Structural-filler-reinforced rural domestic and catering wastewater treatment plant and method

A technology for catering wastewater and structural fillers, which is applied in biological treatment devices, biological water/sewage treatment, return water treatment, etc., can solve problems such as unsatisfactory COD removal effect, low biological treatment efficiency, and impact on removal effect, etc. Low operating cost, high processing capacity, simple and convenient operation

Active Publication Date: 2016-06-08
ZHEJIANG UNIV
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Problems solved by technology

The main problem is that the installation of the degreasing tank will affect the subsequent carbon-nitrogen ratio and thus affect the removal effect, so that the integrated device does not have a special degreasing tank for the characteristics of more oil in rural

Method used

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  • Structural-filler-reinforced rural domestic and catering wastewater treatment plant and method
  • Structural-filler-reinforced rural domestic and catering wastewater treatment plant and method

Examples

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Embodiment

[0037] In this example, the rural living and catering wastewater treatment device strengthened by structural packing adopts such as Figure 1~2 The shown device includes degreasing pond 3, anaerobic pond 4, anoxic pond 6, aerobic pond 7, aerobic reflux pond 8, and sedimentation pond 9, which are connected in sequence, and the designed daily wastewater treatment is 4t, satisfying 12-15 The domestic sewage treatment of households in rural areas, the total hydraulic retention time HRT is 14 ~ 28h. Among them, the total device is 2m long, 1m wide, and 1.05m high. The hydraulic retention time HRT of oil removal pool 3, anaerobic pool 4, anoxic pool 6, aerobic pool 7, and sedimentation pool 9 are 3~5h, 1~3h, respectively. 2~5h, 6~10h, 2~5h; the degreasing tank 3 is provided with a water inlet 1 connected to the sewage source, and the water inlet 1 is a circular pipe with a diameter of 5cm; the degreasing tank 3 is provided with a suspended oil-absorbing filler 2. The filler is a co...

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Abstract

The invention discloses a structural-filler-reinforced rural domestic and catering wastewater treatment plant and method. The wastewater treatment plant comprises an oil removal tank, an anaerobic tank, an anoxic tank, an aerobic tank, an aerobic reflux tank and a precipitation tank which are sequentially connected, wherein the oil removal tank is provided with a water inlet; a suspended oil absorption filler is arranged in the oil removal tank; a biological filler is respectively arranged in the anaerobic tank, anoxic tank and aerobic tank; a guide pipe is respectively arranged between the oil removal tank and anaerobic tank, and between the anoxic tank and aerobic tank; an aeration branch pipe in the aerobic reflux tank is provided with an aeration head; an ascending pipe is arranged above the aeration head; the side wall of the ascending pipe body is connected with the anoxic tank through a return pipe; and a gas stripping reflux mode is adopted to implement wastewater reflux. An integrated treatment technique is adopted in the entire allocation, has the advantages of simple construction and investment saving, has higher treatment capacity, can remove more than 75% of total nitrogen and more than 65% of total phosphorus and degrade more than 90% of COD (chemical oxygen demand), and is very suitable for distributed treatment of rural domestic wastewater.

Description

technical field [0001] The invention relates to sewage treatment equipment, in particular to a rural life and catering wastewater treatment device and method thereof reinforced by structural fillers. Background technique [0002] In recent years, with the rapid improvement of the economy and residents' living standards in rural areas of our country, the discharge of rural sewage has continued to increase. Most rural areas are generally far away from urban sewage pipe networks, and the discharged sewage is directly discharged into adjacent water bodies after being treated in septic tanks. The water environment has been polluted, especially nitrogen and phosphorus pollution has seriously caused eutrophication of the water body. [0003] At present, rural domestic sewage treatment technologies include: land treatment system, artificial wetland sewage treatment system, biological contact oxidation tank, ecological pond sewage treatment system, soil infiltration sewage treatment ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/34
CPCC02F3/302C02F3/308C02F3/343C02F3/348C02F9/00C02F2003/001C02F2203/006C02F2301/04
Inventor 梁志伟陈盈楠王存豹何李宜
Owner ZHEJIANG UNIV
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