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Processing plant for regenerating and using sewage

A treatment device and sewage technology, which is applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, sterilization/microdynamic water/sewage treatment, etc., can solve the problem of high investment, energy consumption and operation cost, difficult Promotion and application, high operating costs and other issues

Inactive Publication Date: 2006-07-05
CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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Problems solved by technology

[0002] On the one hand, the traditional biological aerated filter (BAF) requires deep pretreatment such as coagulation to remove suspended solids to ensure stable operation. At the same time, BAF is mainly based on single aerobic treatment, resulting in high investment, energy consumption and operating costs; On the one hand, traditional chlorine disinfection has some disadvantages in terms of safety, investment, and operating costs; while the advanced treatment technology for sewage resource utilization is mainly membrane filtration, which is difficult to be widely applied due to high operating costs

Method used

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  • Processing plant for regenerating and using sewage

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Effect test

Embodiment 1

[0017] Embodiment 1: adopt the sewage treatment device that compound biological filter combines with electrochemical disinfection, comprise filter (use the 50mm spherical compressible material that nylon fiber is made), anaerobic (use commercial bacterial agent SL-24, Taiwan Huanqi Industry Co., Ltd.), aerobic (commercial bacterial agent I-60), using porous carrier to immobilize microorganisms; titanium-based noble metal coated electrodes composed of electrolytic cell disinfection, in the case of no reflux, domestic sewage treatment operation data such as:

[0018] project

[0019] The load of the composite biological filtration system for sewage treatment is 2.22kgCOD / m 3 d, which is about 90% higher than the traditional activated sludge method; the operating cost is about 50% lower than the traditional activated sludge method, and the energy consumption is about 35% lower than that of traditional technical equipment; Environmental water standards for ornamental la...

Embodiment 2

[0020] Embodiment 2: adopt the sewage treatment device described in embodiment 1, aiming at domestic sewage in small and medium-sized cities and towns, the treatment considers the situation of denitrification and denitrification in reflux, and the operating data are as follows:

[0021]

[0022] The load of the composite biological filtration system for sewage treatment is 1.83kgCOD / m 3 d, increased by about 60% compared with the traditional activated sludge method; the operating cost is reduced by about 40% compared with the traditional activated sludge method (A / A / O) with denitrification function, and the energy consumption is about 30% lower than that of traditional technical equipment %; After the biological treatment, the electrochemically sterilized water reaches the environmental water standard for ornamental landscapes (waterscapes) in the water quality of reused water.

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Abstract

This invention belongs to the field of sewage disposal and resource utilization. Against the disadvantages such as high investment, maintenance and running cost existing in the traditional aeration biofilter sewage disposal; this invention describes a sewage recovery and recycles device and its operation method. The device is composed of a pretreatment zone, an anaerobic zone, an aerobic zone and a electrochemical sterilization device. After treatment, the sewage can satisfy the recycle standard. The device has such advantages as low investment, high adaptability and good treating effect.

Description

1. Technical field: [0001] The invention belongs to the field of sewage treatment and resource utilization, and relates to a sewage recycling treatment device, in particular to an integrated sewage treatment and recycling device which adopts multi-stage compound biological filtration and electrochemical disinfection integration and its operation mode. 2. Background technology: [0002] On the one hand, the traditional biological aerated filter (BAF) requires deep pretreatment such as coagulation to remove suspended solids to ensure stable operation. At the same time, BAF is mainly based on single aerobic treatment, resulting in high investment, energy consumption and operating costs; On the one hand, traditional chlorine disinfection has some shortcomings in terms of safety, investment, and operating costs; while the advanced treatment technology for sewage resource utilization is mainly membrane filtration, which is difficult to be widely applied due to h...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/28C02F3/02C02F1/467
CPCY02E50/30Y02W10/10
Inventor 李旭东
Owner CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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