJIN PURUITE PURIFICATION TECH
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