Cultivation wastewater treatment process

A technology for aquaculture wastewater and treatment process, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of low anaerobic treatment load, high energy consumption of A/O treatment, Complicated pretreatment process and other problems, to achieve the effect of small oxygen demand, clear water quality and good water effect

Inactive Publication Date: 2019-05-21
SHANDONG BENYUAN ENVIRONMENTAL SCI & TECH +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The technical problem to be solved by the present invention is that the pretreatment process is co

Method used

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  • Cultivation wastewater treatment process

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Embodiment

[0034] The present embodiment provides a kind of aquaculture wastewater treatment process, comprising the following steps:

[0035] a. The aquaculture wastewater flows through the mechanical grille 1 to intercept larger debris, and then flows into the aeration regulating tank 2 to adjust the water quality and quantity.

[0036] b. The effluent from the aeration regulating tank 2 is pumped to the plate and frame filter press 3 to remove suspended solids. The plate and frame filter press 3 is a diaphragm type plate and frame filter press. In this embodiment, the plate and frame filter press is used to replace the solid-liquid separator and air flotation machine. The process is simplified, the number of equipment is small, the maintenance and management are simple, the floor area is small, the treatment effect is good, and the removal rate of suspended matter can be reduced from the original 50%. Increased to 80%.

[0037] c. The plate and frame filter press 3 outlet water enter...

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Abstract

The invention discloses a cultivation wastewater treatment process which comprises the following steps: large impurities are intercepted by a mechanical grating, the water quality is adjusted by an aeration adjusting tank, most of suspended matters are removed by a plate-and-frame filter press, the residual part of suspended matters are removed by a precipitation water collecting tank, low-temperature granular sludge in an anaerobic reactor is used for anaerobic removal of most organic pollutants, an anaerobic ammonia oxidation combined tank is used for removing residual organic matters and most ammonia nitrogen and total nitrogen, and up-to-standard discharge is realized after sludge and water separation in a secondary sedimentation tank. According to the process, the process is simplified by adopting the plate-and-frame filter press, and the suspended matter removal effect is good. The anaerobic reactor adopts the low-temperature granular sludge to operate, and the sludge holding capacity is large, the operation load is high, the volume of an anaerobic unit is small, the efficiency is high, and the low-temperature operation energy consumption is low. The anaerobic ammonia oxidation combined tank is small in required tank volume, small in oxygen demand and low in energy consumption, is good in water outlet effect and can be stably reached and lower than the emission standard;in addition, a carbon source does not need to be additionally added.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a breeding wastewater treatment process. Background technique [0002] The aquaculture wastewater produced by the wet manure soaking process in pig farms is mainly composed of urine, pen flushing sewage, etc. It is a high-concentration organic wastewater with a strong stench and contains more pathogenic microorganisms. The wastewater has the outstanding characteristics of "three highs": high organic pollutant content, high suspended solids, and high ammonia nitrogen content. Due to the high content of total nitrogen in the wastewater, after the wastewater undergoes anaerobic treatment, the total nitrogen will exist in the form of ammonia nitrogen, which will further increase the difficulty of wastewater treatment. [0003] The process of the existing process is usually as follows: the waste water flows into the aeration regulating tank to adjust the water quality an...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 谢昕王磊
Owner SHANDONG BENYUAN ENVIRONMENTAL SCI & TECH
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