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Biological powdered activated carbon purification method for water supply plant

A powder activated carbon, water supply plant technology, applied in chemical instruments and methods, water pollutants, sustainable biological treatment, etc., can solve the problems of difficult operation cost, limited adsorption capacity, high use cost, achieve high bearing capacity, improve treatment effect, sufficient aeration effect

Inactive Publication Date: 2016-12-21
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the current application of powdered activated carbon in water treatment mainly utilizes its adsorption performance, and its adsorption capacity is limited, so the cost of use is relatively high. Most water plants can consider it as an emergency treatment, but it is difficult to afford the operating cost for long-term operation.

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  • Biological powdered activated carbon purification method for water supply plant

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Effect test

Embodiment 1

[0041] In this example, biological powder carbon adsorption, separation tank and degradation tank purification process are used to treat the polluted water. The water to be purified is the water after precipitation in the water supply plant, the turbidity is 1.85NTU, and the TOC (Total Organic Carbon) is 4.5mg / L, UV 254 (UV 254 The value is the absorbance of some organic substances in water under ultraviolet light with a wavelength of 254nm, reflecting the amount of humic macromolecular organic substances and aromatic compounds containing C=C double bonds and C=O double bonds naturally present in water) is 0.07. The dosage of bio-powdered carbon in the bio-powdered carbon adsorption tank is 50mg / L, the concentration of bio-powdered carbon in the bio-powdered charcoal degradation tank is 20000mg / L, and the air-to-water ratio of blast aeration is 1:1. Continuous operation for 7 days, the growth of organisms on the powdered carbon is good, the turbidity of the effluent from the...

Embodiment 2

[0043] In this embodiment, the contaminated water is treated by biological powder carbon adsorption, separation tank and degradation tank purification process. The water to be purified is the water after precipitation in the water supply plant, the turbidity is 1.85NTU, the TOC is 4.5mg / L, and the UV 254is 0.07. The dosage of bio-powdered carbon in the bio-powdered carbon adsorption tank is 100mg / L, the concentration of bio-powdered carbon in the bio-powdered carbon degradation tank is 50000mg / L, and the air-water ratio of blast aeration is 2:1. Add 0.05 mg / L of nitrobenzene to the water to be purified to simulate sudden water pollution events, and 0.01 mg / L of effluent from the separation tank, with a removal rate of 80%.

[0044] The invention provides a circulation system suitable for emergency treatment, advanced treatment and special water treatment in a water supply plant. The system includes a biological powder carbon adsorption tank, a powder carbon separation tank and...

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Abstract

The invention discloses a biological powdered activated carbon purification method for a water supply plant. The method is carried by using a set of water treatment circulation system, wherein the circulation system is composed of a biological powdered carbon adsorption pool, a powdered carbon separation pool and a biological powdered carbon degradation pool; the purification method comprises the following steps: step 1, conveying water to be purified into the biological powdered carbon adsorption pool, and fully enabling the biological powdered carbon to be in complete contact with the water purification; step 2, separating the purified water from the biological powdered carbon by using the powdered carbon separation pool; step 3, discharging high-concentration powdered carbon mud discharged from the powdered carbon separation pool into the biological powdered carbon degradation pool for biodegradation of organic pollutants, blowing oxygen until a ratio of gas to water is (0.5-5): 1; and step 4, mixing the degraded biological powdered carbon with water to be purified, and then entering the biological powdered carbon adsorption pool for continuing the adsorption. The purification method provided by the invention is high in treatment efficiency, good in purification effect, reusable in biological powdered activated carbon, and low in energy consumption, and can be widely applied to the deep treatment of water after sedimentation of silts of the water supply plant.

Description

technical field [0001] The invention relates to the field of water supply treatment, in particular to a biological powder activated carbon purification method for emergency treatment, advanced treatment and special water treatment of water supply plants. Background technique [0002] At present, the quality of surface water continues to deteriorate, and the standard of drinking water quality continues to improve. Traditional water treatment processes cannot meet people's requirements for high-quality drinking water. Organic pollutants are one of the problems that must be faced in the drinking water treatment of most cities in my country. Organic pollutants, especially trace toxic and harmful pollutants, will seriously affect the health of residents. How to remove organic pollution in raw water economically, effectively and safely It is a hot spot in the field of drinking water treatment at present. At present, in the actual production of water plants, the removal effect of o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02C02F3/34C02F101/30
CPCC02F1/281C02F3/02C02F3/34C02F2101/30Y02W10/10
Inventor 芮旻徐俊段冬
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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