Anaerobic distillation membrane bioreactor integrated sewage advanced treatment device and its process

Abstract

The invention discloses an integrated advanced wastewater treatment device and a advanced wastewater treatment process of an anaerobic distillation membrane bio-reaction tank. The system mainly consists of a solar heating system, an anaerobic distillation membrane bio-reaction tank, a membrane discharged water circulating cooling system, an on-line membrane discharged water quantity detection system, a gas membrane surface scouring system and a gas collecting system. The system scientifically combines an anaerobic membrane bio-reaction (AnMBR) process with a membrane distillation (MD) process in one reaction tank by replacing a conventional microfiltration membrane with a hydrophobic distillation membrane, the removal rate of COD (Chemical Oxygen Demand) in the sewage is above 99%, and 99% of nitrogen (N), phosphorus (P) and metal ions can be removed. The device and the process disclosed by the invention are applicable to high-efficiency purification of various types of sewage and have a water discharging effect similar with an anti-osmosis water discharging effect.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to an anaerobic distillation membrane biological reaction tank integrated sewage advanced treatment device and a process thereof. Background technique [0002] The traditional aerobic membrane bioreactor (MBR) process has been gradually applied to the treatment of urban sewage. Although they have very good sewage discharge quality, the cost of aeration and sludge treatment is still their biggest disadvantage. At the same time, current wastewater treatment technologies do not focus on the recovery of nitrogen (N), phosphorus (P), organic matter, and energy in water, and are therefore not sustainable. [0003] The traditional anaerobic membrane bioreactor (AnMBR) process usually uses microfiltration membrane (MF), and its reaction process depends to a large extent on the real existence of operating temperature. The advantages of anaerobic treatment will also increase with t...

AI Technical Summary

Problems solved by technology

However, the effluent of a single anaerobic biological treatment device is difficult to meet the reuse water standard, so it is often used in combination with reverse osmosis (RO) or nanofiltration (NF)

[0004] In order to obtain high-quality water suitable for cooling and heating applications, some industries have started to use combined anaerobic membrane bioreactor (AnMBR) and reverse osmosis (RO) / nanofiltration (NF) technology for wastewater biodegradation and deionization, But reverse osmosis RO needs the pressure of 2.8Kg / cm, and the working pressure of booster pump is 6-9Kg / cm at this moment, energy consumption is higher, and the water output rate of reverse osmosis (RO) membrane is lower; Encountering the problem of high energy consumption and low water production, the combined process of anaerobic membrane bioreactor (AnMBR) and membrane distillation (MD) with low energy consumption has attracted more and more attention.

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