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Treatment technology for high-concentration organic wastewater

A technology of organic wastewater and treatment process, applied in multi-stage water treatment, water/sewage treatment, biological water/sewage treatment, etc., can solve problems such as waste water accumulation, and achieve the effect of good purification and high removal rate

Active Publication Date: 2018-12-21
厦门福添环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in practical applications, there is a reduction in the amount of sludge at the bottom. Although this problem can be alleviated by reducing the wastewater treatment rate, the existing method will cause wastewater to accumulate. Therefore, a new type of sludge at the bottom of the UASB reactor has been developed. The method of reducing the amount of sludge, a technical problem, has certain production and application value

Method used

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  • Treatment technology for high-concentration organic wastewater
  • Treatment technology for high-concentration organic wastewater
  • Treatment technology for high-concentration organic wastewater

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Experimental program
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Effect test

Embodiment 1

[0035]Embodiment 1: A treatment process for high-concentration organic wastewater, including pretreatment, upflow anaerobic sludge bed treatment, activated sludge treatment and biological contact oxidation treatment;

[0036] (1) Pretreatment

[0037] Pretreatment includes grid filtration, sedimentation treatment, alkalization-sedimentation, acidification-sedimentation, buffer adjustment and heavy metal treatment in sequence.

[0038] Wherein, alkalization-sedimentation is carried out in the alkalization-sedimentation chamber. The alkalization-sedimentation includes the following steps: adjust the pH of the waste water to 8, 9, 10 and 11 in sequence with lye, and settling to remove solid impurities after each adjustment. 0.8wt% alkaline flocculant is added to the alkalization-sedimentation system. The basic flocculant includes 49wt% polyaluminum chloride, 23wt% aluminum hydroxide, 11wt% calcium hydroxide, 11wt% ferrous hydroxide, 4wt% sodium phosphate and 2wt% glucose.

[0...

Embodiment 2

[0051] Embodiment 2: a kind of processing technology of high-concentration organic waste water, the difference with embodiment 1 is,

[0052] In step (1) pretreatment, 0.5wt% alkaline flocculant is added to the alkalization-sedimentation system. The basic flocculant includes 48wt% polyaluminum chloride, 22wt% aluminum hydroxide, 10wt% calcium hydroxide, 12wt% ferrous hydroxide, 5wt% sodium phosphate and 3wt% glucose. The acidification-sedimentation system is added with 0.5wt% acid flocculant, which includes 30wt% polyaluminum chloride, 37wt% aluminum hydroxide, 13wt% chitosan and 20wt% polyacrylamide . The adjustment buffer treatment is carried out in the adjustment chamber, and the adjustment buffer treatment includes the following steps: adjusting the pH to 6.5, and introducing nitrogen gas to replace the air in the waste water. The formula of the heavy metal treatment film is: 35wt% polymethyl methacrylate, 27wt% metal organic framework compound HKUST-1, 12wt% activated c...

Embodiment 3

[0056] Embodiment 3: a kind of processing technology of high-concentration organic waste water, the difference with embodiment 1 is,

[0057] In step (1) pretreatment, 1.0wt% basic flocculant is added to the alkalization-sedimentation system, and the basic flocculant includes 50wt% polyaluminum chloride, 24wt% aluminum hydroxide, 12wt% hydrogen Calcium oxide, 10wt% ferrous hydroxide, 3wt% sodium phosphate and 1wt% glucose. The acidification-sedimentation system is added with 1.0wt% acid flocculant, which includes 37wt% polyaluminum chloride, 30wt% aluminum hydroxide, 15wt% chitosan and 18wt% polyacrylamide . The adjustment buffer treatment is carried out in the adjustment chamber, and the adjustment buffer treatment includes the following steps: adjusting the pH to 7.5, and introducing nitrogen to replace the air in the waste water. The formula of the heavy metal treatment film is: 32wt% polymethyl methacrylate, 25wt% metal organic framework compound HKUST-1, 15wt% activated...

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Abstract

The invention discloses a treatment technology for high-concentration organic wastewater. The treatment technology has innovation points as follows: UASB (upflow anaerobic sludge blanket) treatment isperformed in a UASB reactor, wastewater enters a sludge bed zone from the bottom of the UASB reactor and enters a settling zone by passing through a sludge blanket zone, a gas separation zone and a drainage channel in sequence, gas escapes from the wastewater in the gas separation zone, passes through a liquid isolating film and enters a gas collector through a chamber, and after the wastewater is subjected to solid-liquid separation in the settling zone, the treated water flows out from the upper part of the settling zone and enters the next process; during UASB treatment, temperature, pH, dissolved oxygen and MLVSS (mixed liquor volatile suspended solid) are controlled, and anaerobes, granule sludge, wood-plastic powder, polyether-ether-ketone and ferrous sulfate are added; anaerobic sludge can obtain and keep good sedimentation performance.

Description

technical field [0001] The invention relates to a treatment process for high-concentration organic wastewater. Background technique [0002] With the rapid development of the economy, the discharge of industrial wastewater in my country is increasing year by year. The discharge of untreated or substandard wastewater will inevitably cause pollution of the water body environment, and then lead to ecological imbalance. [0003] The Chinese patent with application publication number CN104829046A and application publication date of August 12, 2015 discloses a treatment method for high-concentration printing and dyeing desizing wastewater. The desizing wastewater is discharged from the UASB anaerobic tank and then enters the coagulation sedimentation tank in turn. , aerated activated sludge reaction tank and hydrolytic acidification tank, denitrification, sulfur oxidation, sludge adsorption and proliferation and sludge concentration occur simultaneously in the hydrolytic acidifica...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/20C02F101/30
CPCC02F9/00C02F3/2846C02F3/2866C02F3/12C02F2101/20C02F2101/30C02F2001/007C02F1/001C02F1/5236C02F1/54C02F1/66C02F1/44C02F1/48C02F2301/08
Inventor 赵刚伟柳育龙曾德城连梦群
Owner 厦门福添环保科技有限公司
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