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A method for powder enhanced biochemical water treatment

A technology of water treatment and powder, which is applied in the direction of biological water/sewage treatment, special compound water treatment, oxidation treatment of sludge, etc. It can solve the problems of unable to improve the quality of effluent water, unable to improve the sludge of sewage treatment equipment, and increasing the settling capacity. , to achieve the effect of increasing microbial concentration, fast sedimentation rate, and improving effluent water quality

Active Publication Date: 2021-08-06
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its small pore size and large specific surface area, it is very suitable for microorganisms to attach, increase the concentration of microorganisms, increase their sedimentation capacity, and improve the defects of sewage treatment equipment that the sludge cannot be improved and the quality of effluent water cannot be improved.

Method used

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  • A method for powder enhanced biochemical water treatment

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Embodiment 1

[0037] A method for powder enhanced biochemical water treatment, comprising the following steps:

[0038](1) Sewage water quality is pH: 6.83-7.12, COD mass concentration: 170-210mg / L, TN mass concentration: 24-35mg / L, diatomaceous earth is intended to be used as the powder carrier for microbial loading, and the device process is "secondary A / O+ powder enhanced biochemical water treatment + sedimentation tank". The total effective volume in the device is measured to be 14m 3 , the inflow flow rate is 1m 3 / h, dosing according to the powder carrier dosage concentration of 8g / L, the calculated diatomite required to be added is 120Kg, sieved with a 300-mesh sieve to obtain 120Kg of diatomite, soak the diatomite for more than 24 hours, and make the silicon The algae earth no longer agglomerates and floats up;

[0039] (2) Since the pH of the slurry will drop sharply after adding diatomite, other alkaline substances such as fly ash or sodium hydroxide can be added to restore the...

Embodiment 2

[0044] A method for powder enhanced biochemical water treatment, comprising the following steps:

[0045] (1) The sewage water quality is pH: 6.59-7.68, COD mass concentration: 150-290mg / L, TN mass concentration: 27-41mg / L, diatomaceous earth is intended to be used as the powder carrier for microbial loading, and the device process is "SBR process +Powder enhanced biochemical water treatment", the total effective volume in the device is measured to be 8m 3 , according to the powder carrier dosing concentration of 6g / L, the calculated diatomite required to be added is 48Kg, and 48Kg of diatomite is obtained by sieving with a 250-mesh sieve;

[0046] (2) Add diatomaceous earth directly to an effective volume of 8m 3 In the cylindrical equipment, turn on the mixer and aeration equipment to evenly distribute the diatomite into the cylindrical equipment, and at the same time make the diatomite completely absorb moisture, and there are no floating particles on the liquid surface; ...

Embodiment 3

[0051] A method for powder enhanced biochemical water treatment, comprising the following steps:

[0052] (1) The sewage water quality is pH: 6.51-7.52, COD mass concentration: 190-270mg / L, TN: 24-38mg / L, it is intended to use activated carbon as the powder carrier for microbial loading, and the device process is "A / O+powder strengthening Biochemical water treatment + sedimentation tank", the total effective volume of the structure is measured to be 500m 3 , dosing according to the concentration of powder carrier 2g / L, the calculated required dosage of activated carbon is 2000Kg, sieve 2000Kg of activated carbon with a 250-mesh sieve, soak the activated carbon for more than 24 hours until it completely absorbs moisture;

[0053] (2) Add activated carbon directly to an effective volume of 500m 3 In the structure, turn on the mixer and aeration equipment to distribute the activated carbon evenly into the cylindrical equipment. Due to the large dosage, it can be placed at multip...

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Abstract

The invention discloses a method for powder enhanced biochemical water treatment. The method of the present invention increases the volume load of biological treatment through the steps of screening and processing powder carriers, preparing powder slurry, hydraulic agitation, loading microorganisms on powder carriers, biological reaction treatment of sewage, precipitation, and recovery, and by adding powder carriers The microbial concentration of biological flocs in biochemical water treatment is significantly increased, the removal rate of refractory organic matter or TOC is increased, the removal rate of inorganic matter is increased, and the water quality of the effluent is improved; at the same time, the sedimentation rate of the biological flocs is fast, and the sedimentation The performance is good, and the sludge is relatively dense, which effectively reduces various problems caused by subsequent sludge treatment, making the process more green and environmentally friendly. The method of the invention can be applied to the treatment of low-concentration wastewater and high-concentration wastewater, and is suitable for developing small and high-efficiency equipment for treating various intercepted sewage.

Description

technical field [0001] The invention belongs to the technical field of microbial biochemical treatment, and relates to a method for powder enhanced biochemical water treatment, which is used for biochemical treatment of various sewage. Background technique [0002] At present, with the rapid development of industry and agriculture, the sewage generated in life has increased sharply, and the pollutants that need to be treated in water are increasing day by day, and there are various types. Due to the backwardness of my country's pipeline network construction, there is still a part of sewage that has not been intercepted and piped. If the sewage is received into the sewage plant in the later stage, it will inevitably increase the operating pressure of the sewage plant. With the deterioration of the environment and the increasing attention of human beings to the living environment, the discharge standards of sewage plants continue to increase. However, due to the limited desig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00
CPCC02F3/00C02F2001/007C02F2303/18C02F2305/12C02F3/1226C02F3/104C02F3/106C02F3/107C02F1/66C02F2203/004C02F1/385C02F11/06Y02W10/10C02F3/1284C02F2003/003C02F2303/22
Inventor 柴晓利戴晓虎陆斌武博然
Owner TONGJI UNIV
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