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Advanced treatment device and process for high-salt degradation-resistant sewage

It is an advanced treatment and refractory technology, which is applied in the direction of water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of high operating cost and poor treatment effect, and achieve operating cost Low, increased adsorption capacity, deep and efficient degradation treatment effect

Pending Publication Date: 2022-04-26
SHANGHAI LANKE PETROCHEM ENG & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the defects of poor treatment effect and high operating cost in the prior art, it is necessary for those skilled in the art to develop an advanced treatment device for high-salt refractory sewage with excellent treatment effect, low energy consumption and low operating cost and craft

Method used

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  • Advanced treatment device and process for high-salt degradation-resistant sewage

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Effect test

Embodiment 1-1

[0100] The treated sewage is: ultrafiltration reverse osmosis concentrated water of a refining and chemical enterprise, COD 150mg / L, TDS 30g / L;

[0101] The treatment process is: carry out according to the above-mentioned procedure of the present invention, wherein the specific surface area of ​​the block activated carbon is 950 m 2 / g, pore volume 1.3mL / g, bulk density 0.5g / cm 3 , inoculation of salt-tolerant high-efficiency biological flora (75% of bacillus, 25% of nitrifying bacteria), the gas-water ratio is 5:1, and the residence time of the biological activated carbon reactor is 12h;

[0102] The treatment result is: the concentration of COD in the effluent is 17mg / L, and the concentration of suspended solids in the effluent after sand filtration is 15mg / L.

Embodiment 1-2

[0104] The treated sewage is: ultrafiltration reverse osmosis concentrated water of a refining and chemical enterprise, COD 150mg / L, TDS 30g / L;

[0105] The treatment process is: carry out according to the above-mentioned procedure of the present invention, wherein the specific surface area of ​​the block activated carbon is 950 m 2 / g, pore volume 1.3mL / g, bulk density 0.5g / cm 3 , inoculation of salt-tolerant high-efficiency biological flora (50% of bacillus, 50% of nitrifying bacteria), the gas-water ratio is 5:1, and the residence time of the bioactivated carbon reactor is 8h;

[0106] The treatment result is: the concentration of COD in the effluent is 25mg / L, and the concentration of suspended solids in the effluent after sand filtration is 17mg / L.

Embodiment 1-3

[0108] Sewage treatment: ultrafiltration reverse osmosis concentrated water of a refining and chemical enterprise, COD 150mg / L, TDS 30g / L;

[0109] The treatment process is: carry out according to the above-mentioned procedure of the present invention, wherein the specific surface area of ​​the block activated carbon is 950 m 2 / g, pore volume 1.3mL / g, bulk density 0.5g / cm 3 , inoculation of salt-tolerant high-efficiency biological flora (65% of bacillus, 40% of nitrifying bacteria), the gas-water ratio is 3:1, and the residence time of the biological activated carbon reactor is 12h;

[0110] The treatment results are: the concentration of COD in the effluent is 21mg / L, and the concentration of suspended solids in the effluent after sand filtration is 17mg / L.

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Abstract

The invention discloses an advanced treatment device for high-salt degradation-resistant sewage, which comprises a biological activated carbon reactor, a filter plate, a supporting layer and a biological activated carbon layer are sequentially arranged in the biological activated carbon reactor from bottom to top, filter caps are distributed on the filter plate, an aeration unit is arranged in the supporting layer, activated carbon and biological flora are arranged in the biological activated carbon layer, and the biological flora is arranged in the biological activated carbon reactor. A water outlet unit is also arranged on the upper side of the biological activated carbon layer; a water inlet pipe for feeding sewage is also connected to a bottom accommodating cavity positioned on the lower side of the filter plate in the biological activated carbon reactor; an inlet of the sand filter reactor is communicated with the water outlet unit, and the sand filter reactor is further provided with a purified water outlet; the backwashing unit is communicated with the bottom accommodating cavity of the biological activated carbon reactor and is also communicated with the sand filter reactor. The invention also provides a corresponding deep treatment process. The advanced treatment device and process for the high-salt degradation-resistant sewage are excellent in sewage treatment effect, low in energy consumption and low in operation cost.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and relates to an advanced treatment device and process for high-salt refractory sewage. Background technique [0002] With the development trend of energy saving, emission reduction and zero discharge, advanced sewage treatment and reclaimed water reuse have become the norm in the petrochemical and coal chemical industries. However, as water quality discharge standards continue to become stricter, for example, before the end of 2023, the COD and ammonia nitrogen of Sinopec’s effluent wastewater will be lower than 30mg / L and 2mg / L respectively, and the refractory sewage is facing the challenge of further advanced treatment. The advanced treatment of salt refractory sewage is even more difficult, such as the deep degradation of COD in reverse osmosis concentrated water. [0003] Taking reverse osmosis concentrated water as an example, the characteristics of high-salt refractory sewage ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/10
CPCC02F3/10C02F3/106C02F1/001C02F2303/16Y02W10/10
Inventor 韩媛媛王日彩马洪玺杨秀梅池剑亭朱洪张文军
Owner SHANGHAI LANKE PETROCHEM ENG & TECH
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