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Multi-stage multi-segment AO enhanced phosphorus removal container type treatment equipment for rural sewage and method of equipment

A rural sewage and container-type technology, which is applied in water/sewage treatment, biological water/sewage treatment, multi-stage water/sewage treatment, etc., can solve problems such as difficulty in meeting discharge requirements and limited nitrogen and phosphorus removal rates, and achieve The effect of low noise, lower operating cost and energy saving

Pending Publication Date: 2019-12-31
中国船舶重工集团公司第七0四研究所 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, with the requirements of relevant policies such as the construction of ecological civilization and the construction of beautiful countryside, some economically developed areas or special water function areas require the water quality of rural sewage after treatment to meet higher requirements, such as Class A standard, strict It is based on the local first-level standard of Grade A, surface IV water standard, etc., which puts forward higher requirements on the effluent indicators, especially the control of nitrogen and phosphorus. Phosphorus, limited by the nitrogen and phosphorus removal rate of biological methods, especially the removal rate of phosphorus is only 40% to 70%, it is almost difficult to meet higher discharge requirements

Method used

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  • Multi-stage multi-segment AO enhanced phosphorus removal container type treatment equipment for rural sewage and method of equipment

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Effect test

Embodiment 1

[0046] A demonstration project of domestic sewage treatment in a rural area, the water volume of the project is 30m 3 / d, inlet water temperature 15-25℃, water quality COD≈400mg / L, BOD≈200mg / L, TN≈60mg / L, NH 3 -N≈45mg / L, TP≈7mg / L, SS≈120mg / L.

[0047] Using this device and process method for treatment, the volume of the single-stage anoxic pool is 0.65m 3 , a total of three stages, the packing is braided packing, with a diameter of about 20-40mm, and the spacing and line spacing are both 100mm; the volume of a single-stage aerobic tank is 1.02m 3 , a total of three levels, the filler is a new type of aerobic biological filler for wall structure, with a specific surface area of ​​3000-4000m 2 / m 3 , The filling rate is about 40%, and the phosphorus removal adopts the first-level and second-level series series for phosphorus removal.

[0048] Effluent COD3 -N<1mg / L, TP<0.2mg / L, SS<9mg / L, the water quality is stable and meets the Grade A standard of GB18918-2002.

Embodiment 2

[0050] A rural domestic sewage treatment project with a water volume of 50m 3 / d, influent water quality COD=200~300 mg / L, BOD=120~150mg / L, TN≤40~60mg / L, NH 3 -N≤30~45mg / L, TP≤5~6mg / L, SS≤100~120mg / L.

[0051] Using this device and process method for treatment, the volume of the single-stage anoxic pool is 1.08m 3 , a total of three levels, the packing is braided packing, the diameter is about 20-40mm, the spacing and row spacing are both 100mm; the volume of single-stage aerobic tank is 1.70m 3 , a total of three levels, the filler is a new type of aerobic biological filler for wall structure, with a specific surface area of ​​3000-4000m 2 / m 3 , The filling rate is about 30%, and the phosphorus removal adopts the first-level phosphorus removal.

[0052] Effluent COD3 -N<3mg / L, TP<1mg / L, SS<9mg / L, the water quality is stable and meets the Grade B standard of GB18918-2002.

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Abstract

The invention relates to multi-stage multi-segment AO enhanced phosphorus removal container type treatment equipment for rural sewage and a method of the equipment. The equipment has a water distribution tank, a biochemical sedimentation cabinet, a chemical sedimentation cabinet, a phosphorus removal treatment device, a fixed-bed anoxic zone and an MBBR aerobic zone; the fixed-bed anoxic zone is composed of multiple anoxic cabinets, perforated aeration tubes 36 arranged at the bottoms of the anoxic cabinets, and braided type fillers arranged on the perforated aeration tubes; the MBBR aerobic zone is composed of multiple aerobic cabinets, microporous aeration disks arranged at the bottoms of the aerobic cabinets and supporting filler nets filled with high-performance suspended fillers arranged on the microporous aeration disks; multiple anoxic cabinets and multiple aerobic cabinets connected in sequence at intervals to form a multi-stage multi-segment AO enhanced treatment system; and the water distribution tank is connected with the external sewage and the biochemical sedimentation cabinet and communicates with the anoxic cabinets through a water outlet pipeline, the adjacent aerobic cabinet and anoxic cabinet communicate with each through holes in the bottoms, the aerobic cabinets communicate with the biochemical sedimentation cabinet through holes in the bottoms, and the phosphorus removal treatment device is connected to the biochemical precipitation cabinet and the chemical precipitation cabinet for phosphorus removal treatment.

Description

technical field [0001] The invention relates to a biochemical method of rural sewage treatment device and method, in particular to a multi-stage and multi-stage AO enhanced phosphorus removal container-type rural sewage treatment device and method, especially suitable for deep nitrogen and phosphorus removal of rural high-nitrogen and high-phosphorus sewage processing fields. Background technique [0002] In my country, on the one hand, due to the fact that the distribution of rural residents is relatively scattered compared to cities, on the other hand, there are also differences in the daily work habits or customs of rural residents and urban residents, so that the treatment of rural sewage cannot completely copy the model of urban sewage treatment plants. Moreover, the nitrogen and phosphorus content of rural sewage, especially rural intensive farming wastewater, is higher than that of urban sewage. [0003] At present, the decentralized rural sewage treatment system ha...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/20
CPCC02F9/00C02F3/286C02F3/302C02F3/30C02F3/121C02F3/02C02F3/1268C02F1/001C02F2001/007C02F1/5281C02F1/5236C02F1/56C02F1/42C02F2103/20
Inventor 李海峰沈烁陈畅白韬光宋智启
Owner 中国船舶重工集团公司第七0四研究所
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