The present disclosure relates to a biofilter for wastewater digestion, in which a high degree of contaminant removal is obtained with a single device. In order for these levels to be achieved, the following are essential: the shape of the biofilter, the supply/discharge ratio of the biofilter, the position and height of each of the components and, finally, the combination of two packed zones, namely: a random zone, and a zone arranged in the form of ringed or corrugated tube bundles.

Integrated methanogenic anaerobic reactor and membrane bioreactor, and method for eliminating organic matter and nitrogen in urban or industrial wastewater, preferably with COD concentrations between 150 and 5000 mg/L and where the eliminations of total nitrogen that occur are between 15 and 50 mg/L, at temperatures above 15° C. The wastewater treatment takes place thanks to three stages of treatment: methanogenic anaerobic stage, anoxic stage with biofilms and suspended biomass and aerobic filtration stage with biofilms and suspended biomass.

A water cleaning system 1 includes an aerobic region 90 including breeding water 9 containing organic matter and oxygen, an aerobic layer 6 linking with the aerobic region 90 and inhabited by aerobic bacteria, a facultative anaerobic layer 5 provided adjacent to the aerobic layer 6 and inhabited by facultative anaerobic bacteria, an obligatory anaerobic layer 4 provided adjacent to the facultative anaerobic layer 5, inhabited by obligatory anaerobic bacteria, and made of andosol 40, an anaerobic space 3 having an anaerobic environment, allowing the obligatory anaerobic bacteria inhabiting the obligatory anaerobic layer 4 and products therefrom to flow therein, and a tube 18 as linking means linking the anaerobic space 3 and the aerobic region 90.

The present invention relates to an anaerobic reactor (10) for the treatment of industrial and other wastewaters at psychrophilic temperatures, the reactor comprising a mixing chamber (12) in which is located, during use, a granular sludge fluidized bed, the reactor further comprising a biofilm chamber (16) fed from the mixing chamber and housing a biofilm colonized pumice-based carrier material, and a separation chamber (18) in fluid communication with the biofilm chamber and in which treated effluent and biogas produced within the reactor are separated.

A bio-enhanced deodorization equipment includes a main body and a filler container in the main body. The filler container includes a wall and at least three perforated separator plates vertically arranged in the filler container. A plurality of spaces are formed by the at least three perforated separator plates, and a microbial filler and a carrier filler are accommodated in the spaces in an alternate manner.

The present invention relates to the technical field of wastewater treatment, and specifically, to a wastewater treatment device and method, comprising the following steps: step 1: injecting wastewater into a flocculation scum treatment tank through a wastewater inlet; step 2: injecting an appropriate amount of composite aluminum salts and polyacrylic agents into the flocculation scum treatment tank through a metering pump to perform coagulation assistance and flocculation enhancement treatment; and starting an air pump to inject air into the flocculation scum treatment tank through an aeration pipe, forming tiny bubbles, whereby due to the flocculation effect of the flocculant, originally fine matters in the wastewater agglomerate into larger particles, forming suspended matters, and these suspended particles adhere on the bubbles and rise up to the water surface for the convenience of being processed by a foam pushing plate.

This invention relates to apparatus, methods and applications for treating wastewater, and more particularly to a technique of biological processes that integrates lowering the levels of effluent pollutants and reducing accumulated sludge volume from wastewater. This invention further relates to apparatus and methods for using a blend of non-pathogenic microbes, spores, unicellular organisms, and enzymes on-site at a wastewater treatment facility to rapidly, ecologically, and cost-effectively solve numerous contaminant issues common in wastewater.

A biological filler includes an embedding agent and an embedded complex. The embedded complex includes a scallop shell powder, 1,5-dihydroxyanthraquinone, and Thiobacillus denitrificans. The embedding agent includes a poly(vinyl alcohol)-sodium alginate blend membrane and a crosslinked composite membrane. The embedded complex is embedded by the embedded agent.

A method for treating acrolein reactor wastewater, comprising the steps of: S1. mixing acrolein reactor wastewater and a carbonate aqueous solution to obtain a mixed solution, wherein the acrolein reactor wastewater has a pH value of less than 2 and contains 500 ppm to 3,000 ppm of acrolein, 50 ppm to 800 ppm of allyl alcohol, 40,000 ppm to 100,000 ppm of acrylic acid, 10,000 ppm to 30,000 ppm of formaldehyde, 3,000 ppm to 10,000 ppm of acetic acid and 3,000 ppm to 8,000 ppm of maleic acid; and the mixed solution has a pH value of 4 to 6, a COD concentration ranging from 7,500 ppm to 30,000 ppm, and a formaldehyde concentration ranging from 800 ppm to 4,000 ppm; S2. conveying the mixed solution obtained in step S1 to an anaerobic reactor (4) for biochemical treatment; and S3. conveying the solution treated in step S2 to an aerobic biochemical tank (5) for treatment; and reflowing at least one part of the solution treated in step S2 and/or S3 to step S2. Also provided is a device for treating acrolein reactor wastewater.

Wastewater containing organic matter may be treated using a multi-zone apparatus. In a first zone, organic matter in the wastewater may, among other things, be converted to at least volatile fatty acids (VFAs) and, thereafter, a portion of the treated wastewater may flow to a second zone that may, among other things, convert the VFAs to methane.