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An adsorption-membrane separation water treatment device and method enhanced by excess sludge

A technology for water treatment devices and excess sludge, applied in water/sludge/sewage treatment, water/sewage multi-stage treatment, chemical instruments and methods, etc., can solve the problem of difficult solid-liquid separation of adsorbents, high cost of adsorbent materials, Problems such as large footprint, to achieve the effect of improving application range and processing capacity, reducing secondary pollution, and saving floor space

Active Publication Date: 2019-03-12
BEIJING GUODIAN FUTONG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For this reason, the technical problem to be solved by the present invention is that existing water treatment devices have the problems of large footprint, expensive equipment, high cost of adsorbent materials, low utilization rate and difficulty in solid-liquid separation of adsorbent, thereby providing a small, flexible, Inexpensive, high-efficiency, stable and up-to-standard excess sludge adsorption-membrane separation water treatment device, and further discloses a water treatment method

Method used

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  • An adsorption-membrane separation water treatment device and method enhanced by excess sludge

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Embodiment 1

[0052] The various indicators of the biochemical tail water of a coal chemical industry wastewater are: chemical oxygen demand (COD Cr ) is 300mg / L-350mg / L, suspended solids (SS) is 100mg / L-120mg / L, turbidity is 45NTU-50NTU, the color is slightly yellow, and the water volume is 300m 3 / d.

[0053] Using the adsorption-membrane separation water treatment device and method for excess sludge enhancement of the present invention, the adsorbent used is activated coke (particle size 0.045mm-0.15mm), and the raw water is mixed with the raw water at a mass ratio of 500:1 and then passed from the bottom Upflow type adsorption tank, the effective water depth of the adsorption tank is 4m, the ascending flow rate is set to 2m / h, the air-water ratio is 15:1, and the coke is discharged through the discharge pipe to maintain the active coke concentration of 2g / L in the adsorption tank. After 2 hours of adsorption reaction, enter the top pre-sedimentation area for preliminary solid-liquid se...

Embodiment 2

[0056] The various indicators of wastewater from an enterprise in the printing and dyeing industrial park are: chemical oxygen demand (COD Cr ) is 1500mg / L-1750mg / L, suspended solids (SS) is 1800mg / L-2000mg / L, water volume is 1200m 3 / d, the effluent of the enterprise must meet the management standards of the park, and the location of the enterprise cannot build large-scale water treatment structures due to limited conditions.

[0057] Using the adsorption-membrane separation water treatment device and method strengthened by excess sludge of the present invention, the raw water and some activated carbon (particle size 0.075mm-0.15mm) are mixed at a mass ratio of 250:1 and then passed into the upflow adsorption tank from the lower part , the effective water depth of the adsorption tank is 6m, the aspect ratio is 6, the ascending flow rate is set to 3m / h, the air-water ratio is 30:1, and the activated carbon discharged through the discharge pipe keeps the concentration of activa...

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Abstract

The invention specifically relates to an excess sludge-reinforced adsorption-membrane separation water treatment facility and method, belonging to the field of sewage treatment. The excess sludge-reinforced adsorption-membrane separation water treatment facility comprises an adsorption zone, a pre-precipitation zone and a membrane separation zone. The facility uses an up-flow adsorption pool to improve adsorption efficiency and only needs configuration of a small amount of aeration devices to replace a stirring device, so energy is saved and cost is reduced. An active adsorbent is powdery active carbon or powdery active coke which is low in price and exerts better adsorption effect on organic pollutants difficult to degrade, so the application scope and treating capability of the water treatment facility are improved to a certain extent. Through introduction of a certain amount of excess activated sludge, the viscosity of water in a membrane separation pool is appropriately improved; the density degree of a filter cake layer on the surface of a membrane is reduced; the flux of the membrane is guaranteed; the backwashing frequency of a membrane module is reduced; and the service life of the membrane module is prolonged.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to an adsorption-membrane separation water treatment device and method enhanced by excess sludge. Background technique [0002] With the rapid development of economy and society, the pollution problems of industrial wastewater, domestic sewage and other water bodies are becoming more and more diverse and complex. At the same time, water quality standards are becoming increasingly strict. The traditional water treatment process occupies a large area, has high construction and operation costs, and stable water output. Disadvantages such as poor performance and secondary pollution are gradually exposed, and it has been unable to meet the needs of social production and environmental protection. [0003] Adsorption process is a common water treatment process at present. It uses the physical and chemical properties of certain active materials to reduce and separate pollutants i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04
Inventor 滕济林李若征杨万强靳昕李郑坤汪笑龙
Owner BEIJING GUODIAN FUTONG SCI & TECH DEV
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