Process for purifying and recycling biomass organic wastewater

Abstract

The invention discloses a process for purifying and recycling biomass organic wastewater and belongs to the technical field of treatment and recycle of wastewater. The process comprises the following steps: (A) carrying out hydrolysis acidification, i.e. carrying out hydrolysis acidification treatment on the biomass organic wastewater for 2.5 to 5 hours; (B) carrying out anaerobic treatment, i.e. adopting an anaerobic composite reactor the level of which is over three, wherein the inside of the anaerobic composite reactor is provided with a combination body of an upflow anaerobic activated sludge bed and an anaerobic filtering media and filler biological film bed and is also provided with a bionic distributor; (C) carrying out aerobic contact, i.e. adopting an aerobic tank which is internally provided with a combination band of an aerobic filler biological film and aerobic activated sludge so as to purify the wastewater, or carrying out wetland treatment or land treatment, i.e. purifying the wastewater by the physics, materialization, chemistry and biochemistry (anaerobic, facultative and aerobic bacteria, microorganism, animals and plants) composite actions which the wetlands or the lands have. The process of the invention has the advantages of wide application range, small energy consumption, little equipment, low price, simple management, easy operating control and smelling and tasting control, simple and clear scheme design and easy construction and installation and is suitable to carry out treatment and recycle on the wastewater in rural areas and the organic wastewater generated by enterprises using animals and plants as raw materials.

Description

Technical field [0001] The invention relates to a wastewater treatment method, in particular to the treatment and recycling of organic wastewater, and belongs to the technical field of wastewater treatment and recycling. Background technique [0002] At present, there are a large number of small and medium-sized towns and vast rural areas that use animals and plants as raw materials to produce products (including livestock, poultry, fishery and aquaculture and the required feed). Biomass organic waste (sewage) water must be treated and purified up to the standard before it is allowed to be discharged; Single technology, or combined technology process system to purify, or according to other processes that require electromechanical aeration, or with physical method photolysis, physical and chemical method coagulation sedimentation, air flotation, adsorption, membrane separation, air lift, stripping , extraction, chemical redox, wet oxidation, hydrogen peroxide oxidation, inci...

AI Technical Summary

Problems solved by technology

Even if the aerobic process is fully utilized and reaches a removal rate of 90%, it is difficult to treat biomass organic waste (sewage) with a BOD>600mg / L to meet the discharge standard;

[0007] (2) High energy consumption

[0008] (3) The amount of sludge produced is 6-10 times that of anaerobic, and the treatment device is correspondingly larger, which requires dosing and dehydration, and the corresponding treatment cost is also high

[0009] (4) It must be aerated to operate normally. There are many supporting equipment, the price is high, and the management difficulty is increased; more equipment increases the probability of failure, more maintenance, affecting normal use, and higher consumption;

[0010] (5) Aeration is mostly carried out in a non-airtight condition, which occupies a large area, is difficult to reuse, overflows with sludge, smells and smells, foams block eyes, and temperature control is difficult;

[0012] (7) More organic matter and certain toner and dye pollutants cannot be removed;

[0013] (8) The sludge concentration is low, and it is difficult to withstand large loads and water quality changes, generally only 2-4kg BOD / m 3 .d; It is difficult to store sludge for a long time and maintain activity

[0014] If physical, physical, chemical, and chemical technology are used to support them, the technical difficulties in design, construction, installation, and operation management will increase; the corresponding equipment and supporting power, preparations, etc. will increase, and the investment, operation, and management costs will also increase.

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